JP2009120079A - Vehicular seat air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicular seat air conditioner capable of maintaining constant seat air conditioning performance even when an occupant moves a seat while eliminating a movable structure member corresponding to seat position fluctuation and being advantageous in space, malfunction, and assembly. <P>SOLUTION: The vehicular seat air conditioner is equipped with a blow duct 7 sending air conditioning air to seat blow fans 3, 4, 5 sending the air conditioning air from an on-vehicle air conditioning unit 6 to seat faces of seats 1, 2 to be seated by occupants. A blowout opening 7a of the blow duct 7 arranged in a seat lower part position of a vehicle body floor 12 and suction openings 3a, 4a, 5a of the seat blow fans 3, 4, 5 arranged in lower face positions of seat cushions 1 are arranged away from each other. When the air conditioning air is blown from the blowout opening 7a of the blow duct 7 toward lower faces of the seat cushions 1, even if there is position movement within a position adjusting range of the seat cushion 1, setting is carried out such that receival of a main stream of the air conditioning air is allowed by the suction openings 3a, 4a, 5a of the seat blow fans 3, 4, 5. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a vehicle seat air conditioner including a blower duct that sends conditioned air from a vehicle-mounted air conditioning unit to a seat blower fan.

  Conventionally, as a vehicle seat air conditioner configured to blow conditioned air from the seat surface, a blower duct that sends conditioned air from an air conditioning unit to just below the seat is provided, and is provided at a blowout port and a seat cushion of the blower duct. There is known one in which a suction port of a seat blower fan is connected by a flexible duct so as to be slidable in the longitudinal direction of the vehicle (for example, see Patent Document 1).

In addition, as a vehicle seat air conditioner configured to blow conditioned air from the seat surface, a blowout grill for sending conditioned air from the air conditioning unit into the passenger compartment is provided on the instrument panel, and provided on the blowout grill and the seat cushion. There has been known one that sucks in air-conditioned air that has been opened to a vehicle interior space without connecting between the seat blowing fans through a suction port of the seat blowing fan (see, for example, Patent Document 2).
JP 2001-30731 A JP 2005-35477 A

  However, in the vehicle seat air conditioner described in Japanese Patent Application Laid-Open No. 2001-30731, it is necessary to set a movable structural member such as a slide-type flexible duct corresponding to a change in seat position under the seat cushion. . For this reason, a large space is required under the seat cushion, and a movable part may cause a failure when the seat moves. Furthermore, it is necessary to connect the blowout port of the air duct provided in the vehicle body and the suction port of the seat air blower fan provided in the seat cushion with a flexible duct, and the assembly of the seat to the vehicle body is reduced. There was a problem.

  Further, in the vehicle seat air conditioner described in Japanese Patent Laid-Open No. 2005-35477, the cold air or the hot air whose temperature is adjusted by the air conditioning unit diffuses from the blowout grill into the vehicle interior. For this reason, the air sucked from the seat blower fan provided in the seat cushion becomes a temperature closer to the passenger compartment temperature than the temperature adjusted by the air conditioning unit, and it blows out from the seat to the occupant. That is, there has been a problem that the original seat air conditioning performance of feeling the temperature-adjusted cold air or hot air with good response cannot be ensured.

  The present invention has been made paying attention to the above-mentioned problem, and eliminates the movable structural member corresponding to the seat position variation, and is advantageous in terms of space, failure and assembling, and provides seat air conditioning performance even when the occupant moves the seat. An object of the present invention is to provide a vehicle seat air conditioner that can be kept constant.

In order to achieve the above object, the present invention includes a sheet blower fan for sending conditioned air to the seat surface of a seat on which a passenger is seated, and a blower duct that sends conditioned air from an in-vehicle air conditioning unit to the seat blower fan. In the vehicle seat air conditioner, the following arrangement / setting is adopted.
The blowout opening of the air duct is disposed at the seat lower position of the vehicle body floor.
The suction port of the seat blower fan is disposed at the lower surface position of the seat cushion of the seat.
The blowout port of the air duct and the suction port of the sheet blower fan are spaced apart.
The suction port of the seat blower fan allows air conditioning air to flow even if there is a position movement within the position adjustment range of the seat cushion when air conditioning air is blown from the blower duct outlet toward the lower surface of the seat cushion. Set to allow mainstream reception.

Therefore, in the vehicle seat air-conditioning apparatus of the present invention, the air outlet of the air duct and the air inlet of the air fan are arranged apart from each other without being connected, so that the sliding flexible duct corresponding to the seat position variation Such a movable structural member is eliminated. This eliminates the need for a large space under the seat cushion, reduces the number of moving parts when the seat moves, and reduces failure. Furthermore, it is not necessary to connect the blowout port of the blower duct and the suction port of the seat blower fan with a flexible duct or the like, and the ease of assembling the seat to the vehicle body floor is improved.
On the other hand, since the air outlet of the air duct and the air inlet of the seat air fan are arranged apart from each other, when the occupant moves the seat back and forth and up and down, the air outlet of the air duct fixed to the vehicle body floor and the air Deviation occurs in the positional relationship of the fan inlets, and the air conditioning performance of the seat cannot be kept constant. On the other hand, when the conditioned air is blown out from the air outlet of the air duct toward the lower surface of the seat cushion, even if there is a position movement within the seat cushion position adjustment range, the air conditioned air is Since the mainstream receiving is set to be permitted, the seat air conditioning performance can be kept constant even when the occupant moves the seat back and forth and up and down.
As a result, it is possible to maintain a constant seat air-conditioning performance even if the occupant moves the seat while eliminating the movable structural member corresponding to the seat position variation and making the space, failure, and assemblability advantageous.

  Hereinafter, the best mode for realizing the vehicle seat air-conditioning apparatus of the present invention will be described based on Examples 1 to 3 shown in the drawings.

First, the configuration will be described.
FIG. 1 is an overall system diagram showing a vehicle seat air conditioner A1 according to the first embodiment.

  As shown in FIG. 1, a vehicle seat air conditioner A1 according to the first embodiment includes a seat cushion 1, a seat back 2, seat blow fans 3, 4 and 5, an air conditioning unit 6, a blow duct 7, and a fan. A casing 8, a fan outlet duct 9, a seat cushion duct 10, a seat back duct 11, a vehicle body floor 12, a vehicle interior space 13, a fan controller 14 (fan control means), and a seat slide position sensor 15 (Seat slide position detecting means).

  The vehicle seat air conditioner A1 is for sending conditioned air to the seat surface of a seat (hereinafter referred to as "seats 1 and 2" when the whole is shown) composed of a seat cushion 1 and a seat back 2 on which an occupant sits. Seat blow fans 3, 4 and 5 and a blow duct 7 for sending conditioned air from the in-vehicle air conditioning unit 6 to the seat blow fans 3, 4 and 5 are provided.

  The seat blower fans 3, 4, and 5 are set in a fan casing 8, and a seat cushion duct 10 and a seatback duct 11 are branched from a fan outlet duct 9 connected to a communication passage of the fan casing 8. The conditioned air is sent to the seat surface through the ducts 9, 10, and 11. The seat cushion duct 10 has a large number of conditioned air outlets on the seat surface side of the seat cushion 1. The seat back duct 11 has a large number of conditioned air outlets on the seat surface side of the seat back 2.

  The air conditioning unit 6 is a unit having a blower fan, an evaporator, a heater core, various doors, etc., not shown, in a unit case. Then, according to the temperature setting operation on the control panel or the selection operation of the blowing mode, a temperature-controlled air is created by mixing cold air and hot air, and this temperature-controlled air is blown out from the grill provided on the instrument panel toward the vehicle interior. . At the same time, in the case of Example 1, the temperature-controlled air is blown out to the seat surface side of the seat cushion 1 through the air duct 7. Note that when the air conditioning unit 6 is activated, whether the temperature adjustment air is blown out to the seat surface side of the seat cushion 1 or whether the temperature adjustment air blowing is stopped is determined by a switch operation of a passenger sitting on the seats 1 and 2. It may be selectable.

  The blower duct 7 has its blowout port 7 a disposed at the seat lower position of the vehicle body floor 12. Further, the suction ports 3 a, 4 a, 5 a of the seat blowing fans 3, 4, 5 are arranged at the lower surface position of the seat cushion 1. As shown in FIG. 1, the air outlet 7a of the air duct 7 and the air inlets 3a, 4a and 5a of the sheet air fans 3, 4 and 5 are spaced apart from each other as shown in FIG. That is, the air outlet 7 a of the air duct 7 and the air inlets 3 a, 4 a, 5 a of the seat air blowing fans 3, 4, 5 are opened to the vehicle interior space 13.

  The suction ports 3 a, 4 a, 5 a of the seat blow fans 3, 4, 5 are positioned at the position of the seat cushion 1 when conditioned air is blown out from the blow port 7 a of the blow duct 7 toward the lower surface of the seat cushion 1. Even if there is a position movement within the adjustment range, it is set to allow the mainstream reception of the conditioned air. In the first embodiment, as shown in FIG. 1, the seat cushion is selected by selecting a main suction fan that receives the conditioned air most strongly from the air duct 7 among the three seat air blowing fans 3, 4, and 5. Even if there is a position movement within the position adjustment range of 1, the setting is such that the mainstream of the conditioned air is received.

  The fan controller 14 selects a main suction fan that receives the conditioned air from the air duct 7 most strongly according to the position of the seat cushion 1 among the three seat ventilation fans 3, 4, and 5. Control is performed so as to make a difference in the rotation speed between the fan rotation speed of the fan and the other sheet blower fans.

  In the first embodiment, the air outlet 7a of the air duct 7 is arranged to blow out the conditioned air from the position below the seat of the vehicle body floor 12 in the upward direction. For this reason, the position of the sheet blower fans 3, 4, 5 that receives the conditioned air sent from the blower duct 7 does not vary due to the sheet lifter position variation. Accordingly, only the seat slide position sensor 15 for detecting the position of the seat back 1 with respect to the vehicle body floor 12 in the vehicle front-rear direction is provided.

  The fan controller 14 for inputting the seat slide position information from the seat slide position sensor 15 includes a blowing wind receiving position calculation unit 14a, a main suction fan selection unit 14b, and a fan rotation speed control unit 14c. The blowing wind receiving position calculation unit 14 a calculates the blowing wind receiving position based on the seat slide position detected by the seat slide position sensor 15. The main suction fan selection unit 14b selects a main suction fan according to the calculated blowing wind receiving position. The fan rotation speed control unit 14c operates the selected main suction fan at a rotation speed that obtains the necessary air volume for seat air conditioning, and connects the sheet blowing fans other than the main suction fan with the wind pressure from the main suction fan. A control command for operating at a rotational speed that generates a wind pressure that cancels out in the vicinity of the passage is output to the fan motors of the sheet blower fans 3, 4, and 5.

  FIG. 2 is a schematic diagram showing a structure around three seat blowing fans and a flow of air in the vehicle seat air conditioner A1 according to the first embodiment.

  The three sheet blower fans 3, 4, 5 constitute fan chambers 18, 19, 20 for each of the sheet blower fans 3, 4, 5 by partitioning the fan casing 8 by partition walls 16, 17. The fan chambers 18, 19, and 20 are connected by a single air passage 21 that is connected to the seat cushion duct 10 and the seat back duct 11.

  The fan chambers 18, 19, 20 and the ventilation path 21 are communicated with each other through communication paths 22, 23, 24.

Next, the operation will be described.
The operation of the vehicle seat air-conditioning apparatus A1 of the first embodiment is divided into “seat air-conditioning operation”, “air-conditioning wind opening operation”, “stable seat air-conditioning performance ensuring operation”, and “fan rotation speed control operation”. I will explain.

[Seat air conditioning]
The air-conditioning air produced by the air-conditioning unit 6 is blown out from the air outlet 7a of the air-conditioning unit 6 through the blow-out opening 7a of the air-conditioning unit 6 from the lower side of the seat cushion 1 directly above. At this time, for example, as shown in FIG. 1, if the central seat blower fan 4 is selected as the main suction fan among the three seat blower fans 3, 4, 5, the rotational speed to obtain the necessary air volume The conditioned air from the blowout port 7a of the blower duct 7 is sucked in by the suction port 4a of the seat blower fan 4 that is operating. The conditioned air sucked from the seat blower fan 4 sequentially passes through the fan chamber 19, the communication path 23, the ventilation path 21, and the fan outlet duct 9, and branches into the seat cushion duct 10 and the seat back duct 11. Then, the air-conditioning air is blown out from the seat surface of the seat cushion 1 toward the occupant through the seat cushion duct 10, and passes through the seat back duct 11 toward the occupant from the seat surface of the seat back 2. Air-conditioned air is blown out.

  Therefore, for example, during a warm-up in which the vehicle enters the vehicle in winter and starts the heating operation by the air conditioning unit 6, the occupant seated on the seats 1 and 2 uses the warm air blown from the seat surface of the seat cushion 1 to the thighs and buttocks In response to the warm air blown from the seat surface of the seat back 2 on the back and waiting until the entire vehicle interior space 13 is warmed by the air conditioning unit 6, the user feels a good heating feeling with high responsiveness. be able to.

  Further, for example, during the cool-down period when the vehicle enters the vehicle and starts the cooling operation by the air conditioning unit 6 in the summer, the occupant seated on the seats 1 and 2 causes the cool air blown from the seat surface of the seat cushion 1 to the thighs and buttocks Compared to waiting until the entire interior space 13 is cooled by the air conditioning unit 6, it is possible to receive cool air blown from the seat surface of the seat back 2 on the back and experience a good cooling feeling with high responsiveness. it can.

[Air-conditioned interior space opening effect]
In the vehicle seat air conditioner A1 according to the first embodiment, the air outlet 7a of the air duct 7 and the air inlets 3a, 4a, and 5a of the air blowing fans 3, 4, and 5 are arranged apart from each other without being connected. ing. For this reason, a movable structural member such as a slide-type flexible duct employed in the prior art described in Japanese Patent Application Laid-Open No. 2001-30731 or the like is used as a vehicle seat air conditioner A1 so as to correspond to the seat position variation. Can be lost.

  Therefore, a large space is not required under the seat cushion 1, and movable parts are reduced when the seat is moved, so that failure can be reduced. Further, there is no need to connect the air outlet 7a of the air duct 7 and the air inlets 3a, 4a and 5a of the sheet air fans 3, 4 and 5 with a flexible duct or the like, so that the seats 1 and 2 can be assembled to the vehicle body floor 12. Will improve.

[Ensuring stable seat air conditioning performance]
In the vehicle seat air conditioner A1 according to the first embodiment, the air outlet 7a of the air duct 7 and the air inlets 3a, 4a, and 5a of the air blowing fans 3, 4, and 5 are spaced apart and opened to the vehicle interior space 13. Therefore, when the occupant moves the seats 1 and 2 in the front-rear direction and the up-and-down direction, the air outlet 7a of the air duct 7 fixed to the vehicle body floor 12 and the air inlets 3a of the seat air fans 3, 4 and 5 are provided. Deviation occurs in the positional relationship between 4a and 5a, and the seat air conditioning performance cannot be kept constant.

  On the other hand, when the conditioned air is blown out from the blowout port 7a of the blower duct 7 toward the lower surface of the seat cushion 1, the seat blower fans 3 and 4 are moved even if the position of the seat cushion 1 is moved within the position adjustment range. , 5 intake ports 3a, 4a, 5a are set to allow the mainstream reception of conditioned air. That is, three suction ports 3 a, 4 a, 5 a of the seat blowing fans 3, 4, 5 are set in a row in the vehicle front-rear direction at the lower surface position of the seat cushion 1.

  Therefore, even if the occupant moves the seats 1 and 2 up and down and up and down, the main suction fan that receives the blown air-conditioning wind from the blowout port 7a of the blower duct 7 most strongly is received from the three seat blower fans 3 and 4 and 5. By selecting and making the rotation speed of the fan higher than that of other fans, the conditioned air is efficiently sucked into the seat. As a result, even if the seats 1 and 2 are moved back and forth and up and down, the air conditioning performance of the seat can be kept constant.

[Fan speed control action]
The fan rotation speeds of the seat blower fans 3, 4, and 5 are controlled by the fan controller 14 that inputs the seat slide position information from the seat slide position sensor 15. In other words, the blowing air receiving position calculation unit 14 a of the fan controller 14 calculates the receiving position of the air-conditioning blowing air from the outlet 7 a of the air duct 7 based on the seat slide position detected by the seat slide position sensor 15. Then, in the main suction fan selection unit 14b of the fan controller 14, the main suction fan that receives the conditioned air most strongly is selected based on the calculated position of the conditioned air blowing air from the outlet 7a of the air duct 7. Then, the fan rotation speed control unit 14c of the fan controller 14 outputs a control command for operating the selected main suction fan fan motor at the rotation speed for obtaining the necessary air volume in the seat air conditioning. At the same time, a control command for operating at a rotational speed that generates a wind pressure that cancels the wind pressure from the main suction fan in the vicinity of the communication path is output to the fan motor of the sheet blower fan other than the main suction fan.

  In the main suction fan selection unit 14b, of the three sheet blower fans 3, 4 and 5, the fan having the suction port closest to the extension of the blowout port 7a of the blower duct 7, that is, the air conditioning from the air conditioning unit 6 The seat blower that receives the strongest wind is selected as the main suction fan. The air outlet 7a of the air duct 7 of the first embodiment is set at a fixed position of the vehicle body floor 12 and facing upward. For this reason, the positional relationship between the air outlet 7a of the air duct 7 and the air inlets 3a, 4a, 5a of the sheet blower fans 3, 4, 5 does not vary depending on the seat lifter position, but varies only depending on the seat slide position. Therefore, by detecting the position change of the seats 1 and 2 in the vehicle front-rear direction by the seat slide position sensor 15, it is possible to select a main suction fan that receives the strongest conditioned air.

Next, an explanation will be given of the action of preventing the air-conditioning air sucked from the main suction fan, which receives the strongest air-conditioning air from the blower duct 7 and has the highest rotational speed, from leaking to the outside from the other seat air-blowing fans. To do.
FIG. 2 shows a peripheral structure and air flow when the sheet blowing fan 4 is the main suction fan among the three sheet blowing fans 3, 4, and 5. The sheet blowing fans 3 and 5 other than the sheet blowing fan 4 have a wind pressure (hatched arrow in FIG. 2) generated by the conditioned air from the central sheet blowing fan 4 near the entrance to the ventilation path 21 (near the communication paths 22 and 24). It is rotated at a rotational speed (a rotational speed lower than that of the sheet blower fan 4) that generates a wind pressure just enough to cancel (the white arrow in FIG. 2). This counteracting action by the opposing wind pressure can prevent the movement of air from the sheet blowing fans 3 and 5 to the ventilation path 21 and efficiently conveys the conditioned air from the sheet blowing fan 4 in the center to the inside of the seat. It becomes possible.

  For this reason, for example, as shown in FIG. 2, the conditioned air sucked into the seat from the suction port 4a of the sheet blowing fan 4 which is the main suction fan is drawn from the suction ports 3a and 5a of the other sheet blowing fans 3 and 5. It is possible to prevent reverse flow and discharge into the passenger compartment. This is because the backflow of the air sucked and discharged from the vehicle interior space 13 by the other air blowing fans 3 and 5 and the air-conditioning air discharged by the air blowing fan 4 are balanced in the vicinity of the communication passages 22 and 24 and no wind is generated. By creating the same effect as when the shutter is closed.

  In the first embodiment, the respective sheet blower fans 3, 4, and 5 are arranged so as to be separated by fan chambers 18, 19, and 20 by independent rooms. For this reason, the air movement between the fan chambers 18, 19, and 20 is restricted, and the air sucked from the sheet blower fan that receives the strongest wind from the air conditioning unit 6 without mixing the air having different temperatures is mixed with other air. It is possible to prevent the air from flowing backward from the sheet blower fan.

Next, the effect will be described.
In the vehicle seat air conditioner A1 of the first embodiment, the effects listed below can be obtained.

  (1) The air blower 3, 4, 5 for sending conditioned air to the seat surfaces of the seats 1, 2 on which the occupant sits In the vehicle seat air conditioner provided with the air blowing duct 7 to be sent, the air outlet 7a of the air blowing duct 7 is disposed at the lower position of the seat of the vehicle body floor 12, and the air inlets 3a, 4a of the seat air blowing fans 3, 4, 5 are arranged. , 5a are arranged at the lower surface position of the seat cushion 1 of the seats 1, 2, and the air outlet 7a of the air duct 7 and the air inlets 3a, 4a, 5a of the seat air fans 3, 4, 5 are separated from each other. The suction ports 3 a, 4 a, 5 a of the seat blowing fans 3, 4, 5 blow conditioned air from the blowing port 7 a of the blowing duct 7 toward the lower surface of the seat cushion 1. When the seat cushion 1 is released, it is set so as to allow the mainstream reception of air-conditioning air even if the seat cushion 1 moves within the position adjustment range. Even if the occupant moves the seats 1 and 2, the air conditioning performance of the seat can be kept constant.

(2) Three seat blow fans 3, 4 and 5 are provided side by side in the vehicle front-rear direction at the lower surface of the seat cushion 1, and the blow duct 7 of the three seat blow fans 3, 4 and 5 is provided. By selecting the main suction fan that receives the most conditioned air from the seat cushion 1, the seat cushion 1 is set to receive the mainstream conditioned air even if the seat cushion 1 moves within the position adjustment range. It is possible to improve the accuracy of selecting a sheet blower fan that receives the mainstream of conditioned air with respect to fluctuations in the seat position by moving back and forth, and the seat air conditioning performance can also be improved.
Incidentally, the number of seat blow fans set may be two or more. As the number increases, the accuracy of selection of the fan that receives the mainstream of the conditioned air with respect to the seat position variation is improved, and the seat air conditioning performance is also improved.

  (3) The three sheet blowing fans 3, 4 and 5 are partitioned by partition walls 16 and 17 to form fan chambers 18, 19 and 20 for the sheet blowing fans 3, 4 and 5, respectively. 18, 19, 20 are connected by a single air passage 21 connected to the seat cushion duct 10 and the seat back duct 11, so that the movement of air between the fan chambers 18, 19, 20 is limited, and the temperature It is possible to prevent the air sucked from the main suction fan that receives the air-conditioned air from the air-conditioning unit 6 from flowing backward from the other seat blow fans without being mixed with each other.

  (4) Of the three seat blowing fans 3, 4, 5, a main suction fan that receives the conditioned air from the air duct 7 is selected according to the position of the seat cushion 1, and the selected main suction fan is selected. Since the fan controller 14 is provided to make a difference in the rotation speed between the fan rotation speed of the fan and the other sheet blower fans, the seats 1 and 2 are drawn from the suction port of the sheet blower fan that receives the strongest wind from the air conditioning unit 6. It is possible to prevent the conditioned air sucked into the air from flowing backward from the suction ports of other seat blower fans and releasing it into the vehicle interior space 13.

  (5) The fan controller 14 operates the selected main suction fan at a rotational speed that obtains the necessary air volume for seat air conditioning, and connects the air blowing fan other than the main suction fan to the wind pressure from the main suction fan. Since the fan rotation speed control unit 14c is operated at a rotation speed that generates a wind pressure that cancels out in the vicinity of the passage, an effect similar to that when the shutter is closed in the vicinity of the communication passage of the sheet blowing fan other than the main suction fan is produced. The main suction fan can be controlled to a rotational speed that obtains a necessary air volume for seat air conditioning without using a door or the like.

  (6) The air outlet 7a of the air duct 7 is disposed so as to blow the conditioned air in a direction directly above the seat lower position of the vehicle body floor 12, and the position of the seats 1 and 2 relative to the vehicle body floor 12 in the vehicle front-rear direction is detected. A seat slide position sensor 15 is provided, and the fan controller 14 performs a main suction based on the blown wind receiving position calculation unit 14a that calculates the receiving position of the blown wind based on the detected seat slide position, and the calculated blown wind receiving position. And a main suction fan selection section 14b for selecting a fan, so that the air-conditioning wind is most strongly received only by detecting a change in the position of the seats 1 and 2 in the vehicle longitudinal direction with respect to the vehicle body floor 12 by the seat slide position sensor 15. The main suction fan can be selected with high accuracy.

  The second embodiment is an example in which conditioned air is blown in an oblique direction from the air duct, and an opening / closing valve is provided at the position of the communication path between each fan chamber and the ventilation path.

First, the configuration will be described.
FIG. 3 is an overall system diagram illustrating the vehicle seat air conditioner A2 according to the second embodiment. FIG. 4 is a schematic view showing the peripheral structure of the three seat blower fans of the vehicle seat air conditioner A2 according to the second embodiment.

  As shown in FIG. 3, the vehicle seat air conditioner A <b> 2 according to the second embodiment includes a seat cushion 1, a seat back 2, seat blowing fans 3, 4, 5, an air conditioning unit 6, a blowing duct 7, and a fan. A casing 8, a fan outlet duct 9, a seat cushion duct 10, a seat back duct 11, a vehicle body floor 12, a vehicle interior space 13, a fan controller 14 (fan control means), and a seat slide position sensor 15 (Seat slide position detecting means), seat lifter position sensor 25 (seat lifter position detecting means), first electromagnetic valve 26 (open / close valve), second electromagnetic valve 27 (open / close valve), and third electromagnetic valve 28 (open / close) Valve).

  As shown in FIG. 3, the air outlet 7 b of the air duct 7 is arranged to blow out the conditioned air in an oblique direction from the seat lower position of the vehicle body floor 12. This is because, for example, the air duct 7 cannot be disposed directly below the seat cushion 1 due to a problem such as a vehicle layout and the like, and is set from the lower front side of the seat cushion 1 toward the diagonally upper rear side.

  In this case, since the sheet blower fans 3, 4, 5 move up and down and up and down with respect to the direction of the conditioned air from the outlet 7 b of the blower duct 7, the front and back positions of the seat and the up and down position of the seat are detected. It is necessary to select the main suction fan that receives the strongest force. Therefore, as shown in FIG. 3, the seat slide position sensor 15 that detects the position of the seats 1 and 2 with respect to the vehicle body floor 12 in the vehicle longitudinal direction and the position of the seats 1 and 2 with respect to the vehicle body floor 12 are detected. A sheet lifter position sensor 25 is provided.

  The fan controller 14 selects a main suction fan based on the blown wind receiving position calculation unit 14a that calculates the blown wind receiving position based on the detected seat slide position and the seat lifter position, and the calculated blown wind receiving position. A suction fan selector 14b.

  As shown in FIG. 4, the vehicle seat air conditioner A <b> 2 according to the second embodiment includes a first electromagnetic valve at each of the communication paths 22, 23, and 24 between the fan chambers 18, 19, and 20 and the ventilation path 21. 26, a second electromagnetic valve 27, and a third electromagnetic valve 28 are provided.

  As the electromagnetic valves 26, 27, and 28 are set, the fan controller 14 opens the electromagnetic valve of the selected main suction fan, as shown in FIG. 3, and the electromagnetic valves of the seat blowing fans other than the main suction fan. Has a valve control unit 14d for closing. The fan controller 14 has a fan rotation speed control unit 14c that operates the selected main suction fan at a rotation speed that obtains a necessary air volume for seat air conditioning, and stops the sheet blowing fans other than the main suction fan. Since other configurations are the same as those of the first embodiment, the corresponding components are denoted by the same reference numerals and description thereof is omitted.

Next, the operation will be described.
The “main suction fan selection action” and “solenoid valve opening / closing control and fan rotation speed control action” in the vehicle seat air conditioner A2 of the second embodiment will be described. The “seat air-conditioning action”, “air-conditioning wind opening action in the vehicle interior space”, and “stable seat air-conditioning performance ensuring action” are the same as those in the first embodiment, and thus description thereof is omitted.

[Selection of main suction fan]
The selection of the main suction fan when the air duct 7 cannot be set directly below the seat cushion 1 due to problems such as the vehicle layout and is set obliquely upward and rearward from the lower front of the seat cushion 1 will be described.

  In this case, when the sheet blower fans 3, 4, 5 move back and forth with respect to the direction of the conditioned air from the outlet 7 b of the air duct 7, the air conditioned air from the air duct 7 is the most similar to the first embodiment. The main suction fan that receives strongly fluctuates. Even when the seat blower fans 3, 4, and 5 move up and down, the main suction fan that receives the conditioned air from the blower duct 7 most fluctuates. Therefore, it is necessary to select the main suction fan that detects the seat front-rear position and the seat vertical position and receives the conditioned air most strongly.

  On the other hand, in the second embodiment, the seat lifter position sensor 25 is added to the seat slide position sensor 15. Then, the blowing wind receiving position calculation unit 14a of the fan controller 14 calculates the blowing wind receiving position based on the detected seat slide position and seat lifter position. Further, the main suction fan selection unit 14b of the fan controller 14 selects the main suction fan based on the calculated blowout wind receiving position.

  Therefore, even if the seats 1 and 2 are moved and adjusted by the occupant in the front-rear direction and the up-down direction, the seat front-rear position and the seat up-down position are detected by the seat slide position sensor 15 and the seat lifter position sensor 25, respectively. Of the fans 3, 4, 5, the main suction fan that receives the strongest wind can be appropriately selected.

[Solenoid valve opening / closing control and fan speed control]
In the second embodiment, as a method for preventing the movement of air between the sheet blower fans 3, 4, 5, the positions of the communication paths 22, 23, 24 between the fan chambers 18, 19, 20 and the ventilation path 21 are provided. The first electromagnetic valve 26, the second electromagnetic valve 27, and the third electromagnetic valve 28 are provided.

  As the electromagnetic valves 26, 27, and 28 are set, the valve controller 14d of the fan controller 14 opens the electromagnetic valve of the selected main suction fan and closes the electromagnetic valves of the seat blowing fans other than the main suction fan. Control is performed. Then, in the fan rotation speed control unit 14c of the fan controller 14, the selected main suction fan is operated at a rotation speed that obtains the necessary air volume in the seat air conditioning, and the sheet blower fans other than the main suction fan are stopped. Done.

  Therefore, according to the second embodiment, by closing the solenoid valve, the main suction fan that receives the strongest wind from the air conditioning unit 6 can be completely cut off from the other sheet blowing fans. It is possible to prevent the air sucked by the main suction fan from leaking into the vehicle interior space 13 from other seat blowing fans.

  Furthermore, among the three seat blowing fans 3, 4 and 5, only the main suction fan that receives the strongest conditioned air from the blowing duct 7 is operated, and the rotation of the other seat blowing fans is stopped. Compared with the first embodiment in which the three sheet blower fans 3, 4 and 5 are operated, power consumption can be saved.

Next, the effect will be described.
In the vehicle seat air conditioner A2 of the second embodiment, in addition to the effects (1) to (4) of the first embodiment, the following effects can be obtained.

  (7) A seat for detecting the position of the seats 1 and 2 in the vehicle front-rear direction with respect to the vehicle body floor 12 by arranging the air outlet 7b of the air duct 7 in an oblique direction from the seat lower position of the vehicle body floor 12 A slide position sensor 15 and a seat lifter position sensor 25 for detecting the position of the seats 1 and 2 with respect to the vehicle body floor 12 in the vehicle vertical direction are provided, and the fan controller 14 blows out based on the detected seat slide position and seat lifter position. Since it has a blowout wind receiving position calculation unit 14a for calculating the wind receiving position and a main suction fan selecting unit 14b for selecting a main suction fan based on the calculated blowing wind receiving position, the air duct is more suitable for problems such as vehicle layout. When 7 is set from the lower front of the seat cushion 1 to the diagonally upper rear The main suction fan can be selected with high accuracy based on the seat slide position and the seat lifter position.

  (8) A first solenoid valve 26, a second solenoid valve 27, and a third solenoid valve 28 are provided at the positions of the communication passages 22, 23, 24 between the fan chambers 18, 19, 20 and the ventilation path 21, The fan controller 14 opens the solenoid valve of the selected main suction fan, closes the solenoid valve of the seat blowing fan other than the main suction fan, and the selected main suction fan in the seat air conditioning. A fan rotation speed control unit 14c that operates at a rotation speed that obtains the necessary air volume and stops the sheet blower fans other than the main suction fan, so that the main suction fan that receives the strongest wind from the air conditioning unit 6 It is possible to completely shut off from the seat blower fan, and it is possible to prevent the sucked air from leaking from the other seat blower fans to the vehicle interior space 13 more than in the first embodiment.

  The third embodiment is an example in which a plurality of seat blowing fans are axial fans, and the main suction fan is selected based on the detected fan rotation while the fans are stopped.

First, the configuration will be described.
FIG. 5 is an overall system diagram illustrating the vehicle seat air conditioner A3 according to the third embodiment.

  As shown in FIG. 5, the vehicle seat air conditioner A <b> 3 according to the third embodiment includes a seat cushion 1, a seat back 2, seat blowing fans 3 ′, 4 ′, 5 ′, an air conditioning unit 6, and a blowing duct 7. A fan casing 8, a fan outlet duct 9, a seat cushion duct 10, a seat back duct 11, a vehicle body floor 12, a vehicle interior space 13, a fan controller 14 (fan control means), and a fan rotation And a sensor 35 (fan rotation detecting means).

  The three sheet blowing fans 3 ′, 4 ′, and 5 ′ are axial fans that rotate by receiving wind, such as a propeller fan.

  The fan rotation sensor 35 detects fan rotation caused by conditioned air blown out from the air conditioning unit 6 through the air duct 7 while the three sheet blowing fans 3 ′, 4 ′, 5 ′ are stopped. As the fan rotation sensor 35, an electrical rotation sensor such as a tachometer generator or a pulse generator is used.

  The fan controller 14 selects a seat blower fan having the highest fan rotation speed among the three fan motors as a main suction fan based on the fan rotation detected by the fan rotation sensor 35. 14b. Further, the fan rotation speed control unit 14c operates the selected main suction fan at a rotation speed that obtains a necessary air volume for seat air conditioning. In the case of a doorless structure as in the first embodiment, the seat blowing fan other than the main suction fan is operated at a rotational speed that generates a wind pressure that cancels out the wind pressure from the main suction fan in the vicinity of the communication path. When the check valve is provided as in the second embodiment, the seat blower fans other than the main suction fan are stopped. That is, the fan controller 14 according to the third embodiment omits the blowing wind receiving position calculation unit 14a according to the first and second embodiments.

  Since other configurations are the same as those of the first embodiment, the corresponding components are denoted by the same reference numerals and description thereof is omitted.

Next, the operation will be described.
The “selecting action of the main suction fan” in the vehicle seat air conditioner A3 of the third embodiment will be described. The “seat air-conditioning action”, “air-conditioning wind opening of the vehicle interior space”, “stable seat air-conditioning performance ensuring action” and other actions are the same as those in the first and second embodiments, so the description is omitted. To do.

[Selection of main suction fan]
In Example 3, an axial fan that can be easily rotated by wind from the lower side of the seat, such as a propeller fan, is selected as the three seat blowing fans. As described above, since the axial fan is selected, when the air conditioner is started, the fan rotation sensor 35 recognizes the sheet blowing fan having the highest number of rotations. It can be determined whether the conditioned air from the air duct 7 of the air conditioning unit 6 is most strongly received. In this case, since it is not necessary to detect the sheet position, the sheet slide position sensor 15 and the sheet lifter position sensor 25 used in the first and second embodiments are not necessary.

Next, the effect will be described.
In the vehicle seat air conditioner of the third embodiment, in addition to the effects (2) to (4) of the first embodiment, the following effects can be obtained.

  (9) The three sheet blowing fans 3 ′, 4 ′, 5 ′ are axial fans that rotate by receiving wind, and the three sheet blowing fans 3 ′, 4 ′, 5 ′ are stopped. A fan rotation sensor 35 for detecting fan rotation is provided, and the fan controller 14 has a main suction fan selection unit 14b for selecting a main suction fan based on the detected fan rotation. Can be replaced with an electrical rotation sensor, and the structure can be simplified.

  As mentioned above, although the vehicle seat air conditioner of the present invention has been described based on the first to third embodiments, the specific configuration is not limited to these embodiments, and each claim of the claims Design changes and additions are permitted without departing from the spirit of the invention according to the paragraph.

  In the first to third embodiments, an example in which three seat blow fans are arranged in the vehicle front-rear direction and the mainstream receiving of the conditioned air is permitted by the suction port of the seat blow fan is shown. You may make it arrange | position a sheet | seat ventilation fan, or four or more sheet | seat ventilation fans. Further, as the seat blower fan, one seat blower fan is arranged so as to be movable in the vehicle front-rear direction by an actuator with respect to the seat cushion, and the position of one seat blower fan in the vehicle front-rear direction is moved in accordance with the seat adjustment operation. It is good also as an example which does not change the positional relationship with a ventilation duct. In addition, a gap is set without overlapping the air outlet of the air duct and the suction port of one seat air fan set in the seat cushion, and the opening shape of the air inlet of the seat air fan is set in the vehicle longitudinal direction. It is good also as opening shapes, such as a rectangle, an ellipse, and an ellipse which make a side a long side.

  In the second embodiment, an example in which an electromagnetic valve is used as an on-off valve has been described. However, a backflow prevention valve (one-way valve) that allows only the flow to the seat side may be provided. In this case, electrical valve control is not required because backflow is prevented by mechanical valve operation.

  In short, the air outlet of the air duct arranged at the lower position of the seat on the vehicle floor and the air inlet of the seat air fan arranged at the lower surface of the seat cushion of the seat are opened to the vehicle interior space without being connected. When air-conditioning air is blown out from the air outlet toward the lower surface of the seat cushion, the main airflow of the air-conditioning air can be received by the air inlet of the seat fan even if the seat cushion moves within the position adjustment range. The specific configuration is not limited to the first embodiment.

  In Examples 1-3, although the example which applies the vehicle seat air conditioner of the present invention to the front seat (driver's seat and front passenger seat) of the car was shown, the second row and the third row of the one box car etc. The present invention can be applied to a rear seat, and can also be applied to a seat of a railway vehicle other than an automobile. In short, the present invention can be applied to any vehicle seat air conditioner provided with a seat blower fan for sending conditioned air to the seat surface of a seat on which a passenger is seated and a blower duct for sending conditioned air from an in-vehicle air conditioning unit to the seat blower fan. .

1 is an overall system diagram showing a vehicle seat air conditioner A1 according to Embodiment 1. FIG. It is the schematic which shows the three sheet ventilation fan periphery structure of the vehicle seat air conditioner A1 of Example 1, and the flow of air. It is a whole system figure which shows vehicle seat air conditioner A2 of Example 2. FIG. It is the schematic which shows the three sheet | seat ventilation fan periphery structure of the vehicle seat air conditioner A2 of Example 2. FIG. It is a whole system figure which shows vehicle seat air conditioner A3 of Example 3.

Explanation of symbols

A1, A2, A3 Vehicle seat air conditioner 1 Seat cushion 2 Seat back 3, 4, 5, 3 ', 4', 5 'Seat blower fans 3a, 4a, 5a Suction port 6 Air conditioning unit 7 Blower ducts 7a, 7b Port 8 Fan casing 9 Fan outlet duct 10 Seat cushion duct 11 Seat back duct 12 Body floor 13 Car interior space 14 Fan controller (fan control means)
14a Blow wind receiving position calculation unit 14b Main suction fan selection unit 14c Fan rotation speed control unit 14d Valve control unit 15 Seat slide position sensor (seat slide position detection means)
16, 17 Bulkhead 18, 19, 20 Fan chamber 21 Ventilation path 22, 23, 24 Communication path 25 Sheet lifter position sensor (sheet lifter position detection means)
26 1st solenoid valve (open / close valve)
27 Second solenoid valve (open / close valve)
28 3rd solenoid valve (open / close valve)
35 Fan rotation sensor (fan rotation detection means)

Claims (9)

In a vehicle seat air conditioner provided with a seat blower fan for sending conditioned air to the seat surface of a seat on which a passenger sits, and a blower duct for sending conditioned air from an in-vehicle air conditioning unit to the seat blower fan,
The air outlet of the air duct is arranged at the seat lower position of the vehicle body floor,
The suction port of the seat blowing fan is disposed at the lower surface position of the seat cushion of the seat,
The blowout port of the blower duct and the suction port of the sheet blower fan are arranged apart from each other,
The suction port of the seat blower fan allows air conditioning air to flow even if there is a position movement within the position adjustment range of the seat cushion when air conditioning air is blown from the blower duct outlet toward the lower surface of the seat cushion. A vehicle seat air conditioner characterized in that the mainstream receiving is allowed. The vehicle seat air conditioner according to claim 1,
A plurality of the seat blowing fans are arranged side by side in the vehicle front-rear direction of the lower surface position of the seat cushion,
By selecting the main suction fan that receives the most conditioned air from the air duct among the plurality of seat blast fans, the mainstream of the conditioned air even if there is a position shift within the position adjustment range of the seat cushion. The vehicle seat air conditioner is characterized in that it is set to receive the vehicle. In the vehicle seat air conditioner according to claim 2,
The plurality of sheet blowing fans constitute a fan chamber for each sheet blowing fan by partitioning with a partition wall,
Each of the fan chambers is connected by a single air passage connected to a seat cushion duct and a seat back duct. In the vehicle seat air conditioner according to claim 2 or 3,
Of the plurality of seat blow fans, select a main suction fan that receives the most conditioned air from the blow duct according to the position of the seat cushion, the number of rotations of the selected main suction fan, and other A vehicle seat air-conditioning apparatus provided with fan control means for providing a difference in rotational speed with a seat blower fan. In the vehicle seat air conditioner according to claim 4,
The fan control means operates the selected main suction fan at a rotational speed that obtains a necessary air volume for seat air conditioning, and sets the air blowing fan other than the main suction fan to bring the wind pressure from the main suction fan near the communication path. A vehicle seat air conditioner having a fan rotation speed control unit that operates at a rotation speed that generates a wind pressure that cancels out. In the vehicle seat air conditioner according to claim 4 or 5,
The air outlet of the air duct is arranged to blow out the conditioned air from the position below the seat on the vehicle body floor,
A seat slide position detecting means for detecting a position of the seat in the vehicle longitudinal direction with respect to the vehicle body floor;
The fan control means includes a blowing wind receiving position calculating unit that calculates a receiving position of the blowing wind based on the detected seat slide position, and a main suction fan selecting unit that selects a main suction fan based on the calculated blowing wind receiving position. And a vehicle seat air conditioner. In the vehicle seat air conditioner according to claim 4,
The air outlet of the air duct is arranged to blow out the conditioned air in an oblique direction from the seat lower position of the vehicle body floor,
A seat slide position detecting means for detecting a position of the seat in the vehicle longitudinal direction with respect to the vehicle body floor, and a seat lifter position detecting means for detecting a position of the seat in the vehicle vertical direction with respect to the vehicle body floor;
The fan control means includes a blowing wind receiving position calculation unit for calculating a receiving position of the blowing wind based on the detected seat slide position and seat lifter position, and a main suction fan for selecting a main suction fan based on the calculated blowing wind receiving position. And a vehicle air conditioner. In the vehicle seat air conditioner according to claim 7,
An opening / closing valve is provided at a position of the communication path between each fan chamber and the ventilation path,
The fan control means needs a valve control unit that opens the opening / closing valve of the selected main suction fan and closes the opening / closing valve of the seat blowing fan other than the main suction fan, and the selected main suction fan for seat air conditioning. A vehicle seat air-conditioning apparatus, comprising: a fan rotation speed control unit that operates at a rotation speed for obtaining an air volume and stops a sheet blower fan other than the main suction fan. In the vehicle seat air conditioner according to any one of claims 2 to 4,
The plurality of sheet blowing fans are axial fans that rotate by receiving wind,
Fan rotation detection means for detecting fan rotation is provided while the plurality of sheet blowing fans are stopped,
The vehicle seat air conditioner characterized in that the fan control means has a main suction fan selection unit that selects a main suction fan based on the detected fan rotation.

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