JP4482881B2 - Air conditioning unit for vehicles - Google Patents

Description

  The present invention relates to a structure of an offset type air conditioning unit for a vehicle in which, for example, a blower unit and a temperature control unit are juxtaposed in the left-right direction of the vehicle, and more particularly to a case structure on the temperature control unit side.

  In a vehicle air-conditioning unit, when the air blowing direction from the blower and the upwind side surface of the cooling heat exchanger are arranged so as to be substantially orthogonal to each other, the cooling heat exchanger near the blower and far from the blower It is necessary to equalize the wind speed distribution on the side and prevent a large temperature difference from occurring in the air that passes through the cooling heat exchanger and is sent to the leeward side. For this reason, a structure that rectifies air by providing a rectifying guide having one or a plurality of step surfaces on the side opposite to the cooling heat exchanger in the air flow path connecting the blower and the cooling heat exchanger, For example, as shown in FIG. 6 shown as a conventional example of Patent Document 1 and Patent Document 2 and Patent Document 4, it is already known.

  Further, as a vehicle air conditioning unit, a so-called offset type in which a blower unit in which a blower or the like is housed is arranged in parallel in a vehicle left-right direction with respect to a temperature control unit in which a cooling heat exchanger, a heating heat exchanger, or the like is housed. There are things. With respect to such an offset type air conditioning unit for vehicles, it is required that the temperature control unit be shared between the right-hand drive vehicle and the left-hand drive vehicle. In order to meet this demand, for example, an automobile air conditioner described in Patent Document 3 and a vehicle air conditioner described in Patent Document 4 are already known.

And the case which comprises the temperature control unit among offset type | mold vehicle air-conditioning units is a thing of the 2 division type comprised by a pair of case member divided | segmented into a vehicle left-right direction, or an upper case member and lower side For example, a vehicle air conditioner or a patent document disclosed in Patent Document 5 is a three-divided type composed of a case member and a pair of split case members in which the upper case portion is further divided in the vehicle left-right direction. The vehicle air conditioner shown in FIG.
JP-A-8-72530 JP-A-9-309320 JP 2001-47854 A JP 2004-136709 A Japanese Patent Application Laid-Open No. 10-1000064 JP 2001-171332 A

  If the wall part of the air conditioning case is simply formed in a staircase shape having a plurality of step surfaces so that the wall part of the air conditioning case itself becomes a rectification guide, the step surfaces of the rectification guide stairs are reversed in the right-hand drive car and the left-hand drive car. Therefore, in order to make the temperature control unit common, it is necessary to devise the structure of the case having the rectifying guide. In this regard, in the vehicle air conditioner disclosed in Patent Document 4, the duct member integrally formed with the rectifying guide is a separate member from the main case of the temperature control unit, and the duct member has a vertically symmetrical shape. In the case of a right-hand drive vehicle, the main case is joined so that one discharge port is located above the vehicle, and in the left-hand drive vehicle, the main case is joined upside down so that the other discharge port is located above the vehicle. ing. As a result, the same duct member and main case can be used even if the step surface of the rectifying guide staircase is reversed between the right-hand drive car and the left-hand drive car, and the temperature control unit can be shared. Yes.

  However, the vehicle air conditioner disclosed in Patent Document 4 is based on the premise that the duct member is separated from the main case and is further divided into upper and lower parts. As for the structure in which the case member or the upper case member is divided in the vehicle left-right direction as described above, it is difficult to remove the mold from the mold when manufacturing each case member. There is a disadvantage that it cannot be applied as it is.

  On the other hand, as shown in FIG. 5 of the present application, a member constituting the flow straightening guide (hereinafter referred to as a flow straightening guide constituting member 100) is completely separate from the case 101, and for example, the vehicle width direction of the temperature control unit 102 The case 101 is made into a left and right divided case member 101a, 101b by replacing the straightening and rectifying guide component member 100 with the stepped surface in the forward / reverse direction between the right-hand drive car and the left-hand drive car. It is possible to cope with the structure of dividing. However, in this structure, the number of parts for the rectifying guide constituent member 100 is increased, the number of man-hours is increased, and the mold cost of the rectifying guide constituent member 100 is also required. It is thought that it will be higher. In FIG. 5, 103 is a connection port with the blower unit, 104 is a heat exchanger for cooling such as an evaporator, and the structure of other temperature control means such as a heat exchanger for heat and an opening for blowing are shown in FIG. It is omitted.

  Therefore, the present invention provides a vehicle air conditioning unit in which a blower unit and a temperature control unit are arranged in the left-right direction of the vehicle, and a structure in which a rectifying guide is integrated with a wall portion of the case of the temperature control unit, It is an object of the present invention to share both the temperature control unit between a right-hand drive vehicle and a left-hand drive vehicle while having a configuration in which all or a part is divided in the vehicle left-right direction.

  An air conditioning unit for a vehicle according to the present invention is configured by connecting a blower unit in which a blower or the like is stored and a temperature control unit in which a temperature control unit such as a cooling heat exchanger is stored along the left-right direction of the vehicle. The temperature control unit case includes a plurality of divided case members so that at least an upper portion of the case can be divided in the left-right direction of the vehicle. A wall portion facing the upwind side of the heat exchanger is composed of a central wall portion and other wall portions located on both sides thereof, and the other wall portion is compared with the central wall portion. The cooling wall is separated from the cooling heat exchanger, a connecting portion is formed between the central wall portion and the other wall portion, and the other wall is formed on both sides of the cooling heat exchanger. The side edge of the part is the periphery A part of the opening is provided, and one of the openings is attached with a cover member that also serves as a plug for the attachment / detachment opening of the heat exchanger for cooling. A step-like insertion portion that is inserted into the air, and the insertion portion has air that is sent from the blower unit with its end contacting the boundary portion between the central wall portion and the other wall portion. It is the structure which forms the rectification | straightening guide which rectifies | straightens toward the said heat exchanger for cooling (Claim 1). The vehicle air-conditioning unit has dimensions from a step surface at a connecting portion between one of the central wall portion and the other wall portion to a dividing line that divides the central wall portion in the left-right direction of the vehicle. The dimension from the step surface of the central wall portion and the other wall portion connected to the other to the dividing line dividing the central wall portion in the vehicle left-right direction is equal. (Claim 2).

  On the other hand, the opening of the blower unit is connected to the other of the openings of the case of the temperature control unit. In this case, the portion other than the air passage in the opening of the case of the temperature control unit may be closed by the case of the blower unit.

  According to the present invention, the rectifying guide is formed by the step surface at the connecting portion between the central wall portion facing the cooling heat exchanger of the temperature control unit and the other wall portion and the step surface of the cover member attached later. And the dimension from the step surface between the central wall portion and one of the other wall portions to the dividing line dividing the central wall portion in the vehicle left-right direction, and the central wall portion and the other wall portion Since the dimension from the step surface to the other side to the dividing line that divides the central wall portion in the vehicle left-right direction is the same, even in the offset type vehicle air conditioning unit, the rectifying guide is connected to the case wall portion for the temperature control unit. While being integrally formed, it can be shared between right-hand drive cars and left-hand drive cars.

  Moreover, according to the present invention, the case of the temperature control unit is divided into two in the vehicle left-right direction, or divided into two in the vehicle vertical direction, and the upper case member is further divided in the vehicle left-right direction to be divided into three in total. When the rectifying guide is integrally formed on the wall portion facing the windward side with respect to the cooling heat exchanger of the case, the dividing line dividing the case into the vehicle left and right with respect to the central wall portion of the rectifying guide is the vehicle vertical direction Even if it passes through, the removable cover member also serves as a part of the rectifying guide, and another part of the rectifying guide that selectively forms part of the central wall part that constitutes a part of the rectifying guide By separating both of the wall portions from the cooling heat exchanger, it is possible to easily perform the die-cutting operation of each divided case member from the mold.

  The rectifying guide is mainly formed integrally with the case of the temperature control unit, and other parts also use the cover member and the case of the blower unit that cover the attachment / detachment port of the existing cooling heat exchanger. Compared to the case where a guide member is used, the number of parts can be reduced and the die cost for the straightening guide member can be reduced. Furthermore, by having this flow straightening guide, even when the air blowing direction from the blower and the windward side surface of the cooling heat exchanger are arranged so as to be substantially orthogonal to each other, the cooling heat exchanger The intended purpose of improving the air conditioning performance can be achieved by making the wind speed distribution uniform on the side closer to the blower and on the side farther from the blower.

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

  1 to 4, an example of an embodiment of an air conditioning unit 1 according to the present invention is shown. The air conditioning unit 1 is mounted on a vehicle, for example, and includes a blower unit 2 and a temperature control unit 3. The blower unit 2 and the temperature control unit 3 are offset types arranged along the left-right direction of the vehicle along a fire wall (not shown), and communicate with each other through an opening 27 described later.

  Among these, the blower unit 2 is arrange | positioned in the back of the instrument panel (not shown) located in the step of a passenger seat, for example. As shown in FIGS. 1, 3, and 4, the blower unit 2 has an inside air introduction port 5 a and an outside air introduction port 5 b that are appropriately opened, and the air introduced from the inside air introduction port 5 a and the outside air introduction port 5 b An inside / outside air switching door (not shown) and an air blower 12 for appropriately selecting the air to be introduced are housed in the case 4. The blower 12 includes, for example, a centrifugal multiblade fan (sirocco fan) and a motor that drives the fan. And the case 4 which comprises the outer shape of the blower unit 2 is divided | segmented along the radial direction of the rotating shaft of the air blower 12, and is provided with the upper case member 4a and the lower case member 4b. The lower case member 4b has a scroll shape.

  On the other hand, the temperature control unit 3 is arranged on the back side of the center console located in the center in the left-right direction of the vehicle, and heat exchange for cooling such as an evaporator that cools the air sent from the blower unit 2 7, the heat exchanger 8 for heating such as a heater core for reheating the air cooled by the cooling heat exchanger 7, and the cooling heat exchanger 7 and the heating heat exchanger 8. The case 6 has an air mix door 9 that adjusts the ratio of the air sent to the heating heat exchanger 8 and the bypass air. In this embodiment, as shown in FIG. 1, the case 6 can be divided into an upper case member 10 and a lower case member 11, and the upper case member 10 is further divided into two divided case members 10a and 10b. It can be divided.

  The cooling heat exchanger 7 is a stacked heat exchanger in which, for example, tubes and fins are stacked in a plurality of stages between a pair of tanks, and an inlet / outlet portion is connected to a block having an expansion valve to connect other capacitors, etc. It constitutes the refrigeration cycle together with the equipment. The heating heat exchanger 8 is a stacked heat exchanger in which, for example, a plurality of tubes and fins are stacked, and the heating heat exchanger 8 has a partition portion that extends along the longitudinal direction. It has at least one partitioned tank, and has an inlet / outlet part connected to a pipe for circulating engine cooling water in the tank. Since the air mix door 9 is a well-known one, the configuration thereof is not specifically shown in FIGS. 2 to 4. For example, the air mix door 9 has an airflow side area that is approximately half of the air flow path and extends in the vertical direction of the vehicle. It is a movable sliding door type.

  Although not shown, the temperature control unit 3 forms a hot air passage in the case 6 through which air reheated by the heating heat exchanger 8 passes on the leeward side of the heating heat exchanger 8. In addition, a cold air passage that bypasses the heating heat exchanger 8 is formed on the leeward side of the cooling heat exchanger 7, and further, the hot air that has passed through the hot air passage and the cold air that has passed through the cold air passage. The area of the air mix chamber is defined.

  A vent blowing opening 16 and a defrost blowing opening 17 are appropriately opened above the case 6 on the leeward side of the air mixing chamber of the temperature control unit 3, as shown in FIG. Although not shown, the foot blowing opening is appropriately opened below the case 6. These blowing openings 16 and 17 and the like are appropriately opened and closed by opening and closing operations of a blowing mode switching door (not shown) so that a desired blowing mode can be selected.

  However, according to such a configuration, the air taken into the blower unit 2 by the blower 12 from the inside / outside air introduction ports 5a and 5b is supplied to the cooling heat exchanger 7 of the temperature control unit 3 through the opening 27 described later. The ratio of the air that passes through the heating heat exchanger 8 and the air that bypasses is adjusted according to the opening of the air mix door 9. The air mixing chamber 9 is appropriately mixed in the air mix chamber on the leeward side and then opened in accordance with the air blowing mode, and is then opened from the air outlet through either the air outlet 16 or 17 or the foot air outlet. Blown out.

  By the way, the cooling heat exchanger 7 includes the direction of the air sent from the blower 12 housed in the blower unit 2 and the cooling housed in the temperature control unit 3, as shown in FIGS. It arrange | positions so that the direction of the windward side surface of the heat exchanger 7 may cross substantially orthogonally. Then, in the vicinity of the cooling heat exchanger 7 in the case 6 of the temperature control unit 3, as shown in FIG. 2, openings 20 and 21 that face both side surfaces of the cooling heat exchanger 7 are formed. And a wall portion 22 facing the upwind side surface of the cooling heat exchanger 7.

  In this embodiment, as shown in FIGS. 1 and 2, the wall portion 22 includes a central wall portion 23 and other wall portions 24 and 24 located on both sides thereof. , 24 are separated from the heat exchanger 7 for cooling as compared with the wall portion 23 on the central side, and a connecting portion 25 is provided between the wall portion 23 on the central side and the other wall portion 24. . And the dividing line M which divides | segments the said upper case member 10 into the division | segmentation case member 10a and the division | segmentation case member 10b passes in the side which hits the upper case member 10 among the wall parts 23 of the center side. The dimension L1 from the dividing line M of the central wall member 23 to one wall portion 24 and the dimension L2 from the dividing line M of the central wall member 23 to the other wall portion 24 are equal.

  The openings 20 and 21 are formed such that a part of the peripheral edge of the opening is formed at the end of the other wall portion 23 opposite to the connecting portion 25 and the range from the cooling heat exchanger 7 to the leeward side. Thus, the cooling heat exchanger 7 can be freely attached and detached from the openings 20 and 21, and the openings 20 and 21 also serve as attachment / detachment ports of the cooling heat exchanger 7.

  In the right-hand drive vehicle, as shown in FIG. 3, the opening portion 27 on the scroll tip side of the lower case member 4 b of the blower unit 2 is connected to the opening portion 20, and the opening portion 21 is closed by the cover member 30. On the other hand, in the left-hand drive vehicle, as shown in FIG. 4, an opening 27 on the scroll tip side of the lower case member 4 b of the blower unit 2 is attached to the opening 21, and the opening 20 is covered by the cover member 30. The structure which obstruct | occludes is taken. In this case, the cover portion 28 extends in the radial direction with respect to the opening 27 in the lower case member 4b of the blower unit 2, and the leeward side of the openings 20 and 21 from the side of the cooling heat exchanger 7 is provided. The range up to may be closed.

  The cover member 30 is inserted into the case 6 on the windward side of the cooling heat exchanger 7 with respect to the closed portion 31, which is connected to the case 6 and closes the side of the cooling heat exchanger 7. It is comprised integrally with the insertion part 32 to be worn. The insertion portion 32 is formed in a stepped shape, and the end portions of the insertion portion 32 come into contact with the boundary portion between the wall portion on the central side and the other wall portion at the time of insertion, thereby closing the openings 20 and 21.

  According to the above configuration, the opening portion 21 is closed with the cover member 30 in the right-hand drive vehicle, and the opening portion 20 is closed with the cover member 30 in the left-hand drive vehicle, so that the wall portion 23 on the center side and the other wall portions are closed. 24 in the stepped portion of the cover member 30 and the stepped surface of the cover member 30, the rectifying guide 35 on the windward side of the cooling heat exchanger 7 in each of the right-hand drive car and the left-hand drive car. Is formed. In addition, since the dimension L1 from the dividing line M of the central wall member 23 to the one wall portion 24 and the dimension L2 from the dividing line M of the central wall member 23 to the other wall portion 24 are equal, the cover member The size of the 30 stepped portions can be made common between the one inserted from the opening 21 and the one inserted from the opening 20, and the heat for cooling by providing the straightening guide 35 for the right-hand drive vehicle and the left-hand drive vehicle. The uniform wind speed distribution on the side closer to the fan of the exchanger and the side far from the fan can be made the same.

  In addition, the wall portion 22 is configured to be separated from the cooling heat exchanger 7 with respect to the wall portion 23 on the central side, and the other wall portions 24 and 24 are both separated from the heat exchanger 7 for cooling as compared with the wall portion 23 on the central side. The split case member 10a and the split case member 10b having a part of the side wall portion 23 and one of the other wall portions 23 are also arranged in the vehicle left-right direction when the split case members 10a and 10b are manufactured. Can be easily extracted.

  In the previous embodiments, the case 6 of the temperature control unit 3 is divided into the upper case member 10 and the lower case member 11, and the upper case member 10 is further divided into the divided case members 10a and 10b in the vehicle left-right direction. However, the configuration is divided into a total of three, but is not necessarily limited thereto. For example, the case 6 of the temperature control unit 3 may be configured by a two-case member that is divided into two in the vehicle left-right direction. Further, the number of stepped surfaces of the rectifying guide 35 is not limited to two cases as shown in FIGS. 3 and 4. Although not particularly shown, the other wall portions 24 are further away from the cooling heat exchanger 7. By providing a wall portion located in the vertical direction and having a connecting portion 25 that connects this wall portion and the other wall portion 24, or by increasing the number of steps of the stepped portion of the cover member 30. Three or more may be used.

FIG. 1 is an external view showing the overall configuration of an air conditioning unit according to the present invention. FIG. 2 is a schematic cross-sectional view of a temperature control unit of the above air conditioning unit. FIG. 3 is a schematic cross-sectional view of the above air conditioning unit for a left-hand drive vehicle. FIG. 4 is a schematic cross-sectional view of the above air conditioning unit for a right-hand drive vehicle. FIG. 5 is an explanatory diagram in which the temperature control unit is shared between the right-hand drive vehicle and the left-hand drive vehicle using the rectifying guide as a separate member from the case of the temperature control unit.

Explanation of symbols

1 Air conditioning unit (air conditioning unit for vehicles)
2 Blower unit 3 Temperature control unit 4 Case (Blower unit case)
6 Case (temperature control unit case)
7 Heat exchanger for cooling 10 Upper case member 10a Division case member 10b Division case member 11 Lower case member 22 Wall portion 23 Central wall portion 24 Other wall portion 25 Connection portion 27 Opening portion 30 Cover member 31 Blocking portion 32 Insertion site 35 Straightening guide M Dividing line L1 Dimension from the dividing line of the central wall member to one of the other two wall parts L2 From the dividing line of the central wall member to the other two wall parts Dimension to the other wall part of

Claims (4)

A blower unit in which a blower or the like is housed and a temperature control unit in which a temperature control means such as a cooling heat exchanger is housed are connected along the left-right direction of the vehicle. In the vehicle air conditioning unit configured with a plurality of divided case members so that the upper part can be divided in the vehicle left-right direction,
The case of the temperature control unit is configured such that a wall portion facing the windward side of the cooling heat exchanger is composed of a central wall portion and other wall portions located on both sides of the wall portion. The portion is separated from the cooling heat exchanger as compared to the central wall portion, and a connecting portion is formed between the central wall portion and the other wall portion,
Openings in which side ends of the other wall portions form part of a peripheral edge are provided on both sides of the cooling heat exchanger, and one of the openings is used as the cooling heat exchanger. A cover member that also serves as a closure of the attachment / detachment opening portion is attached, and the cover member has a step-like insertion portion that is inserted into the case of the temperature control unit at the time of attachment, and an end portion of the insertion portion is the end portion. It is a structure that forms a rectification guide that rectifies the air sent from the blower unit toward the cooling heat exchanger by contacting a boundary portion between a central wall portion and another wall portion. A vehicle air conditioning unit. A dimension from a step surface at a connecting portion between one of the central wall portion and the other wall portion to a dividing line that divides the central wall portion in the vehicle left-right direction; and the central wall portion 2. The vehicle according to claim 1, wherein a dimension from a step surface at a connecting portion with the other of the other wall portions to a dividing line dividing the wall portion on the center side in the vehicle left-right direction is equal. Air conditioning unit. The air conditioning unit for vehicles according to claim 1 or 2, wherein the opening of the blower unit is connected to the other of the openings of the case of the temperature control unit. 4. The vehicle air conditioning unit according to claim 3, wherein a portion other than the air passage in the opening of the case of the temperature control unit is closed by the case of the blower unit.

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