JP4187211B2 - Ventilator for vehicles - Google Patents

Description

  The present invention relates to a vehicle ventilator that ventilates when the temperature inside the vehicle rises during parking, and more particularly to a vehicle ventilator that forcibly exhausts stagnant air in the internal space of an instrument panel (hereinafter referred to as instrument panel).

  If the vehicle is stopped in the summer, the temperature inside the vehicle becomes 70 ° C. or higher, which gives the passengers an uncomfortable feeling and requires very large energy for cooling. In general, this is called a heat load during parking, and various countermeasures are taken. For example, there is a prior art such as a heat ray cut glass that prevents heat from entering the interior of the vehicle, or ventilates with a blower during parking, and discharges heat to the outside of the vehicle (for example, Patent Documents 1 to 3). 6).

  However, the above-mentioned known technique is merely for ventilating and introducing outside air, and does not efficiently expel vehicle interior air.

  In addition, as a ventilation technique, there is a technique in which a window is opened and a blower of an air conditioner is operated when a vehicle door lock is released (see, for example, Patent Document 7). However, the opening of the window with the release of the door lock and the blowing of wind using the air conditioner blower were unnatural and uncomfortable when the passengers boarded.

In addition, there is a technique in which ventilation is performed for a predetermined time after the door key is inserted (see, for example, Patent Document 8). However, the time from when the door key is inserted until the passenger enters the vehicle is very short, and the temperature inside the vehicle is not lowered.
JP-A-5-147426 JP-A-8-11524 Japanese Patent Publication No. 3-38134 JP-A-2-256510 JP-A 61-143211 Japanese Utility Model Publication No. 58-22308 Japanese Patent Laid-Open No. 5-286351 Japanese Patent Laid-Open No. 57-33011

  As a result of investigating the heat distribution in the vehicle, the present inventors found that the temperature near the windshield and the interior ceiling was around 64 ° C., whereas the instrument panel top panel was easily exposed to direct sunlight, and the instrument panel Since there are many components, these components are heated and become high temperature, and it turned out that an instrument panel part may exceed 90 degreeC. Some of these components have relatively large heat capacities and are difficult to cool once heated. And since the air in the instrument panel internal space is stagnant, it easily receives heat conduction and becomes very hot. The present invention forcibly exhausts the staying air in the instrument panel interior space to the outside of the vehicle, thereby lowering the temperature inside the instrument panel, thereby lowering the temperature of the instrument panel surface, and thus reducing the heat radiation heat energy into the vehicle. Objective. At this time, if the accumulated air in the instrument panel internal space can be efficiently discharged to the outside of the vehicle, it is effective for lowering the vehicle interior temperature. Accordingly, an object of the present invention is to provide a vehicle ventilator that efficiently discharges the heat of an instrument panel by connecting a discharge port of a ventilation blower to an intake part of an air conditioner. In particular, an object of the present invention is to provide a vehicle ventilator that ventilates when the vehicle interior temperature rises during parking in order to prevent the vehicle interior temperature from rising due to solar radiation during parking.

  Further, when a passenger gets into a vehicle having a high interior temperature, the interior ventilation is lowered by operating the vehicle ventilation device of the present invention before a predetermined time before boarding, so that the vehicle ventilation does not cause discomfort to the passenger. An object is to provide an apparatus.

In order to solve the above-mentioned problem, a vehicle ventilator according to the present invention forcibly exhausting air staying in an instrument panel interior space includes an outside air introduction passage communicating with an outside air inlet, an inside air inlet, and inside and outside air. An inside / outside air switching box having an intake door for switching introduction, a ventilation flow path for forming an air flow from the inside / outside air switching box toward an outlet in the vehicle, and the air flow provided in the ventilation flow path and the air conditioning blower forming a is disposed in the internal space of the instrument panel of a vehicle, and a ventilation blower inlet is placed close to the inner wall surface of the instrument panel with directed to the instrument panel side, one end A ventilation channel that communicates with the discharge port of the ventilation blower and the other end communicates with the outside air introduction channel, and an open / close damper provided in the ventilation channel. Further, to enter the engine operation-stop information from the engine control unit, enter the interior temperature information from the inside air sensor, the output signal of the actuating means to the on or off of the ventilation blower, open to the closing means of the open-close damper Or a control means for outputting a closing signal, inputting battery voltage information, and outputting a signal for setting the inside air introduction mode or a signal for setting the outside air introduction mode to the inside / outside air switching operation means of the intake door, the control means When the information indicating that the engine is stopped, the information indicating that the vehicle interior temperature is equal to or higher than the predetermined temperature, and the information indicating that the battery voltage is equal to or higher than the predetermined value are input, the ventilation blower operating means is turned on. outputs of the signal, and outputs an open signal to the switching means of the opening and closing damper, and outputs a signal to the inside air introduction mode to outside air switching operation unit of the intake door And wherein the door. Focusing on the fact that the staying air inside the instrument panel becomes high temperature, this device preferentially forcibly exhausts this air out of the vehicle. The temperature inside the instrument panel and thus the inside of the vehicle can be effectively reduced, and it is not necessary to open a special ventilation hole by using the outside air introduction part of the air conditioner as an exhaust port. In addition, the air at the highest temperature (near the inner wall surface of the instrumental panel) is preferentially forced out of the vehicle. And if a vehicle interior temperature rises during parking, it will ventilate and it can prevent the vehicle interior temperature rise by solar radiation during parking.

  Here, it is preferable that the suction port of the ventilation blower is directed to a portion of the instrument panel that receives solar radiation. The air at the highest temperature is forcibly exhausted preferentially outside the vehicle.

  Furthermore, it is more preferable to arrange the suction port at a position where no ventilation resistance is interposed between the suction port of the ventilation blower and the inner wall surface of the instrumental panel. The suction resistance can be reduced, and the staying air inside the instrument panel can be sucked and exhausted to every corner.

  In the vehicle ventilator according to the present invention, it is preferable to provide a ventilation suction duct having one end connected to the suction port of the ventilation blower and the other end opened near the inner wall surface of the instrument panel. It is possible to cope with the case where the suction port of the ventilation blower cannot be arranged near the inner wall surface of the instrumental panel due to space problems.

  In the vehicle ventilator according to the present invention, it is preferable that the suction port of the ventilation blower or the opening at the other end of the ventilation suction duct is a suction port for sucking in stagnant air in the internal space of the instrument panel. . Since the staying air in the internal space of the instrumental panel is hot, the temperature inside the instrument panel is effectively reduced by forcibly exhausting the air.

A vehicle ventilator according to the present invention includes an outside air introduction passage communicating with an outside air intake port, an inside air intake port, and an inside / outside air switching box having an intake door for switching between introduction of inside and outside air, An air flow path that forms an air flow from the inside / outside air switching box toward the air outlet in the vehicle, an air-conditioning blower that is provided in the air flow path and forms the air flow, and an internal space of the instrument panel of the vehicle A ventilation blower having a suction port communicating with a differential duct disposed under the top panel of the instrumental panel , one end communicating with the discharge port of the ventilation blower, and the other end serving as the outside air introduction channel. a ventilation passage in communication, with a closing damper provided該換air flow path, and further enter the engine operation-stop information from the engine control unit, enter the inside temperature information from the room air sensor , Outputs an on / off signal to the operation means of the ventilation blower, outputs an open / close signal to the opening / closing means of the open / close damper, inputs battery voltage information, and switches between the inside and outside air of the intake door Control means for outputting a signal for setting the inside air introduction mode or a signal for setting the outside air introduction mode. The control means includes information that the engine is stopped, information that the vehicle interior temperature is equal to or higher than a predetermined temperature, and a battery. When information indicating that the voltage is equal to or higher than a predetermined value is input, an ON signal is output to the ventilation blower operating means, an open signal is output to the open / close damper opening means, and the intake door A signal for setting the inside air introduction mode is output to the inside / outside air switching operation means . Since the differential duct is often arranged directly below the instrument panel top plate, the staying air in the differential duct becomes high temperature. By forcibly exhausting high-temperature staying air in the differential duct, the temperature in the instrument panel can be effectively reduced. And if a vehicle interior temperature rises during parking, it will ventilate and it can prevent the vehicle interior temperature rise by solar radiation during parking.

  Furthermore, in the vehicle ventilation device according to the present invention, it is preferable that the control means outputs a closing signal to the opening / closing means of the opening / closing damper when information indicating that the engine is in operation is input. Backflow from the intake air passage to the ventilation passage of the ventilation blower can be prevented, and during the air conditioning operation, intrusion of outside air can be prevented in the REC mode, and internal air can be prevented from being mixed in the fresh mode.

  In the vehicle ventilator according to the present invention, a door lock release signal is input, an on / off signal is output to the ventilation blower operating means, and an open / close signal is output to the open / close damper opening / closing means. And a control means for outputting a signal for setting the inside air introduction mode or a signal for setting the outside air introduction mode to the inside / outside air switching operation means of the intake door, the control means when the door lock release signal is input, Including a case in which an ON signal is output to the operating means of the ventilation blower, an open signal is output to the opening / closing means of the open / close damper, and a signal to set the inside air introduction mode to the inside / outside air switching operating means of the intake door is included. . In the vehicle ventilator according to the present invention that intensively ventilates the heat storage location, the vehicle interior temperature is reduced within a limited time until the passenger gets into the vehicle by operating the ventilation together with the door lock release. .

  Here, it is preferable that the control means compare and refer to the vehicle interior temperature and the outside air temperature in order to determine whether or not the vehicle ventilation device can be operated when the door lock is released. By judging the operation timing of the ventilator based on both the vehicle interior temperature and the vehicle exterior temperature, it is possible to cope with the phenomenon of hot in the middle period.

  Here, it is preferable that the control means operates the vehicle ventilator when the interior temperature is equal to or higher than a specified temperature. A specified value P is provided.

  Here, it is preferable that the control means determines whether or not the vehicle ventilator is operable by using a difference temperature between the vehicle interior temperature and the outside air temperature. By using this control, ventilation is possible when necessary regardless of whether it is heating, intermediate temperature, or hot weather. Even when the interior of the vehicle is supercooled during heating, the temperature can be expected to rise due to ventilation, and during hot weather, it can be efficiently operated when necessary. In particular, regarding the differential temperature Q shown here, 2 to 5 ° C. is generally desirable, but is not particularly limited.

  In the vehicle ventilator according to the present invention, it is preferable that the control means has a maximum operating time of 5 minutes after the operation of the vehicle ventilator. In this control and the device before and after boarding, it is defined that the maximum effect is measured for 5 minutes.

  In the vehicle ventilation device according to the present invention, the engine operation / stop information is input from the engine control device, the vehicle interior temperature information is input from the interior air sensor, and an on / off signal is output to the operation means of the ventilation blower, Control means for outputting an opening / closing signal to the opening / closing means of the opening / closing damper and outputting a signal for setting the inside air introduction mode or the signal for setting the outside air introduction mode to the inside / outside air switching operation means of the intake door; Receiving means for inputting information indicating that the vehicle is approaching, and outputting the information to the control means, wherein the control means has information that the engine is stopped and the vehicle interior temperature is equal to or higher than a predetermined temperature. And the information indicating that a passenger has approached the vehicle is input from the receiving means, and an ON signal is output to the ventilation blower operating means. And outputting an open signal to the switching means of the opening and closing damper, it is preferable and outputs a signal to the inside air introduction mode to outside air switching operation unit of the intake door. When a passenger gets into a vehicle having a high in-vehicle temperature, the vehicle ventilation device of the present invention can be operated and the in-vehicle temperature can be lowered a predetermined time before boarding, so that the passenger does not feel uncomfortable.

  Here, in the vehicle ventilation device according to the present invention, the information indicating that the passenger has approached the vehicle is a vehicle door lock key release signal transmitted from a vehicle key such as a smart key or a remote control key, and / or ventilation. It includes a case of a start signal, or a vehicle door lock key release signal or / and a ventilation start signal transmitted from a communication terminal such as a mobile phone or PHS. Since these information (signals) can be transmitted when the vehicle is away from the vehicle, the ventilation time before boarding can be secured for a predetermined time or more.

  Furthermore, in the vehicle ventilation device according to the present invention, the receiving means can receive information indicating that the passenger has approached the vehicle 1 to 5 minutes before the passenger gets into the vehicle. It is preferable to have. That is, in a distance range where the time required for the passenger to get into the vehicle is 1 to 5 minutes, the vehicle is equipped with a receiving means provided in the vehicle and a smart key, remote control key, mobile phone, PHS, etc. It is preferable that the information can be received / transmitted with the other communication terminal. As shown in the examples described later, the vehicle ventilator according to the present invention has an effect of lowering the vehicle interior temperature by ventilation for only one minute. Therefore, the passenger's discomfort can be reduced by operating the vehicle ventilation device 1 to 5 minutes before the passenger gets into the vehicle.

  According to the present invention, the high temperature air staying inside the instrument panel is forcibly exhausted outside the vehicle, thereby lowering the temperature inside the instrument panel, thereby lowering the temperature of the instrument panel surface, and thus reducing the heat radiation heat energy into the car. it can. At this time, the air staying inside the instrument panel is efficiently discharged outside the vehicle, which is effective for lowering the vehicle interior temperature. If the temperature inside the vehicle rises during parking, it can also be lowered.

Hereinafter, although this invention is demonstrated in detail, showing embodiment, this invention is limited to these description and is not interpreted. Hereinafter, the vehicle ventilator according to this embodiment will be described with reference to FIGS. 1 to 7 and FIG. 9.
(First embodiment)

  FIG. 1 is a schematic view showing an embodiment of a vehicle ventilation device 100 according to the present embodiment. The vehicle ventilator 100 includes an inside / outside air switching box 10 that is an intake portion, and ventilation passages 2a, 2b, and 2c that form an air flow from the inside / outside air switching box 10 toward an outlet (not shown) in the vehicle. A case 1 to be performed, an air-conditioning blower 11 disposed in the case 1, a ventilation blower 14 disposed in the internal space 4 of the instrument panel 3 of the vehicle, and a ventilation flow path 5 that is a duct for exhaust air of the ventilation blower 14 And an open / close damper 6 provided in the ventilation flow path 5. The vehicle ventilator 100 further has an evaporator 13 disposed in the case 1 and also serves as an HVAC. Further, in order to purify the air blown out from the air outlet (not shown) in the vehicle, the filter unit 12 may be disposed, for example, in the ventilation channel 2b in the case 1 as shown in FIG. Further, the vehicle ventilation device 100 includes a control unit 30 and a reception unit 36 that outputs information indicating that a passenger has approached the vehicle to the control unit 30.

  The inside / outside air switching box 10 has an outside air introduction passage 9 communicating with the outside air intake port 20, an inside air intake port 8, and an intake door 7 that switches between inside and outside air introduction. The vehicle outside air suction port 20 is a suction port for taking in outside air in the fresh mode, and the taken outside air is taken into the ventilation channel 2 a of the inside / outside air switching box 10 through the outside air introduction channel 9. The in-vehicle air intake 8 is an intake for taking in the air in the vehicle into the air flow path 2a of the inside / outside air switching box 10 in the recirculation (REC) mode.

  The ventilation channels 2a, 2b, 2c are formed by the case 1. An air flow 21 is formed in the ventilation channel 2a when the air taken into the inside / outside air switching box 10 is sucked by the air conditioning blower 11. An air flow 22 is formed in the ventilation passage 2b by the air conditioning blower 11. An air flow 23 of cooling air that has passed through the evaporator 13 is formed in the ventilation flow path 2c.

  The air-conditioning blower 11 is provided in the ventilation channel in the case 1 and forms the air flows 21, 22, and 23 as described above. In FIG. 1, the blower is a centrifugal sirocco fan, but may be a turbo fan or a once-through blower.

  The filter unit 12 is for purifying air, and it is preferable to combine a dust collection filter and a deodorizing filter in a filter frame that fixes the filter end so that the filter surface is not covered.

  The evaporator 13 constitutes an air conditioning refrigeration cycle. The refrigeration cycle includes at least a compressor (not shown) that compresses and discharges the vaporized refrigerant, a condenser (not shown) that cools the refrigerant discharged from the compressor and condenses the refrigerant, and throttles the refrigerant condensed by the condenser An expansion valve (not shown) that is made into a gas-liquid mixture by action and an evaporator 13 that cools and dehumidifies the air by the evaporation heat of the refrigerant that has become the gas-liquid mixture by the expansion valve. In addition, a heater core (not shown) and an air mix door (not shown) are disposed downstream of the air flow 23, and a vent outlet (not shown) and a side vent outlet ( A blowout opening such as a defrosting blowout opening (not shown) or a foot blowout opening (not shown) is provided.

  The instrument panel 3 of the vehicle accommodates the vehicle instrument, HVAC unit, and other components between the fire board and the driver seat / passenger seat, and partitions the compartment. The top panel portion of the instrument panel 3 of the vehicle is heated by receiving direct sunlight transmitted through the windshield. And the residence air of the internal space 4 of the instrument panel 3 becomes high temperature. The components arranged in the internal space 4 are also heated, but many of them have a large heat capacity, and once heated, it takes time to cool down.

  The ventilation blower 14 is disposed in the internal space 4 of the instrument panel 3 of the vehicle, and is preferably disposed so that the suction port 14a faces the instrument panel 3 in order to exhaust the high-temperature air staying in the internal space 4 of the instrument panel 3. . In particular, the suction port 14a of the ventilation blower 14 is preferably directed to a portion of the instrument panel 3 that receives solar radiation. That is, it is preferable to direct the suction port 14a toward a portion that receives direct sunlight at a portion near the windshield side of the instrument panel 3. By doing in this way, the hottest air can be forcibly exhausted preferentially among the stagnant air in the internal space 4 of the instrument panel 3. Further, the above-described components are arranged in the internal space 4 of the instrument panel 3 of the vehicle. In such a case, the suction port 14a of the ventilation blower 14 is located at a position where no ventilation resistor such as the above-described component is interposed between the inner wall surface of the instrument panel 3, that is, the rear wall surface of the instrument panel top plate. 14a may be arranged. If there is room in the internal space 4 of the instrument panel 3 of the vehicle, the suction port 14a of the ventilation blower 14 may be disposed near the inner wall surface of the instrument panel 3.

  Here, as shown in FIG. 2, the vehicle ventilation device 200 has a ventilation suction duct 29 in which one end is connected to the suction port 14 a of the ventilation blower 14 and the opening 28 at the other end is disposed near the inner wall surface of the instrument panel 3. May be provided. FIG. 2 is a schematic view showing an embodiment of a vehicle ventilation device provided with a ventilation suction duct. By providing the ventilation suction duct 29, it is possible to cope with a case where the suction port of the ventilation blower cannot be disposed near the inner wall surface of the instrument panel due to space problems. That is, in the vehicle ventilator 200, the ventilation blower suction port 14 a or the opening 29 of the ventilation suction duct 29 serves as a suction port for sucking in the accumulated air in the internal space 4 of the instrument panel 3.

  As shown in FIG. 1, the air flow 24 is formed in the internal space 4 of the instrument panel 3 by the operation of the ventilation blower 14. On the other hand, the discharge port of the ventilation blower 14 is provided with a ventilation channel 5 for communicating with the outside air introduction channel 9. Further, an open / close damper 6 is provided in the ventilation flow path 5. By controlling the opening / closing of the opening / closing damper 6 and the intake door 7, air flows 25 and 26 are formed to forcibly exhaust the air staying inside the instrument panel when the ventilation blower 14 is operated. And the temperature inside an instrument panel can be lowered | hung, the temperature of an instrument panel surface can be lowered | hung by it, and the heat radiation thermal energy to the inside of a vehicle can be reduced by extension. The component 45 disposed inside the instrument panel having a relatively large heat capacity is cooled by the formation of the air flow 24.

  The control means 30 inputs engine operation / stop information from an engine control device (engine ECU) 32, and inputs vehicle interior temperature information from an inside air sensor 31. Further, the control means 30 outputs an on / off signal to the operation means 34 for controlling the on / off of the ventilation blower 14, and outputs an open / close signal to the opening / closing means 33 of the opening / closing damper 6. Further, the control means 30 outputs a signal for setting the inside air introduction mode or a signal for setting the outside air introduction mode to the inside / outside air switching operation means 35 of the intake door 7.

  The receiving means 36 is a receiver that receives information indicating that the passenger has approached the vehicle. The receiving means 36 inputs information indicating that the passenger has approached the vehicle and outputs the information to the control means 30. The receiving means 36 may be installed in any of a vehicle door, trunk, dashboard, and the like. The information indicating that the passenger has approached the vehicle is, for example, a vehicle door lock key release signal or / and a ventilation start signal transmitted from a vehicle key such as a smart key or a remote control key, or a mobile phone, PHS, etc. There is a vehicle door lock key release signal or / and a ventilation start signal transmitted from the communication terminal. The vehicle door lock key release signal or / and the ventilation start signal are transmitted by a medium such as radio waves or infrared rays, thereby enabling remote operation. The remotely operable range is preferably a range in which the reception means 36 can receive information indicating that the passenger has approached the vehicle 1 to 5 minutes before the passenger enters the vehicle. For example, the radius is 80 m to 400 m with the vehicle as the center. However, it is not limited to a range with a radius of less than 80 m around the vehicle. From the viewpoint of vehicle security and ventilation time, it is preferable to operate the vehicle ventilator before releasing the door lock. In order to achieve this, it is necessary to use a ventilation start signal as information indicating that the passenger has approached. More preferred.

  A transmitter (not shown) may be installed in the vehicle. Only when a communication terminal such as a vehicle key, a mobile phone, or a PHS receives a signal from the transmitter and analyzes the signal and satisfies a predetermined condition, the receiving means 36 communicates such as a vehicle key, a mobile phone, or a PHS. You may provide a registration means and an authentication means so that the signal transmitted from the terminal may be received.

  Next, a method of using the vehicle ventilation device 100 will be described with reference to FIG. First, the case where normal air-conditioning operation is performed will be described. FIG. 3 is a conceptual diagram showing an air flow when the vehicle ventilator 100 performs an air conditioning operation as an air conditioner. The open / close damper 6 is closed. First, when the intake door 7 is set to the fresh mode, the air-conditioning blower 11 is operated, so that the outside air introduction flow path 9 does not cause the outside air taken in from the outside air intake port 20 to flow backward to the ventilation flow path 5. 27 is formed. And the air flow 21 in the ventilation flow path 2a is formed. Further, when the intake door 7 is set to the REC mode, the air conditioner blower 11 is operated, so that the vehicle interior air is taken in from the vehicle interior air intake 8 and an air flow 21 is formed in the ventilation passage 2a. The air flow 22 discharged from the air conditioning blower 11 is cleaned by the filter unit 12 and cooled by the evaporator 13. Part or all of the air flow 23 that has passed through the evaporator 13 is heated by a heater core (not shown), and blows out from an air outlet (not shown) in the vehicle. As described above, the vehicle ventilator 100 equipped with the HVAC performs air conditioning by blowing out air whose temperature and humidity are controlled into the vehicle.

  Next, a description will be given of a case where a ventilation operation is performed in which the interior of the vehicle is cooled down using the vehicle ventilation device 100 when the interior temperature rises due to solar radiation during parking. FIG. 4 is a conceptual diagram showing an air flow when the vehicle ventilation device 100 performs a ventilation operation as a ventilation device. FIG. 5 is a flowchart showing the operation of the vehicle ventilation device 100 according to this embodiment. The engine operating state is determined from the engine ECU 32 (step S1), and if it is off, it is determined whether or not the vehicle interior temperature is 40 ° C. or higher based on the value of the inside air sensor 31 (step S2). When the vehicle interior temperature is lower than 40 ° C., the ventilation blower 14 remains off (step S8), and the process returns to step S1. If the in-vehicle temperature is 40 ° C. or higher, it is determined whether or not the voltage of the in-vehicle battery indicated by the battery voltage sensor (not shown) is 12 V or higher (step S3). When the voltage of the vehicle-mounted battery is less than 12V, the ventilation blower 14 is kept off (step S8) to return to step S1 in order to prevent the battery from running out. On the other hand, when the voltage of the in-vehicle battery is 12 V or more, the intake door 7 is set to the REC mode by the inside / outside air switching operation means 35 of the intake door 7 in order to prevent air from flowing to the HVAC (step S4). Further, the opening / closing damper 6 is opened by the opening / closing means 33 (step S5). Next, the fan of the ventilation blower 14 is rotated by the operating means 34 (step S6). By operating the ventilation blower 14, high-temperature air staying in the internal space 4 of the instrument panel 3 is formed as an air flow 24 toward the suction port 14 a of the ventilation blower 14. The air discharged from the ventilation blower 14 forms an air flow 25 in the ventilation flow path 5 and flows into the outside air introduction flow path 9. Since the intake door 7 is in the REC mode, an air flow 26 is formed in the outside air introduction flow path 9, and high temperature air is discharged from the outside air intake port 20. Next, it is determined whether or not the voltage of the in-vehicle battery is less than 11V (step S7). If the in-vehicle battery voltage is less than 11V, the fan is turned off to prevent the battery from running out (step S8). On the other hand, when the voltage of the on-vehicle battery is 11 V or more, the process returns to step 1.

  When the engine is turned on (step S1), it is determined whether the air conditioner is on or off based on air conditioner information from an air conditioner ECU (not shown) (step S9). When the air conditioner is on, the fan of the ventilation blower 14 is turned off by the operating means 34 (step S10). Further, the open / close damper 6 is closed by the open / close means 33 (step S11). Thereby, it becomes an air-conditioning driving | operation which can be either REC mode or fresh mode. By closing the open / close damper 6, the outside air can be prevented from entering in the REC mode, and the inside air can be prevented from entering in the fresh mode. Then, the process returns to step S1.

In the flowchart of FIG. 5, the operation of the ventilation blower is determined based on the in-vehicle temperature of 40 ° C., but this is an example, and may be arbitrarily set at 35 ° C. or higher. Further, the operating means 34 of the ventilation blower 14 has a small air volume (20 m ³ / hr) when the vehicle interior temperature is 40 to 50 ° C., and a medium air volume (70 m ³ / hr) when the vehicle temperature is 50 to 60 ° C. In the case of 70 ° C. or higher, the fan speed may be controlled so that the air volume is large (100 m ³ / hr) and increases in proportion to the in-vehicle temperature. In addition, FIG. 5 shows a flow for preventing the battery from running out by the voltage of the in-vehicle battery. However, after the ventilation blower is turned on, the operation may be controlled to be turned off after a predetermined time has elapsed. Of course, two-stage control of ON / OFF corresponds to the scope of the present invention. For example, the ventilation fan may be operated when the temperature is 50 ° C. or lower, and when the temperature is 50 ° C. or higher.

Here, FIG. 6 shows a state of the air flow in the vehicle when the vehicle ventilator according to the present embodiment is operated. Arrows indicate air flow. During the air conditioning operation, as shown in FIG. 6A, the high-temperature region of the instrument panel 3 is not cooled preferentially, and the air circulates throughout the vehicle interior, so that the vehicle interior is air-conditioned on average. On the other hand, as shown in FIG. 6B, the high-temperature staying air in the internal space 4 of the instrument panel 3 is exhausted to the outside of the vehicle in a ventilation operation during parking. Therefore, the internal space 4 of the instrument panel 3 which is the highest region of the in-vehicle temperature distribution is intensively cooled, and an increase in the in-vehicle temperature during parking can be suppressed.
(Second form)

  FIG. 7 is a schematic view showing an embodiment of a vehicle ventilation device 300 according to this embodiment. The vehicle ventilator 300 has a configuration similar to that of the vehicle ventilator 100, except that the suction port 14a of the ventilation blower 14 communicates with the differential duct 40.

  The differential duct 40 is a duct that sends air to the defrost 41 and the side defrost 42 that are one of the in-vehicle outlets provided to prevent fogging of the windshield or the side glass of the driver's seat and the passenger seat. The differential duct 40 is often disposed under the top panel of the instrument panel 3. Many of the internal spaces 4 of the instrument panel 3 may be occupied by the differential duct 40. Therefore, when the top panel portion of the instrument panel 3 is heated by receiving direct sunlight transmitted through the windshield, the staying air in the differential duct 40 becomes high temperature. Since the component 45 having a large heat capacity arranged in the internal space 4 is also heated, the staying air in the differential duct 40 is similarly cooled once heated in the inner space 4 of the instrument panel 3. Will take time.

  In the vehicle ventilation device 300, as shown in FIG. 7, an air flow 43 is formed in the differential duct 40 toward the suction port 14 a by the operation of the ventilation blower 14. Accordingly, high-temperature air near the top panel of the instrument panel 3 is sucked through the defrost 41 and the side defrost 42 while forming an air flow 44. That is, high-temperature air near the top of the instrument panel 3 and high-temperature retained air in the differential duct 40 are sucked into the suction port 14 a by the operation of the ventilation blower 14. On the other hand, the discharge port of the ventilation blower 14 is provided with a ventilation channel 5 for communicating with the outside air introduction channel 9 as in the first embodiment. Further, an open / close damper 6 is provided in the ventilation flow path 5. By controlling the opening / closing of the opening / closing damper 6 and the intake door 7, when the ventilation blower 14 is operated, hot air near the top of the instrument panel 3 and hot staying air in the differential duct 40 are forcibly exhausted outside the vehicle. Air streams 25 and 26 can be formed. And the temperature inside an instrument panel and the temperature of an instrument panel surface can be lowered | hung and by extension, the thermal radiation heat energy to the vehicle interior can be reduced. The component 45 disposed inside the instrument panel having a relatively large heat capacity is cooled by the formation of the air flow 43.

The method of using the vehicle ventilator 300 is the same as that of the vehicle ventilator 100. By closing the open / close damper 6, air conditioning operation using HVAC is possible. By opening the open / close damper 6, ventilation operation is performed, and high-temperature air near the top panel of the instrument panel 3 and high-temperature accumulated air in the differential duct 40 can be forcibly exhausted outside the vehicle. Further, by applying the flowchart shown in FIG. 5 to the vehicle ventilator 300, it is possible to cool down the in-vehicle temperature at the time of parking.
(Ventilation control method when boarding)

  Next, a method for lowering the in-vehicle temperature by operating the vehicle ventilator according to the embodiment when the passenger gets into the parked vehicle will be described. Although it can operate in any of the vehicle ventilators shown in FIG. 1, FIG. 2, or FIG. 7, the vehicle ventilator shown in FIG. 1 will be described as an example. Moreover, the flowchart for demonstrating the action | operation of the vehicle ventilation apparatus at the time of boarding in FIG. 9 is shown. First, the engine operating state is determined from the engine ECU 32 (step S21), and if it is off, it is determined whether a vehicle door lock key release signal or a ventilation start signal is input to the receiving means 36 (step S22). If no vehicle door lock key release signal or ventilation start signal is detected, the process returns to step S1. When the vehicle door lock key release signal or the ventilation start signal is detected, it is determined whether or not the interior temperature is, for example, 40 ° C. or more based on the value of the interior air sensor 31 (step S23). When the vehicle interior temperature is less than 40 ° C., the ventilation blower 14 remains off (step S28), and the process returns to step S1. When the vehicle interior temperature is 40 ° C. or higher, the intake door 7 is set to the REC mode by the inside / outside air switching operation means 35 of the intake door 7 in order to prevent air from flowing into the HVAC (step S24). Further, the opening / closing damper 6 is opened by the opening / closing means 33 (step S25). Next, the fan of the ventilation blower 14 is rotated by the operating means 34 (step S26). When the ventilation blower 14 is operated, as shown in FIG. 1, high-temperature air staying in the internal space 4 of the instrument panel 3 is formed as an air flow 24 toward the suction port 14 a of the ventilation blower 14. The air discharged from the ventilation blower 14 forms an air flow 25 in the ventilation flow path 5 and flows into the outside air introduction flow path 9. Since the intake door 7 is in the REC mode, an air flow 26 is formed in the outside air introduction flow path 9, and high temperature air is discharged from the outside air intake port 20. Next, it is determined whether the operation time of the ventilation blower 14 is 5 minutes or less or exceeds 5 minutes (step S27). If the operation time is 5 minutes or less, the process returns to step S1. On the other hand, if the operating time exceeds 5 minutes, the ventilation blower 14 is turned off (step S28). Then, the process returns to step S1.

  When the engine is turned on (step S21), it is determined whether the air conditioner is on or off based on air conditioner information from an air conditioner ECU (not shown) (step S29). When the air conditioner is on, the fan of the ventilation blower 14 is turned off by the operating means 34 (step S30). Further, the opening / closing means 6 is closed by the opening / closing means 33 (step S31). Thereby, it becomes an air-conditioning driving | operation which can be either REC mode or fresh mode. By closing the open / close damper 6, the outside air can be prevented from entering in the REC mode, and the inside air can be prevented from entering in the fresh mode. Then, the process returns to step S1.

  In step S27, the operation time of the ventilation blower 14 is determined to be 5 minutes, but may be arbitrarily set between 1 and 5 minutes. As will be described later, the interior temperature can be lowered by ventilation for about one minute. Furthermore, since the operation time is about 5 minutes, the burden on the battery is small. In this ventilation, high-temperature air in the vicinity of the head of the vehicle is agitated with air in a low-temperature part such as a foot, and the temperature near the face, which is a very sensitive part in the human body, can be lowered. Moreover, the surface temperature of the steering wheel and the like is significantly reduced, so that it can be comfortably operated immediately after getting on. Furthermore, air conditioning begins to work quickly. About this operating condition, since a passenger is not known from the exterior of a vehicle, it does not give discomfort. In addition, when detecting a vehicle door lock key cancellation | release signal or a ventilation start signal and operating a ventilator, you may perform control which opens a door window simultaneously.

  In FIG. 9, it is determined whether a vehicle door lock key release signal or a ventilation start signal is input to the receiving means 36 (step S22). In this step, whether or not the door lock is simply released is determined. It is also possible to judge. That is, the ventilator may be operated when the door lock is released.

  In this case, as in step S23 of FIG. 9, it is preferable to operate the ventilator if the vehicle interior temperature is equal to or higher than the specified temperature (in the case of FIG. 9, 40 ° C. or higher). It simply has a specified value P. Moreover, the presence or absence of operation of the ventilator may be determined by comparing and referring to the vehicle interior temperature and the outside air temperature. By determining the operation timing based on both the vehicle interior temperature and the outside air temperature, it is possible to cope with the phenomenon of hot in the middle period. Furthermore, it is good also as judging the operation | movement availability of a ventilator using the difference temperature of vehicle interior temperature and external temperature. By using this control, ventilation is possible when necessary regardless of whether it is heating, intermediate temperature, or hot weather. Even when the interior of the vehicle is supercooled during heating, the temperature can be expected to rise due to ventilation, and during hot weather, it can be efficiently operated when necessary. In particular, regarding the differential temperature Q shown here, 2 to 5 ° C. is generally desirable, but is not particularly limited.

  In the vehicle ventilator according to the present invention, it is preferable that the control means has a maximum operating time of 5 minutes after the operation of the vehicle ventilator. In this control and apparatus, not only for 5 minutes before boarding but before or after boarding, the maximum effect is measured for 5 minutes.

(Example 1)
Using the vehicle ventilation device 300 shown in FIG. 7, the temperature rise of the in-vehicle temperature was evaluated. The ventilation blower was activated when the interior temperature reached 45 ° C or higher. In a wind tunnel experiment under hot weather conditions, the air volume of the ventilation blower was set to 50 m ³ / hr, and the inside of the vehicle was ventilated as Example 1. Here, the ventilation volume of 50 m ³ / hr corresponds to a ventilation frequency of 10 times / hr. Here, the frequency of ventilation refers to the number of times indoor air is replaced per unit time. Next, in a wind tunnel experiment under hot weather conditions, the air volume of the ventilation blower was set to 0 m ³ / hr, and the case where the interior of the vehicle was not ventilated was designated as Comparative Example 1. FIG. 8 shows the relationship between the in-vehicle temperature and the elapsed time. Referring to FIG. 8, Example 1 is about 8 ° C. cooler than Comparative Example 1 when the elapsed time is 150 minutes. Therefore, by operating the ventilation blower and forcibly exhausting the staying air in the differential duct and the near-instrument air sucked from the defrost and the side defrost to the outside of the vehicle, it is possible to suppress an increase in the in-vehicle temperature. Similar results were obtained even when the vehicle ventilator 100 shown in FIG. 1 was used.

(Example 2)
Using the vehicle ventilation device 300 shown in FIG. 7, the cool-down of the in-vehicle temperature was evaluated. Example ² shows a case where the air temperature of the ventilation blower was set to 50 m ³ / hr in a wind tunnel experiment under a hot weather condition of 35 ° C., humidity 70%, solar radiation 0.8 kW / m ² and left for 2 hours, and the interior was cooled down by ventilation did. FIG. 10 shows the change over time in the vehicle interior temperature. FIG. 11 shows the change with time in the handle surface temperature. From FIG. 10, it was found that the temperature inside the vehicle changed from 55.3 ° C. to 52.2 ° C. in about 1 minute, and decreased by 3.1 ° C. Furthermore, in about 5 minutes, it was found that the in-vehicle temperature was changed from 55.3 ° C. to 51.2 ° C. and decreased by 4.1 ° C. Further, it was found from FIG. 11 that the handle surface temperature was changed from 68.8 ° C. to 64.7 ° C. in about 1 minute, and decreased by 4.1 ° C. Further, in about 5 minutes, it was found that the handle surface temperature changed from 68.8 ° C. to 61.5 ° C., and decreased by 7.3 ° C. Similar results were obtained even when the vehicle ventilator 100 shown in FIG. 1 was used.

It is the schematic which shows one form of the vehicle ventilation apparatus which concerns on this embodiment. It is the schematic which shows one form of the ventilator for vehicles at the time of providing a ventilation suction duct. It is a conceptual diagram which shows an air flow when carrying out an air-conditioning driving | operation using the vehicle ventilator which concerns on this embodiment as an air conditioner. It is a conceptual diagram which shows an air flow when carrying out the ventilation driving | operation using the vehicle ventilator which concerns on this embodiment as a ventilator. It is a flowchart which shows the action | operation of the vehicle ventilation apparatus which concerns on this embodiment. It is the schematic which shows the air flow in a vehicle when operating the vehicle ventilator which concerns on this embodiment, Comprising: (a) is the air flow at the time of an air-conditioning driving | operation, (b) is the air flow at the time of ventilation blower operation | movement. Show. It is the schematic which shows the 2nd form of the vehicle ventilation apparatus which concerns on this embodiment. It is a graph which shows the relationship between vehicle interior temperature and elapsed time when the temperature rise of vehicle interior temperature is evaluated using the vehicle ventilation apparatus 200 which concerns on 2nd Embodiment, and the air volume of a ventilation blower is 50 m < ³ > /. The case where it is set to hr (Example 1) and the case where the air volume of the ventilation blower is set to 0 m ³ / hr (Comparative Example 1) are shown. It is a flowchart which shows an example of the action | operation of the vehicle ventilation apparatus at the time of boarding. The time-dependent change of the vehicle interior temperature in Example 2 was shown. The time course change of the handle surface temperature in Example 2 is shown.

Explanation of symbols

1, case 2a, 2b, 2c, ventilation flow path 3, instrument panel 4, internal space 5, ventilation flow path 6, open / close damper 7, intake door 8, in-vehicle air inlet 9, outdoor air introduction flow path 10, internal / external air switching box 11, air conditioning blower 12, filter unit 13, evaporator 14, ventilation blower 14 a, suction port 20, outside air suction ports 21, 22, 24, 25, 26, 27, 43, 44 Air flow 28, opening 28
29, ventilation suction duct 30, control means 31, inside air sensor 32, engine control device (engine ECU)
33, opening / closing means 34, operating means 35, inside / outside air switching operating means 36, receiving means 40, differential duct 41, defrost 42, side defrost 45, component parts 100, 200, 300, vehicle ventilation system

Claims (15)

An inside / outside air switching box having an outside air introduction passage communicating with the outside air inlet, an inside air inlet, and an intake door for switching between introduction of inside and outside air, and the inside / outside air switching box from the inside / outside air switching box to the outlet in the vehicle An air flow path that forms an air flow toward the air flow path, an air-conditioning blower that is provided in the air flow path and that forms the air flow, and is disposed in an internal space of a vehicle instrument panel, and a suction port is the instrumental A ventilation blower which is directed to the panel side and arranged near the inner wall surface of the instrumental panel , one end communicates with the discharge port of the ventilation blower, and the other end communicates with the outside air introduction flow path a ventilation passage comprises an opening and closing damper provided該換air flow path, and further enter the engine operation-stop information from the engine control unit, the inside temperature information from the inside air sensor oN Then, an on / off signal is output to the ventilation blower operating means, an open / close signal is output to the open / close damper opening / closing means, battery voltage information is input, and the inside / outside air switching operation of the intake door is performed. Control means for outputting a signal for setting the inside air introduction mode or a signal for setting the outside air introduction mode to the means, the control means includes information that the engine is stopped, information that the vehicle interior temperature is equal to or higher than a predetermined temperature, and When information indicating that the battery voltage is greater than or equal to a predetermined value is input, an ON signal is output to the ventilation blower operating means, an open signal is output to the open / close damper opening means, and the intake door A vehicle ventilator which outputs a signal for setting an inside air introduction mode to the inside / outside air switching operation means .   The vehicle ventilator according to claim 1, wherein a suction port of the ventilation blower is directed to a portion of the instrument panel that receives solar radiation.   The vehicle ventilation device according to claim 1 or 2, wherein the suction port is disposed at a position where a ventilation resistor is not interposed between the suction port of the ventilation blower and the inner wall surface of the instrumental panel.   3. The vehicle according to claim 1, further comprising a ventilation suction duct having one end connected to a suction port of the ventilation blower and an opening at the other end disposed near an inner wall surface of the instrument panel. Ventilation device. Inlet of the ventilating blower, or opening of the other end of the ventilation suction duct according to claim 1, 2, 3, characterized in that a suction port for sucking the retention air of the inner space of the instrument panel or 5. A vehicle ventilation device according to 4 . An inside / outside air switching box having an outside air introduction passage communicating with the outside air inlet, an inside air inlet, and an intake door for switching between introduction of inside and outside air, and the inside / outside air switching box from the inside / outside air switching box to the outlet in the vehicle An air flow path that forms an air flow toward the air flow path, an air-conditioning blower that is provided in the air flow path and that forms the air flow, and is disposed in an internal space of the instrument panel of the vehicle, and is located under the top panel of the instrument panel. A ventilation blower having a suction port in communication with the arranged differential duct, a ventilation channel having one end communicating with the discharge port of the ventilation blower, and the other end communicating with the outside air introduction channel; and an opening and closing a damper provided in the ventilation passage, further from the engine control unit inputs the engine operation-stop information, enter the interior temperature information from the inside air sensor, to the actuating means of the ventilation blower A signal for turning on or off, outputting an opening or closing signal to the opening / closing means of the opening / closing damper, inputting battery voltage information, and a signal for setting an inside air introduction mode to the inside / outside air switching operation means of the intake door, or Control means for outputting a signal for setting the outside air introduction mode, the control means is information that the engine is stopped, information that the vehicle interior temperature is equal to or higher than a predetermined temperature, and battery voltage is equal to or higher than a predetermined value When the above information is input, an ON signal is output to the ventilating blower operating means, an open signal is output to the open / close damper opening / closing means, and the inside / outside air switching operating means of the intake door is introduced to the inside air A vehicle ventilator that outputs a signal for setting a mode . The control means outputs a closing signal to the opening / closing means of the opening / closing damper when information indicating that the engine is in operation is input. Or the ventilation apparatus for vehicles of 6 . A door unlock signal is input, an on / off signal is output to the ventilation blower operating means, an open / close signal is output to the open / close damper open / close damper, and the intake / external air switching operation of the intake door is performed. A control means for outputting a signal for setting the inside air introduction mode or a signal for setting the outside air introduction mode to the means;
The control means outputs an ON signal to the operation means of the ventilation blower, outputs an open signal to the opening / closing means of the opening / closing damper, and receives an inside / outside of the intake door when the door lock release signal is inputted. vehicle ventilating device according to claim 1,2,3,4,5,6 or 7, wherein the outputting the signal to inside air introduction mode to air switching actuation means. 9. The vehicle ventilator according to claim 8 , wherein the control means compares and refers to a vehicle interior temperature and an outside air temperature in order to determine whether the vehicle ventilator can be operated when the door lock is released. The vehicle ventilator according to claim 8 or 9 , wherein the control means operates the vehicle ventilator when the in-vehicle temperature is equal to or higher than a specified temperature. 11. The vehicle ventilator according to claim 8, 9 or 10 , wherein the control means determines whether or not the vehicle ventilator can be operated using a difference temperature between an in-vehicle temperature and an outside air temperature. The control means has a maximum operating time of 5 minutes after the operation of the vehicle ventilator, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 or 11 The vehicle ventilation device described. Enter engine operation / stop information from the engine control unit,
Input car temperature information from inside air sensor,
Output an on or off signal to the ventilation blower operating means,
Output an open / close signal to the open / close means of the open / close damper,
And a control means for outputting a signal for setting the inside air introduction mode or a signal for setting the outside air introduction mode to the inside / outside air switching operation means of the intake door;
Receiving means for inputting information indicating that a passenger approaches the vehicle, and outputting the information to the control means; and
The control means inputs information indicating that the engine is stopped and information that the vehicle interior temperature is equal to or higher than a predetermined temperature, and inputs information indicating that a passenger has approached the vehicle from the receiving means. When this is done, an ON signal is output to the ventilation blower operating means, an open signal is output to the open / close damper open / close means, and an internal air introduction mode is set to the inside / outside air switching operating means of the intake door. The vehicle ventilator according to claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 or 12, wherein the output is output. The information indicating that the passenger has approached the vehicle is a vehicle door lock key release signal or / and a ventilation start signal transmitted from a vehicle key such as a smart key or a remote control key, or a mobile phone, PHS, etc. 14. The vehicle ventilator according to claim 13, which is a vehicle door lock key release signal or / and a ventilation start signal transmitted from the communication terminal. Said receiving means, for 1 to 5 minutes before the occupant gets into the vehicle, according to claim 13 or characterized in that it has a coverage capable of receiving information indicating that the occupant comes close to the vehicle 14. A vehicle ventilation device according to 14 .

Images