JP5024622B2 - Air conditioning unit for vehicles - Google Patents

Description

  The present invention relates to a vehicle air conditioning unit having a structure that can be changed from a standard specification having both cooling and heating functions to a specification for high-temperature areas such as the Middle East having only a cooling function.

As a vehicle air-conditioning unit, for example, as shown in FIG. 1A of Patent Document 1, an air-conditioning apparatus having a structure having both an air-conditioning function is set as a standard specification, and a specification for a high-temperature area such as the Middle East. In such a case, as shown in FIG. 1B of Patent Document 1, the structure is changed to a structure having only a cooling function by removing the heating heat exchanger from the standard air conditioner. In addition, the invention of diverting the standard specification air conditioning unit for high-temperature areas is already known.
JP-A-2005-306302

  On the other hand, when the vehicle air-conditioning unit is designed for high-temperature areas, in order to improve the comfort for passengers on the rear seat side in recent years, in addition to the front vent blowing opening for the front seat, The installation of the rear vent blowing opening for the seat is also required. However, in the structure of the vehicle device disclosed in Patent Document 1, the rear vent blowing opening for the rear seat and the rear seat are newly used for the specification for the high temperature area. As a result, it becomes difficult to divert the case of the standard air conditioning unit to the rear vent blowout opening to the rear vent blowout opening for use, and many additional parts are also required. Has a defect.

  Therefore, the present invention changes from the standard specification of the aspect not having the rear vent blowing flow path and the opening for the rear seat to the high temperature area specification having the passage and opening for the rear vent blowing for the rear seat, An object of the present invention is to provide a vehicle air-conditioning unit that can be used for most parts of the case as it is, with a small number of additional parts, and can be changed.

  An air conditioning unit for a vehicle according to the present invention has an air flow path through which air taken in from an air inlet by a blower flows, a heat exchanger for cooling installed on the air flow path, and a heating function in a case. A heating heat exchanger installed in an installation space on the air downstream side of the cooling heat exchanger in the air flow path, and the cooling heat exchanger or the heating in the air flow path. When the heat exchanger is installed, it has a blowout flow path that constitutes a part of the leeward side part of the heat exchanger for heating, and the blowout flow path is formed on the outer surface of the case on the front surface. A front vent blowing opening for sending air to the seat side, a front foot blowing opening for sending air to the front seat side, and a rear side blowing opening for sending air to the rear seat side are formed. The front vent blowing opening is the leeward side A structure having a vent blowing flow path, a front foot blowing flow path having the front foot blowing opening portion as the most leeward side, and a rear side blowing flow passage having the rear side blowing opening portion as the most downstream side. And the rear side blowing channel is branched from the front foot blowing channel, and is adjacent to the installation space of the heating heat exchanger via a partitioning portion. In the case of having a communication path, it is possible to communicate directly, and in the case of installing the heating heat exchanger, the partition portion does not have the communication path and the windward side of the rear side blowing channel When the heat exchanger for heating is not installed, the partition portion has the communication path and the windward side part of the rear side blowing channel is closed. Features (claims) ).

  In the vehicular air conditioning unit according to the present application, the air flow path forms a differential blowing opening for sending air to the vehicle window side on the outer surface of the case, and the differential blowing opening. A differential blowing passage having the most leeward side, and the differential blowing opening or the differential blowing passage is open when the heating heat exchanger is installed, and the heating In the case where the heat exchanger is not installed, the structure is closed by a closing member that is a separate member from the case (Claim 5).

  Adjust at least the amount of air blown out from the front vent blowout opening and the amount of air blown out from the front foot blowout opening for both the standard specification and the high-temperature specification. The 1st blowing mode switching door for doing is arrange | positioned in the flow path for blowing. In the case of standard specifications, a heat exchanger for heating is installed in the installation space, and an air mix door is arranged between the heat exchanger for heating and the heat exchanger for cooling, so that heat exchange for heating is performed. The ratio of the air passing through the vessel and the air bypassing the heating heat exchanger is adjusted. In the case of this standard specification, a second blow mode switching door for adjusting the amount of air blown from the vent blow opening and the amount of air blown from the differential blow opening is also provided. It arrange | positions in the flow path for blowing. On the other hand, when the specification is for a high temperature area, neither a heat exchanger for heating nor an air mix door is installed, the opening for differential blowing is closed, and the second blowing mode switching door is not installed.

  As a result, when the standard specification is set and the VENT mode is set, the opening degree of the air mix door to the heating heat exchanger side is 0%, and the first blowing mode switching door has a front foot blowing opening. Alternatively, the front foot blowing channel is fully closed, the second blowing mode switching door is fully closed with the differential blowing opening or the differential blowing channel, and the air entering the air channel from the air inlet by the blower is After being cooled by the cooling heat exchanger, it bypasses the heating heat exchanger, reaches the front vent blowing opening from the front vent blowing flow path, and is blown into the vehicle interior. In addition, when the standard specification is set and the B / L mode is set, the opening degree of the air mix door toward the heat exchanger for heating is greater than 0% and less than 100%, and the first blow mode switching door is The front foot blowing opening or the front foot blowing flow path and the front vent blowing opening or the front vent blowing flow path are opened to both, and the second blowing mode switching door is the differential blowing opening or the differential blowing opening. With the blowing channel fully closed, the air that has entered the air channel from the air inlet by the blower is cooled by the cooling heat exchanger, and then part of it is heated through the heating heat exchanger. The other part bypasses the heat exchanger for heating, and the air that has passed through the heat exchanger for heating reaches the opening for front foot blowing from the flow path for blowing the front foot and is blown into the vehicle interior. With It is blown from the rear outlet passage to reach passenger compartment to the opening for the rear air outlet. The air bypassing the heat exchanger for heating reaches the front vent blowing opening from the front vent blowing channel and is blown into the vehicle interior. Further, in the case of the standard specification, when the FOOT mode is set, the opening degree of the air mix door to the heating heat exchanger side is 100%, and the first blow mode switching door has a front vent blow opening or The front vent flow path is fully closed, and the air that has entered the air flow path from the air inlet by the blower is cooled by the cooling heat exchanger, and then all of the air passes through the heating heat exchanger and is heated. The air that has passed through the heat exchanger for heating reaches the front foot blowing opening from the front foot blowing channel and is blown into the vehicle interior and from the rear blowing channel to the rear blowing port. It is blown out into the passenger compartment. That is, in the standard specification, the rear side blowing channel and the rear side blowing opening function as the rear foot blowing channel and the rear foot blowing opening in the B / L mode and the FOOT mode.

  On the other hand, when the specification is for a high temperature area and the VENT mode is set, the first blowing mode switching door fully closes the front foot blowing opening or the front foot blowing flow path. Since the communication path is not blocked by the first blow mode switching door, the air that has entered the air flow path from the air inlet by the blower is cooled by the cooling heat exchanger, and then the front vent from the front vent blow flow path. It reaches the blowout opening and is blown into the vehicle interior, and enters the rear blowout flow path from the installation space of the heat exchanger for heating through the communication passage, and from the rear blowout flow path to the rear side It reaches the blowing opening and is blown into the passenger compartment. When the specification is for high-temperature areas and the B / L mode is set, the first blowing mode switching door is configured to open the front foot blowing opening or the front foot blowing channel and the front vent blowing opening. Alternatively, the air passage opened to both the front vent blowing passage and the communication passage is not blocked by the first blowing mode switching door, so that the air that has entered the air passage from the air inlet by the blower is used for cooling. After being cooled by the heat exchanger, it is blown from the front vent blowing channel to the front vent blowing opening and blown into the vehicle interior, and from the front foot blowing channel to the front foot blowing opening and blown into the vehicle cabin. And enters the rear side blowing channel from the installation space of the heating heat exchanger through the communication passage, and reaches the rear side blowing opening from the rear side blowing channel. It is blown in. Further, when the specification is for a high temperature area and the FOOT mode is set, the first blowing mode switching door is configured to open the front vent blowing opening or the front vent blowing passage and the front foot blowing opening or the front. While the communication path is not blocked by the first blowing mode switching door while being open to both the foot blowing channel, the air that has entered the air channel from the air inlet by the blower is From the blowing channel to the front foot blowing opening, it is blown into the passenger compartment and enters the rear blowing channel from the installation space of the heating heat exchanger via the communication path. The blowout flow path leads to the rear side blowout opening and is blown into the vehicle interior. That is, in the specifications for high-temperature areas, the rear side blowing channel and the rear side blowing opening are the rear vent blowing channel and the rear vent blowing opening in any of the VENT mode, B / L mode, and FOOT mode. Function as.

  However, this vehicle air-conditioning unit was designed to function as a rear foot blowout channel and a rear foot blowout opening in the standard specification for the rear side blowout channel and rear side blowout opening. Then, there is no heat exchanger for heating in the installation space, and cold air enters the rear-side blowing channel from the installation space via the communication path, so the rear vent blowing channel and the rear vent blowing opening are used. It is possible to make it work.

  The partition portion is provided with an opening / closing door that can freely open and close the communication path, so that the opening / closing door closes the communication path and does not have the communication path, and the opening / closing door opens the communication path. Thus, the communication path can be provided (claim 2). This closing door is, for example, a sliding door that slides along the surface on the installation space portion side of the heat exchanger for heating in the partition portion. Further, the windward side portion of the rear side blowing flow path has a rear side blowing flow path forming material forming the rear side blowing flow path in the case as a separate member from the case, and the rear side blowing. A blocking portion that can reach the partition portion is formed on the inner surface of the forming material so as to intersect the air flow path of the rear blowing channel, and the rear blowing material having the blocking portion is attached. Therefore, it is possible to occlude (claim 4).

  As a result, only when the vehicle air conditioning unit has a standard specification that has both a cooling / heating function with a rear foot blowing opening and a cooling function for high-temperature areas with a rear vent blowing opening. In the standard specification, the communication path is closed with an open / close door, and a rear blowing channel forming material that does not have a closed portion is attached, and the windward side of the rear blowing channel is Open and open the open / close door to open the communication path, install the rear-side blowing channel forming material having the blocking part, and close the windward side of the rear-side blowing channel. Therefore, most of the components of the case can be made common between the standard specifications and the specifications for high-temperature areas, and the partitioning section whose communication path can be opened and closed with an open / close door is also made common and closed. Rear side blowing forming material having no part and rear side blowing forming having a blocking part Since suffice only exchange with, fewer the number of additional components.

  Further, the mold for forming the case may be a nested structure, and by adjusting the nesting, a partition part having a communication path may be formed or a partition part having no communication path may be formed ( (3) The adjustment of the nesting corresponds to, for example, replacement, addition, partial removal, etc. of the nesting. And even in this case, the windward side portion of the rear side blowing channel is a rear side blowing channel forming material that forms the rear side blowing channel in the case as a separate member from this case, A closed portion that can reach the partition portion is formed on the inner surface of the rear-side blowing forming material so as to intersect the air flow path of the rear-side blowing flow path, and the rear-side blowing use having the closed portion. It can be closed by attaching a forming material (claim 4).

  As a result, only when the vehicle air conditioning unit has a standard specification that has both a cooling / heating function with a rear foot blowing opening and a cooling function for high-temperature areas with a rear vent blowing opening. In the case of the standard specification, the case is manufactured by adjusting the nesting of the case mold so that a partition portion having no communication path can be formed. Since the case is only manufactured by adjusting the nesting of the mold of the case so that a partition having a passage can be formed, most of the components of the case are shared between the standard specification and the specification for high-temperature areas. It does not require any additional parts for the partition and does not require an investment for a new mold for the production of these additional parts.

  As described above, according to these inventions, the rear-side blowing channel among the air channels formed in the case functions as a rear foot blowing channel in the standard specification having both the cooling and heating functions. In the specifications for high-temperature areas with only the cooling function, cold air always flows from the installation space through the communication path, so that it can function as a rear vent blowout flow path. In the standard specification, the side blowing opening is a rear foot blowing opening from which hot air is blown out, and in the high temperature area specification, it is a rear vent blowing opening from which cold air is blown out. On the other hand, there is no need to add a channel and an opening for blowing cool air for the rear seat. For this reason, the case of the standard specification air conditioning unit having the rear foot blowing opening can be used as it is in the case of the high temperature area specification air conditioning unit having the rear vent blowing opening.

  In particular, according to the second and fourth aspects of the invention, the rear side blowing channel and the rear side blowing opening are made to function as the rear foot blowing channel and the rear foot blowing opening in the standard specification. In the specification for high-temperature areas, when functioning as a rear vent blowout flow path and a rear vent blowout opening, the operation of opening and closing the communication path of the partition part with an open / close door, and the rear side blowout forming material and the blockage Since it is possible to cope with the replacement work with the rear side blowing forming material having the part, the increase in the number of parts can be relatively reduced, and the work for changing the specification is also simple.

  In particular, according to the invention described in claim 3 and claim 4, the vehicle air conditioning unit has a standard specification having both a cooling and heating function including a rear foot blowing opening, Adjusting the nesting of the mold of the case so that a partition without a communication passage can be formed in the standard specification when using only the cooling function for high-temperature areas with an opening for venting on the side. In the case of the specifications for the high temperature area, the case is manufactured only by adjusting the nesting of the mold of the case so that the partition portion having the communication path can be formed. The components can be shared between the standard specifications and the specifications for high-temperature areas, and there is no need for any additional parts for the partition, and investment for new molds is required to manufacture these additional parts. The manufacturing cost of the entire case is eliminated. It is possible to achieve the reduction.

  Embodiments of the present invention will be described below with reference to the drawings.

  As a case used for the vehicle air conditioning unit 1 (details will be described later) according to the present invention, the configuration of the case 2 is shown in FIGS. 1 and 2.

  The case 2 corresponds to the air conditioning unit main body 29 of the vertically-installed fully integrated vehicle air conditioning unit 1, and includes an air inlet 3 for connecting to the windward side of the intake unit portion 28, and a blower 34. The fan-shaped fan storage space 4 in which the fan 35 is stored and the air flow path 5 extending from the nose portion 4a that opens below the fan storage space 4 are configured. 5 is a cooling heat exchanger installation space 6 in which at least the cooling heat exchanger 37 is accommodated, a heating heat exchanger installation space 7 in which the heating heat exchanger 39 is accommodated, and the leeward side of the air The blowout flow path 8 is configured.

  The blow-out flow path 8 is a front vent blow-out flow path 9 for sending air to the face of the front seat occupant, and a differential blow-off position located above the front vent blow-out flow path 9 in the vehicle vertical direction. A flow path 10, a front foot blowing flow path 11 for sending air to the feet of the front seat occupant, and a branch from the front foot blowing flow path 11 and extending downward in the vehicle vertical direction, It has the flow path 12 for rear side blowing for sending air to the side. A front vent blowing opening 13 is located on the most ventilated side of the front vent blowing flow path 9, a differential blowing opening 14 is located on the most ventilating side of the differential blowing flow path 10, and the front foot blowing flow path 11 is located on the most ventilated side. A front foot blowing opening 15 is provided on the most windward side, and a rear side blowing opening 16 is provided on the most windward side of the rear blowing channel 12.

  Further, the case 2 has a partition portion 18 that partitions the heating heat exchanger installation space portion 7 and the rear side blowing passage 12. The partition portion 18 is substantially the same as the opening of the rear side blowing passage 16. A through-hole-shaped communication passage 19 is opened at a position facing each other. As shown in FIG. 1, the communication path 19 can be opened and closed by an opening / closing door 20 that slides along the side surface of the heating heat exchanger installation space 7 of the partition portion 18, for example. In addition, since the mechanism for sliding the opening / closing door 20 is a well-known thing, it abbreviate | omitted here.

  Further, the case 2 has a rear-side blowing opening 16 that passes through a portion that forms the outer side surface of the rear-side blowing passage 12 from an upper portion in the vehicle vertical direction from an opening of a front foot blowing opening 15 that will be described later. Up to the range where the peripheral portion is formed, the rear blowing channel forming member 22 is provided as a separate member from the case 2.

  As shown in FIGS. 1, 2, and 6 to 8, the rear-side blowing channel forming material 22 includes a portion branched from the front foot blowing channel 11 in the rear-side blowing channel 12. A rear-side blowing channel forming material 22a having a blocking portion 23 that can block the upstream portion, and a rear-side blowing flow that does not have this blocking portion 23 as shown in FIGS. There are two types, a path forming material 22b, and the rear blowing channel forming material 22a and the rear blowing channel forming material 22b are interchangeable.

  As shown in FIGS. 1 and 2, the case 2 includes an engaging portion 24 that can be engaged with the front end of the closing portion 23 of the rear-side blowing channel forming member 22a, and a rear side. It has an engaging portion 25 that can be engaged with the lower end of the blowing channel forming material 22a or the rear-side blowing channel forming material 22b.

  The vehicle air conditioning unit 1 using the case 2 having such a structure has a mode shown in FIGS. 3 to 5 and a mode shown in FIGS. 6 to 8. The vehicle air-conditioning unit 1 is, for example, a vertically-installed fully integrated type, and basically includes an intake unit 28 and an air-conditioning unit main body 29. Of course, the blower 34 to be described later may be a semi-integrated type housed in another unit instead of the air conditioning unit main body 29.

  The intake unit portion 28 is common to the modes shown in FIGS. 3 to 5 and the modes shown in FIGS. 6 to 8. In this embodiment, the outside air inlet 30 and the inside air inlet 31 are the case 32. However, an inside / outside air switching door (not shown) for appropriately selecting the outside air introduction port 30 and the inside air introduction port 31 is housed in the case 32. Only the outside air inlet may be open to the case 32, and the intake unit 28 may be integrated with or separated from the air conditioning unit main body 29.

  The air-conditioning unit main body 29 is also common to the modes shown in FIGS. 3 to 5 and the modes shown in FIGS. 6 to 8 for the most part. The fan 35 of the blower 34 is stored in the fan storage space 4 in the case 2. Thereby, by rotating the fan 35 of the blower 34, the air taken into the intake unit portion 28 from the outside air inlet 30 or the inside air inlet 31 passes through the air inlet 3 and the air flow path 5 of the air conditioning unit main body 29. Sent to.

  A cooling heat exchanger 37 such as an evaporator is accommodated in the cooling heat exchanger installation space 6 so as to close the cooling heat exchanger installation space 6. In this embodiment, the cooling heat exchanger installation space 6 A filter 38 is housed on the windward side of the heat exchanger 37 so as to close the cooling heat exchanger installation space 6.

  The above-described heating heat exchanger installation space 7 is defined on the lower side in the vehicle vertical direction of the air flow path 5 that is on the windward side of the cooling heat exchanger installation space 6. As shown in FIGS. 3 to 5, a heating heat exchanger 39 such as a heater core can be installed in the heating heat exchanger installation space 7, and in this embodiment, the heating heat exchange is performed. As shown in FIG. 3 to FIG. 5, the ratio of the air passing through the heating heat exchanger 39 and the heating heat exchanger 39 are The air mix door 40 which adjusts the ratio of the air to bypass can be installed.

  When the heating heat exchanger 39 and the air mix door 40 are installed, the upper area in the vehicle vertical direction of the heating heat exchanger 39 in the air flow path 5 becomes the cold air flow path 41 and the heating heat exchanger. Of the installation space 7, the leeward side of the heating heat exchanger 39 is a hot air flow path 42, and the air that has become cold air bypassing the heating heat exchanger 39 passes through the cold air flow path 41 and is blown out. The air that has flowed up to the flow path 8 and passed through the heating heat exchanger 39 to become hot air passes through the hot air flow path 42 and flows to the blowing flow path 8.

  That is, when the heat exchanger 39 for heating and the air mix door 40 are installed, the air conditioning unit 1 for the vehicle becomes an air-conditioner specification having both air-conditioning functions for warm regions, and the heat exchanger 39 for heating. And when not installing the air mix door 40, this vehicle air conditioning unit 1 becomes a cooling unit specification provided only with the cooling function for high-temperature areas, such as the Middle East.

  The blowing flow path 8 is provided with a blowing mode switching door 43 for switching at least air flowing through the front foot blowing flow path 11 and air flowing through the front vent blowing flow path 9. The blow mode switching door 43 is of a rotary type in this embodiment, and the arc-shaped portion of the substantially fan-shaped configuration is closed and the linear portion is opened.

  Further, as shown in FIGS. 3 to 5, when the blowout flow path 8 has a differential blowout flow path 10 and a differential blowout opening 14 on the most leeward side thereof, a front vent blowout opening is formed. A blow mode switching door 44 for switching the air blown out of the case 2 from the case 13 and the air sent to the differential blow flow passage 10 faces the differential blow opening 14 and the wind of the differential blow flow passage 10 Arranged at the upper position. When the differential mode is not required in the blowing mode, a configuration is adopted in which the differential blowing opening 14 is closed and the blowing mode switching door 44 is removed by the closing member 45 shown in FIGS.

  Based on the above configuration, the heating heat exchanger 39 is installed in the heating heat exchanger installation space 7, the air mix door 40 and the blow mode switching door 44 are arranged, and the rear side blowout without the blocking portion 23 is provided. 3 to FIG. 3 for each of the vent mode, the B / L mode, and the foot mode when the air flow path forming material 22b is mounted and the communication passage 19 is closed by the opening / closing door 20 to be an air conditioner specification. 5 will be described.

  FIG. 3 shows the VENT mode. That is, the opening degree of the air mix door 40 to the heating heat exchanger side is 0% (the opening degree to the cold air flow path 41 side is 100%), and the blowing mode switching door 43 is connected to the front foot blowing flow path 11. The windward side is fully closed, and the flow of air to the differential blowout flow path 12 is blocked accordingly. The blowout mode switching door 44 is fully closed on the windward side of the differential blowout flow path 10 and the front vent blowout. Since the opening for opening is fully opened, the air that has entered the air flow path 5 from the air inlet 3 by the blower 34 is cooled by the heat exchanger 37 for cooling, and then bypasses the heat exchanger 39 for heating, It flows to the cold air flow passage 41 side, reaches the front vent blow opening 13 from the front foot blow flow passage 9 and blows into the vehicle interior.

  FIG. 4 shows the B / L mode. That is, the opening degree of the air mix door 40 toward the heat exchanger 39 for heating is greater than 0% and less than 100%, and the blowing mode switching door 43 includes the front foot blowing channel 11 side and the front vent blowing channel. Since the blow mode switching door 44 is fully closed on the windward side of the differential blowing flow path 10, the air that has entered the air flow path 5 from the air inlet 3 by the blower 34 is opened. After being cooled by the cooling heat exchanger 37, a part thereof passes through the heating heat exchanger 39 and is heated, and the other part bypasses the heating heat exchanger 39. Then, the air that has passed through the heating heat exchanger 39 becomes warm air, passes through the warm air flow path 42, reaches the front foot blowing opening 11 from the front foot blowing flow path 11, and is blown into the vehicle interior. The air that has been blown into the vehicle interior from the rear-side blowing passage 12 to the rear-side blowing opening 16 and that has bypassed the heat exchanger 39 for heating is left in the front vent from the front vent blowing-out passage 9 with cold air. It reaches the blowing opening 13 and is blown into the vehicle interior.

  In FIG. 5, the FOOT mode is shown. That is, the opening degree of the air mix door 40 toward the heating heat exchanger 39 is 100% (the opening degree toward the cold air flow path 41 is 0%). Since the upstream side is fully closed and the upstream side of the front foot blowing channel 11 is fully opened, the air that has entered the air channel 5 from the air inlet 3 by the blower 34 is cooled by the cooling heat exchanger 37. After that, all of the air passes through the heating heat exchanger 39 and is heated, and the air that has passed through the heating heat exchanger 39 becomes hot air, passes through the hot air flow path 42, and passes through the front foot blowing flow path. 11 to the front foot blowing opening 15 and blown into the vehicle interior, and from the rear side blowing passage 12 to the rear side blowing opening 16 and blown into the vehicle interior.

  That is, the rear side blowing passage 12 and the rear side blowing opening 16 function as a rear foot blowing passage and a rear foot blowing opening in the B / L mode and the FOOT mode.

  Based on the above configuration, the heating heat exchanger 39, the air mix door 40, and the blowing mode switching door 44 are not housed and arranged in the heating heat exchanger installation space 7, and the rear blowing has the closed portion 23. VENT in the case where the flow path forming member 22a is mounted, the differential blowing opening 14 is closed by the closing member 45 to eliminate the differential blowing flow path 10, and the communication path 19 is opened to make the cooling unit specification. Each blowing mode of the mode, B / L mode, and foot mode will be described with reference to FIGS.

  FIG. 6 shows the VENT mode. That is, the blowing mode switching door 43 fully opens the windward side of the front vent blowing channel 9 and fully closes the windward side of the front foot blowing channel 11 and opens the communication path 19 to heat the heating. Since the exchanger installation space portion 7 and the rear side blowing flow path 12 are in communication with each other, the air that has entered the air flow path 5 from the air inlet 3 by the blower 34 is cooled by the cooling heat exchanger 37. After that, the front vent blowing passage 9 leads to the front vent blowing opening 13 and is blown into the vehicle interior, and from the heating heat exchanger installation space portion 7 through the communication passage 19 to the rear side blowing passage. 12 enters the rear side blowing passage 12 and reaches the rear side blowing opening 16 to be blown into the vehicle interior.

  FIG. 7 shows the B / L mode. That is, the blowing mode switching door 43 is opened to both the windward side of the front vent blowing channel 9 and the windward side of the front foot blowing channel 11 and the communication path 19 is opened to heat the heating. Since the exchanger installation space portion 7 and the rear side blowing flow path 12 are in communication with each other, the air that has entered the air flow path 5 from the air inlet 3 by the blower 34 is cooled by the cooling heat exchanger 37. After that, the front foot blowing channel 11 reaches the front foot blowing opening 15 and blows into the vehicle interior, and the front vent blowing channel 9 reaches the front vent blowing opening 13 and blows into the vehicle cabin. Then, it enters the rear side blowing passage 12 from the heating heat exchanger installation space portion 7 through the communication passage 19 and reaches the rear side blowing opening 16 from the rear side blowing passage 12 and enters the vehicle interior. Blown out .

  In FIG. 8, the FOOT mode is shown. That is, the blowing mode switching door 43 fully opens the windward side of the front foot blowing flow path 11 and fully closes the windward side of the front vent blowing flow path 9 and opens the communication path 19 to heat the heating. Since the exchanger installation space portion 7 and the rear side blowing flow path 12 are in communication with each other, the air that has entered the air flow path 5 from the air inlet 3 by the blower 34 is cooled by the cooling heat exchanger 37. After that, the front foot blowing channel 11 reaches the front foot blowing opening 15 and is blown into the vehicle interior, and from the heating heat exchanger installation space 7 through the communication passage 19, the rear side blowing channel. 12 enters the rear side blowing passage 12 and reaches the rear side blowing opening 16 to be blown into the vehicle interior.

  That is, in the specifications for high-temperature areas, the rear-side blowing passage 12 and the rear-side blowing opening 16 are arranged in the rear vent blowing passage and the rear vent blowing in any of the VENT mode, the B / L mode, and the FOOT mode. Functions as an opening.

  As described above, the vehicle air-conditioning unit 1 has the rear-side flow path 12 when the air-conditioner specification in which the heating heat exchanger 39 and the like are stored in the heating heat exchanger installation space 7 is set as a standard specification. When the rear side blowing opening 16 functions as a rear foot blowing channel and a rear foot blowing opening, most of the case 2 is shared by the rear side blowing channel forming material 22b. It is possible to achieve specifications for high-temperature areas only by exchanging with the side blowing channel forming material 22a, removing the heating heat exchanger 39, etc., and moving the open / close door 20, and the rear side blowing channel 12, The rear side blowing opening 16 can function as a rear vent blowing channel and a rear vent blowing opening.

  On the other hand, as for the case 2, instead of opening and closing the communication passage 19 with the opening / closing door 20, although not shown, a mold for forming the case 2 is formed as a nested structure, and this replacement, addition, partial removal, etc. As a result of the adjustment, the partition portion 18 may have the communication path 19, or the partition portion 18 may not have the communication path 19.

  That is, when the vehicular air conditioning unit 1 is a standard specification having both air-conditioning and heating functions, the nesting of the mold for molding the case 2 can be nested with the partition portion 18 having no communication path 19. In the case of using the case 2 formed from a mold provided with this nesting and having only the cooling function for high-temperature areas, the mold nesting for molding the case 2 is A case 2 is used which is adjusted so that the partition portion 18 having the communication passage 19 can be formed, and is formed from a mold having the insert.

  In this case, when the case 2 having the configuration in which the partition portion 18 does not have the communication path 19 is adopted in order to make the vehicle air conditioning unit 1 have a standard specification having both air conditioning and heating functions, the opening doors of the previous embodiment and the door 3, there is only a difference between whether the communication path 19 is closed or there is no communication path 19 itself. Therefore, when the blowing mode is the VENT mode, the same air flow as when the communication path 19 in FIG. When the blowing mode is the B / L mode, the same air flow as when the communication path 19 in FIG. 4 is closed by the opening / closing door 20 is generated. When the blowing mode is the FOOT mode, the communication path 19 in FIG. An air flow similar to a closed one can be produced. On the other hand, when the case 2 having the configuration in which the partition portion 18 has the communication path 19 is adopted in order to make the vehicle air-conditioning unit 1 have only the cooling function for high-temperature areas, the opening / closing door of the previous embodiment is used. Since there is only a difference whether the door 20 is idle or the opening / closing door 20 itself is not present, when the blowing mode is the VENT mode, an air flow similar to that when the opening / closing door 20 opens the communication passage 19 of FIG. When the blowing mode is the B / L mode, an air flow similar to that when the opening / closing door 20 opens the communication path 19 of FIG. 7 is generated. When the blowing mode is the FOOT mode, the opening / closing door 20 opens the communication path 19 of FIG. The same air flow can be generated.

  The configuration and usage of the rear blowing flow path forming members 22a and 22b are the same as those in the previous embodiment, and the description thereof is omitted. Further, since the presence or absence of mounting of the heat exchanger 39 for heating is the same as in the previous embodiment, the description thereof is omitted.

FIG. 1 is a schematic view showing the structure of a case of a vehicle air conditioning unit according to the present invention. FIG. 2 is a schematic diagram showing the configuration of the heating heat exchanger installation space and the rear-side outlet flow passage portion of the case of the above vehicle air conditioning unit. FIG. 3 is a schematic diagram showing an aspect in which the vehicle air conditioning unit is the air conditioner specification, which is a standard specification in a warm region, and the blowing mode is the VENT mode. FIG. 4 is a schematic diagram showing an aspect when the vehicle air conditioning unit is the air conditioner specification which is a standard specification in a warm region and the blowing mode is set to the B / L mode. FIG. 5 is a schematic view showing an aspect in which the vehicle air conditioning unit is the air conditioning specification that is a standard specification in a warm region and the blowing mode is the FOOT mode. FIG. 6 is a schematic diagram showing an aspect when the vehicle air-conditioning unit is the cooling unit specification that is a high-temperature area specification and the blowing mode is the VENT mode. FIG. 7 is a schematic view showing an aspect when the vehicle air-conditioning unit is the cooling unit specification that is a high-temperature area specification and the blowing mode is the B / L mode. FIG. 8 is a schematic view showing an aspect when the vehicle air conditioning unit is the cooling unit specification which is a high temperature specification and the blowing mode is the FOOT mode.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vehicle air-conditioning unit 2 Case 3 Air inlet 5 Air flow path 6 Cooling heat exchanger installation space part 7 Heating heat exchanger installation space part 8 Blowing flow path 9 Front vent blowing flow path 11 Front foot blowing flow Road 12 Rear side blowing passage 13 Front vent blowing opening 15 Front foot blowing opening 16 Rear side blowing opening 18 Partition portion 19 Communication path 20 Open / close door 22a or 22b Rear side blowing flow path forming material 23 Closure part 34 Blower 37 Heat exchanger 39 for cooling 39 Heat exchanger 43 for heating 43 Blowing mode switching door 45 Closure member

Claims (5)

In the case, an air flow path through which air taken in from an air inlet by a blower flows, a heat exchanger for cooling installed on the air flow path, and the cooling among the air flow paths when having a heating function When the heating heat exchanger installed in the installation space on the wind downstream side of the heat exchanger for heating and the cooling heat exchanger or the heating heat exchanger in the air flow path are installed A blowout flow path that constitutes a part of the leeward side part of the heat exchanger for heating,
The flow path for blowing is formed on the outer surface of the case on the front vent blowing opening for sending air to the front seat side, on the front foot blowing opening for sending air to the front seat side, and on the rear seat side. A rear vent opening for sending air is formed, the front vent flow path having the front vent blow opening as the most leeward side, and the front foot having the front foot blow opening as the leeward side. And having a configuration including a blowout flow path for the rear side and a flow path for the rear side blowout with the rear side blowout opening being the most downstream side,
The rear side blowing channel is branched from the front foot channel, and is adjacent to the installation space of the heating heat exchanger via a partition, and the partition has a communication path. Allows direct communication,
When the heat exchanger for heating is installed, the partition portion does not have the communication path, and the windward side portion of the rear side blowing channel is opened, and the heat exchanger for heating is not installed. In such a case, the vehicle air conditioning unit is characterized in that the partition portion has the communication path and the windward side portion of the rear-side flow path is closed. The partition portion is provided with an opening / closing door that can freely open and close the communication path, so that the opening / closing door blocks the communication path and does not have the communication path, and the opening / closing door opens the communication path. The vehicle air conditioning unit according to claim 1, wherein the vehicle air conditioning unit can be in a state having the communication path. The mold for forming the case has a nesting structure, and by adjusting the nesting, a partition part having a communication path is formed or a partition part having no communication path is formed. The vehicle air conditioning unit according to 1. The windward side portion of the rear-side blowing channel uses a rear-side blowing channel forming material that forms the rear-side blowing channel in the case as a separate member from the case, and this rear-side blowing formation By forming a closed portion that can reach the partition portion crossing the air flow path of the rear-side blowing channel on the inner surface of the material, and attaching a rear-side blowing forming material having the closed portion The vehicle air conditioning unit according to any one of claims 1 to 3, wherein the vehicle air-conditioning unit can be closed. The air flow path has a differential blowing passage on the outer surface of the case, the differential blowing opening for sending air to the window side of the vehicle, with the differential blowing opening being the most leeward side. The opening for differential blowing or the flow path for differential blowing is configured to be open when the heating heat exchanger is installed, and separate from the case when the heating heat exchanger is not installed. The vehicle air conditioning unit according to any one of claims 1, 2, 3, and 4, wherein the vehicle is closed by a closing member.

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