JP2005145103A - Air conditioner for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioner for a vehicle capable of setting the proper ambient temperature around a driver, by correcting a detecting temperature value of an inside air sensor by a factor related to a change in the cabin inside ambient temperature, when controlling an air blowing state from the other blowout port except for a blowout port for a driver's seat. <P>SOLUTION: The air-conditioning temperature is controlled on the basis of the detecting temperature of the inside air sensor 3 by an air-conditioning control means 2. When detecting that an occupant is not seated on a seat except for the driver's seat by an occupant detecting means 8, and when selecting an air-conditioning blowout port selecting means, an air blowing state from the other air-conditioning air blowout port arranged for the seat except for the driver's seat is controlled, and when controlling the air blowing state from the other air-conditioning air blowout port by determining that the occupant is only the driver, the ambient temperature of the driver can be properly expressed by arranging an inside air sensor air-conditioning correcting means 13 for correcting a detecting value of the inside air sensor 3 by the factor related to a change in the cabin inside ambient temperature, and amenity is further improved for the driver by air-conditioning control. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an air conditioner mounted on a vehicle.

  In the conventional air conditioner, the occupant detection means determines whether an occupant is seated in each seat, and if no occupant is seated in a seat other than the driver's seat, the other air outlet provided for that seat The air-conditioning apparatus is designed to save energy by closing the duct passage leading to the air and stopping the air blowing from the air outlet (see, for example, Patent Document 1).

In addition, air-conditioning wind stop for seats that are not seated in this way can reduce the amount of air blown from the driver's seat outlet or control the compressor to increase the air temperature, While ensuring a comfortable feeling, the air conditioning performance is properly controlled to save energy.
JP 2002-248936 A (page 7, FIG. 11)

  However, in such a conventional vehicle air conditioner, the air-conditioning control is performed using the detected temperature of the inside air sensor that detects the average temperature in the vehicle interior as one piece of information. Therefore, the detected temperature of the inside air sensor represents the ambient temperature near the driver, and the difference between the detected temperature of the inside air sensor and the ambient temperature of the driver is small. Comfortable air conditioning is achieved around the driver in the state where the wind is blowing.

  However, at the time of control in which other air outlets other than the air outlet for the driver's seat are closed, there is a difference in the ambient temperature between the driver's seat and the other seats depending on the presence or absence of the conditioned air. As a result, the air-conditioning control becomes uncomfortable for the driver.

  For example, under the summer conditions, the cabin temperature rises in the seats other than the driver when the conditioned air stops, so the inside air sensor that detects the average temperature in the cabin is higher than the ambient temperature of the driver. Will be detected and controlled, resulting in excessive cooling for the driver.

  Therefore, in view of such a conventional problem, the present invention corrects the detected temperature value of the inside air sensor with a factor related to the change in the vehicle interior atmosphere temperature during the control of closing the air outlet other than the air outlet for the driver's seat. Then, it aims at providing the air conditioning apparatus for vehicles which set the atmospheric temperature around a suitable driver | operator.

  In order to achieve this object, in the vehicle air conditioner of the present invention, the air conditioning control means controls the air conditioning temperature based on the detected temperature of the inside air sensor, and the occupant detection means removes the driver's seat. When it is detected that the passenger is not seated or when the air-conditioning outlet selection means is selected, the state of air flow from other air-conditioning air outlets provided for seats other than the driver's seat is controlled. When the air conditioner air blower from another air-conditioned air outlet is controlled when it is determined that no occupant is seated in a seat other than the driver's seat, or when the air-conditioning air outlet selecting means is selected, An inside air sensor air conditioning correction means for correcting the detected value with a factor related to a change in the vehicle interior atmosphere temperature is provided.

  According to the present invention having such a configuration, when the air blowing state from other air-conditioning wind outlets other than the driver's seat is controlled, the detected temperature of the inside air sensor is corrected by a factor related to the temperature change in the passenger compartment by the inside air sensor correcting means. As a result, the driver's ambient temperature can be appropriately represented by this correction value, and the air conditioning control can be made to be an air conditioning control that further improves the comfort for the driver.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  1 to 3 show an air conditioner for a vehicle according to the present invention, FIG. 1 is a schematic configuration diagram of the air conditioner, and FIG. 2 is a plan view of (a) an arrangement state of air-conditioning air outlets in a passenger compartment. FIG. 3 is an explanatory diagram showing a side view of b), and FIG. 3 is a flowchart in a case where air blown from the air outlet facing the seats other than the driver's seat is stopped by judging whether or not the occupant is the driver alone.

  As shown in FIG. 1, the vehicle air conditioner 1 of this embodiment includes an air conditioning control computer 2 as air conditioning control means. The air conditioning control computer 2 includes an inside air sensor 3, an outside air sensor 4, a solar radiation sensor 5. Detection signals from the suction temperature sensor 6, temperature setter 7, occupant detection means 8, etc. are input, and control signals are sent to the blower control means 9, air mix control means 10, outlet control means 11, and other various control means 12. Is output.

  The inside air sensor 3 detects the temperature inside the vehicle, the outside air sensor 4 detects the outside air temperature outside the vehicle, and the solar radiation sensor 5 detects the amount of solar radiation incident on the vehicle interior. The temperature sensor 6 detects the temperature sucked into the evaporator, the temperature setter 7 detects the temperature set by manipulating the temperature desired by the occupant, and the occupant detection means 8 determines whether the occupant is seated in each seat. Is supposed to be detected.

  In the passenger compartment R, as shown in FIG. 2A, there are provided a driver's seat 20, a passenger seat 21, left and right rear seats 22 and 23, and the occupant detection means 8 determines the weight of the seated occupant. A pressure sensor for sensing, an infrared sensor for irradiating and detecting a passenger, or the like can be used.

  The installation panel 24 in front of the driver seat 20 and the passenger seat 21 is provided with an air conditioning air outlet 25 for the driver seat and an air outlet 26 for the passenger seat 21. Oppositely, although not shown, there is a vehicle type in which an air conditioning air outlet for the rear seat is provided below the ceiling or the driver's seat 20 and the passenger seat 21. In this embodiment, the air conditioning air outlet 25 for the front seat is used. , 26 will be described as an example.

  Air-conditioning air blown from the air-conditioning air outlets 25 and 26 for the front seats, for example, from the air-conditioning air outlet 25 for the driver's seat generates a comfortable ambient temperature around the driver M as shown in FIG. It is supposed to be.

  When the occupant is seated in the passenger seat 21 other than the driver's seat 20 based on the occupant detection signal from the occupant detection means 8, the air conditioning control computer 2 occupies the driver M and the passenger seat outside the figure seated in the passenger seat 21. When the driver M is seated only in the driver's seat 20 while the air-conditioned air is blown toward the driver seat 20, the passenger seat 21 other than the driver seat 20 and the air-conditioned air outlet for the rear seat are provided. Is configured to stop air blowing from the other air-conditioning air outlet 26 provided for the rear seats 22 and 23.

  Stopping air blowing from the other air-conditioning air outlet 26 is achieved by closing a duct that leads to this.

  Here, in the present embodiment, when the air conditioning control computer 2 determines that the occupant is only the driver M and performs control (stop occupant-limited air conditioning control) to stop the blowing from the other air conditioning wind outlets 26, the inside air sensor The inside air sensor correcting means 13 is provided for correcting the detected value 3 with a factor related to the change in the passenger compartment temperature (Claim 1).

  FIG. 3 shows a flowchart of processing performed by the air conditioning control computer 2 in order to execute the air conditioning control for limiting the number of passengers. First, in step S1, various information necessary for the air conditioning control, that is, the inside air sensor 3, the outside air sensor 4, and the solar radiation sensor. 5, the sensor information by the suction temperature sensor 6 and the temperature setter 7 is acquired, and at the next step S2, the passenger information by the passenger detection means 8, that is, whether the passenger is seated in the seats 20 to 23 is acquired. To do.

  In step S3, it is determined whether or not the occupant is only the driver M. If another occupant is seated in any of the other seats 21 to 23 in addition to the driver M (NO), step S4 is performed. Then, in order to perform the normal air conditioning operation, the air flow rate and the air temperature are calculated, and the air outlet from which the air conditioning air is blown out is selected. In this embodiment, the air-conditioning air outlets 25 and 26 are selected, and in step S5, the air flow rate, the air temperature, and the command signal for the air outlet are output to the air-conditioning control units 9 to 12.

  On the other hand, if it is determined in step S3 that the occupant is only the driver M (YES), the process proceeds to step S6 to execute the inside air sensor correcting means 13 to correct the detected temperature Tinc of the inside air sensor 3.

The corrected indoor air sensor temperature Tinc at this time is
Tinc = Tinc + α (1)
To get as.

  The correction value α is obtained as a function of a factor related to the vehicle interior temperature. The factors include the inside air sensor temperature, the outside air temperature, the solar radiation requirement (the amount of solar radiation and the solar radiation direction), the air blowing requirement (the air blowing amount and the blowing temperature), and the like. is there.

α = function (Tinc, Tamb, Qsun, Qfun,...) (2)
Here, Tinc is the inside air sensor temperature, Tamb is the outside air temperature, Qsun is the solar radiation requirement (the amount of solar radiation and the solar radiation direction), Qfun is the air blowing requirement (the air blowing amount and the blowing temperature), and α is a value determined by experiments or the like. is there.

The correction value α is obtained in advance by an experiment using a parameter similar to the above as a parameter for the temperature difference (dT) between the location representative of the ambient temperature around the driver M and the set position of the inside air sensor 3, You may correct | amend with the function based on. (Claim 3)
α = function (dT) (3)
In the next step S7, the air volume and the air temperature are calculated in order to execute the occupant-limited air conditioning control, and the air outlet from which the conditioned air is blown out is selected.

  In this case, the air-conditioning air outlet 26 other than the air-conditioning air outlet 25 for the driver's seat is closed, and in step S5, these air flow rate, air temperature, and air outlet command signals are output to the air-conditioning controllers 9-12. To do.

  With the configuration described above, according to the vehicle air conditioner of the present embodiment, when the driver M is seated only in the driver's seat 20, it is provided for the passenger seat 21 and the rear seats 22, 23 other than the driver seat 20. The occupant-limited air conditioning control for stopping the air blowing from the other air-conditioning air outlets 26 is executed. When the occupant-limited air conditioning control is executed in this way, the inside air sensor correcting means 13 detects the inside air sensor 3. Since the temperature is corrected by a factor related to the temperature change in the passenger compartment, the atmospheric temperature of the driver M can be appropriately expressed by this correction value, and the air conditioning control improves the comfort for the driver M. It can be a control.

  Further, in the present embodiment, in addition to the actions and effects, the inside air sensor correction unit 13 is configured such that the temperature difference between the location representative of the ambient temperature around the driver M acquired using the factor as a parameter and the set position of the inside air sensor 3. Therefore, the ambient temperature around the driver M in the occupant-limited air conditioning control can be set more appropriately.

  Next, another embodiment shown in FIGS. 4 and 5 will be described. The vehicle air conditioner 1A according to this embodiment is an example in which the air conditioning outlet selection means 8A is used instead of the occupant detection means 8 of the above embodiment.

  The air-conditioning outlet selection means 8A is for selecting / canceling (returning to normal control) air-conditioning control for single passengers according to the user's intention. Specifically, a switch for selecting / canceling air-conditioning control for single passengers is provided. It is conceivable to newly install it on an air conditioner operation panel, a handle part, etc., or to give other switches (air conditioner operation switches) arranged on the air conditioner control panel to have the function. If the air conditioner is set through the monitor screen, a switch may be provided in the setting screen.

  As shown in FIG. 5, in the air conditioning control when this air conditioning outlet selection means 8A is used, it is determined whether or not the air conditioning outlet selection means 8A has been selected in step S2, and depending on the determination result, step S6 or later or Step S4 and subsequent steps are executed.

  In addition, the same number of steps is attached | subjected to the process similar to the flowchart shown in FIG. 3 (after step S4, step S6).

  In each of the above embodiments, an example in which it is determined whether only the driver is seated has been described as an example. However, the present invention can also be applied to a case where a passenger is present in the rear seat.

  Moreover, although the vehicle air conditioner of the present invention has been described by taking the above embodiment as an example, the present invention is not limited to this embodiment, and various other embodiments can be employed without departing from the gist of the present invention.

The schematic block diagram of the air conditioning apparatus in one Embodiment of this invention. Explanatory drawing which shows the arrangement | positioning state of the air-conditioning wind blower outlet in the vehicle interior in one Embodiment of this invention with the top view of (a), and the side view of (b). The flowchart which controls the air conditioning apparatus in one Embodiment of this invention. The schematic block diagram of the air conditioning apparatus in other embodiment of this invention. The flowchart which controls the air conditioning apparatus in other embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vehicle air conditioner 2 Air-conditioning control computer (air-conditioning control means)
3 Inside air sensor 8 Occupant detection means 13 Inside air sensor correction means 20 Driver's seat 21, 22, 23 Seats other than driver's seat 26 Other air-conditioning wind outlet M Driver

Claims (3)

An inside air sensor for detecting the temperature inside the vehicle;
Occupant detection means for detecting whether the occupant is seated,
Air-conditioning temperature is controlled based on the detected temperature of the inside air sensor, and when the occupant detection means detects that no occupant is seated in a seat other than the driver's seat, air is sent from the air-conditioning wind outlet facing the absent seat. In an air conditioning apparatus for a vehicle provided with an air conditioning control means for controlling the state,
When it is determined that no occupant is seated in a seat other than the driver's seat and the air blowing state from the air-conditioning air outlet facing the absent seat is controlled, the detected value of the inside air sensor is related to the change in the vehicle interior temperature. An air conditioning apparatus for a vehicle, characterized in that an inside air sensor correcting means for correcting with a factor is provided. An inside air sensor for detecting the temperature inside the vehicle;
A selection means (hereinafter referred to as “air-conditioning outlet selection means”) for selecting an air-conditioning method for controlling the air blowing state from the air-conditioning air outlet facing the seat other than the driver's seat;
Air-conditioning control means for controlling the air-conditioning temperature based on the detected temperature of the inside air sensor and for controlling the air blowing state from the air-conditioning air outlet facing the seat other than the driver's seat when the air-conditioning outlet selection means is selected. And an air conditioner for a vehicle comprising:
When the air-conditioning outlet selection means is selected and the air blowing state from the air-conditioning outlet facing the seat other than the driver's seat is controlled, the detected value of the inside air sensor is corrected by a factor related to the change in the passenger compartment temperature. An air conditioning apparatus for a vehicle, characterized in that an inside air sensor correction means is provided.   The said inside air sensor correction | amendment means correct | amends with a function based on the temperature difference of the location which represents the atmospheric temperature around a driver | operator which acquired the said factor as a parameter, and the setting position of an inside air sensor, The claim 1 and Claims Item 3. The vehicle air conditioner according to Item 2.

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