JPH0351652A - Air conditioner - Google Patents

Abstract

PURPOSE:To form a comfortable environment efficiently by a method wherein when a cooling/heating operation is to be carried out, a direction of blowing air is deflected according to a temperature of a blowing air with an air direction deflecting means and then a variation of air blown is added to a control of the cooling/heating operation. CONSTITUTION:An indoor temperature and a set temperature are compared with each other by operation control means 13 and 14. When this difference is more than a predetermined temperature range, a cooling/heating operation is carried out according to this difference and the indoor temperature is controlled to a temperature around the set temperature within the temperature range. During this cooling/heating operation, a direction of blowing air is deflected by air direction deflection means 17, 18 and 19 and a variation of air direction of the blowing air stream is added to a control for the cooling/ heating operation around the temperature variation corresponding to a difference between the indoor temperature and the set temperature by the operation control means 13 and 14. With such an arrangement as above, it is possible to increase an amount of irradiation against a physical function or a brain of an occupant and to form an efficient and comfortable environment.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an air conditioner that cools and heats a living space, and particularly relates to an air conditioner that provides a comfortable living space with a comfortable environment.

[Prior Art] Figures 7 and 8 both relate to the air conditioner described in the earlier patent application No. 1-65095.
The figure is a block diagram showing a conventional air conditioner, and FIG. 8 is a flowchart showing the operation of the heating and cooling control means of the conventional air conditioner.

In Fig. 7, (1) is a power switch, (2) is a temperature detector such as a thermistor that detects the indoor temperature, and (3) is an A/C converter that converts the output of the temperature detector (2) into a digital signal. The D conversion section (4) is a switching section that sets the temperature when performing cooling/heating operation. (6) is the A/D
A human power circuit (7) is the human power circuit (6) into which the output of the converting section (3) and the output from the switching section (4) are input.
The CPU reads data from the CPU and outputs instructions to the output circuit (9) according to the execution program stored in the memory (8). These input circuits (6) and CP
U (7), memory (8) and output circuit (9) constitute a microcomputer (5) which is a heating and cooling control means. This microcomputer (5) outputs a control command for the temperature of the air-conditioning/heating system. (13) is an output control means for controlling on/off of a compressor that generates heating and cooling capacity according to the control command of the microcomputer (5), and (14) is an output control means for controlling on/off of a compressor that generates heating and cooling capacity. It is a heating and cooling generating means with variable capacity.

Next, the operation of the conventional air conditioner configured as described above during cooling operation will be explained using the flowchart shown in FIG. 8.

In step S1, a set temperature rTsJ for cooling operation is set, and in step 2, an operation mode is set.

In step S3, the indoor temperature rTrJ is detected, and in step S4, the set temperature rTsJ and the indoor temperature IT r
Calculate the temperature difference r from JTJ. Then, in step S5, it is determined whether the operation mode set in step S2 is the normal mode or the variable mode, and if it is the normal mode, the process proceeds to step S7, and the set temperature calculated in step s4 is The cooling capacity is calculated from the temperature difference rJTJ between rTsJ and the room temperature rTrJ.

Then, a cooling command representing the cooling capacity calculated in step S8 is output to the output control means (13), and the cooling capacity of the heating/cooling generation means (14) is varied to perform cooling operation.

When the operation mode is set to change mode operation in step S2, the process advances from step S5 to step s6. Then, the temperature difference LJTJ calculated in step S4 is compared with a predetermined temperature range, for example, 10°C. The temperature difference rljTJ is {. If it is greater than 0°C, that is, at the beginning of cooling, the indoor temperature r
If TrJ has not decreased sufficiently, the process proceeds to step S7 and the cooling operation is continued under the same operation control as the normal mode operation.

As cooling progresses, the temperature inside the living room decreases, and the indoor temperature rT
The temperature difference rJTJ between rJ and the set temperature rTsJ is a predetermined temperature range, and in this air conditioner, l. When the temperature falls within the 0° C. range, the condition determination in step S6 is satisfied, and the process proceeds to step S9. In this step S9, the indoor temperature rTrJ and the set temperature rTsJ are compared, and if the indoor temperature "Tr" is higher than the set temperature "Ts", the first set temperature rTslJ lower than the set temperature "TS" is set in step S10. be done. Then, the process proceeds to step S11, where the cooling capacity is increased by a predetermined amount, for example, 10%, and cooling is continued. In step S12, the first set temperature r
TslJ and the room temperature rTrJ are compared, and if the room temperature rTrJ is higher than the first set temperature (Tsl), the process returns to step S11. Therefore, the air conditioner continues cooling with a high cooling capacity increased by 10 percent. Therefore, the indoor temperature rTrJ further decreases.

The indoor temperature rTrJ decreases to the first set temperature rTs.
If the temperature is lower than or equal to LJ, the process proceeds to step 313 based on the condition determination in step S12, and a second set temperature rTs higher than the set temperature rTsJ is set.
2J is set. Then, in step 814, a low-capacity cooling command is output to reduce the cooling capacity by a predetermined amount, in this case 10%, to change to low-capacity cooling operation. Then, in step S15, the indoor temperature rT
rJ and the second set temperature rTs2J are compared, and if the indoor temperature "Tr" is low, the process returns to step s14 and the low-capacity cooling operation continues. For this reason, the indoor temperature “Tr”
is the second set temperature rTs2J higher than the set temperature rTsJ
rises to. Then, when the room temperature rTrJ becomes equal to or higher than the second set temperature rTs2J, the process returns to step S1 based on the condition determination in step S15.

Since the indoor hot water temperature rTrJ is approximately the same temperature as the second set temperature rTs2J, the condition determinations of step S5, step S6, and step S9 are passed with Yes. Therefore, in step Sll, a cooling operation command with a 10% increase is issued again, and the indoor temperature rTrJ is again lowered to the first set temperature r T slJ.

In this way, the above-mentioned air conditioner inputs the indoor temperature and the set temperature and performs heating and cooling operation to control the set temperature or a temperature close to it. a first control means comprising a routine from step S1 to step S8 for performing heating and cooling operation according to the difference when the difference is within a predetermined temperature range; When the difference is less than a predetermined temperature range, two types of threshold values are set depending on the magnitude relationship between the indoor temperature rTrJ and the set temperature rTsJ, and the set temperature "Ts
'', and a second control means consisting of a routine from step S9 to step S15 for performing cooling/heating operation in a predetermined temperature range centered on . It has a control means.

Then, the temperature detected by the temperature detector (2) is
The indoor temperature rTrJ converted into a digital signal by the A/D converter (3) is compared with the set temperature “TS” set by the switching unit (4) to find the temperature difference 1”JTj, and from this, the indoor temperature The microcomputer (5) calculates the cooling capacity to bring rTrj to the set temperature of 1"TsJ, and adds this to the output control means (13) to control the capacity of the air conditioning/heating generation means (14) to obtain the required temperature. It cools the room with its cooling capacity. On the other hand, the heating operation also heats the room with the necessary heating capacity by controlling the capacity of the cooling/heating generating means (l4) in the same manner as in the case of the cooling operation described in -L.

[Problems to be Solved by the Invention] In the conventional air conditioners as described above, the indoor temperature is compared with the set temperature, and the cooling/heating operation is appropriately controlled according to the difference, thereby changing the indoor temperature from the set temperature to a predetermined value. By repeatedly raising and lowering the temperature within a set temperature range, the occupant's physiological functions and cerebrum were stimulated, creating a pleasant and comfortable environment. Furthermore, it has been empirically known that this comfortable environment is determined by the physiological function of the occupant or the amount of stimulation given to the cerebrum.

That is, for example, in the case of air conditioning operation, the greater the amount of stimulation, the cooler the sensation was.

However, in this conventional persimmon air conditioner, although the temperature of the outlet air changes as the cooling and heating capacity changes,
The direction of the airflow itself was constant, and the room temperature changed very slowly and the response was slow. Moreover, conventional air conditioners of this type frequently stimulate the occupant's physiological functions or cerebrum by appropriately changing the indoor temperature.
Since the stimulation was only caused by temperature changes, the amount of stimulation was limited and relatively small. For this reason, it has been desired to provide an air conditioner that can provide a greater amount of stimulation to residents.

Therefore, this invention improves the comfort of the environment within the living room by providing a greater amount of stimulation to the physiological functions or cerebrum of the occupant when comparing the indoor temperature and the set temperature and appropriately controlling the heating and cooling operation according to the difference. The objective is to provide an air conditioner that can promote this.

[Means for Solving the Problems] The air conditioner according to the present invention is an air conditioner that performs heating and cooling operation to manually control the indoor temperature and the set temperature to the set temperature or a temperature close to the set temperature. A first temperature detection means for detecting temperature compares the indoor temperature detected by the first temperature detection means with a set temperature, and if the difference is greater than a predetermined temperature, air conditioning or heating is performed according to the difference. At the same time, if the difference is less than a predetermined temperature range, two types of threshold values are set depending on the magnitude relationship between the indoor temperature and the set temperature, and heating and cooling operation is performed within a predetermined temperature range centered around the set temperature. a control means, a second temperature detection means for detecting the temperature of the blowing airflow of cold air or warm air during the cooling/heating operation, and a blowing direction of the cold air or hot air according to the temperature detected by the second temperature detection means; and a wind direction deflection means for deflecting the wind direction.

[Function] In the air conditioner of the present invention, the operation control means compares the indoor temperature and the set temperature, and when the difference is greater than a predetermined temperature range, performs heating and cooling operation according to the difference, If the difference is less than a predetermined temperature range, two types of threshold values are set depending on the magnitude relationship between the indoor temperature and the set temperature, and heating and cooling operation is performed within a predetermined temperature range centered around the set temperature, and the indoor temperature is set to the set temperature. Control the temperature within a predetermined temperature range at nearby temperatures. During the cooling/heating operation, the blowing air direction is deflected according to the temperature of the blowing air by the wind direction deflection means, and the cooling/heating operation is performed mainly by changing the temperature according to the difference between the indoor temperature and the set temperature by the operation control means. By adding changes in the direction of the airflow to the control, the amount of stimulation given to the occupant's physiological functions or cerebrum is increased.

[Example] Hereinafter, embodiments of the present invention will be explained using figures.

FIG. 1 is a block diagram showing an air conditioner according to an embodiment of the present invention, and FIG. 2 is a perspective view showing a wind direction deflecting means used in the air conditioner according to an embodiment of the present invention. In addition, in the figure, (
1) to (14) are the same as or intended to be the constituent parts of the above-mentioned conventional example, so duplicate explanations will be omitted.

In FIGS. 1 and 2, (15) is a temperature sensor such as a thermistor installed at the outlet (not shown) of the indoor unit of the air conditioner, and (16) is the temperature sensor (1).
5) is an A/D converter that converts the output into a digital signal. This temperature detector (15) and A/D converter (16)
This constitutes a second temperature detection means for detecting the temperature of the blowing airflow of cold air or hot air during heating and cooling operation. Also in this embodiment, the temperature sensor (2) is used as in the conventional example.
and an A/D converter (3) to detect the indoor waterfall, and these constitute the first temperature detection means. The temperatures detected by the first and second temperature detection means are both input manually to the input circuit (6) of the microcomputer (5).

(17) is the output circuit (9) of the microcomputer (5).
), (18) is a motor such as a servo motor driven by this drive circuit (17),
(1) is a vertical deflection louver that deflects the blowing air direction by changing the blowing angle and rectifying the blowing airflow. The drive circuit (17), the motor (18), and the vertical deflection louver (19) constitute a wind direction deflection means that deflects the blowing direction of cold air or hot air. FIG. 2 is a perspective view showing the main parts of the wind direction deflection means, and the vertical deflection louver (one) is moved by the drive of the motor (18). Further, the blowing air direction by this wind direction deflection means is deflected according to the temperature detected by the second temperature detection means, and this deflection command is given according to a predetermined program stored in the memory (8) of the microcomputer (5). It will be done.

Next, the operation of the air conditioner of this embodiment will be explained using an example during cooling operation. The air conditioner configured as described above operates as shown in FIGS. 3 and 4. FIG. 3 is a flowchart showing an example of the operation of the heating and cooling control means of an air conditioner according to an embodiment of the present invention, and FIG. FIG. The operations of each step from step S1 to step S15 in FIG. 3 are the same as in FIG. 8 of the conventional example, and the same operations as the conventional example are performed, so the explanation will be omitted here and the differences will be focused on. Explain.

In FIG. 3, the difference from the conventional example is that step S sbl is provided between step Sll and step S12, and step S sbl is provided between step S14 and step Si5.
This is due to the intervention of sb2. This step S sb
1 and step S sb2, the blowing mountain wind direction deflection control operation is performed by the wind direction deflection means.

This blowout air direction deflection control operation constitutes a subroutine as shown in FIG. , In FIG. 4, first, in step S21, the blowing temperature rT
f J is detected. That is, during the cooling/heating operation, the temperature of the blowing mountain airflow of cold air is detected by the second temperature detection means. In step S22, the downward blowing angle of the blowing airflow is calculated based on the detected temperature. This calculation is performed by the CPU (7) and memory (8) of the microcomputer (5).

Here, the calculation operation of this lower blowing angle will be explained.

FIG. 5 is an operating characteristic diagram showing the relationship between the lower blowing angle and blowing temperature of the wind direction deflection means used in the air conditioner according to one embodiment of the present invention. As shown in this figure, the relationship between the lower blowing angle and the blowing temperature is that when the blowing temperature is high, the lower blowing angle is large;
Conversely, when the blowing temperature is low, the lower blowing angle is set small. Then, based on this relationship, the lower air outlet angle corresponding to the air outlet temperature rTfJ during the heating and cooling control operation is calculated.

Returning to the explanation of FIG. 4 again. In step 823, the angle of the lower deflection louver (one) is changed so that it becomes the lower blow-out angle calculated as described in section 2 above.

That is, the output circuit (9) of the microcomputer (5)
) The drive circuit (17) and motor (18
) and appropriately rotate the vertical deflection louver (one) to change the actual downward blowing angle. After this,
Exit from this subroutine and return to the main routine,
The same control operation as in the conventional example is performed.

In this way, in the air conditioner of this embodiment, when the power switch (1) is turned on, heating and cooling control is performed according to the flow shown in FIG. That is, the operation control means compares the indoor temperature and the set temperature, and when the difference is greater than or equal to a predetermined temperature range, the heating and cooling operation is performed according to the difference, and when the difference is less than the predetermined temperature range. Sometimes, two types of threshold values are set depending on the magnitude relationship between the indoor temperature and the set wetness, and the heating and cooling operation is performed within a predetermined temperature range centered on the set temperature, and the indoor temperature is kept within the predetermined temperature range at a temperature near the set temperature. control. During this cooling/heating operation, the temperature of the blown airflow is detected, and the direction of the blown air is deflected by the wind direction deflection means according to the detected temperature.

Next, the relationships among the cooling capacity, room temperature, blowout temperature, and lower blowout angle of the air conditioner of this embodiment will be explained. FIG. 6 is a characteristic diagram showing the relationships between cooling capacity, room temperature, blowout temperature, and lower blowout angle in each operation mode of the air conditioner according to an embodiment of the present invention.

The horizontal axis represents time, and the vertical axis represents cooling capacity, room temperature, blowout temperature, and lower blowout angle, respectively.

In FIG. 6, when the operation mode is set to normal mode and operation of the air conditioner is started at time rTLJ, the room temperature decreases toward the set temperature shown by the broken line. In this air conditioner, the cooling capacity is determined by the difference between the set condition and the room temperature, so the cooling capacity decreases as the room temperature decreases. Then, at time 1T2, the room temperature substantially matches the set temperature, and the cooling capacity also enters the stable range. In addition, when the operation mode is set to change mode at time "T3", the cooling capacity changes periodically by comparing the temperature difference between the set temperature and the room temperature as shown in the figure, and the blowout temperature also changes depending on the cooling capacity and the room temperature. Under the influence, it changes as shown in the figure. As a result, the room temperature changes periodically around the set temperature, and repeatedly increases or decreases within a predetermined set temperature range.

On the other hand, when the operation mode becomes the change mode at time "T3", in this embodiment, the downward blowing angle that determines the direction of the blowing mountain wind also changes as shown in the figure in accordance with the change in the blowing temperature. When this downward blowing angle changes, the airflow of cold air that hits the occupants in the room changes. As a result, the stimulation given to the occupant's physiological functions or cerebrum changes. This stimulation is influenced by the angle of the airflow hitting the occupant and the temperature of the airflow. That is, the larger the angle of the airflow hitting the occupant, the greater the amount of stimulation to the body, etc., and the lower the temperature of the airflow, the greater the amount of stimulation. The relationship between the lower blowout angle and the blowout temperature in Figure 5 above is set in consideration of the amount of stimulation given to the occupant's physiological function or cerebrum by the direction and temperature of this airflow, and is determined by the total stimulation caused by the airflow. The amount is kept approximately constant.

In this way, in this embodiment, in addition to a predetermined change in room temperature, a change in the direction of the blowing airflow is added to pleasantly stimulate the temperature-receptive area of the occupant's skin, thereby further activating the physiological functions or the cerebrum.

As described above, in the air conditioner of this embodiment, the indoor temperature rTrJ is changed to the set temperature "TS" by the heating and cooling operation control operation.
'', a fall and rise are repeated between a first set temperature rTslJ lower than the set temperature rTsJ and a second set temperature rTs2J higher than the set temperature rTsJ. Therefore, the temperature inside the living room always changes within a certain temperature range. Furthermore, during this cooling/heating operation, the direction of the blowing air is deflected by the wind direction deflecting means according to the temperature of the blowing mountain airflow. In this way, by adding the change in the wind direction of the Fukiyama airflow to the control of the heating and cooling operation mainly based on the temperature change according to the difference between the indoor temperature and the set temperature by the operation control means, it is possible to reduce the stimulation caused by the change in room temperature and the wind direction of the Fukiyama airflow. At the same time, stimulation due to changes is given to the physiological functions of the residents. Therefore, the total amount of stimulation given to the occupant's physiological functions or cerebrum is increased compared to the conventional case where only room temperature changes are caused.

As a result, due to changes in room temperature and changes in the direction of the outflow air,
Residents' physiological functions are greatly stimulated, and their cerebral activity becomes more active. In addition, compared to conventional methods, which create a comfortable and comfortable environment in a living room where one does not feel hot or cold, by controlling only changes in room temperature, this can be achieved more effectively and can also contribute to energy savings.

Incidentally, although the above embodiment has been explained using the case of cooling operation as an example, the same operation control can be performed in the case of heating operation, and the same effect can be achieved.

Further, in the above embodiment, a case has been described in which there is a selection switch between the normal mode and the change mode, but there may be no selection switch and the vehicle may always operate in the change mode. Further, in the above embodiment, a case has been described in which the change mode is entered when the room temperature is within a range near the set temperature, but it is also possible to always operate in the change mode.

[Effects of the Invention] As explained above, the air conditioner of the present invention uses the operation control means to compare the indoor temperature and the set temperature, and when the difference is within a predetermined temperature range, it In addition, when the difference is less than a predetermined temperature range, two types of thresholds are set depending on the magnitude relationship between the indoor temperature and the set temperature, and the air-conditioning and heating operation is performed within a predetermined temperature range centered around the set temperature. The indoor temperature is controlled within a predetermined temperature range around the set temperature. During the cooling/heating operation, the blowing air direction is deflected according to the temperature of the blowing air by the wind direction deflection means, and the cooling/heating operation is performed mainly by changing the temperature according to the difference between the indoor temperature and the set temperature by the operation control means. By adding a change in the wind direction of the Fukiyama airflow to the control of the air flow, the amount of stimulation given to the occupant's physiological functions or cerebrum can be increased, so a pleasant and comfortable environment can be realized efficiently and economically.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an air conditioner that is an embodiment of the present invention, FIG. FIG. 3 is a flowchart showing the operation sequence of the heating and cooling control means of an air conditioner according to an embodiment of the present invention, and FIG. 4 shows an example of the operation of controlling the direction of the blowing air by the wind direction deflection means during the heating and cooling control operation of FIG. 3. Flowchart, FIG. 5 is an operating characteristic diagram showing the relationship between the lower blowing angle and blowing temperature of the wind direction deflection means used in an air conditioner which is an embodiment of the present invention, and FIG. A characteristic diagram showing the relationship between the cooling capacity, room temperature, blowout level, and bottom blowout angle in each operation mode of a certain air softener. Fig. 7 is a block diagram showing a conventional air conditioner. Fig. 8 is a conventional air conditioner. 2 is a flowchart showing the operation of the heating and cooling control means of the air conditioner. In the figure, 2: Temperature detector 5: Microcomputer 13: Output control means 14: Cooling/heating generating means 15: One temperature detector: Vertical deflection louver. In addition, in the figures, the same reference numerals and symbols indicate the same or equivalent parts.

Claims (1)

[Scope of Claims] In an air conditioner that inputs an indoor temperature and a set temperature and performs heating and cooling operation to control the set temperature or a temperature close to the set temperature, a first temperature detection means for detecting the indoor temperature; The indoor temperature detected by the first temperature detection means is compared with the set temperature, and if the difference is greater than a predetermined temperature range, heating and cooling operation is performed according to the difference, and the difference is within a predetermined temperature range. an operation control means that sets two types of threshold values depending on the magnitude relationship between the indoor temperature and the set temperature when the temperature is below the set temperature, and performs cooling/heating operation in a predetermined temperature range centered on the set temperature; The method further comprises: a second temperature detection means for detecting the temperature of the hot air blowing air flow; and a wind direction deflection means for deflecting the blowing direction of the cold air or the warm air according to the temperature detected by the second temperature detection means. Characteristic air conditioner.