JP2003072359A - Air conditioner for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently discharge condensed water in a structure of a drain part discharging the condensed water in an air conditioner unit 4 in an air conditioner 1 allowing air guided in the air conditioner unit 4 to pass through an evaporator 33 and a heater core 34 installed in the unit 4. SOLUTION: The air conditioner unit 4 is provided with a drain port 80 in its bottom wall part, the drain port 80 is integrally formed with a drain passage 81, and the drain passage 81 is extended laterally (car body width direction) to the air conditioner unit 4 and projected from the side of the air conditioner unit 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle air conditioner, and more particularly to the technical field of a drain structure provided in an air conditioning unit.

[0002]

2. Description of the Related Art Conventionally, as a vehicle air conditioner of this type, for example, Japanese Unexamined Patent Publication No. 2000-25447 and Japanese Unexamined Patent Publication No.
As disclosed in Japanese Patent Publication No. 001-39144, an air conditioning unit that accommodates two heat exchangers for cooling and heating, and a blower unit that blows air to the air conditioning unit,
It is known that they are arranged in a substantially central portion in the vehicle width direction and a passenger seat in the instrument panel.
The air conditioning unit is provided with an air introduction unit from the blower unit on the lower end side thereof, and the air introduced from the air introduction unit is arranged vertically above the air introduction unit in a substantially horizontal direction. It passes through the cooling and heating heat exchangers that are arranged, and is led out to the vehicle interior through a duct that is connected above the heat exchangers. In this structure, the two heat exchangers are arranged side by side vertically to downsize the air conditioning unit and reduce the mounting space.

[0003]

By the way, in the air conditioner of the conventional example, the drain port for draining the condensed water generated in the air conditioner unit is opened in the bottom surface of the air conditioner unit. Then, in general, a drain pipe made of rubber is connected to the drain port so as to be inserted into an opening of the vehicle body for draining. Therefore, it is necessary to assemble man-hours for connecting the rubber drain pipe, and it is also a problem to maintain good sealing property between the drain port and the rubber pipe.

In addition, when a large amount of condensed water is generated compared with the amount discharged from the drain port, the condensed water is stored on the bottom surface. The condensed water reduces the cross-sectional area of the air introduction passage, which becomes a resistance to the air flow, and a part of the stored condensed water is wound up toward the cooling heater by the air flow, which causes a problem that the water is not drained.

Therefore, for example, Japanese Patent Laid-Open No. 2000-25
In Japanese Patent No. 447, a protrusion is provided in front of the drain port to prevent the air flow sent from the blower unit to the cooling heat exchanger of the air conditioning unit from directly hitting the drain port.
However, if you do this, turbulence will occur in the air flow,
The resistance of the air flow increases and the heat exchange efficiency is not good.

Further, as in Japanese Patent Laid-Open No. 2000-255251, there is disclosed a device in which a drain pipe is integrally formed in the lower front portion of an air conditioning unit and the drain pipe is directly inserted into the opening of the dash panel. According to this publication, it is not necessary to connect a rubber pipe to the drain port, and the assemblability is improved. However, it is necessary to match the position where the drain port is provided and the position where the opening of the dash panel is formed, which limits the degree of freedom in setting the position. That is, the position of the drain port is determined by the position of the opening of the dash panel. In this publication, the drain port is provided on the driver seat side end of the air conditioner, that is, on the side far from the blower unit. It cannot be moved to any other position, which limits the degree of freedom in design.

Moreover, since the drain passage is formed by directly extending from the lower end of the air conditioning unit to form the drain passage, the inclined drain passage is provided at the position where the ventilation air from the blower unit directly abuts. Condensed water is not discharged through the drain passage, is guided by the air flow and is rolled up, and a problem of not being discharged occurs.

In addition, when a large amount of condensed water is generated compared with the amount discharged from the drain port, the condensed water is stored in the drain passage. In this publication, the inclined drain passage has a function of storing a part of the condensed water, but a large drain passage volume is required to fully exhibit the function. For that purpose, it is necessary to increase the distance between the air conditioning unit and the dash panel to increase the drain passage volume.However, if this is done, the air conditioning unit will move away from the dash panel, and the air conditioning unit will tend to protrude into the passenger compartment. It becomes a factor to narrow the room.

The present invention has been made in view of the above points, and an object of the present invention is to dispose a heat exchanger for cooling and a heat exchanger for heating in an air conditioning unit and to provide a passenger seat side of the air conditioning unit. In a vehicle air conditioner configured to send air from the arranged air blowing unit to the air conditioning unit,
It is intended to improve the performance of the air conditioner by devising the drainage structure of the condensed water of the air conditioning unit.

[0010]

In order to achieve the above-mentioned object, in the solution means of the present invention, a drain port is provided in the bottom wall of the air conditioning unit, and a drain passage is formed integrally with the drain port, and the drain port is formed. It is characterized in that the passage is provided so as to extend in the lateral direction (vehicle width direction) of the air conditioning unit and is provided so as to project from the side of the air conditioning unit.

Specifically, according to the first aspect of the invention, an air conditioning unit disposed substantially in the center of the vehicle instrument panel in the vehicle width direction, and a blower disposed on the passenger seat side of the air conditioning unit. A unit, an intermediate duct for sending air from the blower unit to the air conditioning unit, and a cooling heat exchanger and a heating heat exchanger arranged in the air conditioning unit, and the intermediate duct to the air conditioning unit The introduced air,
It is premised on an air conditioning system for a vehicle that passes through a cooling heat exchanger and a heating heat exchanger installed in the air conditioning unit to produce conditioned air. A drain port is provided on the bottom wall of the air conditioning unit, and a drain passage integrally connected to the drain port is provided so as to project and extend to the side of the air conditioning unit, and a drain is provided at the outlet of the drain passage. A pipe is connected and the drain pipe is provided so as to extend toward the engine room.

According to this structure, the drain passage is provided so as to project laterally from the projection plane when the air conditioning unit is viewed from above and below, and the drain pipe is connected to the outlet portion of the drain passage. The opening position of the side dash panel and the position of the drain port do not have to match in the longitudinal direction of the vehicle body, and the positional relationship between the two can be set freely by changing the length of the drain passage, and there is a large degree of freedom in design. .

Further, since the drain passage can form the condensed water storage space, the condensed water stored in the bottom wall can be reduced,
Condensed water can be almost prevented from being entrained by the air flow guided to the cooling heat exchanger.

According to a second aspect of the present invention, an air conditioning unit is provided in the vehicle instrument panel at a substantially central portion in the vehicle width direction, a blower unit is provided on the passenger side of the air conditioning unit, and the blower is provided. An air-conditioning unit for feeding air from the unit to the air-conditioning unit; It is premised on a vehicle air conditioner that passes conditioned air through a heat exchanger. A drain port is provided on the bottom wall of the air conditioning unit, and a drain passage integrally connected to the drain port is provided so as to project and extend to the side of the air conditioning unit. Is connected to the drain pipe, and the drain pipe is provided so as to extend toward the engine room.

With this configuration, as in the first aspect of the invention,
The degree of freedom in designing the drain port and the opening position of the dash panel can be significantly improved, and condensed water can be stored in the drain passage to prevent the condensed water from being rolled up.

According to a third aspect of the present invention, in the first or second aspect, the drain port is arranged on the bottom wall of the air conditioning unit on the passenger seat side and on the front side of the vehicle body, and the drain passage is on the passenger seat of the air conditioning unit. It is configured so as to project from the air conditioning unit on the side, and the drain port is opened at a position that is not easily affected by the air flow sent from the intermediate duct to the air conditioning unit. Since the condensed water is guided to the outside of the projection surface of the unit, it is possible to prevent the condensed water from being caught in the cooling heat exchanger.

According to a fourth aspect of the present invention, in the third aspect, the bottom wall portion of the air conditioning unit has the lowest drain port and the highest diagonal portion, and an inclined surface is formed from here to the drain port. Since it is formed and is provided so as to be inclined downward from the drain port toward the outlet of the drain passage, the condensed water is quickly collected in the drain port and guided to the outlet of the drain passage.

According to a fifth aspect of the present invention, in any one of the first to fourth aspects, the intermediate duct is connected to the blower unit, and the inclined duct is inclined obliquely downward from the blower unit toward the air conditioning unit, and the inclined duct. And a horizontal duct that is connected to the air conditioning unit and forms a substantially horizontal air passage, so that the main flow of air sent from the intermediate duct to the air conditioning unit is converted from a diagonally lower direction to a substantially horizontal direction, and the bottom surface of the air conditioning unit The direction toward the portion is reduced, and it is possible to prevent the condensed water from collecting at the drain port.

According to a sixth aspect of the present invention, in the fifth aspect, the bottom wall portion of the air conditioning unit has the lowest drain port and the highest diagonal portion, and a slope is formed from here to the drain port. It has a flat part in the middle of the bottom part, is inclined downward from the drain port to the outlet part of the drain passage, and the air flow is directly on the inclined bottom wall part. Since it is changed from the direction in which it goes, the condensed water is guided to the drain passage from the drain port without being brought into the cooling heat exchanger, and is quickly discharged from the outlet part.

According to a seventh aspect of the present invention, in any one of the fourth to sixth aspects, the bottom wall portion of the air conditioning unit is located in front of the plane portion and is parallel to the flow direction of the air introduced from the intermediate duct at a position in front of the vehicle body. Since the ribs are provided upright in the direction, it is possible to prevent condensed water that collects at the drain port from being taken into the cooling heat exchanger by the air flow sent to the air conditioning unit.

According to an eighth aspect of the present invention, in any one of the fourth to seventh aspects, the heat exchanger for heating and the heat exchanger for cooling are arranged substantially vertically in the air conditioning unit, and the heat for cooling below is arranged. The lower part of the exchanger is provided with an introduction part for introducing air from the intermediate duct, and the bottom wall part of the air conditioning unit is provided under the introduction part, and the cooling heat exchanger is directed downward from the rear of the vehicle body toward the front. It is arranged so as to be inclined, and the cross-sectional shape of the connecting portion between the intermediate duct and the introduction portion is formed into a substantially triangular shape. In this configuration, since the drain port is provided at the narrower tip of the substantially triangular cross section and on the side of the blower unit and lower than the inlet, it is hardly affected by the air flow sent to the air conditioning unit. Condensed water can be discharged with.

According to a ninth aspect of the present invention, in the eighth aspect, the intermediate duct is connected to the blower unit, and the inclined duct is inclined downward from the blower unit toward the air conditioning unit, the inclined duct and the air conditioning unit. A horizontal duct that is connected to and forms a substantially horizontal air passage,
Since the connecting portion of the inclined duct on the side of the blower unit is formed in a rectangular shape in cross section and the connecting portion on the side of the horizontal duct is formed in a substantially triangular shape in cross section, it is sent from the blower unit to the air conditioning unit in the intermediate duct. Since the air flow smoothly changes its direction and there is almost no turbulence, the heat exchange efficiency can be improved.

According to a tenth aspect of the present invention, in any one of the first to ninth aspects, a dash panel is provided on the front side of the vehicle body of the air conditioning unit to form a partition from the engine side, and the mounting portion for mounting the air conditioning unit on the dash panel. , Is integrally provided at the outlet of the drain passage,
The sealability between the drain pipe and the dash panel when the drain pipe is assembled to the dash panel is improved.

The invention of claim 11 relates to claims 1 to 10.
In any one of the above, the air conditioning unit includes a temperature adjustment damper that adjusts the temperature of the conditioned air by changing the ratio of the air that passes through the heating heat exchanger among the introduced air, and the blowing direction of the conditioned air. A blow-out direction switching damper for switching is provided, and a drive mechanism and an actuator for driving the temperature control damper and the blow-out direction switching damper are provided on a side wall portion of the air conditioning unit on the blower unit side. According to this configuration, the air from the blower unit smoothly flows through the intermediate duct, is introduced to the lower side of the air conditioning unit, and turns upward from there, so that the cooling heat exchanger or the heating heat exchanger is changed. pass. At this time, the temperature control damper is driven by the actuator via the drive mechanism, and the ratio of the air passing through the heating heat exchanger to the air passing through the cooling heat exchanger is changed, whereby the harmony is improved. The temperature of the air is adjusted. The conditioned air generated in this manner is supplied to a desired location in the vehicle compartment with the blowing direction switched by a blowing direction switching damper driven by an actuator and a drive mechanism different from the temperature control damper.

Here, the respective drive mechanisms and actuators of the two dampers are both arranged on the wall portion of the air conditioning unit on the side of the air blowing unit, and are separated by the amount of the intermediate duct from the air blowing unit and the air conditioning unit. Since they are collectively arranged in the dead space between and, it is possible to further reduce the size of the air conditioner and reduce the mounting space. Further, by arranging the two actuators together as described above, the man-hours for assembling the air-conditioning unit and the man-hours for assembling the air-conditioning unit to the vehicle body can be reduced.

The twelfth aspect of the present invention includes the first to eleventh aspects.
In any one of the above, the blower unit is provided with an inside / outside air switching damper for adjusting the amount of air taken in from outside the vehicle compartment and inside the vehicle compartment, and an actuator for driving the inside / outside air switching damper is an air conditioning unit of the blower unit. It is arranged on the side wall. As a result, the actuator of the inside / outside air switching damper of the blower unit is arranged on the wall portion of the blower unit on the side of the air conditioning unit, that is, in the dead space between both units like the drive mechanism and actuator of the air conditioning unit. As a result, it is possible to further reduce the size of the air conditioner and reduce the number of unit assembling steps and the number of assembly steps to the vehicle body.

The invention of claim 13 is based on claims 1 to 12.
In any one of the above, the air conditioning unit is composed of an upper casing and a lower casing that are divided into upper and lower parts, and the upper casing is divided into two parts on the left and right sides, and the cooling heat exchanger and the heating heat exchanger are divided into two parts. The configuration is such that it is sandwiched and held by the casing. With this configuration, the cooling heat exchanger and the heating heat exchanger can be easily assembled and securely held. In addition, since the lower casing does not have the vertical dividing surface, there is no risk of the condensed water leaking, and the condensed water is reliably discharged from the drain port.

According to a fourteenth aspect of the present invention, in the thirteenth aspect, a dash panel that constitutes a partition from the engine room is provided on the front side of the vehicle body of the air conditioning unit, and the drain port is on the blower unit side of the lower casing and on the front side of the vehicle body. The drain passage extends in a direction substantially parallel to the dash panel from the drain port toward the blower unit.
The drain pipe is installed so as to project from the air conditioning unit, the drain pipe is connected to the outlet of the drain passage, the drain pipe extends in the direction orthogonal to the dash panel, and is inserted into the opening hole of the dash panel, and the drain passage is integrated with the lower casing. And a lid portion of the long groove portion integrally formed with the upper casing.

In this structure, the drain passage is not formed as a hollow body but is formed as a long groove portion in the lower casing, and the upper surface thereof is covered with another member, so that the drain passage can be formed integrally with the lower casing. ,that time,
The long groove can be easily formed even if the depth dimension or the length dimension is slightly long, and the drain passage has flexibility in shape and size. Shape can be set.

The invention of claim 15 is based on claims 1 to 14.
In any one of the above, the cooling heat exchanger housed in the air conditioning unit is provided so as to be inclined downward in the front of the vehicle body, and the cross-sectional shape of the connecting portion between the introduction portion and the intermediate duct, which is provided below the cooling heat exchanger, Is formed in a substantially triangular shape with the front side of the vehicle body being tapered, and the air outlet of the blower unit is provided at the rear side position in the vehicle front-rear direction, and the high-speed airflow from the blower unit is opened through the intermediate duct to the opening width of the connecting portion. Is guided to the introduction portion through the rear side of the large vehicle body.

In this configuration, the high-speed air flow from the blower unit is guided to the lower part of the cooling heat exchanger from the side having a large passage area, while the drain port is provided on the side having a slow air flow velocity, so that the air flow is reduced. Is smoothly guided to the cooling heat exchanger, and the condensed water is efficiently discharged without being affected by the air flow.

[0032]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show the outer appearance of an air conditioner 1 according to an embodiment of the present invention. As shown in FIG. 4, this air conditioner is an instrument panel arranged in a passenger compartment of an automobile. It is housed inside 2. This vehicle is a so-called right-hand drive vehicle in which a driver's seat and a passenger seat are provided on the right and left sides of the vehicle body, respectively.
Further, the front engine room and the front side of the vehicle compartment are separated by a dash panel P (only shown in FIG. 6). In this specification, the vehicle body front side and the vehicle body rear side of the air conditioner 1 are also simply referred to as the front side and the rear side, respectively.

As shown in FIG. 3, the air conditioner 1 includes a blower unit 3 and an air conditioner unit 4 that cools the air from the blower unit 3 and then adjusts the temperature of the air to supply it to the passenger compartment.
The intermediate duct 5 sends air from the blower unit 3 to the air conditioning unit 4. The air conditioning unit 4 is arranged substantially in the center in the vehicle width direction, while the blower unit 3 is arranged in front of the passenger seat at a predetermined distance from the air conditioning unit 4 toward the left side of the vehicle body. Further, the lower end of the blower unit 3 is positioned above the lower end of the air conditioning unit 4 to secure a wide foot space for passengers in the passenger seat.

The blower unit 3 is provided with a casing 6 which is divided into two left and right portions at a substantially central portion in the vehicle width direction, which are integrated by using a fastener or the like. An air intake portion 7 for taking in air to the air conditioner 1 is provided on the upper side of the casing 6, while a blower portion 8 for blowing the taken air to the air conditioning unit 4 is provided at the lower side. . As shown in FIG. 1, an outside air intake port 10 for taking in air outside the vehicle compartment and an inside air intake port 11 for taking in air inside the vehicle cabin are provided on the upper portion of the air intake portion 7. Further, an inside / outside air switching damper 12 is provided inside the air intake portion 7 and is formed so as to close one of the two and open the other. There is.

Specifically, the upper portion of the air intake portion 7 has a rectangular shape in which the front surface portion is inclined toward the rear of the vehicle body toward the upper side, while the rear surface portion is formed into a rectangular shape such that the upper portion is inclined toward the front portion of the vehicle body. The upper edges of the front portion and the rear surface portion are continuous with each other, and are formed to have a substantially triangular cross section when viewed in the vehicle width direction. The outside air intake 10 and the inside air intake 11 are opened in a rectangular shape on the front surface portion and the rear surface portion, respectively,
Further, a grill 13 is integrally formed with each of the intakes 10 and 11. On the other hand, the side surface portion of the air intake portion 7 is provided so as to connect the corresponding side edges of the front surface portion and the rear surface portion. The inside / outside air switching damper 12 is provided for each intake 1
It has a rectangular shape larger than 0 and 11 and has an axis extending in the vehicle width direction at its upper edge, and both ends thereof are supported on the upper end sides of the pair of side surface portions of the air intake portion 7, respectively.

On the lower end side of the inside / outside air switching damper 12,
A connecting portion (not shown) that penetrates the side surface portion is provided so that the output shaft of the actuator 15 attached to the side surface portion of the air intake portion 7 is connected. Further, a boss portion for fastening the actuator 15 with a screw or the like is integrally formed on the side surface portion. The actuator 15
Is configured to operate in response to a signal from an air conditioning control unit (not shown) arranged on the vehicle body. The signal line from the air conditioning control unit is connected to the coupler 17 of the actuator 15.
It is designed to be connected to.

When the inside / outside air switching damper 12 is rotated around its axis by the actuator 15 to bring the outside air inlet 10 to the fully open position, the inside air inlet 11 is opened.
Is fully closed to enter the outside air intake mode for taking in only the outside air, while the inside / outside air switching damper 12 is rotated in the opposite direction from that state to the position where the outside air intake 10 is fully closed. When the inside air intake 11 is fully opened, the inside air circulation mode is set.

On the other hand, in the lower part of the air intake section 7, as shown in FIG.
As shown in FIG. 3, a filter installation portion 21 in which a filter 20 for filtering the taken-in air is installed is provided, and although not shown, an opening is formed on the vehicle body rear side of the filter installation portion 21. And the filter 2
It is possible to exchange 0. Below the filter arrangement portion 21 is the blower portion 8, a centrifugal multi-blade fan as a blower fan 23 is arranged with its rotation axis oriented in the vertical direction, and a fan drive is provided below the blower fan 23. A motor 24 is provided. As shown by the arrow in this figure, the rotation of the blower fan 23 takes in air from the upper part of the air intake section 7, passes through the filter 20, and is introduced into the blower section 8.

An opening 8a is formed in the right side wall of the blower unit 8 and is connected to the left end of the intermediate duct 5. This intermediate duct 5 has a tilted duct 5a and a horizontal duct 5b formed so as to extend obliquely downward from the left end portion thereof toward the lower end side of the air conditioning unit, and the right end portion of the horizontal duct 5b has the right end portion of the air conditioning unit 4. The air conditioning unit 4 is opened through the opening 25 formed on the lower end side of the casing.
Communicates with the interior of the. The cross-sectional shape of the inclined duct 5a is formed in a substantially rectangular shape at the left end portion and a substantially triangular shape at the right end portion, and the shape of the intermediate portion smoothly changes from a rectangular shape to a triangular shape. Is reduced. The horizontal duct 5b has a substantially triangular cross section, and is provided with a plurality of protrusions therein to rectify the air flow.

The horizontal duct 5b and the introduction portion 39 of the casing 30 are connected by a portion having a similar triangular cross section. Therefore, the blower unit 3 and the air conditioning unit 4 are separated by the amount of the intermediate duct 5, and the air from the blower unit 3 passes through the inside of the intermediate duct 5 as shown by the arrow in FIG. To the air conditioning unit 4. In particular, high-speed air on the outer side in the radial direction of the blower unit 3 (rear side of the vehicle body) is blown to the wide side (rear side of the vehicle body) of the introduction portion 39 having a substantially triangular cross section, and low speed on the inner side in the radial direction (front side of the vehicle body). Air is sent to the narrow side (front side of the vehicle body) of the introduction portion 39 having a substantially triangular cross section.

As shown in FIG. 2, the intermediate duct 5 has a substantially rectangular cross section that is long in the front-rear direction of the vehicle body, and the rotation speed of the fan drive motor 24 is changed on its upper wall. A control circuit 26 for controlling the operation is provided. At the upper end of the control circuit 26, a coupler 27 for connecting the connector from the air conditioning controller is provided.

The air conditioning unit 4 is provided with a casing 30 which is long in the vertical direction as a whole and is formed in a rectangular box shape larger than the casing 6 of the blower unit 3, and the casing 30 constitutes a lower casing. Is divided vertically into a bottom wall portion 31 and a main body portion 32 that constitutes the upper casing. Further, the main body portion 32, like the blower unit 3, has a central portion in the width direction of the vehicle.
It is divided into two. Inside this casing 30,
As shown in FIG. 6, an evaporator 33, which is an element of the refrigeration cycle, is arranged above the opening 25 to which the intermediate duct 5 is connected, and a heater core 34 is arranged above the evaporator 33. Further, a plurality of conditioned air outlets are formed in the upper portion of the casing 30 of the air conditioning unit 4, and the air flow from the blower unit 3 is made by the air conditioning unit 4 as shown by the arrows in FIG. The flow will be upwards inside.

The evaporator 33 is the blower unit 3
Is a heat exchanger for cooling air from, for example, a large number of tubes formed of metal thin plates such as aluminum are laminated so as to extend in the same direction, and between adjacent tubes, from the same metal thin plate. The formed corrugated fins are interposed. A low-temperature refrigerant generated by the refrigeration cycle circulates in the tube of the evaporator 33 to cool the air passing through the evaporator 33. That is, although not shown, the evaporator 33 is provided with tanks communicating with the tubes on both ends of the tube, and one of the tanks flows in by a partition plate arranged in the central portion in the stacking direction of the tubes. It is divided into a tank section and an outflow tank section. Then, the refrigerant flowing into the inflow tank section flows to the other tank via the upstream tube connected to the inflow tank section, and then flows out of the one tank via the downstream tube from the other tank. To the tank section.

The evaporator 33 has the tube extending in the front-rear direction of the vehicle body, and the evaporator 33
The rearward side of the vehicle body is inclined so as to be positioned higher, and all the air from the blower unit 3 passes through the evaporator 33. Cooler pipes (not shown) are respectively connected to the inflow tank portion and the outflow tank portion of the evaporator 33, and each cooler pipe is provided on the left side wall portion 30a of the casing 30 of the air conditioning unit 4 (only shown in FIG. 5). ) From the casing 30 to the outside of the casing 30 and then to the front of the vehicle body.

When the evaporator 33 cools the air, the condensed water generated in the evaporator 33 is discharged to the outside of the vehicle through the drain portion 35 provided in the bottom wall portion 31 of the casing 30. As shown in FIG. 7 to FIG. 11, the drain portion 35 has a drain port 80 formed integrally with the bottom wall portion 31 and a drain port 80 on the left side portion (on the blower unit side) of the bottom wall portion 31 on the front end side of the vehicle body. A drain passage 81 formed integrally with the drain port 80 is provided. The drain passage 81 extends from the drain port 80 to the blower unit side substantially parallel to the dash panel, and the outlet portion 82 thereof projects to the left side of the vehicle body (the blower unit side) from the left side wall portion 30a of the casing 30 of the air conditioning unit 4. Is provided so as to extend. A drain pipe 83 is connected to the outlet portion 82 at a substantially right angle, and the tip of the drain pipe 83 is inserted into the drain opening hole of the dash panel P.

The bottom wall portion 31 has the lowest portion at the drain port 80 and the highest portion at the diagonal portion thereof, and forms an inclined surface from the diagonal portion toward the drain port 80. further,
It is also provided so as to be inclined downward from the drain port 80 toward the outlet portion 82 of the drain passage 81. Due to this shape, the condensed water stored in the bottom wall portion 31 is guided to the drain port 80, is guided to the outlet through the drain passage 81, and is discharged from the drain pipe 83 to the outside of the vehicle compartment.

The intermediate duct 5 is connected to the blower unit 3 and, as shown in FIG. 5, is provided with an inclined duct 5a inclined obliquely downward from the blower unit 3 toward the air conditioning unit 4, and the inclined duct 5a and the air conditioning unit 4 are provided. The horizontal duct 5b communicating with the casing 30 of FIG. The inclined duct 5a is formed as a separate member. Horizontal duct 5b
Is molded integrally with the casing 30, and in detail,
The lower half of the horizontal duct 5b is formed integrally with the bottom wall portion 31, and the upper half is formed integrally with the main body portion 32.

As shown in FIG. 12, the inclined duct 5a is
The connecting portion of the opening 8a of the blower unit 8 of the blower unit 3 has a substantially rectangular cross section, and the connecting portion with the horizontal duct 5b has a substantially triangular cross section. In the inclined duct 5a, the airflow smoothly flows while being corrected in a rectangular cross section to a triangular cross section. In this embodiment, since the horizontal duct 5b is formed integrally with the casing 30 and the inclined duct 5a is formed as a separate component, the shape is designed so that the airflow in the inclined duct 5a smoothly flows. And can be molded.

When an air flow is sent directly from the inclined duct 5a to the introduction part 39 of the casing 30, the air flow that is inclined downwards collides with the bottom wall 31 and disturbs or winds up the condensed water on the bottom wall 31. Since there is a large possibility, in the present invention,
The horizontal duct 5b was provided immediately before entering the introduction section 39. As a result, the air blown obliquely downward from the blower unit 3 through the inclined duct 5a is slightly redirected in the substantially horizontal direction by the horizontal duct 5b and guided to the introduction portion 39 in the air conditioning unit 4. Therefore, there is almost no air flow that is directed obliquely downward in the introduction portion 39, the collision of the air flow with the bottom wall portion 31 is minimized, and the condensed water flowing through the bottom wall portion 31 can be prevented from jumping up.

Further, in particular, a flat surface portion 31a is formed in the middle portion of the bottom wall portion 31 and forms substantially the same plane as the horizontal duct 5b. With this configuration, the air flowing through the intermediate duct 5 flows along the flat surface portion 31a in the introduction portion 39, and then is redirected and sent to the evaporator 33 on the upper portion. Therefore, the collision between the flow of the condensed water flowing toward the drain port 80 on the inclined surface of the bottom wall 31 and the air flow entering the introduction portion 39 is effectively avoided, and the air flow impedes the flow of the condensed water. Is significantly reduced.

The air sent from the blower unit 3 through the intermediate duct 5 to the introduction section 39 is
It is sent to the introduction portion 39 in the air conditioning unit 4 while being converted from a into a substantially horizontal direction by a horizontal duct 5b having a substantially triangular cross section. Taking an air velocity distribution at that time, an air flow having a relatively high velocity on the outer side in the radial direction of the blower fan 23 of the blower unit 3 flows on the rear side of the vehicle body, and on the side of the substantially triangular wide cross-sectional area of the horizontal duct 5b. Flow, as is casing 3
Sent to 0. That is, a high-speed air flow flows through a portion having a long vertical dimension of the cross-sectional shape on the rear side of the vehicle body, and a relatively slow air flow has a substantially triangular narrow cross-sectional area side, that is, the front side of the vehicle body. Flows through the short part of the vertical dimension. Therefore, the drain port 80 located in front of the vehicle body
The condensate water that collects in is blocked by the air flow.

Furthermore, on the bottom wall portion 31 of the casing 30, ribs 8 are provided in a position in front of the vehicle body with respect to the flat portion 31a in a direction parallel to the flow direction of the air introduced from the intermediate duct 5.
4 are erected. With this rib 84, the drain port 8
It is possible to prevent the condensed water collected at 0 from being taken into the evaporator 33 by the air flow sent to the air conditioning unit 4. In particular, the condensed water tends to flow obliquely downward on the lower surface of the evaporator 33 and drop from the front side of the vehicle body to the bottom wall portion 31.
Will fall to. The air flow velocity on the front side of the rib 84 is relatively low, and does not hinder the fall and collection of the condensed water.

A mounting portion 85 for mounting the air conditioning unit 4 on the dash panel P is integrally provided at the end of the outlet portion 82 of the drain passage 81. Since the stud bolt fixed to the dash panel P is inserted into the hole of the mounting portion 85 and fastened with the nut, the drain pipe 83
Drain pipe 8 when is attached to the dash panel P
There is no rattling between 3 and the dash panel P, and the sealing property is improved.

The air conditioning unit 4 is divided into upper and lower parts and comprises a main body portion 32 which constitutes an upper casing and a bottom wall portion 31 which constitutes a lower casing. The main body 32 is divided into left and right parts, and the evaporator 33 and the heater core 34 are sandwiched between the two main parts 32 and held, so that the evaporator 33 and the heater core 34 are assembled. Easy and secure to hold. The evaporator 33 has a left side surface portion 30a so that the evaporator 33 can be taken out independently without disassembling the casing.
A lid member, which is a separate member, is provided on the (blower unit side). Further, since the bottom wall portion 31 does not have a vertical dividing surface, there is no risk of leakage of condensed water, and the drain water is reliably discharged from the drain port 80.

In general, when the drain passage 81 is formed integrally with the bottom wall portion 31 as a hollow body, a narrow space is provided due to the escape gradient of the core material (core material for forming the hollow portion) at the time of molding the casing. It is difficult to form deep long grooves. Moreover, forming long long grooves is also limited. On the other hand, in the present invention, the drain passage 80 is divided into the long groove portion 81a and the lid portion 81b, the long groove portion 81a is formed integrally with the bottom wall portion 31, and the lid member 81b is integrated with the main body portion 32. Since it is configured as described above, the long groove portion 81a can be easily formed even if the dimension in the depth direction or the dimension in the length direction is slightly long, and the shape and size of the drain passage 80 have flexibility, and the condensed water is retained. A space can be secured and a shape that smoothly discharges can be set. In addition, the degree of freedom in designing the mounting position of the drain pipe 83 of the dash panel P is increased.

The heater core 34 is a heat exchanger for heating the air that has passed through the evaporator 33, and is composed of tubes and fins laminated in the same manner as the evaporator 33. High-temperature cooling water from the engine circulates therein to heat the air passing through the heater core 34. Similarly to the cooler pipes of the evaporator 33, the heater core 34 is also provided with heater pipes (not shown) for inflowing and outflowing the engine cooling water, and each heater pipe is provided from the left side wall portion 30a of the casing 30. It is formed so as to extend outward and then extend forward of the vehicle body. Therefore, since each heater pipe is located above the intermediate duct 5, the passenger on the passenger seat does not come into contact with the heater pipe, and the attachment of the heat insulating member to the heater pipe can be omitted.

Two air mix dampers 36 and 37 (temperature adjusting dampers) for adjusting the temperature of the conditioned air are provided between the evaporator 33 and the heater core 34. The temperature adjustment by the air mix dampers 36 and 37 is performed by changing the ratio of the amount of air passing through the heater core 34 to the amount of air passing through the bypass passage 38 that bypasses the heater core 34, of the air passing through the evaporator 33. Done by

More specifically, as shown in FIG. 6, inside the casing 30 of the air conditioning unit 4, an evaporator 33 is formed by a partition wall 40 integrally formed inside the casing 30.
The installation space 41 is divided into an installation space 41 and an installation space 42 of the heater core 34. As shown in FIG. 6, the partition wall portion 40 has a front partition wall 40a extending substantially horizontally on the front side of the vehicle body and a rear partition wall 4 having an inverted V shape on the rear side of the vehicle body when viewed from the vehicle width direction.
0b, the front partition 40a and the rear partition 40b.
And two opening portions 43, 4 for communicating the evaporator installation space 41 and the heater core installation space 42, respectively.
4 is formed, and the air mix dampers 36, 3 are formed.
It is designed to be opened and closed by 7. Further, the rear partition wall 40b of the partition wall 40 is formed with an opening 48 that connects the bypass passage 38 and the evaporator layout space 41 to the rear side of the heater core space 42.

The two air mix dampers 36, 37
Similar to the inside / outside air switching damper 12, each has an axis extending in the vehicle width direction, both ends of which are supported by the casing 30, and the casing 30 is provided with respect to the respective axial ends on the left side of the vehicle body. An output shaft of an actuator 45 arranged on the left side wall portion 30a of the above is connected via a link mechanism 46. Like the actuator 15 of the inside / outside air switching damper 12, the actuator 45 is fixed to a boss portion projecting from the casing left side wall portion 30a.

The two air mix dampers 36, 37
Is linked by the link mechanism 46, and is rotated by the actuator 45 from a position where each of the front and rear openings 43 and 44 is fully opened to a position where they are fully closed. At this time, when the rear side air mix damper 37 is rotated to a position where the rear side opening 44 is fully opened, the upstream end opening 48 of the bypass passage 38 is fully closed. All the air passes through the heater core 34. Like the actuator 15 of the inside / outside air switching damper 12, the actuator 45 of the air mix dampers 36, 37 also has a coupler 49 (shown only in FIGS. 3 and 5) to which the signal line of the air conditioning controller is connected. is doing.

Although not shown, the evaporator 33
Is provided with a temperature sensor for detecting the temperature of its surface, while the heater core 34 is provided with a water temperature sensor for detecting the temperature of the engine cooling water therein. The signal line of each of these sensors is provided on the left side wall portion 30a of the air conditioning unit 4.
And is connected to the air conditioning controller.

Further, in the upper part of the casing 30 of the air conditioning unit 4, vent outlets 50, 50, ... Are formed in the inclined portion on the rear side of the vehicle body, and the defrost outlet 51, in the substantially horizontal portion on the front side thereof. 51 is formed. Further, a foot outlet 52 (only the right one is shown in FIG. 6) is formed in each of the left side wall 30a and the right side wall 30b (shown only in FIG. 5) in the upper portion of the casing 30. The vent outlets 50, 50, ... Are connected to the vent grilles 53, 53 provided in the instrument panel 2 shown in FIG. 4 via vent ducts (not shown). The conditioned air from 50 is mainly blown to the upper body of the occupant. on the other hand,
The defrost outlets 51, 51 are connected to defrost grills 54, 54 provided on the front end side of the instrument panel 2 via defrost ducts (not shown), and the conditioned air from each defrost outlet 51 is connected. Is designed to blow out toward the inside of the front windshield. Further, ducts 56 and 57 extending downward are connected to the left and right foot outlets 52 and 52, respectively, and both ducts 56 and 57 are connected to the instrument panel 2.
It is opened near the feet of the driver's seat passenger and the passenger's passenger on the lower side, and conditioned air from the foot outlets 52, 52 is blown toward the feet of the passenger.

Of the ducts 56, 57 connected to the foot outlets 52, 52, the duct 56 on the driver's seat side is arranged so as to wrap around from the right side wall portion 30b of the casing 30 to the rear side wall portion. It has a relatively large cross-sectional area, and is used as a rear-seat duct that also passes conditioned air to the rear-seat occupants. The right side wall portion 3 of the casing of the dual-purpose duct 56
On the front side of the portion corresponding to 0b, as described above, the openings 55, 55 for blowing out conditioned air to the driver's seat occupant are formed, while on the lower end side of the portion corresponding to the rear wall portion of the casing 30, there is a rear side. Connection parts 58, 58 to which upper ends of floor ducts (not shown) for guiding conditioned air to seat occupants are connected are formed.

Further, the casing 3 of the air conditioning unit 4
In the interior of 0, two blowing direction switching dampers 60, 61 for opening and closing the outlets 50, 51, 52 to change the blowing direction of the conditioned air are provided in the same manner as the air mix dampers 36, 37. These are operated by a link mechanism 62 arranged on the left side wall 30a of the casing 30 of the air conditioning unit 4 and an actuator 63 fixed to the boss of the left side wall 30a.

Of the blowing direction switching dampers 60 and 61, the front one is the defrost damper 60 which opens and closes the defrost outlets 51 and 51, and the rear one is the vent outlets 50 and 50. It is a vent damper 61. The dampers 60 and 61 are linked by the link mechanism 62, and when they are driven by the actuator 63, the dampers 60 and 61 each have an opening degree corresponding to each blowing mode. That is, the air conditioning unit 4 can be switched to each vent mode such as a vent mode, a defrost mode, a foot mode, and a bi-level mode in which vents of the vent and foot are blown from each vent 50, 52 depending on the open / close state of the two dampers 60, 61. It is said that. Incidentally, the actuator 63 of the blowout direction switching dampers 60 and 61 also has a coupler 65 (only shown in FIGS. 3 and 5) to which the signal line of the air conditioning control unit is connected like the actuator 15 of the inside / outside air switching damper 12. Have

As described above, the link mechanisms 46, 62 and the actuators 45, 63 of the dampers 36, 37, 60, 61 of the air conditioning unit 4 are collectively arranged on the left side wall portion 30a of the air conditioning unit 4. Since the air conditioning unit 4 is assembled, it can be attached from one direction at a time.

Next, regarding the mounting of the air conditioner 1 on the vehicle body, first, the respective mounting portions of the blower unit 3 and the air conditioning unit 4 will be described. A pair of brackets 6 is provided on each of the left and right sides of the blower unit 8 of the blower unit 3.
8 and 68 are provided, and a bracket 69 that obliquely protrudes from the right side of the filter arrangement portion 21 toward the right side of the vehicle body is provided. On the other hand, the mounting portion of the air conditioning unit 4 has a flange 70 integrally formed with the drain portion 35.
And a pair of flanges 71, 71 respectively provided on the left and right sides of the upper portion of the casing 30. Further, while through holes are formed in the attachment portions 68 to 71 of the blower unit 3 and the air conditioning unit 4, the dash panel P has a through hole (not shown) so as to correspond to the position of each through hole.
Stud bolts are attached. Further, through holes are formed in the dash panel P at positions corresponding to the positions of the cooler pipe, the heater pipe, and the drain passage. Then, the mounting portions 68 to 7 of the respective units 3 and 4
When the air conditioner 1 is positioned on the vehicle body so that the stud bolts are inserted into the through holes of the dash panel 1, the cooler pipe and the heater pipe face the engine room through the through holes of the dash panel P. In this state, the air conditioner 1 can be firmly fixed to the vehicle body by screwing the nuts onto the stud bolts. Further, the pipes in the engine room are connected to the pipes to connect the drain pipes 83 to the pipes. Connect the drainage pipe.

Further, according to the air conditioner of this embodiment, the air from the blower unit 3 is sent to the air conditioner unit 4 through the intermediate duct 5, and the air mix dampers 36, 37 of the air conditioner unit 4 and the blowout direction. Switching damper 6
The link mechanisms 46 and 62 of 0 and 61 and the actuators 45 and 63 are attached to the air-conditioning unit casing 30 on the blower unit 3 side, and the actuator 15 of the inside / outside air switching damper 12 of the blower unit 3 is attached to the air-conditioning unit of the blower unit casing 6. It is attached to the 4 side. Therefore, the actuators 15, 45, 46, 62, 63 can be housed in the dead space above the intermediate duct 5, and the air conditioner 1 can be downsized and the mounting space can be reduced. Further, the link mechanisms 46 and 62 and the actuators 45 and 63 to the air conditioning unit casing 30.
The air conditioning unit 4 can be installed from one direction.
The number of assembly steps can be reduced.

Further, the dampers 12, 36, 37, 60,
The actuators 15, 45, 63 of 61, the temperature sensor of the evaporator 33, the water temperature sensor of the heater core 34, and the connecting portions 17, 27, 49, 65 of the control circuit 26 of the blower fan 23 to the air conditioning control unit are connected to the blower unit. Since they are concentrated between the air conditioner 3 and the air conditioning unit 4, the number of man-hours for assembling the air conditioner 1 to the vehicle body can be reduced.

The right side wall portion 30 of the air conditioning unit 4
Since the link mechanisms 46 and 62 and the actuators 45 and 63 are not provided on the driver seat side b, that is, the cross-sectional area of the driver seat duct 56 can be increased and the shape can be freely set. can do. As a result, the amount of air blown to the driver's seat occupant and the rear seat occupant can be sufficiently secured only by the duct 56. In addition, the space near the feet of the driver's seat can be widened.

(Other Embodiments) The present invention is not limited to the above-mentioned embodiments, and includes various other embodiments. That is, although the above-described embodiment describes the case of a right-hand drive vehicle, the present invention can be applied to a left-hand drive vehicle. That is, the blower unit 3
Is arranged on the right side of the vehicle body and the link mechanisms 46 and 62 of the air conditioning unit 4 and the actuator 4 are arranged in the same manner as in the above embodiment.
The air conditioning units 4 and 5 may be attached to the air conditioning unit 4 side of the air conditioning unit 4, and the actuator 15 of the air blowing unit 3 may be attached to the air conditioning unit 4 side of the air blowing unit 3.

In the above embodiment, the intermediate duct 5 is
Although the inclined duct 5a is formed as a separate component and the horizontal duct 5b is formed integrally with the casing 30, the inclined duct 5a and the horizontal duct 5b may be formed as a separate component. Also,
The upper half of the horizontal duct 5b is the main body 32 of the casing 30.
In the case where the lid member of the evaporator 33 is provided as a separate component, it may be provided integrally with this lid member. Further, the lid member 81b of the drain passage 81 may be provided integrally with the lid member of the evaporator 33.

[0073]

As described above, according to the vehicle air conditioner of the first aspect of the invention, the air from the blower unit is sent to the air conditioner unit through the intermediate duct.
A drain port is provided on the bottom wall of the air conditioning unit, and a drain passage integrally connected to the drain port is provided so as to project to the side of the air conditioning unit, and a drain pipe is connected to the outlet of the drain passage. The drain water is discharged from the engine room to the engine room. With this,
The drain passage is provided so as to project laterally from the projection surface when the air conditioning unit is viewed from above and below, and the drain pipe is connected to the outlet of this drain passage, so the opening of the dash panel on the vehicle body side The position and the position of the drain port do not have to match in the front-back direction of the vehicle body, and the positional relationship between the two can be set freely by changing the length of the drain passage, and the degree of freedom in design can be greatly expanded.

In the case where the drain port is arranged on the passenger seat front side of the bottom wall of the air conditioning unit and on the vehicle body front side, and the drain passage is provided on the passenger seat side of the air conditioning unit so as to project from the air conditioning unit, an intermediate duct is formed. The drain port is opened at a position that is less affected by the air flow sent from the air conditioning unit to the air conditioning unit, and the condensed water is guided through the drain passage outside the projection surface of the air conditioning unit. It has an excellent effect of preventing water from being caught in the cooling heat exchanger.

In the air conditioning unit, the heat exchanger for heating and the heat exchanger for cooling are arranged substantially horizontally in the vertical direction, and an introduction portion for introducing air from the intermediate duct is provided below the lower heat exchanger for cooling. A bottom wall portion of the air conditioning unit is provided below the introduction portion, and the cooling heat exchanger is arranged so as to incline downward from the rear of the vehicle body to the front, and the connecting portion between the intermediate duct and the introduction portion has a cross section. In the case of a substantially triangular shape, since the drain port is provided at the tip of the narrower part of the substantially triangular shape and on the side of the blower unit and lower than the introduction part, the influence of the air flow sent to the air conditioning unit Condensed water can be discharged with almost no receiving.

The intermediate duct is connected to the blower unit,
An inclined duct inclined obliquely downward from the blower unit toward the air conditioning unit, and a horizontal duct connected to the inclined duct and the air conditioning unit to form a substantially horizontal air passage are provided, and the inclined duct is on the blower unit side. In the case where the connecting portion of the air duct is formed to have a rectangular cross section and the connecting portion of the horizontal duct is formed to have a substantially triangular cross section, the air flow sent from the air blowing unit to the air conditioning unit in the intermediate duct smoothly changes direction. The heat exchange efficiency can be improved because there is almost no turbulent flow.

A dash panel which constitutes a partition from the engine side is provided on the front side of the vehicle body of the air conditioning unit, and a mounting portion for mounting the air conditioning unit on the dash panel is integrally provided at the outlet portion of the drain passage. Then, the sealability between the drain pipe and the dash panel when the drain pipe is assembled to the dash panel is improved.

The air conditioning unit is composed of an upper casing and a lower casing which are divided into upper and lower parts, and the upper casing is divided into two parts on the left and right sides, and the cooling heat exchanger and the heating heat exchanger are divided into two upper casings. In the case of being sandwiched and held, the cooling heat exchanger and the heating heat exchanger can be easily assembled and securely held. In addition, since the lower casing does not have the vertical dividing surface, there is no risk of the condensed water leaking, and the condensed water is reliably discharged from the drain port.

A dash panel that forms a partition with the engine room is provided on the front side of the vehicle body of the air conditioning unit, the drain port is provided on the blower unit side of the lower casing and on the front side of the vehicle body, and the drain passage is the drain port. From the air-conditioning unit side, extending in a direction substantially parallel to the dash panel, provided to project from the air conditioning unit, the drain pipe is connected to the outlet portion of the drain passage, the drain pipe extends in a direction orthogonal to the dash panel, When the drain passage is inserted into the opening hole of the dash panel and the drain passage is composed of the long groove portion integrally formed in the lower casing and the lid portion of the long groove portion integrally formed in the upper casing, the drain passage is Instead of forming it as a hollow body, it can be formed as a long groove in the lower casing, and its upper surface can be covered with another member, so The drain passage can be integrally formed with the housing, and at this time, even if the dimension of the long groove portion in the depth direction or the dimension in the length direction is slightly long, it can be easily formed, and there is a degree of freedom in the shape and size of the drain passage. It is possible to secure a space for holding condensed water and set a shape for smooth discharge.

[Brief description of drawings]

FIG. 1 is a left-side rear perspective view showing an external appearance of an air conditioner according to an embodiment of the present invention.

FIG. 2 is a perspective view from the right rear side showing the appearance of the air conditioner.

FIG. 3 is a rear view showing the appearance of the air conditioner.

FIG. 4 is an explanatory diagram showing an arrangement state of an air conditioner.

FIG. 5 is a view corresponding to FIG. 3 showing the structure of the air conditioner.

FIG. 6 is a cross-sectional view showing the internal structure of the air conditioning unit.

FIG. 7 is a left side perspective view showing a bottom wall portion of the air conditioning unit.

FIG. 8 is a perspective view from the front right showing the bottom wall of the air conditioning unit.

FIG. 9 is a plan view of a bottom wall portion of the air conditioning unit.

FIG. 10 is a front view from the front of the bottom wall portion of the air conditioning unit.

FIG. 11 is a side view of the bottom wall portion of the air conditioning unit.

FIG. 12 is a perspective view of an intermediate duct.

[Explanation of symbols]

1 Air conditioner 2 Instrument panel 3 Blower unit 4 air conditioning unit 5 Intermediate duct 5a inclined duct 5b horizontal duct 12 Inside / outside air switching damper 15 Actuator 30 Air conditioning unit casing 31 Bottom wall 33 Evaporator (cooling heat exchanger) 34 Heater core (heat exchanger for heating) 35 Drain section 36 Air mix damper (temperature control damper) 37 Air mix damper (temperature control damper) 45 actuator 60 defrost damper (blowout direction switching damper) 61 Vent damper (Blowout direction switching damper) 63 actuator 80 drain port 81 drain passage 81a long groove 81b lid 83 Drain pipe 84 ribs 85 Mounting part P dash panel

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Isao Aono             3-11 Yoshikawa Industrial Park, Higashihiroshima City, Hiroshima Prefecture             In ceremony company Japan Climate Systems F-term (reference) 3L011 BP00

Claims (15)

[Claims] 1. An air conditioning unit disposed substantially in the center in the vehicle width direction inside an instrument panel of a vehicle, a blower unit disposed on the passenger side of the air conditioner unit, and air from the blower unit. An intermediate duct sent to the air conditioning unit, a cooling heat exchanger and a heating heat exchanger arranged in the air conditioning unit are provided, and air introduced into the air conditioning unit from the intermediate duct is introduced into the air conditioning unit. In a vehicle air conditioner configured to pass conditioned air through a cooling heat exchanger and a heating heat exchanger installed, a drain port is provided in a bottom wall portion of the air conditioning unit, and the drain port is integrated with the drain port. A drain passage that is connected to the air conditioning unit is provided so as to project to the side of the air conditioning unit, a drain pipe is connected to the outlet of the drain passage, and the drain pipe extends to the engine room side. Vehicle air conditioner according to claim Rukoto. 2. An air conditioning unit arranged substantially in the center in the vehicle width direction inside an instrument panel of a vehicle, a blower unit arranged on the passenger side of the air conditioning unit, and air from the blower unit. An intermediate duct that is sent to the air conditioning unit, and air introduced from the intermediate duct to the lower side of the air conditioning unit passes through a cooling heat exchanger and a heating heat exchanger that are vertically arranged side by side in the air conditioning unit. In a vehicle air conditioner configured to generate conditioned air, a drain port is provided in a bottom wall of the air conditioning unit, and a drain passage integrally connected to the drain port projects to a side of the air conditioning unit. An air conditioner for a vehicle, which is provided so as to extend, a drain pipe is connected to an outlet portion of the drain passage, and the drain pipe is provided so as to extend toward an engine room. 3. The drain port according to claim 1, wherein the drain port is arranged on a passenger seat side of a bottom wall of the air conditioning unit and on a vehicle body front side, and the drain passage is on a passenger seat side of the air conditioning unit. A vehicle air conditioner, which is provided so as to project from an air conditioning unit. 4. The bottom wall portion of the air conditioning unit according to claim 3, wherein the drain port is the lowest, the diagonal portion is the highest, and an inclined surface is formed from here to the drain port. An air conditioner for a vehicle, which is also provided so as to be inclined downward from the drain port toward the outlet of the drain passage. 5. The inclined duct according to claim 1, wherein the intermediate duct is connected to a blower unit and is inclined obliquely downward from the blower unit toward the air conditioning unit, and the inclined duct and the air conditioner. An air conditioner for a vehicle, comprising: a horizontal duct connected to the unit to form a substantially horizontal air passage. 6. The bottom wall portion of the air conditioning unit according to claim 5, wherein the drain port is the lowest, the diagonal portion is the highest, and an inclined surface is formed from here to the drain port. An air conditioner for a vehicle, which has a flat surface portion in an intermediate portion of the bottom surface portion and is provided so as to be inclined downward from the drain port toward the outlet portion of the drain passage. 7. The rib according to any one of claims 4 to 6, wherein a rib is provided on a bottom wall portion of the air conditioning unit at a position in front of the plane portion of the air conditioner unit in a direction parallel to a flow direction of air introduced from the intermediate duct. A vehicle air conditioner characterized by being installed upright. 8. The heat exchanger for heating and the heat exchanger for cooling are arranged vertically in the air conditioning unit substantially horizontally in the air conditioning unit, and the heat exchanger for cooling below is arranged. An inlet portion for introducing air from the intermediate duct is provided at a lower portion of the air conditioner, the bottom wall portion of the air conditioning unit is provided at a lower portion of the inlet portion, and the cooling heat exchanger is directed from the rear of the vehicle body to the front. The vehicle air conditioner is characterized in that the connecting portion between the intermediate duct and the introduction portion is formed to have a substantially triangular cross-section and is arranged to be inclined downward. 9. The intermediate duct according to claim 8, wherein the intermediate duct is connected to the blower unit, is inclined to the air conditioning unit from the blower unit, and is inclined to the air conditioning unit, and is connected to the inclination duct and the air conditioning unit. A horizontal duct forming a horizontal air passage, the connecting portion of the inclined duct on the side of the blower unit is formed in a rectangular cross section, and the connecting portion on the side of the horizontal duct is formed in a substantially triangular cross section. A vehicle air conditioner characterized by: 10. The dash panel according to claim 1, further comprising a dash panel that forms a partition from an engine side on the front side of the air conditioning unit, and the mounting portion for mounting the air conditioning unit on the dash panel is the drain. An air conditioner for a vehicle, wherein the air conditioner is integrally provided at the outlet of the passage. 11. The air conditioning unit according to claim 1, wherein the temperature of the conditioned air is adjusted by changing the ratio of the air introduced into the air conditioning unit and passing through the heating heat exchanger. A temperature control damper and a blowing direction switching damper that switches the blowing direction of the conditioned air are provided, and a drive mechanism and an actuator that drive the temperature control damper and the blowing direction switching damper respectively are provided on a side wall portion of the air conditioning unit on the blower unit side. An air conditioner for a vehicle, characterized in that 12. The inside / outside air switching damper for adjusting the amount of air taken in from the outside of the vehicle compartment and the amount of air taken in from the inside of the vehicle compartment, according to claim 1, and driving the inside / outside air switching damper. An air conditioner for a vehicle, characterized in that an actuator is provided on a wall portion of the blower unit on the air conditioning unit side. 13. The cooling heat exchanger according to claim 1, wherein the air conditioning unit is composed of an upper casing and a lower casing which are divided into upper and lower parts, and the upper casing is divided into left and right parts. An air conditioner for a vehicle, wherein the heating heat exchanger is held by being sandwiched between two upper casings. 14. A dash panel for partitioning an engine room is provided on a front side of a vehicle body of the air conditioning unit, and the drain port is located on a blower unit side of the lower casing and on a front side of the vehicle body. The drain passage extends from the drain port toward the blower unit in a direction substantially parallel to the dash panel and is provided so as to project from the air conditioning unit, and a drain pipe is connected to an outlet portion of the drain passage. Is
The drain pipe extends in a direction perpendicular to the dash panel and is inserted into an opening hole of the dash panel, and the drain passage is formed integrally with a long groove portion integrally formed with the lower casing and an upper casing. An air conditioner for a vehicle, comprising: the long groove lid. 15. The cooling heat exchanger housed in the air conditioning unit according to claim 1, wherein the cooling heat exchanger is provided so as to be inclined downward at the front of the vehicle body, and the cooling heat exchanger is provided below the cooling heat exchanger. The cross-sectional shape of the connecting portion of the air duct and the intermediate duct is formed in a substantially triangular shape with the front side of the vehicle body being tapered, and the outlet of the blower unit is provided at the rear side position in the front-rear direction of the vehicle body. Is guided to the introduction portion via a rear side of the vehicle body having a large opening width of the connecting portion via an intermediate duct.