JP3167451B2 - Vehicle heating system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating device for a vehicle, and more particularly to a heating device for a vehicle having an interior component provided with a heating element.

[0002]

2. Description of the Related Art An air conditioner for a vehicle generally includes an evaporator (cooling coil) connected to a refrigerant circuit having a compressor for compressing a refrigerant, and a heater core (heating coil) connected to a cooling water circuit of an engine. By the heat exchange between the evaporator and the heater core and the air-conditioning air, the air-conditioned air adjusted to the desired blow-out temperature is blown into the vehicle compartment.

In this type of air conditioner, an air conditioner equipped with an automatic control device for automatically adjusting the blow-out temperature in order to keep the temperature in the passenger compartment at a desired temperature has been put to practical use. The automatic control device generally controls the heat balance between the heat exchange capacity of the air conditioner and the heat load of the passenger compartment to maintain the room temperature at an appropriate temperature in order to maintain the interior temperature of the vehicle at a desired comfortable temperature. It is configured.

For example, in the air conditioner disclosed in Japanese Patent Publication No. 62-8327, the relationship between the air conditioning condition such as the outside air temperature and the amount of blown air is set in advance, and the amount of blown air is determined based on the detected air condition. A required blow-off air temperature is calculated according to the determined blow-off air volume, and the opening degree of the air mix damper is controlled so as to obtain the blow-off air temperature thus determined.

[0005] The heating function of the air conditioner constitutes a heating device that heats the air in the vehicle cabin during winter and appropriately maintains the atmosphere in the vehicle cabin. Here, as a vehicle heating device,
In addition to heating devices using air as a medium, there are known interior or outfittings configured to maintain an appropriate atmosphere in a vehicle cabin by directly transferring heat to a human body or clothes without using air as a medium. ing. For example, interior components with a heating element that heats a portion that comes into contact with the human body or clothing, such as seat warmers, floor mats, or handle warmers,
The surface of a cooled sheet or the like is extremely cold when the vehicle is buried in a predetermined portion where the human body or clothing directly touches, for example, a seat, a floor, a steering wheel, or the like, or covers these portions, and when the vehicle starts in winter. Not to give the crew
These parts are quickly heated at the time of starting, and the atmosphere in the vehicle interior is improved.

Japanese Utility Model Application Laid-Open No. 75208/1995 discloses a vehicle interior temperature control device that detects a vehicle interior temperature and a seat surface temperature and compares these temperatures to determine a desired seat surface temperature. A maintenance vehicle heating device is disclosed.
This publication further calculates the initial heating amount of the heating element at the time of starting the air conditioner based on the heat load of the vehicle compartment, and controls the heating of the interior components while correcting the heating amount of the heating element after the air conditioning apparatus starts. A vehicle heating device configured as described above is disclosed.

[0007]

However, the heating by the interior parts of this kind increases as the temperature in the passenger compartment rises due to the operation of the air conditioner, or the surface temperature of the seat or the like rises due to heat generation of the human body. Heating of the interior components, which becomes unnecessary and continues for an excessively long time, rather unpleasantly gives occupants a feeling of discomfort.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a vehicle for a vehicle capable of automatically controlling the operation of an interior component having a heating element while ensuring passenger comfort. It is to provide a heating device.

[0009]

[Means for Solving the Technical Problems and Actions] The applicant of the present invention has disclosed in Japanese Patent Application No. 4-115417,
Warm-up control in which the comfort experienced by the occupant during the automatic heating control of the air conditioner during the warm-up operation of the engine is indexed as a comfort index, and heating control during the warm-up operation is performed based on the comfort index. A vehicle air conditioner having means is proposed.

The present invention has been made to solve the above-mentioned problem by applying such a comfort index to the control of the operation time of a seat warmer or the like. Equipped with an air conditioner that heats the air in the vehicle cabin by controlling the blowout temperature and blowout amount, and a heating element, and heats the occupant by direct heat transfer with the human body or clothes without using air as a medium. A heating device for a vehicle having an interior component, comprising: a control device for operating the interior component by causing the heating element to generate heat, the control device having a comfort that an occupant experiences when operating the interior component. A comfort index calculating means for calculating as a comfort index based on at least the air blowing temperature and the blowing amount of the air conditioner, the temperature in the vehicle interior, and the temperature of the interior components; and the comfort index exceeds a predetermined value. And interior equipment operation control means for stopping the operation and regulation of the interior part of the heating of the heating element, vehicle heating apparatus characterized by comprising a are provided when the.

According to the present invention having the above configuration, when the comfort index calculated based on the air blowing temperature and the blowing amount of the air conditioner, the temperature in the vehicle compartment, and the temperature of the interior components is larger than a predetermined value, the heat generation is performed. Since the operation of the interior component having a body is stopped, the operation of the interior component can be controlled while ensuring the comfort of the occupant.

[0012]

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail. FIG. 1 is an overall configuration diagram showing an embodiment of a vehicle air conditioner, a seat warmer, and a floor mat to which the vehicle heating device of the present invention is applied. As shown in FIG. 1, a vehicle air conditioner (hereinafter, referred to as an air conditioner) includes a ventilation duct 1.
In the upstream portion of the ventilation duct 1, an outside air inlet 2 for introducing outside air, an inside air inlet 3 for introducing air in the vehicle cabin, and inside and outside for selectively opening and closing these inlets 2, 3 An air switching damper 4 is provided. Further, on the downstream side of the ventilation duct 1, a vent outlet 5, a foot outlet 6, a defroster outlet 7, and these outlets 5, 6, 7
Three mode switching dampers 8 for selectively guiding blown air to the
9 and 10 are provided.

The vent outlet 5 opens toward the upper body of the occupant, and blows out conditioned air mainly during cooling operation. The foot outlet 6 opens near the feet of the occupant, and blows out conditioned air mainly during a heating operation. In addition, the defroster outlet 7 opens toward the interior surface of the windshield or the door glass, and forms an air-conditioned airflow along the surface of the glass.

A blower 11 of a variable air volume type is disposed on the upstream side of the ventilation duct 1, and the air conditioner operates the blower 11 to transfer the intake air taken in from the inside air inlet 2 or the outside air inlet 3 to the ventilation duct 1. And it is comprised so that it may blow out to a vehicle interior through the said outlet 5,6,7. The air conditioner includes a cooling heat exchanger 12 and a heating heat exchanger 14 disposed in the ventilation duct 1, and the cooling heat exchanger 12 is disposed downstream of the blower 11, The vessel 14 is arranged downstream of the cooling heat exchanger 12. The cooling heat exchanger 12 is connected to the refrigerant circuit X including the compressor 15, the condenser 16, and the receiver 17, and functions as an evaporator. The compressor 15 is selectively connected to a rotating element of the engine 18 by turning on / off an electromagnetic clutch. The heating heat exchanger 14 is provided with the engine 1
8 is configured as a heater core through which the cooling water flows, and the flow rate of the engine cooling water passing through the heating heat exchanger 14 is controlled by an open / close control valve (not shown) controlled in association with the air mix damper 13. ).

An air mix damper 13 is disposed upstream of the heating heat exchanger 14, and the open / close position of the air mix damper 13 is determined by a heating position at which the entire air flow is passed through the heating heat exchanger 14, a heating position, It is variably set to a desired position between the cooling position where the entire amount of air is blown by bypassing the exchanger 14. When the air mix damper 13 is located at the heating position, the entire air volume is passed through the heating heat exchanger 14, so that the highest blowing temperature is obtained. When the air mix damper 13 is located at the cooling position, the total air volume is reduced. Since only the cooling heat exchanger 12 is passed, the lowest blowing temperature is obtained and the air mix damper 1
When 3 is located at an intermediate position between the heating position and the cooling position, the air heated by the heating heat exchanger 14 bypasses the heat exchanger 14 due to the ventilation ratio of each heat exchanger 12, 14. The mixing ratio with the air to be blown is adjusted, and the blowing temperature is controlled to a desired temperature.

The air conditioner is an electric motor 1 for driving the inside / outside air switching damper 4 as a driving device for various dampers.
9, an electric motor 20 for driving the mode switching dampers 8, 9, and 10, and a servomotor 21 for driving the air mix damper 13. The motor 19 serves as control means for these driving devices. , 20, 21 and a control device 22 for controlling the amount of air blown by the blower 11, and an operation panel 2 for manually setting air-conditioning conditions.
3 is provided. Operation panel 23, an occupant can operate various switches, for example, automatic switch 23a for selecting an automatic control or manual control of the air conditioning, the vehicle interior temperature for manually setting the passenger compartment temperature T _SET desired setting switch 23b, an inside / outside air changeover switch 23c for manually setting the introduction ratio of the inside and outside air, a blowout mode changeover switch 23d for selecting a blowout mode, and
A defroster switch 23e for manually setting the opening of the defroster outlet is provided.

A seat warmer 50 and a floor mat 60 are connected to the control device 22 of the air conditioner. The seat warmer 50 is embedded in the seat 51,
Extending along the seat cushion and the seat back. The seat warmer 50 includes an electric heating element applied by the control device 22, and heats the surface of the seat 51 in contact with the occupant by the heat generated by the heating element. To give the occupants a touch immediately after boarding.

The floor mat 60 is laid on the floor surface and is located at the feet of the occupant. The floor mat 60 is connected to the control device 2
2, the upper surface of the floor mat 60 which is in contact with the occupant's legs is heated by the heat generated by the heating element, so that the occupant immediately after boarding is extremely cold when starting in winter. Prevents the feeling of indoor floor feeling. FIG.
1 is a schematic configuration diagram showing the overall configuration of a control device 22.

The control device 22 of the present embodiment is connected to a stabilized power supply 32 and outputs a display data to the operation panel 23 by a microprocessor (hereinafter referred to as a CPU) 30 and a RAM and a ROM for storing predetermined data (FIG. (Not shown). The control device 22 controls the motor 19 and the driver 19 via drivers 35 to 37 based on an output signal from the CPU 30.
In addition to driving the motors 20 and 21, the engagement or release of the electromagnetic clutch 31 provided between the compressor 15 and the engine 18 is controlled via a driver 38. Motor 1
The air conditioning mode of the air conditioner is switched by the control of 9 and 20, and the opening of the air mix damper 13, that is, the open / close position, is controlled by the control of the servomotor 21.

The control device 22 drives the blower motor 11a through the D / A converter 33 and the driver 34, and controls the applied voltage to the blower motor 11a to control the blower amount of the blower 11 substantially corresponding to the blown air amount Va. Control. The control device 22 further controls the operation of the seat warmer 50 and the floor mat 60. When heating the seat 51, the control device 22 applies a voltage to the heating element of the seat warmer 50 via the driver 39 to cause the heating element to generate heat, and when heating the floor mat 60, the driver 4
A voltage is applied to the heating element of the floor mat 60 via 0 to cause the heating element to generate heat.

Various sensors for detecting various air-conditioning conditions are connected to the control device 22. The sensors include a room temperature sensor 24 for detecting the temperature of the inside air drawn into the ventilation duct 1 as a vehicle interior temperature Tr, and an outside air temperature Ta. Temperature sensor 25 for detecting the temperature of sunlight, solar radiation sensor 26 for detecting the amount of solar radiation, duct sensor 2 for detecting the exit temperature Te of the cooling heat exchanger 12
7. a water temperature sensor 28 for detecting the temperature of the engine cooling water;
And a potentiometer 29 for detecting the opening of the air mix damper 13. The control device 22 further includes a sheet temperature sensor 52 for detecting the surface temperature T _SEAT of the sheet 51.
And a mat temperature sensor 62 that detects the surface temperature T _MAT of the floor mat 60 is connected.

The control device 22 configured as described above can automatically control the operation of the air conditioner throughout the summer, winter, and intermediate periods. The automatic control of the heating operation performed by the control device 22 includes a so-called warm-up control that is transiently performed during the warm-up operation immediately after the engine is started.
Hereinafter, the warm-up control will be described. The warm-up control, based on the comfort index F ₅ occupant is indicative of felt comfort, airflow volume, the air temperature and the air outlet mode is controlled.

The comfort index F ₅ is defined by the following equation. _{F 5 = -K 1 · Va +} K 2 · T o + K 3 · T r + K 4 ·
Ta + C ₁ here, Va: airflow volume To: outlet air temperature Tr: vehicle interior temperature Ta: C ₁ is a constant in the ambient temperature above equation, K ₁ ~K ₄ is a weighting coefficient, these constants C ₁ and the coefficient K ₁ ＫK ₄ is a value determined by experiment. Comfort Index F ₅ is an index obtained by indexing the comfort felt by the passenger in the heating operation during the warm-up operation, the constants C ₁ and the coefficient K ₁ ~K ₄ are occupant most The calculation of the above equation is set so as to result in F ₅ = numerical value “5” under the air-conditioning conditions for experiencing a comfortable atmosphere. Therefore, as the calculation result F ₅ of the above equation is numerically increasing or decreasing from the "5", the occupant strongly discomfort felt. For example, assuming that the blow-out temperature T ₀ is constant, if the blow-out air amount Va increases, the calculation result F ₅ of the above equation decreases, and finally falls significantly below the numerical value “5” (for example, “2”). It is assumed that an atmosphere in which the occupant feels the cold due to the airflow is formed in the passenger compartment.

FIGS. 3 to 6 are flowcharts showing the warm-up control executed by the control device 22. FIG. In each of the drawings, the step numbers are indicated by reference symbols “S”. First, the control device 22 determines whether or not the warm-up control has been executed for the first time (FIG. 3, S
1). In the first routine, a heat mode in which 75% of the total air volume Va is blown out of the foot air outlet 6 and 25% of the total air volume Va is blown out of the defroster air outlet 7 is assumed, and the foot mode is set based on the preset minimum air volume VaL. The amount of air blown out of the outlet 6 is calculated by the equation 0.75 × VaL, and the blowout temperature To is set to the engine coolant temperature Tw (S2,
3).

The blown air volume Va thus obtained (= 0.75)
× VaL) and the outlet temperature To, based on the comfort index F
₅ is calculated (S4), if the value of the comfort index F ₅ is smaller than "3", the coolant temperature Tw is assumed to quite a low temperature, the flag "00" is set (S6), Comfort Index If the value of F ₅ is smaller than "3" or more and "4", the coolant temperature Tw is assumed that it is a moderate temperature, the flag "01" is set (S8), comfort value of the exponent F ₅ Is greater than or equal to "4", it is determined that the cooling water temperature Tw is relatively high, and the flag "10" is set (S
9).

The routine shown in FIG.
a and the blowing temperature T _O , and the blowing air volume Va is set to the minimum air volume VaL (S1).
0), the outlet temperature To is set to the engine coolant temperature Tw (S12). The controller 22 gradually increases the minimum air volume VaL to the maximum air volume VaH for each predetermined additional air volume ΔVa (S17), and, based on each air volume Va set at each stage, changes the air volume Va to the foot air outlet 6. (Step S1).
3), thus based on the airflow volume of the foot air outlet 6 which is calculated (0.75 × Va), and the comfort index F ₅ in the warm-up operation, respectively calculating the comfort index F ₄ (S14 , 15).

The comfort index F ₄ is an index indicating comfort during steady operation after completion of the warm-up operation, and is defined by the following equation. _{F 4 = K 5 · Va -K} 6 · T O + K 7 · T r + K 8 · T
a + C ₂ Here, Va: airflow volume T _O: outlet air temperature T _r: vehicle interior temperature Ta: outside air temperature also, C ₂ is a constant in the above formula, K ₅ ~K ₈ denote weighting coefficients, these constants C ₂ and the coefficient K ₅ ~K ₈ is a value determined by experimentation. Comfort Index F ₅ is an index obtained by indexing the comfort felt by the passenger in the heating operation after the warm-up operation completion, the constant C
₂ and the coefficient K ₅ ~K ₈ may occupant most pleasant atmosphere under felt conditioning conditions, the calculation of the above equation is F ₄ = value "5"
Is set to result in Therefore, as the calculation result F ₄ of the above equation increases or decreases from the numerical value “5”,
It is assumed that the occupant strongly experiences discomfort.

Further, in this routine, the absolute value of the deviation between comfort index F ₅ with a predetermined value alpha _o during the warm-up operation is calculated (S16). Here, α _o is set to “2” as an initial value. Such a series of iterations, the engine coolant temperature T _w the outlet temperature T _o after having assumed a minimum air volume maximum air volume from VaL Va _H each airflow volume is increased stepwise up to Va (= 0.75 × Va) And the absolute value of (comfort index F ₅ -α _o ) corresponding to each blown air volume Va are obtained, and the outlet temperature at which the absolute value of (comfort index F ₅ -α _o ) can be calculated to the minimum value T _o and the outlet air volume Va, is selected as the target blowing air volume "Vao" and the target air temperature "Too" (S18).

FIG. 5 is a flowchart showing a routine for determining a blow-out mode and the like under warm-up control. If the flag is “00”, that is, the cooling water temperature T
If w is quite low and the blown air amount Vao is smaller than the predetermined air amount VaML (S19, S20), the air conditioning conditions are set to the blown air amount Vao, the blowout temperature Too, and the differential mode, and these air conditioning conditions are achieved. In order to blow
And the open / close positions of the air mix damper 13 and the mode switching dampers 8, 9, and 10 are adjusted (S2).
1). The air volume VaML is set to a so-called “middle low” (middle low) air volume in the manual operation of the air conditioner, and the differential mode is a blowing mode in which the entire air volume is blown out from the defroster outlet 7. .

Generally, as the warm-up operation progresses,
Gin cooling water temperature T_wOr vehicle interior temperature T _rRise and comfort
Index F_FiveValue and the selected target air flow rate Vao gradually increase
Increase. The blow mode is the comfort index F_FiveValue and target
The comfort index F is increased by increasing the blowing air volume Vao._FiveExceeds 3
Changed from the differential mode to the differential / heat mode
The comfort index F_FiveExceeds 4 and the target blowing air volume Vao is
The predetermined air volume VaMH, that is, the so-called “medium size” (of the air conditioner)
The so-called “middle size” in manual driving (middle high)
Temperature), the differential / heat mode
Is changed to the heat mode (S25 to S33). Ma
The predetermined value α_oThe value of
Therefore, the number is gradually increased to “3” and “4”. Such a stage
For details on floor-like blowing modes and changes in air conditioning conditions, see
It is explained in detail in the specification of Japanese Patent Application No. 4-115417 by the applicant.
Since it has been clarified, further detailed description is omitted.

With the warm-up operation, the engine cooling water temperature T _w
Or cabin temperature T _r is increased, when the value of the comfort index F ₅ exceeds the comfort index F ₄ "0.5" or more (S22), the controller 22 terminates the warm-up control (S23) ,
The value of the flag is reset to the initial value (S24), and the operation of the spot heater 50 is stopped (S51). FIG.
FIG. 8 is a flowchart showing a warm-up control routine when the flag is set to “01” or “10” (S8, S9).

[0033] As described above, when the fairly high engine coolant temperature T _w at the start of the warm-up control, the comfort index F ₅ already approximated to 5 (S9), the flag is set to "10" Then, the heat mode is set, and the automatic air-conditioning control based on the target blowing air volume Vao and the target blowing temperature Too is executed (S41). Also it is assumed that the engine coolant temperature T _w at the start of the warm-up control is the temperature of the medium, if the flag "01" is set (S8), according to the target airflow volume Vao, defroster / heat mode And the heat mode is set step by step,
Automatic heating control is performed based on the target air volume Vao and the target air temperature Too, or the predetermined air volume VaMH and the air temperature ToMH (S35 to S40).

The stepwise change of the blowing mode and the air-conditioning conditions shown in FIG.
Since it is described in detail in the specification of No. 17, further detailed description is omitted. FIG. 7 is a flowchart showing a control routine of the seat warmer 50 executed by the control device 22 simultaneously with the warm-up control.

When the surface temperature T _SEAT of the seat 51 detected by the seat temperature sensor 52 is equal to or lower than a predetermined temperature α ₁ , for example, a temperature 37 ° C. corresponding to the body temperature, the control device 22 generates heat of the seat warmer 50. A voltage is applied to the body to operate the seat warmer 50 (S51, S5
2). The control device 22 further calculates a comfort index F _SEAT as an index of comfort that the occupant feels by operating the seat warmer 50 (S53).

The comfort index F _SEAT is obtained by converting the comfort received by the occupant from the seat warmer 50 during the warm-up control into an index according to the following equation. _{F SEAT = K 11 · Va +} K 12 · T O + K 13 · T r + K 14 ·
T _S + K ₁₅ · T _SEAT + C ₃ where Va: blown air volume T _O : blow temperature T _r : vehicle interior temperature T _S : temperature conversion value of solar radiation T _SEAT : surface temperature of seat 51 C ₃ in the above equation is constant, K ₁₁ ~K ₁₅ are weighting coefficients, these constants C ₃ and the coefficient K ₁₁ ~K ₁₅ is a value determined by experimentation. The constants C ₃ and the coefficient K ₁₁ ~K
₁₅ is set so that when the occupant feels the most comfortable feeling from the seat 51, the calculation of the above expression results in F _SEAT = numerical value "5".

The influence of the amount of solar radiation may be neglected. In this case, the coefficient K ₁₄ is set to zero, or the term K ₁₄ · T _S is deleted from the above equation. Also, as is clear from the above calculation formula, unlike the comfort indices F ₄ and F ₅ , factors that are not directly related to heating by the seat warmer 50,
For example, the outside air temperature Ta is excluded from the above equation. The control device 22 calculates the comfort index F _SEAT calculated by the above equation.
Until the predetermined value 5 is reached, the operation of the seat warmer 50 is held (S54).

As a result of the vehicle interior temperature _Tr increasing due to the heating operation of the air conditioner under the warm-up control, or the surface temperature T _SEAT of the seat 51 increasing due to the operation of the seat warmer 50, the above-mentioned comfort index F _SEAT is reduced. When it increases, the comfort index F _SEAT reaches a predetermined value 5, and finally exceeds the predetermined value 5. At this time, the control device 22 controls the seat warmer 5
In order to stop the operation of the seat warmer 50, the application of the voltage to the heating element of the seat warmer 50 is released, and the operation of the seat warmer 50 is stopped (S54, S55).

FIG. 8 is a flowchart showing a control routine of the floor mat 60 executed by the control device 22 simultaneously with the warm-up control. The control device 22 controls the floor mat 60 detected by the mat temperature sensor 62.
When the surface temperature T _MAT is equal to or lower than a predetermined temperature α ₂ , for example, a temperature of 37 ° C. corresponding to body temperature, the floor mat 60
A voltage is applied to the heating element of (1) to operate the floor mat 60 (S61, S62). The control device 22 further calculates a comfort index F _MAT as an index of comfort that the occupant feels by operating the floor mat 60 (S63).

The comfort index F _MAT is obtained by converting the comfort received by the occupant from the floor mat 60 during the warm-up control into an index according to the following equation. F _MAT = K ₁₆ · Va + K ₁₇ · T _O + K ₁₈ · T _r + K ₁₉ ·
T _S + K ₂₀ · T _MAT + C ₄ where Va: blown air volume T _O : blow temperature T _r : vehicle interior temperature T _S : temperature conversion value of solar radiation T _MAT : surface temperature of floor mat 60 C ₄ in the above equation Is a constant, K _{16 to} K ₂₀ are weighting coefficients, and these constant C ₃ and coefficients K _{16 to} K ₂₀ are values determined by experiments. The constants C ₄ and the coefficient K ₁₆ ~K
₂₀ is set so that when the occupant feels the most comfortable feeling from the floor mat 60, the calculation of the above expression results in F _MAT = numerical value “5”.

The controller 22 further holds the operation of the floor mat 60 until the comfort index F _MAT calculated by the above equation reaches the predetermined value 5 (S64). When the interior temperature _Tr increases due to the heating operation of the air conditioner under the warm-up control, or the surface temperature T _MAT increases due to the operation of the floor mat 60, the comfort index F _MAT increases. F _MAT reaches the predetermined value 5, and finally exceeds the predetermined value 5. At this time, the control device 22 controls the floor mat 60 to stop the operation of the floor mat 60.
The application of the voltage to the heating element of the
0 is stopped (S64, S65).

As described above, the vehicle heating device of the present embodiment includes the air conditioner, the seat warmer 50 and the floor mat 60,
And a control device 22 for controlling the operation or operation of these devices or interior components.
0 and the floor mat 60 have the surface temperatures T _SEAT and T _MAT equal to or less than the predetermined values α ₁ and α ₂ , respectively.
0 and the floor mat 60 are operated respectively. Control device 2
2 Furthermore, the air conditioning conditions such as airflow volume Va, outlet air temperature T _O and vehicle interior temperature T _r, the surface temperature T _SEAT, T based on the _{MA T,} comfort index occupant to instruct the comfort felt by F
_SEAT and F _MAT are calculated, and when the comfort index F _SEAT and F _MAT exceed a predetermined value 5, the operation of the seat warmer 50 and the floor mat 60 is stopped, respectively.

Thus, according to the vehicle heating system of the present embodiment, the seat warmer 50 and the floor mat 60 are automatically operated, and the operation of these interior components 50 and 60 is related to the air conditioning conditions of the air conditioner. In addition, the vehicle can be stopped based on the comfort index indicating the comfort of the occupant. Thus,
The operation of the interior components 50 and 60 can be automatically controlled while accurately grasping the comfort of the occupant and securing desired comfort.

In the above embodiment, the interior parts 50, 60
Start of operation of the interior parts 50, 60 surface temperature T_SEAT, T
_MATIs determined based on the above-mentioned comfort index
F_SEAT, F _MATBased on the operation of the interior parts 50, 60
You may decide to start.

[0045]

As described above, according to the vehicle heating apparatus of the present invention, the operation of the interior components having the heating element is stopped based on the comfort index indicating the comfort of the occupant. It is possible to automatically control the operation of the interior component having the heating element while ensuring the comfort of the user.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram showing an example of a vehicle air conditioner, a seat warmer, and a floor mat to which a vehicle heating device of the present invention is applied.

FIG. 2 is a schematic overall configuration diagram of a control device of the air conditioner shown in FIG.

FIG. 3 is a flowchart partially showing warm-up control by the control device of the air conditioner.

FIG. 4 is a flowchart partially showing warm-up control by the control device of the air conditioner.

FIG. 5 is a flowchart partially showing warm-up control by the control device of the air conditioner.

FIG. 6 is a flowchart partially showing warm-up control by the control device of the air conditioner.

FIG. 7 is a flowchart illustrating a seat warmer control routine executed simultaneously with the warm-up control by the control device of the air conditioner.

FIG. 8 is a flowchart showing a floor mat control routine executed simultaneously with the warm-up control by the control device of the air conditioner.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 ventilation duct 6 foot outlet 7 defroster outlet 11 blower 12 cooling heat exchanger 13 air mix damper 14 heating heat exchanger 22 controller 24 room temperature sensor 26 solar radiation sensor 50 seat warmer 52 sheet temperature sensor 60 floor mat 62 mat Temperature sensor Va Blowing air volume T _O Blowing temperature T _r Temperature of vehicle interior T _S Temperature conversion value of solar radiation T _SEAT sheet surface temperature T _MAT floor mat surface temperature K Weighting coefficient C constant F ₄ , F ₅ , F _SEAT , F _MAT comfort index

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yasuhiro Tono 3-1 Shinchi, Fuchu-cho, Aki-gun, Hiroshima Prefecture Inside Mazda Corporation (72) Inventor Takashi Tsuchida 3-1 Shinchi, Fuchu-cho, Aki-gun, Hiroshima Mazda Co., Ltd. (72) Inventor Toshikazu Ishikawa 3-1, Shinchi, Fuchu-cho, Aki-gun, Hiroshima Prefecture Naldec Co., Ltd. (56) References JP-A 1-2229713 (JP, A) JP 1-2229712 (JP) , A) JP-A-2-121410 (JP, U) JP-A-4-39105 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B60H 1/03 B60H 1/00 102 B60H 1/22 611

Claims (1)

(57) [Claims] 1. An air conditioner for heating air in a vehicle cabin by controlling at least an air blowing temperature and a blowing amount by using air as a medium, and a heating element, which does not use air as a medium, and is used for a human body or clothes. A heating device for a vehicle having an interior component for heating an occupant by direct heat transfer, comprising: a control device for operating the interior component by causing the heating element to generate heat, wherein the control device includes: Comfort index calculating means for calculating the comfort felt by the occupant during operation of the product as a comfort index based on at least the air blowing temperature and the blowing volume of the air conditioner, the temperature in the vehicle interior, and the temperature of the interior components. And an interior component operation control means for restricting heat generation of the heating element and stopping the operation of the interior component when the comfort index exceeds a predetermined value.