JP3198707B2 - 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 for controlling the temperature and amount of air blown into a room by controlling the operation of air temperature adjusting means and air blowing means such as a refrigeration cycle.

[0002]

2. Description of the Related Art In recent years, for example, an auto air conditioner mounted on an automobile calculates an outlet air temperature TAO required for maintaining the interior of the vehicle at a set temperature, and calculates an air flow amount VAO based on the outlet air temperature TAO. As shown in FIG.

[0003]

The amount of heat applied to the passenger compartment is determined by the blow-out temperature TAO and the blow-off air flow amount VAO. To generate the same heat amount, the larger the air flow, the larger the COP (coefficient of performance) of the refrigeration cycle. Therefore, from the viewpoint of energy saving, it is preferable to increase the blown air amount VAO.

However, in the above-described conventional configuration, the blowing temperature TAO is preferentially determined according to the set temperature.
Since the blow-off air amount VAO is determined based on the blow-out temperature TAO, the blow-off air amount VAO is uniformly determined regardless of the COP of the refrigeration cycle, which reduces the COP of the refrigeration cycle. Cause.
On the other hand, if the blowing air amount VAO is too large, the wind hitting the occupant becomes too strong, which may cause discomfort to the occupant.

[0005] Further, in the conventional configuration, FIG.
Even when the blown air amount VAO is minimized (when the amount of heat to be given to the vehicle interior is small), the compressor of the refrigeration cycle is operated as needed to finely adjust the blowout temperature TAO. This is another factor that hinders energy saving.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide an air conditioner capable of performing ideal air conditioning control having both energy saving and comfort. is there.

[0007]

Means for Solving the Problems According to the first aspect of the present invention, there is provided a method for controlling the temperature of an air temperature adjusting means such as a refrigeration cycle and the blowing means, and controlling the temperature of the air blown into a room. Sky to control the blowing air volume
Adjusting the device performs a means for determining the amount of heat required for room air conditioning, the air blowing operation by the blowing means to stop the operation of the air temperature adjusting means when in need amount of heat required set value range, the heat requirements operation of determining the air temperature, the air temperature adjusting means and the blowing means to determine the airflow volume to obtain the necessary amount of heat to the air temperature to a reference in accordance with but its heat requirements when the outside the set value Control means for controlling the discharge temperature, and controlling the blow-out temperature to 8 during cooling.
The gist of the present invention is an air conditioner which is set within at least one temperature range of not lower than 50 ° C. during heating . The invention described in claim 2 is the same as the invention described in claim 1.
In addition to the invention, a power saving mode for selecting a power saving mode is provided.
And a power saving mode selecting means.
Control by the control means when the power mode is selected
The gist of the present invention is an air conditioner that performs the above.

[0008]

In the air conditioning operation, the amount of heat required for indoor air conditioning is determined, and it is determined whether the required amount of heat is within a set value range.
If the required amount of heat is within the set value range, it can be estimated that the indoor temperature state is within the range where the comfort is not lost,
The operation of the air temperature adjusting means such as a refrigeration cycle is stopped, and the air blowing operation is performed by the air blowing means to reduce the operating rate of the air temperature adjusting means while ensuring comfort.

On the other hand, when the required heat amount is out of the set value range, the blow-out temperature is determined in accordance with the required heat amount, and the blow-out air amount is determined so as to obtain the required heat amount based on the blow-out temperature. And controls the operation of the blowing means.
At this time, the blowing temperature is set within at least one of the temperature ranges of 8 ° C. or more during cooling and 50 ° C. or less during heating. Therefore, within a range in which comfort is not lost, a higher temperature setting during cooling and a lower temperature during heating are set . The temperature is set, and the amount of blown air can be increased within a range where the comfort is not lost, so that the energy efficiency (such as the COP of the refrigeration cycle) can be improved.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to an air conditioner for an electric vehicle will be described with reference to the drawings. First, FIG.
The schematic configuration of the entire air conditioner will be described based on FIG. On the upstream side of the blower case 21, there are provided an outside air suction port 22 for sucking air (outside air) outside the vehicle compartment and two inside air suction ports 23 and 24 for sucking air (inside air) inside the vehicle compartment. An inside / outside air damper 25 is provided at an intermediate portion between the inside air intake port 23 and the outside air intake port 22. The opening degree of the inside / outside air damper 25 is adjusted by a servo motor 26, so that the outside air intake port 22 The intake air temperature is adjusted by varying the mixing ratio of the air taken in from the intake ports 23 and 24. The downstream side of the inside / outside air damper 25 and the inside air intake port 24
Downstream of the blowers 27, 28,
Are provided, and these two blowers 27 and 28 are attached to the rotating shaft of a blower motor 29. The blower motor 29 is driven by a drive circuit 30.

On the other hand, an evaporator 31 is disposed downstream of the blowers 27 and 28, and the downstream of the evaporator 31 is partitioned by a partition plate 32 into two upper and lower ventilation paths 33 and 34. A condenser 35 is disposed in the lower ventilation path 34, and an upper portion of the condenser 35 projects into the upper ventilation path 33. This capacitor 35
A strong cooling damper 36 is arranged above the above. By driving the strong cooling damper 36 by a servomotor 37,
The amount of air that bypasses the condenser 35 is variable. Further, the partition plate 32 on the downstream side of the condenser 35
A communication damper 38 is disposed in a communication port 32a provided in the partition plate 32. The communication damper 38 is driven by a servomotor 39 to vary the amount of air passing through the communication port 32a of the partition plate 32, thereby achieving a single mode. (For example, "VENT"
Mode, “DEF” mode, etc.).

Downstream of the upper ventilation passage 33, a differential air outlet 40 and a vent air outlet 41 are provided. Dampers 48 and 49 are provided at the vent outlet 41 and the differential outlet 40, respectively, and these dampers 48 and 49 are driven by servo motors 50 and 51, respectively. On the other hand, on the downstream side of the lower ventilation path 34, a foot outlet 52 for blowing the wind toward the feet of the occupant is provided, and a damper 54 driven by a servomotor 53 is also provided on the foot outlet 52. Have been.

On the other hand, the above-described evaporator 31 and condenser 35 are components of a refrigeration cycle 55 that also serves as a heat pump, which is an air temperature adjusting means. The refrigeration cycle 55 includes a compressor 56, a four-way switching valve 57, an outdoor heat exchanger 58, check valves 59 and 60, and a capillary 6.
1, a solenoid valve 62, 63, 64, a pressure reducing valve 65, an accumulator 90, an evaporator 31, and a condenser 35 are connected by piping. Each solenoid valve 62, 63, 64
The four-way switching valve 57 is switched as shown in Table 1 below according to the operation mode of the refrigeration cycle 55.

[0014]

[Table 1]

As is clear from Table 1, in the cooling mode, the four-way switching valve 57 is switched to the position (on position) indicated by the dotted line in FIG.
is discharged from the check valve 59 to the outdoor heat exchanger 5
8 → the capillary 61 → the evaporator 31 → the accumulator 90 → the circulation through the suction port 56 b of the compressor 56. Thereby, the discharge port 56a of the compressor 56
The high-temperature gaseous refrigerant discharged from the radiator radiates and liquefies in the outdoor heat exchanger 58, and the liquid refrigerant evaporates in the evaporator 31, so that the wind passing through the evaporator 31 is cooled.

On the other hand, in the heating mode, the four-way switching valve 57 is switched to a position (off position) shown by a solid line in FIG.
The refrigerant discharged from the discharge port 56a of the compressor 56 circulates through the path of the condenser 35 → the pressure reducing valve 65 → the check valve 60 → the outdoor heat exchanger 58 → the electromagnetic valve 62 → the accumulator 90 → the suction port 56b of the compressor 56. As a result, the high-temperature gas refrigerant discharged from the discharge port 56a of the compressor 56 dissipates heat and liquefies in the condenser 35, and the heat that passes through the condenser 35 is warmed.

In the defrosting mode, the solenoid valve 63 is opened when the four-way switching valve 57 is at the position shown by the solid line in FIG. 1, and the high-temperature gas refrigerant discharged from the discharge port 56a of the compressor 56 is supplied to the condenser 35 and the solenoid valve. The frost is also supplied to the outdoor heat exchanger 58 via 63 and adheres to the surface of the outdoor heat exchanger 58 to remove frost.

Further, in the dehumidification H mode, the four-way switching valve 57
Is the position shown by the solid line in FIG. 1, the solenoid valve 63 is closed and the solenoid valve 6 is closed.
4 is opened, a part of the liquid refrigerant supplied to the outdoor heat exchanger 58 is also supplied to the evaporator 31, and the evaporator 31 is dehumidified by a weak cooling action. In the dehumidification C mode, the solenoid valve 63 is opened at the position where the four-way switching valve 57 is indicated by the solid line in FIG. 1, and the outdoor heat exchanger 58 also functions as a condenser together with the condenser 35. The refrigerant liquefied in both of the outdoor heat exchangers 58 is supplied to the evaporator 31, and the evaporator 3
It is dehumidified by the stronger cooling action of (1).

The outdoor heat exchanger 58 is provided with an outdoor fan 89 for forced cooling. The fan motor 89a of the outdoor fan 89 has a refrigeration cycle 5 as shown in FIG.
5, high-speed rotation "Hi", low-speed rotation "Lo", and stop "OF" based on output data of various sensors described later.
For example, in the cooling mode, the outside air temperature Tam detected by the outside air temperature sensor 78 becomes “Hi” at 25 ° C. or higher and “Lo” at 22 ° C. or lower. In the heating mode, the outside air temperature Tam
Becomes “Hi” below 13 ° C. and “Lo” above 16 ° C.
Becomes In the dehumidification H mode, the wind temperature immediately after passing through the evaporator 31 (hereinafter referred to as “evaporator outlet temperature”) Te
Stops at 4 ° C or higher and turns “OFF” at 2 ° C or lower.
i ”and“ Lo ”in the range of 3 ° C. → 4 ° C. and 3 ° C. → 2 ° C.
Becomes In the dehumidification C mode, the refrigerant discharge pressure Pd of the compressor 56 detected by the refrigerant discharge pressure sensor 88 and the refrigerant discharge temperature Td of the compressor 56 cause H
The priority is determined in the order of i>Lo> OFF. For example, if the refrigerant discharge pressure Pd is 19 kgf / cm2 G or more,
No matter what value Td is, it will always be "Hi".

On the other hand, the compressor 5 of the refrigeration cycle 55
The rotation speed of the motor 66 that drives the motor 6 is controlled by the inverter 67. The inverter 67, the servo motors 26, 37, 39, 50, 51, 53, the fan motor 89 a of the outdoor fan 89 and the drive circuit 30 of the blower motor 29 are controlled by an electronic control unit (hereinafter referred to as “ECU”) 68. This ECU 68 is mainly composed of a microcomputer,
9, RAM 70 for temporarily storing various data, etc., FIG.
ROM 71 storing a control program for the A / D converter, an A / D converter 72 for converting input data into digital values,
An / O section 73, a crystal oscillator 74 for generating a reference signal of several MHz, and the like are provided, and power is supplied from a battery 75 via an ignition switch 76.

This ECU 68 detects an inside air temperature Tr, an inside air temperature sensor 77, detects an outside air temperature Tam, an outside air temperature sensor 78, detects a solar radiation amount Ts entering the vehicle interior, and detects an evaporator outlet temperature Te. Evaporator outlet temperature sensor 80, wind temperature immediately after passing through condenser 35 (hereinafter referred to as “condenser outlet temperature”) T
c, a refrigerant discharge pressure sensor 88 for detecting the refrigerant discharge pressure Pd of the compressor 56, a temperature sensation setting device 82 for the occupant to manually set a set temperature sensation Sset as a control target, and an evaporator 31. The detection signals from the intake air temperature sensor 46 for detecting the temperature of the air sucked into the air (hereinafter referred to as “intake air temperature”) Tin, the discharge temperature sensor 91 for detecting the refrigerant discharge temperature Td, and the like are transmitted via the A / D converter 72. Read.

The above-mentioned warm feeling setting device 82 has a cooling key 8
2A and a warming key 82b are provided on an air conditioner control panel 83 arranged at the center of an instrument panel (not shown) of the vehicle. As shown in FIG. 2, the air conditioner control panel 83
Above the warm feeling setting device 82, a warm feeling display section 84 in which a plurality of light emitting elements 84n are arranged in a horizontal line is provided. The warm feeling display section 84 displays the set warm feeling Sset input by the cool key 82a and the warm key 82b. The set temperature sensation Sset is an index indicating how much to cool or warm up based on the average temperature of 25 ° C. [see FIG. 6 (a)], and before the keys 82a and 82b are operated. In the state, the light emitting element 84 at the center of the warm feeling display section 84
Each time the cooling key 82a is pressed once, the set temperature sensation Sset is lowered by one rank to shift the lighting position one position to the left, and each time the warming key 82b is pressed once, the set temperature is set. The sense Sset is raised one rank at a time, and the lighting position is shifted to the right one by one. In addition, the air conditioner control panel 83 is provided with an air conditioner on / off switch 85, a rear defroster switch 86, and a front defroster switch 87.

On the other hand, the ECU 68 executes the control program shown in FIG.
When the required heat quantity QAO is within a set value (for example, ± 250 kcal / h), the refrigeration cycle 55
Is stopped and the blower 27, 28 performs the blowing operation. When the required heat amount QAO is out of the set value range, the blowout temperature TAO is determined according to the required heat amount QAO, and the blowout temperature TA is determined.
The blowing air volume VAO so as to obtain the required heat quantity QAO based on AO
And controls the air-conditioning operation. In this case, as shown by the solid line in FIG. 5, the blowout temperature TAO is uniformly set to, for example, 13 ° C. in the cooling mode, and the blowout temperature TAO is uniformly set to, for example, 40 ° C. in the heating mode. In the blowing mode, the blowing air amount VAO is set to, for example, 20
It is set to 0 m3 / h.

Hereinafter, the control contents of the ECU 68 will be described with reference to the flowchart of FIG. First, step 10
At 0, after executing an initialization process for initializing a counter and a flag to be used for the subsequent calculation process, the process proceeds to step 110 to read the set temperature sensation Sset inputted by operating the temperature sensation setting device 82 and , The inside air temperature sensor 77, the outside air temperature sensor 78, the solar radiation sensor 79, the evaporator outlet temperature sensor 80, the condenser outlet temperature sensor 81 and the inside air temperature Tr, the outside air temperature Tam, the solar radiation amount Ts, the evaporator outlet temperature detected by the intake air temperature sensor 46. Te,
Each data of the condenser outlet temperature Tc and the intake air temperature Tin is read.

Next, the routine proceeds to step 120, where the set temperature Tset is obtained from the set temperature sensation Sset, the outside air temperature Tam and the amount of solar radiation Ts by the following equation (1). Tset = f (Sset, Tam, Ts) = Tset ′ + ΔTam + ΔTs (1) where Tset ′ = 25 + 0.4 Sset.
See (a) ΔTam = (10−Tam) / 20... See FIG. 6 (b) ΔTs = −Ts / 1000... See FIG. 6 (c)

After calculating the set temperature Tset as described above, the routine proceeds to step 130, where the set temperature Tset is set in the vehicle interior.
The amount of heat QAO required to maintain set is calculated by the following equation (2). QAO = K1 × Tset−K2 × Tr−K3 × Tam−K4 × Ts + C (2) (K1, K2, K3, K4: coefficient, C: constant) The required heat quantity QAO was calculated by the equation (2). Thereafter, the process proceeds to step 140 to determine whether the operation mode of the air-conditioning operation is cooling, heating, or air blowing as follows.
That is, the required heat amount QAO is set to a set value, for example, ± 250 kc
-250kcal / h ≦ QAO ≦ + 250kc compared to al / h
When al / h, the operation of the refrigeration cycle 55 is stopped to determine the air blowing mode in which the air blowing operation by the blowers 27 and 28 is performed. When QAO <-250 kcal / h, the cooling mode is determined. When QAO> +250 kcal / h, the cooling mode is determined. It is determined that the mode is the heating mode.

Thereafter, the routine proceeds to step 150, where the target outlet temperature TAO is set to, for example, 13 ° C. in the cooling mode.
In the heating mode, for example, it is set to 40 ° C. Next, the routine proceeds to step 160, where the blown air amount V is calculated by the following equation (3).
Calculate AO.

VAO = QAO / {Cp · γ · (TAO−Tin)} (3) where Cp is the specific heat of air, γ is the specific gravity of air, and Tin is the intake air temperature sucked into the evaporator 31. . Also, T
AO is the outlet temperature, and as described above, 13 in cooling mode.
° C and 40 ° C in the heating mode. In the case of the blowing mode, the blowing air amount VAO is set to 200 m3 / h.

The blown air amount VAO obtained in this manner
As shown in FIG. 5, the minimum value is 200 m @ 3 / h, which is the same as the conventional blowing air amount (minimum value is 120 to 150 m @ 3 / h).
The air volume is larger than h). The maximum value of the blown air amount VAO is set to 450 m3 / h in consideration of the blowing capacity and comfort of the blowers 27 and 28. Therefore, in this embodiment, the blown air amount VAO is 200 m3 / h to 450 m3.
/ H is set according to the required heat quantity QAO.

After calculating the blown air amount VAO as described above, the routine proceeds to step 170, where the temperature of the air sucked from the inside air intake ports 23 and 24 and the outside air intake port 22 (intake air temperature).
The opening degree of the inside / outside air damper 25 is calculated so as to reduce the temperature difference between Tin and the blowing temperature TAO. After this, step 18
0, and based on the blowing temperature TAO and the blowing air amount VAO obtained in steps 150 and 160 described above, each damper 3
6, 38, 48, 49, and 54 are determined, and the blowing mode is set to “VENT”, “B / L”, “FOOT”, or “FOO”.
OT / DEF ”or“ DEF ”.

The various control data determined as described above are output to each device (step 190), and thereafter, the process returns to the above-described step 110 to repeat the processing, thereby controlling the air conditioning operation. At this time, in order to realize the blown air amount VAO obtained in step 160, the blower motor 29
Is determined according to the blowing mode based on the voltage characteristics shown in FIG.

In this case, the compressor 56 of the refrigeration cycle 55 is stopped when the blowing temperature TAO required to maintain the vehicle interior at the set temperature Tset can be produced by mixing the inside air and the outside air. On the other hand, when the required blow-out temperature TAO cannot be produced only by the inside and outside air, the compressor 56 is driven by the inverter 67 and the refrigeration cycle 55 is operated in the operation mode determined in step 140. At this time, in the cooling mode, feedback control is performed by PI control or fuzzy control on the evaporator outlet temperature Te detected by the evaporator outlet temperature sensor 80, and in the heating mode, the capacitor detected by the condenser outlet temperature sensor 81 is used. P for outlet temperature Tc
Feedback control is performed by I control or fuzzy control.

According to the present embodiment described above, when the required heat quantity QAO is within the set value range, it is estimated that the temperature condition in the vehicle compartment is within the range where the comfort is not lost, and the refrigeration cycle 5
Since the operation of the refrigeration cycle 55 is stopped and the blowing operation by the blowers 27 and 28 is performed, the operation rate of the refrigeration cycle 55 can be reduced while ensuring comfort.

On the other hand, when the required heat amount QAO is out of the set value range, the blowout temperature TAO is determined according to the required heat amount QAO, and the blowout air amount VAO is determined based on the blowout temperature TAO so as to obtain the required heat amount QAO. At this time,
Since the blowout temperature TAO is set to 13 ° C. during cooling and 40 ° C. during heating, a higher temperature setting during cooling and a lower temperature setting during heating are provided within a range where comfort is not lost (conventionally, 3 ° C. to 60 ° C.). The blowing temperature TAO is linearly and variably set in the range of ° C.). For this reason, in this embodiment, the blow-off air volume VAO can be increased within a range in which comfort is not lost, and the refrigeration cycle 5
5 (heat pump) can be improved, and in combination with the above-described circumstances, energy saving and power saving can be achieved, and comfort can be secured.

In this embodiment, the blowing temperature TAO at the time of cooling is used.
Is set to 13 ° C., but may be set to any degree as long as the temperature is 8 ° C. or more as long as the comfort is not lost. Similarly, the blowing temperature TAO at the time of heating is not limited to 40 ° C., but may be set at any temperature within 50 ° C. as long as comfort is not lost.
Further, in this embodiment, the blowing temperature TAO is set to a constant value for both cooling and heating. However, as shown by a dotted line in FIG.
The blowing temperature TAO may be changed linearly or stepwise in accordance with the temperature.
If the blowing temperature TAO is set within the range of 0 ° C., almost the same effects as in the present embodiment can be obtained. On the other hand, the set value of the required heat quantity QAO for determining the cooling / heating / blowing mode is also ± 2.
It is needless to say that the value is not limited to 50 kcal / h and may be changed.

Further, in the present embodiment, the blowout temperature TAO is obtained from the required heat amount QAO, and the required heat amount QAO is calculated from the blowout temperature TAO. (At the time of heating), the required heat quantity QAO can be estimated from the temperature of the evaporator 31 at the time of cooling or the temperature of the condenser 35 at the time of heating. TAO
May be calculated to calculate the blowout air amount VAO.

In this embodiment, the heat pump (refrigeration cycle 55) is used as a heat source for heating. However, an electric heater may be used. Further, in an engine-driven automobile, engine cooling hot water circulates. A heater core may be used.

Further, an operation switch capable of arbitrarily setting the blowing temperature TAO is provided so that the power saving effect can be changed according to the occupant's preference, or a power saving mode selection switch is provided to provide this power saving mode. The control of this embodiment may be executed when the selection switch is turned on. Further, the thermal sensation setting device 82 is not limited to the key input type, and may be configured using, for example, a dial switch.

In addition, the present invention is not limited to an air conditioner for an electric vehicle, but may be applied to various types of air conditioners such as an air conditioner for an engine-driven vehicle and an air conditioner for a house. -It may be applied to an air conditioner that performs only one of heating. Furthermore, even in an air conditioner having both functions of cooling and heating, the present invention may be applied to only one of the functions of cooling and heating. It goes without saying that various modifications can be made.

[0040]

As is apparent from the above description, according to the present invention, when the amount of heat required for indoor air conditioning is within a set value range (within a range in which comfort is not lost), air in a refrigeration cycle or the like is used. Since the operation of the temperature adjusting means is stopped and the air blowing operation by the air blowing means is performed, the operating rate of the air temperature adjusting means can be reduced while ensuring comfort.

On the other hand, when the heat requirements are out of the setting value range is to determine the outlet temperature in accordance with the heat requirements, this time, the air temperature, 8 ° C. or higher during cooling, during heating 50
Since it is set within at least one temperature range below ℃,
Within a range not losing the comfort temperature setting of elevated during cooling becomes a lower temperature setting at the time of heating, and can increase the airflow volume within a range that does not lose the comfort, improving the energy efficiency (COP, etc. of the refrigeration cycle) And energy saving can be achieved in combination with the above-mentioned circumstances.
Comfort can be secured.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an entire air conditioner showing one embodiment of the present invention.

FIG. 2 is a front view of an air conditioner control panel.

FIG. 3 is a diagram illustrating a relationship between an operation mode of a refrigeration cycle and an operation mode of an outdoor fan.

FIG. 4 is a flowchart showing a control program.

FIG. 5 is a characteristic diagram illustrating a relationship between a required heat amount QAO and an outlet temperature TAO and an outlet air amount VAO.

6A is a diagram showing a relationship between a set thermal sensation Sset and Tset ', FIG. 6B is a diagram showing a relationship between an outside air temperature Tam and ΔTam, and FIG. 6C is a diagram showing a relationship between solar radiation Ts and ΔTs. Figure showing

FIG. 7 is a diagram showing a relationship between a blown air amount VAO and a blower voltage;

FIG. 8 is a characteristic diagram showing a relationship between a conventional blowing temperature TAO and a blowing air volume VAO.

[Explanation of symbols]

22 ... outside air suction port, 23, 24 ... inside air suction port, 25 ... inside and outside air damper, 31 ... evaporator, 35 ... condenser,
Reference numeral 40: Differential outlet, 41: Vent outlet, 46: Intake temperature sensor, 52: Foot outlet, 55: Refrigeration cycle (air temperature control means), 56: Compressor, 57: Four-way switching valve, 58: Outdoor heat exchange Vessel, 61 ... capillary, 62 ~
64: solenoid valve, 65: pressure reducing valve, 67: inverter, 68
... ECU (control means), 77 ... inside air temperature sensor, 78 ...
Outside air temperature sensor, 79: solar radiation sensor, 80: evaporator outlet temperature sensor, 81: condenser outlet temperature sensor,
82: warm feeling setting device, 82a: cooling key, 82b: warming key, 84: warm feeling display section, 88: refrigerant pressure sensor, 8
9 ... Outdoor fan.

Continuation of front page (72) Inventor Takahisa Suzuki 1-1-1 Showa-cho, Kariya-shi, Aichi Japan Inside Denso Co., Ltd. (58) Field surveyed (Int. Cl. ⁷ , DB name) B60H 1/00 101

Claims (2)

(57) [Claims] 1. An air conditioner in which the temperature and amount of air blown into a room are controlled by operation control of an air temperature adjusting means such as a refrigeration cycle and a blowing means, and a means for calculating a heat quantity required for air conditioning in the room. If, when necessary amount of heat required in the setpoint range performs air blowing operation by the blowing means to stop the operation of the air temperature adjusting means, wherein when heat requirements is outside the set value depending on the heat requirements Determining the blow-out temperature, controlling the operation of the air temperature adjusting means and the blower means by determining the blow-off air amount so as to obtain a required amount of heat based on the blow-out temperature, the blow-out temperature, 8 ° C or higher for cooling, 50 for heating
℃ air-conditioning system and sets in at least one of the temperature range below. 2. A power saving mode selection for selecting a power saving mode.
With selection means, The power saving mode is selected by this power saving mode selection means.
The control by the control means when performed.
The air conditioner according to claim 1.