• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A vehicle seat air-conditioning system is used with a main air-conditioning unit which operates in one of a plurality of air blow modes. The main air-conditioning unit has an air-conditioned air outlet-port for supplying air-conditioned air irrespective of the air mode. The vehicle seat air-conditioning system includes an air-conditioned air duct connected to the air-conditioned air outlet-port, a seat-air duct connected to the air-conditioned air duct to supply the air-conditioned air to the inside of a seat and an air blower unit for blowing the air-conditioned air.
    公开号:US20010004008A1
    申请号:US09/738,699
    申请日:2000-12-15
    公开日:2001-06-21
    发明作者:Shinji Aoki；Yuichi Kajino；Takeshi Yoshinori
    申请人:Denso Corp；
    IPC主号:B60N2-5657
    专利说明:
    [0001] The present application is based on and claims priority from Japanese Patent Application Hei 11-361837 filed Dec. 20, 1999, the contents of which are incorporated herein by reference. [0001] BACKGROUND OF THE INVENTION
    [0002] 1. Field of the Invention [0002]
    [0003] The present invention relates to a vehicle seat air-conditioning system that supplies air-conditioned air of a vehicle air-conditioning unit into the inside of vehicle seats and blows out from the seats. [0003]
    [0004] 2. Description of the Related Art [0004]
    [0005] U.S. Pat. No. 6,059,018 or corresponding Japanese Patent Application JP-A-11-28928 discloses a vehicle seat air-conditioning system. The disclosed vehicle-seat-air-conditioning system supplies air-conditioned air of a main air-conditioning unit for a passenger compartment to the inside of vehicle seats though a rear foot duct. [0005]
    [0006] The main air-conditioning unit includes a unit case, in which a cool-air duct, a warm-air duct, and a rear foot duct are formed and an air-switching door is disposed between the cool-air duct and the warm-air duct. The rear foot duct is connected to the inside of the seat. [0006]
    [0007] When an air-blow mode of the air-conditioning unit is a foot mode, the air-switching door connects the rear foot duct to the warm-air duct to supply warm air. On the other hand, when the air-blow mode is a face mode, the air-switching door connects the rear foot duct to the cool-air duct to supply cool air. [0007]
    [0008] However, the above-described vehicle seat air-conditioning system cannot provide air-conditioned air different from air-conditioned air supplied to the passengers on the rear seat. For example, if the main air-conditioning unit is operated by a driver in the bi-level (B-L) mode, cooled air blows on the feet of the rear-seat passenger whether he or she likes it or not. If, on the other hand, the main air-conditioning unit is operated in the defroster (DEF) mode, no air blows on the feet of the rear-seat passenger whether he or she likes it or not. In addition, the air-switching door necessitates additional volume and cost of the main air-conditioning unit. [0008] SUMMARY OF THE INVENTION
    [0009] Therefore, a main object of the invention is to provide a vehicle seat air-conditioning system that can provide comfortable air-conditioned air irrespective of the air-blow mode. [0009]
    [0010] According to a main feature of the invention, a vehicle seat air-conditioning system is used with a main air-conditioning unit. The vehicle seat air-conditioning system includes an air-conditioned air duct connected to an air-conditioned air port of the main air-conditioning unit which always supplies air-conditioned air irrespective of the air-blow modes, a seat-air duct that supplies the air-conditioned air to the inside of a seat, and an air-blow unit that blows the air-conditioned air from the seat. [0010]
    [0011] According to another feature of the invention, the air-conditioned-air duct is connected to a SIDE port of the main air-conditioning unit, which always supplies the air-conditioned air irrespective of the air-blow mode. [0011]
    [0012] Therefore, no substantial modification of the main air-conditioning unit is necessary. [0012]
    [0013] According to another feature of the invention, the air-conditioned air duct includes a warming air dust and cooling air duct disposed in a rear FOOT duct of the main air-conditioning unit. It is preferable to further include a seat-air-switching door for selectively connecting one of the warming-air duct and the cooling-air duct to the seat-air duct. [0013]
    [0014] Therefore, it is possible to supply to a passenger sitting on the seat specifically provided comfortable air-conditioned air. [0014]
    [0015] According to another feature of the invention, the air blower unit includes a fan motor, a centrifugal fan driven by the fan motor and a blower case. The blower unit may include an inside-air inlet port, air-conditioned air inlet-port and an inlet-port switching door for selectively connecting the inside of the blower case to the inside-air inlet port or the air-conditioned air inlet-port. [0015] BRIEF DESCRIPTION OF THE DRAWINGS
    [0016] Other objects, features and characteristics of the present invention as well as the functions of related parts of the present invention will become clear from a study of the following detailed description, the appended claims and the drawings. In the drawings: [0016]
    [0017] FIG. 1 is a perspective view of a vehicle seat air-conditioning system according to a preferred embodiment of the invention; [0017]
    [0018] FIG. 2A is a cross-sectional view of a main air-conditioning unit, and [0018]
    [0019] FIG. 2B is a side view of FACE port and SIDE ports viewed from position A in FIG. 2A of the vehicle seat air-conditioning system shown in FIG. 1; [0019]
    [0020] FIG. 3 is a perspective view of warming-air duct, cooling-air duct, and rear FOOT duct of the vehicle seat air-conditioning system shown in FIG. 1; [0020]
    [0021] FIG. 4 is a cross-sectional side view of a seat-air-blower unit of the vehicle seat air-conditioning system shown in FIG. 1; [0021]
    [0022] FIG. 5 is is a block diagram of an electronical control unit of the vehicle seat air-conditioning system according to the preferred embodiment; and [0022]
    [0023] FIGS. 6A, 6B and [0023] 6C are schematic perspective diagrams illustrating a control panel of the vehicle seat air-conditioning system according to the preferred embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
    [0024] A preferred embodiment of the present invention is described with reference to the appended drawings. [0024]
    [0025] As shown in FIG. 1, vehicle seat air-conditioning system S is disposed inside and back of seat [0025] 2. Vehicle seat air-conditioning system S includes seat blower unit 3, cooling-air ducts 4 and warming-air duct 5 connected between main air-conditioning unit 1 and seat blower unit 3. Seat 2 is comprised of a seat back and a seat cushion, which are covered with leather, moquette, or the like. Air path 2 c is disposed inside seat 2 to supply air-conditioned air from seat blower unit 3 to the seat surface. The seat, which is covered with leather or the like, has a plurality of air-vent holes 2 d. If the seat is covered with moquette or other coarse cloth, it is not necessary to deliberately form such vent holes.
    [0026] Main air-conditioning unit [0026] 1 is a well-known air-mixing type air-conditioner, which includes evaporator 6, heater core 7, air-mixing door 8, and etc, as shown in FIG. 2. Main air-conditioning unit 1 controls air-mixing door to mix air cooled by evaporator 6 and air heated by heater core 7, thereby providing desired air-conditioned air.
    [0027] Main air-conditioning unit [0027] 1 has a plurality of air supply ports 9-12 and air-switching doors 13 and 14. The plurality of air supply ports includes DEF-port 9, FOOT-port 10, FACE-port 11 and a pair of SIDE-ports 12. Air switching door 13 is a DEF-door that opens or closes DEF-port, and air-switching door 14 is a FACE-FOOT door that opens or closes FOOT-port 10 or FACE-port 11. The pair of SIDE-ports 12 is disposed at opposite (right and left) sides of FACE-port 11. The pair of SIDE ports 12 always opens and, in other words, is not opened or closed by any of air switching doors 13 and 14. Therefore, the air-conditioned air is always supplied from the pair of SIDE-ports 12 irrespective of the air-blow mode being selected.
    [0028] As shown in FIG. 3, cooling-air duct [0028] 4 and warming-air duct 5 merge at the downstream ends thereof to form a joint duct having joint port 15 at the downstream end thereof. Cooling-air duct 4 is connected to SIDE port 12 to conduct air-conditioned air. Warming-air duct 5 is formed in rear FOOT duct 16 and separated from rear FOOT duct 16 by partition 17. Cooling-air duct 4 also can be formed in rear FOOT duct 16 in the same manner. Seat-air-switching door 18 is disposed at the merging portion of cooling-air duct 4 and warming-air duct 5. Seat-air-switching door 18 selectively connects joint port 15 either to cooling-air duct 4 or to warming-air duct 5. As shown in FIG. 5, seat blower unit 3 is comprised of blower case 19, centrifugal fan 20 disposed in blower case 19, fan motor 21 and others. When fan motor 21 rotates centrifugal fan 20, the air-conditioned air of main air-conditioning unit 1 is taken into cooling-air duct 4 or warming-air duct 5.
    [0029] Blower case [0029] 19 has air-conditioned air inlet port 19 a that is connected to joint port 15 via flexible duct 22, air first outlet port 19 b connected to air path 2 c of the seat cushion, second air outlet port 19 c connected to air path 2 c of the seat back and inside-air inlet port 19 d. Inlet-port-switching door 23 is disposed in blower case 19 to selectively open or close air-conditioned air inlet port 19 a or inside-air inlet port 19 d. Vehicle-seat-air condition system S is controlled by ECU 24, as shown in FIG. 5. ECU 24 has a microcomputer, which calculates a target air-blow temperature (TAO) according to set room-temperature, vehicle thermal load such as room temperature, outside temperature, or sun light condition. When seat-air-conditioning switch 26 of a control panel is turned on, ECU 24 controls the rotation speed of fan motor 21 and the positions of air-switching door 18 and inlet-port-switching door 23 according to TAO. Seat-air-conditioning switch 26 can be provided separately for the right front air-conditioning seat switch 26 r with indicator lamp 26 b and the left front air-conditioning seat switch 26 l with indicator 26 a, as shown in FIGS. 6A, 6B and 6C. Indicator lamps 26 a and 26 b indicate on or off state of air-conditioning switches 26 l and 26 r.
    [0030] When seat-air-conditioning switch [0030] 26 is turned on, the rotation speed (or control voltage) of fan motor 21, the positions of air-switching door 18 and inlet-port switching door 23 are calculated according to TAO to provide control signals, which are sent to a motor drive circuit (not shown) and to actuators (not shown) of switching doors 18 and 23. It is possible to use a supplemental TAO specific to the vehicle seat air-conditioning system. In this case, temperature set dial 27 is disposed at the control panel to change the supplemental TAO, as schematically illustrated in FIGS. 6A, 6B and 6C. It is also possible to provide separate temperature set dials 27 respectively for the right and left front seats.
    [0031] Seat-air-switching door [0031] 18 is controlled by ECU 24 according to TAO. If the FACE mode is selected, seat-air-switching door 18 closes warming-air duct 5 and opens cooling-air duct 4. On the other hand, if the FOOT mode is selected, seat-air-switching door 18 opens warming-air duct 5 and closes cooling-air duct 4. Seat-air-switching door 18 also takes a position to mix the air from cooling-air duct 4 and the air from warming-air duct 5 when temperature set dial 27 is turned to change the temperature of the seat-air-conditioned air.
    [0032] Inlet-port-switching door [0032] 23 is controlled according to the condition of the passenger compartment. For example, if the passenger compartment is intended to cool down or warm up in a short time, inlet-port-switching door 23 is controlled to close inside-air inlet-port 19 d and open air-conditioned air inlet-port 19 a. However, if a passenger feels hot, inlet-port-switching door 23 can be manually controlled to change the warm air-conditioned air to the room or inside air.
    [0033] Fan motor [0033] 21 is controlled with the terminal voltage that changes according to TAO. Normally, fan motor 21 is controlled to drive centrifugal fan 20 at a low-level. However, if the passenger compartment is cooled down or warmed up in a short time, fan motor 21 is controlled to drive centrifugal fan 20 before the seat-air-conditioning starts so that the blowing-air speed of the air blowing from seats is, for example, less than 0.4 m/s. As the temperature of the air-conditioned air is cooled down or warmed up, the terminal voltage of fan motor 21 is gradually increased, thereby, to increase the blowing-air speed.
    [0034] Because cooling-air duct [0034] 4 of seat-air-conditioning system S is connected to side port 12, the following effects are provided: (1) air-conditioned air is always supplied to cooling-air duct; (2) the air-conditioned air supplied to cooling air duct 4 does not unexpectedly blow on rear seat passengers; and (3) no door is necessary to add to main air-conditioning unit 1.
    [0035] As a variation, warming air duct [0035] 5 can be omitted if a user does not want the seat-air-conditioned air different from the air-conditioned air supplied from main air-conditioning unit 1. Cooling-air duct 4 can be connected to a portion of main air-conditioning unit 1 other than SIDE port if the air-conditioned air can be supplied from the portion irrespective of the air-blow mode.
    [0036] An electric heater can be disposed at upstream or downstream portion of fan [0036] 20 to supply warm air to cooling-air duct 4 in a short time.
    [0037] It is also possible to control vehicle seat air-conditioning system S separately from main air-conditioning unit by an ECU other than ECU [0037] 24.
    [0038] In the foregoing description of the present invention, the invention has been disclosed with reference to specific embodiments thereof. It will, however, be evident that various modifications and changes may be made to the specific embodiments of the present invention without departing from the broader spirit and scope of the invention as set forth in the appended claims. Accordingly, the description of the present invention is to be regarded in an illustrative, rather than restrictive, sense. [0038]
    权利要求:
    Claims (6)
    [1" id="US-20010004008-A1-CLM-00001] 1. A vehicle seat air-conditioning system for use with a main air-conditioning-unit which operates in one of a plurality of air-blow modes and has an air-conditioned air port for supplying air-conditioned air irrespective of said air-blow modes, said system comprising:
    an air-conditioned air duct connected to said air-conditioned air port for always supplying air-conditioned air from said main air-conditioning unit irrespective of said air-blow modes;
    a seat-air duct, connected to said air-conditioned air duct, for supplying said air-conditioned air to the inside of a seat; and
    means for blowing said air-conditioned air from said seat.
    [2" id="US-20010004008-A1-CLM-00002] 2. A vehicle seat air-conditioning system as claimed in
    claim 1 for use with a main air-conditioning unit which operates in one of a plurality of air blow modes and has a SIDE port for supplying air-conditioned air irrespective of said air mode and a rear FOOT duct, wherein
    said air-conditioned-air duct is connected to said SIDE port.
    [3" id="US-20010004008-A1-CLM-00003] 3. The vehicle seat air-conditioning system as claimed in
    claim 2 , wherein
    said air-conditioned air duct comprises a warming air duct and a cooling-air duct disposed in said rear FOOT duct.
    [4" id="US-20010004008-A1-CLM-00004] 4. The vehicle seat air-conditioning system as claimed in
    claim 3 , wherein said air-conditioned air duct further comprises a seat-air-switching door for selectively connecting one of said warming-air duct and said cooling-air duct to said seat-air duct.
    [5" id="US-20010004008-A1-CLM-00005] 5. The vehicle seat air-conditioning system as claimed in
    claim 1 , wherein
    said means for blowing said air-conditioned air comprises a fan motor, a centrifugal fan driven by said fan motor and a blower case for accommodating said fan motor and said centrifugal fan.
    [6" id="US-20010004008-A1-CLM-00006] 6. The vehicle seat air-conditioning system as claimed in
    claim 5 , wherein
    said means for blowing said air-conditioned air further comprises an inside-air inlet port, air-conditioned air inlet-port and an inlet-port switching door for selectively connecting the inside of said blower case to said inside-air inlet port or said air-conditioned air inlet-port.
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    法律状态:
    2000-12-15| AS| Assignment|Owner name: DENSO CORPORATION, JAPAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:AOKI, SHINJI;KAJINO, YUICHI;YOSHINORI, TAKESHI;REEL/FRAME:011384/0315 Effective date: 20001204 |
    2005-03-09| STCF| Information on status: patent grant|Free format text: PATENTED CASE |
    2008-09-22| FPAY| Fee payment|Year of fee payment: 4 |
    2012-08-29| FPAY| Fee payment|Year of fee payment: 8 |
    2016-09-19| FPAY| Fee payment|Year of fee payment: 12 |
    优先权:
    申请号 | 申请日 | 专利标题
    JP36183799A|JP4337200B2|1999-12-20|1999-12-20|Vehicle seat air conditioning system|
    JP11-361837||1999-12-20||
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