JP2009132277A - Inspection device of air conditioning system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To automatically inspect whether or not an opening/closing device for opening/closing a passage for passing air conditioned air can be normally operated from a first position to a second position of both ends of an operation range, and to achieve a highly accurate inspection of the operation of the opening/closing device, regardless of skillfulness of an operator. <P>SOLUTION: This inspection device is provided with the opening/closing device for opening/closing the passage for passing air conditioned air and a driving means for driving the opening/closing device. The inspection device is provided with an air conditioning system inspection means capable of executing an air conditioning system inspection process at the time of manufacturing the air conditioning system or at a maintenance time after mounting the air conditioning system on a vehicle, and an opening/closing device inspection means for executing an opening/closing device inspection process when power is supplied the next time when an execution instruction of the opening/closing device inspection process for inspecting whether or not the opening/closing device can be moved from the first position to the second position of both the ends of the operation range is set in the air conditioning system inspection process executed by the air conditioning system inspection means. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an inspection apparatus for an air conditioning system, and more particularly to an inspection apparatus for an air conditioning system that can determine whether or not an opening / closing device that opens and closes a passage through which conditioned air passes through the air conditioning system can operate normally.

The vehicle is equipped with an air conditioning system in order to make the cabin environment comfortable and to prevent fogging and frosting of windows. The air conditioning system includes an opening / closing device that opens and closes a passage through which the conditioned air blown out from the air suction port through the air conditioning device to the vehicle interior, and includes a driving unit that drives the opening / closing device. The air-conditioning system opens and closes the passage through which the air-conditioning air passes by driving opening and closing devices such as an air mix damper, blow-off mode switching damper, suction port switching damper, etc. The air conditioning wind adjusted by the air conditioner is blown out into the passenger compartment, and heating, ventilation, and air conditioning are performed.
In the air conditioning system, a damper as an opening / closing device is arranged in a passage through which air-conditioned air formed by an air conditioning duct passes, and the passage is opened and closed by driving by an actuator as a driving means. If foreign matter such as debris or parts is caught in the operating range, the actuator may be locked.

Therefore, the conventional air conditioning system is equipped with a reverse rotation operation switch that reversely rotates the motor actuator that drives the air conditioning door, and when the motor actuator is locked, the reverse rotation operation switch rotates the motor reversely, There is something to cancel.
Japanese Utility Model Publication No. 61-33711

Also, in the conventional air conditioning system, a worm wheel is provided at the air passage opening / closing door, the worm provided on the output shaft of the motor actuator is directly meshed with the worm wheel, and the output shaft of the motor actuator is in contact with the surface of the worm wheel. Some brushes are provided to remove foreign matter and prevent locking due to foreign matter biting.
JP 2006-76419 A

However, in the air conditioning systems of Patent Documents 1 and 2, in order to detect that the drive means is locked, the operator operates switches such as “set temperature” and “MODE” to detect the drive means. It was necessary to drive the switchgear to a first position (for example, a fully closed position) and a second position (for example, a fully open position) at both ends of the operating range to check whether they are locked.
For this reason, since the conventional air conditioning system must be confirmed by the switch operation by the operator, man-hours for the inspection are required, and the inspection work depends on the skill of the operator. There is a problem that it is difficult to realize a high-accuracy inspection and that the inspection work is forgotten.

  This invention can automatically check whether the opening / closing device that opens and closes the passage through which the conditioned air passes can normally operate from the first position to the second position at both ends of the operating range. Therefore, it is an object of the present invention to realize a highly accurate inspection on the operation of the switchgear.

  The present invention includes an opening / closing device that opens and closes a passage through which air-conditioned air blown out from an air suction port through an air conditioning device to a vehicle interior, and an inspection device for an air conditioning system including a driving unit that drives the opening / closing device. Air conditioning system inspection means capable of performing an air conditioning system inspection process at the time of manufacturing the air conditioning system or during maintenance after the air conditioning system is mounted on a vehicle. When the execution instruction of the switchgear inspection process for checking whether the switchgear is movable from the first position to the second position at both ends of the operating range is set, the switchgear inspection process is performed at the next power-on. A switchgear inspection means is provided.

In the inspection apparatus for an air conditioning system according to the present invention, the opening / closing device that opens and closes the passage through which the conditioned air passes is normal from the first position (for example, fully closed position) to the second position (for example, fully open position) at both ends of the operating range. It is possible to automatically check whether it is ready to operate.
Thereby, the inspection apparatus of the air-conditioning system of this invention can implement | achieve a highly accurate test | inspection about the action | operation of an opening / closing device, without being influenced by a worker's skill.

  Embodiments of the present invention will be described below with reference to the drawings.

1 to 6 show an embodiment of the present invention. FIG. 1 is a block diagram of an air conditioner system inspection apparatus, FIG. 2 is a schematic configuration diagram of the air conditioner system inspection apparatus, FIG. 3 is an enlarged configuration diagram of an air mix damper portion of a passage, and FIG. 5 is a flowchart of the switchgear inspection process, and FIG. 6 is a time chart of the switchgear inspection process. In FIG. 2, reference numeral 1 denotes an air conditioning system mounted on a vehicle. The air conditioning system 1 is provided with a passage 3 formed by an air conditioning duct 2. An air conditioner 7 including a blower fan 4 that feeds air into the passenger compartment, an evaporator 5 that cools the air, and a heater core 6 that heats the air is disposed in the passage 3.
The blower fan 4 is driven by a blower fan motor 8 to supply the air in the passage 3 into the passenger compartment. The evaporator 5 is disposed in the passage 3 on the downstream side of the blower fan 4 and cools the air passing by the latent heat of vaporization of the refrigerant compressed by the compressor 9. The compressor 9 is connected to the engine via the electromagnetic clutch 10 and is driven by the driving force of the engine to compress the refrigerant. The heater core 6 is disposed in the passage 3 on the downstream side of the evaporator 5 and heats the air using the engine coolant supplied by the heater coolant passage 11 as a heat source. The heater coolant passage 11 is provided with a heater coolant valve 12 that supplies and shuts off engine coolant to the heater core 6.

The heater core 6 is arranged so as to be biased to one side in the width direction intersecting the flow direction of the passage 3. As a result, the passage 3 in the portion where the heater core 6 is disposed includes a heater core passage 13 in which the heater core 6 is disposed on one side in the width direction of the passage 3, and a bypass passage 14 parallel to the heater core passage 13 on the other side in the width direction of the passage 3. Formed in half. The heater core passage 13 and the bypass passage 14 merge on the downstream side of the heater core 6.
An air mix damper 15 that selectively opens and closes the heater core passage 13 and the bypass passage 14 is provided in the passage 3 divided into the heater core passage 13 and the bypass passage 14. The air mix damper 15 is driven by the air mix actuator 16 to selectively distribute the conditioned air through the heater core passage 13 and the bypass passage 14.
As shown in FIG. 1, the air mix actuator 16 includes an air mix motor 17 that drives the air mix damper 15, and an air mix damper position sensor 18 that detects the position of the air mix damper 15 from the operating position of the air mix motor 17. It has.

The passage 3 on the downstream side of the heater core 6 has a vent passage 19 for blowing the conditioned air of the air conditioner 7 into the passenger compartment, a foot passage 20 for blowing the conditioned air to the passenger's feet, and blows the conditioned air to the window. Branches to the defroster passage 21. The vent passage 19 is branched and opened to a center vent outlet 22 and side vent outlets 23 and 24. The foot passage 20 is open to the foot outlet 25. The defroster passage 21 opens to the defroster outlet 26.
A vent blowing mode switching damper 27 that opens and closes the vent passage 19 is provided in the passage 3 upstream of the vent passage 19. The foot passage 20 is provided with a foot blowing mode switching damper 28 for opening and closing the foot blowing port 26. The vent blowing mode switching damper 27 and the foot blowing mode switching damper 28 are connected to each other and driven by the blowing mode switching actuator 29, and the center vent outlet 22, the side vent outlets 23 and 24, the foot outlet 25, and the like. Open and close in conjunction.
As shown in FIG. 1, the blowing mode switching actuator 29 includes a blowing mode switching motor 30 that drives the venting blowing mode switching damper 27 and the foot blowing mode switching damper 28, and vents from the operating position of the blowing mode switching motor 30. A blowing mode switching damper position sensor 31 for detecting positions of the blowing mode switching damper 27 and the foot blowing mode switching damper 28 is provided.

The passage 3 on the upstream side of the blower fan 4 is branched and opened into a vehicle interior air intake port 32 for introducing air inside the vehicle interior and a vehicle interior air intake port 33 for introducing air outside the vehicle interior. A suction port switching damper 34 is provided in the passage 3 at a portion branched into the vehicle interior air suction port 32 and the vehicle interior air suction port 33. The suction port switching damper 34 is driven by a suction port switching actuator 35, and selectively opens and closes the vehicle interior air suction port 32 and the vehicle interior air suction port 33 to selectively pass the vehicle interior air and the vehicle exterior air. 3 is introduced.
As shown in FIG. 1, the suction port switching actuator 35 includes a suction port switching motor 36 that drives the suction port switching damper 34, and detects the position of the suction port switching damper 34 from the operating position of the suction port switching motor 36. A mouth switching damper position sensor 37 is provided.

The air mix damper 15, vent blowing mode switching damper 27, foot blowing mode switching damper 28, and suction port switching damper 34 enter the vehicle interior from the vehicle interior / vehicle exterior air suction ports 32, 33 through the air conditioner 7. An opening / closing device 38 is configured to open and close the passage 3 through which the conditioned air blown out passes. The air mix actuator 16, the blowing mode switching actuator 29, and the suction port switching actuator 35 constitute driving means 39 that drives the opening / closing device 38.
The blower fan motor 8, the electromagnetic clutch 10, the heater cooling water valve 12, the air mix actuator 16, the blowing mode switching actuator 29, and the suction port switching actuator 35 are connected to the air conditioning control device 40 of the air conditioning system 1.
As shown in FIG. 1, the air conditioning control device 40 is powered by various sensors 41 for detecting the temperature and the like, an operation panel 42 for setting the temperature and air volume of the conditioned air, and an ignition switch (ING) 43. A battery 44 is connected. The air-conditioning control device 40 takes in data from various sensors 41 and operates the air-conditioning device 7 and the opening / closing device 38 to adjust the temperature / air volume of the air-conditioning air so that the inside air temperature in the passenger compartment approaches the temperature set by the operation panel 42. Control.

In the air conditioning system 1, for example, as shown in FIG. 3, the heater core 6 of the air conditioner 7 is disposed in the passage 3 through which the conditioned air formed by the air conditioning duct 2 passes, and the air mix actuator 16 that is one of the drive means 39. Thus, the air mix damper 15 which is one of the opening / closing devices 38 is moved from the first position P1 (for example, the fully closed position of the heater core passage 13 and the fully opened position of the bypass passage 14) at both ends of the operating range θa to the second position P2 (for example, The heater core passage 13 is fully opened and the bypass passage 14 is fully closed), and the heater core passage 13 and the bypass passage 14 are selectively opened and closed, and the conditioned air is selectively sent to the heater core passage 13 and the bypass passage 14. To distribute.
However, when foreign matter S such as debris or parts is caught in the operating range θa of the air mix damper 15 when the air conditioning system 1 is manufactured or mounted on a vehicle, the air mix damper 15 is not connected to the second end of the operating range θa. There is a possibility that the actuator cannot move to the first position P1 and the second position P2, stops at the intermediate position P3, the operating range θa becomes θc narrowed by θb, and locks the air mix actuator 16.

The air conditioning system 1 is provided with an inspection device 45 as shown in FIG. The inspection device 45 includes an air conditioning system inspection means 46 in the air conditioning control device 40. The air-conditioning system inspection means 46 is for air-conditioning such as operation or failure of the air-conditioning apparatus 7, the opening / closing apparatus 38, and the drive means 39 constituting the system at the time of manufacture of the air-conditioning system 1 or maintenance after the air-conditioning system 1 is mounted on the vehicle. System inspection process can be implemented.
The inspection device 45 includes an opening / closing device inspection means 47. The switchgear inspection means 47 is a switchgear inspection process for inspecting whether the switchgear 38 is movable from the first position to the second position at both ends of the operating range in the air conditioning system inspection process performed by the air conditioning system inspection means 46. When an execution command (actuator inspection flag described later) is set, the switchgear inspection process is performed at the next power-on.
The air conditioning system inspection means 46 includes at least the dampers 15, 27, 28, and 34 of the opening / closing device 38 including the air mix damper 15, the vent / foot blowing mode switching dampers 27 and 28, and the suction port switching damper 34. The first normal value and the second normal value respectively detected at the first position and the second position at both ends of the operating range are stored in advance.
The opening / closing device inspection means 47 uses the air mix actuator 16, the blowing mode switching actuator 29, and the suction port switching actuator 35, which are the driving means 39, during the opening / closing device inspection process, to each damper 15, 27, 28, 34. Is moved from the first position at the both ends of the operating range to the second position, the first detection value detected at the position assumed to be located at the first position and the place assumed to be located at the second position The detected second detection value is compared with the first normal value and the second normal value stored in the air-conditioning system inspection means 46 of each of the dampers 15, 27, 28, and 34 to be inspected. It is determined whether the operations of 15, 27, 28, and 34 are normal.

Next, the operation of this embodiment will be described.
When the inspection device 45 of the air conditioning system 1 is mounted on a vehicle, as shown in FIG. 4, when the process starts when the ignition switch (IGN) 43 is turned on (t1 in FIG. 6) (A01), the air conditioning system 45 It is determined whether the system inspection mode is a system inspection process (A02). If this determination (A02) is NO, this determination (A02) is repeated. If the system inspection mode is ON (t2 in FIG. 6) and the determination (A02) is YES, it is determined whether there is a setting operation for turning on the actuator inspection flag, which is an execution command for the switchgear inspection process (A03). .
If this determination (A03) is NO, the process returns to determination (A02). If there is a setting operation to turn on the actuator inspection flag and the determination (A03) is YES, the actuator inspection flag is set to ON (t3 in FIG. 6) (A04), and the process returns (A05).
As described above, when the switchgear 38 is inspected, the switchgear inspection process is performed when the system inspection is performed in the air conditioning system inspection process (system inspection mode) before the switchgear 38 is inspected. The setting of turning on the actuator inspection flag, which is an execution command of the above, is performed by operating the operation panel 42. The ON setting of the actuator inspection flag is held in the air conditioning system inspection means 46 even when the ignition switch 43 is turned off and the system inspection mode is turned off (t4 in FIG. 6).

Next, as shown in FIG. 5, when the process starts (B01), the inspection device 45 of the air conditioning system 1 determines whether the ignition switch (IGN) 43 that has been turned off (t4 in FIG. 6) is turned on. (B02). If this determination (B02) is NO, the process returns (B09). If the ignition switch 43 is ON (t5 in FIG. 6) and the determination (B02) is YES, it is determined whether the actuator inspection flag is ON (B03).
If this determination (B03) is NO, the process returns (B09). If this determination (B03) is YES, the air mix motor 17 of the air mix actuator 16 causes the air mix damper 15 to move to the first position at both ends of the operating range (for example, the fully closed position of the heater core passage 13 and the fully open bypass passage 14). Position) to a second position (for example, a fully open position of the heater core passage 13 and a fully closed position of the bypass passage 14) (B04), and a place (refer to FIG. The first detection value is detected at t5) of 6, and the second detection value is detected at a location (t6 of FIG. 6) that is assumed to be located at the second position.
Next, the vent mode / foot vent mode switching dampers 27 and 28 are moved to the first positions (for example, the center vent / side vent vent ports 22, 23. 24 to the second position (for example, the fully open position of the center vent / side vent outlets 22, 23, 24, the fully open position of the foot outlet 25). B05), the first detection value is detected at the place (t6 in FIG. 6) that is assumed to be located at the first position by the blowing mode switching damper position sensor 31, and the place that is assumed to be located at the second position (FIG. 6). The second detection value is detected at t7 or t8).
Further, the suction port switching motor 36 of the suction port switching actuator 35 moves the suction port switching damper 34 to the first positions at both ends of the operating range (for example, the fully closed position of the vehicle interior air suction port 32, the fully open position of the vehicle exterior air suction port 33). Position) to the second position (for example, the fully open position of the vehicle interior air intake port 32, the fully closed position of the vehicle exterior air intake port 33) (B06), and is positioned at the first position by the intake port switching damper position sensor 37. The first detection value is detected at the place (t7 or t8 in FIG. 6), and the second detection value is detected at the place (t9 or t10 in FIG. 6) assumed to be located at the second position. .
After the dampers 15, 27, 28, and 34 are driven from the first position to the second position in the operating range and the positions are detected, it is determined whether or not there is a lock determination during the driving (B07). This determination (B07) is the first detection value detected at the location assumed to be located at the first position, the second detection value detected at the location assumed to be located at the second position, and the inspection object. By comparing the first normal value and the second normal value stored in the air conditioning system inspection means 46 of each damper 15, 27, 28, 34, whether the operation of each damper 15, 27, 28, 34 is normal. Determine if.
For example, if the blowout mode switching actuator 29 stops halfway (t7 in FIG. 6) and does not reach the second position (t8 in FIG. 6) and the determination (B07) is YES in the determination of the presence of lock, there is a failure. A signal is output (t7 in FIG. 6), the warning lamp blinks (B08), and the process returns (B09).
On the other hand, if the blowing mode switching actuator 28 does not stop halfway and reaches the second position (t8 in FIG. 6) and the determination of no lock (B07) is NO, the suction port switching actuator 35 is stopped (see FIG. In accordance with the normal end of the inspection at t10 of 6), the actuator inspection flag is turned OFF (t10 of FIG. 6) (B10), and the process returns (B09). The actuators 16, 29, and 35 are returned to the inspection start position after the normal completion of the inspection, and thereafter driven according to normal control.

As described above, the inspection device 45 of the air conditioning system 1 has the actuator inspection flag turned on when the power is turned on again after the air conditioning system inspection process in which the actuator inspection flag is set to ON is terminated and the power is turned off. Judge whether it has been. When the actuator inspection flag is ON, the inspection device 45 performs inspection by the opening / closing device inspection process to determine whether the operation of each of the dampers 15, 27, 28, and 34 is normal. When the inspection device 45 determines that the actuators 16, 29, and 35 are locked due to the foreign matter S (see FIG. 3) in the opening / closing device inspection process, the inspection device 45 outputs a signal with a failure and determines that it is normal Turns off the actuator inspection flag.
Therefore, in the inspection device 45 of the air conditioning system 1, the opening / closing device 38 that opens and closes the passage 3 through which the conditioned air flows passes through the first position (for example, fully closed position) and the second position (for example, fully open position) at both ends of the operating range. ) Until the normal operation is possible.
Thereby, the inspection apparatus 45 of this air conditioning system 1 can implement | achieve a highly accurate test | inspection about the action | operation of the switchgear apparatus 38, without being influenced by a worker's skill.
The inspection device 45 of the air conditioning system 1 includes an opening / closing device 38 including at least an air mix damper 15, vent / foot blowing mode switching dampers 27 and 28, and a suction port switching damper 34. Each of the dampers 15, 27, 28, and 34 stores in advance a first normal value and a second normal value that are respectively detected at the first position and the second position at both ends of the operating range. When the dampers 15, 27, 28, and 34 are moved from the first position to the second position at both ends of the operating range using the driving means 39 during the opening / closing device inspection process, they are positioned at the first position. The first detection value detected at the location to be detected and the second detection value detected at the location assumed to be at the second position, and the air conditioning system of each of the dampers 15, 27, 28, and 34 to be inspected By comparing the first normalized value and a second normalized value which is stored in Temu checking means 46 determines the operation of the dampers 15, 27, 28, 34 whether normal.
Thereby, the inspection device 45 of the air conditioning system 1 simply compares the first normal value and the second normal value set in advance with the detected first detection value and the second detection value, and the opening / closing device 38 is It can be determined whether it can operate normally.
In this embodiment, the inspection device 45 is operated by turning ON / OFF the ignition switch 43 for the air conditioning system 1 after being mounted on the vehicle. However, for each air conditioning system 1 before being mounted on the vehicle, the actuators 16, 29. The inspection device 45 can be operated by turning on and off the drive power source 35. Thereby, the inspection by the inspection device 44 can be performed not only at the time of manufacturing the air conditioning system 1 at the production factory, but also at the time of maintenance at the maintenance factory after the air conditioning system 1 is mounted on the vehicle.

  This invention can automatically check whether the switchgear that opens and closes the passage through which the conditioned air passes can be operated normally, and does not depend on the skill of the operator, and highly accurate inspection of the switchgear operation is possible. It can be realized and can be applied not only to the air conditioning system but also to other control systems.

It is a block diagram of the inspection apparatus of the air-conditioning system which shows an Example. It is a schematic block diagram of the inspection apparatus of the air conditioning system which shows an Example. It is an expanded block diagram of the air mix damper part of the channel | path which shows an Example. It is a flowchart of the actuator inspection flag setting which shows an Example. It is a flowchart of the switchgear inspection process which shows an Example. It is a time chart of the switchgear inspection process which shows an example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Air conditioning system 2 Air conditioning duct 3 Passage 4 Blower fan 5 Evaporator 6 Heater core 7 Air conditioner 15 Air mix damper 16 Air mix actuator 17 Air mix motor 18 Air mix damper position sensor 27 Bent blow mode switching damper 28 Foot blow mode switching damper 29 Blowing Mode Switching Actuator 30 Blowing Mode Switching Motor 31 Blowing Mode Switching Damper Position Sensor 34 Suction Port Switching Damper 35 Suction Port Switching Actuator 36 Suction Port Switching Motor 37 Suction Port Switching Damper Position Sensor 38 Opening / Closing Device 39 Drive Unit 40 Air Conditioning Control Device 43 Ignition switch 45 Inspection device 46 Air conditioning system inspection means 47 Switchgear inspection means

Claims (2)

It has an opening and closing device that opens and closes a passage through which air-conditioned air blown out from the air suction port through the air conditioning device to the passenger compartment.
In an inspection apparatus for an air conditioning system provided with a driving means for driving the opening / closing device,
Air conditioning system inspection means capable of performing an air conditioning system inspection process at the time of manufacturing the air conditioning system or at the time of maintenance after mounting the air conditioning system on a vehicle,
In the air conditioning system inspection process carried out by the air conditioning system inspection means, when an execution instruction for the opening / closing device inspection process for inspecting whether the switchgear is movable from the first position to the second position at both ends of the operating range is set Comprises an opening / closing device inspection means for performing the opening / closing device inspection step at the next power-on. The opening / closing device is composed of at least an air mix damper, a blowing mode switching damper, and a suction port switching damper.
The air conditioning system inspection means stores in advance a first normal value and a second normal value that are detected respectively at the first position and the second position of each end of the operating range of each damper,
The switchgear inspection means, when performing the switchgear inspection process, when the damper is moved from the first position to the second position at both ends of the operating range using the drive means,
The first detection value detected at the location assumed to be located at the first position, the second detection value detected at the location assumed to be located at the second position, and the first regularity of each damper to be inspected Compare the value and the second normal value,
The air conditioner inspection apparatus according to claim 1, wherein the operation of each of the dampers is determined to be normal.

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