JP2012116404A - Atmospheric pressure control air conditioner for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioner suitable for atmospheric pressure control for a vehicle.SOLUTION: An atmospheric pressure control air conditioner for a vehicle controls atmospheric pressure in a cabin having an airtight structure, and includes a cabin inside air state sensor for measuring a state in the air in the cabin, an outside air state sensor for measuring a state of outside air, a supercharging air blower for taking sucked outside air in the cabin, an exhaust movable damper for exhausting a part of the air in the cabin to the outside, and a control part for controlling the supercharging air blower and the exhaust movable damper based on a measuring result of the cabin inside air state sensor and the outside air state sensor, and prevents reduction in pressure of the air in the cabin.

Description

  The present invention relates to an air conditioner that controls the air pressure in a passenger compartment of an automobile, a railway vehicle, or the like.

It is known that when the low pressure passes due to meteorological conditions, the vehicle is moving at high speed, the venturi effect occurs, the altitude changes, the tunnel passes, etc. Yes. In such a pressure drop state, the driver's (driver's) thinking ability and mental and physical ability, including judgment ability, may be reduced, leading to delays in judgment, operational mistakes, and falling asleep, leading to the occurrence of an accident. .
Also, in order to provide a comfortable interior environment for passengers and passengers, it is desirable to maintain the atmospheric pressure at a standard atmospheric pressure while avoiding a low atmospheric pressure state.

Patent Document 1 discloses a house indoor pressure adjustment system. The indoor air pressure can be adjusted, and the air pressure in the whole room or a specific living room is kept at a high pressure regardless of the fluctuation of the atmospheric pressure or the change in weather.
Patent Document 2 discloses a vehicle air conditioner. It is a vehicle air conditioner that can prevent a passenger from feeling uncomfortable due to a change in air pressure in a passenger compartment.
Patent Document 3 discloses a snooze driving prevention device. It is a device that prevents the driver's drowsy driving state by air-conditioning the vehicle interior space, detects the atmospheric pressure in the vehicle interior, and introduces outside air if it is below a threshold value.

JP 2002-071177 A JP 2004-276883 A Japanese Patent Laid-Open No. 06-191261

The inventor of the present invention makes proposals in several points in order to provide a configuration for maintaining the atmospheric pressure in the passenger compartment in a standard state.
An object of the present invention is to provide an air conditioner suitable for vehicle pressure control.

In order to solve the above-described problems, the air pressure control air conditioner for a vehicle according to the present invention has the following configuration.
An air pressure control air conditioner for a vehicle that controls the air pressure in a vehicle interior having an airtight structure, the vehicle interior air state sensor that measures a state in the air in the vehicle interior, an outside air state sensor that measures the state of the outside air, and an outside air Based on the measurement results of the supercharging blower that takes in the vehicle interior, the exhaust movable damper that exhausts a part of the air in the vehicle interior to the outside, the vehicle interior air condition sensor, and the outside air condition sensor, And a control unit that controls the movable damper and the supercharging blower, and prevents a decrease in the pressure of the air in the passenger compartment.

  A temperature adjusting unit that adjusts the temperature of the outside air that has been taken in; and an inside air circulating movable damper that circulates air in the vehicle interior to the temperature adjusting unit, wherein the control unit includes the air condition sensor in the vehicle interior According to this measurement result, the opening and closing of the exhaust movable damper and the inside air circulating movable damper are controlled, and the capacity of the supercharging blower is controlled to suppress the energy consumption of the temperature adjustment unit. It is also possible to separately install a blower for circulating the air in the vehicle in the air conditioning path.

  A window / door opening / closing operation detecting device for detecting opening / closing operation of the window or door of the vehicle, and a window / door opening / closing locking device for locking the window and door opening / closing operation of the vehicle according to the control of the control unit. When the window / door opening / closing operation detecting device detects an opening / closing operation of the window or door, the control unit detects the measurement result of the vehicle interior air condition sensor and the measurement result of the outside air condition sensor or the pressure outside the vehicle interior and the exterior of the vehicle. According to the result of the mechanism for detecting the difference (pressure difference sensor provided on the partition wall), the exhaust movable damper and the supercharging blower are controlled until the pressure difference between the inside and the outside becomes a predetermined magnitude or less, and until then, the window -A door opening / closing lock device can be used.

  It is desirable that the controller controls the atmospheric pressure in the vehicle according to the environment in which the vehicle is operated.

  When the low pressure state continues for a long time, the control unit desirably adjusts the set pressure in the vehicle in consideration of the degree to which the human body adapts to the low pressure state.

  It is desirable to further include a pressure drop warning device for notifying the driver of the vehicle of the pressure drop and giving a warning, and for the controller to give a warning to the driver by the pressure drop warning device.

According to the configuration of the present invention, the following effects can be expected.
1. Prevents the driver's (driver) 's mental and physical deterioration.
2. Keep passengers and passengers comfortable.

1 is a diagram illustrating a main configuration of a vehicle pressure control air conditioner according to the present invention (Example 1). It is a figure which shows the Example couple | bonded with the temperature control unit (Example 2). It is a figure which shows the Example couple | bonded with the window and door opening / closing locking device (Example 3). It is a figure which shows the Example which performs control according to environments, such as a highland (Example 4). (Example 5) which shows the Example which adjusts atmospheric | air pressure based on the log | history which the low-pressure state continued. It is a figure which shows the Example which provided the atmospheric | air pressure fall warning apparatus (Example 6).

Embodiments of the present invention will be described below.
The interior of the car body is airtight, air is taken from the outside of the car body via a movable damper (air supply movable damper) (or running air is taken in), passed through a filter, and then passed through a blower (which can be supercharged) Then, it passes through the heat exchanger (heater unit / cooling unit) and supplies it to the car. However, the arrangement of the filter, blower, heater unit and cooling unit is not particular to the order. Moreover, the method of mixing with external air after passing through a heat exchanger etc. may be used.
A sensor that measures atmospheric pressure inside the vehicle or inside and outside the vehicle is installed, and the air pressure inside the vehicle is always standardized by operating the air supply movable exhaust and exhaust movable dampers or by varying the capacity of the blower. Maintain at atmospheric pressure. Or close to the standard pressure according to the supercharging ability and the strength of the vehicle body.
It may be in a high-pressure state above the standard pressure so as not to affect the human body.
In the case of an automobile, the air supply movable damper is usually installed, whereas in the case of a railway vehicle, the air supply movable damper can be omitted.

  When using at high altitudes where the atmospheric pressure is always low, changes in atmospheric pressure are monitored by sensors outside the vehicle and automatically adjusted to a pressure suitable for the environment. Alternatively, set the altitude manually.

  When adjusting the temperature of the outside air with the air conditioning unit, air pollution due to human breathing etc. in the car is monitored with a sensor, the exhaust movable damper and the air supply movable damper open / closed degree control, the internal circulation movable damper open / close control, or the blower ability By controlling, the conditioned air in the vehicle is not exhausted wastefully. This reduces energy consumption by suppressing the operation of the refrigerant compressor, which consumes a large amount of power.

When the room is pressurized, the window glass is pressed against the window frame, making it difficult to open. Also, when opening the door, there is a risk that it will open vigorously.
To prevent this, for example, the switch operation that opens the window in the case of a power window is detected, and the action of putting a hand on the door knob in the case of a door is detected. A structure that opens the window or opens the door after it is lost. When the pressure difference is a predetermined magnitude, it may be configured not to open.

In the case of a door, a shock absorber such as a hydraulic damper that controls the speed on the open side can be provided.
Providing shock absorbers such as speed control to the open side and hydraulic dampers can also be expected to prevent the door from opening suddenly when strong wind is blowing from the rear.

When opening the door of a railway vehicle's elevator door, basically you only have to consider when you stop at the station and open the door, so if the vehicle's traveling speed falls below the set speed, pressurize It can be dealt with by releasing the state.
It is also possible to release the pressurized state by manual operation of the crew. It is desirable for safety management that the door is not opened when there is a pressure difference.

  Next, examples 1 to 6 will be described with reference to FIGS.

  FIG. 1 is a diagram showing a main configuration of an atmospheric pressure control air conditioner for a vehicle according to the present invention in the first embodiment. Fig.1 (a) shows the external appearance of a motor vehicle. The right is the front. Here, a passenger car is taken as an example. Commercial vehicles such as trucks, construction vehicles, and railway vehicles may also be used.

  FIG.1 (b) is a figure which shows the whole structure in the case of providing a vehicle atmospheric | air pressure control air conditioner in a vehicle interior. The passenger compartment 1 is configured with a high airtightness. The air density in the closed state is increased in a portion where the outside air such as a door / window (not shown in FIG. 1 is drawn) is taken in and out.

  The vehicle compartment 1 is provided with an air supply duct 20 that is a duct for taking in outside air and an exhaust duct 25 that is a duct that discharges the air in the vehicle compartment 1 to the outside in the same manner as the vehicle compartment 1. An air supply movable damper 21 is provided in the vicinity of the outside air intake port of the air supply duct 20, and an exhaust exhaust movable damper 24 is provided in the exhaust duct 25. These two movable dampers are dampers capable of controlling the degree of opening and closing by driving a motor or the like, and in the closed state, the airtightness is as high as that of the passenger compartment 1. Further, it is desirable that these two movable dampers are capable of adjusting the degree of opening stepwise (or continuously) as well as simply opening and closing.

  A vehicle interior state sensor 11 is provided in the vehicle interior 1, and an outdoor air state sensor 12 is provided in the vicinity of the outside air intake port of the air supply duct 20. These sensors can detect at least the atmospheric pressure. In addition, it is desirable to detect oxygen concentration, carbon dioxide concentration, and the like.

  In the middle of the air supply duct 20, an air filter 32 and a supercharger blower 31 are provided. When the air supply movable damper 21 is open, outside air taken in via the air filter 32 is supplied to the supercharger blower 31. Is sent into the passenger compartment 1. The opening / closing of the air supply movable damper 21, the opening / closing of the exhaust movable damper 24, and the operation of the supercharging blower 31 are performed under the control of the control unit 90. That is, if the vehicle interior air condition sensor 11 monitors the air pressure in the vehicle interior 1 and detects that it has dropped below the standard air pressure, the control unit 90 opens the air supply movable damper 21 based on that, and the supercharging blower 31 is operated. At this time, referring to how much the outside air pressure is measured by the outside air state sensor 12 and also considering the limit of the capacity of the supercharger 31, the controller 90 controls the air supply movable damper 21. Adjust the degree of opening. When the atmospheric pressure in the passenger compartment 1 returns to the standard state, the control unit 90 closes the air supply movable damper 21 and stops the supercharging blower 31. Further, in order to prevent the concentration of carbon dioxide in the air in the passenger compartment from being increased due to the breathing of the driver (driver) and passengers, and the oxygen concentration is reduced, the exhaust blower 31 can be operated while the supercharger blower 31 is operated. Control that opens the damper 24 slightly is also required.

  FIG. 2 is a diagram showing a second embodiment combined with a temperature adjustment unit. Elements common to the first embodiment are denoted by the same reference numerals. Different parts will be described. In Example 2, the inside air circulation duct 23 that circulates the air in the passenger compartment 1 to the front surface of the supercharging blower 31 was provided, and the inside air circulation movable damper 22 was provided therein. Further, the temperature adjustment unit 30 is provided between the supercharging blower 31 and the passenger compartment 1. The inside air circulation movable damper 22 is a damper having the same function as the air supply movable damper 21 and is controlled by the control unit 90 so as to be closed when the air supply movable damper 21 is opened. Further, when the inside air circulation movable damper 22 is opened, the supply air movable damper 21 is controlled by the control unit 90 so as to be closed.

  The temperature adjustment unit 30 adjusts the temperature of air, and includes a heat exchanger, an evaporator, a heater unit, and the like. By controlling the temperature adjustment unit 30, the supercharging blower 31, the inside air circulation movable damper 22, and the air supply movable damper 21 by the control unit 90, the temperature of the air in the passenger compartment 1 is efficiently controlled and energy consumption is suppressed. It is possible to warm up or cool down.

  FIG. 3 is a view showing Example 3 combined with a window / door opening / closing lock device. Elements common to the first embodiment are denoted by the same reference numerals. The difference from the first embodiment is that the driver / passenger detects that the driver or passenger is going to open / close the window or door, and notifies the control unit 90 of the window / door opening / closing operation detection device 41 and the control unit 90 And a window / door opening / closing locking device 42 for locking the opening / closing operation of the window or door. When the difference between the passenger compartment 1 and the outside air pressure is larger than a predetermined value, there may be a risk in opening and closing the windows and doors. Therefore, when the difference between the air pressure by the vehicle interior air condition sensor 11 and the air pressure by the outside air condition sensor 12 is greater than or equal to a predetermined value, the window / door opening / closing operation detecting device 41 detects the window / door opening / closing operation of the driver or passenger. Then, the control unit 90 operates the window / door open / close lock device 42 so that the window / door cannot be opened / closed immediately. At the same time, by controlling the exhaust movable damper 24, the air supply movable damper 21, and the supercharging blower 31, the air pressure in the passenger compartment 1 is brought close to the external air pressure. When the atmospheric pressure difference between the inside and outside falls below a predetermined value, the control unit 90 releases the locked state of the window / door opening / closing locking device 42 so that the window or door can be opened / closed.

  FIG. 4 is a diagram illustrating a fourth embodiment that performs control according to an environment such as a highland. FIG. 4B shows the main configuration. The same reference numerals are used for the common elements with the first embodiment. The difference is that it has an altimeter 13. Here, the altimeter 13 is a device that measures the altitude of the place where the vehicle currently exists. For example, an altimeter that calculates the altitude by continuously measuring the inclination of the vehicle body from a known altitude location and integrating the travel distance can be considered. Further, the latitude and longitude may be obtained by a GPS device or the like, and the altitude of the place may be obtained by referring to a table. In the simplest case, the atmospheric pressure can be measured and converted to a high degree.

FIG. 4A shows the configuration of the control unit 90 configured by a so-called microcomputer (processing device 99). In the bus of the processing device 99, a memory 98 that is a work area of the processing device 99, a program storage device 97 that stores a program of the processing device 99, and an interface unit (not shown) for communication with an external peripheral device. ), An altitude history recording device 91 is provided. The processing device 99 works so as to perform processing corresponding to the altitude, such as when the vehicle is traveling on high ground. Despite traveling in the highland, the energy consumption becomes too large if the same treatment as in the lowland is performed. Also, if you are at high altitude for a long time, it can be covered to some extent by human adaptation. Therefore, when traveling in the highland for a long time, the energy consumption is suppressed by shifting the standard atmospheric pressure to the lower side.
The same applies not only when traveling in the highlands, but also when a person living in the highlands uses the vehicle.
When this vehicle is equipped with a navigator, the altitude of the road passing through to the destination can be predicted in advance in conjunction with the navigator system, and the standard atmospheric pressure can be set accordingly.

  FIG. 5 is a diagram illustrating a fifth embodiment in which the atmospheric pressure is adjusted based on a history of low pressure conditions continuing. As shown in FIG. 5B, most of the hardware configuration is common to the first embodiment shown in FIG. 1, and the same reference numerals are used for common elements. FIG. 5A shows the configuration of the control unit 90 in detail. The same reference numerals are used for the same elements as in FIG. In the fifth embodiment, the atmospheric pressure history recording device 92 is provided to record the atmospheric pressure measured by the vehicle interior air condition sensor 11 at a predetermined time interval. In addition, an air pressure adaptation data recording device 93 is provided, which records information associating how long the atmospheric pressure state lasts for how long the standard person can adapt to it. Based on the information recorded in the atmospheric pressure history recording device 92, the processing device 99 refers to the information in the atmospheric pressure adaptation data recording device 93 and shifts the atmospheric pressure (standard atmospheric pressure) that should keep the air in the passenger compartment 1. Thereby, the operation time of the supercharging blower 31 can be shortened and energy consumption can be suppressed.

  FIG. 6 is a diagram showing a sixth embodiment in which an atmospheric pressure drop warning device 61 is provided. It is important for the driver to know the fact that the air pressure has decreased in order to prevent accidents. In the sixth embodiment, the fact that the pressure is lowered and the fact that the supercharged fan is operated are notified by lighting the lamp at a position that is easy for the driver to see, and the device for that purpose is the pressure drop warning device. In the simplest case, this can be notified by turning on and off the lamp. It is also possible to display numerical values such as data obtained by digitizing the pressure inside and outside the vehicle interior and the value currently set as the pressure value to be retained so that the driver can understand it on a liquid crystal screen or the like. Furthermore, the opening / closing degree of each movable damper, the state of the temperature adjustment unit, the temperature inside and outside the vehicle interior, and the like may be displayed together. ,

  INDUSTRIAL APPLICABILITY The present invention can be used for an air conditioner in a vehicle interior of a vehicle such as an automobile vehicle, a construction work vehicle, and a railway vehicle. It can be used in the cab. It can also be used in guest rooms.

DESCRIPTION OF SYMBOLS 1 Car interior 10 Vehicle pressure control air conditioner 11 Car interior air condition sensor 12 Outside air condition sensor 13 Altimeter 20 Air supply duct 21 Air supply movable damper 22 Inside air circulation movable damper 23 Inside air circulation duct 24 Exhaust movable damper 25 Exhaust duct 30 Temperature adjustment Unit 31 Supercharging Blower 32 Air Filter 41 Window / Door Open / Close Operation Detection Device 42 Window / Door Open / Close Lock Device 61 Air Pressure Decrease Warning Device 90 Control Unit 91 Altitude History Recording Device 92 Air Pressure History Recording Device 93 Air Pressure Adaptation Data Recording Device 97 Program 98 Memory 99 Processing device

Claims (6)

An air pressure control air conditioner for a vehicle that controls the air pressure in a passenger compartment having an airtight structure,
A vehicle interior air condition sensor for measuring the state of the vehicle interior in air;
An outside air condition sensor for measuring the outside air condition;
A supercharger blower for taking outside air into the vehicle interior;
An exhaust movable damper that discharges part of the air in the vehicle interior to the outside;
A control unit that controls the supercharger blower and the exhaust movable damper based on the measurement results of the vehicle interior air condition sensor and the outside air condition sensor, and prevents a decrease in air pressure in the vehicle interior Air pressure control air conditioner for vehicles. The air pressure control air conditioner for a vehicle according to claim 1,
A temperature adjustment unit that adjusts the temperature of the air taken in from the outside,
An internal air circulation duct for circulating the air in the vehicle interior to the temperature adjustment unit;
An inside air circulation movable damper provided in the inside air circulation duct for opening and closing the inside air circulation duct;
Further comprising
The control unit controls the opening and closing of the exhaust movable damper and the inside air circulating movable damper according to the measurement result of the vehicle interior air condition sensor, and also controls the capacity of the supercharging blower, so that the energy consumption of the temperature adjustment unit The air pressure control air conditioner for vehicles characterized by suppressing. The air pressure control air conditioner for a vehicle according to claim 1,
A window / door opening / closing operation detecting device for detecting opening / closing operation of the window or door of the vehicle;
A window / door open / close lock device that locks the window and door open / close operation of the vehicle according to the control of the control unit;
When the window / door opening / closing operation detecting device detects an opening / closing operation of the window or door, the control unit detects a difference between the internal and external pressures according to the measurement result of the vehicle interior air condition sensor and the measurement result of the outside air condition sensor. The air pressure control air conditioner for vehicles, wherein the supercharger blower is controlled until a predetermined size or less, and the window / door opening / closing lock device is operated until then. The air pressure control air conditioner for a vehicle according to claim 1,
The said control part controls the atmospheric | air pressure control air conditioner for vehicles according to the atmospheric | air pressure in a vehicle according to the environment where the said vehicle is operate | moved. The air pressure control air conditioner for a vehicle according to claim 1,
When the low pressure state continues for a long period of time, the control unit adjusts the set pressure in the vehicle in consideration of the degree of adaptation of the human body to the low pressure state. The air pressure control air conditioner for a vehicle according to claim 1,
A pressure drop warning device for notifying the vehicle driver of the fact of the pressure drop and giving a warning;
The control unit gives a warning to the driver by the atmospheric pressure drop warning device.

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