KR101238658B1 - Center mounting type air conditioner for vehicle - Google Patents

Abstract

The present invention relates to a center mounting type vehicle air conditioner, and more particularly, an evaporator is installed on an upstream side of a double blower wheel, and a bypass passage is formed on a wall surface of a scroll case in contact with an air passage inside the air conditioner. Accordingly, the present invention relates to a center mounting type vehicle air conditioner, which has a reduced height and width size, which enables a more compact design, increases the air volume, significantly reduces noise, and reduces a mounting space.

Accordingly, the present invention, the scroll case 110 having the discharge port 116, the internal and outdoor air intake 122 is installed on the inlet 114 side of the scroll case 110, the opening degree is adjusted by the intake door 130 Intake duct 120 having a) (124), a dual with a first wheel 142 and a second wheel 144 is rotatably embedded in the scroll case 110 and to suck and blow air in both directions Blower 100 having a blower wheel 140 and a motor 150 for rotating the double blower wheel 140, and the inlet 410 is connected to the discharge port 116, the plurality of openings are respectively adjusted to the outlet The air discharge case 430 is installed in the air conditioning case 400 and the evaporator 200 is installed on the air passage communicating the air discharge vent 430 from the internal and external air intake 122 (124) and In the center mounting type vehicle air conditioning apparatus including a heater core 300, the evaporator 200 A portion of the air sucked from the intake duct 120 is provided on the wall surface of the scroll case 110 which is installed upstream of the double blower wheel 140 and is in contact with the air passage inside the air conditioning case 400. At least one bypass passage 180 for bypassing and suctioning the second wheel 144 of the blower wheel 140 to which the motor 150 is coupled is formed, and the bypass passage 180 is The cut-off area 118 where the scroll 112 and the discharge port 116 of the scroll case 110 are formed has a predetermined size along the circumference of the wall of the scroll case 110. It is done.

Center mounting type, air conditioning unit, blower, double blower wheel, bypass passage, evaporator

Description

CENTER MOUNTING TYPE AIR CONDITIONER FOR VEHICLE}

1 is a side cross-sectional view showing an example of a conventional center mounting type vehicle air conditioner;

2 is a plan sectional view showing an example of a blower applied to a conventional center mounting type vehicle air conditioner;

3 is a perspective view showing another example of a blower applied to a conventional center mounting type vehicle air conditioner;

4 is a view for explaining a blowing structure in the blower of FIG. 3;

5 is a perspective view showing a center mounting type vehicle air conditioner according to the present invention;

FIG. 6 is a perspective view showing a state in which the intake duct is separated by a center mounting type vehicle air conditioner viewed from the side where the intake duct is installed in FIG. 5;

7 is a cross-sectional view taken along the line A-A in FIG. 5;

FIG. 8 is a cross-sectional view taken along the line B-B in FIG. 7.

<Explanation of symbols for the main parts of the drawings>

100: blower 110: scroll case

112: scroll portion 114: entrance of the scroll case

116 discharge port 118 cut-off area

120: intake duct 122: air intake

124: outside air intake 126: drain

130: intake door 140: double blower wheel

142: first wheel 144: second wheel

146: Hub Plate

150: motor 154: support plate

156: vent 160: motor housing

180: bypass passage 200: evaporator

250: filter

300: heater core 400: air conditioning case

410: inlet of the air conditioning case 430: air discharge vent

432: door

The present invention relates to a center mounting type vehicle air conditioner, and more particularly, an evaporator is installed on an upstream side of a double blower wheel, and a bypass passage is formed on a wall surface of a scroll case in contact with an air passage inside the air conditioner. Accordingly, the present invention relates to a center mounting type vehicle air conditioner, which has a reduced height and width size, which enables a more compact design, increases the air volume, significantly reduces noise, and reduces a mounting space.

In order to increase the efficiency of the interior space of the vehicle, compact and miniaturization of the vehicle air conditioner is required. In response to this demand, the semi-center type in which the evaporator unit and the heater core unit are integrated is conventionally required. -Center Type) Vehicle air conditioners have been mainly used.

However, in recent years, the development of the center mounting type vehicle air conditioner in which the blower unit, the evaporator unit, and the heater core unit are integrated is increasing. An example of such a center mounting type vehicle air conditioner is shown in FIG. 1.

The center mounting type vehicle air conditioner of FIG. 1 includes: a blower 10 having a blower wheel 14a; An air conditioner case 40 having an inlet connected to the blower 10 and a plurality of air discharge vents 42 each having an opening degree adjusted at an outlet thereof; An evaporator 20 and a heater core 30 embedded in the air conditioning case 40; And, it comprises at least one temperature control door 44 for adjusting the opening degree of the cold air passage (P1) and the warm air passage (P2) of the air conditioning case (40).

Therefore, the air sucked by the blower 10 and blown flows through the inside of the air conditioning case 40. At this time, the air passes through the evaporator 20 and the air is controlled by the temperature control door 44. By bypassing the heater core 30 flows in the cold air state or heat exchange with the warmth while passing through the heater core 30, and then discharged into the vehicle cabin through the air discharge vent 42 to cool and heat the room .

Such a center mounting type vehicle air conditioner may be classified into three types according to the structure of the blower 10 that sucks air and blows the air to the air conditioning case 40.

First, a blower having a structure in which air is sucked in both directions is shown. As shown in FIG. 2, the blower 10a includes two scroll cases 11a and 11a; Two intake ducts (12a, 12a) connected to the outside of each scroll case (11a) to suck the inside or outside air; A motor 13a installed between the scroll cases 11a; And two blowing wheels 14a and 14a connected to shafts drawn out to both sides of the motor 13a and embedded in the scroll cases 11a.

Therefore, according to the opening degree adjustment of the not shown doors installed in the intake ducts 12a, the inside or outside air is sucked into both sides of the blower 10a to pass through each scroll case 11a of the air conditioning case 40. It can be blown inside.

However, in the center mounting type vehicle air conditioner to which the blower 10a of FIG. 2 is applied, its performance is excellent in terms of air volume and noise. It is disadvantageous in miniaturization and miniaturization.

In addition, since the front surface of the vehicle air conditioner, that is, the front surface of the blower 10a does not form a vertical plane and the upper portion protrudes toward the front, when the vehicle air conditioner is mounted on the rear of the dash panel of the vehicle, the mountability is poor. Not only that, there is a problem that takes up a lot of mounting space.

Another example of the blower having a structure in which air is sucked in both the right and left directions is the blower 10b illustrated in FIG. 3.

The blower 10b is rotatably embedded in one scroll case 11b, an intake duct 12b connected to the scroll case 11b to suck in air or outside air, and the scroll case 11b. And a double blower wheel 14b and a motor 13b for rotating the double blower wheel 14b.

As shown in FIG. 4, the double blower wheel 14b includes two wheels 15b and 16b on both sides of a hub plate 17b to which the motor 13b is connected.

In the blower 10b of FIG. 3 as described above, the size of the blower 10b of FIG. 3 can be reduced compared to the blower 10a of FIG. 2 by providing one scroll case 11b. There is a good advantage.

By the way, in the blower 10b of FIG. 3, although the structure which inhales and blows air to both sides is applied, when air is inhaled by the wheel 16b by the side of the motor 13b, it is shown in FIG. As described above, since interference with air sucked into and blown by the wheels 15b and 16b occurs, there is a problem in that noise is severely generated.

On the other hand, although not shown here, it is possible to consider the application of a blower equipped with one blowing wheel, in this case, advantageous in terms of noise, but there is a disadvantage in terms of size and air volume.

In the conventional air conditioner provided with the above blower wheels, both the evaporator 20 and the heater core 30 are installed vertically on the downstream side of the blower wheel 14a. In particular, the evaporator 20 Because of the size of the air conditioning case 40, the size of the height and width direction on the side is increased and the internal structure is also complicated, there was a problem that compactness is difficult.

An object of the present invention for solving the above problems is to provide a bypass passage on the wall surface of the scroll case in contact with the air passage inside the air conditioning case while installing the evaporator upstream of the double blower wheel, It is to provide a center mounting type vehicle air conditioner that can be reduced in size in the width direction to allow a more compact design, increase the air volume, significantly reduce noise and reduce the installation space.

The present invention for achieving the above object, a scroll case having a discharge port, an intake duct having an internal and external air intake opening is installed on the inlet side of the scroll case and the opening degree is adjusted by the intake door, the rotation in the scroll case A blower having a dual blower wheel having a first wheel and a second wheel and a motor for rotating the double blower wheel, and possibly having an inlet connected to the outlet, The air conditioning case is provided with a plurality of air discharge vents are controlled opening degree, and the center mounting type vehicle air conditioner comprising an evaporator and a heater core installed on the air passage communicating the air discharge vents from the internal and external air intake The evaporator is installed upstream of the double blower wheel, and the air inside the air conditioning case. On the wall surface of the scroll case in contact with the passage, at least one bypass passage for bypassing a portion of the air sucked from the intake duct to the second wheel of the side of the dual blower wheel is coupled is formed, the said The bypass passage may be formed to have a predetermined size along the circumference of the wall of the scroll case from a cut-off region where the scroll portion and the discharge port of the scroll case meet.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Repeated description of the same parts as in the prior art will be omitted.

FIG. 5 is a perspective view showing a center mounting type vehicle air conditioner according to the present invention, and FIG. 6 is a perspective view showing a state in which the intake duct is separated as a center mounting type vehicle air conditioner viewed from the side where the intake duct is installed in FIG. 5. 7 is a cross-sectional view taken along the line AA in FIG. 5, and FIG. 8 is a cross-sectional view taken along the line BB in FIG. 7.

As shown, the center mounting type vehicle air conditioner according to the present invention, which is installed on the rear side of the dash panel of the vehicle, a blower 100, an air conditioning case 400 connected to the blower 100, The evaporator 200 and the heater core 300 are installed on the air passage communicating the air discharge vent 430 of the air conditioning case 400 from the internal and external air intakes 122 and 124 of the blower 100. It is configured to include.

The blower 100 is installed on the scroll case 110 having a discharge port 116 connected to the inlet 410 of the air conditioning case 400 and the inlet 114 of the scroll case 110. Intake duct 120 having internal and external air intake openings 122 and 124 whose opening degree is controlled by the intake door 130 and rotatably embedded in the scroll case 110 and sucking air in both directions It comprises a double blower wheel 140 is formed to blow, and a motor 150 for rotating the double blower wheel 140.

The front surface of the blower 100 is preferably formed in a vertical plane as shown in FIG.

In addition, the double blower wheel 140 may have a hub plate 146 connected to the shaft 152 of the motor 150 and a first wheel 142 installed at both sides of the hub plate 146. ) And the second wheel 144. The shaft 152 of the motor 150 passes through the second wheel 144 and is coupled to the hub plate 146.

The evaporator 200 is installed upstream of the dual blower wheel 140, that is, the evaporator 200 is installed vertically in the intake duct 120, but has a large surface (a surface through which air passes). It is installed to be perpendicular to the rotation axis 152 of the motor 150 of.

Here, the evaporator 200 is installed between the internal and external air suction ports 122 and 124 and the double blower wheel 140, and the internal and external air suction ports 122 and 124 which are upstream of the evaporator 200. The filter 250 is installed between the evaporator 200 and the evaporator 200 to remove impurities from the flowing air.

In addition, the heater core 300 is installed horizontally in the downstream air-conditioning case 400 of the double blower wheel 140, the wide surface (surface through which air passes) the motor 150 of the double blower wheel 140 It is installed to be parallel to the rotating shaft 152. Here, the heater core 300 may be installed completely horizontally, but may be installed at an angle as shown in the drawing.

On the other hand, the evaporator 200 is installed vertically and the heater core 300 is installed horizontally, the installation direction of the evaporator 200 and the heater core 300 is the direction when mounting the air conditioner to the vehicle It is based on.

In addition, a drain portion 126 is formed at a lower side of the intake duct 120 provided with the evaporator 200 so as to discharge the condensed water discharged from the evaporator 200 to the outside.

In addition, as shown in FIG. 8, the intake air inlet 122 is installed to penetrate in the direction of the central axis of the scroll case 110, and the outside air intake 124 is in the radial direction of the scroll case 110. It is installed to communicate with the air intake 122 and the scroll case (110).

In addition, the intake door 130 for adjusting the opening degree of the internal and external air intakes 122 and 124 includes a curved plate 132 and arm plates 134 provided at both ends of the curved plate 132. It is preferably formed in a dome type (Dome Type) structure, it is made to adjust the opening degree of the internal and external air intake 122, 124 according to the angle of rotation. Meanwhile, reference numeral 136 denotes a hinge portion for pivotably coupling the arm plate 134 of the domed intake door 130 to the intake duct 120.

Of course, although the dome-shaped door is installed as the intake door 130 in the drawing, various types of doors may be used. In addition, the intake door 130, as well as the temperature control door 420, the door 432, and the like, which are described below, are provided by an actuator (not shown) and a cam (not shown) installed outside the air conditioning case 400. It works.

In addition, a motor housing 160 in which the motor 150 is installed is installed at the opposite side of the scroll case 110 where the intake duct 120 is installed. The interior of the motor housing 160 and the interior of the intake duct 120 communicate with each other by at least one bypass passage 180.

The bypass passage 180 is formed on the wall surface of the scroll case 110 in contact with the air passage in the air conditioning case 400, which is a dead space in the air conditioning case 400, Some of the air sucked from the intake duct 120 is bypassed to the second wheel 144 side of the dual blower wheel 140 to which the motor 150 is coupled to be sucked.

Here, the bypass passage 180 may be formed from the cut-off region 118 where the scroll 112 and the discharge port 116 of the scroll case 110 meet. A certain size is formed along the circumference of the wall.

In addition, the motor 150 is provided with a support plate 154 at a predetermined distance from the end of the second wheel 144 to be coupled / fixed to the side of the scroll case 110, the support plate ( In the 154, a plurality of vent holes 156 communicating the inside of the motor housing 160 and the inside of the second wheel 144 are formed.

Meanwhile, the bypass passage 180 described above may be formed in various shapes around the scroll case 110 according to the internal structure of the air conditioning case 400.

Accordingly, the inside of the intake duct 120 communicates with the inside of the second wheel 144 through the bypass passage 180, the motor housing 160, and the vent holes 156, and thus the air intake 122. Or some of the air sucked into the intake duct 120 through the outside air inlet 124 may flow into the inside of the first wheel 142 through the inlet 114 of the scroll case 110, and the rest of the air. Air may flow into the second wheel 144 through the bypass passage 180, the motor housing 160, and the vent holes 156.

As such, the air flowing into the first wheel 142 and the second wheel 144 of the double blower wheel 140 is discharged radially according to the rotation of the double blower wheel 140, It is blown into the air conditioning case 400 through the discharge port 116.

On the other hand, in Figure 7, reference numeral 420 denotes a temperature control door for controlling the amount of air passing through and the air passing through the heater core 300 of the air blown from the double blower wheel 140, the air conditioning At the outlet of the case 400, a plurality of air discharge vents 430 whose opening degrees are adjusted by respective doors 432 are installed. Of course, although the temperature control door is shown as a domed door in the figure, it is possible to install a variety of doors in addition to the domed door.

Hereinafter, the operation of the center mounting type vehicle air conditioner according to the present invention configured as described above will be described.

Center mounting type vehicle air conditioner according to the present invention, for example, is installed in the space behind the dash panel of the vehicle, because the front surface of the blower 100 forms a vertical plane like the vertical surface of the dash panel, it can be easily mounted on the vehicle In addition, the mounting space can be reduced.

First, when the blower 100 and the motor 150 are driven by the operation of the vehicle air conditioner, the double blower wheel 140 connected to the shaft 152 of the motor 150 rotates inside the scroll case 110. The inside or outside air is sucked into the intake duct 120 through the inside air suction port 122 or the outside air suction port 124 by the suction force.

The air sucked into the intake duct 120 passes through the evaporator 200 after the impurities are removed while passing through the filter 250, where the air passing through the cooling and heating modes is selectively cooled. .

Subsequently, some of the air selectively cooled while passing through the evaporator 200 flows through the inlet 114 of the scroll case 110 into the first wheel 142 of the dual blower wheel 140. The remaining air flows into the second wheel 144 of the dual blower wheel 140 through the bypass passage 180, the motor housing 160, and the vent holes 156.

Air flowing into the first wheel 142 and the second wheel 144 of the double blower wheel 140 is discharged in the radial direction of the double blower wheel 140, and then the discharge port of the scroll case 110 ( 116 is blown into the air conditioning case 400.

The air blown into the air conditioning case 400 is changed to warm or cold by passing through or bypassing the heater core 300 according to the opening degree of the temperature control door 420 in the cooling and heating mode. The air converted into warm or cold air is discharged into the vehicle interior through the air discharge vent 430 opened according to the air discharge mode, thereby cooling or heating the vehicle interior.

According to the present invention, a portion of the air sucked into the intake duct 120, the bypass passage 180 is formed on the wall surface of the scroll case 110 in contact with the air passage in the air conditioning case 400 Since the air flows into the second wheel 144 by bypass through the second blower wheel 144, the flow of the air sucked into the second wheel 144 passes through the first wheel of the double blower wheel 140. It is not affected by the flow of air discharged radially from 142 and second wheel 144.

On the other hand, the present invention is a variety of air conditioning mode (defrost mode, face mode, floor mode, mix mode, birebal according to various control methods of the doors 432 installed in the temperature control door 420 and the air discharge vent 430) Mode and the like, and the air conditioning mode is well known, and thus detailed description thereof will be omitted.

According to the present invention, by installing the evaporator upstream of the double blower wheel, the structure of the air conditioning case is simplified, as well as the height and width direction is reduced in size, it is possible to design a more compact air conditioner, The front surface is formed in the vertical plane can also reduce the mounting space of the air conditioner.

In addition, by forming a bypass passage on the wall surface of the scroll case in contact with the air passage inside the air conditioning case, which is a dead space in the air conditioning case, a part of the air sucked into the intake duct is bypass passage. Bypass flows through the second wheel of the dual blower wheel through the air flow and the flow of air sucked into the second wheel by the flow of air discharged radially from the first wheel and the second wheel of the double blower wheel Since it is not affected, not only is the air volume significantly increased as compared with the prior art, but also the noise is significantly reduced.

Claims (5)

Scroll case 110 having a discharge port 116, the internal and external air intake 122, 124 is installed on the inlet 114 side of the scroll case 110, the opening degree is adjusted by the intake door 130 Dual intake duct 120 having a first intake duct 120, rotatably embedded in the scroll case 110 and having a first wheel 142 and a second wheel 144 to suck and blow air in both directions. And a blower (100) having a motor (150) for rotating the double blower wheel (140); The air inlet case 400 is connected to the inlet 410 to the discharge port 116, and a plurality of air discharge vents 430 are installed at the outlet, respectively. In the center mounting type vehicle air conditioning apparatus including an evaporator 200 and a heater core 300 are installed on the air passage communicating the air discharge vent 430 from the internal and external air intakes 122 and 124. , The evaporator 200 is installed upstream of the double blower wheel 140, On the wall surface of the scroll case 110 in contact with the air passage in the air conditioning case 400, the side of the motor 150 of the double blower wheel 140 is coupled to a portion of the air sucked from the intake duct 120 At least one bypass passage 180 is formed to bypass the second wheel 144 to be sucked, The bypass passage 180 is formed around the wall surface of the scroll case 110 from a cut-off region 118 where the scroll portion 112 and the discharge port 116 of the scroll case 110 meet. Center mounting type vehicle air conditioning apparatus, characterized in that formed along a predetermined size. delete The method of claim 1, On the opposite side of the scroll case 110 where the intake duct 120 is installed, the motor 150 is embedded and communicates with the intake duct 120 through the bypass passage 180. ) Is installed, and the motor 150 is provided with a support plate 154 having a plurality of vent holes 156 for communicating the interior of the motor housing 160 and the second wheel 144. Center mounting type vehicle air conditioning system. The method of claim 1, The evaporator 200 is installed in the intake duct 120, the center mounting type vehicle air conditioner, characterized in that the wide surface is installed to be perpendicular to the rotation axis 152 of the motor 150 of the double blower wheel 140. . The method of claim 1, The heater core 300 is installed horizontally in the downstream air-conditioning case 400 of the double blower wheel 140, the wide surface is installed to be parallel to the rotation axis 152 of the motor 150 of the double blower wheel 140. Center mounting type vehicle air conditioning apparatus, characterized in that the.

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