JP4837984B2 - Air conditioner for automobile - Google Patents

Description

  The present invention relates to an automotive air conditioner that blows out conditioned air whose temperature is adjusted independently to a front seat side and a rear seat side.

  A conventional automobile air conditioner of this type is disclosed in Patent Document 1. As shown in FIG. 15, the automotive air conditioner 100 includes an evaporator 103 and a heater core 104 that are disposed in an air passage 102 in an air conditioning case 101. The downstream side of the evaporator 103 in the air passage 102 passes through the front-seat cold air passage 102 a that bypasses the upper portion of the heater core 104, the front-seat hot air passage 102 b that passes through substantially the upper portion of the heater core 104, and the lower portion of the heater core 104. The rear seat hot air passage 102c is branched and the rear seat cold air passage 102d bypasses the lower portion of the heater core 104.

  At the upper end of the heater core 104, a front seat air mix door 105 that adjusts the air blowing ratio to the front seat cool air passage 102a and the front seat hot air passage 102b is rotatably provided. The front-seat cold air passage 102a and the rear-seat hot air passage 102b merge downstream, and the front seat defroster opening 106 leading to the front seat defroster outlet (not shown) and the front seat A front seat vent opening 107 leading to a vent outlet (not shown) and a front seat foot opening 108 leading to a front seat foot outlet (not shown) are opened. The front seat defroster opening 106 is opened and closed by a front seat defroster door 109. The front seat vent opening 107 and the front seat foot opening 108 are opened and closed by a front seat vent / foot switching door 110.

  A rear seat air mix door 111 is rotatably supported at the lower end of the heater core 104. A rear seat auxiliary air mix door 111a is rotatably supported downstream of the heater core 104. And the ventilation ratio to the rear-seat warm air path 102c and the rear-seat cold air path 102d is adjusted by the rear-seat air mix door 111 and the rear-seat auxiliary air-mix door 111a.

  The warm air passage 102c for the rear passenger seat and the cold air passage 102d for the rear seat merge downstream, and the air passage 112 for the rear seat is connected to this junction. A rear seat assist air blower 113 is disposed in the rear seat air passage 112. Further downstream of the rear seat assist blower 113 is branched into a rear seat vent (face) passage 114 and a rear seat foot passage 115. The rear seat vent (face) passage 114 communicates with a rear seat vent outlet (not shown) and is opened and closed by a rear seat vent door 116. The rear seat foot passage 115 communicates with a rear seat foot outlet (not shown) and is opened and closed by a rear seat foot door 117.

  In the above-described configuration, the ratio of the cool air and the hot air corresponding to the position of the front seat air mix door 105 is guided to the front seat cool air passage 102a and the front seat hot air passage 102b. The conditioned air is blown out from a desired front seat outlet (not shown) through desired openings 106, 107, 108 on the front seat side in accordance with the blowing mode.

  Further, warm air and cold air in a proportion corresponding to the positions of the rear seat air mix door 111 and the rear seat auxiliary air mix door 111a are assisted by the air blowing force of the rear seat assist blower 113 to the rear seat air passage 112. Led. The warm air and the cool air guided to the rear seat air passage 112 are air-mixed in the process of passing through the rear seat air fan 113 and the rear seat air passage 112 to obtain an air-conditioning air having a desired temperature. Is blown out from a desired rear seat outlet (not shown) through the desired passages 114 and 115 on the rear seat side in accordance with the blowing mode.

As described above, according to the conventional example, it is possible to blow the conditioned air whose temperature is independently adjusted to the front seat side and the rear seat side in the vehicle interior.
Japanese Patent Laid-Open No. 2005-199978

  However, in the conventional automobile air conditioner 100, the cold air and the hot air guided to the rear seat air passage 112 are air-mixed in the process of passing through the rear seat air fan 113 or the rear seat air passage 112. The air-conditioning air has a predetermined temperature. Therefore, in the rear seat side bi-level blowout mode, the conditioned air of the same temperature is blown out from the rear seat vent outlet (not shown) and the rear seat foot outlet (not shown). It is not possible to blow out conditioned air with a difference. In other words, in the intermediate period between summer and winter, for example, cold head heat can be said to be a comfortable environment for the passenger compartment, but there is a problem that such a comfortable environment in the intermediate period cannot be created on the back seat side. .

  SUMMARY OF THE INVENTION An object of the present invention is to provide an automotive air conditioner that can create a passenger cabin environment with cold head heat on the rear seat side.

The invention according to claim 1 that achieves the above object includes a hot air passage for a rear seat that guides hot air, a cold air passage for a rear seat that guides cool air, a hot air that leads to the hot air passage for the rear seat, and the rear seat A rear-seat air mixing door that adjusts the introduction ratio of the cool air leading to the cool air passage, and a rear-seat assist air blowing means having fans respectively disposed in the rear-seat warm air passage and the rear-seat cold air passage, A downstream side merging space where the rear-seat warm air passage and the rear-seat cold air passage merge on the downstream side from the assist air blowing means for the rear seat , and the downstream-side rear seat while communicating with the downstream merging space A rear seat foot passage that is disposed opposite to a front end of a hot air passage and a rear seat that is disposed opposite to a front end of the cold air passage for the rear seat while communicating with the downstream merge space. be closed and the vent passage, either of the rear seat vent passage and the rear seat foot passage In the position, the warm air from the rear-seat warm air path or the cool air from the rear-seat cold air path is guided to the open passage side, and in the neutral position, the warm air from the rear-seat warm air path is A rear-seat air outlet switching door that guides the cool air from the rear-seat cold air passage to the rear-seat vent passage side on the rear-seat foot passage side, and the rear-seat hot air passage and the rear seat The cold air passage for use is divided into an upstream side and a downstream side across the upstream merging space, and the air mixing door for the rear seat straddles the hot air passage for the rear seat on the upstream side and the cold air passage for the rear seat. In the upstream merging space, the fans of the assist air blowing means for the rear seat are respectively arranged in the downstream hot air passage for the rear seat and the cold air passage for the rear seat, and the air mixing door for the rear seat is located on the upstream side. At the position where one of the hot air passage for the rear seat and the cold air passage for the rear seat is closed, the upstream seat Hot air or cold air from either one of the air passage and the rear-seat cold air passage is guided to both the rear-seat hot air passage and the rear-seat cold air passage on the downstream side, and in the neutral position, the upstream side The hot air from the rear-seat warm air channel is guided to the downstream rear-seat hot air channel, and the cool air from the upstream rear-seat cool air channel is guided to the downstream rear-seat cold air channel. Thus, both fans of the assist air blowing means for the rear seat are driven by a single drive source.

According to the second aspect of the present invention, there is provided a rear-seat warm air path that guides hot air, a rear-seat cool air path that guides cool air , a hot air that leads to the rear-seat hot air path, and a cool air that leads to the rear-seat cool air path. Rear seat air mix doors for adjusting the introduction ratio of the rear seat, assist air blowing means for the rear seats having fans respectively disposed in the hot air passage for the rear seats and the cold air passage for the rear seats, and the assist air blow for the rear seats A downstream merging space where the rear-seat warm air passage and the rear-seat cold air passage merge on the downstream side of the means, a rear-seat foot passage and a rear-seat vent passage communicating with the downstream merging space, At the position where either one of the rear seat foot passage and the rear seat vent passage is closed, the passage side on which both the warm air from the rear seat hot air passage or the cold air from the rear seat cold air passage is opened In the neutral position, the warm air from the warm air passage for the rear seats is transferred to the foot passage side for the rear seats. The cold air from the cold air passage for the rear seat and a seat outlet switching doors after leading to the rear seat vent passage side, the air mixing door for the rear seat is disposed on the downstream side converging space, the Both fans of the rear seat assist air blowing means are independently driven by separate drive sources.

  According to the first aspect of the present invention, in the rear seat side bi-level blowing mode, warm air and cold air in a proportion corresponding to the position of the rear seat air mix door are assisted by the air blowing force of the rear seat assist air blowing means. The hot air passing through the hot air passage for the seat and the cold air passage for the rear seat and passing through the hot air passage for the rear seat is led to the foot passage for the rear seat by the rear seat outlet switching door, and the cold air passage for the rear seat The cold air passing through is guided to the rear seat vent passage by the rear seat outlet switching door. From the above, a passenger cabin environment with head-and-head heat can be created on the rear seat side.

In the rear-seat-side bi-level blowout mode, the rear-seat air mix door is positioned at the neutral position, the hot air is guided to the rear-seat hot air path by the rear-seat air mix door, and the cool air is supplied to the rear-seat air. Since it is led to the cold air passage for the rear seat by the mix door, it is possible to create an environment of head cold foot heat on the rear seat side. Further, at a position where either the upstream rear-seat warm air passage or the rear-seat cold air passage is closed, either the warm air or the cool air is downstream of the rear-seat hot air passage and the rear-seat cold air passage. Therefore, the blowing force of the rear seat assist blowing means can be used effectively.

  Also, the rear seat assist air blowing means can be driven by a single drive source, and the apparatus can be made compact and light.

According to the second aspect of the present invention, in the rear seat side bi-level blowing mode, the warm air and the cool air in a proportion corresponding to the position of the rear seat air mix door are assisted by the air blowing force of the rear seat assist air blowing means. The hot air passing through the hot air passage for the seat and the cold air passage for the rear seat and passing through the hot air passage for the rear seat is led to the foot passage for the rear seat by the rear seat outlet switching door, and the cold air passage for the rear seat The cold air passing through is guided to the rear seat vent passage by the rear seat outlet switching door. From the above, a passenger cabin environment with head-and-head heat can be created on the rear seat side.
Further, in the case of completely closing the one of the rear seat hot air passage and the rear seat Reifuro by rear air mix door can prevent wasteful power consumption by stopping the closed side of the fan.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 6 show a first embodiment of the present invention, FIG. 1 is a schematic configuration diagram of an air conditioner 1A for an automobile, FIG. 2 is a view as viewed from an arrow A in FIG. 1, and FIG. Fig. 4 is a schematic configuration diagram of the automotive air conditioner 1A in the blowing mode, Fig. 4 is a schematic configuration diagram of the automotive air conditioning device 1A in the front seat / rear seat foot blowing mode, and Fig. 5 is the automotive air in the defroster blowing mode. FIG. 6 is a schematic configuration diagram of the air conditioner 1A. FIG. 6 is a schematic configuration diagram of the vehicle air conditioner 1A in the front seat / rear seat bilevel blowing mode.

  As shown in FIGS. 1 and 2, the automotive air conditioner 1 </ b> A includes an air conditioning unit 2 that is disposed substantially at the center of the front part of the passenger compartment. The air conditioning unit 2 has an air passage 3 formed therein. At the most upstream position of the air passage 3, an inside air inlet (not shown) and an outside air inlet (not shown) that are opened and closed by the inside / outside air switching door 4 are provided.

  A blower 5, an evaporator 6a, and a heater core 6b are arranged on the downstream side of both inlets of the air passage 3 from the upstream side in the air blowing direction. The blower 5 sucks the inside air and the outside air into the air passage 3 from the inside air introduction port (not shown) and the outside air introduction port (not shown), and pumps the sucked air downstream. The evaporator 6a cools the blown air to cool air. The heater core 6b heats the air to make warm air. A first partition wall 7 is disposed at a substantially vertical center position of the heater core 6b. The first partition wall 7 partitions the air passage 3 into an upper hot air side and a lower cold air side.

  The air passage 3 above the first partition wall 7 is further branched into a front-seat cool air passage 3a that bypasses the heater core 6b and a front-seat hot air passage 3b that passes through the heater core 6b. The air blowing ratio to the front seat cool air passage 3a and the front seat warm air passage 3b is adjusted by the front seat air mix door 8. The cold air from the front-seat cold air passage 3a and the hot air from the front-seat hot air passage 3b are merged at a joining point downstream of the heater core 6b.

  At this junction, a front seat defroster opening 9 leading to a front seat defroster outlet (not shown), a front seat vent opening 10 leading to a front seat vent outlet (not shown), A front seat foot opening 11 leading to a front seat foot outlet (not shown) is opened. The front seat defroster opening 9 is opened and closed by a front seat defroster door 12. The front seat vent opening 10 and the front seat foot opening 11 are opened and closed by a front seat vent / foot switching door 13.

  The air passage 3 below the first partition wall 7 is further branched into an upstream rear seat hot air passage 3c passing through the heater core 6b and a rear seat cold air passage 3d bypassing the upstream heater core 6b. Yes. A downstream rear-seat hot air passage 16 and a rear-seat cool air passage 17 are formed downstream of the upstream rear-seat hot air passage 3c and the rear-seat cold air passage 3d via an upstream merge space 14. ing. That is, the rear seat hot air passage and the rear seat cold air passage are divided into the upstream side and the downstream side with the upstream side merge space 14 as a boundary. The downstream rear seat hot air passage 16 and the rear seat cold air passage 17 are partitioned by a second partition wall 15.

  A rear seat air mix door 18 is provided in the upstream junction space 14. The rear seat air mix door 18 adjusts the air flow rate to the upstream rear seat hot air passage 3c and the rear seat cold air passage 3d.

  The rear seat air mix door 18 is connected to the upstream rear seat hot air passage 3c and the rear at a position where either the upstream rear seat hot air passage 3c or the rear seat cold air passage 3d is closed. Hot air or cold air from either one of the cold air passages 3d for the seat is led to both the hot air passage 16 for the rear seats on the downstream side and the cold air passage 17 for the rear seats. The hot air from the hot air passage 3c is set to guide the downstream rear seat hot air passage 16 and the upstream rear cool air passage 3d to the downstream rear seat cold air passage 17, respectively. ing.

  Two fans 20 a and 20 b of the rear seat assist blower 20, which is a rear seat assist blower, are arranged in the downstream rear hot air passage 16 and the rear cool air passage 17. Both fans 20a and 20b are boosted and integrally constructed, but the inside thereof is partitioned along a rear seat hot air passage 16 and a rear seat cold air passage 17. Both fans 20a and 20b of this integrated configuration are driven by a motor 20c which is a single drive source.

  At a position downstream of the rear seat assist blower 20, a downstream side merge space 21 where the rear seat hot air passage 16 and the rear seat cold air passage 17 merge is formed. In the downstream side merge space 21, a rear seat foot passage 22 that communicates with a rear seat foot outlet (not shown) and a rear seat vent passage 23 that communicates with a rear seat vent outlet (not shown). Is open. The rear-seat foot passage 22 is disposed in the direction in which the warm air from the rear-seat warm air passage 16 goes straight, and the rear-seat vent passage 23 is opposed to the direction in which the cold air from the rear-seat cold air passage 17 goes straight. .

  The downstream junction space 21 is provided with a rear seat outlet switching door 24 that opens and closes the rear seat foot passage 22 and the rear seat vent passage 23. The rear-seat air outlet switching door 24 is located at the position where either one of the rear-seat foot passage 22 and the rear-seat vent passage 23 is closed, and the rear-seat hot air flow from the rear-seat hot air passage 16 and the rear-seat The cool air from the cool air passage 17 is guided to the open passage side, and in the neutral position, the warm air from the rear seat hot air passage 16 is directed to the rear seat foot passage 22 and the cool air from the rear seat cool air passage 17 is provided. Is set to lead to the rear seat vent passage 23 side.

  Further, at the downstream position of the first partition wall 7, a front seat / rear seat communication door 25 that opens and closes the front seat hot air passage 3 b and the rear seat hot air passage 3 c is provided.

  Next, the operation of the automotive air conditioner 1A will be described. In the front-seat / rear-seat vent-max cool mode, as shown in FIG. 3, the front-seat air mix door 8 is positioned so as to close the front-seat warm air passage 3b and fully open the front-seat cold-air passage 3a. At the same time, the vent / foot switching door 13 for the front seat is located at the open position of the vent opening 10 for the front seat. Accordingly, only the cold air that has passed through the front-seat cold air passage 3a is guided to the front-seat vent opening 10, and the cool air is blown out from the front-seat vent outlet (not shown) into the vehicle interior.

  The rear seat air mix door 18 is located at a position where the upstream rear seat hot air passage 3c is closed and the upstream rear seat cold air passage 3d is fully opened, and the rear seat outlet switching door. Reference numeral 24 denotes an open position of the rear seat vent passage 23. Accordingly, only the cold air that has passed through the upstream rear-seat cold air passage 3d is guided to the rear-seat vent air passage 23 through both the downstream rear-seat hot air passage 16 and the rear-seat cold air passage 17, and the cool air Is blown out from the rear vent vent (not shown) into the passenger compartment.

  In the front-seat / rear-seat vent-hot mode, the front-seat air mix door 8 is positioned so as to close the front-seat cold air passage 3a and fully open the front-seat hot air passage 3b. Only the warm air that has passed through the air passage 3b is guided to the vent opening 10 for the front seat. The rear seat air mix door 18 is located at a position where the upstream rear seat cool air passage 3d is closed and the upstream rear seat warm air passage 3c is fully opened, and the rear seat hot air passage 3c is opened. Only the warm air that has passed is guided to the vent passage 23 for the rear seat.

  In the front seat / rear seat foot-max hot mode, as shown in FIG. 4, the front seat air mix door 8 is located at a position where the cool air passage 3a for the front seat is closed and the warm air passage 3b for the front seat is fully opened. At the same time, the front seat vent / foot switching door 13 is located at the open position of the front seat foot opening 11. Therefore, only the warm air that has passed through the front seat warm air passage 3b is guided to the front seat foot opening 11, and the warm air is blown into the vehicle interior from the front seat foot outlet (not shown).

  The rear seat air mix door 18 is located at a position where the rear seat cold air passage 3d is closed and the rear seat hot air passage 3c is fully opened, and the rear seat air outlet switching door 24 is a rear seat foot passage. 22 in the open position. Accordingly, only the warm air passing through the upstream rear seat hot air passage 3c is guided to the rear seat foot passage 22 through the downstream rear seat hot air passage 16 and the rear seat cold air passage 17, and Wind is blown out into the passenger compartment through a rear vent vent (not shown).

  In the front seat / rear seat foot-cool mode, the front seat air mix door 8 is located at a position where the front seat cool air passage 3b is closed and the front seat cool air passage 3a is fully opened. Only the cold air that has passed through the path 3 a is guided to the front seat foot opening 11. The rear seat air mix door 18 is located at a position where the upstream rear seat hot air passage 3c is closed and the upstream rear seat cold air passage 3d is fully opened, and passes through the rear seat cold air passage 3d. Only the warm air is guided to the rear seat foot passage 22.

  In the defroster-max hot mode, as shown in FIG. 5, the front-seat air mix door 8 is located at a position where the front-seat cold air passage 3a is closed and the front-seat hot air passage 3b is fully opened. The defroster door 12 is located at the open position of the front seat defroster opening 9. Accordingly, the warm air that has passed through the warm air passage 3b for the front seat is guided to the opening 9 for the front seat defroster.

  The rear seat air mix door 18 is located at a position where the rear seat cool air passage 3d is closed and the rear seat hot air passage 3c is fully opened, and the front seat / rear seat communication door 25 is located at the fully open position of the communication passage. To position. In addition, the rear seat assist blower 20 is not driven. Therefore, the warm air that has passed through the upstream rear seat warm air passage 3 c is guided to the front seat defroster opening 9 through the communication path opened by the front seat / rear seat communication door 25. As described above, all the warm air is blown out from the front seat defroster outlet (not shown) into the vehicle interior. Here, since the rear seat assist blower 20 is not driven, only a small amount of warm air flows through the rear seat cool air passage 17.

  In the defroster-cool mode, the front seat air mix door 8 is located at a position where the front seat cool air passage 3b is closed and the front seat cool air passage 3a is fully opened, and passes through the front seat cool air passage 3a. Only the cold air is guided to the front seat defroster opening 9. The rear-seat air mix door 18 is located at a position where the upstream rear-seat warm air passage 3c is closed and the upstream rear-seat cold air passage 3d is fully opened, and the front-seat / rear-seat communication door 25 is provided. Is located at the fully open position of the communication path. Then, the cold air passing through the rear seat cool air passage 3d is guided to the front seat defroster opening 9. As described above, all the warm air is blown out from the front seat defroster outlet (not shown) into the vehicle interior.

  In the front-seat / rear-seat bilevel mode, as shown in FIG. 6, the front-seat air mix door 8 is positioned to open the front-seat cold air passage 3a and the front-seat hot air passage 3b at a predetermined rate. The vent / foot switching door 13 for the front seat is located at the neutral position. Therefore, the cold air passing through the front seat cold air passage 3a and the hot air passing through the front seat hot air passage 3b are both guided to the front seat vent opening 10 and the front seat foot opening 11, and air conditioning at a desired temperature. Wind is blown into the vehicle compartment from a front vent vent (not shown) and a front foot vent (not shown).

  The rear seat air mix door 18 is located at a position where the rear seat hot air passage 3c and the rear seat cold air passage 3d are opened at a predetermined ratio, and the rear seat outlet switching door 24 is located at a neutral position. . Accordingly, the cold air passing through the upstream rear seat hot air passage 3c and the hot air passing through the rear seat cold air passage 3d are assisted downstream by the blowing force of the fans 20a and 20b of the rear seat assist blower 20. The rear seat warm air passage 16 and the rear seat cold air passage 17 are respectively guided to the rear seat hot air passage 16 and the rear seat cold air passage 17.

  Although the warm air and the cold air from the downstream rear-seat warm air passage 16 and the rear-seat cold air passage 17 are slightly mixed when passing through the downstream merge space 21, most of the warm air and the cool air Enters the rear-seat foot passage 22 and the rear-seat vent passage 23 that open in the straight direction, so that substantially warm air is supplied to the rear-seat foot passage 22 and substantially hot air is supplied to the rear-seat vent passage 23. As a result, warm air is blown out from the rear seat foot outlet (not shown), and cold air is blown out from the rear seat vent outlet. From the above, a passenger cabin environment with head-and-head heat can be created on the rear seat side.

  In the first embodiment, the rear-seat warm air passages 3c, 16 and the rear-seat cold air passages 3d, 17 are divided into an upstream side and a downstream side with the upstream side merge space 14 therebetween, and a rear seat air mix door. 18 is arranged in the upstream merging space 14, and the fans 20 a and 20 b of the rear seat assist blower 20 are arranged in the downstream rear seat hot air passage 16 and the rear seat cold air passage 17, respectively. Reference numeral 18 denotes either the upstream rear-seat warm air path 3c or the rear-seat cool air path 3d at a position where either the upstream rear-seat warm air path 16 or the rear-seat cool air path 17 is closed. Hot air or cold air from one side is led to both the downstream rear-seat hot air passage 16 and the rear-seat cold air passage 17, and in the neutral position, warm air from the upstream rear-seat hot air passage 3 c is provided. For the downstream rear seat hot air passage 16 and the cool air from the upstream rear seat cold air passage 3d for the downstream rear seat. Is set to direct the respective air passage 17, both fans 20a, 20b of the rear seat assist fan 20 is configured to drive a single motor 20c.

  Therefore, in the front-seat / rear-seat bi-level blowing mode, the rear-seat air mix door 18 is positioned at the neutral position, and the hot air is guided to the rear-seat hot air passage 16 by the rear-seat air mix door 18 and cool air However, the rear seat air mix door 18 leads the rear seat to the cold air passage 17 for the rear seat. Further, at the position where either the upstream rear-seat warm air passage 3c or the rear-seat cold air passage 3d is closed, either the warm air or the cool air is downstream of the rear-seat hot air passage 16 and the rear seat. Since the air is guided to both the cold air passages 17, the air blowing force of the rear seat assist blower 20 can be effectively used. Further, as in the first embodiment, the rear seat assist blower 20 can be driven by a single motor 20c, and the apparatus can be made compact and lightweight.

  In the first embodiment, at the neutral position of the rear seat outlet switching door 24, the upstream rear seat hot air passage 3c and the downstream rear seat hot air passage 16 and the upstream side are provided. It is configured so that a slight space is formed between the rear seat cool air passage 3d and the downstream rear seat cool air passage 17. For this reason, warm air and cold air are mixed slightly, and hot air and cold air having a moderate temperature difference are blown out. However, when it is desired to blow warm air and cold air having a sufficient temperature difference, at the neutral position of the rear seat outlet switching door 24, the upstream rear seat hot air passage 3c and the downstream rear seat are used. What is necessary is just to comprise so that there may be almost no space between the warm air path 16, and between the upstream rear seat cool air path 3d and the downstream rear seat cool air path 17.

  7 and 8 show a second embodiment of the present invention, FIG. 7 is a schematic configuration diagram of an automotive air conditioner 1B, and FIG. 8 is a view as viewed in the direction of arrow B in FIG.

  Compared with the first embodiment, the automotive air conditioner 1B of the second embodiment is different in that the rear seat assist blower 20 is installed in a posture rotated 90 degrees. That is, in the first embodiment, the fan 20a of the rear seat hot air passage 16 has the upper surface as the intake port, and the fan 20b of the rear seat cool air passage 17 has the lower surface as the intake port. On the other hand, in the rear seat assist blower 20 of the second embodiment, both the fan 20a of the rear seat hot air passage 16 and the fan 20b of the rear seat cold air passage 17 have side surfaces as intake ports.

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

  In the second embodiment, the same operation and effect as in the first embodiment can be obtained.

  9 to 13 show a third embodiment of the present invention, FIG. 9 is a plan view of an automotive air conditioner 1C, FIG. 10 is a back view of the automotive air conditioner 1C, and FIG. C1 (or C1-C2) cross-sectional view, FIG. 12 is a DD cross-sectional view of FIG. 10, and FIG. .

  The automotive air conditioner 1 </ b> C is disposed substantially in the center of the front part of the passenger compartment, and is generally configured by a blower unit (not shown) and the air conditioning unit 2. The blower unit (not shown) sucks outside air or inside air and sends it to the air conditioning unit 2. The air conditioning unit 2 uses the air from a blower unit (not shown) as conditioned air at a desired temperature and distributes the conditioned air. Hereinafter, the configuration of the air conditioning unit 2 will be described in detail.

  As shown in FIGS. 9 to 12, the air conditioning unit 2 has an air passage 3 inside. An air filter 30, an evaporator 6 a, and a heater core 6 b are arranged in this air passage 3 from the upstream side in the air blowing direction.

  The air filter 30 traps and removes dust being blown. The evaporator 6a cools the blown air to cool air. The heater core 6b heats the air to make warm air.

  Moreover, the downstream side of the evaporator 6b of the ventilation path 3 is divided into three in the direction orthogonal to the blowing direction. The three dividing paths have a front seat passage 3A on both sides and a rear seat passage 3B, 3B on the center. FIG. 11 is a cross-sectional view at the position of the front seat passage 3A, and FIG. 12 is a cross-sectional view at the position of the rear seat passage 3B.

  As shown in FIG. 11, the front-seat passage 3A is branched into a front-seat cold air passage 3a that bypasses the heater core 6b and a front-seat hot air passage 3b that passes through the heater core 6b. A front seat air mix door 8 is provided for adjusting the air blowing rate to the cool air passage 3a and the front seat warm air passage 3b. The front-seat cold air passage 3a and the front-seat hot air passage 3b are formed with a junction at the downstream side of the heater core 6b. At this junction, a front seat defroster opening 9 leading to a front seat defroster outlet (not shown), a front seat vent opening 10 leading to a front seat vent outlet (not shown), A front-seat foot opening 11 leading to a front-seat foot outlet (not shown) is opened, a front-seat defroster door 12 that opens and closes the front-seat defroster opening 9, and a front-seat vent A front seat vent door 31 for opening and closing the opening 10 and a front seat foot door 32 for opening and closing the front seat foot opening 11 are provided.

  Then, cool air and hot air in a proportion corresponding to the position of the air mixing door 8 for the front seat are led to the front air cooling air passage 3a and the front air heating air passage 3b, and the air-conditioning air is generated by the air mixing of the cold air and the hot air. Is blown out from a desired front seat side outlet (not shown) through desired openings 9, 10, 11 on the front seat side in accordance with the blowing mode.

  As shown in FIG. 12, the rear-seat passage 3B is branched into an upstream rear-seat cold air passage 3d that bypasses the heater core 6b and an upstream rear-seat hot air passage 3c that passes through the heater core 6b. In addition, an air mixing door 18 for the rear seat is provided for adjusting the ratio of air flow to the cool air passage 3d for the rear seat on the upstream side and the hot air passage 3c for the rear seat.

  The upstream rear cool air passage 3d and the rear hot air passage 3c are upside down as compared to the first embodiment, but the downstream configuration is as shown in FIG. Since the configuration is the same as that of the first embodiment, the same reference numerals are given to the same components and the description thereof is omitted.

  In the third embodiment, substantially the same operations and effects as in the first embodiment can be obtained.

  FIG. 14 is a schematic configuration diagram of an automotive air conditioner 1D according to the fourth embodiment of the present invention.

  As shown in FIG. 14, the automotive air conditioner 1D of the fourth embodiment is different from the first embodiment in the following points.

  That is, the rear-seat warm air passage 3c and the rear-seat cold air passage 3d are not separated into the upstream side and the downstream side as in the first embodiment, and are downstream from the rear seat assist blower 20 from the upstream position of the heater core 6b. It is formed continuously to the position.

  The rear-seat assist air blowing means 20A drives two fans 20a and 20b respectively disposed in both the rear-seat hot air passage 3c and the rear-seat cold air passage 3d, and independently drives the fans 20a and 20b. It is composed of two motors 20c and 20d which are driving sources.

  The rear seat air mix door 18 is provided in the downstream side merge space 21 located downstream of the rear seat assist air blowing means 20A.

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

  In the fourth embodiment, substantially the same operations and effects as in the first embodiment can be obtained.

  In the fourth embodiment, the rear seat air mix door 18 is disposed in the downstream merge space 21, and the fans 20a, 20b of the rear seat assist air blowing means 20A are independent by separate motors 20c, 20d, respectively. It is comprised so that it may drive. Accordingly, when either the rear-seat warm air passage 3c or the rear-seat cold air passage 3d is completely closed by the rear-seat air mix door 18, the closing-side fan 20a (or 20b) is stopped. Control can be performed and waste of power consumption can be prevented.

  In each of the above-described embodiments, the case where the front seat side and the rear seat side blowing mode are the same as in the front seat / rear seat bi-level mode has been described, but the front seat side and the rear seat side have different blowing modes. Even if it exists, this invention is applicable.

  Further, in order to prevent the rear seat from leaking in the defroster blowing mode, a closing door may be provided in the rear seat cold air passage 17.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic block diagram of the air conditioning apparatus for motor vehicles which shows 1st Embodiment of this invention. 1 shows a first embodiment of the present invention and is a view taken in the direction of arrow A in FIG. 1. It is a schematic block diagram at the time of vent blowing mode which shows 1st Embodiment of this invention. It is a schematic block diagram at the time of foot blowing mode which shows 1st Embodiment of this invention. It is a schematic block diagram at the time of the defroster blowing mode which shows 1st Embodiment of this invention. 1 is a schematic diagram illustrating a first embodiment of the present invention and a front seat / rear seat bi-level blowing mode. FIG. It is a schematic block diagram of the air conditioning apparatus for motor vehicles which shows 2nd Embodiment of this invention. FIG. 8 shows a second embodiment of the present invention and is a view taken in the direction of arrow B in FIG. 7. It is a top view of the air harmony device for vehicles showing a 3rd embodiment of the present invention. It is a back view of the air conditioning apparatus for motor vehicles which shows 3rd Embodiment of this invention. FIG. 11 shows a third embodiment of the present invention and is a cross-sectional view taken along line C1-C1 (or line C1-C2) of FIG. FIG. 11 shows a third embodiment of the present invention and is a sectional view taken along the line DD of FIG. 10. It is a schematic block diagram at the time of the front seat / rear seat bilevel blowing mode, showing the third embodiment of the present invention. It is a schematic block diagram of the air conditioning apparatus for motor vehicles based on 4th Embodiment of this invention. It is a schematic block diagram of the air conditioning apparatus for motor vehicles based on a prior art example.

Explanation of symbols

1A to 1D Automotive air conditioner 3 Air passage 3c Rear seat hot air passage 3d Rear seat cold air passage 14 Upstream side confluence space 16 Downstream rear seat hot air passage 17 Downstream rear seat cold air passage 18 Rear seat use Air mix door 20 Rear seat assist blower (rear seat assist blower)
20A Assist air blowing means for rear seat 20a, 20b Fan 20c, 20d Motor (drive source)
21 downstream merge space 22 rear seat foot passage 23 rear seat vent passage 24 rear seat outlet switching door

Claims (2)

A rear-seat warm air path (3c, 16) for guiding the warm air;
A cold air passage for the rear seat (3d, 17) for guiding the cold air;
A rear seat air mix door (18) for adjusting the introduction ratio of the hot air leading to the rear seat hot air passage (3c) and the cold air leading to the rear seat cold air passage (3d);
Rear-seat assist air blowing means (20, 20A) having fans (20a, 20b) respectively disposed in the rear-seat hot air path (3c, 16) and the rear-seat cold air path (3d, 17);
A downstream side merge space (21) where the rear seat hot air passage (16) and the rear seat cold air passage (17) merge downstream of the rear seat assist air blowing means (20, 20A);
A rear-seat foot passage (22) disposed opposite to the downstream-side hot air passage (16) extending downstream while communicating with the downstream-side merge space (21);
A rear-seat vent passage (23) disposed opposite to the downstream side cold-air passage (17) extending in communication with the downstream-side merge space (21);
At a position where one of the rear-seat foot passage (22) and the rear-seat vent passage (23) is closed, hot air from the rear-seat hot air passage (16) or the rear-seat cold air passage The cool air from (17) is guided to the open passage side, and in the neutral position, the warm air from the rear seat warm air passage (16) is directed to the rear seat foot passage (22) and the rear seat. A rear-seat air outlet switching door (24) for guiding the cold air from the cold-air passage (17) to the rear-seat vent passage (23) side ,
The rear-seat warm air passage (3c, 16) and the rear-seat cold air passage (3d, 17) are divided into an upstream side and a downstream side with an upstream merging space (14) interposed therebetween,
The rear seat air mix door (18) is arranged in the upstream merge space (14) so as to straddle the upstream rear seat hot air passage (3c) and the rear seat cold air passage (3d). The fans (20a, 20b) of the seat assist air blowing means (20) are respectively disposed in the downstream rear seat hot air passage (16) and the rear seat cold air passage (17).
The rear seat air mix door (18) is located at the upstream side of the rear rear seat at a position that blocks either the upstream rear seat hot air passage (3c) or the rear seat cold air passage (3d). The hot air or cold air from either the hot air passage (3c) for the seat or the cold air passage (3d) for the rear seat is used as the hot air passage (16) for the rear seat and the cold air passage for the rear seat. In the neutral position, the warm air from the upstream rear-seat warm air channel (3c) is sent to the downstream rear-seat warm air channel (16) at the upstream side. Set so as to guide the cool air from the cool air passage for the rear seat (3d) to the cool air passage for the rear seat (17) on the downstream side,
Both the fans (20a, 20b) of the assist air blowing means (20) for the rear seat are driven by a single drive source (20c). A rear-seat warm air path (3c, 16) for guiding the warm air;
A cold air passage for the rear seat (3d, 17) for guiding the cold air;
A rear seat air mix door (18) for adjusting the introduction ratio of the hot air leading to the rear seat hot air passage (3c) and the cold air leading to the rear seat cold air passage (3d);
Rear-seat assist air blowing means (20, 20A) having fans (20a, 20b) respectively disposed in the rear-seat hot air path (3c, 16) and the rear-seat cold air path (3d, 17);
A downstream side merge space (21) where the rear seat hot air passage (16) and the rear seat cold air passage (17) merge downstream of the rear seat assist air blowing means (20, 20A);
A rear-seat foot passage (22) and a rear-seat vent passage (23) communicating with the downstream merge space (21);
At a position where one of the rear-seat foot passage (22) and the rear-seat vent passage (23) is closed, hot air from the rear-seat hot air passage (16) or the rear-seat cold air passage The cool air from (17) is guided to the open passage side, and in the neutral position, the warm air from the rear seat warm air passage (16) is directed to the rear seat foot passage (22) and the rear seat. A rear-seat air outlet switching door (24) for guiding the cold air from the cold-air passage (17) to the rear-seat vent passage (23) side,
The rear seat air mix door (18) is disposed in the downstream merge space (21),
Both the fans (20a, 20b) of the rear seat assist air blowing means (20A) are independently driven by separate drive sources (20c, 20d), respectively.