JPH0618072A - Air conditioner - Google Patents

Abstract

PURPOSE:To make maintaining of comfortableness in the case where an atmospheric temperature is high at the time of room cooling and energy conservation compatible by raising a set temperature in a room and accelerating an air flow speed of an indoor unit if the atmospheric temperature exceeds a preset temperature level. CONSTITUTION:When an atmospheric temperature exceeds a threshold value, a set temperature control function 4 is operated, a room cooling set temperature is raised by a predetermined temperature width, and a decrease in an input frequency of a compressor 5 is, for example, designated. Simultaneously, an air flow speed/wind direction control function 6 is operated to accelerate an air flow speed in a room to lower a sensible temperature of a resident in a room. In this case, an increase in a speed of a motor of an indoor fan is instructed, and an angle of a louver 8 for regulating a wind direction is varied so that the air is brought into contact with the resident. Thus, comfortable room cooling can be continued without increasing consumption energy of an air conditioner.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner and can be applied to any air conditioner regardless of the type of household, commercial or refrigeration cycle.

[0002]

2. Description of the Related Art As a method for controlling an air conditioner that detects the outside air temperature and changes the set temperature, for example, Japanese Patent Laid-Open No. 1-13
7143, there is a method in which the set temperature is raised and lowered in conjunction with the rise and fall of the outside air temperature and the rotation speed of the compressor is controlled to adjust the capacity. With such a control method, when the outdoor temperature rises during the cooling operation, the set temperature is lowered to give a certain comfortable feeling. But in this way,
Even if the user feels comfortable, the input of the compressor increases due to the increase in the rotation speed of the compressor, leading to an increase in power consumption.

[0003]

The problem to be solved by the present invention is to maintain both comfort and energy saving when the outside air temperature is high during cooling operation.

[0004] In recent years, the demand for electric power in summer has significantly increased, and particularly in the afternoon of fine weather, when the outside air temperature rises.
Under such conditions, power demand is approaching the limit of power generation capacity, and the need for so-called peak cut is emphasized. The ratio of cooling demand to this electric power demand is increasing year by year, reaching about 40%.

Most of the room air conditioners for home use are of the electric compression type, and the reduction of the power consumption during the cooling operation greatly contributes not only to the gain of the individual user but also to the above peak cut. For example, if the set temperature is raised by 1 ° C, the input will be about 5%.
Can be lowered.

[0006]

[Means for Solving the Problems] The means for solving the above-mentioned problems is not to decrease the set temperature when the outside air temperature is high, but to keep the set temperature as it is or to raise it.
At the same time, the wind velocity from the indoor unit is increased, and the wind direction is controlled to directly apply the wind to the occupants to give a cool sensation, and the control is performed so as not to impair the comfort in terms of bodily sensation.

[0007]

By performing the control as described above, it is possible to maintain a comfortable feeling without lowering the temperature even when the outside air temperature is high.
Human thermal sensation is not only a function of temperature, but temperature, humidity,
It is known that it is determined by a combination of wind speed, radiation, amount of activity, amount of clothes, and the like. The control method of the present invention pays attention to this relationship, and instead of lowering the indoor temperature when the outside air temperature is high, it maintains and improves the comfort and energy saving by acting to supplement the cooling sensation by increasing the wind speed hitting the body. , Especially to reduce power consumption.

[0008]

Embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the present invention. Reference numeral 1 denotes an outside air temperature detecting means such as a temperature sensor provided outside the room. This detection means monitors the outdoor temperature at certain time intervals. 2 is
It is a function of comparing whether or not the following control is performed by comparing the measurement result of the outside air temperature with a judgment standard built in a memory or the like in advance. For example, it is assumed to have a threshold value such that the following control is performed when the outside air temperature exceeds 35 ° C. Further, considering that the electric power demand due to cooling reaches its peak in the summer afternoon, the following control may be performed only in combination with the calendar function of 3 at a certain temperature level for a certain specific period. . When it is determined that the outside air temperature exceeds a certain threshold value, the set temperature control function 4 operates to increase the cooling set temperature by a predetermined temperature range, and issues an instruction to decrease the input frequency to the compressor 5 for example. . At the same time, the wind speed / direction control function of 6 works to increase the wind speed in the room and reduce the sensible temperature of the person in the room. At this time, a command is issued to the motor 7 of the indoor fan to increase the rotation speed, and the angle of the louver 8 for adjusting the wind direction is changed so that the person in the room is exposed to the wind. At this time, in order to further enhance the effect, in combination with the person detecting means 9 for detecting the position of the person in the room by means of detecting the position of the remote controller or the like, the louver and vertical flap are controlled to efficiently blow the wind to the place where the person is. You may send it.

FIG. 2 is a flow chart showing the operation procedure of the present invention. The basic operation of the present invention will be described with reference to this figure. The outdoor air temperature To
Is detected at a certain time interval. When it is determined that the outside air temperature To exceeds the preset threshold value Tc, the set temperature control function of 4 increases the cooling set temperature Ts from the initial value Tsi by a predetermined temperature width DT. Next, the rotation speed Ws of the indoor fan motor is controlled by the wind speed / direction control function of 6.
Is increased by DW from the initial value Wsi. This increase corresponds to an increase in wind speed sufficient to sensibly reduce the increase DT in the cooling set temperature. In addition, adjust the angle of the louver at the air outlet to adjust the wind to hit the person in the room. That is, it is generally said that the angle of the blown air is generally horizontal during cooling, but in this case, the louver is directed slightly downward so that the wind is directly applied to the person in the room to lower the sensible temperature. When the outside air temperature To is lower than the threshold value Tc, the cooling set temperature Ts is set to the initial value Tsi, the indoor fan motor rotation speed is set to the initial value Wsi, and the louver is set to the normal angle.

The wind speed / wind direction of 6 is determined as follows, for example. If the set temperature rises and the room temperature rises, comfort will be lost as it is. Therefore, the wind speed is increased to compensate for the increase in the set temperature. For that purpose, for example, the effective temperature diagram shown in FIG. 3 is used. This figure takes into consideration the temperature, humidity, and airflow proposed by YAGRO, etc. in the United States, and the sensible temperature when the temperature and airflow conditions change can be easily obtained. For example, first, the set room temperature is 25 ° C. of the dry-bulb temperature (that is, the set room temperature), 0.1 m / s of the indoor wind speed (the wind speed at the position of the person in the room), and 20 ° C. of the wet-bulb temperature (63% relative humidity). Suppose that the temperature has risen 1 ° C to 26 ° C (at this time, the wet bulb temperature is also 1 ° C for simplification).
To go up). The sensible temperature in the initial state is line segment AB in FIG. 3 and the air flow (in the figure, it is pneumatic) 0.1.
22.7 ° C. is obtained from the intersection with the curve of (the effective temperature in the figure). Here, the room temperature rises by 1 ° C and becomes 2
Assuming that the temperature reaches 6 ° C. (the wet-bulb temperature also rises by 1 ° C. to 21 ° C.), the line segment AB moves in parallel with the line segment CD. In this state, in order to obtain the same sensible temperature of 22.7 ° C. as described above, it is understood that the wind speed of 0.6 m / s is required from the intersection of the line segment CD and the effective temperature 22.7 ° C. Therefore, control is performed such that the rotation speed of the indoor fan is increased and the direction of the air flow is changed so that the wind directly hits the person in the room. By doing so, it is possible to perform air conditioning without raising the comfort level while raising the set temperature in the room, and it is possible to reduce power consumption. This sensible temperature may be obtained by another method, and such a rule is recorded in advance in the memory or the like of the control unit. As mentioned above, set the temperature to 1 ℃
Power consumption is reduced by about 5% when raised.

FIG. 4 shows another embodiment of the present invention. The control method is basically the same as that of the first embodiment. Reference numeral 10 is an air conditioner indoor unit. In this embodiment, a fan 11 is additionally used as means for executing the wind speed / wind direction control, and the air conditioner and the fan are controlled together by the centralized controller 12. The advantage of this method is that the variable range of wind speed can be made large. The cross-flow fan, which is often used in the current separate type, generally has a small air volume, and there is a case where the variable range of the wind speed cannot be increased in terms of noise and the like. This is an effective example in such a case.

[0013]

According to the present invention, even when the outdoor temperature is high, a comfortable cooling operation can be continued without increasing the energy consumption of the air conditioner. In particular, if the present invention is applied to an electric compression type that is currently widely used in home room air conditioners, there is an effect of peak cut during the peak power demand in the summer, and it is possible to reduce the tight power supply and demand. .

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a flowchart showing a basic operation of the present invention.

FIG. 3 is a diagram for obtaining a sensible temperature from a dry-bulb temperature, a wet-bulb temperature, and a wind speed.

FIG. 4 is a diagram showing another embodiment of the present invention.

[Explanation of symbols]

 1 ... Outdoor temperature detection means, 2 ... Temperature condition determination function, 3 ... Calendar function, 4 ... Set temperature control function, 5 ... Compressor, 6 ... Wind speed / direction control function, 7 ... Indoor fan motor, 8 ... Louver, 9 ... person detection function, 10 ... indoor unit, 11 ... fan, 12 ... centralized controller, 13 ... inhabitant.

Claims (6)

[Claims] 1. An air conditioner having means for setting a desired room temperature, the operation of which is controlled in accordance with the set temperature, means for detecting the outside air temperature, a function for judging the temperature level thereof, and the judgment thereof. It has a function to correct the set room temperature based on the above, and a function to control the wind direction and speed of the indoor unit in conjunction with the correction, and when the outside air temperature exceeds a preset temperature level, the indoor set temperature is An air conditioner characterized by raising the wind speed of the indoor unit as well as raising it. 2. The air conditioner according to claim 1, wherein the outdoor temperature is sensed, and when the temperature exceeds a certain temperature, the wind speed of the indoor fan is increased and the rotation speed of the compressor is decreased. 3. The air conditioner according to claim 1, further comprising a 24-hour timer for increasing the wind speed of the indoor fan and decreasing the rotational speed of the compressor at a designated time. . 4. The air conditioner according to claim 1, comprising an outdoor temperature sensor and a 24-hour timer, and lowering the rotation speed of the compressor when the temperature exceeds a certain temperature and within a designated time. . 5. The air conditioner according to claim 1, wherein a human detection sensor is used to increase the wind speed while directing the wind in that direction. 6. The air conditioner according to any one of claims 1 to 5, wherein another air conditioner such as a fan is combined as means for adjusting the indoor wind speed.