JP2005153824A - Baffle plate for air conditioning and thermostat unit part for air conditioning unit using this - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To integrally form no member for reinforcement on an air conditioning case when the air conditioning case is reinforced to prevent falling down of a wall part for partitioning a warm air passage of the air conditioning case and to suppress raising of manufacturing cost of an air conditioning unit. <P>SOLUTION: The baffle plate for air conditioning is opposed to a bent blowing out opening 10 of the bent blowing out opening 10 and a defrost blowing out opening 11 arranged at a merging position 9 of a cool air passage 8 and the warm air passage 7 in a unit case 6 and having one end connected to the warm air passage 7 and the other end arranged in parallel and is opened to the upstream side. One end has an engagement part 28 for connecting both wall parts 17a, 17b for partitioning the warm air passage 7 and the other end has a clamping part 35 for clamping a border part of the bent blowing out opening 10 and the defrost blowing out opening 11. <P>COPYRIGHT: (C)2005,JPO&NCIPI

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 baffle plate for air conditioning according to the present invention is arranged at a confluence portion of the cool air passage and the hot air passage in the unit case, and one end portion is connected to the hot air passage and the other end portion is arranged in parallel. The vent blowing opening and the differential blowing opening are opposed to the vent blowing opening and open upstream thereof, and the one end has two walls defining the hot air passage. It has the connection means for connecting with both of the parts (Claim 1). As this connection means, there is provided a configuration in which side plates are provided on both sides of each passage of the baffle plate in the parallel direction, and an engaging portion that can be engaged with the opening side end portion of the wall portion defining the warm air passage is provided on the side plate. Can be mentioned.

  Furthermore, the air-conditioning baffle plate according to the present invention has the other end opened to the upstream side of the differential blowing opening, and the boundary between the vent blowing opening and the differential blowing opening. It is also characterized by having clamping means for clamping the part (claim 2). As this clamping means, the end of one end of the baffle plate branches into a bifurcated shape, and the pair of branch parts are made elastic so that they can be separated from each other, thereby providing a vent blowing opening and The structure which can pinch and fix the boundary part with the opening part for differential blowing is mentioned.

  Furthermore, the baffle plate for air conditioning according to the present invention may be formed with a reinforcing rib extending in the direction along the air flow at the one end, and the reinforcing rib has the clamping means. Item 3). The reinforcing ribs are provided with side plates on both sides in the parallel direction of the passages of the baffle plate, and are laid between the side plates.

  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 unit comprising a cool air passage through which air that bypasses the heat exchanger flows, a hot air passage through which air that has passed through the heating heat exchanger flows, a vent blowing opening, a differential blowing opening, and a foot blowing opening A vent blowout opening and a differential blowout opening formed on the case, one end of which is connected to the hot air passage and the other end is juxtaposed to the confluence of the cold air passage and the hot air passage An air-conditioning baffle plate that opens to the upstream side of the vent blowing opening is disposed, and the air-conditioning baffle plate defines the warm air passage at the one end. For the two walls Connecting means for connecting to the other side, and having a holding means for holding the boundary part between the vent blowing opening and the differential blowing opening at the other end ( Claim 4).

  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 is arrange | positioned in the said unit case so that it may become back (Claim 5).

  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.

  In particular, according to the second aspect of the present invention, the air-conditioning baffle plate sandwiches the boundary portion between the vent blowing opening and the differential blowing opening by the clamping means that the other end portion has, thereby The baffle plate serves as a support column for the boundary portion, and the unit case can be prevented from being distorted by the weight of the duct connected to the vent blowing opening and the differential blowing opening. In particular, according to the invention described in claim 3, even if a reinforcing rib is provided to increase the strength of the baffle plate for air conditioning, an increase in ventilation resistance can be suppressed.

  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. The temperature control unit 1 is connected to a blower 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 the center console portion of the 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 is 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 outer 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.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Temperature control unit part 3 Heat exchanger for cooling 4 Heat exchanger for heating 6 Unit case 6a Boundary part 7 Hot air passage 8 Cold air passage 9 Confluence | merging part of a hot air passage and a cold air passage 10 Vent blowout opening part 11 Differential blowout Opening 12 foot opening 17a wall 17b wall 19 duct 20 baffle plate 29 engaging part (connecting means)
30 Reinforcement rib 31 Reinforcement rib 35 Clamping part (clamping means)

Claims (5)

Vent blowing opening and differential blowing opening arranged at the confluence of the cool air passage and hot air passage in the unit case, one end connected to the warm air passage and the other end in parallel Connecting means for connecting to both of the two wall portions defining the warm air passage and opening to the upstream side of the vent blowing opening portion of the portion A baffle plate for air conditioning characterized by comprising: The other end portion opened to the upstream side of the differential blowing opening has clamping means for clamping a boundary portion between the vent blowing opening and the differential blowing opening. The baffle plate for air conditioning according to claim 1, wherein The air-conditioning baffle plate according to claim 2, wherein a reinforcing rib extending in a direction along the air flow is formed at the one end, and the reinforcing rib has the clamping means. A cooling heat exchanger and a heating heat exchanger located downstream in the ventilation direction of the cooling heat exchanger are provided in at least the unit case,
A cold air passage through which the air bypassing the heating heat exchanger flows, a hot air passage through which the air that has passed through the heating heat exchanger flows, a vent blowing opening, a differential blowing opening, and a foot blowing opening Are formed in the unit case,
The vent of the vent blowing opening and the differential blowing opening having one end connected to the hot air passage and the other end juxtaposed to the confluence portion of the cold air passage and the hot air passage An air conditioning baffle plate that opens to the upstream side of the blowout opening is arranged,
The air-conditioning baffle plate has connection means for connecting to both of the two wall portions for defining the hot air passage at the one end portion, and the vent portion at the other end portion. A temperature control unit part of an air conditioning unit, characterized by having clamping means for clamping a boundary portion between the blowing opening and the differential blowing opening. 5. The cooling heat exchanger and the heating heat exchanger are arranged so that the cooling heat exchanger is located behind the heating heat exchanger in the vehicle traveling direction. Temperature control unit part of the air conditioning unit described in 2.

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