JP2008100569A - Air conditioner for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioner for a vehicle capable of eliminating the need of a special solar radiation sensor, and improving temperature adjusting performance, with a simple structure. <P>SOLUTION: An intake portion 17 is communicated with a vehicular cabin space A above an upper surface portion 3a of an instrument panel 3 through a first suction tube 22 extended from a first suction opening portion 3e. The intake portion 17 is communicated with a vehicular cabin space B behind a seat surface side 3b of the instrument panel 3 through a second suction tube 23 extended from a second suction opening portion 3g. An interior temperature sensor 21 provided in the intake portion 17 detects the temperature of inside air obtained by mixing inside air of the vehicular cabin space A and inside air of the vehicular cabin space B in the intake portion 17. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention mainly relates to a vehicle air conditioner used for a vehicle such as an automobile, and more particularly to a vehicle air conditioner that performs temperature adjustment in consideration of the amount of solar radiation.

  Conventionally, a vehicle air conditioner as shown in FIG. 11 is known (see, for example, Patent Document 1).

  First, in terms of configuration, in this conventional vehicle air conditioner, an intake section 5 of the air conditioner 4 is provided in an instrument panel 3 provided in front of the driver's seat 2 of the vehicle 1.

  The intake portion 5 is mainly provided in the fan case 6 and includes a fan 8 that is rotated by a fan motor 7 and an opening 9 formed in the upper surface portion 3 a of the instrument panel 3. A suction case 11 that is in communication with the fan case 6 and provided with a temperature sensor 10 is mounted inside.

  Further, in the suction case 11, a suction port 13 connected through a suction tube 12 is formed in the seat side surface 3 b of the instrument panel 3.

  Next, the operation of this conventional vehicle air conditioner will be described.

  In the conventional vehicle air conditioner configured as described above, the temperature sensor 10 detects the inside air temperature to be introduced and the solar radiation applied to the upper surface portion 3a of the instrument panel 3 through the windshield 14. It is also used for quantity detection.

The control unit (not shown) periodically switches between the internal air temperature and the detection of solar radiation, and both are fed back, thereby eliminating the need for a dedicated solar radiation sensor.
Japanese Utility Model Publication No. 2003-4495 (paragraphs 0020 to 0067, FIGS. 1, 2, and 8)

  However, in the conventional vehicle air conditioner configured as described above, the circuit configuration for periodically switching the internal temperature and the detection of solar radiation by the control unit becomes complicated and the number of parts increases. There is a problem that the merit of eliminating the need for a dedicated solar radiation sensor is reduced.

  Accordingly, an object of the present invention is to provide a vehicle air conditioner that has a simple configuration, can eliminate the need for a dedicated solar radiation sensor, and can improve temperature adjustment performance.

  In order to achieve the above object, according to the first aspect of the present invention, the temperature of the air in the passenger compartment is detected at the intake portion of the main body of the harmony device provided in the instrument panel located in front of the vehicle seat. An indoor air temperature sensor is provided, and an intake tube for introducing internal air into the intake portion is provided from an intake opening formed in the instrument panel, and the temperature of the internal air introduced into the intake portion by the intake tube In the vehicle air conditioner that performs temperature adjustment control using the above, the vehicle air conditioner is provided with the suction opening on the upper surface side of the instrument panel.

  Further, in the present invention, the suction opening portion is formed on the first suction opening portion provided on the upper surface side of the instrument panel and on the seat surface side or lower surface side of the instrument panel. A first suction tube extending from the first suction opening, the second suction opening being connected to the suction portion via a second suction tube. The inside air on the upper surface side of the introduced instrument panel and the inside air on the seat surface side or the lower surface side of the instrument panel introduced by the second suction tube are mixed in the intake section. It features a vehicle air conditioner.

  Further, according to a third aspect of the present invention, there is provided the vehicle according to the first or second aspect, wherein a part of the suction tube is provided with an opening / closing valve capable of controlling the flow of the introduced internal air by an opening / closing operation. It features an air conditioner.

  Further, according to a fourth aspect of the present invention, the opening / closing valve has a valve body that performs an opening / closing operation by rotation, and the valve body is configured to rotate the mode door provided in the harmony device body. The vehicle air conditioner according to claim 3 being interlocked is characterized.

  In the invention according to claim 1 configured as described above, when the temperature of the inside air on the upper surface side of the instrument panel rises due to solar radiation, the inside air whose temperature has risen from the suction opening portion passes through the suction tube. And introduced into the intake section.

  In the indoor air temperature sensor provided in the intake portion, temperature adjustment control is performed using the temperature of the inside air introduced into the intake portion.

  For this reason, air-conditioning control that takes into account the internal temperature that has risen due to solar radiation is performed, so that air conditioning control according to the sensible temperature of passengers can be performed without providing a dedicated solar radiation sensor to improve temperature adjustment performance Can do.

  Further, in the present invention, the inside air on the upper surface side of the instrument panel introduced from the first suction opening through the first suction tube, and the second suction tube from the second suction opening. The inside air on the seat surface side or the lower surface side of the introduced instrument panel is mixed in the intake section to reach an average temperature, and even without the dedicated solar radiation sensor, the occupant is further provided. The air conditioning control according to the perceived temperature is performed, and the temperature adjustment performance can be improved.

  Further, according to the third aspect of the present invention, the flow of the introduced internal air is controlled by opening / closing an on-off valve provided in a part of the suction tube.

  For this reason, the ratio of the temperature in the passenger compartment detected by the indoor air temperature sensor provided in the intake portion can be easily adjusted.

  According to a fourth aspect of the present invention, the valve body of the on / off valve is rotated by the rotation of the mode door, and the opening / closing operation of the on / off valve is performed.

  For this reason, for example, when the mode door is closed, the on-off valve is opened to perform temperature control that takes into account the internal temperature increased by solar radiation, and when the mode door is open, the intake opening The open / close valve can be closed so that the inside air that has been warmed by the defroster air that exists around the part is not introduced into the intake part via the intake tube.

  Therefore, a vehicle air conditioner that has a good temperature adjustment performance, has a simple configuration, and can eliminate the need for a dedicated solar radiation sensor is provided.

  Next, a vehicle air conditioner according to the best mode for carrying out the invention will be described with reference to the drawings.

  In addition, the same code | symbol is attached | subjected and demonstrated about the same or equivalent part as the said prior art example.

  1 to 10 show a vehicle air conditioner according to the best embodiment of the present invention.

  First, the overall configuration will be described. In the vehicle air conditioner of this embodiment, an instrument is mounted in front of the driver's seat 2 as a seat mounted in the passenger compartment 20 of the vehicle 15 along the vehicle width direction. A panel 3 is provided.

  A pair of left and right defroster openings 3c and 3c having a longitudinal direction in the vehicle width direction along the surface extending direction of the front window glass 14 are formed in the upper surface portion 3a of the instrument panel 3.

  Between these defroster openings 3c, 3c, as shown in FIG. 3, a first suction opening 3e is formed in a substantially circular shape in a top view at the approximate center of the upper surface 3a of the instrument panel 3 in the vehicle width direction. The opening is formed.

  Further, a pair of left and right center ventilator openings 3f and 3f are formed in the seat surface side 3b of the instrument panel 3 so as to be opened.

  The seat panel side 3b of the instrument panel 3 is formed with a second suction opening 3g as a suction opening that is spaced apart from the first suction opening 3e.

  Furthermore, a harmony device main body 16 is provided in the instrument panel 3.

  The harmony device body 16 has a hollow box-like housing 16a.

  In the upper part of the housing 16a, there are a vent air blowing port 3d and a differential air blowing port 3h for sending air from a rotating fan by driving a fan motor provided in a blower unit (not shown) arranged in proximity. As shown in FIG.

  The vent air vent 3d and the differential air vent 3h are connected to the center ventilator openings 3f and 3f and the defroster openings 3c and 3c, respectively, via ducts.

  Further, a vent foot door 18 as a mode door is pivotally supported by a rotating shaft 18a having an axial direction in the vehicle width direction at an opening peripheral edge portion of the housing 16a where the vent air blowing port 3d is formed. The rotation shaft 18a is configured to be rotatable so as to perform the opening / closing operation of the air outlet 3d.

  Further, a differential door 19 is pivotally supported by a rotating shaft 19a having an axial direction in the vehicle width direction at an opening peripheral edge portion of the housing 16a where the differential air blowing port 3h is formed. Is configured to be rotatable so as to open and close the air outlet 3h.

  In this embodiment, the differential door 19 is configured to be alternately opened and closed in conjunction with the vent foot door 18.

  Further, an air intake portion 17 provided with an indoor air temperature sensor 21 for detecting the temperature of the air in the vehicle interior is fixed to the side surface portion 16b of the housing 16a in a hollow shape.

  The intake portion 17 communicates with a vehicle interior space A above the upper surface portion 3a of the instrument panel 3 via a first intake tube 22 extending from the first intake opening 3e.

  The intake portion 17 communicates with a vehicle interior space B located behind the seat surface side 3b of the instrument panel 3 via a second intake tube 23 extending from the second intake opening 3g. Has been.

  The intake portion 17 is connected to the aspirator 28 via the introduction tube 24. The aspirator 28 communicates with the internal space of the housing 16a, and sucks the air in the introduction tube 24 by the negative pressure generated when air in the internal space of the housing 16a is discharged from the opening 29.

  As a result, the first suction tube 22 that is communicated with the inner space of the housing 16a and that extends from the first suction opening 3e when air is sucked in the direction of the inner space of the housing 16a. The inside air of the vehicle interior space A located on the upper surface side of the introduced instrument panel 3 and the instrument panel 3 introduced by the second suction tube 23 extended from the second suction opening 3g. The interior air of the vehicle interior space B located behind the seat surface side 3b is configured to be mixed in the intake portion 17.

  Furthermore, in this embodiment, an opening / closing valve 25 capable of controlling the flow of the introduced internal air by an opening / closing operation is provided in a part of the path of the first suction tube 22.

  The on-off valve 25 has a valve body 26 as shown in FIGS. 5 to 7 in a hollow cylindrical portion 25a having an axial direction perpendicular to the longitudinal direction of the first suction tube 22. Is provided.

  As shown in FIG. 6 or 7, the valve body 26 can be opened and closed by changing the rotation angle, and can pass or block air flowing through the flow passage 22 a in the first suction tube 22. In addition, at the intermediate position, a passage 26a that allows the air passage amount to be variably controlled according to the rotation angle is formed through.

  Further, in the valve body 26, a joint portion 27 having a square cross section formed as shown in FIG. 5 is inserted into the end portion of the rotation shaft 18a of the vent foot door 18 provided in the harmony device body 16. A fitting hole portion 26b to be fitted and fitted is provided.

  Then, the joint portion 27 is fitted into the fitting hole portion 26b, and the rotation shaft 18a coincides with the rotation shaft of the valve body 26, whereby the rotation operation of the valve body 26 is performed. It is configured to be interlocked with the rotation of the vent foot door 18 provided in the harmony device main body 16.

  Next, the effect of the vehicle air conditioner of this embodiment will be described.

  In the vehicle air conditioner of this embodiment, when the inside air of the vehicle interior space A located above the upper surface portion 3a of the instrument panel 3 rises in temperature due to solar radiation, the first intake opening 3e The inside air whose temperature has risen is introduced into the intake portion 17 via the first intake tube 22.

  In the indoor air temperature sensor 21 provided in the intake portion 17, temperature adjustment control is performed by detecting and using the temperature of the internal air introduced into the intake portion 17.

  For this reason, air-conditioning control that takes into account the internal temperature increased by solar radiation is performed, so even without providing a dedicated solar sensor etc., air-conditioning control with high responsiveness according to the actual sensible temperature of the occupant is made, Temperature adjustment performance can be improved.

  Further, in this embodiment, the inside air in the vehicle interior space A on the upper surface portion 3a side of the instrument panel 3 introduced from the first suction opening 3e through the first suction tube 22 and the second suction The inside air of the vehicle interior space B located behind the seat surface side 3b of the introduced instrument panel 3 from the opening 3g via the second suction tube 23 is mixed in the intake portion 17, As shown in FIG. 8, the temperature of the air detected by the indoor air temperature sensor 21 becomes an average temperature, and even if the dedicated solar radiation sensor is not provided, it is more sensitive to the sensible temperature of the passenger. Air conditioning control is performed, and the temperature adjustment performance can be improved.

  Furthermore, in this embodiment, the open / close valve 25 provided in a part of the path of the first suction tube 22 is opened / closed to control the flow of the introduced internal air.

  For this reason, the temperature ratio of the vehicle interior spaces A and B detected by the indoor air temperature sensor 21 provided in the intake portion 17 can be easily adjusted.

  And in this embodiment, as shown in FIG.5 and FIG.6, the valve body 26 of the said on-off valve 25 rotates in response to rotation of the vent foot door 18 as said mode door, The opening / closing operation of the opening / closing valve 25 is performed, and the ratio of the inside air in the vehicle interior space A to be mixed with the inside air in the vehicle interior space B is varied.

  Therefore, for example, as shown in FIGS. 8 and 9, when the air conditioning control mode is VENT or B / L, the differential door 19 is closed and the vent foot door 18 is closed as shown by the solid line in FIG. Is released.

  In this state, as shown in FIG. 6, the valve body of the on-off valve 25 that is interlocked with the rotation of the rotating shaft 18a of the vent foot door 18 is opened, and the air in the vehicle interior space A that has risen due to solar radiation is released. , Guided toward the intake portion 17.

  Therefore, as shown in FIG. 8, when there is solar radiation, the temperature of the inside air in the vehicle interior space A to be mixed becomes higher than the temperature of the indoor air in the room space B, and the temperature of the inside air in the vehicle interior space A is The added temperature control is performed.

  Further, as shown in FIG. 9, when there is no solar radiation, the temperature of the inside air in the vehicle interior space A and the temperature of the internal air in the vehicle interior space B become substantially equal, and the inside air in this vehicle interior space A Even if the temperature of the vehicle is taken into account, the internal air temperature is detected as a temperature that is not different from the case where only the vehicle interior space B is detected by the indoor air temperature sensor 21, so that the internal air temperature is used to control the temperature. Is done.

  Furthermore, as shown in FIG. 10, when the air-conditioning control mode is FOOT or DEF, the differential door 19 is opened and the vent foot door 18 is closed as shown by a two-dot chain line in FIG.

  In this state, as shown in FIG. 7, the on-off valve 25 interlocked with the rotation of the rotation shaft 18a of the vent foot door 18 is closed, and the air in the vehicle interior space A regardless of whether there is solar radiation. However, as shown in FIG. 10, only the air in the vehicle interior space B is guided into the intake portion 17 and detected by the indoor air temperature sensor 21 without being guided toward the intake portion 17. Thus, the temperature control of the air conditioning is performed.

  For this reason, when the differential door 19 is opened, the inside air in the vehicle interior space A, which is present around the first suction opening 3e and is warmed by the defroster ventilation, passes through the first suction tube 22. Thus, the on-off valve 25 can be closed so as not to be introduced into the intake portion 17.

  Therefore, there is provided a vehicle air conditioner that is less affected by the defroster air flow, has good temperature adjustment performance, has a simple configuration, and does not require a dedicated solar radiation sensor.

  The embodiment of the present invention has been described in detail above with reference to the drawings. However, the specific configuration is not limited to this embodiment, and design changes that do not depart from the gist of the present invention are not limited to this embodiment. Included in the invention.

  That is, in the embodiment, the seat surface side 3b of the instrument panel 3 is provided with a second suction opening 3g as a suction opening that is spaced apart from the first suction opening 3e. However, the present invention is not limited to this. For example, on the lower surface side of the instrument panel 3, the second suction tube 23 is connected to the suction portion 17 via the second suction tube 23. The second suction opening 3g connected to the suction portion 17 may be formed, and any portion other than a portion that is highly influenced by solar radiation, such as the upper surface portion 3a of the instrument panel 3, may be used. The second suction opening may be provided at such a position.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic cross-sectional view of a vehicle illustrating an overall configuration of a vehicle air conditioner according to a best embodiment of the present invention. It is a perspective view explaining the composition of the harmony device main part in the air harmony device for vehicles of an embodiment. It is an air conditioning apparatus for vehicles of an embodiment, and is a top view of an instrument panel. It is the front view which looked at the vehicle front from the direction of the seat of a vehicle interior in the vehicle air conditioner of an embodiment. It is a disassembled perspective view explaining joining with the valve body of an on-off valve, and the joint part of a rotating shaft in the vehicle air conditioner of embodiment. It is sectional drawing in the position along the CC line in FIG. 5 which shows the case where air-conditioning mode is VENT or B / L with a solid line in the vehicle air conditioner of embodiment. It is sectional drawing in the position along the CC line in FIG. 5 which shows the case where air-conditioning mode is FOOT or DEF with a solid line in the vehicle air conditioner of embodiment. It is a graph explaining an example of the temperature detected when the air conditioning mode is VENT or B / L and there is solar radiation in the vehicle air conditioner of the embodiment. It is a graph explaining an example of the temperature detected when the air conditioning mode is VENT or B / L and there is no solar radiation in the vehicle air conditioner of the embodiment. It is a graph explaining an example of the temperature detected when the air-conditioning mode is FOOT or DEF in the vehicle air conditioner of the embodiment. It is sectional drawing in the position along the vehicle front-back direction of the instrument panel explaining the structure of the principal part by the vehicle air conditioner of a prior art example.

Explanation of symbols

2 Driver's seat (seat)
DESCRIPTION OF SYMBOLS 3 Instrument panel 3a Upper surface part 3b Seat surface side 3e 1st suction | inhalation opening part 3g 2nd suction | inhalation opening part 15 Vehicle 16 Harmonic apparatus main body 17 Intake part 18 Vent foot door (door linked with a mode door)
19 Differential door (mode door)
21 Indoor air temperature sensor 22 First suction tube 23 Second suction tube 25 On-off valve 26 Valve element

Claims (4)

An intake air opening formed in the instrument panel is provided with an indoor air temperature sensor for detecting the temperature of the air in the passenger compartment in an intake part of the harmony device body provided in the instrument panel located in front of the vehicle seat. In the vehicle air conditioner for providing temperature adjustment control by using the temperature of the internal air introduced into the intake part by the intake tube by providing an intake tube for introducing the internal air from the part to the intake part.
The vehicle air conditioner characterized in that the suction opening is provided on the upper surface side of the instrument panel.   The suction opening includes a first suction opening provided on the upper surface side of the instrument panel, and a second suction opening formed on the seat surface side or the lower surface side of the instrument panel, The second suction opening is connected to the suction part via the suction tube, and the first suction tube extended from the first suction opening is provided on the upper surface side of the instrument panel introduced. 2. The vehicle air conditioner according to claim 1, wherein inside air and inside air on a seat surface side or a lower surface side of the instrument panel introduced by the second suction tube are mixed in the intake portion.   The vehicle air conditioner according to claim 1 or 2, wherein a part of the suction tube is provided with an opening / closing valve capable of controlling a flow of introduced internal air by an opening / closing operation. The said opening / closing valve has a valve body which opens and closes by rotation, and this valve body is interlocked with rotation of the mode door provided in the said harmony apparatus main body. The vehicle air conditioning apparatus described.

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