JP2013095347A - Air conditioner for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress deterioration of fuel consumption by suppressing that a working amount of an air conditioner becomes more than necessary, when a door or a window of a vehicle opens.SOLUTION: In an air conditioner of a vehicle with a function of restricting the working amount of the air conditioner, the air conditioner includes a compressor, an evaporator, a heater core, and a blower fan. It includes: a panel operation part for changing setting temperature of the air conditioner; an outdoor temperature detection sensor; an indoor temperature detection sensor; a door/window opening/closing detection part; further, a target blow out temperature calculation part for calculating the blow temperature; an air condition restriction determination part for determining necessity of the air condition restriction; a target value changing part for changing a target evaporator temperature and a target value of a target water temperature. The working amount of the air conditioner is restricted, when it is determined that heating load or cooling load of the air conditioner is large, and is detected that the door or the window of the vehicle opens, and a difference of an indoor temperature keeping value and an indoor temperature is more than a predetermined value.

Description

  The present invention relates to a vehicle air-conditioning control device, and more particularly to a vehicle air-conditioning control device having a function of suppressing an operation amount of an air-conditioning device from becoming larger than necessary.

The vehicle is also referred to as an auto air conditioner (“AUTO A / C”) in the air conditioning control device. ) Some are equipped with a system.
This automatic air conditioner system automatically adjusts the temperature and the amount of air blown into the passenger compartment so that the room temperature detected by a room temperature sensor that detects the temperature in the passenger compartment approaches the set temperature of the air conditioner.
In addition, the auto air conditioner system increases the operation amount as the difference between the room temperature and the set temperature of the air conditioner increases, thereby ensuring comfort in the passenger compartment.

JP 2006-281904 A

By the way, in the conventional vehicle air-conditioning control apparatus, there exists the above-mentioned patent document 1 as a prior art regarding the control content by said auto air-conditioning system.
This Patent Document 1 introduces a technique for preventing deterioration of air conditioning feeling when the amount of outside air introduced from a window increases due to an increase in vehicle speed while the vehicle window is open.
Specifically, the target blowing temperature is raised or lowered depending on whether the difference between the target blowing temperature and the outside air temperature is positive or negative.
Thereby, the air conditioner which maintained the comfort in the vehicle can be obtained.
However, in the conventional vehicle air-conditioning control device, when the difference between the outside air temperature and the temperature desired by the occupant is large, the operation amount of the blower fan is increased so that the comfort of the room can be obtained early, and the room air The amount of air blown is also increasing.
As a result, a large amount of battery power is consumed, leading to inconvenience that fuel consumption is deteriorated.
In addition, when the air conditioning control is not originally required, such as when getting on and off, loading and unloading, or opening a window, etc., the target blowing temperature is changed and the amount of air blown into the room is increased. Therefore, since it is controlled to increase the cooling and heating performance of the air conditioning, there is a disadvantage that the fuel efficiency is adversely affected.

  An object of the present invention is to provide a vehicle air-conditioning control device that suppresses deterioration in fuel consumption by suppressing an operation amount of an air-conditioning device from becoming larger than necessary when a vehicle door or window is open. To do.

  Accordingly, in order to eliminate the above-described disadvantages, the present invention provides a vehicle air-conditioning control apparatus having a function of limiting the amount of operation of the air-conditioning apparatus, wherein the air-conditioning apparatus includes a compressor that compresses refrigerant in the air-conditioning apparatus, An evaporator that reduces the blowing temperature, a heater core that raises the blowing temperature, a blower fan that blows air into the passenger compartment, a panel operation unit that can change the set temperature of the air conditioner, and an outside air temperature of the vehicle A target blowout air temperature sensor that detects an outside air temperature sensor that detects a temperature inside the vehicle and a door window open / close detector that detects whether the door or window of the vehicle is open, and calculates a blowing temperature into the vehicle interior A temperature calculation unit, an air conditioning restriction determination unit that determines whether air conditioning restriction is necessary, and a target value change unit that changes a target value of a target evaporator temperature and a target water temperature. When it is determined that the battery load or the cooling load is large, it is detected that the vehicle door or window is in an open state, and if the difference between the vehicle interior temperature holding value and the vehicle interior temperature exceeds a predetermined value, the air conditioning It is characterized by limiting the amount of operation of the apparatus.

  As described above in detail, according to the present invention, the air conditioner can be prevented from operating more than necessary by opening the door or window of the vehicle, and the fuel consumption of the vehicle can be prevented from deteriorating.

FIG. 1 is a control flowchart for performing air conditioning restriction determination of an air conditioning control device for a vehicle. (Example) FIG. 2 is a schematic configuration diagram of a vehicle air conditioning control device. (Example) FIG. 3 is a system diagram showing input / output of the vehicle air conditioning control device. (Example) FIG. 4 is a control flowchart for performing target value change control of the vehicle air conditioning control device. (Example)

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

1 to 4 show an embodiment of the present invention.
In FIG. 2, reference numeral 1 denotes a vehicle air conditioning control device.
The vehicle includes a power train (not shown) including a propulsion drive motor and a transmission, an air conditioner (also referred to as an “air conditioner”) (not shown) 2 that air-conditions the vehicle interior, and a battery. (Not shown).

As shown in FIG. 2, the air conditioner 2 performs air conditioning on the passenger compartment by performing dehumidification, cooling, and heating based on the air temperature and relative humidity in the passenger compartment. A formed body 4 is provided.
At this time, the air conditioner 2 includes the compressor 6 of the cooling device 5 that compresses the refrigerant in the air conditioner 2, the evaporator 7 that reduces the air temperature, the heater core 8 that increases the air temperature, and the vehicle interior. A blower fan 9 is provided as a blower fan that blows air.
That is, the passage forming body 4 of the air conditioner 2 has an internal so as to switch between an outside air introduction port 11 connected to the outside air introduction duct 10 and an inside air introduction port 13 connected to the inside air introduction duct 12 at one end on the upstream side. Connected to a defroster outlet 17 and a vent duct 18 connected to the defroster duct 16 at the other end on the downstream side, an inside / outside air switching damper 14 that swings to the side, a suction port actuator 15 that operates the inside / outside air switching damper 14 A first blower outlet switching damper 20 that swings inward so as to switch between the vent blower outlet 19 to be switched, a first mode actuator 21 that operates the first blower outlet switching damper 20, and other downstream ones. A second air outlet switching damper 24 that swings inward so as to open and close a foot air outlet 23 connected to the foot duct 22 at the end, and the second air outlet switching damper. It is provided and the second mode actuator 25 for operating the 24.
The first mode actuator 21 and the second mode actuator 25 can be similarly configured by connecting them as a single actuator with a link mechanism.

The passage forming body 4 includes the blower fan 9 on the downstream side of the inside / outside air switching damper 14, the evaporator 7 on the downstream side of the blower fan 9, and the heater core on the downstream side of the evaporator 7. 8, an air mix damper 26 that swings in the air flow passage 3 so as to adjust the air flow rate to the heater core 8, and an AM (automatic / manual) actuator 27 that operates the air mix damper 26. ing.
The blower fan 9 includes a fan motor 28 that drives the blower fan 9 and supplies cooled air to the vehicle interior.
The heater core 8 is driven to heat the passenger compartment.
In the vicinity of the heater core 8, an auxiliary (PTC) heater 30 constituting the heating device 29 is arranged.
Further, the compressor 6 constituting the cooling device 5 that is driven by electricity and used for cooling the passenger compartment is disposed outside the passage forming body 4.
The cooling device 5 is driven by electric power when the cooling system of the air conditioner 2 is used.
The heating device 29 is driven by electric power when the heating system of the air conditioner 2 is used.

Further, the air conditioning control device 1 mounted on the vehicle drives and controls the air conditioning device 2.
As shown in FIGS. 2 and 3, the air conditioning control device 1 automatically or manually drives and controls the air conditioning device 2 (also referred to as “air conditioning operation panel” or “AUTO A / C controller”). 31 and a vehicle air conditioning control means (also referred to as “EV controller” or “HEV controller”, “ECU”) 32 that communicates with the air conditioning control means 31.
The air conditioning control device 1 drives the air conditioning device 2 using the power supplied from the battery, but restricts the power supplied to the air conditioning device 2 at least when the state of charge of the battery is low.
The vehicle air conditioning control means 32 drives the compressor 6 as the cooling device 5 and the auxiliary heater 30 as the heating device 29. Further, the air-conditioning control means 31 calculates the target evaporator temperature and the target water temperature that are required to make the vehicle interior comfortable from the evaporator thermistor temperature, the water temperature, and the like.

As shown in FIGS. 2 and 3, the air-conditioning control device 1 is located on the input side of the air-conditioning control means 31 and the air-conditioning control means 31 and operates a panel that constitutes a part of the AUTO A / C system 33. Unit 34, an outside air temperature detection sensor 35 constituting a part of the AUTO A / C system 33, an inside air temperature detection sensor 36 constituting a part of the AUTO A / C system 33, and an input side of the air conditioning control means 31 And a door window opening / closing detector 37 for detecting the opening of the vehicle door or window.
At this time, the panel operation unit 34 can change the set temperature of the air conditioner 2.
The outside air temperature detection sensor 35 detects the outside air temperature of the vehicle.
The inside air temperature detection sensor 36 detects the passenger compartment temperature.
The door window opening / closing detection unit 37 detects the opening of the vehicle door and outputs a door opening signal, and detects the opening of the vehicle window and outputs the window opening signal. And a window opening signal output unit 39.
The air conditioning control means 31 performs control of the compressor control 40, the auxiliary heater control 41, and the blower fan stage number 42.

The air conditioning control means 31 includes a target blowing temperature calculation unit 43 that calculates the temperature of air blown into the passenger compartment, an air conditioning restriction determination unit 44 that determines whether air conditioning restriction is necessary, and changes in target values of the target evaporator temperature and the target water temperature. And a target value changing unit 45 for performing
The target blowing temperature calculation unit 43 inputs signals from the panel operation unit 34, the outside air temperature detection sensor 35, the inside air temperature detection sensor 36, the evaporator thermistor temperature, the water temperature, and the like of the AUTO A / C system 33, and enters the vehicle interior. Is calculated.
The air conditioning restriction determination unit 44 inputs signals from the panel operation unit 34 and the inside air temperature detection sensor 36 of the AUTO A / C system 33, while the door opening signal output unit 38 of the door window open / close detection unit 37 A signal from the window opening signal output unit 39 is input, and the necessity of air conditioning restriction is determined.
The target value changing unit 45 inputs a signal from the air conditioning restriction determination unit 44, outputs a control signal to the compressor control 40, the auxiliary heater control 41, and the blower fan stage number 42, and sets the target evaporator temperature and the target water temperature. Change the target value.

The air-conditioning control device 1 determines that the heating load or the cooling load of the air-conditioning device 2 is large, detects that the door or window of the vehicle is in an open state, and detects the vehicle interior temperature holding value and the vehicle interior temperature. If the difference between the two exceeds a predetermined value, the operation amount of the air conditioner 2 is limited.
More specifically, the air-conditioning control apparatus 1 has a target blowing temperature exceeding α1, a heating load with an outside air temperature of less than β1, a large heating load, a target blowing temperature of less than α2, and an outside air temperature exceeding β2. When it is determined that the cooling load is large, the door opening signal output unit 38 or the window opening signal output unit 39 of the door window opening / closing detection unit 37 detects that the door or window is open, It is detected whether the absolute value of the difference between the temperature holding value γ and the actual vehicle interior temperature exceeds a predetermined value δ.
When the absolute value of the difference between the vehicle interior temperature holding value γ and the actual vehicle interior temperature exceeds a predetermined value δ, the air conditioning control device 1 limits the operation amount of the air conditioning device 2. .
Therefore, the air conditioner 2 can be prevented from operating more than necessary by opening the door or window of the vehicle, and deterioration of the fuel consumption of the vehicle can be prevented.

Further, the air conditioning control device 1 raises the target evaporator temperature to increase the operating range temperature of the compressor 6 and reduces the target heater core temperature to the heater core 8 when the operating amount of the air conditioning device 2 is limited. The target value of the flowing water temperature is reduced, and the operation amount of the blower fan 9 is reduced.
Therefore, it is possible to limit the operation of the device that adjusts the air temperature and the device that blows air into the passenger compartment by restricting the operation amount of the air conditioner 2, thereby preventing deterioration of the fuel consumption of the vehicle.

Further, the air-conditioning control device 1 is configured such that the compressor 6 can change the rotational speed independently of the rotational speed of the engine that is a power source of the vehicle, or the variable capacity function that can change the refrigerant discharge capacity. When the restriction of the operation amount of the air conditioner 2 is performed, at least one of the compressor rotation speed or the refrigerant discharge capacity is further reduced.
Accordingly, when the compressor 6 capable of changing the operation amount independently of the engine speed is mounted, the operation amount of the compressor 6 is reduced when the operation amount of the air conditioner 2 is limited. Can prevent deterioration of fuel consumption.

Furthermore, the air conditioning control device 1 includes the auxiliary heater 30 that raises the water temperature using electric power, and reduces the operating amount of the auxiliary heater 30 when the operating amount of the air conditioning device 2 is limited.
Therefore, when the auxiliary heater 30 that raises the water temperature using electric power is mounted, when the operating amount of the air conditioner 2 is limited, the driving amount of the auxiliary heater 30 is reduced to reduce the fuel consumption of the vehicle. Deterioration can be prevented.

  If it adds, control by the air-conditioning control apparatus 1 of the said vehicle of this invention will be shown in FIG. 2. The said air-conditioning control means 31 and the said panel operation part 34 which a passenger | crew operates, and the air-conditioning apparatus which cools and heats Compressor (regardless of fixed, external variable capacity, electric) 6, data that can be recognized that the door or window is open (regardless of the destination), and the outside air temperature required for AUTO A / C control In a system composed of the detection sensor 35, the inside air temperature detection sensor 36, etc., when the passenger intentionally leaves the door or window open for a long time, the vehicle interior temperature rises (summer) or falls (winter). This is a control that limits the operating rate of air conditioning equipment and prevents fuel consumption deterioration.

Here, the control content by the air conditioning control device 1 of the vehicle will be described.
(1) When the AUTO A / C system 33 has entered the AUTO mode (also referred to as “auto mode”), that is, during the AUTO control (the blower fan and MODE are under the AUTO control), the target blowing temperature exceeds α1. In addition, it is determined whether or not the heating load with the outside air temperature less than β1 is large, the target blowing temperature is less than α2, the outside air temperature exceeds β2 and the cooling load is large.
When the target blowing temperature exceeds α1 and the outside air temperature is less than β1 and the heating load is large, the target blowing temperature is less than α2 and the outside air temperature exceeds β2 and the cooling load is large, the door or window It is determined whether or not is in an open state.
When the door or window is in an open state, it is determined that the influence on the air conditioner 2 is large, and an OPEN determination “Flag = 1” is set.
(2) When this OPEN determination “Flag = 1” has passed for a predetermined time or more, it is considered that the influence on the vehicle interior temperature is large, and control is performed using the stored vehicle interior temperature.
The stored vehicle interior temperature is the vehicle interior temperature retention value γ.
The vehicle interior temperature is stored only when the above-mentioned OPEN determination “Flag = 1” has not elapsed for a predetermined time or more, and when the OPEN determination “Flag = 1” has elapsed for a predetermined time or more, the vehicle interior temperature is stored. It is detected whether the absolute value of the difference between the hold value γ and the actual vehicle interior temperature exceeds a predetermined value δ.
In this case, since the warm air or cold air entering the vehicle through the windows and doors exceeds the air conditioning performance setting value, further improvement of the air conditioning performance is required.
In this area, air conditioning performance must continue to be raised and the impact on fuel efficiency will increase, so the target value will be changed to reduce air conditioning performance.
(3) When the change of the target value is confirmed, the target evaporator temperature that affects the ON / OFF of the compressor 6 is added to the normal calculation value by adding “A” to suppress the operation rate of the compressor 6.
Further, the target temperature of the heater core 8 is reduced.
Specifically, by setting the water temperature flowing through the heater core to “1B” as a normal calculation value, the request for an increase in the water temperature is suppressed, and the operating rate of heating such as a request for increasing the heat load on the engine is suppressed.
(The compressor 6, the auxiliary heater 30, etc. suppress the operating rate by lowering the target heat source temperature.)
Further, when the number of blower fan stages (“stage number” means “operating amount”) exceeds a certain value “C”, the power consumption by the blower fan 9 is suppressed by lowering the stage number.
In the case of the system of the compressor 6 and the auxiliary heater 30, the compressor rotation speed (required value of the swash plate of the compressor 6 in the case of an external variable capacity), the number of auxiliary heater stages, etc. are also constant values, that is, “D”, “E ”Reduce the operating rate of air conditioning equipment to below.

  Next, the operation will be described along the control flowchart for performing the air conditioning restriction determination of the vehicle air conditioning control device 1 of FIG.

When the control program for determining the air conditioning restriction of the air conditioning control device 1 of the vehicle starts (101), the process proceeds to the determination (102) as to whether or not the mode is the AUTO mode.
In the determination (102) of whether or not the mode is the AUTO mode, if the determination (102) is YES, whether or not the heating load at which the target outlet temperature exceeds α1 and the outside air temperature is less than β1 is large. Control proceeds to decision (103).
If the determination (102) is NO, the process proceeds to the processing (104) for setting the OPEN determination “Flag = 0”.
Further, in the determination (103) of whether or not the heating load with the target outlet temperature exceeding α1 and the outside air temperature being lower than β1 is large (103), if this determination (103) is YES, the door or window is open. The process proceeds to determination (105) as to whether or not it is in an open state.
If the determination (103) is NO, the process proceeds to determination (106) as to whether or not the target blowing temperature is less than α2, the outside air temperature exceeds β2 and the cooling load is large.
If this determination (106) is YES, the process proceeds to determination (105) on whether or not the door or window is open. If the determination (106) is NO, the above-described OPEN determination is performed. The process proceeds to processing (104) for setting “Flag = 0”.
In the above-described determination (105) on whether or not the door or window is in the open state (YES), if this determination (105) is YES, the process proceeds to processing (107) for setting the OPEN determination “Flag = 1”, and thereafter Then, the process proceeds to the determination (108) of whether or not the OPEN determination “Flag = 1” has exceeded a predetermined time.
If the determination (105) is NO, the process proceeds to the above-described process (104) for setting the OPEN determination “Flag = 0”.
Further, in the determination (108) of whether or not the above-described OPEN determination “Flag = 1” has passed for a predetermined time or more, if this determination (108) is YES, the vehicle interior temperature holding value γ and the actual vehicle interior temperature are determined. The process proceeds to determination (109) of whether or not the absolute value of the difference between the two exceeds a predetermined value δ.
When the determination (108) is NO, the detected vehicle interior temperature is stored as the vehicle interior temperature retention value γ, that is,
The process shifts to a process (110) in which the vehicle interior temperature retention value γ = the vehicle interior temperature is set, and then, the process shifts to a return (112) of a control program for performing air conditioning restriction determination of the vehicle air conditioning control device 1 described later.
In the determination (109) of whether or not the absolute value of the difference between the vehicle interior temperature holding value γ and the actual vehicle interior temperature exceeds the predetermined value δ, if this determination (109) is YES, the air conditioning restriction is restricted. In order to carry out, the target value change control process (111) is performed, and then the control program returns (112) to determine the air conditioning restriction of the air conditioning control device 1 of the vehicle.
Further, when the determination (109) is NO, the process directly proceeds to the return (112) of the control program for determining the air conditioning restriction of the air conditioning control device 1 of the vehicle.

  Moreover, it demonstrates along the flowchart for control which performs target value change control of the said air-conditioning control apparatus 1 of the said vehicle of FIG.

When the control program for performing the target value change control of the vehicle air-conditioning control device 1 starts (201), the following equation:
Target evaporator temperature = target evaporator temperature (AUTO A / C CONT calculated value) + A
Thus, the process proceeds to a process (202) for calculating a new target evaporator temperature, and the operating rate of the compressor 6 is suppressed.
In addition, after the processing (202),
Target water temperature = Target water temperature (AUTO A / C CONT calculated value) −B
Thus, the process proceeds to a process (203) for calculating a new target water temperature, and the target temperature of the heater core 8 is reduced.
After the process (203), whether the number of blower fan stages of the blower fan 9 exceeds a certain value “C”, that is,
Number of blower fan stages> C
The process proceeds to (204).
When this determination (204) is YES, the blower fan 9 of the blower fan 9 is set to a constant value “C”, that is,
Number of blower fan stages = C
(205), and after that, whether the compressor speed of the compressor 6 exceeds a certain value “D”, that is,
Compressor speed> D
The process proceeds to (206).
When the above-mentioned determination (204) is NO, whether the compressor speed of the compressor 6 directly exceeds the constant value “D”, that is,
Compressor speed> D
The process proceeds to (206).
This determination (206) is performed for a vehicle equipped with the compressor 6, the auxiliary heater 30, and the like. In the case of “not installed”, the processing after this determination (206) (the broken line portion in FIG. 4) is not performed, and the process proceeds to return (210) described later.
In the case of an external variable capacity, not the compressor rotation speed of the compressor 6 but the swash plate request (duty signal) or the like is suppressed to a predetermined value or less to reduce the refrigerant discharge capacity.
Then, whether the compressor speed of the compressor 6 described above exceeds a certain value “D”, that is,
Compressor speed> D
In the determination (206), if the determination (206) is YES, the compressor rotation speed is set to a constant value “D”.
Compressor speed = D
To the process (207), and then the number of PTC stages of the auxiliary heater 30 exceeds a certain value “E”, that is,
Number of PTC stages> E
The process proceeds to (208).
When the above-mentioned determination (206) is NO, whether the number of PTC stages of the auxiliary heater 30 exceeds a certain value “E”, that is,
Number of PTC stages> E
The process proceeds to (208).
Further, whether the number of PTC stages of the auxiliary heater 30 exceeds a certain value “E”, that is,
Number of PTC stages> E
In the determination (208), when the determination (208) is YES, the number of PTC stages of the auxiliary heater 30 is set to a constant value “E”.
PTC stage number = E
The process shifts to (209), and then shifts to the return (210) of the control program for performing the target value change control of the air conditioning control device 1 of the vehicle.
If the determination (209) is NO, the process directly proceeds to the return (210) of the control program for performing the target value change control of the air conditioning control device 1 of the vehicle.

  The present invention is not limited to the above-described embodiments, and various application modifications are possible.

For example, in addition to the embodiment of the present invention, the following special configuration is also possible.
(1) When engine speed control is performed in response to a request for air conditioning (for example, when raising the heat source for heating and increasing the compressor speed during cooling), the engine speed may be limited when the control is confirmed. Is possible.
(2) It is also possible to incorporate a configuration in which the control execution ON / OFF signal by the user is input as input and control is not performed.
(3) It is also possible to adopt a configuration in which vehicle speed conditions are taken in and implemented only when the vehicle is stopped (for example, loading and unloading, assuming a conversation while the vehicle is stopped, etc.).
(4) It is possible to limit the air conditioning performance and to notify the user with a buzzer or the like.
(5) In the case of a vehicle with a sunroof or an open car, the open / close state of the roof can be added to the door / window open determination.

DESCRIPTION OF SYMBOLS 1 Vehicle air-conditioning control apparatus 2 Air-conditioning apparatus (it is also called "air-conditioner")
DESCRIPTION OF SYMBOLS 3 Air distribution passage 4 Passage formation body 5 Cooling equipment 6 Compressor 7 Evaporator 8 Heater core 9 Blower fan 10 Outside air introduction duct 11 Outside air introduction port 12 Inside air introduction duct 13 Inside air introduction port 14 Inside / outside air switching damper 15 Suction inlet actuator 16 Defroster duct 17 Defroster Air outlet 18 Vent duct 19 Vent air outlet 20 1st air outlet switching damper 21 1st mode actuator 22 Foot duct 23 Foot air outlet 24 2nd air outlet switching damper 25 2nd mode actuator 26 Air mix damper 27 AM (automatic / manual) ) Actuator 28 Fan motor 29 Heating equipment 30 Auxiliary (PTC) heater 31 Air conditioning control means (also referred to as “air conditioning operation panel” or “AUTO A / C controller”)
32 Vehicle air conditioning control means (also referred to as “EV controller”, “HEV controller”, or “ECU”)
33 AUTO A / C system 34 Panel operation unit 35 Outside air temperature detection sensor 36 Inside air temperature detection sensor 37 Door window opening / closing detection unit 38 Door opening signal output unit 39 Window opening signal output unit 40 Compressor control 41 Auxiliary heater control 42 Blower fan stage number 43 Target blowout temperature calculation unit 44 Air conditioning restriction determination unit 45 Target value change unit

Claims (4)

  In a vehicle air-conditioning control device having a function of limiting the amount of operation of the air-conditioning device, the air-conditioning device includes a compressor that compresses a refrigerant in the air-conditioning device, an evaporator that reduces the air blowing temperature, and an air blowing temperature. A heater core and a blower fan that blows air into the vehicle interior, a panel operation unit that can change the set temperature of the air conditioner, an outdoor air temperature detection sensor that detects the outdoor air temperature of the vehicle, and a vehicle interior temperature An air temperature sensor that includes an inside air temperature detection sensor and a door window opening / closing detection unit that detects the opening of a vehicle door or window, and a target blowing temperature calculation unit that calculates a blowing temperature into the vehicle interior, and an air conditioner that determines whether air conditioning restriction is necessary. A limit determination unit, and a target value changing unit that changes target values of the target evaporator temperature and the target water temperature, and it is determined that the heating load or the cooling load of the air conditioner is large. And the operation amount of the air conditioner is limited when the difference between the vehicle interior temperature holding value and the vehicle interior temperature exceeds a predetermined value. Vehicle air conditioning control device.   When the operating amount of the air conditioner is restricted, the target evaporator temperature is increased to increase the compressor operating range temperature, the target heater core temperature is decreased to reduce the target value of the water temperature flowing to the heater core, and the blower fan The vehicle air conditioning control device according to claim 1, wherein an operation amount of the vehicle is reduced.   The compressor has at least one of a variable rotation speed function capable of changing a rotation speed independently of a rotation speed of an engine which is a power source of a vehicle or a variable capacity function capable of changing a refrigerant discharge capacity. 3. The vehicle air conditioning control device according to claim 1, wherein when the operation amount is restricted, at least one of the compressor rotation speed and the refrigerant discharge capacity is further reduced. 4.   3. The vehicle according to claim 1, further comprising: the auxiliary heater that raises the water temperature using electric power, wherein the operation amount of the auxiliary heater is reduced when the operation amount of the air conditioner is restricted. 4. Air conditioning control device.

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