JP6350118B2 - Heater air conditioning system - Google Patents

Description

  The present invention relates to a heater air conditioning system that operates in association with a radiant heater device that provides radiant heat and an air conditioner that provides conditioned air.

  Patent document 1 is disclosing one form of the heater air-conditioning system which carries out cooperation control of a radiation heater apparatus and an air-conditioner. The system described in Patent Document 1 is configured so that the mutual ratio between the foot blowing heat amount (foot blowing heat amount) and the input power of the radiant heat heating device has the same temperature sensation in the occupant's feet. I have control. As an example of control for energy saving, it is disclosed that when the engine water temperature is equal to or higher than a predetermined temperature, the amount of foot air is increased and the input power of the radiant heat heater is decreased. Further, it is disclosed that when the engine water temperature is lower than a predetermined temperature, the amount of foot air is decreased and the input power of the radiant heat heater is increased.

JP 2012-192829 A

  In the above-mentioned conventional system, in the blowing mode in which the conditioned air is blown from the defroster outlet, if the amount of air blown by the air conditioner is simply reduced, the amount of blown air from the defroster outlet is reduced, thereby preventing window fogging. There is a problem that performance cannot be secured. On the other hand, if the ventilation opening degree of the foot outlet is reduced in order to reduce the foot volume, there is a concern that noise and vibration performance (NV performance) deteriorate due to increase in ventilation resistance in the air conditioner.

  Therefore, the system of Patent Document 1 is required to be further improved in order to give an appropriate feeling of heating to the occupant while ensuring energy saving and to ensure the window fogging prevention performance.

  The present invention has been made in view of the above-described problems, and aims to provide a heater air-conditioning system that can save energy for an air-conditioning apparatus while ensuring a passenger's feeling of heating, and can further ensure window fogging prevention performance. And

  The present invention employs the following technical means to achieve the above object. It should be noted that the reference numerals in parentheses described in the claims and in this section indicate the correspondence with the specific means described in the embodiments described later as one aspect, and the technical scope of the present invention It is not limited.

One of the inventions related to the disclosed heater air-conditioning system is a radiant heater device (2) that performs a heater heating operation that includes a heat generating portion that generates heat when energized and radiates radiant heat into the vehicle interior (10) by heat supplied from the heat generating portion. ), An air conditioner (3) that blows temperature-conditioned air to the passenger compartment, and a controller (4, 5) that controls the heater heating operation by the radiation heater device and the air conditioning operation by the air conditioner in association with each other And comprising
Controller, the foot outlet passages conditioned air is blown toward the defroster outlet passages to the windows of the vehicle is set blowing mode Ru blown into the passenger compartment, and in the case of performing the heater heating operation, the heater heating operation Control is performed such that the amount of air blown by the indoor blower of the air conditioner is reduced and the ventilation opening degree of the defroster outlet passage is increased and the ventilation opening degree of the foot outlet passage is reduced as compared with the non-implementation time.

  According to this disclosed invention, when window fogging prevention and heating are required, the ventilation resistance in the air conditioner is increased by increasing the ventilation opening degree of the defroster outlet passage even if the air volume of the air conditioner is reduced. Can be prevented, and the amount of air blown to the window can be secured. In other words, it is possible to perform control that leads to a decrease in pressure loss in the air conditioner and to ensure the anti-fogging performance of the window. Furthermore, since the heating output can be complemented by heating the occupant by the heater heating operation by the radiant heater device, the amount of air blown into the passenger compartment can be reduced, and heating by air conditioning can be suppressed. Therefore, according to the disclosed invention, it is possible to provide a heater air-conditioning system that can save energy of the air-conditioning apparatus while ensuring a passenger's feeling of heating, and can further ensure window fogging prevention performance.

It is a figure showing the positional relationship of the heater air-conditioning system which concerns on 1st Embodiment of this invention, and a passenger | crew. It is a block diagram regarding control of the heater air-conditioning system concerning a 1st embodiment. It is a flowchart regarding cooperation control with a radiation heater device and an air-conditioner concerning a 1st embodiment. It is an example of the control map used in order to determine a target blower level by step 40 in the flowchart of FIG. It is an example of the control map used in order to determine the target opening degree of a defroster door by step 60 in the flowchart of FIG. It is a flowchart regarding cooperation control with a radiation heater device and an air-conditioner concerning a 2nd embodiment. It is an example of the control map used in order to determine the target opening degree of a foot door by step 100 in the flowchart of FIG. It is a flowchart regarding cooperation control with a radiation heater device and an air-conditioner concerning a 3rd embodiment.

  A plurality of modes for carrying out the present invention will be described below with reference to the drawings. In each embodiment, parts corresponding to the matters described in the preceding embodiment may be denoted by the same reference numerals, and redundant description may be omitted. When only a part of the configuration is described in each mode, the other modes described above can be applied to the other parts of the configuration. In addition to combinations of parts that clearly indicate that each embodiment can be combined specifically, the embodiments may be partially combined even if they are not clearly specified, unless there is a problem with the combination. Is possible.

(First embodiment)
The heater air-conditioning system 1 according to the disclosed invention controls the radiation heater device 2 and the air-conditioning device 3 that blows the temperature-conditioned air to the vehicle interior 10 in association with each other. The heater air conditioning system 1 is, for example, a device that provides heating to the vehicle interior 10. The radiant heater device 2 applicable to the heater air-conditioning system 1 is, for example, a vehicle device mounted on an interior member of the vehicle interior 10, and is a heating device having a heater body that supplies radiant heat. A heater air-conditioning system 1 according to the first embodiment will be described with reference to FIGS.

  The radiation heater device 2 constitutes one of the heating devices for the vehicle interior 10. The radiation heater device 2 has a plate-shaped heater body. The radiation heater device 2 generates heat when electric power is supplied. The radiant heater device 2 radiates radiant heat mainly in a direction perpendicular to the surface in order to warm an object positioned in a direction perpendicular to the surface. The radiant heater device 2 has a heat generating part and supplies radiant heat to the outside by heat released from the heat generating part. Therefore, the radiant heater device 2 can provide the radiant heat transmitted from the high-temperature solid surface to the low-temperature solid surface regardless of the presence of air or the like therebetween. Hereinafter, the radiation heater device 2 may be simply referred to as the device 2.

  A seat 12 for seating an occupant 15 is installed in the vehicle interior 10. The device 2 is installed in the vehicle interior 10 so as to radiate radiant heat to the feet of the occupant 15. The device 2 is installed on the wall surface of the vehicle interior 10. The wall surface of the vehicle interior 10 is an interior part such as an instrument panel, a door trim, or a ceiling, for example. The device 2 is installed so as to face the occupant 15 in the assumed normal posture. For example, the road traveling vehicle has a steering column 13 for supporting the handle 14. The device 2 can be installed on the lower surface of the steering column 13 so as to face the occupant 15.

  The device 2 is formed in a substantially rectangular thin plate shape. The apparatus 2 includes a substrate portion that constitutes a heater body, a plurality of heat generating portions, and a pair of terminals that are conductive portions. The apparatus 2 can also be called a planar heater that emits radiant heat mainly in a direction perpendicular to the surface.

  The substrate portion is made of a resin material that provides excellent electrical insulation and withstands high temperatures. The substrate unit is a multilayer substrate. The substrate unit has a front surface layer, a back surface layer, and an intermediate layer. The surface layer faces the direction of radiation heat radiation. In other words, the surface layer is a surface that is disposed to face a part of the occupant 15 that is the heating object in the installed state of the device 2. The back surface layer forms the back surface of the device 2. The intermediate layer supports the heat generating portion and the terminal. The substrate portion is a member for supporting a plurality of heating portions each having a linear shape. The front surface layer, the back surface layer, and the intermediate layer are insulating portions made of a material having lower heat conductivity than the heat generating portion and the terminal. For example, the surface layer, the back layer, and the intermediate layer are made of polyimide resin.

  Each of the plurality of heat generating portions is made of a material that generates heat when energized. The heat generating part can be made of a metal material. For example, the heat generating part can be made of copper, silver, tin, stainless steel, nickel, nichrome, or the like. Each of the plurality of heat generating portions has a linear shape or a plate shape parallel to the surface of the substrate portion, and is dispersedly arranged with respect to the surface of the substrate portion.

  Each heat generating part is connected to a pair of terminals arranged at a predetermined interval. The heat generating portion is disposed with a gap between the pair of terminals. The plurality of heat generating portions are connected in parallel to the pair of terminals so as to bridge between the pair of terminals, and are provided over substantially the entire surface of the substrate portion. The plurality of heat generating portions are provided so as to be sandwiched between the front surface layer and the back surface layer together with the intermediate layer. The plurality of heat generating portions are protected from the outside by the substrate portion.

  Each heat generating portion is a member that is thermally connected to at least the surface layer and generates heat when energized. Thereby, the heat generated by the heat generating part is transmitted to the surface layer. The heat generated by one heat generating portion is radiated from the surface layer to the outside as radiant heat via a member such as a substrate portion, and is provided to the opposing occupant 15.

  The heat generating portion is set to have a predetermined length in order to obtain a predetermined heat generation amount. Therefore, each heat generating part is set to have a predetermined resistance value. In addition, the dimensions and shape of each heat generating part are set so that the thermal resistance in the lateral direction (length direction) becomes a predetermined value. Accordingly, the plurality of heat generating portions generate a predetermined amount of heat when a predetermined voltage is applied. The plurality of heat generating portions generate a predetermined amount of heat and rise to a predetermined temperature. The plurality of heat generating portions that have risen to a predetermined temperature heat the surface layer to a predetermined radiation temperature. And the apparatus 2 can radiate the radiant heat which makes the passenger | crew 15, ie, a person's lower body, feel warmth.

  Below, with reference to FIG. 2, the structure regarding control of the heater air conditioning system 1 is demonstrated. The output, temperature, and heat generation amount of the heat generating unit are controlled by the heater ECU 4. The heater ECU 4 is a control device that controls the operation of the device 2. The heater ECU 4 can control the output, temperature, amount of heat generation, and the like of the heat generating part by controlling the voltage value and the current value applied to the heat generating part. Therefore, the heater ECU 4 varies the amount of radiant heat given to the occupant 15. When energization of the device 2 is started by the heater ECU 4, the surface temperature of the device 2 rapidly rises to a predetermined radiation temperature to be controlled. For this reason, warmth can be given to the passenger | crew 15 rapidly also in winter.

  When an object comes into contact with the surface layer of the apparatus 2, the heat transferred from the heat generating portion to the surface layer is rapidly transferred to the contacting object. As a result, the temperature of the contacting portion of the surface layer rapidly decreases. Therefore, the surface temperature of the device 2 in the part in contact with the object is rapidly lowered. The heat of the part in contact with the object is transmitted to the object in contact and diffuses to the object in contact. For this reason, an excessive increase in the surface temperature of the contacting object is suppressed.

  A signal from the heater operation unit 40 that can be operated by the passenger is input to the heater ECU 4. By operating the heater operation unit 40, the heater ECU 4 outputs a command signal for energizing from a state where the heat generating unit is not energized and a command signal for stopping energization from the state where the heat generating unit is energized. Can be sent to. When the heater operation unit 40 is operated and a command signal for energization is input to the heater ECU 4 from a state where the heat generation unit is not energized, the heater ECU 4 controls the automatic heater heating operation by the device 2. The heater operation unit 40 is an automatic operation setting unit that can set an energization permission state that permits automatic heater heating operation and an energization prohibition state that prohibits heater heating operation. The heater operation unit 40 is, for example, a switch on an operation panel that is integrally installed on an instrument panel or the like.

  The heater ECU 4 is configured to perform calculation processing and control processing by being supplied with DC power from a battery 100 that is an in-vehicle power source mounted on the vehicle, regardless of whether the ignition switch that controls starting and stopping of the engine is on or off. Has been. The heater ECU 4 can supply electric power obtained from the battery 100 to the device 2 and control the supplied electric power. The heater ECU 4 can control the output of the heat generating part by controlling the supplied power. The heater ECU 4 individually controls the duty of the DC power obtained from the battery 100 by, for example, an inverter unit, and supplies it to the heat generating unit of the device 2. Therefore, the heater ECU 4 can adjust the surface temperature of the substrate portion of the device 2 by duty control of DC power.

  The battery 100 may be composed of, for example, an assembled battery made up of an assembly of a plurality of single cells. Each unit cell can be composed of, for example, a nickel-hydrogen secondary battery, a lithium ion secondary battery, or an organic radical battery. The battery 100 is chargeable / dischargeable, for example, and can be used for the purpose of supplying electric power to a vehicle driving motor or the like.

  The heater ECU 4 includes a microcomputer that includes functions such as a CPU (central processing unit) that performs arithmetic processing and control processing, a memory such as a ROM and a RAM, and an I / O port (input / output circuit). Yes. The temperature sensor 20 is connected to the heater ECU 4 and a signal line that is connected to the heater ECU 4 and communicates the electric signal detected by the temperature detection unit to the heater ECU 4. And comprising. A signal from the temperature sensor 20 is A / D converted by, for example, an I / O port or an A / D conversion circuit, and then input to the microcomputer. The heater ECU 4 performs DC power duty control and also performs feedback control so that the temperature of the heater body detected by the temperature sensor 20 approaches the target heater temperature, thereby controlling the operation of the apparatus 2 and the heater output. Control.

  Memory such as ROM and RAM constitutes a storage means of the heater ECU 4. The storage means stores in advance predetermined control characteristic data as a basis for the predetermined arithmetic program and control characteristic graph. The control characteristic data is used for output control of the heat generating portion by the heater ECU 4. In addition, the heater ECU 4 performs a heater heating operation of the radiation heater device 2 associated with the air conditioning operation by the air conditioning ECU 5 by communicating with the air conditioning ECU 5.

  A signal from the air conditioning operation unit 50 that can be operated by the passenger is input to the air conditioning ECU 5. The occupant can operate the air conditioning operation unit 50 to transmit a command signal for performing the air conditioning operation and a command signal for stopping the air conditioning operation to the air conditioning ECU 5. Further, the passenger can set the temperature (set temperature) in the passenger compartment by operating the air conditioning operation unit 50. When the air conditioning operation unit 50 is operated and a command signal for performing an automatic air conditioning operation is input to the air conditioning ECU 5, the air conditioning ECU 5 controls the automatic air conditioning operation by the air conditioner 3. The air conditioning operation unit 50 is an automatic operation setting unit that can set a permission state for permitting automatic air conditioning operation and a prohibition state for prohibiting air conditioning operation. The air conditioning operation unit 50 is a switch on the operation panel that is integrally installed on the instrument panel or the like, similarly to the heater operation unit 40.

  The air conditioning ECU 5 can supply power obtained from the battery 100 to the air conditioner 3 and control the supplied power. The air conditioning ECU 5 can control the output related to the air conditioning functional component of the air conditioner 3 by controlling the supplied power.

  The heater ECU 4 and the air conditioning ECU 5 are configured to be communicable and exchange predetermined operation information and control commands regarding the device 2 and the air conditioning device 3. Both communication forms may be wired or wireless. The air conditioning ECU 5 is an air conditioning control device that includes a microcomputer such as a CPU, a ROM, and a RAM, and peripheral circuits thereof, and is supplied with a DC power from the battery 100 to control air conditioning in the vehicle interior. The air conditioning ECU 5 includes detection signals of sensor groups for air conditioning control, such as an inside air sensor 30, an outside air sensor 31, a solar radiation sensor 32, a discharge temperature sensor 33, a discharge pressure sensor 34, an evaporator temperature sensor 35, and a cooling water temperature sensor 36. , And a set temperature signal are input.

  The inside air sensor 30 detects a vehicle interior temperature Tr. The outside air sensor 31 detects the outside air temperature Tam. The solar radiation sensor 32 detects the solar radiation amount Ts in the vehicle interior 10. The discharge temperature sensor 33 detects the discharge refrigerant temperature Td of the compressor in the air-conditioning refrigeration cycle. The discharge pressure sensor 34 detects the discharge refrigerant pressure Pd of the compressor. The evaporator temperature sensor 35 detects the temperature of the air blown from the evaporator (evaporator temperature) Te in the refrigeration cycle for air conditioning. The cooling water temperature sensor 36 detects the cooling water temperature Tw of the cooling water flowing out from the engine. The air conditioning ECU 5 includes a humidity sensor that detects the relative humidity of the air in the vehicle interior near the window glass in the vehicle interior, a temperature sensor near the window that detects the temperature of the air in the vehicle interior near the window, and a window that detects the window surface temperature. A signal from a surface temperature sensor or the like is input.

  The air conditioning ECU 5 performs various calculations and processes using these detection signals and the stored air conditioning control program, and actuators for each mode door, a motor drive circuit for a blower motor, a capacity control valve for a compressor, and a clutch drive for an electromagnetic clutch. A control signal is output to a circuit or the like. Memory such as ROM and RAM constitutes storage means of the heater ECU 4 and the air conditioning ECU 5. The storage means stores in advance predetermined control characteristic data that is a basis of a predetermined air conditioning control program and various control characteristic graphs. The control characteristic data is used for radiant heat control by the heater ECU 4 and air conditioning control in the vehicle interior by the air conditioning ECU 5. Thereby, the heater ECU 4 controls the heater heating operation by the apparatus 2, and the air conditioning ECU 5 controls the operation of various air conditioning functional components that contribute to the vehicle interior air conditioning.

  The air conditioning ECU 5 performs an air conditioning operation associated with the operation of the device 2 by the heater ECU 4. The air-conditioning functional parts include a compressor for an air-conditioning refrigeration cycle, an indoor blower, an inside / outside air switching door, an air mix door, a blow-out mode switching door, and the like. The air conditioning ECU 5 is configured to be able to communicate with the vehicle ECU 110. Both communication forms may be wired or wireless, and the signal format is not limited. The vehicle ECU 110 acquires various types of information related to the vehicle such as the vehicle speed, the engine coolant temperature, whether or not a passenger is seated, and sends predetermined information to the air conditioning ECU 5. The air conditioning ECU 5 uses the information acquired from the vehicle ECU 110 to determine the operation of the air conditioning functional component in the air conditioning operation.

  Below, an outline | summary is demonstrated about the process sequence in the air-conditioning driving | operation which air-conditioning ECU5 implements. When the ignition switch is turned on and DC power is supplied to the air conditioning ECU 5, a control program stored in advance in the memory is executed (initialization step).

  First, the stored contents of the data processing memory built in the microcomputer of the air conditioning ECU 5 are initialized. Next, various data are read into the data processing memory. That is, the air conditioning ECU 5 receives a signal from the air conditioning operation unit 50 and sensor signals from the various sensors 30 to 36 (various data reading step).

  Then, by substituting the input data into the stored arithmetic expression, the target blowout temperature TAO is calculated, and the target evaporator post-temperature TEO is calculated from the target blowout temperature TAO and the outside air temperature Tam (target blowout temperature calculation step) ).

An example of an arithmetic expression used for calculating the target blowing temperature is shown below.
TAO = Kset × Tset−Kr × Tr−Kam × Tam−Ks × Ts + C (1)

  Here, Tset is the set temperature set by the air-conditioning operation unit 50, Tr is the inside air temperature detected by the inside air sensor 30, Tam is the outside air temperature detected by the outside air sensor 31, and Ts is the solar radiation sensor 32. The amount of solar radiation detected. Kset, Kr, Kam, and Ks are gains, and C is a correction constant for the whole.

  Next, the blower air volume, that is, the blower control voltage VA applied to the blower motor of the indoor blower is calculated based on the calculated target blowing temperature TAO (blower control voltage calculation step). The blower control voltage VA is obtained based on a characteristic map in which a blower control voltage VA suitable for the target blowing temperature TAO is stored in advance.

  Next, the calculated target blowing temperature TAO and the input data in the various data reading steps are substituted into the calculation formula stored in the memory to calculate the air mix opening SW (%) of the air mix door ( Air mix door opening calculation step).

  Next, based on the target blow temperature TAO obtained in the target blow temperature calculation step, an air flow suction mode to be taken into the vehicle interior 10 and an air flow blow mode to be blown into the vehicle compartment 10 are determined (suction, blow mode). Calculation step). At this time, the ventilation opening degree of each blowing passage corresponding to each blowing mode, for example, the passage opening degree by the mode door for each blowing, is a pre-stored characteristic that defines the relationship between the target blowing temperature TAO and the ventilation opening degree. Required based on map.

  Next, the control current of the compressor is calculated so that the target outlet temperature TAO obtained in the target outlet temperature calculating step matches the actual evaporator temperature Te detected by the evaporator temperature sensor 35 (compressor control). Current calculation step).

  The air conditioning ECU 5 outputs a control signal to the blower drive circuit so that the blower control voltage VA obtained in the blower control voltage calculation step is obtained, and the air mix opening SW determined in the air mix door opening calculation step. A control signal is output to the servo motor so that Further, the air conditioning ECU 5 outputs a control signal to the servo motor so that the respective modes determined in the calculation steps of the suction and blow-out modes are obtained, and the control current determined in the calculation step of the compressor control current is appropriate. On / off control is output to the clutch drive circuit. And it returns to the above-mentioned various data reading step, and repeats the process of each subsequent step. The air conditioning ECU 5 can bring the vehicle interior temperature closer to the set temperature Tset by repeating such a series of processes.

  In this way, the air conditioning ECU 5 performs an air intake mode, a blow-out mode, an air flow rate by the indoor blower, by calculation using a command by manual operation, a set temperature of automatic operation, and various information acquired from the various sensors 30 to 36, and the like. The air-conditioning temperature etc. to the vehicle interior 10 are controlled. The air conditioning ECU 5 sets the outside air mode, the inside air mode, or the inside / outside air introduction mode as the air intake mode. The air conditioning ECU 5 controls the position of the blowing door and sets each blowing mode. The blowing mode is set to a foot blowing mode, a face blowing mode, a bi-level mode, a defroster blowing mode, a foot defroster blowing mode, or the like. The foot mode here is a mode in which air is blown from the defroster outlet 21 to the vehicle interior 10 although the amount is small. Further, the defroster blowing mode, the foot defroster blowing mode, and the foot rear blowing mode are modes in which the amount of air blown from the front seat foot outlet 22 to the vehicle interior 10 is less than the foot blowing mode. The foot rear blowing mode is a blowing mode in which conditioned air can be blown out to the passenger in the rear seat.

  Next, linkage control that relates the heater heating operation of the apparatus 2 and the air conditioning operation of the air conditioner 3 will be described. FIG. 3 shows a flowchart disclosing the processing procedure of the linkage control. This flowchart is started in a state where the power is supplied to the air conditioning ECU 5 and the heater ECU 4, and is executed by any ECU when the air conditioning ECU 5 and the heater ECU 4 communicate information with each other. Therefore, each process of this flowchart is performed by the air conditioning ECU 5 and the heater ECU 4 in cooperation, or by an integrated control device that integrates the air conditioning ECU 5 and the heater ECU 4.

  When this flowchart is started, it is first determined in step 10 whether or not the indoor blower of the air conditioner 3 that blows air into the vehicle interior 10 is operating. If it is determined in step 10 that the indoor blower is stopped, this flowchart is terminated. If it is determined in step 10 that the indoor blower is in operation, it is determined in next step 20 whether or not the blowing mode of the air conditioner 3 is either the defroster blowing mode or the foot blowing mode. In the foot blowing mode, the conditioned air is blown from the defroster outlet 21 to the vehicle interior 10, and therefore, when the blowing mode is either the defroster blowing mode or the foot blowing mode, the air is blown toward the vehicle window. The window fogging prevention effect can be expected.

  If it is determined in step 20 that neither the defroster blowing mode nor the foot blowing mode is selected, this flowchart is terminated. If it is determined in step 20 that either the defroster blowing mode or the foot blowing mode is set, it is next determined in step 30 whether or not the heater body of the apparatus 2 is in operation. If the heater body is operated, radiant heat is radiated into the passenger compartment 10 and heating is provided to the passenger. Further, the operation of the heater main body determined in step 30 may be a heater heating operation that is automatically performed, or may be a manual heater heating operation that is started by a manual operation of an occupant.

  If it is determined in step 30 that the apparatus 2 is not operating, this flowchart is terminated. If it is determined in step 30 that the device 2 is operating and radiating radiant heat, the target blower level of the indoor blower is calculated in the next step 40. This target blower level is obtained using a characteristic map stored in advance that defines the relationship between the target blowout temperature TAO and the target blower level.

  For example, according to the characteristic map shown in FIG. 4, the target blower level is obtained from the target blowout temperature TAO calculated using the above formula (1), and the blower control voltage is determined based on the target blower level. FIG. 4 shows a characteristic map related to the target blower level and TAO at the time of normal air conditioning determined when the heater heating operation is not performed with a solid line, and the characteristic related to the target blower level and TAO determined when the heater heating operation is performed. The map is indicated by a two-dot chain line. As shown in FIG. 4, according to the characteristic map indicated by the two-dot chain line, it is understood that the target blower level value corresponding to TAO is determined to be smaller than the characteristic map indicated by the solid line.

  Therefore, the target blower level determined in step 40 is set to a value smaller than the target blower level corresponding to the blower control voltage VA during normal air conditioning described above. In other words, the target blower level is set to a smaller value than when the heater heating operation by the device 2 is not performed. Thereby, the ventilation volume by the indoor blower is set to a smaller value during the heater heating operation than when the heater heating operation is not performed.

  Next, in step 50, a process of applying the blower control voltage controlled to the target blower level determined in step 40 to the blower motor of the indoor blower is executed. By this processing, the air blow amount by the indoor blower during the heater heating operation is set to a value lower than that during normal air conditioning (when the heater heating operation is not performed).

  In the next step 60, a target opening degree of the defroster door which is one of the blowing mode switching doors corresponding to the ventilation opening degree of the defroster outlet passage is determined. The defroster outlet passage is a passage that leads to a defroster outlet 21 that opens into the vehicle interior 10. The target opening of the defroster door is obtained using a characteristic map stored in advance that defines the relationship between the target blowing temperature TAO and the target opening of the defroster door.

  For example, in accordance with the characteristic map shown in FIG. 5, the target opening (%) of the defroster door is obtained from the target blowout temperature TAO calculated using the above-described equation (1), and the servomotor is applied to the servomotor based on this target opening. The control signal to be output is determined. FIG. 5 shows a characteristic map related to the target opening degree and TAO determined when the heater heating operation is not performed by a solid line, and two characteristic maps related to the target opening degree and TAO determined when the heater heating operation is performed. Shown with a chain line. As shown in FIG. 5, according to the characteristic map indicated by the two-dot chain line, it is understood that the value of the target opening corresponding to TAO is determined to be larger than the characteristic map indicated by the solid line.

  Therefore, the target opening of the defroster door determined in step 60 is set to a value larger than the target opening corresponding to the normal air conditioning described above. In other words, the target opening of the defroster door is set to a larger value than when the heater heating operation by the device 2 is not performed.

  Next, in step 70, a process of applying the control signal controlled so as to be the target opening degree of the defroster door determined in step 60 to the servo motor that drives the defroster door is executed, and this flowchart is ended. By this processing, the ventilation opening degree of the defroster outlet passage during the heater heating operation is set to a larger value than during normal air conditioning (when the heater heating operation is not performed), and the ventilation resistance of the air conditioner 3 is reduced. Contribute.

  Next, the effect which the heater air-conditioning system 1 of 1st Embodiment brings is demonstrated. The heater air-conditioning system 1 includes a radiant heater device 2 that performs a heater heating operation that radiates radiant heat into the vehicle interior 10 by heat supplied from a heat generating unit, an air conditioner 3 that blows conditioned air into the vehicle interior 10, and a heater heating operation. And a control device for controlling the air conditioning operation in association with each other. When the blower mode blown out from the defroster blowout passage is set and the heater heating operation is performed, the control device reduces the amount of air blown by the air conditioner 3 and the defroster blowout compared to when the heater heating operation is not performed. It controls to increase the ventilation opening of the passage. The heater air-conditioning system 1 increases the ventilation opening degree of the defroster outlet passage even if the air volume of the air conditioner 3 is reduced in a situation where window fogging prevention and heating are necessary.

  According to this control, it is possible to prevent an increase in ventilation resistance in the air conditioner 3 and to secure an air blowing amount to the window. In other words, it is possible to perform control that leads to a decrease in pressure loss in the air conditioner and to ensure the anti-fogging performance of the window. Furthermore, since the heating output can be complemented by heating the passenger 15 by the heater heating operation by the radiant heater device 2, the amount of air blown into the vehicle interior 10 can be reduced, and the heating output by air conditioning is suppressed. be able to. Further, according to the control of the heater air-conditioning system 1, it is possible to reduce the amount of air blown by the air conditioner 3 while maintaining the comfort of the feet of the occupant 15 without deteriorating the anti-fogging performance of the window. From the above, according to the heater air-conditioning system 1, it is possible to provide a system that can save energy of the air-conditioning device 3 while ensuring the heating feeling of the occupant 15 and further ensure the window fogging prevention performance.

  Further, since the radiant heat is released from the device 2, the occupant 15 can easily feel the warmth by the radiant heat, so that the occupant 15 can have a feeling of heating even if the amount of air blown by the air conditioner is reduced. Further, when radiant heat is released from the device 2, the skin temperature of the occupant 15 is also increased by the radiant heat, so that the occupant 15 does not feel cold even if the air conditioning output is reduced.

  In addition, there is a wind blown from the defroster outlet 21, and during the heater heating operation, by reducing the amount of air blown, the power consumption of the blower that provides the conditioned air is reduced, and the system as a whole is provided with power saving heating Contributes to

  The control device of the heater air-conditioning system 1 determines the amount of air blown by the air-conditioning device 3 to be lowered as compared to when the heater heating operation is not performed, according to the target blowout temperature TAO of the air-conditioning operation. According to this, since the degree of decrease in the air flow rate is determined according to the target blowing temperature TAO used for normal air conditioning control, the necessary air conditioning capacity can be secured using the TAO, and the air flow rate is suppressed to an appropriate air flow rate. Can do.

  The control device of the heater air-conditioning system 1 determines the ventilation opening degree of the defroster outlet passage, which is set larger than when the heater heating operation is not performed, according to the target outlet temperature TAO of the air-conditioning operation. According to this, since the increase degree of the ventilation opening degree of a defroster blowing passage is determined according to the target blowing temperature TAO used for normal air-conditioning control, the necessary air-conditioning capacity can be secured using TAO and appropriate Defroster blowing air volume can be set.

(Second Embodiment)
In the second embodiment, another embodiment for cooperative control between the heater heating operation and the air conditioning operation described in the first embodiment will be described with reference to FIGS. 6 and 7. In FIG. 6, steps denoted by the same step numbers as in FIG. 3 are the same processing and have the same effects. Only the contents different from the first embodiment will be described below.

  FIG. 6 is a flowchart regarding cooperative control according to the second embodiment. FIG. 7 is an example of a control map used to determine the target opening (%) of the foot door in Step 100 shown in FIG.

  As shown in FIG. 6, after the process of step 70, in the next step 100, the target opening degree of the foot door which is one of the blowing mode switching doors corresponding to the ventilation opening degree of the foot blowing passage is determined. The foot outlet passage is a passage that leads to a foot outlet 22 that opens into the vehicle interior 10. The target opening degree of the foot door is obtained using a characteristic map stored in advance that defines the relationship between the target blowing temperature TAO and the target opening degree of the foot door.

  For example, according to the characteristic map shown in FIG. 7, the target opening degree (%) of the foot door is obtained from the target blowing temperature TAO calculated using the above-described equation (1), and output to the servo motor based on this target opening degree. The control signal to be determined is determined. FIG. 7 shows a characteristic map related to the target opening degree and TAO determined when the heater heating operation is not performed by a solid line, and two characteristic maps related to the target opening degree and TAO determined when the heater heating operation is performed. Shown with a chain line. As shown in FIG. 7, according to the characteristic map indicated by the two-dot chain line, it is understood that the target opening value corresponding to TAO is determined to be smaller than the characteristic map indicated by the solid line.

  Therefore, the target opening of the foot door determined in step 100 is set to a value smaller than the target opening corresponding to the normal air conditioning described above. In other words, the target opening of the foot door is set to a smaller value than when the heater heating operation by the device 2 is not performed.

  Next, in step 110, a process of applying the control signal controlled so as to be the target opening of the foot door determined in step 100 to the servo motor that drives the foot door is executed, and this flowchart is ended. By this processing, the ventilation opening degree of the foot outlet passage during the heater heating operation is set to a smaller value than in the case of the cooperative control described in the first embodiment. The air volume of the supplied conditioned air is reduced.

  Next, the effect which the heater air-conditioning system 1 of 2nd Embodiment brings is demonstrated. In step 100 and 110, the heater air-conditioning system 1 controls the air opening degree of the foot blowing passage to be further reduced, and blows air-conditioned air from the foot blowing passage toward the lower body of the occupant.

  According to this control, when the air is blown from both the defroster outlet 21 and the foot outlet 22 to the vehicle interior 10, the amount of air blown through the defroster outlet passage is reduced by the amount of air blown out through the foot outlet passage. Can be increased. Therefore, the defogging performance of the window can be enhanced by increasing the amount of air blown from the defroster outlet 21.

  The control device determines the ventilation opening degree of the foot outlet passage to be controlled to be small as described above according to the target outlet temperature TAO of the air conditioning operation. According to this, since the degree of decrease in the ventilation opening degree of the foot outlet passage is determined according to the target outlet temperature TAO used for normal air conditioning control, the necessary air conditioning capacity can be secured using the TAO and appropriate The foot blowing air volume can be set.

(Third embodiment)
In the third embodiment, another embodiment for the cooperative control between the heater heating operation and the air conditioning operation described in the first embodiment will be described with reference to FIG. In FIG. 8, the steps denoted by the same step numbers as in FIG. 3 are the same processing, and have the same effects. Only the contents different from the first embodiment will be described below.

  FIG. 8 is a flowchart regarding cooperative control according to the third embodiment. As shown in FIG. 8, if it is determined in step 10 that the indoor blower is in operation, it is next determined in step 20A1 whether or not the current blowing mode is the foot blowing mode. If it is determined in step 20A1 that the current blowing mode is not the foot blowing mode, this flowchart is terminated.

  If it is determined in step 20A1 that the current blowing mode is the foot blowing mode, then in step 20A2, whether or not the foot blowing mode has been changed to any one of the defroster blowing mode, the foot defroster blowing mode, and the foot rear blowing mode is determined. judge. If the determination in step 20A2 is NO, this flowchart ends.

  If the determination in step 20A2 is YES, it is next determined in step 30 whether or not the heater body of the apparatus 2 is being operated. If it is determined in step 30 that the device 2 is not operating, then in step 30A2, the device 2 is operated and the heater heating operation is started. And it progresses to step 40, the above-mentioned step 4, step 50, step 60, and step 70 are performed in order, and this flowchart is complete | finished.

  If it is determined in step 30 that the device 2 is operating and radiating radiant heat, then in step 30A1, the DC power duty control is performed so as to increase the surface temperature of the substrate portion, and the amount of radiant heat generated by the device 2 Increase. Then, step 40, step 50, step 60, and step 70 described above are executed in order, and this flowchart is ended.

  Next, the effect which the heater air-conditioning system 1 of 3rd Embodiment brings is demonstrated. When the control device is changed from the state of the foot blowing mode in which the conditioned air is blown toward the occupant 15 to the blowing mode in which the amount of blowing air from the foot blowing passage is smaller than the foot blowing mode, the heater heating operation is performed. When the operation is not performed, the heater heating operation is started. In addition, the control device controls the radiant heater device 2 so as to increase the amount of radiant heat when the heater heating operation is performed.

  As described above, the defroster blowing mode, the foot defroster blowing mode, and the foot rear blowing mode are modes in which the amount of air blown from the front seat foot outlet 22 to the vehicle interior 10 is less than the foot blowing mode. For this reason, according to the control of the third embodiment, the change in the blowout air volume from the foot blowout port 22 in the front seat by changing from the state of the foot blowout mode to any one of the above blowout modes, It can be supplemented by the radiant heat of the heater heating operation. Therefore, according to the heater air-conditioning system 1 of 3rd Embodiment, since the fall of the heating feeling by an air conditioning can be supplemented by the amount of radiant heat, it contributes to maintaining the heating feeling of the passenger | crew's 15 step.

(Other embodiments)
The preferred embodiments of the disclosed invention have been described above, but the disclosed invention is not limited to the above-described embodiments, and various modifications can be made.

  The structure of the above-described embodiment is merely an example, and the technical scope of the disclosed invention is not limited to the scope of these descriptions. The technical scope of the disclosed invention is indicated by the description of the scope of claims, and further includes all modifications within the meaning and scope equivalent to the description of the scope of claims.

  In the above-described embodiment, the control device that controls the heater heating operation by the radiant heater device 2 and the air conditioning operation by the air conditioner 3 is configured by the heater ECU 4 and the air conditioning ECU 5. In this way, the control device is not limited to a configuration including a plurality of ECUs that communicate with each other. For example, the control device may be a single control device that controls the operation of both the radiation heater device 2 and the air conditioner 3, that is, a system control device.

  In addition, the heater ECU 4 of the above-described embodiment is a control device that is configured to be communicable with the air conditioning ECU 5 and is separate from the air conditioning ECU 5, but is not limited to this form. For example, the heater ECU 4 may be a common control device integrated with the air conditioning ECU 5.

  In the above-described embodiment, the heater ECU 4 is a control device that controls automatic heater heating operation. In this case, the heater ECU 4 performs control to vary the amount of radiant heat of the device 2, that is, the heater output. However, the heater ECU 4 may be a control device that permits a heater heating operation that is a constant heater output and prohibits the heater heating operation without changing the heater output.

  In the second embodiment described above, it has been described that the target opening of the foot door is determined to be small in step 100, but it may be determined to be a zero target opening. In this case, since the foot outlet passage is blocked by the foot door, the outlet from the foot outlet 22 is not performed.

2 ... Radiation heater device 3 ... Air conditioning device 4 ... Heater ECU (control device)
5. Air conditioning ECU (control device)
10 ... Car interior

Claims (5)

A radiant heater device (2) having a heat generating portion that generates heat by energization and performing a heater heating operation that radiates radiant heat into the vehicle interior (10) by heat supplied from the heat generating portion;
An air conditioner (3) for blowing conditioned air whose temperature is adjusted to the vehicle interior;
A control device (4, 5) for controlling the heater heating operation by the radiation heater device and the air conditioning operation by the air conditioner in association with each other;
With
The control device, the conditioned air is set blowing mode Ru blown into the passenger compartment from the blown out foot outlet passages toward the defroster outlet passages to the windows of the vehicle, and in the case of performing the heater heating operation, the Control is performed so as to reduce the amount of air blown by the indoor blower of the air conditioner and to increase the ventilation opening degree of the defroster outlet passage and to reduce the ventilation opening degree of the foot outlet passage than when the heater heating operation is not performed. A heater air-conditioning system.   2. The heater air-conditioning system according to claim 1, wherein the control device determines the amount of air to be reduced in the air-conditioning device according to a target blowing temperature of the air-conditioning operation.   3. The heater air conditioning according to claim 1, wherein the control device determines a ventilation opening degree of the defroster outlet passage that is largely controlled in the air conditioner according to a target outlet temperature of the air conditioning operation. system. The said control apparatus determines the ventilation opening degree of the said foot blowing passage controlled in the said air conditioning apparatus small according to the target blowing temperature of the said air-conditioning driving | operation. Heater air conditioning system as described in 1. Further, the control device is changed from the state of the foot blowing mode in which the conditioned air is blown out from the foot blowing passage toward the lower body of the occupant to the blowing mode in which the amount of blowing air from the foot blowing passage is smaller than the foot blowing mode. When the heater heating operation is performed, the radiant heater device is controlled so as to increase the amount of radiant heat, or when the heater heating operation is not performed, the heater heating operation is started. The heater air-conditioning system according to any one of claims 1 to 4 .

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