JP2010030415A - Air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To achieve an easy die cutting during resin formation of a divided case body in an air conditioner case having an integrally formed scrolling case part, even if a first gap on an inlet side is narrow and a second gap on an opposite inlet side is wide in gaps between a blower and a sidewall part of a scrolling case. <P>SOLUTION: The air conditioner case 10 is constructed by combining a first case part on the inlet side with a second case part on the opposite inlet side obtained by dividing an external wall by a dividing surface vertical to a rotating shaft 11a of the centrifugal blower 11. The dividing surface is located midway along the sidewall part 36 of the scrolling case part 30. In this case, a range of the scrolling case part 30 where the first gap G1 is narrow and the second gap G2 is wide is formed as a separate component 51 with respect to first and second case parts 24 and 25. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an air conditioner including a centrifugal blower.

In order to reduce the noise generated when the air blown out from the blower collides with the scroll case, the first gap on the suction port side is narrowed and the first suction side on the anti-suction port side is reduced among the gaps between the blower and the nose portion of the scroll case. A centrifugal blower having a wide interval is disclosed in Patent Document 1.
JP 2002-339899 A

  However, when the centrifugal blower described in Patent Document 1 is applied to an air conditioner in which a scroll case portion of a blower is formed integrally with an air conditioning case that houses a heat exchanger, the following problems are associated with the formation of the air conditioning case. Was found to occur.

  That is, the air conditioning case is formed by resin-molding a divided case part that is divided into a plurality of parts, and then assembling these divided case parts together.

  However, when the air-conditioning case is divided into the first and second case parts at the position where the scroll case part is divided into the air inlet side and the counter-inlet side, the vicinity of the nose part of the scroll case part is the inlet side. Since the first interval is narrow and the second interval on the anti-suction port side is wide, the anti-suction port side of the nose portion becomes an undercut portion, and a problem arises if die cutting cannot be performed during resin molding.

  In view of the above points, the present invention provides a resin for a split case body even when the split surface of the air conditioning case is positioned at a position where the scroll case portion of the blower is divided into the air suction port side and the anti-suction port side. It is intended to enable easy die cutting during molding.

  In order to achieve the above object, according to the first aspect of the present invention, the scroll case portion (30) formed integrally with the air conditioning case (10) moves from the nose portion (31) positioned at the beginning of winding to the winding end side. In the predetermined range (38) up to the predetermined position (37) heading, the first gap (G1) on the inlet side in the gap between the blower (11) and the side wall (36) in the radial direction of the blower (11) is narrow. The side wall portion (36) is inclined with respect to the rotation axis (11a) so that the second gap (G2) on the side opposite to the suction port is widened, and the side wall portion (36) rotates in a range excluding a predetermined range. The first case part (24) on the inlet side, which is parallel to the axis (11a) and has an air-conditioning case (10) whose outer wall is divided by a dividing surface (23) perpendicular to the rotation axis (11a). And a second case portion (25) on the side opposite to the suction port, 23) adopts a structure located in the middle portion in the direction parallel to the side wall portion rotating shaft of the (36) (11a).

  In this configuration, when the side wall portion in the entire area of the scroll case portion (30) is divided into the suction port side and the anti-suction port side to be integrated with the first and second case portions, the predetermined range (38 ), The undercut portion is generated during resin molding of the first and second case portions due to the portion on the side opposite to the suction port of the side wall portion (36).

  Therefore, in the first aspect of the present invention, the side wall portion (36) in the predetermined range (38) of the scroll case portion (30) is separated from the first and second case portions (24, 25). 51), and the side wall portion (36) in a range excluding a predetermined range of the scroll case portion (30) is formed integrally with the first and second case portions (24, 25). .

  According to this, the side wall part (36) in the predetermined range (38) causing the occurrence of the undercut part is a separate part from the first and second case parts, and the side wall part (36) in the range excluding the predetermined range. Since the first and second case portions are integrated with each other, the first and second case portions can be easily punched during resin molding of the first and second case portions.

  In the invention according to claim 2, the scroll case part (30) is arranged at a position where the nose part (31) is close to one end of the cooling heat exchanger (12), and the interior of the air conditioning case (10). Is provided with a holding wall (40) extending in parallel to the rotation shaft (11a) at a position close to the nose portion (31) and holding one end of the cooling heat exchanger (12). The wall (40) is characterized by being divided into three parts of a first case part (24), a second case part (25), and a separate part (51).

  Here, in general, the higher the height of the walls of the first case portion and the second case portion, the more likely the wall collapses and becomes distorted during resin molding, resulting in lower dimensional accuracy.

  On the other hand, according to the invention described in claim 2, compared to the case where the holding wall of the cooling heat exchanger is divided into two parts, the first case part and the second case part, The height of the part which each of 1 case part and 2nd case part comprises can be suppressed. Thereby, the dimensional accuracy of a holding wall can be made high and generation | occurrence | production of the wind leak by the clearance gap producing between a holding wall and the heat exchanger for cooling can be prevented.

  In the second aspect of the present invention, for example, as in the third aspect, the scroll case portion (30) may be disposed directly above the cooling heat exchanger (12).

  In addition, the code | symbol in the bracket | parenthesis of each means described in this column and the claim shows the correspondence with the specific means as described in embodiment mentioned later.

(First embodiment)
FIG. 1 is a side view of a vehicle air conditioner according to a first embodiment of the present invention, FIG. 2 is a side view of the vehicle air conditioner viewed from the direction of arrow II in FIG. 1, and FIG. It is the III-III sectional view taken on the line of the vehicle air conditioner. In addition, the directions such as up and down in FIGS.

  The vehicle air conditioner 1 according to the present embodiment is arranged in front of the instrument panel of the vehicle and in the center in the left-right direction. In FIG. 1, the left side of the vehicle air conditioner 1 is the passenger seat side of the right-hand drive vehicle.

  First, a schematic configuration of the vehicle air conditioner 1 will be described. The vehicle air conditioner 1 includes an air conditioning case 10 shown in FIGS. 1 and 2, a blower 11 accommodated in the air conditioning case 10 as shown in FIG. 3, an evaporator 12, and a heater core 13.

  The air conditioning case 10 houses the blower 11, the evaporator 12, the heater core 13, and the like and forms an air passage therein.

  The blower 11 rotates around the rotating shaft 11a and blows air to form an air flow in the air conditioning case 10, and a centrifugal multiblade fan is used. The direction of the rotating shaft 11a of the blower 11 is horizontal and parallel to the vehicle left-right direction.

  The evaporator 12 is a cooling heat exchanger that cools air by exchanging heat between the refrigerant passing through the inside and the air sucked into the air conditioning case 10 by the blower 11. The heater core 13 is a heat exchanger for heating that heats the air by exchanging heat between the engine coolant and the air that has passed through the evaporator 12.

  In the air conditioning case 10, the blower 11 is disposed on the upper side and on the front side of the vehicle, the evaporator 12 is disposed on the front side of the vehicle on the lower side of the blower 11, and the heater core 13 is disposed on the lower side of the blower 11 and on the vehicle than the evaporator 12. It is arranged on the rear side. For this reason, in the air conditioning case 10, the wind blown downward from the blower 11 passes through the evaporator 12 and the heater core 13 while making a U-turn and flows upward of the air conditioning case 10. Yes.

  Next, details of the air conditioning case 10 will be described.

  The air conditioning case 10 is made of resin, and is configured by combining a plurality of divided case bodies. Specifically, as shown in FIGS. 1 and 2, the upper case portion 21 and the lower case portion 22 are mainly configured.

  Further, as shown in FIG. 1, the upper case portion 21 has a dividing surface 23 in the center in the left-right direction of the vehicle, and is configured by a left first case portion 24 and a right second case portion 25. ing. This dividing surface 23 is perpendicular to the rotating shaft 11 a of the blower 11. The dividing surface 23 divides the outer wall of the upper case portion 21.

  As shown in FIG. 1, the air conditioning case 10 has an inside / outside air switching box 14 connected to the left side in the drawing, which is the air inlet side. In FIG. 1, the right side of the air conditioning case 10 is the anti-suction port side.

  Further, as shown in FIG. 3, a scroll case portion 30 is integrally formed in the air conditioning case 10. This integral means that it is continuous with the same material and is not a separate part. The scroll case unit 30 is located directly above the evaporator 12 in the air conditioning case 10. And the nose part 31 and the blower outlet 32 of the scroll case part 30 are adjoining to the upper end part 12a of the evaporator 12. FIG.

  Here, FIG. 4 shows a plan view of the scroll case portion 30 as viewed from the suction port side which is the back side of the paper in FIG. 3, and FIG. 5 shows a cross-sectional view taken along line VV in FIG.

  The scroll case unit 30 accommodates the blower 11 and forms a passage for the air blown out from the blower 11. The scroll case portion 30 is formed in a spiral shape, and the air passage is configured to guide air from the winding start portion 33 side, which is the nose portion 31, to the air outlet 32 via the winding end portion 34. The winding start portion 33 means a portion having the shortest distance from the blower 11.

  Incidentally, as shown in FIGS. 4 and 5, the blower 11 has an annular shape that connects a large number of plate-like blades 11b arranged around the rotation shaft 11a and a large number of blades 11b on one end side in the rotation axis direction. A side plate 11c and a main plate 11d coupled to the rotating shaft 11a while connecting a large number of blades 11b on the other end side in the rotating shaft direction are provided. The rotation direction of the blower 11 is clockwise in FIG.

  The scroll case portion 30 is formed with a suction port 35 for sucking air at one end side in the rotation axis direction, and an electric motor is attached to the other end side in the rotation axis direction, that is, the side opposite to the suction port 35. ing.

  The scroll case portion 30 is located on the radially outer side of the blower 11 and has a side wall portion 36 that forms an air passage with the outer edge of the blower 11. As shown in FIG. 3, the side wall portion 36 includes a partition wall 15 that partitions the internal space of the air conditioning case 10 and a part of the outer wall 16 that forms the outer shape of the air conditioning case 10.

  As shown in FIG. 5, in the nose portion 31, with respect to the distance between the blower 11 and the side wall portion 36, the gap G <b> 1 on the suction port side is narrow and the gap G <b> 2 on the anti-suction port side is wide. And in the predetermined range 38 to the predetermined position 37 where the winding angle θ from the nose portion 31 forms a predetermined angle with the center 11a of the blower 11 as a reference, the gap G1 on the suction port side and the anti-suction port are maintained while maintaining this relationship. The difference between the gap G2 on the side and the gap G2 on the side gradually decreases, and in the range from the predetermined position 37, which is a range excluding the predetermined range 38, to the winding end 34 side, the gap G1 on the inlet side and the gap G2 on the anti-suction port side are It is the same size. The predetermined position 37 is located, for example, in a range where the winding angle θ is 20 degrees or more and 135 degrees or less.

  For this reason, the side wall portion 36 of the scroll case portion 30 is inclined in a predetermined range 38 from the nose portion 31 to the predetermined position 37 in the rotation direction of the blower 11, and the inner wall is not parallel to the rotation shaft 11a but is inclined. After the position 37, the inner wall is parallel to the rotation axis.

  Further, inside the air conditioning case 10, as shown in FIG. 3, the upper end of the evaporator 12 is adjacent to the lower side of the side wall portion 36 of the scroll case portion 30 from the nose portion 31 to the predetermined position 37. An upper end side holding wall 40 for the evaporator that holds the portion 12a is provided. The upper end side holding wall 40 is continuous with the nose portion 31. Further, the upper end side holding wall 40 extends in a direction perpendicular to the paper surface in FIG. 3, that is, in a direction parallel to the rotation shaft 11 a of the blower 11. Further, the upper end holding wall 40 is provided with a projecting portion 40a for sealing. The protrusion 40 a protrudes toward the evaporator 12 and prevents air leakage between the upper end holding wall 40 and the evaporator 12 by contacting the evaporator 12.

  The evaporator 12 is held substantially in the vertical direction by the upper end holding wall 40 and the lower end holding wall 41 that holds the lower end portion 12b of the evaporator 12 provided below the upper end holding wall 40. ing. The evaporator 12 is slightly inclined with respect to the vertical direction so that the air suction surface faces upward.

  Further, an upper end holding wall 42 for the heater core that holds the upper end portion 13a of the heater core 13 is provided in the air conditioning case 10 continuously next to the upper end holding wall 40 for the evaporator. The upper end holding wall 42 is also provided with a projecting portion 42a for sealing. The heater core 13 is held substantially in the vertical direction by the upper end holding wall 42 and the lower end holding wall 43 that holds the lower end portion 13b of the heater core 13 provided below the upper end holding wall 42. . The heater core 13 is slightly inclined with respect to the vertical direction so that the air suction surface faces downward.

  Although not shown in the figure, the air conditioning case 10 has cold air and hot air at a branch point between a bypass passage 17 through which the cool air flows by bypassing the heater core 13 and a passage 18 through which the cool air flows toward the heater core 13. An air mix door for adjusting the mixing ratio is provided.

  Further, a face blowing opening 44, a foot blowing opening 45, and a defroster opening 46 are provided in a portion of the air conditioning case 10 on the downstream side of the air flow of the evaporator 12 and the heater core 13. A blowing mode door (not shown) that opens and closes the portions 44, 45, and 46 is provided. Air conditioned air adjusted to a predetermined temperature is blown out from these openings 44, 45, 46.

  Here, FIG. 6 shows a cross-sectional view taken along the line VI-VI in FIGS. 6 is a view as seen from the back side of the paper in FIG. 1. Therefore, the left-right direction is opposite to FIG. 1, the left side in the drawing is the anti-suction port side, and the right side in the drawing is the suction port. On the side.

  As shown in FIG. 6, the dividing surface 23 of the air conditioning case 10, that is, the position of the mating surface 23 between the first case portion 24 and the second case portion 25 is the center in the vehicle left-right direction, and the scroll case portion 30. This is an intermediate position of the side wall portion 36 in the rotation axis direction. The intermediate position of the side wall portion 36 is a position where the scroll case portion 30 is divided into a half on the suction port side and a half on the anti-suction port side.

  And the die-cutting direction at the time of resin molding of the 1st case part 24 and the 2nd case part 25 is a vehicle left-right direction, ie, a direction parallel to the rotating shaft 11a like the arrows K1 and K2 in FIG. .

  Temporarily, the entire range of the side wall portion 36 of the scroll case portion 30 is divided by the dividing surface 23 in FIG. 6, and the half on the suction port side of the scroll case portion 30 is integrated with the first case portion 24. When the half on the side opposite to the suction port is integrated with the second case portion 25, as described in the section “Problems to be solved by the invention”, the portion facing the nose portion 31 of the second case portion 25 is The undercut portion 50 is obtained. Note that the shaded area in FIG. As described above, the undercut portion 50 occurs when the scroll case 30 has a first gap G1 on the suction port side that is narrow in the portion of the predetermined range 38 from the nose portion 31 to the predetermined position 37, and the anti-suction port. This is because the side wall portion 36 is inclined so that the second gap G2 on the side becomes wider.

  Therefore, in the present embodiment, as shown in FIGS. 6 to 9, the portion of the predetermined range 38 from the nose portion 31 to the predetermined position 37 of the scroll case portion 30 is designated as either the first case portion 24 or the second case portion 25. Are not integrated, but are configured as separate parts 51.

  7 is an enlarged view showing only the separate part 51 in FIG. 6, FIG. 8 is a plan view of the separate part seen from the side opposite to the suction port, and FIG. 9 is another view seen from the suction side. It is a top view of a body part. 8 and 9 are views of the separate part 51 as seen from a direction parallel to the rotating shaft 11a of the blower 11. FIG. 8 is a plan view of a separate part viewed from the same direction as FIG.

  As shown in FIGS. 3 and 8, the separate part 51 includes a part of a predetermined range 38 from the nose part 31 to the predetermined position 37 of the scroll case part 30, a part of the upper end side holding wall 40 for the evaporator, The heater core 13 is a single part integrated with a part of the upper end side holding wall 42.

  On the other hand, each of the first case portion 24 and the second case portion 25 has a portion in which the inner wall of the side wall portion 36 after the predetermined position 37 in the scroll case portion 30 is parallel to the rotation axis. ing.

  Therefore, according to the present embodiment, since the second case portion 25 has a shape that can be easily removed during resin molding, the first case portion 24 and the second case portion 25 can be molded with resin.

  Here, the comparative example 1 of this embodiment is shown in FIG. FIG. 10 is a cross-sectional view corresponding to FIG. The comparative example 1 changes the position of the part 23a of the division surface 23 of the air-conditioning case 10 of this embodiment shown in FIG. That is, in Comparative Example 1, as shown in FIG. 10, the side wall portion 36 is not divided for the predetermined range 38 from the nose portion 31 to the predetermined position 37 of the scroll case portion 30, and the side wall portion 36 in the predetermined range 38 is not divided. All are integrated into the first case portion 24.

  As described above, in the first comparative example, the first case portion 24 and the second case portion 25 are provided with the first case portion 24 having a portion that causes the undercut portion in the die-cutting direction of the second case portion 25. Can be punched in the punching directions K1 and K2, respectively.

  However, in Comparative Example 1, all of the side wall portion 36 in the predetermined range 38 from the nose portion 31 to the predetermined position 37 is integrated with the first case portion 24, so that the nose portion 31 formed in the first case portion 24 The side wall portion 36 in the predetermined range 38 up to the predetermined position 37 is higher than the outer wall portion of the first case portion 24. For this reason, the wall of the first case portion 24 is likely to be distorted during resin molding.

  On the other hand, in this embodiment, the side wall part 36 in the predetermined range 38 from the nose part 31 of the scroll case part 30 to the predetermined position 37 is configured as a separate part 51, and the predetermined position 37 from the nose part 31 is configured. Since the entire side wall portion 36 in the predetermined range 38 up to this point is not integrated with the first case portion 24, the problem that the wall collapses or is apt to be distorted during resin molding in Comparative Example 1 can be solved.

  Moreover, in this embodiment, as shown in FIGS. 6-9, not only the part of the predetermined range 38 from the nose part 31 of the scroll case part 30 to the predetermined position 37 but a part of the upper end side holding wall 40 for evaporators. Is also constituted by a separate part 51. The part of the upper end side holding wall 40 for the evaporator is a central part in the left and right direction in FIG. 6 of the upper end side holding wall 40 for the evaporator, that is, in a direction parallel to the rotating shaft 11 a of the blower 11. .

  Thus, in this embodiment, as shown in FIG. 6, the upper end side holding wall 40 for the evaporator is divided into three parts, that is, the first case part 24, the separate part 51, and the second case part 25. is doing. Therefore, the heights H1, H2, and H3 of the upper end holding wall 40 for the evaporator that each of the first case part 24, the separate part 51, and the second case part 25 configure are the same as those of the upper end holding wall 40 for the evaporator. About 1/3 of the total height. The height of the upper end side holding wall 40 for the evaporator is a height in a direction parallel to the rotating shaft 11 a of the blower 11.

  Here, at the time of resin molding, the higher the height of the portion constituting the upper end side holding wall 40 for the evaporator, the easier the wall collapses and distortion occurs at the time of resin molding, so the upper end side holding wall 40 for the evaporator. The dimensional accuracy will be low. If the dimensional accuracy of the upper end side holding wall 40 is lowered, the possibility of air leakage from between the protrusion 40a and the evaporator increases.

  According to the present embodiment, each of the first case portion 24 and the second case portion 25 is compared with the case where the upper end side holding wall 40 for the evaporator is divided into the first case portion 24 and the second case portion 25. It is possible to suppress the height of the upper end side holding wall 40 for the evaporator that is configured. Thereby, the dimensional accuracy of the upper end side holding wall 40 for an evaporator becomes high, and generation | occurrence | production of the wind leakage from between the protrusion part 40a and an evaporator can be prevented.

  Next, a method for assembling the air conditioning case 10 of this embodiment will be described. In the present embodiment, before assembling the first and second case portions 24 and 25, the separate part 51 is assembled to one of the first and second case portions 24 and 25, and then the first and second cases are assembled. The parts 24 and 25 are assembled. At this time, the fitting portion 52 made of an uneven surface provided at the tip of the wall of the separate part 51 and the fitting portion made of an uneven surface provided at the tips of the walls of the first and second case portions 24 and 25 are provided. Fit. Then, the upper case portion 21 in FIG. 1 is formed by fixing the first and second case portions 24 and 25 with fixing means such as a metal spring clip and a screw. Further, the air conditioning case 10 is formed by assembling the lower case portion 22 and the like to the upper case portion 21.

  The vehicle air conditioner 1 shown in FIGS. 1 and 2 is mounted on a right-hand drive vehicle. However, when mounted on a left-hand drive vehicle, the first and second case portions 24 and 25 are left as they are. Only the separate part 51 may be used and changed to a shape for a left-hand drive vehicle. As for the first and second case parts 24 and 25, the opening part used as the suction port in the first case part 24 is changed for motor attachment, and the opening part used for the motor attachment in the second case part 25. Change to for inlet.

  Normally, if the scroll case part is symmetrical when divided on the suction port side and the anti-suction port side, it is possible to deal with the right handle and the left handle simply by switching the position of the motor and the position of the suction port. .

  However, as described above, the scroll case portion 30 of the present embodiment does not have a symmetrical shape when divided on the suction port side and the anti-suction port side. For this reason, as in Comparative Example 1, in the case where all of the side wall portion 36 in the predetermined range 38 from the nose portion 31 to the predetermined position 37 is integrated with the first case portion 24, the vehicle on which the vehicle air conditioner 1 is mounted. Depending on the position of the handle, it becomes necessary to change the shapes of the first and second case portions 24 and 25. That is, in the case of the comparative example 1, it is necessary to prepare the first and second case portions having different structures depending on the handle position.

  On the other hand, in this embodiment, the side wall in the predetermined range 38 from the nose part 31 which is an asymmetrical structure part when it divides | segments into the suction inlet side and the anti-suction inlet side among the scroll case parts 30 to the predetermined position 37. The part 36 is configured as a separate part 51, and the remaining symmetrical structural parts are formed integrally with the first and second case parts 24 and 25. Therefore, according to the present embodiment, only the separate part 51 needs to be changed according to the left handle and the right handle, and the first case portion 24 and the second case portion 25 are shared by the right handle and the left handle. Can be used structure.

(Other embodiments)
(1) In the above-described embodiment, the part of the predetermined range 38 from the nose part 31 to the predetermined position 37 of the scroll case part 30, a part of the upper end side holding wall 40 for the evaporator, and the upper end side holding wall of the heater core 13. Although a part of 42 is defined as one separate part 51, at least a part in a predetermined range 38 from the nose part 31 to the predetermined position 37 of the scroll case part 30 may be a separate part.

  For example, only the portion of the predetermined range 38 from the nose portion 31 to the predetermined position 37 of the scroll case portion 30 is a separate part, and the upper end side holding wall 40 for the evaporator and the upper end side holding wall 42 of the heater core 13 are the first. The second case portions 24 and 25 may be used. Further, for example, a part of the predetermined range 38 from the nose part 31 to the predetermined position 37 of the scroll case part 30 and a part of the upper end side holding wall 40 for the evaporator are separate parts, and the upper end side holding wall of the heater core 13 is used. 42 may be constituted by the first and second case portions 24 and 25.

  (2) In the above-described embodiment, the position of the mating surface 23 between the first case portion 24 and the second case portion 25 is an intermediate position in the rotation axis direction of the side wall portion 36 of the scroll case portion 30. It does not have to be at the intermediate position, and may be any part of the side wall portion 36 in the direction of the rotation axis.

  (3) In the above-described embodiment, in the air conditioning case 10, the blower 11 is disposed on the upper side and the vehicle front side, the evaporator 12 is disposed on the vehicle front side below the blower 11, and the heater core 13 is disposed on the air blower 11. Although arranged on the lower side and the vehicle rear side with respect to the evaporator 12, the layout of the blower 11, the evaporator 12, and the heater core 13 is not limited to this and can be arbitrarily changed.

  (4) In the above-described embodiment, the present invention is applied to the vehicle air conditioner. However, the present invention is not limited to the present invention and the vehicle, and can be applied to other uses such as home use.

It is a side view of the vehicle air conditioner in 1st Embodiment of this invention. It is the side view seen from the arrow II direction of the vehicle air conditioner in FIG. It is the III-III sectional view taken on the line of the vehicle air conditioner in FIG. It is a top view of the scroll case part seen from the inlet side. It is the VV sectional view taken on the line of the scroll case part in FIG. It is the VI-VI sectional view taken on the line in FIG. 2 and FIG. It is a front view which shows only the separate components in FIG. It is a top view of a separate part seen from the anti-suction port side. It is a top view of a separate part seen from the inlet side. It is sectional drawing of the vehicle air conditioner in a comparative example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vehicle air conditioner 10 Air conditioning case 11 Blower 11a Rotating shaft 12 Evaporator 24 1st case part 25 2nd case part 30 Scroll case part 31 Nose part 36 Side wall part 40 Upper end side holding wall for evaporators 51 Separate parts

Claims (3)

An air conditioning case (10) that forms an air passage therein and houses a heat exchanger (12) that exchanges heat with air;
Centrifugal blower (11) that is housed in the air conditioning case (10) and blows air by rotating around the rotation shaft (11a);
A side wall portion (36) formed integrally with the air conditioning case (10), provided with an inlet on one end side of the rotating shaft (11a), and forming an air passage between the outer edge of the blower (11). A scroll case portion (30) having
In the predetermined range (38) from the nose part (31) located at the beginning of winding to the predetermined position (37) toward the winding end side, the scroll case part (30) is arranged in the radial direction of the blower (11). Among the distances between (11) and the side wall part (36), the side wall part (36) so that the first distance (G1) on the inlet side is narrow and the second distance (G2) on the side opposite to the inlet is wide. Is inclined with respect to the rotation axis (11a), and in a range excluding the predetermined range, the side wall (36) is parallel to the rotation axis (11a),
The air conditioning case (10) has a first case portion (24) on the suction port side and a first case portion on the anti-suction port side whose outer wall is divided by a split surface (23) perpendicular to the rotation shaft (11a). Two case parts (25),
The dividing surface (23) is located at a midpoint in the direction parallel to the rotation axis (11a) of the side wall (36),
The side wall portion (36) in the predetermined range (38) of the scroll case portion (30) is formed as a separate part (51) with respect to the first and second case portions (24, 25), and The air conditioner characterized in that the side wall portion (36) in a range excluding the predetermined range of the scroll case portion (30) is formed integrally with the first and second case portions (24, 25). The air conditioning case (10) includes a cooling heat exchanger (12) for cooling the air,
The scroll case part (30) is disposed at a position where the nose part (31) is close to one end of the cooling heat exchanger (12),
Inside the air conditioning case (10), a holder that extends in parallel with the rotating shaft (11a) and holds one end of the cooling heat exchanger (12) at a position close to the nose portion (31). A wall (40) is provided,
The said holding wall (40) is divided | segmented and comprised by three parts, the said 1st case part (24), the said 2nd case part (25), and the said separate component (51), It is characterized by the above-mentioned. Item 2. The air conditioner according to item 1.   The air conditioner according to claim 2, wherein the scroll case part (30) is disposed directly above the cooling heat exchanger (12).

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