JP6167848B2 - Vehicle heating device and vehicle heating device drive program - Google Patents

Description

  The present invention relates to a vehicle heating device that heats using radiant heat and a vehicle heating device drive program.

  A general vehicle heating device heats the vehicle interior by circulating engine coolant through a heat exchanger provided in the vehicle interior. 2. Description of the Related Art In recent years, with the spread of hybrid vehicles, electric vehicles, and the like, it is known that the interior of a vehicle is heated together with heating using radiant heat such as an electric heater.

  For example, Patent Literature 1 discloses a vehicle interior air conditioner that controls a vehicle interior air conditioner by calculating a necessary air outlet temperature in accordance with environmental information outside the vehicle interior and vehicle driving information, and includes a step of the air conditioner unit. In a vehicle heating apparatus comprising a vehicle interior air conditioner in which the blowout air volume is adjustable, and a radiant heat heating device that heats the occupant's foot atmosphere, It has been proposed to control the vehicle interior air conditioner and the radiant heat heater so that the mutual ratio with the input power has the same temperature sensation in the passenger's foot.

JP 2012-192829 A

  By the way, when both an air conditioner and a radiant heat heater (hereinafter referred to as a radiant heat generator) are provided as in Patent Document 1, the air conditioner is provided to control a radiant heat generator of the radiant heat generator. By detecting the temperature inside the vehicle using the inside air temperature sensor and controlling the driving of the radiant heat generating unit, it is not necessary to provide the inside air temperature sensor in the radiant heat generating device, and the configuration can be simplified.

  In such a configuration, when both the air conditioner and the radiant heat generator are operated, the inside air temperature sensor is turned on (detectable state), and the vehicle interior temperature can be detected. However, when only the radiant heat generating device is operated alone with the air conditioner turned off, the internal air temperature sensor is not in a detectable state, and thus control that detects the vehicle interior temperature cannot be performed.

  The present invention has been made in consideration of the above-described facts. In a vehicle heating apparatus including a radiant heat generation unit that generates radiant heat and an air conditioner that air-conditions the vehicle interior, an existing vehicle interior temperature detection device is provided. An object is to make it possible to independently control a radiant heat generation unit using a detection unit.

In order to achieve the above object, an invention according to claim 1 is provided with a detection unit that detects a vehicle interior temperature, an air conditioner that air-conditions the vehicle interior based on a detection result of the detection unit, and generates radiant heat. When the radiant heat generating unit for heating the vehicle interior and the radiant heat generating unit for heating without heating the air conditioner to heat the vehicle interior, the detection unit is energized and controlled to transit to a detectable state. A transition control unit; and a control unit that controls driving of the radiant heat generation unit based on a detection result of the detection unit.

  According to the first aspect of the present invention, the air conditioner includes the detection unit that detects the vehicle interior temperature, and the vehicle interior is air-conditioned based on the detection result of the detection unit. The radiant heat generator generates radiant heat to heat the passenger compartment.

In addition, the transition control unit is controlled so as to transition to a detectable state by energizing the detection unit when heating is performed by generating radiant heat by the radiant heat generation unit without operating the air conditioner.

  And in a control part, the drive of a radiant heat generation part is controlled based on the detection result of a detection part.

  That is, even when the air conditioner is not operated, the detection unit is shifted to a detectable state, so that the radiant heat generation unit can be controlled. Therefore, in the vehicle heating device including the radiant heat generation unit using the radiant heat and the air conditioner that air-conditions the vehicle interior, the radiant heat generation unit can be controlled independently using the existing detection unit.

  In addition, when a detection part changes to a detectable state by operating the ventilation part which ventilates the wind for air conditioning like invention of Claim 2, a transition control part makes an air conditioner When heating is performed using radiant heat by the radiant heat generation unit without being operated, the air blowing unit may be controlled to operate. Thereby, the detection unit can be shifted to a detectable state.

In this case, as in the third aspect of the present invention, the apparatus further includes a switching unit that switches a blow-out port that blows out the air blown from the blower unit from a plurality of blow-out ports including a blow-out port that blows the wind toward the front windshield glass. , the transition control unit further may control the switching unit to blow wind blown from the blower unit to the front windshield glass.

  In addition, this invention is the vehicle heating apparatus drive program for functioning a computer as a transition control part and control part in any one of Claims 1-3 like invention of Claim 4. It is good.

  As described above, according to the present invention, in a vehicle heating apparatus including a radiant heat generation unit that uses radiant heat and an air conditioner that air-conditions the vehicle interior, an existing detection unit that detects the vehicle interior temperature is used. There is an effect that the radiant heat generating section can be controlled independently.

It is a figure which shows the general vehicle mounting position of the heating apparatus for vehicles which concerns on embodiment of this invention. (A) is a perspective view which shows schematic structure of a radiant heat generator, (B) is sectional drawing of the dotted-line part of (A). It is a block diagram which shows schematic structure of the heating apparatus for vehicles which concerns on embodiment of this invention. It is a flowchart which shows an example of the flow of the process performed with the radiant heating controller of the heating apparatus for vehicles which concerns on embodiment of this invention.

  Hereinafter, an example of an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a diagram showing a schematic vehicle mounting position of a vehicle heating apparatus according to an embodiment of the present invention.

  The vehicle heating device 10 according to the present embodiment includes a radiant heat heating controller 12 and a radiant heat generator 14 as shown in FIG.

  The radiant heat generator 14 is provided with a protective grid 14B on the occupant side serving as the heat radiating side. In the radiant heat generating device 14, the radiant heat generating unit 14 </ b> A is controlled by the radiant heat heating controller 12.

  In the present embodiment, the radiant heat heating controller 12 is connected to the radiant heat generating unit 14 </ b> A and an air conditioner 20 that air-conditions the passenger compartment. The radiant heat heating controller 12 generates radiant heat from the air conditioner 20. In order to control the driving of the unit 14A, the detection result of the passenger compartment temperature is acquired and the radiant heat generating unit 14A is controlled.

  For example, as illustrated in FIG. 1, the radiant heat generation unit 14 </ b> A is provided near the occupant's feet below the instrument panel, and heats the occupant's feet with radiant heat. For the radiant heat generating unit 14A, for example, various heating elements such as an electric heater wire or a resistor having PTC characteristics can be applied.

  FIG. 2A is a perspective view illustrating a schematic configuration of the radiant heat generating device 14, and FIG. 2B is a cross-sectional view taken along a dotted line in FIG.

  The radiant heat generating device 14 is provided with a protective grid 14B on the front surface side (occupant side) which is the heat radiation side of the radiant heat generating unit 14A, and is configured so that the occupant cannot directly touch the radiant heat generating unit 14A.

  Further, as shown in FIG. 2B, a reflective layer 14C is provided on the side of the radiant heat generating unit 14A of the protective grid 14B, and heat transfer of radiant heat is suppressed by the reflective layer 14C. That is, the radiant heat transfer from the radiant heat generating portion 14A to the protective grid 14B and the convective heat transfer due to the surrounding convection are conducted to the protective grid 14B by heat conduction, but are partially reflected by the reflective layer 14C. The heat generation of the protective grid 14B is suppressed. Thereby, the heat damage to the periphery of the radiant heat generator 14 is suppressed.

  FIG. 3 is a block diagram showing a schematic configuration of the vehicle heating apparatus 10 according to the embodiment of the present invention.

  As described above, the vehicle heating apparatus 10 includes the radiant heat heating controller 12 and the radiant heat generation unit 14A. Further, the vehicle heating apparatus 10 is provided with a radiant heat heating switch 16 for turning on / off generation of radiant heat by the radiant heat generating unit 14 </ b> A, and is connected to the radiant heat heating controller 12.

  On the other hand, the air conditioner 20 connected to the radiant heat heating controller 12 includes a general refrigerant cycle. In FIG. 3, an example of the air conditioner 20 provided with the general refrigerant cycle is shown.

  That is, in the air conditioner 20, a refrigeration cycle is constituted by a refrigerant circulation path including the compressor 21, the condenser 23, the expansion valve 18, and the evaporator 27.

  The compressor 21 compresses the refrigerant and circulates the circulation path. The compressor 21 may be mechanically driven using the power of the vehicle, or may be driven without the power of the vehicle by applying an electric compressor. In the case of mechanical driving, on / off of the compressor 21 can be controlled by an electromagnetic clutch that performs transmission / reception of power. When a mechanically driven compressor is applied, the air conditioner 20 can be mounted on a vehicle that travels with the power of an internal combustion engine such as an engine, a hybrid vehicle that includes an engine and a motor, and the like. In addition to the above, the air conditioner 20 can be mounted on an electric vehicle or the like.

  The evaporator 27 cools the air passing through the evaporator 27 (hereinafter referred to as air after the evaporator) by vaporizing the refrigerant that has been compressed and liquefied. At this time, the evaporator 27 cools the passing air so as to condense moisture in the air, whereby the air after the evaporator 27 is dehumidified.

  The expansion valve 18 provided on the upstream side of the evaporator 27 reduces the liquefied refrigerant abruptly and supplies the refrigerant to the evaporator in the form of a mist. The vaporization efficiency of the refrigerant is improved.

  The evaporator 27 of the air conditioner 20 is provided inside the air conditioning duct 38. The air conditioning duct 38 is open at both ends, and air intake ports 40 and 42 are formed at one opening end. Further, a plurality of air outlets 44 (44A, 44B, and 44C are shown as an example in the present embodiment) that are opened toward the vehicle interior are formed at the other opening end. Examples of the air outlet 44 include an outlet (DEF) that blows out toward the glass, an outlet (FACE) that blows out toward the occupant, and an outlet (FOOT) that blows out toward the feet.

  The air inlet 42 communicates with the outside of the vehicle and can introduce outside air into the air conditioning duct 38. Further, the air intake port 40 communicates with the passenger compartment so that air (inside air) in the passenger compartment can be introduced into the air conditioning duct 38. The air outlet 44 is, for example, a defroster outlet 44A that blows out air toward the windshield glass, a side and center register outlet 44B, and a foot outlet 44C.

  In the air conditioning duct 38, a blower fan 46 for blowing air for air conditioning is provided between the evaporator 27 and the air intake ports 40 and 42. A mode switching damper 48 is provided in the vicinity of the air intake ports 40 and 42. The mode switching damper 48 opens and closes the air intake ports 40 and 42 by the operation of an actuator such as the mode switching damper motor 24.

  The blower fan 46 is rotated by driving the blower motor 22, sucked into the air conditioning duct 38 from the air intake port 40 to the air intake port 42, and further sends this air toward the evaporator 27. At this time, outside air or inside air is introduced into the air conditioning duct 38 in accordance with the open / close state of the air intake ports 40 and 42 by the mode switching damper 48. That is, the mode switching damper 48 switches between the inside air circulation mode and the outside air introduction mode.

  An air mix damper 50 and a heater core 52 are provided downstream of the evaporator 27. The air mix damper 50 is rotated by driving the air mix damper motor 36 and adjusts the amount of air after the evaporator 27 that passes through the heater core 52 and the amount that bypasses the heater core 52. The heater core 52 circulates engine coolant and heats the air guided by the air mix damper 50 with the engine coolant.

  The air after the evaporator 27 is guided to the heater core 52 according to the opening degree of the air mix damper 50 and heated, and further mixed with the air not heated by the heater core 52 and then sent to the air outlet 44. Is done. In the air conditioner 20, the air mix damper 50 is controlled to adjust the amount of air heated by the heater core 52, thereby adjusting the temperature of the air blown out from the air blowing port 44 toward the vehicle interior.

  In the vicinity of each air outlet 44, an outlet switching damper 54 is provided correspondingly. In the air conditioner 20, the air outlet 44A, 44B, 44C is opened and closed by these outlet switching dampers 54, whereby the temperature-adjusted air can be blown out from a desired position into the vehicle interior.

  The air conditioner 20 includes an air conditioner ECU (Electronic Control Unit) 11 for performing various controls of the air conditioner 20. The air conditioner ECU 11 includes the blower motor 22, the mode switching damper motor 24, the air mix damper motor 36, the outlet switching damper motor 34, the compressor 21, the outside air temperature sensor 32, the inside air temperature sensor 30, the solar radiation sensor 28, glass, and the like. The humidity sensor 13 and the glass temperature sensor 15 are connected, and an operation unit 19 for performing various operations of the air conditioner 20 such as temperature setting of the air conditioner 20 and selection of the outlet is connected. Detection values of the sensor 32, the inside air temperature sensor 30, the solar radiation sensor 28, the glass humidity sensor 13, and the glass temperature sensor 15 are input to the air conditioner ECU 11, and the vehicle is set according to the setting of the operation unit 19 based on the detection result of each sensor. Indoor air conditioning control is performed. The glass humidity sensor 13 and the glass temperature sensor 15 are respectively provided on the glass. The glass humidity sensor 13 detects the humidity in the vehicle interior (particularly near the glass), and the glass temperature sensor 15 detects the glass atmosphere temperature. To do. Moreover, although the glass humidity sensor 13 and the glass temperature sensor 15 are shown separately, they may be integrated. The glass humidity sensor 13 and the glass temperature sensor 15 may be omitted.

  Further, the air conditioner ECU 11 is connected to an engine ECU 25 that controls the operation of the engine. In the present embodiment, the detected value of the water temperature sensor 17 that detects the coolant temperature of the engine coolant that is input to the engine ECU 25 is input to the air conditioner ECU 11. In this embodiment, an example in which the detected value of the water temperature sensor 17 is input to the air conditioner ECU 11 via the engine ECU 25 is shown, but the water temperature sensor 17 may be directly connected to the air conditioner ECU 11.

  The air conditioner ECU 11 controls the blower motor 22, the compressor 21, the mode switching damper motor 24, the air mix damper motor 36, the outlet switching damper motor 34, and the like based on the detection value of each sensor, thereby Air conditioning is to be performed.

  As an example of various controls performed by the air conditioner ECU 11, for example, when the ignition switch is turned on, the target blowing temperature is obtained by the following (1) based on the detection result of each sensor, the setting content of the operation unit 19, and the like. Air-conditioning control is performed so that the target blowing temperature is reached.

  Tao = k1, Tset-k2, Ta-k3, Tr-k4, ST + C (1)

  Here, k1, k2, k3, k4, and C represent constants, Tset represents the set temperature, Tr represents the cabin temperature, Ta represents the outside temperature, and ST represents the amount of solar radiation.

  When the air conditioner ECU 11 performs air conditioning control, the compressor 21 on / off control, the drive control of the air mix damper motor 36, the switching control of the air outlet 44, and the air intake 40 according to the target outlet temperature and the like. , 42 (the so-called auto air conditioner control) such as switching control (mode switching control in the inside air circulation mode and the outside air introduction mode). The switching control of the air intake ports 40 and 42 may be performed manually by the occupant operating the operation unit 19.

  Further, when the humidity detected by the glass humidity sensor 13 is equal to or higher than a predetermined threshold humidity, the air conditioner ECU 11 also performs anti-fogging control by controlling the compressor 21 to be turned on and dehumidifying it. It has become.

  The air conditioner ECU 11 controls the blower motor 22 so as to prevent a cold wind in winter when the water temperature detected by the water temperature sensor 17 is equal to or lower than a predetermined threshold water temperature.

  In the present embodiment, the radiant heat heating controller 12 acquires the detection result of the internal air temperature sensor 30 from the air conditioner ECU 11 of the air conditioner 20, and controls the driving of the radiant heat generation unit 14A based on the detection result. For example, the target temperature of the radiant heat generating unit 14A determined by comfort with respect to the target blowing temperature TAO of the air conditioner 20 is mapped, the target temperature of the radiant heat generating unit 14A determined by comfort is determined from the target blowing temperature, and the radiant heat generating unit 14A is obtained. To control. The control of the radiant heat generating unit 14A is performed, for example, by setting the correspondence relationship between the duty ratio of the pulse voltage for driving the radiant heat generating unit 14A and the target temperature of the radiant heat generating unit 14A to the target temperature of the radiant heat generating unit 14A. This is performed by applying a pulse voltage having a corresponding duty ratio to the radiant heat generating unit 14A.

  By the way, the vehicle heating apparatus 10 configured as described above includes the air conditioner 20 and the radiant heat generator 14, and an internal air temperature sensor for detecting the passenger compartment temperature is provided in the air conditioner ECU 11 of the air conditioner 20. Although connected, the vehicle interior temperature is also necessary to control the radiant heat generating unit 14A of the radiant heat generating device 14, so the radiant heat heating controller 12 detects the detection result of the internal air temperature sensor 30 from the air conditioner ECU 11 of the air conditioner 20. To get.

  However, if the air conditioner 20 is not operating (in this embodiment, the blower motor 22 is not operating), the inside air temperature sensor 30 is not in a detectable state and therefore cannot detect the vehicle interior temperature. The device 14 cannot be operated and controlled alone.

  Therefore, in the present embodiment, when the radiant heat generating device 14 is operated alone, the internal air temperature sensor 30 is shifted to a detectable state by operating the blower motor 22. Thereby, the radiant heat generating device 14 can be operated independently using the existing inside air temperature sensor 30. In the present embodiment, when the blower motor 22 is operated, other sensors such as the glass humidity sensor 13 are also turned on to perform the anti-fogging control.

  Further, when the radiant heat generating device 14 is operated alone, the glass such as the front windshield glass is likely to be fogged, so that it is blown out from the defroster outlet (DEF) 44 that blows out toward the glass, and antifogging control is performed. ing. Thereby, fogging of the glass can be suppressed.

  In this embodiment, the vehicle interior temperature for controlling the radiant heat generating unit 14A is obtained by the radiant heat heating controller 12 through the air conditioner ECU 11 of the air conditioner 20, and the radiant heat heating controller 12 acquires the detection result of the internal temperature sensor 30. The detection result of the sensor 30 may be directly acquired by the radiant heat heating controller 12. In this case, when the radiant heat generating device 14 is operated alone, the radiant heat generating device 14 is operated independently even if only the internal air temperature sensor 30 is shifted to a detectable state while the blower motor 22 is off. It becomes possible to make it.

  Then, the specific process performed with the radiant heat heating controller 12 of the heating apparatus 10 for vehicles comprised as mentioned above is demonstrated. FIG. 4 is a flowchart illustrating an example of a flow of processing performed by the radiant heat heating controller 12 of the vehicle heating device 10 according to the embodiment of the present invention. In the present embodiment, the process of FIG. 4 is described as starting when the radiant heat heating switch 16 is turned on.

  When the radiant heat heating switch 16 is turned on, in step 100, the radiant heat heating controller 12 determines whether or not the air conditioner 20 is turned on. This determination is performed by confirming whether the operation of the blower fan 46 is instructed by the operation unit 19 via the air conditioner ECU 11. If the determination is affirmative, the process proceeds to step 102, and is denied. If YES in step 104, the flow advances to step 104.

  In step 102, the radiant heat generating unit 14A is controlled based on the target blowing temperature TAO in consideration of the operation of the air conditioner 20, and the process is returned. For example, for the air conditioner 20, the air conditioner ECU 11 controls the operation of the compressor 21, the air volume, the air mix damper 50, etc. based on the target blowing temperature TAO, and for the radiant heat generator 14, the air conditioner 20 is activated. The temperature of the radiant heat generating unit 14A determined by the comfort with respect to the target blowing temperature TAO is determined in advance, the temperature of the radiant heat generating unit 14A corresponding to the target blowing temperature is obtained, and the radiant heat generating unit is set to the obtained temperature. The duty ratio of the voltage applied to 14A is controlled. When the process is returned, if there is an interrupt process, another process is performed. If there is no interrupt process, the process returns to step 100 and the above process is repeated.

  On the other hand, in step 104, the outlet is switched to DEF, and the routine proceeds to step 106. In the present embodiment, the radiant heat controller 12 instructs the air conditioner ECU 11 to switch the air outlet to DEF, and the air conditioner ECU 11 drives the air outlet switching damper motor 34 so that the defroster air outlet (DEF) 44 Switch to blow.

  In step 106, the blower motor 22 is turned on and the routine proceeds to step 108. That is, the radiant heating controller 12 instructs the air conditioner ECU 11 to turn on the blower motor 22 to operate the blower motor 22. Thereby, in this Embodiment, even if the inside temperature sensor 30 changes to a detection possible state and the operation | movement instruction | indication of the air conditioner 20 is not given, control of the radiant heat generation part 14A is attained.

  In step 108, anti-fogging control is performed by the window fogging environment, and the routine proceeds to step 110. As the antifogging control, for example, when the humidity detected by the glass humidity sensor 13 is equal to or higher than a predetermined threshold humidity, the antifogging control is performed by controlling the compressor 14 to be turned on and dehumidifying it. . In the anti-fogging control, not only the detection result of the glass humidity sensor 13 but also the detection result of the glass temperature sensor 15 or the water temperature sensor 17 may be used to control the on / off of the compressor 14. Further, in the anti-fogging control, the blower motor 22 may be controlled based on the detection results of various sensors so that only the air volume is controlled, or the operation of the compressor 14 and the air volume control may be performed. .

  In step 110, the radiant heat generating unit 14A is controlled based on the target blowing temperature TAO, and the process is returned. For example, the temperature of the radiant heat generation unit 14A determined by comfort with respect to the target blowing temperature TAO is determined in advance, the temperature of the radiant heat generation unit 14A corresponding to the target blowing temperature is obtained, and the radiant heat generation unit 14A is set to the obtained temperature. The duty ratio of the voltage applied to the is controlled. When the process is returned, if there is an interrupt process, another process is performed. If there is no interrupt process, the process returns to step 100 and the above process is repeated.

  That is, in the vehicle heating apparatus 10 according to the present embodiment, even when the operation of the air conditioner 20 is not instructed, the internal air temperature sensor 30 is shifted to the detectable state by operating the blower motor 22. In the vehicle heating device provided with the radiant heat generating unit using the air conditioner and the air conditioner, the radiant heat generating unit can be controlled independently using the existing internal air temperature sensor 30.

  In addition, when the radiant heat generating unit 14A is used alone, the blower motor 22 is turned on by switching to blow from the defroster outlet (DEF) 44, so that fogging of the front windshield glass can be suppressed.

  Furthermore, in order to control the radiant heat generating unit 14A, the above-described control is performed using the existing internal air temperature sensor 30 without providing a dedicated internal air temperature sensor, so that an inexpensive configuration can be achieved.

  In the above embodiment, the air conditioner 20 has been described as an example of the air conditioner 20 having the functions such as the above-described automatic air conditioner control and antifogging control. The blower motor 22 may be controlled so that the blower motor 22 is operated with the minimum air volume when the blower motor 22 is turned on in step 106 described above, and step 108 may be omitted.

  Further, the processing performed by the radiant heating controller 12 in each of the above embodiments may be stored and distributed as a program in a storage medium or the like.

10 Vehicle Heating Device 12 Radiant Heating Controller (Transition Control Unit and Control Unit)
14 radiant heat generator 14A radiant heat generator 30 internal temperature sensor

Claims (4)

An air conditioner that includes a detection unit that detects a vehicle interior temperature and that air-conditions the vehicle interior based on a detection result of the detection unit;
A radiant heat generator that generates radiant heat and heats the interior of the vehicle;
A transition control unit that controls the detection unit to energize and transition to a detectable state when heating by generating radiant heat by the radiant heat generation unit without operating the air conditioner; and
Based on the detection result of the detection unit, a control unit for controlling the driving of the radiant heat generation unit,
A vehicle heating device comprising: The detection unit transitions to a detectable state when the air blowing unit that blows air for air conditioning operates.
2. The vehicle heating device according to claim 1, wherein the transition control unit controls the air blowing unit to operate when the radiant heat generation unit heats the radiant heat generation unit without operating the air conditioner. A switching unit that further switches a blowout port that blows out the air blown from the blower unit from among a plurality of blowout ports including a blowout port that blows wind toward the front windshield glass,
The transition control unit, vehicle heating apparatus according to claim 2, further controlling the switching unit to blow wind blown from the blower unit to the front windshield glass.   The vehicle heating apparatus drive program for functioning a computer as the said transition control part in any one of Claims 1-3, and the said control part.

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