JP4362816B2 - Air conditioning unit - Google Patents

Description

  The present invention relates to an air conditioning unit used in a vehicle air conditioner.

  HVAC, which integrates a blower, an evaporator, and a heater, reduces costs by reducing the number of parts, and contributes to a reduction in mounting space due to its compact shape. However, a full center type HVAC in which a blower, an evaporator, and a heater are arranged in the front-rear direction of the vehicle cannot be mounted on, for example, a vehicle type having a short bonnet and having no space in the front-rear direction. Here, as a conventional invention, a full center type HVAC as described above is mounted by being rotated by 90 °, and the door shaft and the drive shaft of the control panel are arranged in parallel so that the number of cables can be reduced. It is disclosed (see Patent Document 1).

In addition, the blower unit, cooling unit, and heater unit are formed symmetrically with respect to the center line, and each lateral center line is projected onto a plane and arranged on one line so that the air conditioner is symmetrical in the longitudinal direction of the vehicle. In some cases, the air conditioner can be used by rotating 180 ° regardless of whether the driver's seat of the vehicle is on the right side or the left side, and the product is unified (see Patent Document 2).
JP 2002-52919 A JP 2001-158215 A

  According to the invention disclosed in Patent Document 1 or 2, the cost can be reduced by reducing the number of parts, manufacturing processes, etc. In order to meet the demand for further cost reduction, the intake unit as a whole There is a need to deal with issues related to one-piece construction, foot ducts, side vent ducts, and the like.

  Then, this invention makes it a subject to provide the air-conditioning unit which can solve the said problem and can aim at the further cost reduction.

In order to solve the above problems, the present invention provides, from one casing, an intake unit portion having an intake door, a scroll unit portion having at least a blower fan, a cooling unit portion having an evaporator, a heater core, an air mix door, A heater unit having a mode switching door, wherein the intake unit is provided with an inside air inlet and an outside air inlet, and the heater unit is provided with an air outlet . The blower fan, the evaporator, and the heater core are aligned in the vehicle width direction, the evaporator is installed substantially vertically in the cooling unit, and the rotation shaft of the motor of the blower fan is provided substantially vertically. In the casing that composes, The split surface is formed along the vehicle width direction, is divided into two in the vehicle front-rear direction across the split surface, and consists of a first part and a second part. In the intake unit portion, In the scroll unit portion in which the dividing surface is provided parallel to the axial direction of the rotation shaft of the intake door, and the blower fan is housed, the dividing surface is provided so as not to divide the tongue portion of the scroll. It is characterized (claim 1).

Further, it is preferable that at least a part of the operating means for displacing the intake door is formed integrally with the intake door (claim 2).

In addition, a foot duct that communicates with a part of the air outlet and guides the air to the feet of a passenger is formed integrally with the casing and extends at least to the lower end portion of the installation position of the evaporator. (Claim 3 ).

Further, one of the air outlets is divided into two, and one of the air outlets is a vent outlet that guides the air to the front of the occupant, and the other is a side vent that guides the air to both sides of the passenger compartment. It is preferable to use a blowout opening (claim 4 ).

Moreover, in the structure of the said Claim 4 , it is more preferable that one of the said air blowing outlets is formed in the upper surface of the said casing, and is divided into two in the vehicle front-back direction (Claim 5 ).

  According to the configuration of the first aspect, an intake unit portion in which an intake door or the like is accommodated, a scroll unit portion in which a blower fan or the like is accommodated, an evaporator core, or the like is accommodated by one casing constituted by two parts. A cooling unit portion, a heater unit portion in which a heater core and the like are housed are integrally formed. Thereby, since the number of parts which comprise an air-conditioning unit becomes fewer than before, cost reduction is realizable. Moreover, since the air-conditioning unit of this structure is long arranged in the vehicle width direction, it can be suitably used for, for example, a vehicle having a short hood and a space that is not available in the front and rear.

In addition, since the rotating shaft of the motor for rotating the blower fan is arranged substantially vertically, or the dividing surface of the casing is parallel to the axial direction of the intake door, a compact casing can be formed , Since the dividing surface of the casing is provided so as not to divide the tongue portion of the scroll portion of the scroll unit portion, the molding operation of the casing by die cutting or the like can be facilitated.

According to the configuration of the second aspect , the number of parts can be further reduced. The operating means corresponds to a rotating shaft or the like when the intake door is a rotary door.

According to the structure of the said Claim 3 , while the number of parts can be reduced further, the arrangement | positioning work of a foot duct can be made easy.

According to the structure of the said Claim 4 or 5 , while the number of parts can be reduced further, the temperature difference of the blowing air of a (center) vent and a side vent can be made small.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  An air conditioning unit 1 according to this embodiment shown in FIGS. 1 and 2 includes a casing 2 made of a resin material or the like, an intake door 3 for selectively switching intake air between inside air and outside air, and inside the casing 2 by rotation. A blower fan 4 that generates an air current, an air filter 5 that removes dust and the like in the intake air, an evaporator core 6 that forms part of the refrigeration cycle and removes heat of vaporization from the surrounding air, and a predetermined heat generation mechanism that removes the surrounding air. A heater core 7 for warming, an air mix door 8 for adjusting the ratio of the air passing through the evaporator core 6 and the heater core 7, and mode switching doors 9 and 10 for switching the place where the temperature-controlled air is blown are housed, and the casing. 2. Inside air inlet 15 through which the air inside the vehicle is guided, outside air inlet 16 through which the air outside the vehicle is guided, and a vent that guides the temperature-controlled air to the front of the passenger Air outlet 17, side vent air outlet 18 that guides temperature-controlled air to both sides of the passenger compartment, differential air outlet 19 that guides temperature-controlled air to the windshield, foot that guides temperature-controlled air to the feet of the passenger The blowout port 20 is formed. Here, the inside air inlet 15 and the outside air inlet 16 correspond to the air inlet described in the claims, and the vent outlet 17, the side vent outlet 18, the differential outlet 19, and the foot outlet 20 are provided. Corresponds to the air outlet described in the claims.

  In the casing 2, the blower fan 4, the evaporator core 6, and the heater core 7 are aligned in the vehicle width direction. The evaporator core 6 is installed substantially vertically, and the air filter 5 is installed on the upstream side in the ventilation direction. Further, the drive shaft of the motor 11 that gives drive force to the blower fan 4 is also arranged substantially vertically. The intake door 3 is a rotary door in this embodiment, and a rotary shaft 21 connected to a predetermined link mechanism is integrally formed. The rotary shaft 21 extends outside the casing 2.

As shown in FIGS. 1 and 3, the casing 2 is divided into two in the vehicle front-rear direction across the dividing plane A, and the first part 2 a located at the front and the second part 2 b located at the rear. It consists of. With this configuration, the intake unit 25 for intake door 3 or the like is accommodated, the scroll unit 26 to the blower fan 4 and the like are accommodated, a cooling unit portion 27 such evaporator core 6 Ru housed, the heater core 7 and the like are housed The heater unit 28 is integrally formed by one casing 2. Thereby, since the number of parts which comprise casing 2 becomes fewer than before, cost reduction is realizable.

  As shown in FIG. 4, the dividing surface A is located in the air passage 31 so as not to divide the tongue portion 30 of the scroll portion 26. Thereby, the shaping | molding operation | work by the die cutting of each parts 2a and 2b becomes easy. Moreover, as shown in FIG. 5, since the air conditioning unit 1 of the present invention is installed long in the vehicle width direction, it can be suitably mounted on a vehicle having a short bonnet and having little space in the front and rear.

  The foot outlet 20 is formed integrally with the casing 2 and is extended to the lower end portion of the evaporator core 6. This makes it easier to send the foot mode wind to the feet of the passenger seat (in the case of a right-hand drive vehicle).

  The (center) vent outlet 17 and the side vent outlet 18 are formed by dividing one outlet in the vehicle longitudinal direction. Thereby, the temperature difference of the blowing air of a center vent and a side vent can be made small.

  As described above, according to the present invention, it is possible to provide an air conditioning unit that is further reduced in cost and more convenient than conventional ones.

FIG. 1 is a perspective view of an air conditioning unit according to an embodiment of the present invention. FIG. 2 is a side sectional view showing the internal structure of the air conditioning unit. FIG. 3 is a schematic view showing the configuration of the casing. FIG. 4 is a top view showing the structure of the air conditioning unit. FIG. 5 is a schematic view showing a state in which the air conditioning unit is mounted.

DESCRIPTION OF SYMBOLS 1 Air conditioning unit 2 Casing 2a 1st part 2b 2nd part 3 Intake door 4 Blower fan 5 Air filter 6 Evaporator core 7 Heater core 8 Air mix core 9, 10 Mode switching door 15 Inside air introduction port 16 Outside air introduction port 17 Vent blowing Port 18 Side vent outlet 19 Differential outlet 20 Foot outlet 21 Rotating shaft 25 Intake unit portion 26 Scroll unit portion 27 Cooling unit portion 28 Heater unit portion 30 Tongue portion

Claims (5)

An intake unit portion having an intake door, a scroll unit portion having at least a blower fan, a cooling unit portion having an evaporator, and a heater unit portion having a heater core, an air mix door, and a mode switching door are configured from one casing. In the air conditioning unit in which the intake unit portion is provided with an inside air introduction port and an outside air introduction port, and the heater unit portion is provided with an air outlet,
Blower fan within the casing, an evaporator, a heater core is arranged in the vehicle width direction, wherein the evaporator is installed substantially vertically in the cooling unit portion and the rotation shaft of the motor of the blower fan is provided substantially vertically,
The casing constituting each unit portion has a dividing surface formed along the vehicle width direction, divided into two in the vehicle front-rear direction across the dividing surface, and is composed of a first part and a second part. In the intake unit portion, the dividing surface is provided in parallel with the axial direction of the rotation shaft of the intake door, and in the scroll unit portion in which the blower fan is accommodated, the dividing surface is a tongue of the scroll. An air conditioning unit provided so as not to divide the section . The air conditioning unit according to claim 1 , wherein at least a part of the operating means for displacing the intake door is formed integrally with the intake door. A foot duct that communicates with a part of the air outlet and guides the air to the feet of an occupant is formed integrally with the casing and extends at least to a lower end portion of the installation position of the evaporator. The air conditioning unit according to claim 1 or 2 . One of the air outlets is divided into two, and one of them is a vent outlet that guides the outlet air to the front of the occupant, and the other is a side vent outlet that guides the outlet air to both sides of the passenger compartment. The air conditioning unit according to any one of claims 1 to 3 , wherein 5. The air conditioning unit according to claim 4 , wherein one of the air outlets is formed on an upper surface of the casing and is divided into two in the vehicle front-rear direction.

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