JP6135433B2 - Air conditioner for vehicles - Google Patents

Description

  The present invention relates to a vehicular air conditioner improved in a drain water drainage method that is generated when air loses heat and condenses in heat exchange processing in an indoor heat exchanger.

In general, a vehicle air conditioner is installed on the roof of a vehicle, and an outdoor part and an indoor part partitioned by a partition plate are formed. A compressor, an outdoor fan, and an outdoor heat exchanger are provided outside the room, and an indoor fan and an indoor heat exchanger are provided inside the room.

In addition, in the indoor part, there are a return port for taking in air sent to the indoor heat exchanger from the inside of the vehicle, a drain pan for collecting drain water condensed in the indoor heat exchanger, and a drain hole for draining the drain water stored in the drain pan to the outside of the vehicle. Is provided.

Drain water drained in the drain pan is drained into the drain hole with a R-shaped structure with a downward slope so that the center is high and the side is low when the bottom surface of the vehicle air conditioner is viewed from the direction of travel. It has a structure that drains outside the car.

Further, as shown in FIGS. 3 (A) and 3 (B) of Patent Document 1, a large number of uneven protrusions are formed on the drain pan, and accompanying vibrations generated by acceleration / deceleration of the vehicle, etc. Thus, a method has been proposed in which the flow generated in the drain water is extinguished by uneven projections to prevent overflow of the drain water.

Japanese Utility Model Publication No. 61-43512 (FIGS. 3 (A) and 3 (B))

As described above, in drain water drainage, it is general that the bottom surface of the vehicle air conditioner has an R shape. However, a high manufacturing technique is required for forming the R shape. In recent years, there has been an increase in the need for a flat bottom surface even when the vehicle air conditioner is embedded in the roof of the vehicle or installed on the roof.

When the bottom surface of a vehicle air conditioner is flat, drain water tends to accumulate on the drain pan. Due to the generation of a strange odor due to the drain water being accumulated for a long time or the vibration generated by acceleration / deceleration of the vehicle, There was a problem that drain water overflowed to the return port and the indoor blower.

The present invention has been made to solve the above-described problems, and includes a mechanism for biasing the drain water flow on the drain pan to the drain hole even when the bottom surface is flat, and the drain water can be used for a long time. Overflow of drain water from the drain pan to the return port and the indoor blower is prevented so as not to accumulate in the drain pan.

An air conditioner frame mounted on the roof of the vehicle, and a compressor, an outdoor heat exchanger, an outdoor fan, an indoor heat exchanger, and an indoor fan housed in the air conditioner frame, The interior is partitioned by a partition plate to form an outdoor part and an indoor part, the compressor, the outdoor heat exchanger and the outdoor fan are installed outside the outdoor part, and the indoor fan and the indoor part are installed. The indoor heat exchanger and a drain pan for storing drain water condensed in the indoor heat exchanger are installed at the bottom of the indoor portion, and the drain water stored in the drain pan is placed outside the vehicle in the drain pan in the indoor portion. A drain hole for draining, a return port for sending in-vehicle air to the indoor heat exchanger, a first waterproof wall for preventing drain water from overflowing to the return port, and preventing overflow of drain water to the indoor blower Second waterproof to A moving vehicle air-conditioning apparatus configured by a, characterized in that a drainage mechanism and movable by the acceleration and deceleration of the vehicle for biasing the flow to the drain hole of the drain water accumulated in the drain pan.

According to the present invention, even when the bottom surface is flat, drain water stored in the drain pan can be efficiently drained from the drain hole to the outside of the vehicle. A vehicle air conditioner having a structure can be obtained.

It is a top view which shows the structure of the vehicle air conditioner which concerns on Embodiment 1 of this invention. It is sectional drawing of the AA in FIG. 1 which concerns on Embodiment 1 of this invention. It is sectional drawing which shows the structure of the indoor part except the indoor air blower seen from the advancing direction which concerns on Embodiment 1 of this invention. It is an enlarged view of B in FIG. 3 which concerns on Embodiment 1 of this invention. It is a top view which shows the structure of the indoor part except the indoor air blower concerning Embodiment 1 of this invention. It is sectional drawing which shows the structure of the indoor part except the indoor air blower seen from the advancing direction which concerns on Embodiment 2 of this invention. It is a top view which shows the structure of the indoor part except the indoor air blower and indoor heat exchanger which concern on Embodiment 2 of this invention. It is a top view which shows the structure of the indoor part except the indoor air blower and indoor heat exchanger which concern on the modification of Embodiment 2 of this invention. It is a top view which shows the structure of the indoor part except the indoor air blower concerning Embodiment 3 of this invention. It is sectional drawing of the CC line in FIG. 9 which concerns on Embodiment 3 of this invention.

Embodiment 1
1 is a plan view showing a configuration of a vehicle air conditioner according to Embodiment 1 of the present invention, and FIG. 2 is a cross-sectional view taken along line AA of FIG. 1 as viewed from the vehicle traveling direction. The air conditioner frame 1 mounted on the roof of the vehicle is composed of an indoor portion 3 and an outdoor portion 4 formed by partitioning a substantially central portion by a partition plate 2.

A compressor 5 that compresses the refrigerant, an outdoor heat exchanger 6 that liquefies the compressed refrigerant, and an outdoor blower 7 that releases heat released when the refrigerant is liquefied are installed outside the outdoor 4. .
An indoor heat exchanger 8 that vaporizes the liquefied refrigerant and an indoor blower 9 that sends air cooled when the refrigerant vaporizes are installed in the indoor portion 3.

At the bottom of the indoor portion 3, a drain pan 10 for storing drain water condensed when the refrigerant is vaporized by the indoor heat exchanger 8, a drain hole 11 for draining the drain water accumulated in the drain pan 10 to the outside of the vehicle, and indoor heat exchange And a return port 12 for taking in-vehicle air to be sent to the container 8.

A first waterproof wall 13 is provided around the opening of the return port 12 to prevent drain water accumulated in the drain pan 10 from overflowing into the return port 12. A second waterproof wall 14 is provided to prevent the indoor blower 9 from overflowing.

FIG. 3 is a cross-sectional view showing the configuration of the indoor portion 3 excluding the indoor blower 9 as viewed from the traveling direction, and FIG. 4 is an enlarged view of B in FIG. A drain pan 10 having a flat bottom surface is installed on the lower side of the indoor heat exchanger 8, a return port 12 is installed in the direction of the outer side of the vehicle body of the indoor heat exchanger 8, and a drain hole 11 is formed on the side wall of the outer side of the vehicle body. Installed.

A first rail 15 is provided on the first waterproof wall 13 on the indoor heat exchanger 8 side of the return port 12 along the vehicle traveling direction, and the first rail is provided on the second waterproof wall 14 of the indoor blower 9. 15 is provided in parallel with the second rail 16, and at least one wheel 17 is provided on each of the first rail 15 and the second rail 16.

The first rail 15 and the second rail 16 cover the top, bottom, left and right so that the wheel 17 does not come off, and the right and left of the cover of the first rail 15 and the second rail 16 and the wheel 17 respectively. A gap is secured between the upper portion and the upper portion so as not to obstruct the movement of the wheel 17.
For example, when the diameter of the wheel 17 is 20 mm, a clearance of, for example, 1 mm is secured between the wheel 17 and the left and right directions in the cover of the first rail 15 and the second rail 16, respectively.

The wheels 17 provided on each of the first rail 15 and the second rail 16 are connected by a wheel shaft 18 and move back and forth in the vehicle traveling direction due to vibration generated as the vehicle is accelerated and decelerated. Below the wheel shaft 18, for example, the rubber plate 19 is installed so as not to rotate in conjunction with the wheel 17, and the bottom of the rubber plate 19 is not in contact with the drain pan 10. The rail 16, the wheel 17, the wheel shaft 18, and the rubber plate 19 constitute a drainage mechanism 20.

Next, the operation will be described. FIG. 5 is a plan view showing a configuration of the indoor portion 3 excluding the indoor blower 9. The wheels 17 connected by the wheel shaft 18 can move back and forth in conjunction with each other on the first rail 15 and the second rail 16, and when the vehicle is accelerated, the vehicle 17 is directed in the reverse direction from the vehicle traveling direction. And move toward the vehicle traveling direction when decelerating.

As the wheel 17 moves back and forth, the wheel shaft 18 connected to the wheel 17 also moves back and forth. The drain water collected in the drain pan 10 is pushed away in either the front or rear direction by a rubber plate 19 attached to the wheel shaft 18 and drained from the drain hole 11 to the outside of the vehicle. The movements of the wheel shaft 18 and the rubber plate 19 are indicated by black arrows, and the flow of drain water is indicated by white arrows.

According to the first embodiment, even when the bottom is flat and it is difficult to drain the drain water outside the vehicle, the drain water can be drained efficiently with a simple structure without using power equipment such as a drain pump. It is. Further, since it is not necessary to process the bottom part into a downwardly inclined R shape, the manufacturing can be simplified.

In the first embodiment, an example of the rubber plate 19 is shown as a plate-like member for energizing the flow of the drain water to the drain hole 11. However, the rubber plate 19 is not limited to the rubber plate. Also good.

In addition, the number of wheels 17 and wheel shafts 18 is not limited, and any number may be installed according to the size of the drain pan 10 and the amount of drain water generated.

Embodiment 2
As a second embodiment of the present invention, an example in which the drainage mechanism 20 shown in the first embodiment is not adopted will be described. FIG. 6 is a cross-sectional view showing the configuration of the indoor portion 3 excluding the indoor blower 9 as viewed from the traveling direction according to the second embodiment. In addition, the same code | symbol is attached | subjected to the same structure as the structure shown in FIG. 3, FIG. 5, and description is abbreviate | omitted.

At least one rotating shaft 21 is mounted on the drain pan 10, and a fixed shaft 22 extending in the lateral direction is fixed to the rotating shaft 21. For example, a rubber plate 23 is installed below the fixed shaft 22, and the drainage mechanism 24 is configured by the rotating shaft 21, the fixed shaft 22, and the rubber plate 23.
At this time, the bottom of the rubber plate 23 is not in contact with the drain pan 10.

Next, the operation will be described. FIG. 7 is a plan view showing a configuration of the indoor portion 3 excluding the indoor blower 9 and the indoor heat exchanger 8 according to the second embodiment. The rotating shaft 21 can rotate 360 degrees on the drain pan 10, but either the fixed shaft 22 fixed to the rotating shaft 21 or the rubber plate 23 installed on the fixed shaft 22 is attached to the first waterproof wall 13. Stops rotation when touching.

The rotating shaft 21 rotates in the reverse direction from the vehicle traveling direction when the vehicle is accelerated, and rotates in the vehicle traveling direction when the vehicle is decelerated. Along with the rotation of the rotating shaft 21, the rubber plate 23 installed on the fixed shaft 22 also rotates in conjunction with it, and the drain water on the palen pan 10 is washed away in either the front or rear direction and drained from the drain hole 11 to the outside of the vehicle. . The movement of the fixed shaft 22 and the rubber plate 23 is indicated by a black arrow, and the flow of drain water is indicated by a white arrow.

FIG. 8 is a modification of the second embodiment, and is a plan view when the rotation stopping device 25 is installed. For example, the rotation stop device 25 is provided on the drain pan 10 at an arbitrary position near the inner side of the vehicle body from the installation position of the rotary shaft 21.

When either the fixed shaft 22 fixed to the rotating shaft 21 or the rubber plate 23 rotates until it comes into contact with the first waterproof wall 13, the rotating direction is reversed. At this time, the fixed shaft 22 is prevented from rotating by the first waterproof wall 13 and temporarily stops rotating.

However, when one of the fixed shaft 22 and the rubber plate 23 comes into contact with the rotation stopping device 25, a certain angle (for example, minus 170 degrees when the vehicle traveling direction from the rotation shaft 21 is set as a reference of 0 degrees). The rotation is stopped in a state where it has been rotated to prevent contact between the fixed shaft 22 and the rubber plate 23 to the first waterproof wall 13.

By installing the rotation stop device 25, the rotating shaft 21 does not rotate more than 180 degrees, avoiding the situation where the rotational motion cannot be temporarily maintained, and draining water outside the vehicle without stagnation as the vehicle accelerates or decelerates. It is possible to drain.

According to the second embodiment, it is not necessary to install the first rail 15 and the second rail 16, and it is possible to obtain the same effects as the first embodiment with a simpler structure than the first embodiment. It is.

In the second embodiment, an example of the rubber plate 23 is shown as a plate-like member for energizing the flow of drain water to the drain hole 11. However, the rubber plate is not limited to the rubber plate as in the first embodiment. A brush or the like may be employed.

In addition, the number of installed drainage mechanisms 24 is not limited to two, and an arbitrary number may be installed according to the size of the drain pan 10 and the amount of drain water generated. The number and the installation positions of the rotation stop device 25 are not limited.

Further, the installation position of the rotary shaft 21 need not be limited to the place near the return port 12, and may be provided at the center of the drain pan 10, for example. If the rotation shaft 21 is installed at the center of the drain pan 10 and the fixed shaft 22 has a length that does not contact the first waterproof wall 13, the rotation stop device 25 need not be installed.

Embodiment 3
As a third embodiment of the present invention, an example in which a backflow prevention wall 26 is provided near the drain hole 11 will be described. FIG. 9 is a plan view showing the configuration of the indoor portion 3 excluding the indoor blower 6 according to Embodiment 3. FIG. In addition, the same code | symbol is attached | subjected to the same structure as the structure shown in FIG. 3, FIG. 5, and description is abbreviate | omitted.

  The drainage mechanism 20 is the same as that shown in the first embodiment, and a backflow prevention wall 26 having a height of, for example, 5 mm is provided on the drain pan 10 in parallel with the front and rear walls of the indoor portion 3 in the vehicle traveling direction. The backflow prevention wall 26 is a thin plate having a thickness of 1 mm, for example, extending in the lateral direction when viewed from the vehicle traveling direction.

  The backflow prevention wall 26 is fixed on the drain pan 10 with both ends thereof in contact with the first waterproof wall 13 and the second waterproof wall 14, and both ends of the backflow prevention wall 26, the first waterproof wall 13, and the second waterproof wall 13 are fixed. It is assumed that there is no gap at the contact point with the waterproof wall 14.

  As the installation position of the backflow prevention wall 26, for example, backflow prevention is provided at the position of the front end of the first waterproof wall 13 in the vehicle traveling direction and the position of the rear end of the first waterproof wall 13 in the vehicle traveling direction. A wall 26 is provided.

Next, the operation will be described. 10 is a cross-sectional view taken along the line CC of FIG. 9 according to the third embodiment. For example, when the vehicle decelerates, the drain water accumulated in the drain pan 10 is pushed by the rubber plate 19 of the drainage mechanism 20 and moves in the vehicle traveling direction, gets over the backflow prevention wall 26 and drains out of the vehicle from the drainage hole 11 (drainage). Water movement is indicated by white arrows). When the vehicle accelerates, the drainage mechanism 20 moves in the direction opposite to the traveling direction of the vehicle, and drains the drain water in the direction opposite to the traveling direction of the vehicle.

For example, when the vehicle decelerates, the drain water pushed away in the vehicle traveling direction is drained out of the vehicle through the drain hole 11, but some drain water may remain on the drain pan 10 without being drained. The drain water remaining on the drain pan 10 flows in the direction opposite to the vehicle traveling direction and returns to the center of the drain pan 10 when the vehicle changes from deceleration to acceleration and the flow direction is reversed. However, the drain water that has once climbed over the backflow prevention wall 26 is blocked by the backflow prevention wall 26 and cannot return to the center of the drain pan 10.

According to the third embodiment, the installation of the backflow prevention wall 26 prevents the drain water pushed out by the drainage mechanism 20 in the direction of the drainage hole 11 from returning again to the center of the drain pan 10 due to the acceleration / deceleration of the vehicle. The drain water can be efficiently drained from the drain pan 10.

Even if the backflow prevention wall 26 is employed in the drainage mechanism 24 shown in the second embodiment, the same effect can be obtained.

The height of the backflow prevention wall 26 is not limited to 5 mm, and may be any height that is lower than any of the first waterproof wall 13 and the second waterproof wall 14, and the size of the drain pan 10 and the drain water. It may be a height corresponding to the amount of occurrence. The shape of the backflow prevention wall 26 is not limited to a plate shape, and may be a hat shape or a mountain shape, for example.

In addition, the installation position of the backflow prevention wall 26 is not limited to the front end and the rear end of the first waterproof wall 13 in the vehicle traveling direction, and is one third from the vehicle traveling direction with respect to the total length of the drain pan 10. It is possible to obtain the effect of preventing the backflow of drain water by providing it at a location ahead of the vehicle, or at a location behind two-thirds of the vehicle traveling direction.

In addition, the number of backflow prevention walls 26 is not limited to two, and an arbitrary number may be installed according to the size of the drain pan 10 and the amount of drain water generated.

DESCRIPTION OF SYMBOLS 1 Air conditioner frame, 2 Partition plate, 3 Room exterior, 4 Indoor part, 10 Drain pan, 11 Drain hole, 12 Return port, 13 1st waterproof wall, 14 2nd waterproof wall, 15 1st rail, 16 1st Two rails, 17 wheels, 18 wheel shafts, 19 rubber plate, 20 drainage mechanism, 21 rotation shaft, 22 fixed shaft, 23 rubber plate, 24 drainage mechanism, 25 rotation stop device, 26 backflow prevention wall

Claims (6)

An air conditioner frame mounted on the roof of the vehicle;
A compressor, an outdoor heat exchanger, an outdoor fan, an indoor heat exchanger, and an indoor fan housed in the air conditioner frame,
The interior of the air conditioner frame is partitioned by a partition plate to form an outdoor part and an indoor part,
The compressor, the outdoor heat exchanger, and the outdoor fan are installed outside the room,
In the indoor portion, the indoor blower and the indoor heat exchanger,
A drain pan for storing drain water condensed in the indoor heat exchanger is installed at the bottom of the indoor portion,
In the drain pan in the room,
Drainage holes for draining drain water stored in the drain pan to the outside of the vehicle;
A return port for sending air into the indoor heat exchanger;
In the vehicle air conditioner configured to include a first waterproof wall that prevents overflow of drain water to the return port and a second waterproof wall that prevents overflow of drain water to the indoor blower,
An air conditioner for a vehicle comprising a drainage mechanism that is movable by acceleration / deceleration of a vehicle and energizes a flow of drain water that accumulates in the drain pan to the drain hole. The drainage mechanism is
A first rail is provided on the side of the first waterproof wall along the vehicle traveling direction,
A second rail is provided on the side surface of the second waterproof wall in parallel with the first rail,
Installing at least a pair of wheels connected by wheel axles on the first rail and on the second rail;
The vehicle air conditioner according to claim 1, wherein a plate-like member for energizing a flow of drain water to the drain hole is provided on the wheel shaft. The drainage mechanism is
Installing at least one rotating shaft pivotally mounted on the drain pan;
The vehicle air conditioner according to claim 1, wherein a plate-like member that urges the flow of drain water to the drain hole is provided on the rotating shaft. On the drain pan,
The vehicle air conditioner according to claim 3, further comprising a rotation stop device that stops the rotation of the rotation shaft. The vehicle air conditioner according to any one of claims 2 to 4, wherein the plate-shaped member is made of a rubber plate, a sponge, or a brush.   The first waterproof at a position ahead of one-third of the length of the drain pan or a position behind two-thirds of the length of the drain pan from the front wall surface toward the traveling direction of the drain pan. The vehicle air conditioner according to any one of claims 1 to 5, further comprising a backflow prevention wall having a height lower than either the wall or the second waterproof wall.

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