JP2015196451A - Air conditioning device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To protect actuators 50a, 50b, 90a, 90b and power transmission mechanisms 51a, 51b, 91a, 91b from dust and sand.SOLUTION: An air conditioning unit 10 includes: a filter 40 for filtering an airflow in a heater case 21; a heat exchanger 42 for cooling for exchanging heat with the airflow which has passed through the filter 40; and a heater core 44. Actuators 50a, 50b and power transmission mechanisms 51a, 51b are arranged on an airflow downstream side with respect to the filter 40, and actuators 90a, 90b and power transmission mechanisms 91a, 91b are arranged on the airflow downstream side with respect to the filter 40.

Description

  The present invention relates to an air conditioner.

  2. Description of the Related Art Conventionally, in an air conditioning unit of a vehicle air conditioner, an air conditioning case having an air passage that circulates an air flow toward the passenger compartment, a cooling heat exchanger that cools the air flow in the air passage, and a cooling heat exchanger And a heating heat exchanger that heats the cold air from the air, and a blower is disposed downstream of the air flow of the cooling heat exchanger and the heating heat exchanger (see, for example, Patent Document 1).

  In this case, the air conditioning case is provided with a plurality of outlets that blow out the air that has passed through the cooling heat exchanger and the heating heat exchanger into the passenger compartment. Each of the plurality of air outlets is opened and closed by a corresponding mode door. The mode door is driven by an actuator for each outlet. Further, the air conditioning case is formed with bypass passages for allowing the cool air blown from the cooling heat exchanger to flow to the plurality of outlets by bypassing the heating heat exchanger. An air mix door is provided between the cooling heat exchanger and the heating heat exchanger. And an air mix door changes the ratio of the air quantity which flows into a bypass channel, and the air quantity which passes the heat exchanger for heating, and adjusts the air temperature which blows off into a vehicle interior from a some blower outlet. The air mix door is driven by an actuator.

  Moreover, in the air conditioner described in Patent Document 2, a blower is disposed on the downstream side of the air flow of the cooling heat exchanger and the heating heat exchanger, and on the plurality of outlet sides in the air conditioning case.

JP-A-8-276722 Japanese Utility Model Publication No. 50-54748

  In the air conditioners described in Patent Documents 1 and 2 above, when an actuator for driving the air mix door or the mode door and a power transmission mechanism for transmitting the drive output of the actuator to the mode door are arranged outside the air conditioning case, the interior of the actuator In some cases, dust or sand may enter the power transmission mechanism. In this case, there is a possibility that problems such as generation of abnormal noise and breakage of gears may occur.

  An object of this invention is to provide the air conditioner which protected the actuator and power transmission mechanism for driving a door from dust and dust in view of the said point.

  In order to achieve the above object, according to the first aspect of the present invention, an air conditioning case (21, 60, 70) that circulates an air flow toward a room, and a filter that is housed in the air conditioning case and filters the air flow ( 40) and heat exchangers (42, 44) for exchanging heat between the air flow that has passed through the filter, and air conditioning doors (84a, 84b, 48a, 48b) that change the state of the air flow that has passed through the filter by displacement. ), An actuator (50a, 50b, 90a, 90b) for driving and displacing the air conditioning door, and a power transmission mechanism (51a, 51b, 91a) for driving the air conditioning door by transmitting the drive output of the actuator to the air conditioning door 91b), and the actuator and the power transmission mechanism are arranged on the downstream side of the air flow with respect to the filter in the air conditioning case.

  According to the first aspect of the present invention, in the air conditioner, the actuator and the power transmission mechanism are arranged on the downstream side of the air flow with respect to the filter in the air conditioning case. For this reason, an actuator and a power transmission mechanism can be protected from dust and sand dust.

  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.

It is a figure which shows the cross-sectional structure of the vehicle air conditioner in one Embodiment of this invention. It is II-II sectional drawing in FIG. FIG. 3 is a sectional view taken along line III-III in FIG. 1. It is a figure which shows a part of structure of the vehicle air conditioner in a comparative example.

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

  FIG. 1 is a cross-sectional view of an air conditioning unit of a vehicle air conditioner according to an embodiment of the present invention. In FIG. 1, the up, down, left, and right arrows indicate directions when the vehicle air conditioner is mounted on a vehicle.

  The air conditioning unit 10 according to the present embodiment is a two-layered inside / outside air conditioning unit 10 and includes a heater unit 20 and a blower unit 30. The blower unit 30 is disposed at a substantially central portion in the left-right direction in the lower portion of the instrument panel in the passenger compartment. The heater unit 20 is disposed so as to be offset from the center portion to the passenger seat side in the lower portion of the instrument panel in the passenger compartment.

  The heater unit 20 includes a heater case 21. The heater case 21 is made of a resin molded product, such as polypropylene, which has some elasticity and is excellent in strength. The heater case 21 includes a resin wall 23 as a partition wall that partitions the upper air passage 22a and the lower air passage 22b. The upper air passage 22a and the lower air passage 22b allow the air flow introduced from the outside air introduction port 24a and the inside air introduction port 24b to flow toward the vehicle interior. The outside air introduction port 24 a and the inside air introduction port 24 b are formed in the heater case 21. The outside air introduction port 24a is formed to introduce outside air (air outside the passenger compartment) into the air passages 22a and 22b. The inside air introduction port 24b is formed to introduce inside air (vehicle compartment air) into the air passages 22a and 22b. The air passages 22a and 22b are a general term for the upper air passage 22a and the lower air passage 22b.

  The heater unit 20 includes an inside / outside air switching door 25 that opens at least one of the outside air introduction port 24a and the inside air introduction port 24b. The inside / outside air switching door 25 is driven by an actuator (not shown). Further, the heater unit 20 includes an inside / outside air guide 26. The inside / outside air guide 26 guides outside air introduced from the outside air introduction port 24a to the upper air passage 22a with the outside air introduction port 24a and the inside air introduction port 24b opened by the inside / outside air switching door 25, and from the inside air introduction port 24b. It is a guide for guiding the introduced inside air to the lower air passage 22b.

  The heater unit 20 includes a filter 40, a cooling heat exchanger 42, a heater core 44, and air mix doors 48a and 48b.

  The filter 40 is disposed in the heater case 21 so as to straddle the upper air passage 22a and the lower air passage 22b. The filter 40 filters the air flow introduced from the outside air introduction port 24a and the inside air introduction port 24b and flowing through the air passages 22a and 22b.

  The cooling heat exchanger 42 is disposed in the heater case 21 so as to straddle the upper air passage 22a and the lower air passage 22b. The cooling heat exchanger 42 is disposed on the downstream side of the air flow with respect to the filter 40. The cooling heat exchanger 42 absorbs the latent heat of evaporation of the refrigerant in the well-known refrigeration cycle from the air that has passed through the filter 40 and cools this air. That is, the cooling heat exchanger 42 cools the air flow for each air passage by heat exchange between the air flow that has passed through the filter 40 and the refrigerant, and blows out cold air.

  The heater core 44 is arranged in the heater case 21 on the downstream side of the air flow with respect to the cooling heat exchanger 42 and so as to straddle the upper air passage 22a and the lower air passage 22b. The heater core 44 heats the cold air that has passed through the upper air passage 22a with engine cooling water (hot water). The heater core 44 heats the cold air for each air passage by heat exchange between the cold air that has passed through the lower air passage 22b and the engine cooling water (hot water), and blows out the hot air.

  A bypass passage 46a is formed in the upper air passage 22a to allow the cool air from the cooling heat exchanger 42 to flow through the heater core 44 toward the passenger compartment. In the lower air passage 22b, a bypass passage 46b is formed in which the cool air from the cooling heat exchanger 42 flows through the heater core 44 toward the vehicle interior.

  The air mix door 48a is a door that is disposed in the upper air passage 22a and changes the ratio of the amount of air flowing through the heater core 44 and the amount of air flowing through the bypass passage 46a out of the amount of air blown from the cooling heat exchanger 42. The air mix door 48b is a door that is disposed in the lower air passage 22b and changes the ratio of the amount of air flowing through the heater core 44 and the amount of air flowing through the bypass passage 46b out of the amount of air blown from the cooling heat exchanger 42. . In the present embodiment, slide doors that are supported with respect to the heater case 21 so as to be slidable are provided as the air mix doors 48a and 48b.

  An actuator 50a that outputs a driving force to the air mix door 48a and a power transmission mechanism 51a that transmits the drive output of the actuator 50a to the air mix door 48a are disposed in the upper air passage 22a. The actuator 50 a and the power transmission mechanism 51 a are arranged on the downstream side of the air flow with respect to the filter 40 in the heater case 21.

  An actuator 50b that outputs a driving force to the air mix door 48b and a power transmission mechanism 51b that transmits the drive output of the actuator 50b to the air mix door 48b are disposed in the lower air passage 22b. The actuator 50 b and the power transmission mechanism 51 b are disposed on the downstream side of the air flow with respect to the filter 40 in the heater case 21.

  The actuators 50 a and 50 b and the power transmission mechanisms 51 a and 51 b are supported by the heater case 21. As the actuators 50a and 50b, electric motors such as servo motors are used.

  The power transmission mechanisms 51a and 51b of the present embodiment are configured by a plurality of gears, rotating shafts, and the like, and are link mechanisms that transmit the rotational outputs of the actuators 50a and 50b to the air mix doors 48a and 48b.

  The heater case 21 is formed with an air outlet 28a of the upper air passage 22a and an air outlet 28b of the lower air passage 22b. The air outlets 28a and 28b are disposed on the downstream side of the air flow with respect to the filter 40, the cooling heat exchanger 42, the heater core 44, and the bypass passage 46a. That is, air outlets 28 a and 28 b are provided for each air passage on the downstream side of the air flow with respect to the filter 40, the heat exchanger 42 for cooling, the heater core 44, and the bypass passage 46 a in the heater case 21.

  The blower unit 30 includes a blower case 60. The blower case 60 is made of a resin-molded product, such as polypropylene, having a certain degree of elasticity and excellent strength. The blower case 60 includes a resin wall 62 as a partition wall that partitions the upper air passage 61a and the lower air passage 61b. The blower case 60 is provided with an air inlet 63a that guides an air flow blown from the air outlet 28a of the heater case 21 into the upper air passage 61a. The blower case 60 is provided with an air inlet 63b that guides an air flow blown from the air outlet 28b of the heater case 21 into the lower air passage 61b. That is, the air inlets 63a and 63b for guiding the air flow blown from the air outlets 28a and 28b of the heater case 21 to the corresponding air passages among the air passages 61a and 61b are provided in the blower case 60 for each air passage. Is provided.

  A duct 70 is disposed between the heater case 21 and the blower case 60. The duct 70 constitutes an air conditioning case together with the heater case 21 and the blower case 60, and is made of a molded resin product having some elasticity and excellent strength, such as polypropylene. The duct 70 includes a resin wall 72 that partitions the upper air passage 71a and the lower air passage 71b. The upper air passage 71a is used to guide the air flow blown from the air outlet 28a of the heater case 21 into the upper air passage 61a. The lower air passage 71b is used to guide the air flow blown from the air outlet 28b of the heater case 21 into the lower air passage 61b.

  In the duct 70 of the present embodiment, the cross-sectional area perpendicular to the main air flow direction in the air flow flowing from the heater case 21 toward the blower case 60 is directed from the air outlets 28a, 28b to the air inlets 63a, 63b. It is formed in a tapered shape so as to be smaller.

  However, the main flow is an air flow in which the blowing amount is the largest among the plurality of air flows flowing from the heater case 21 toward the blower case 60.

  The blower unit 30 includes fans 80 a and 80 b and an actuator 82. The fan 80a is supported on one side (upper side in the drawing) of the rotation shaft 81 in the axial direction. The fan 80b is supported on the other side (lower side in the figure) of the rotating shaft 81 in the axial direction. The fan 80a is a centrifugal blower that sucks air in the upper air passage 61a from the other axial side of the rotating shaft 81 (lower side in the figure) and blows it outward in the radial direction. The fan 80b is a centrifugal blower that draws air in the lower air passage 61b from one side (upper side in the drawing) of the rotating shaft 81 and blows it outward in the radial direction.

  The rotation shaft 81 is disposed so as to penetrate the resin wall 62 and extend in the vertical direction. The blower motor 82 is an electric motor that rotationally drives the fans 80 a and 80 b via the rotation shaft 81. The blower motor 82 is disposed below the blower case 60.

  Mode doors 84 a and 84 b are disposed in the blower case 60. The mode door 84a of FIG. 2 is formed in a ring shape centering on the rotation shaft 81, and has an opening 85a. The mode door 84a is disposed radially outside the rotation shaft 81 with respect to the fan 80a. The mode door 84 a of the present embodiment is a rotary door that is supported so as to be rotatable about the rotation shaft 81 with respect to the blower case 60.

  A face blowout opening 64a and a defroster blowout opening 64b are formed on the blower case 60 on the radially outer side centering on the rotation shaft 81 with respect to the fan 80a. For this reason, when the opening 85a of the mode door 84a communicates with one of the face blowing opening 64a and the defroster blowing opening 64b, the air from the fan 80a is blown from the communicating blowing opening. can do.

  For example, when the opening 85a of the mode door 84a communicates with the face blowing opening 64a, the air flow blown from the fan 80a is directed from the face blowing opening 64a to the upper body of the passenger in the vehicle cabin through the FACE duct and the face blowing outlet. Air can be blown. When the opening 85a of the mode door 84a communicates with the defroster blowing opening 64b, the air flow blown from the fan 80a is directed from the defroster blowing opening 64b to the inner surface of the windshield in the vehicle interior through the DEF duct and the defroster blowing outlet. Can blow air.

  The mode door 84b of FIG. 3 is formed in a ring shape centering on the rotation shaft 81 and has an opening 85b. The mode door 84b is disposed radially outside the rotation shaft 81 with respect to the fan 80b. The mode door 84b of the present embodiment is a rotary door that is supported so as to be rotatable about the rotation shaft 81 with respect to the blower case 60.

  In the blower case 60, a foot outlet opening 64c is formed on the radially outer side centering on the rotation shaft 81 with respect to the fan 80b. Therefore, when the opening 85b of the mode door 84a communicates with the foot blowing opening 64c, the air flow blown from the fan 80b is passed from the foot blowing opening 64c to the occupant's lower body through the FOOT duct and the foot blowing outlet. Air will be blown toward it.

  In the blower case 60, an actuator 90a that outputs a driving force to the mode door 84a and a power transmission mechanism 91a that transmits the driving output of the actuator 90a to the mode door 84a are arranged. The actuator 90a is controlled by an electronic control device.

  In the blower case 60, an actuator 90b that outputs a driving force to the mode door 84b and a power transmission mechanism 91b that transmits the driving output of the actuator 90b to the mode door 84b are arranged. The actuator 90b is controlled by an electronic control device.

  Here, the actuators 90a and 90b are disposed on the downstream side of the air flow with respect to the filter 40, and are located at the boundary between the upper air passage 61a and the lower air passage 61b. That is, the actuators 90 a and 90 b together with the resin wall 62 constitute a partition wall between the upper air passage 61 a and the lower air passage 61 b.

  The actuators 90a and 90b and the power transmission mechanisms 91a and 91b are supported by the blower case 60. An electric motor such as a servo motor is used as the actuators 90a and 90b.

  The power transmission mechanisms 91a and 91b of the present embodiment are configured by a plurality of gears, rotating shafts, and the like, and are link mechanisms that transmit the rotational outputs of the actuators 90a and 90b to the mode doors 84a and 84b.

  Next, an inside / outside air two-layer mode will be described as an example of the operation of the air conditioning unit 10 of the present embodiment.

  First, the actuator 90a rotates the mode door 84a by outputting the drive output to the mode door 84a through the power transmission mechanism 91a. Thereby, the opening part 85a of the mode door 84a is connected to the defroster blowing opening part 64b.

  The actuator 90b rotates the mode door 84b by outputting the drive output to the mode door 84b through the power transmission mechanism 91b. Thereby, the opening part 85a of the mode door 84a is connected to the foot blowing opening part 64c.

  Further, an actuator (not shown) brings the inside / outside air switching door 25 into a state where the outside air introduction port 24a and the inside air introduction port 24b are opened. Then, the actuator 82 rotates the fans 80 a and 80 b through the rotation shaft 81. For this reason, in the heater case 21, the airflow which flows toward the vehicle interior from the inlets 24a and 24b side generate | occur | produces.

  Accordingly, the outside air introduced from the outside air introduction port 24a is guided to the upper air passage 22a by the inside / outside air switching door 25 and the inside / outside air guide 26. The guided outside air passes through the filter 40 and then flows to the cooling heat exchanger 42. Thus, cold air is blown out from the cooling heat exchanger 42 in the upper air passage 22a.

  Here, a part of the cold air blown out from the cooling heat exchanger 42 flows to the heater core 44. Along with this, warm air is blown out from the heater core 44. On the other hand, of the cold air blown out from the cooling heat exchanger 42, the remaining cold air other than the cold air flowing through the heater core 44 flows into the bypass passage 46a. Accordingly, the warm air blown from the heater core 44 and the cold air that has passed through the bypass passage 46a are mixed and blown from the air outlet 28a of the upper air passage 22a to the upper air passage 71a of the duct 70.

  At this time, the air mix door 48a changes the ratio of the amount of air flowing through the heater core 44 and the amount of air flowing through the bypass passage 46a out of the amount of air blown out from the cooling heat exchanger 42, whereby the air blown out from the air outlet 28a. The temperature can be adjusted.

  The air flow thus adjusted in temperature passes through the upper air passage 71 a of the duct 70 and then flows into the upper air passage 61 a of the blower case 60. Accordingly, this air flow is sucked from the other side in the axial direction with respect to the fan 80a. Accordingly, the fan 80a blows out the sucked air outward in the radial direction. For this reason, the air blown out from the fan 80a is blown from the opening 85a of the mode door 84a toward the inner surface of the windshield in the vehicle compartment through the defroster blowout opening 64b, the DEF duct and the defroster blowout.

  On the other hand, the inside air is guided from the inside air introduction port 24b into the lower air passage 22b by the inside / outside air switching door 25 and the inside / outside air guide 26. The inside air flows through the filter 40 and then flows into the cooling heat exchanger 42. Thus, cold air is blown out from the cooling heat exchanger 42 in the lower air passage 22b.

  Here, a part of the cold air blown out from the cooling heat exchanger 42 flows to the heater core 44. Along with this, warm air is blown out from the heater core 44. On the other hand, the remaining cold air other than the cold air flowing through the heater core 44 out of the cold air blown out from the cooling heat exchanger 42 flows into the bypass passage 46b. Accordingly, the warm air blown from the heater core 44 and the cold air that has passed through the bypass passage 46b are mixed and blown from the air outlet 28b of the lower air passage 22b to the lower air passage 71b of the duct 70.

  At this time, the air mix door 48b changes the ratio of the amount of air flowing through the heater core 44 to the amount of air flowing through the bypass passage 46b out of the amount of air blown out from the cooling heat exchanger 42, whereby the air blown out from the air outlet 28b. The temperature can be adjusted.

  The air flow thus adjusted in temperature passes through the lower air passage 71b of the duct 70 and then flows into the lower air passage 61b of the blower case 60. Accordingly, this air flow is sucked from one side in the axial direction with respect to the fan 80b. Therefore, the fan 80b blows out the sucked air outward in the radial direction. Therefore, the air flow blown out from the fan 80b is blown from the opening 85b of the mode door 84b toward the passenger's lower body in the passenger compartment through the foot blowing opening 64c, the FOOT duct, and the foot blowing outlet. Become.

  According to this embodiment described above, the air conditioning unit 10 generates heat between the heater case 21, the blower case 60, the filter 40 that filters the air flow in the heater case 21, and the air flow that has passed through the filter 40. A cooling heat exchanger 42 and a heater core 44 to be replaced are provided. The mode doors 84a and 84b and the air mix doors 48a and 48b are air conditioning doors that change the state of the airflow that has passed through the filter 40 by displacement. Specifically, the air mix doors 48a and 48b are air conditioning doors that adjust the temperature of the air blown out from the air outlets 28a and 28b by the respective displacements. The mode doors 84a and 84b are air conditioning doors that perform air flow from the blowing openings 64a, 64b, and 64c and stop the blowing by rotation. The actuators 50a, 50b, 90a, 90b output drive outputs to the mode doors 84a, 84b and the air mix doors 48a, 48b, respectively. The power transmission mechanisms 51a, 51b, 91a, 91b transmit drive output from the actuators 50a, 50b, 90a, 90b to the corresponding doors among the mode doors 84a, 84b and the air mix doors 48a, 48b. Here, the actuators 50 a, 50 b, 90 a, 90 b and the power transmission mechanisms 51 a, 51 b, 91 a, 91 b are arranged on the downstream side of the air flow with respect to the filter 40. Thus, the actuators 50a, 50b, 90a, 90b and the power transmission mechanisms 51a, 51b, 91a, 91b can be protected from dust and sand dust.

In the present embodiment, the actuators 90a and 90b are disposed at the boundary between the upper air passage 61a and the lower air passage 61b. For this reason, the following effects (1) and (2) can be obtained.
(1) As shown in FIG. 4, since the distance between the actuator 90b and the mode door 84b is smaller than when the actuators 90a and 90b are arranged above the blower case 60, the actuator 90b to the mode door 84b In contrast, the torsional loss when transmitting the driving force is reduced, and the operating force can be reduced.
(2) Since the actuators 90a and 90b are not mounted in the assumed mounting range of the FACE duct, the FOOT duct, and the DEF duct, it becomes easy to route each duct.

  In the present embodiment, the power transmission mechanisms 51 a and 51 b are arranged in the heater case 21. Power transmission mechanisms 91 a and 91 b are arranged in the blower case 60. For this reason, even if a part of the mechanism members of the power transmission mechanisms 51a, 51b, 91a, 91b drop off, they do not interfere with parts other than the air conditioner, so that no malfunction occurs.

  In the present embodiment, the actuators 50 a and 50 b and the power transmission mechanisms 51 a and 51 b are arranged in the heater case 21. Therefore, it is possible to prevent the heater case 21 from transmitting the noise generated from the actuators 50a and 50b and the power transmission mechanisms 51a and 51b to the vehicle interior.

  In the present embodiment, actuators 90 a and 90 b and power transmission mechanisms 91 a and 91 b are arranged in the blower case 60. Therefore, it is possible to prevent the blower case 60 from transmitting noise generated from the actuators 90a and 90b and the power transmission mechanisms 91a and 91b to the vehicle interior.

  As described above, the transmission rate of noise transmitted to the passenger compartment is reduced by the heater case 21 and the blower case 60, and the operating sounds of the actuators 50a, 50b, 90a, 90b and the power transmission mechanisms 51a, 51b, 91a, 91b are It can be made difficult to leak into the room.

  In the present embodiment, the actuators 90 a and 90 b are disposed in the blower case 60. On the other hand, as shown in FIG. 4, when the actuators 90 a and 90 b are arranged outside the blower case 60, the overall size of the blower unit 30 is increased.

  On the other hand, when the actuators 90a and 90b are arranged outside the blower case 60 with the overall vertical dimension L1 of the blower unit 30 kept constant, as shown in FIG. 4, the vertical dimension L2 ′ of the air inlets 63a and 63b. Becomes smaller. For this reason, the opening area of air inlet 63a, 63b becomes small. For this reason, the gradient angle θ (see FIG. 1) of the duct 70 is increased. The gradient angle θ is an angle that the duct 70 makes clockwise with respect to the horizontal direction. For this reason, the pressure loss which arises when an airflow passes through the duct 70 increases. FIG. 4 shows a blower unit 30 and a duct 70 as a comparative example in which the actuators 90 a and 90 b are arranged on the upper side of the blower case 60.

  On the other hand, in the blower unit 30 of the present embodiment, the actuators 90a and 90b are arranged inside the blower case 60 with the vertical dimension L1 being the same as the vertical dimension L1 of the blower unit 30 in FIG. . Therefore, the vertical dimension L2 (> L2 ') of the air inlets 63a and 63b can be increased as compared with the comparative example of FIG. For this reason, the opening area of air inlet 63a, 63b can be enlarged. Therefore, the gradient angle θ of the duct 70 is reduced. Thereby, the pressure loss of the airflow that occurs when the airflow passes through the duct 70 can be reduced.

(Other embodiments)
In the above embodiment, the example in which the actuator of the present invention is an electric motor and the air conditioning door of the present invention is driven by this electric motor has been described, but instead, in conjunction with the manual operation of the user's operation switch. The air conditioning door may be driven. The air conditioning doors are air mix doors 48a and 48b and mode doors 84a and 84b. That is, the air mix doors 48a and 48b and the mode doors 84a and 84b may be driven in conjunction with a user's manual operation on the operation switch.

  In this case, a configuration is required in which the operating force of the user manually operating the operation switch is transmitted to the air conditioning door side to drive the air conditioning door. For this reason, a mechanism such as a belt or a wire is used instead of the electric motor as a mechanism for transmitting the operation force applied to the operation switch by the user to the air conditioning door when the user manually operates the operation switch. A mechanism such as a belt or a wire is disposed between the air conditioning door and the power transmission mechanism (51a, 51b, 91a, 91b). Therefore, when the user manually operates the operation switch, the operation force from the operation switch is transmitted in the order of the operation switch → “mechanism such as belt or wire” → power transmission mechanism → air conditioning door, and the air conditioning door is driven. Will be.

  In such a configuration, a mechanism disposed on the operation switch side such as a belt or a wire is the actuator of the present invention. On the other hand, the power transmission mechanism (51a, 51b, 91a, 91b) arranged on the air conditioning door side is the power transmission mechanism of the present invention. In this case, the actuator and the power transmission mechanism may be configured as one mechanism.

  In the above embodiment, an example in which the air conditioner of the present invention is a vehicle air conditioner has been described, but instead of this, an installation type air conditioner other than the vehicle air conditioner (for example, an air conditioner for an office or a house) ) May be the air conditioner of the present invention. Furthermore, when carrying out the present invention, the air conditioner of the present invention may be an air conditioner for various moving bodies such as trains and airplanes other than the vehicle air conditioner.

  In the above embodiment, the air conditioning unit 10 has been described as an example in which the first air passages (22a, 71a, 61a) and the second air passages (22b, 71b, 61b) are arranged in the vertical direction (top and bottom direction). Instead of the air conditioning unit 10, the first air passages (22a, 71a, 61a) and the second air passages (22b, 71b, 61b) may be arranged in the vehicle front-rear direction.

  That is, one of the first and second air passages is disposed on the front side in the vehicle traveling direction with respect to the other air passage.

  In the above embodiment, the example using the inside / outside air two-layer type air conditioning unit has been described, but instead of this, as the air conditioning unit 10 of the present invention, the following (a), (b) may be used. .

(A)
A left and right independent control type air conditioning unit is used as the air conditioning unit 10 of the present invention. That is, one of the first and second air passages is an air passage that blows an air flow toward the passenger compartment side of the vehicle interior, and the other air passage is an air passage that blows an air flow toward the passenger seat side of the vehicle interior. .

(B)
As the air conditioning unit 10 of the present invention, instead of forming a partition wall and first and second air passages, one having one air passage may be used. That is, the air conditioning unit 10 of the present invention may be one in which the resin walls 23, 72, 62 are not formed in the heater case 21, the duct 70, and the blower case 60.

  In the above embodiment, an example in which a slide door is employed as the air mix doors 48a and 48b and a rotary door is employed as the mode doors 84a and 84b has been described. However, the present invention is not limited thereto, and the air mix doors 48a and 48b and mode doors are used. Various doors may be used as 84a and 84b.

  In the above-described embodiment, the example in which the cooling heat exchanger 42 and the heater core 44 are used as the heat exchanger of the present invention has been described. Instead, either one of the cooling heat exchanger 42 and the heater core 44 is used. May be used as the heat exchanger of the present invention.

  In the above-described embodiment, the mode door 84a, the face blowing opening 64a, and the defroster blowing opening 64b are described on the radially outer side with respect to the fan 80a. You may arrange | position the mode door 84a, the face blowing opening part 64a, and the defroster blowing opening part 64b in locations other than a direction outer side.

  In the above-described embodiment, the example in which the mode door 84b and the foot outlet opening 64c are disposed on the radially outer side with respect to the fan 80b has been described. The mode door 84b and the foot outlet opening 64c may be disposed.

  In addition, this invention is not limited to above-described embodiment, In the range described in the claim, it can change suitably. Further, the above embodiments are not irrelevant to each other, and can be combined as appropriate unless the combination is clearly impossible. In each of the above-described embodiments, it is needless to say that elements constituting the embodiment are not necessarily essential unless explicitly stated as essential and clearly considered essential in principle. Yes.

  Next, a comparison between the claims of the present invention and the configuration of the above embodiment will be described.

  That is, the air-conditioning case constitutes the heater case 21, the duct 70, and the blower case 60, and the “air-conditioning door that changes the state of the airflow that has passed through the filter by displacement” includes the air mix doors 48a and 48b and the mode doors 84a and 84b. It corresponds to. “Actuator for driving and displacing the air-conditioning door” corresponds to the actuators 50a, 50b, 90a, and 90b. The “power transmission mechanism that transmits the actuator output to the air-conditioning door to drive the air-conditioning door” corresponds to the power transmission mechanisms 51a, 51b, 91a, and 91b. The first and second air passages correspond to the upper air passage 61a and the lower air passage 61b. The first and second fans correspond to the fans 80a and 80b. The 1st blowing opening part respond | corresponds to the face blowing opening part 64a and the defroster blowing opening part 64b. The 2nd blowing opening part respond | corresponds to the foot blowing opening part 64c. The heat exchanger case corresponds to the heater case 21.

10 Air conditioning unit,
20 Heater unit 21 Heater case 22a, 61a Upper air passage 22b, 61b Lower air passage 23, 62, 72 Resin wall 30 Blower unit 40 Filter 42 Cooling heat exchanger 44 Heater core 48a, 48b Air mix door 50a, 50b, 90a , 90b Actuator 51a, 51b, 91a, 91b Power transmission mechanism 60 Blower case 70 Duct 80a, 80b Fan

Claims (8)

An air conditioning case (21, 60, 70) that circulates an air flow toward the room;
A filter (40) housed in the air conditioning case to filter the air flow;
A heat exchanger (42, 44) for exchanging heat with the airflow that has passed through the filter;
Air-conditioning doors (84a, 84b, 46a, 46b) that change the state of the airflow that has passed through the filter by displacement;
An actuator (50a, 50b, 90a, 90b) for driving and displacing the air conditioning door;
A power transmission mechanism (51a, 51b, 91a, 91b) for transmitting the drive output of the actuator to the air conditioning door to drive the air conditioning door;
The air conditioner characterized in that the actuator and the power transmission mechanism are arranged on the downstream side of the air flow with respect to the filter in the air conditioning case. The air conditioning case is provided with first and second air passages (61a, 61b) for circulating the airflow toward the room,
The first and second air passages are partitioned by a partition wall;
The air conditioner according to claim 1, wherein the actuator constitutes the partition wall. The rotary shaft (81) is supported on one end side in the axial direction, and the air passing through the heat exchanger and the filter in the first air passage is rotated in the radial direction of the rotary shaft as the rotary shaft rotates. A first fan (80a) that blows outward;
The second air passage is supported on the other axial end of the rotating shaft, and the air that has passed through the heat exchanger and the filter in the second air passage is blown outward in the radial direction as the rotating shaft rotates. 2 fans (80b)
The air conditioner according to claim 2, comprising:   The air conditioner according to claim 3, wherein the rotation shaft is arranged to extend in a vertical direction. First blowing openings (64a, 64b) for blowing the air blown from the first fan into the room;
A second blowing opening (64c) for blowing the air blown from the second fan into the room;
First and second air-conditioning doors that open and close the first and second blow-off openings in order to carry out the blowing of the air from the first and second blow-off openings and stop of the blow-off. The mode door (84a, 84b) is provided, The air conditioner of Claim 3 or 4 characterized by the above-mentioned. The first blowout opening and the first mode door are disposed on the radially outer side with respect to the first fan,
The air conditioner according to claim 5, wherein the second blowout opening and the second mode door are disposed on the radially outer side with respect to the second fan. The air conditioning case is
A heat exchanger having first and second air outlets (28a, 28b) that houses the filter and the heat exchanger and blows out the air flow that has passed through the filter and the heat exchanger for each air passage. Case (21);
The first and second air outlets are formed, and the first and second fans, the rotary shaft, the actuator, and the power transmission mechanism are accommodated, and the first and second air outlets are accommodated. A blower case (60) having first and second air inlets (63a, 63b) through which an air flow blown out from each air passage is guided;
Ducts (70) for guiding the air flow blown from the first and second air outlets of the heat exchanger case to the corresponding air inlets among the first and second air inlets of the blower case; With
In the duct, an area of a cross section orthogonal to a mainstream flow direction in an air flow blown from the heat exchanger case to the blower case decreases from the heat exchanger case side to the blower case side. The air conditioner according to claim 5 or 6, wherein the air conditioner is formed as described above. A heating heat exchanger (44) as the heat exchanger for heating the air stream filtered by the filter by heat exchange;
A bypass passage (46a, 46b) for bypassing the heating heat exchanger and flowing the air flow filtered by the filter out of the air conditioning case into the room, the air conditioning door is displaced By changing the ratio of the amount of air passing through the heating heat exchanger and the amount of air passing through the bypass passage out of the amount of air filtered by the filter, the temperature of the air flowing toward the room is changed. The air conditioner according to any one of claims 1 to 7, wherein the air conditioner is an air mix door (48a, 48b).

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