JP4431955B2 - Air conditioning baffle plate and air conditioning unit temperature control unit using the same - Google Patents

Description

  The present invention relates to an air conditioning baffle plate disposed at a confluence portion of two air passages, and a temperature control unit portion of an air conditioning unit using the air conditioning baffle plate.

  By changing the opening of the air mix door for the air cooled by the cooling heat exchanger, the air passing through the hot air passage after being heated by the heating heat exchanger and the heating heat exchanger An air conditioning unit that adjusts the ratio of air that bypasses and passes through the cold air passage and adjusts the ratio of the air that has passed through the cold air passage and the air that has passed through the hot air passage in the air mix chamber is known ( For example, see Patent Document 1 and Patent Document 2.)

  Then, in order to prevent the narrowing of the warm air passage, the wall portion provided in the air conditioning case for defining the warm air passage falls into the other wall portion side due to molding distortion or the like. Also known is a resin molded case structure for an air conditioner in which a connecting member integrally formed with the wall portion is provided in a bridging manner between the first wall portion constituting the side surface and the second wall portion constituting the other side surface. (For example, refer to Patent Document 1).

On the other hand, the air mix chamber of the air conditioner is provided with an air mix latticed duct in which warm air branch ducts and cool air branch ducts are alternately arranged to inject warm air into the cold air. In addition, an air mix device for an automobile air conditioner is known in which cold air is injected into warm air and the air mix effect is remarkably improved (see, for example, Patent Document 2).
Japanese Patent Laid-Open No. 2002-12017 Japanese Utility Model Publication No. 55-178413

  However, the resin molded case structure described in Patent Document 1 integrally forms the connecting member in a bridging manner between the first wall portion and the second wall portion. Therefore, when forming the connecting member, the first wall portion and the second wall portion are formed. Since it is necessary to perform a molding operation such as die cutting in a direction crossing the die cutting direction for forming the two wall portions, there is a problem that the number of molds and man-hours increase, and the manufacturing cost of the air conditioning unit increases.

  And the air mix lattice duct described in Patent Document 2 is not arranged in contact with the opening of the warm air passage (warm air duct) as shown in FIG. Obviously, it does not function in any way to prevent tilting of the wall that defines the hot air passage.

  In view of this, the present invention provides a reinforcing member that is not formed integrally with the air-conditioning case in order to reinforce the air-conditioning case in order to prevent the wall portion that defines the hot air passage of the air-conditioning case from being tilted. The object is to provide a case reinforcing means to the air-conditioning baffle plate.

The air-conditioning baffle plate according to the present invention includes a cooling heat exchanger and a heating heat exchanger located on the downstream side in the ventilation direction of the cooling heat exchanger in at least a unit case, and the heating heat exchanger A cold air passage through which air that bypasses the air flows, a hot air passage through which air that has passed through the heat exchanger for heating flows, a portion where the hot air passage and the cold air passage merge , and an opening on the downstream side of the joining portion The vent blow opening, the differential blow opening, and the foot blow opening are formed in the unit case, and the hot air passage is connected to the hot air passage and the cool air from the head of the heat exchanger for heating. A wall portion extending to the side of the merging portion with the passage, and a wall portion that also serves as an air guide that guides air from the merging portion of the cold air and the hot air to the foot blowing opening, and is defined. The confluence of these walls The open end side is temperature control unit of the air conditioning unit in which the warm air from the cold air and the warm air passage from the cold air passage facing the rear side of the vehicle traveling direction so as to be well mixed in the confluent portion In the baffle plate for air conditioning arranged in a portion where the hot air passage and the cold air passage meet, the passage portion has a passage portion, and the passage portion has a substantially U-shaped cross section, Hot air heated by the heat exchanger for heating can be sent from the hot air passage to the vicinity of the vent blow opening, one of the blow-off portions is open to the cold air passage and the other is the differential blow Cold air that is opened to the opening for the opening and the foot blowing opening and bypasses the heat exchanger for heating, and the opening for the differential blowing and the foot blowing from the cold air passage through the blow-off portion of the baffle plate Of the opening Can be sent to the neighbor, and further, the A passage and the blow unit, wherein the passage portion is with is constructed by arranging alternately so that both sides, located on the opposite sides of the passage channel A side plate extending from the warm air passage toward the merging portion side so as to have a warm air passage side end and a vent outlet passage side end, and the side plate is a passage portion located on both sides. Is formed integrally with the outer side surface of the passage portion located on both sides of the wall portion, and the end portion on one side of the side plate is on the opening side of the wall portion where the warm air passage is formed. together is connected to the end portion, the passage portion is open at its upstream side so as to face the vent opening of said defroster opening and the vent opening in a state of being parallel The vent outlet opening and the de As a connecting means between the end portion on the side of the hot air passage of the side plate and the opening side end on the side of the joining portion of the wall portion forming the hot air passage, the temperature of the side plate is connected. Two engaging portions are provided at the air passage side end, and the engaging portion is an opening-side end portion on the confluence site side of the wall portion by a pair of extending portions extending substantially along the ventilation direction of the warm air passage. And has two corners at the vent blow opening side end of the side plate, and one corner faces the inner surface on the rear side of the vent blow opening in the vehicle traveling direction. The other corner portion extends toward the boundary portion, and at least the other corner portion of the corner portion is provided with a reinforcing rib from one wall portion constituting the outer wall portion to the other wall portion. The reinforcing rib serves as a means for clamping the boundary portion with the boundary portion at the tip. It is characterized by having a clamping portion for lifting (claim 1).

The temperature control unit portion of the air conditioning unit according to the present invention includes at least a cooling heat exchanger and a heating heat exchanger located downstream in the ventilation direction of the cooling heat exchanger in the unit case, and the heating unit A cold air passage through which air that bypasses the heat exchanger flows, a hot air passage through which air that has passed through the heat exchanger for heating flows, a portion where the hot air passage and the cold air passage merge, and a downstream of the joining portion A vent blowing opening, a differential blowing opening, and a foot blowing opening formed on the side are formed in the unit case, and the hot air passage is formed from the head of the heat exchanger for heating. A wall portion extending to a side where the cold air passage and the cold air passage meet, and a wall portion serving also as an air guide for guiding air from the cold air and hot air to the foot blowing opening. Made of these walls The open end of the flow part side of the air conditioning unit in which the warm air from the cold air and the warm air passage from the cold air passage facing the rear side of the vehicle traveling direction so as to be well mixed in the confluent portion temperature In the adjustment unit portion, a baffle plate is disposed at a confluence portion of the hot air passage and the cold air passage, and the baffle plate has a passage portion and a blow-off portion, and the passage portion has a substantially cross section. The U-shaped, hot air heated by the heating heat exchanger can be sent from the hot air passage to the vicinity of the vent blow opening, and one of the blow-off portions is on the cold air passage side The other side is opened to the differential blowout opening and the foot blowout opening, and the cold air bypassing the heating heat exchanger is passed through the blowoff portion of the baffle plate from the cold air passage. Open for blowout Parts and can be sent to the vicinity of the foot opening, further wherein the passage section and the blow unit, together with the passage portion is configured by arranging alternately so that both sides, the passage section A side plate extending from the warm air passage toward the merging site side so as to have a warm air passage side end and a vent outlet passage side end on the outer side of the passage portion located on both sides of the side plate. Is formed integrally with the passage portions located on both sides so that it also serves as the outer side surface of the passage portions located on both sides, and the wall on one end of the side plate forms the hot air passage. Connected to the opening side end portion of the merging portion side of the portion, and the vent blowing opening portion among the vent blowing opening portion and the differential blowing opening portion in which the passage portions are arranged in parallel. So that it opens to the upstream side Connected to a boundary portion between the vent blowing opening and the differential blowing opening, and a hot air passage side end portion of the side plate and an opening side end of the wall portion forming the hot air passage on the confluence portion side. As a connection means, the side plate has two engaging portions at the end of the warm air passage, and the engaging portion is formed by a pair of extending portions extending substantially along the ventilation direction of the warm air passage. The opening side end on the merging site side is sandwiched, and the side plate has two corners at the vent blowing opening side end, and one corner is in the vehicle traveling direction of the vent blowing opening. And the other corner extends toward the boundary portion, and at least one of the corners forms an outer wall from the other wall to the other. Reinforcing ribs are installed over the wall, and the reinforcing ribs are sandwiching means with the boundary portion. It is characterized by having a clamping portion for clamping the boundary portion at its distal end Te (claim 2).

And the temperature control unit part of the air-conditioning unit according to the present invention includes the cooling heat exchanger and the heating heat exchanger, wherein the cooling heat exchanger is in the vehicle traveling direction with respect to the heating heat exchanger. It is good also as what arrange | positions so that it may become back ( Claim 3 ).

  Therefore, according to the present invention, the connecting means provided at one end of the air-conditioning baffle plate is connected to both wall portions defining the side surface of the hot air passage and is fixed between the wall portions. The passage area of the warm air passage does not become smaller or larger due to distortion or inclination of the wall. For this reason, it can prevent that the performance of an air-conditioning unit deteriorates because the ventilation | gas_flowing amount which passes a warm air path increases / decreases with respect to assumption amount. In addition, in order to prevent the wall portion that defines the hot air passage from tilting, the air conditioning baffle plate separate from the unit case has a function for reinforcing the unit case. Since it is possible to adopt the same molding process of the wall portion or the like as the conventional case for the case, the reinforcement does not cause a situation where the cost of the air conditioning unit increases.

Further, according to the present invention, the air-conditioning baffle plate has the boundary portion between the vent blowing opening and the differential blowing opening by the holding means of the other end of the air-conditioning baffle plate, so that the air-conditioning baffle plate has the boundary. It becomes a support | pillar of a site | part, and it can prevent that a unit case is distorted by the weight of the duct connected to the opening part for vent blowing, and the opening part for differential blowing. Furthermore , according to the present invention, an increase in ventilation resistance can be suppressed even if a reinforcing rib is provided to increase the strength of the baffle plate for air conditioning.

  In the present invention, even in an air conditioning unit in which an existing cooling heat exchanger is arranged in front of the heating heat exchanger in the vehicle traveling direction, the cooling heat exchanger developed by the present applicant is the heating unit. It is also possible to employ an air conditioning unit arranged behind the heat exchanger for the vehicle in the vehicle traveling direction.

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

  In FIG. 1, an example of an embodiment of the temperature control unit 1 is shown. This temperature control unit unit 1 is connected to a blower unit unit (not shown) having at least an inside / outside air introduction port, an inside / outside air switching door, and a blower, so that it is a semi-integrated type mounted on a center console unit of a vehicle. It constitutes a vertical air conditioning unit.

  The temperature control unit 1 is configured to heat a cooling heat exchanger 3 such as an evaporator that cools the air sent from the blower unit, and a heater core that reheats the air cooled by the cooling heat exchanger 3. Heat exchanger 4 and an air mix door that is arranged between cooling heat exchanger 3 and heating heat exchanger 4 and adjusts the ratio of air sent to heating heat exchanger 4 and bypassed air 5 in the unit case 6. Among them, the heat exchanger 4 for heating is arranged with the head tilted forward in the vehicle traveling direction in this embodiment because of a request for downsizing the temperature control unit 1 or the like.

  Further, the temperature control unit 1 passes through the unit case 6 through the air reheated by the heating heat exchanger on the front side in the vehicle traveling direction, which is the downstream side of the heating heat exchanger 4. And a cool air passage 8 on the downstream side of the cooling heat exchanger 3 and on the side of the heating heat exchanger 4 and the air mix door 5 that is substantially above the drawing. Among these, the warm air passage 7 guides air from the wall portion 17a extending from the head of the heating heat exchanger 4 and the joint portion 9 of the cold air and the warm air to the foot blowing opening 12 described later. The wall portion 17b also serves as an air guide and is defined at least. The opening end of the wall portions 17a and 17b on the side of the joining portion 9 is excellent in the cold air from the cold air passage 8 and the joining portion 9 It is directed to the rear side in the vehicle traveling direction so as to be mixed.

  A vent blowing opening 10, a differential blowing opening 11, and a foot blowing opening 12 are provided in the unit case on the downstream side of the portion 9 where the hot air passage and the cold air passage of the temperature control unit 1 merge. 6 is opened appropriately. The vent blowing opening 10 and the differential blowing opening 11 are separated by a boundary portion 6a therebetween. Although not shown, the side vent blowing openings may be opened in the unit case 6 on both sides of the vent blowing opening 10 along the vehicle width direction.

  These blowing openings 10, 11, and 12 communicate with air outlets that open into the vehicle interior via ducts 19 and 19 (note that the duct of the foot blowing opening 12 is not shown). Among these, in the vent blowing opening 10 and the differential blowing opening 11, the blowing mode switching doors 14 and 15 are rotatably arranged to open and close the openings 10 and 11. Furthermore, in this embodiment, the blowing mode switching door 16 is rotatably disposed on the flow path between the wall portion 17a and the outer wall of the unit case 6 so that the foot blowing opening 12 can be opened and closed. .

  The temperature control unit 1 is formed with an opening (not shown) for connecting to the blower unit at the rearmost position of the unit case 6 in the vehicle traveling direction, and accordingly, the cooling heat exchanger 3 is connected. Is arranged on the rear side in the vehicle traveling direction with respect to the heat exchanger 4 for heating. However, even if the vent blowing opening 10 and the differential blowing opening 11 are shifted to the front side in the vehicle traveling direction, the top of the cooling heat exchanger 3 is directly below the vent blowing opening 10 from the vehicle. It can be shifted behind the direction of travel. For this reason, since the curve of the flow of the air that has passed through the cooling heat exchanger 3 toward the vent blowing opening 10 can be moderated, the air resistance can be relatively reduced. Moreover, compared with the case where the heat exchanger 3 for cooling is arrange | positioned in the vehicle advancing direction front side according to the conventional arrangement | positioning method, the opening area of the opening part 11 for differential blowing can also be ensured sufficiently.

  Furthermore, in this invention, as FIG. 1 shows, the baffle plate 20 is provided in the confluence | merging site | part 9 where a cool air path and a warm air path merge. The baffle plate 20 is a separate member from the unit case 6 of the temperature control unit 1, and is mounted in a state where the unit case 6 is divided along the width direction of the vehicle as shown in FIG.

  In this embodiment, as shown in FIG. 2, the baffle plate 20 is configured by alternately arranging the passage portions 21 and the blowout portions 25 so that the passage portions 21 are on both sides. A side plate 27 that also serves as a side surface of the passage portion 21 is formed integrally with the passage portion 21 located on the outside.

  The passage portion 21 has a substantially U-shaped cross section, and the warm air heated by the heating heat exchanger 12 passes through the passage portion 21 of the baffle plate 20 from the warm air passage 7 and the vent blowing opening 10. The shape that can be sent to the vicinity of. Thereby, even if the head of the heating heat exchanger 12 is tilted forward in the vehicle traveling direction, a necessary amount of warm air is reliably supplied to the vent blowing opening 10. Therefore, it is possible to prevent the cool side vent phenomenon from occurring even when the temperature control unit 1 has the side vent blowing opening.

  On the other hand, one of the blow-off portions 25 is opened on the cold air passage 8 side, and the other is opened on the differential blowout opening portion 11 and the foot blowout opening portion 12 side. As a result, the cold air bypassing the heating heat exchanger 4 is sent from the cold air passage 8 to the vicinity of the differential blowout opening 11 and the foot blowout opening 12 through the blowout portion 25 of the baffle plate 20.

  In this embodiment, one of the blow-off portions 25 is open in the vicinity of the vent blow opening 10 and the other is connected to the warm air passage 7. A warm air suppression unit 26 is disposed in the portion 30. The warm air suppression unit 26 also serves as a reinforcement for the baffle plate 20.

  The warm air suppression part 26 is installed between the side walls so as to stand up from the same side as the bottom surface of the passage part 21. By having this hot air suppression part 26, the inlet part which becomes the upstream of the warm air of the blow-off part 25 becomes narrow (or disappears), and the hot air which has been able to enter the blow-through part 25 from the inlet part is cold air. The direction is greatly changed in the same direction as the cold air by being pushed by the flow or the like, and sent to the vicinity of the differential blowing opening 11 and the foot blowing opening 12. The height of the hot air suppression unit 26 is not uniform, and the arrangement of the inclination angle of the heat exchanger 4 for heating in the temperature control unit unit 1 and the duct 19 connected to the blowing openings 10, 11, 12 are routed. The dimensions are determined in consideration of the layout, the position of each outlet opening in the passenger compartment, the desired amount of blown air, and the like.

  Further, as shown in FIGS. 2 and 4, the baffle plate 20 is formed with two engaging portions 28 and 28 as connecting means to the wall portions 17 a and 17 b at the end of the side plate 27 on the side of the hot air passage. Has been. As shown in FIG. 4 in particular, the engaging portion 28 has a pair of extending portions 29 and 29 extending substantially along the ventilation direction of the warm air passage 7, and the wall portions 17 a and 17 b are interposed therebetween. It is possible to sandwich the opening side end on the merging site side. And when a pair of extension parts 29 and 29 hold | grip the opening side edge part of wall part 17a, 17b, respectively, wall part 17a, 17b of the warm air channel | path 7 is optimal for flowing warm air. It is possible to prevent the wall portions 17a and 17b from being tilted (or collapsed) by pressing or the like while being fixed by the width.

  Therefore, it can prevent that the performance of an air-conditioning unit deteriorates because the ventilation | gas_flowing amount which passes the warm air channel | path 7 increases / decreases with respect to assumption amount. In addition, unlike the conventional example, since the reinforcement of the unit case 6 itself can be omitted, the unit case 6 can be subjected to the same molding process of the wall portions 17a, 17b, etc. as the conventional case. The cost of the air conditioning unit does not increase due to the reinforcement.

2 and 4, the baffle plate 20 has one corner at the rear side in the vehicle traveling direction of the vent blowing opening 10 with respect to the vent blowing opening side end of the side plate 27. The other corner portion extends toward the boundary portion 6a. Reinforcing ribs 30 and 31 are provided between the corners of one side plate 27 and the other side plate 27 to reinforce the baffle plate 20 as shown in FIG. Further, the reinforcing ribs 30 and 31 are supported by a column portion 33 extending from the passage portion 21 at an intermediate position on the side along the longitudinal direction. As shown in FIG. 2, the reinforcing ribs 30 and 31 extend in a direction along the air flow, and can prevent an increase in ventilation resistance.

  The reinforcing rib 30 has a pinching portion 35 as a means for pinching a boundary portion between the vent blowing opening 10 and the differential blowing opening 11 at the tip portion. As shown in FIG. 4 in particular, the holding portion 35 has branch portions 35a and 35a formed by bifurcating the tip end portion of the reinforcing rib 30, and the pair of branch portions 35a and 35a are mutually connected. It is possible to firmly hold the tip of the boundary portion 6a by providing elasticity so that it can be separated.

  With such a configuration of the baffle plate 20, when the front end portion of the boundary portion 6 a is sandwiched and fixed, the baffle plate 20 has a peripheral portion of the vent blowing opening 10 and the differential blowing opening 11 in the unit case 6 ( In particular, even if the duct 19 is connected to the vent blowing opening 10 and the differential blowing opening 11 as shown in FIG. It is possible to prevent the case 6 from being distorted.

FIG. 1 is a cross-sectional view showing the overall configuration of the temperature control unit according to the present invention. Fig.2 (a) is a perspective view which shows the structure of a baffle plate same as the above, FIG.2 (b) is a perspective view which shows the structure of the state seen from the opposite side with respect to the baffle plate of Fig.2 (a). is there. FIG. 3 is an explanatory view showing a state in which the unit case of the temperature control unit portion is divided and the baffle plate is mounted. FIG. 4 is an enlarged view of the same baffle plate.

1 Temperature Control Unit 3 Cooling Heat Exchanger 4 Heating Heat Exchanger 6 Unit Case 6a Boundary Part 7 Hot Air Passage 8 Cold Air Passage 9 Confluence Part of Hot Air Passage and Cold Air Passage 10 Vent Blowing Opening 11 Def Blow Opening 12 foot opening 17a wall 17b wall 19 duct 20 baffle plate 29 engaging portion (connecting means)
30 Reinforcement rib 31 Reinforcement rib 35 Clamping part (clamping means)

Claims (3)

A cooling heat exchanger and a heating heat exchanger located on the downstream side in the ventilation direction of the cooling heat exchanger are provided at least in the unit case, and a cold air passage through which air bypassing the heating heat exchanger flows, A hot air passage through which air that has passed through the heat exchanger for heating flows, a portion where the hot air passage and the cold air passage merge, a vent blowing opening opened downstream from the joining portion, and a differential blowing An opening and an opening for foot blowing are formed in the unit case, and the hot air passage extends from the head of the heat exchanger for heating to the side where the hot air passage and the cold air passage meet. The wall portion and at least a wall portion that also serves as an air guide that guides air from a confluence portion of the cold air and the hot air to an opening portion for foot blowing are defined, and the openings on the confluence portion side of these wall portions At the end, the cold air from the cold air passage And the hot air from the hot air passage and the warm air passage and the cool air passage temperature control unit of the air conditioning unit facing the rear side of the vehicle traveling direction so as to be well mixed are joined at the merging site In the baffle plate for air conditioning arranged at the site,
The passage portion has a substantially U-shaped cross section, and the warm air heated by the heating heat exchanger is passed through the warm air passage from the vent blowing opening. The blowout part can be sent to the vicinity, one of which opens to the cold air passage side and the other opens to the differential blowout opening and the foot blowout opening, bypassing the heating heat exchanger. Cold air can be sent from the cold air passage to the vicinity of the differential blowout opening and the foot blowout opening through the blowout portion of the baffle plate, and the passage portion and the blowout portion include the passage The parts are arranged alternately so that both sides are on both sides,
A side plate extending from the warm air passage toward the merging site side has a warm air passage side end and a vent outlet passage side end on the outer side of the passage portion located on both sides of the passage portion. In addition, the side plate is formed integrally with the passage portions located on both sides, and serves as an outer side surface of the passage portion located on both sides.
The vent blowing opening in which one end of the side plate is connected to the opening side end on the side of the merging portion of the wall forming the warm air passage and the passages are in parallel. And the differential blowout opening, connected to a boundary portion between the vent blowout opening and the differential blowout opening so as to open upstream of the vent blowout opening.
As connecting means between the warm air passage side end portion and the joined part side of the opening side end of the wall portion forming the hot air passage of the side plate has two engaging portions to warm air passage side end of the side plate The engaging portion is configured to sandwich the opening side end portion of the wall portion on the joining site side by a pair of extending portions extending substantially along the ventilation direction of the warm air passage,
The side plate has two corners at the vent blowing opening side end, one corner extends toward the inner surface of the vent blowing opening on the rear side in the vehicle traveling direction, and the other corner is A reinforcing rib extends from one wall portion forming the outer wall portion to the other wall portion at least at the other corner portion of the corner portion, and extends toward the boundary portion. An air-conditioning baffle plate characterized by having a clamping part for clamping the boundary part at a tip part as clamping means for the boundary part. A cooling heat exchanger and a heating heat exchanger located on the downstream side in the ventilation direction of the cooling heat exchanger are provided at least in the unit case, and a cold air passage through which air bypassing the heating heat exchanger flows, A hot air passage through which air that has passed through the heat exchanger for heating flows, a portion where the hot air passage and the cold air passage merge, a vent blowing opening opened downstream from the joining portion, and a differential blowing An opening and an opening for foot blowing are formed in the unit case, and the hot air passage extends from the head of the heat exchanger for heating to the side where the hot air passage and the cold air passage meet. The wall portion and at least a wall portion that also serves as an air guide that guides air from a confluence portion of the cold air and the hot air to an opening portion for foot blowing are defined, and the openings on the confluence portion side of these wall portions At the end, the cold air from the cold air passage In temperature control unit of the air conditioning unit facing the rear side of the vehicle traveling direction so that the warm air from the warm air passage are well mixed in the confluent portion,
A baffle plate is arranged at the confluence of the hot air passage and the cold air passage ,
The baffle plate has a passage portion and a blow-through portion, and the passage portion has a substantially U-shaped cross section, and warm air heated by the heating heat exchanger is vented from the hot air passage. The blowout portion can be sent to the vicinity of the blowout opening, and one of the blowout portions opens on the cold air passage side, and the other opens on the differential blowout opening and the foot blowout opening side. Cold air that bypasses the exchanger can be sent from the cold air passage to the vicinity of the differential blowout opening and the foot blowout opening through the baffle plate blowout portion, and further, the passage portion and the blowout portion. Is configured by alternately arranging the passage portion on both sides,
A side plate extending from the warm air passage toward the merging site side has a warm air passage side end and a vent outlet passage side end on the outer side of the passage portion located on both sides of the passage portion. In addition, the side plate is formed integrally with the passage portions located on both sides, and serves as an outer side surface of the passage portion located on both sides.
The vent blowing opening in which one end of the side plate is connected to the opening side end on the side of the merging portion of the wall forming the warm air passage and the passages are in parallel. And the differential blowout opening, connected to a boundary portion between the vent blowout opening and the differential blowout opening so as to open upstream of the vent blowout opening.
As connecting means between the warm air passage side end portion and the joined part side of the opening side end of the wall portion forming the hot air passage of the side plate has two engaging portions to warm air passage side end of the side plate The engaging portion is configured to sandwich the opening side end portion of the wall portion on the joining site side by a pair of extending portions extending substantially along the ventilation direction of the warm air passage,
The side plate has two corners at the vent blowing opening side end, one corner extends toward the inner surface of the vent blowing opening on the rear side in the vehicle traveling direction, and the other corner is A reinforcing rib extends from one wall portion forming the outer wall portion to the other wall portion at least at the other corner portion of the corner portion, and extends toward the boundary portion. A temperature control unit part of an air conditioning unit, characterized in that it has a clamping part for clamping the boundary part as a clamping means with the boundary part.   3. The cooling heat exchanger and the heating heat exchanger are arranged such that the cooling heat exchanger is located behind the heating heat exchanger in a vehicle traveling direction. The temperature control unit part of the air conditioning unit described in 1.

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