KR20180117442A - Air conditioning device for vehicles - Google Patents

Abstract

The present invention relates to an air conditioning apparatus for a vehicle, wherein a cooling heat exchanger is installed on the upstream of a blower, such that a compact air conditioning apparatus is realized, and condensate or external rainwater is prevented from entering a cooling hole of a blower motor to prevent quality degradation. According to one embodiment of the present invention, the air conditioning apparatus for a vehicle comprises: an air conditioning case having the air passage formed therein and having a plurality of air outlets formed on an outer surface to communicate with the air passage; a blower installed inside the air conditioning case to blow indoor and outdoor air sucked through an air inlet; the cooling heat exchanger installed on the upstream of the blower; and a plurality of mode doors to open/close the air outlets. The blower is disposed to make the rotary shaft thereof parallel to a direction of the air flowing from the air inlet and the cooling hole for cooling a motor of the blower is formed at a higher position than a rotary shaft of the motor.

Description

[0001] Air conditioning device for vehicles [

More particularly, the present invention relates to a vehicle air conditioner, and more particularly, to an air conditioner for a cooling air conditioner which is provided on the upstream side of a blower to reduce the size of the air conditioner and prevent condensed water or external rainwater from being mixed into the cooling hole of the blower motor, To a vehicle air conditioner.

Generally, the air conditioner for a vehicle is an automobile interior which is installed for the purpose of securing the front and rear view of the driver by removing the casting which is to be cooled or heated in the summer or winter season, or in case of rain or windshield during rainy or winter season Such an air conditioner usually has a heating device and a cooling device at the same time, and selectively introduces outside air or indoor air, and then heats or cools the air and blows air into a vehicle interior to cool, heat or vent the vehicle interior.

Hereinafter, referring to FIGS. 1 and 2, a conventional center mounting type air conditioner will be briefly described as an example.

1, the conventional air conditioner 1 includes an air conditioner case 10 having an air passage 11 formed therein, an evaporator 2 and a heater 3 which are sequentially installed in the air conditioner case 10, A plurality of mode doors (18) provided on the side of the plurality of vents (15), (16) and (17), and a plurality of mode doors 19).

Outside air inflow ports 12 and 13 are formed on the inlet side of the air conditioner case 10 on both sides thereof and are selectively opened and closed by the inside and outside air switching door 14.

A blower 20 is installed on the upstream side of the evaporator 2 at the inlet side of the air conditioning case 10 so that the air sucked through the outside air inlet ports 12 and 13 is forcibly blown into the air passage 11 A deprost vent 15, a face vent 16 and a floor vent 17 are formed on the outlet side of the vehicle so as to be connected to a duct (not shown) connected to each outlet.

According to such a conventional air conditioner, the air sucked into the air conditioning case 10 by the operation of the blower 20 is cooled or heated in the process of selectively passing through the evaporator 2 and the heater core 3, The cooled or heated air is supplied to the passenger compartment through the vents 15, 16 and 17, thereby cooling or heating the passenger compartment.

2, the air that has selectively passed through the evaporator 2 and the heater core 3 depending on whether the tempo door 18 and a plurality of mode doors 19 are opened or closed is opened The defrost vent 15, the face vent 16, and the floor vent 17, respectively.

However, in the conventional air conditioner 1, the evaporator 2 and the heater core 3 are vertically installed on the downstream side of the blower 20, and in particular, due to the size of the evaporator 2, The size in the height direction and the width direction is increased and the internal structure is also complicated.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a heat exchanger for cooling, which is disposed on the upstream side of a blower to reduce the size of an air conditioning apparatus, and prevent condensation or external rainwater from being mixed into a cooling hole of a blower motor, And to provide a vehicle air conditioner capable of preventing air pollution.

According to the present invention, a cooling heat exchanger is disposed on the upstream side of the blower, and a cooling hole for cooling the blower motor is formed above the rotary shaft of the motor, whereby the refrigerant generated in the cooling heat exchanger (Condensate) or rainwater or the like from entering into the inside of the motor.

According to an aspect of the present invention, there is provided an air conditioner comprising: an air conditioning case having an air passage formed therein and having a plurality of air outlets communicating with the air passage; And a plurality of mode doors installed to open and close the plurality of air outlets, wherein the rotary shaft of the blower is connected to the heat exchanger of the blower, And a cooling hole for cooling the motor of the blower is formed at a position higher than a rotation axis of the motor.

The blower may include a motor coupled to one side of the air conditioning case through a flange and a wheel coupled to a rotation shaft of the motor and forcing the air while rotating on the air passage.

At this time, the cooling hole may be formed on or above the tangent line at the uppermost point of the hole through which the air is sucked by the blower.

In addition, the air conditioning case may include an inlet ring for guiding the air introduced through the air inlet to the inside of the wheel.

At this time, the cooling hole may be formed on or above the tangent line at the uppermost point of the inlet ring.

The cooling heat exchanger may be installed in a cooling heat exchanger module detachably coupled to the air conditioning case.

The air inlet may be coupled to the cooling heat exchanger module.

The cooling heat exchanger module may be detachably connected to the inlet of the blower.

A filter for removing impurities in the air may be provided between the air inlet and the cooling heat exchanger.

A drain for discharging the refrigerant discharged from the cooling heat exchanger to the outside may be provided between the cooling heat exchanger and the blower.

And an air supply line for supplying high-pressure air generated at the blower side may be connected to the drain portion.

Accordingly, the high-pressure air supplied by the air supply line is discharged from the cooling heat exchanger, and the refrigerant flowing into the drain portion can be pushed out and discharged.

Further, the apparatus may further include a heating heat exchanger provided on the downstream side of the blower.

The apparatus may further include a tempdoor disposed between the blower and the heat exchanger for heating to adjust the temperature of the air passing through the heat exchanger and the amount of air bypassing the heat exchanger.

According to the vehicular air conditioning system of the present invention, the cooling heat exchanger is vertically installed on the upstream side of the blower, the heating heat exchanger is horizontally installed on the downstream side of the blower, the air passage is formed to surround the blower, Is formed in the vertical direction of the blower, the size of the air conditioning case can be reduced by reducing the height and the size in the width direction.

Further, by forming a cooling hole for cooling the blower motor above the rotation axis of the motor, it is possible to prevent the refrigerant (condensed water) generated in the cooling heat exchanger or the rainwater flowing from the outside from being mixed into the inside of the motor So that the quality of the air conditioner can be prevented from deteriorating.

It should be understood that the effects of the present invention are not limited to the above effects and include all effects that can be deduced from the detailed description of the present invention or the configuration of the invention described in the claims.

1 is a perspective view showing a conventional air conditioner separated.
2 is a sectional view of Fig. 1;
3 is a perspective view illustrating a vehicle air conditioner according to an embodiment of the present invention.
Figure 4 is a perspective view of another side of Figure 3;
Figure 5 is a perspective view of another side of Figure 4;
Fig. 6 is a perspective view showing the interior of the automotive air conditioner of Fig. 3; Fig.
7A and 7B are sectional views of FIG. 3;
Figure 8 is an exploded perspective view of another side of Figure 5;

Hereinafter, a preferred embodiment of a vehicle air conditioning system of the present invention will be described with reference to FIGS. 3 to 8 attached hereto.

It is to be understood that both the foregoing description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention, and are not intended to limit the scope of the invention. But are merely illustrative of the elements recited in the claims.

In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the specification. Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements, not excluding other elements unless specifically stated otherwise.

3 is a perspective view of another side view of Fig. 3, Fig. 5 is a perspective view of another side view of Fig. 4, Fig. 6 is a perspective view of the vehicle air conditioner of Fig. Figs. 7A and 7B are cross-sectional views of Fig. 3, and Fig. 8 is an exploded perspective view of another side of Fig. 5. Fig.

3 to 6, the vehicle air conditioner according to the embodiment of the present invention is largely divided into the air conditioner case 100 and the air conditioner case 100, A blower 120, a heat exchanger module for heating, a heat exchanger module for cooling, and an air inlet 400.

An air passage 110 is formed in the air conditioning case 100 and a plurality of air discharge holes are formed on the outer surface of the air passage case 100 so as to communicate with the air passage 110.

A blower 120 for forcedly blowing the inside and outside air sucked through the air inlet 400 is installed in the air conditioning case 100. The blower 120 has a rotation axis of which is connected to the air inlet 400 May be arranged to be parallel to the direction in which they are introduced.

7A, the air passage 110 is formed in a scroll shape to surround the blower 120, and the plurality of air discharge openings are formed in the circumferential direction of the air passage 110 As shown in FIG. This is explained in detail below.

The blower 120 includes a motor 122 coupled to a side surface of the air conditioner case 100 through a flange 126 and coupled to a rotating shaft of the motor 122, And a wheel 124 for forcibly blowing air while blowing air. At this time, a bell mouth for guiding the air sucked through the air inlet 400 to the center of the wheel 124 is provided in the air conditioning case 100 on the upstream side of the wheel 124 .

Accordingly, when the air conditioner of the present invention is mounted on a vehicle, the rotation axis of the motor 122 is installed in parallel with the ground, so that the motor 122 can be separated immediately when servicing the motor, thereby improving serviceability.

On the other hand, when the motor 122 of the blower 120 is rotated, heat is generated due to friction between the commutator and the brush.

Accordingly, a cooling hole for cooling the motor 122 can be formed, and the heat generated by flowing the cooled air selectively into the motor 122 passes through the cooling hole through the cooling heat exchanger, .

Particularly, in the present invention, the cooling hole is formed above the rotation axis of the motor 122. That is, as shown in FIG. 7A, the cooling hole is located above the reference line A formed around the rotation axis of the motor 122.

In the air conditioner according to the present invention, as described later, a cooling heat exchanger is mounted on the upstream side of the blower 120, and the air passing through the cooling heat exchanger is sucked into the blower 120, (Condensed water) generated (discharged) from the heat exchanger for the refrigerant can be mixed together, so that the motor 122 may be restricted.

In addition, rainwater or the like outside the vehicle may flow into the blower 120 when the outside air flows through the air inlet 400.

Accordingly, by placing the cooling hole for allowing the air to flow into the motor 122 for cooling the motor to be located above the center of the blower 120, the coolant or the rainwater having a relatively higher density than the air is cooled downward And is not sucked into the cooling hole located on the upper side.

More preferably, the cooling holes may be formed on or above the tangent line at the uppermost point of the hole through which air is sucked into the blower 120. That is, as shown in FIG. 7A, it is formed near the tangential line B at a position located at the uppermost position of the air suction hole of the blower 120.

8, the air conditioning case 100 includes air introduced through the air inlet 400, that is, air that has been introduced through the air inlet 400 and has passed through the cooling heat exchanger 400, And an inlet ring 125 for guiding inward of the wheel 124.

The inlet ring 125 is formed to have a circular shape corresponding to the wheel 124. The inner circumferential surface of the inlet ring 125 is rounded toward the inner side of the wheel 124, To the inside of the wheel 124.

In this case, the cooling hole may be formed over the tangent line at the uppermost point of the inlet ring 125, or may be formed on the upper side thereof.

Likewise, the refrigerant does not flow through the cooling holes, passes through the cooling heat exchanger, and selectively cooled air flows into the blower motor 122 to be circulated, thereby cooling the motor.

Specifically, the air flow generated by the wheel 124 of the blower enters the blower motor 122 through the cooling hole due to a pressure difference, passes through the discharge hole again, and circulates inside. In this circulation process, the blower motor 122 heat-exchanges with the blowing air to release heat.

A heating heat exchanger is installed on the downstream side of the blower 120. A cooling heat exchanger is installed on the upstream side of the blower 120. The heating heat exchanger is detachably coupled to the air conditioning case 100 The cooling heat exchanger may be provided in a heat exchanger module for cooling, which is detachably coupled to the air conditioning case 100.

However, the present invention is not limited to this, and the cooling heat exchanger may be integrally fixed to the inside of the air conditioner case, and the heating heat exchanger may be installed in a separate module, But only the cooling heat exchanger may be installed in a separate module.

Hereinafter, the heating heat exchanger will be referred to as a heater core 220, and the cooling heat exchanger will be provided as an evaporator 320 in the heater core module 200 and the evaporator module 300, respectively. However, the present invention is not limited thereto, and the heating heat exchanger and the cooling heat exchanger can be any heat exchanger for heating and cooling, respectively.

6 and 7, the heater core module 200 has a structure in which the heater core 220 is mounted on the air passage 110 on the downstream side of the blower 120, And may be detachably coupled to a downstream side of the air conditioning case 100 so that a heat exchange surface (a surface through which air passes) may be installed parallel to the rotation axis of the motor 122 of the blower 120 .

That is, the heater core module 200 may be detachably coupled to the side surface of the air conditioning case 100 along the circumferential direction of the blower 120 in parallel with the rotation axis of the blower 120.

At this time, the heater core 220 may be installed horizontally or vertically as shown in the drawing.

The heater core module 200 may be bolted to the air conditioning case 100.

Accordingly, if redesign of the heater core is required to change the heating performance, the design can be easily changed, and the design cost and development time can be shortened. For example, in a warm country, the capacity of the heater core does not need to be large, so the heater core module can be separated to easily replace only the heater core in order to redesign the heater core to a small size.

The heater core module 200 includes an inlet passage 240 for introducing air from within the air conditioning case 100, specifically, from an air passage 110 formed in the air conditioning case 100, And a discharge passage 260 for discharging the air that has passed through the core 220 into the air conditioning case 100, specifically, into the air passage 110.

Correspondingly, the air conditioning case 100 is provided with a communication hole for communicating the inflow passage 240 and the discharge passage 260 of the heater core module 200 with the air passage 110 of the air conditioning case, respectively Respectively.

A first communication hole 112 for communicating the inflow passage 240 with the air passage 110 and a second communication hole 112 for communicating the discharge passage 260 and the air passage 110 The air flowing in the air passage 110 can be heat-exchanged through the heater core 220 selectively by the TEMP door 170 as described later.

4 to 6 and 8, the evaporator module 300 is configured such that the evaporator 320 is mounted on the upstream air passage 110 of the blower 120 with respect to the vertical direction So that the heat exchanging surface (surface through which the air passes) can be installed perpendicular to the rotation axis of the motor 122 of the blower 120, that is, And can be detachably coupled to the front surface or the rear surface facing each other.

At this time, the evaporator module 300 may be bolted to the air conditioning case 100.

The air inlet 400 may be coupled to the evaporator module 300 and the evaporator module 300 may be coupled to a side of the air conditioner case 100 that is coupled to the air conditioner case 100.

Accordingly, the evaporator module 300 is connected to the inlet port of the blower 120 so that the air introduced through the air inlet port 400 flows into the blower 120.

The air inlet 400 includes an outside air inlet 420 through which outside air flows and an inside air inlet 440 through which the inside air flows. The inside and outside air inlet ports 420 and 440 are selectively inserted into the inside of the air inlet 400 The inside / outside air switching door is rotatably installed. The inside / outside air switching door may be composed of various types of doors such as a dome-shaped door, and may be operated by an actuator and a cam (not shown) provided outside the air conditioning case 100.

A filter 360 for removing impurities from the air flowing upstream of the evaporator 320, that is, between the evaporator 320 and the air inlet 400 may be installed.

Accordingly, foreign matter introduced from the outside through the air inlet 400 can be filtered by the filter 360, so that foreign matter can be prevented from flowing into the blower 120 through the evaporator 320 have.

A drain portion 380 for discharging the refrigerant discharged from the cooling heat exchanger to the outside may be provided between the cooling heat exchanger and the blower 120.

8, the drain portion 380 is connected to the rear end of the cooling heat exchanger for discharging the condensed water discharged from the cooling heat exchanger to the outside, and is connected to the lower portion of the air conditioner case 100 A drain hole is formed toward the lower side to discharge the condensed water.

At this time, the drain portion 380 may be connected to an air supply line for supplying high-pressure air generated from the blower 120 side.

The high-pressure air generated by the blower 120 is supplied to the drain portion 380 through the air supply line, so that the refrigerant discharged from the cooling heat exchanger and flowing into the drain portion 380 It can be pushed out and discharged.

Therefore, the condensed water generated in the cooling heat exchanger can be discharged to the outside without flowing into the blower 120, and scattering of the condensed water can be prevented, thereby eliminating the odor and the cause of the failure of the parts.

The evaporator module 300 may include a joint flange 340 separably connecting refrigerant pipes one end of which is connected to the evaporator 320 and a dash panel of the vehicle .

Accordingly, when replacing and cleaning the evaporator, the evaporator and the dash panel are separated from each other without removing all of the refrigerant pipes connected to the evaporator and the dash panel, thereby separating only a part of the pipe connected to the evaporator side by removing the joint flange, It is possible to easily separate the evaporator without using the evaporator, thereby saving the AS cost and time.

In addition, noise may be generated in the process of sucking / blowing air during operation (rotation) of the wheel 124 of the blower 120. In the present invention, As the flange 126 and the evaporator 320 are installed, noise generated during operation of the wheel 124 is blocked without being exposed to the outside, thereby reducing the noise.

7A and 7B, the air sucked into the air conditioning case 100 through the air inlet 400 by the operation of the blower 120 is supplied to the evaporator 320 and the heater core 220, And then discharged through a plurality of air discharge openings.

The air passage 110 inside the air conditioning case 100 is formed in a scroll shape so as to surround the periphery of the blower 120 and the evaporator 320 and the heater core 220 are selectively So that air flows into the plurality of air discharge openings.

The plurality of air outlets are spaced apart from each other in the circumferential direction of the air passage 110. The floor vent 130 and the defrost vent 140 are disposed in order along the air flow direction in the air passage 110, And a face vent 160, as shown in FIG. Each of the vents may have a duct connected to each discharge port of the vehicle interior, and the cost can be reduced through the vent-duct integral structure.

At least one of the plurality of air outlets may be formed in a flow direction of the air flowing along the scroll shape of the air passage 110. In particular, in the present embodiment, the face vent 160 is connected to the air passage 110 in the flow direction of the air flowing along the scroll shape.

It is most effective to increase the air flow rate by forming the air outlet in the air flow direction because the increase of the air flow rate of the air outlet port can best control the temperature of the room and increase the air flow rate of the passenger.

Specifically, the face vent 160 may be formed to extend in a circumferential direction, that is, in a tangential direction, to an end of the air passage 110 for discharging air toward the face of a passenger, The air can be discharged to the side of the air conditioning case 100 through the air outlet 160.

The defrost vent 140 is formed in the vertical direction of the blower 120 facing the heater core 220 in the middle of the air passage 110 to discharge air toward the windshield of the vehicle So that the air can be discharged to the upper side of the air conditioning case 100 through the defrost vent 140.

The floor vent 130 is provided in the vicinity of the middle of the air passage 110, specifically, at a point where the heater core 220 ends, for discharging air toward the foot of a passenger. The depression vent 140, And may be formed in a direction that forms a vertical direction. However, the present invention is not limited to vertical but may be formed in a direction opposite to the face vent 160, so that the air can be discharged to the opposite side of the face vent 160 through the floor vent 130.

Ultimately, the plurality of air outlets are formed along the air flow direction in the air passage 110 so that the direction of the air is not rapidly changed so that the pressure resistance can be minimized when the air flows.

The amount of air passing through the heater core 220 and the amount of air to be bypassed among the air blown by the blower 120 can be selectively controlled between the blower 120 and the heater core 220, A tamper door 170 is provided to adjust the temperature.

The TEMP door 170 may be provided on the air conditioning case 100 or the heater core module 200. Specifically, the TEMP door 170 may include the inlet passage 240 of the heater core module 200 or the air conditioning case 100, As shown in FIG.

The TEMP door 170 is installed on the air conditioning case 100 so that the first communication hole 112 can be opened and closed so that the first communication hole 112 can be opened or closed Thereby selectively controlling whether or not the air in the air passage 110 flows into the heater core module 200.

A plurality of mode doors 180 are provided in the air conditioning case 100 to open and close the floor vent 130, the defrost vent 140 and the face vent 160, respectively. That is, the plurality of mode doors 180 may include a first mode door 181 for opening and closing the air directed to the floor vent 130, the defrost vent 140, and the face vent 160, A mode door 182 and a third mode door 183.

Each of the above-mentioned mode doors controls the amount of air discharged through each vent in various air conditioning modes such as a defrost mode, a face mode, a floor mode, a mix mode, and a bi-level mode.

As described above, according to the air conditioner of the present invention, when the indoor air or the outside air is sucked into the air conditioning case 100 through the air inlet 400 according to the operation of the blower 120, The impurities are removed through the evaporator 320 and selectively cooled according to the cooling and heating mode.

The air that has been selectively cooled while passing through the evaporator 320 is directed to the heater core 220 installed downstream of the blower 120. In the cooling mode, The air is passed through the heater core 220 and is heated. In the heating mode, the TEMP door 170 is opened and air is heated while passing through the heater core 220.

The air selectively heated by the heater core 220 is discharged to the inside of the vehicle after the amount of air discharged into each vent is adjusted by the plurality of mode doors 180 to be cooled and heated.

At this time, since the air passage 110 is formed in the shape of a scroll in the circumferential direction, the pressure resistance when the air flows can be minimized, so that the noise is reduced and the air volume is increased.

In addition, since the evaporator is vertically installed on the upstream side of the blower, the heater core is installed horizontally on the downstream side of the blower, the air passage is formed to surround the blower, and the defrost vent is formed in the vertical direction of the blower, The size of the case can be reduced by reducing the height and the width direction size.

The present invention is not limited to the above-described specific embodiment and description, and various changes and modifications may be made by those skilled in the art without departing from the scope of the present invention as claimed in the claims. And such modifications are within the scope of protection of the present invention.

100: air conditioning case 110: air passage
112: first communication hole 114: second communication hole
120: blower 122: motor
124: wheel 125: inlet ring
126: flange 130: floor vent
140: Difrost Vents 160: Face Vents
170: Temp door 180: Multiple mode doors
181: first mode door 182: second mode door
183: Third mode door 200: Heater core module
220: heater core 240: inlet passage
260: Discharge passage 300: Evaporator module
320: Evaporator 340: Joint flange
360: filter 380: drain part
400: air inlet 420: outside air inlet
440: Blow in inlet

Claims (14)

An air conditioning case in which an air passage is formed, and a plurality of air outlets communicating with the air passage are formed;
A blower installed in the air conditioning case and blowing air inside and outside through the air inlet;
A cooling heat exchanger installed upstream of the blower; And
And a plurality of mode doors installed to open and close the plurality of air outlets,
The rotating shaft of the blower is disposed so as to be parallel to the direction in which the air is introduced from the air inlet,
Wherein a cooling hole for cooling the motor of the blower is formed above the rotation shaft of the motor. The method according to claim 1,
The blower
A motor coupled to one side of the air conditioning case through a flange; And
A wheel coupled to a rotating shaft of the motor and forcing the air while rotating on the air passage;
And an air conditioner. 3. The method of claim 2,
Wherein the cooling hole is formed on or above a tangent line at an uppermost point of a hole through which air is sucked by the blower. 3. The method of claim 2,
Wherein the air conditioning case includes an inlet ring for guiding the air introduced through the air inlet to the inside of the wheel. 5. The method of claim 4,
Wherein the cooling hole is formed on or above a tangent line at an uppermost point of the inlet ring. 3. The method of claim 2,
Wherein the cooling heat exchanger is provided in a cooling heat exchanger module detachably coupled to the air conditioning case. The method according to claim 6,
And the air inlet is coupled to the cooling heat exchanger module. 8. The method of claim 7,
Wherein the cooling heat exchanger module is detachably connected to the intake port of the blower. 9. The method of claim 8,
And a filter for removing impurities in the air is provided between the air inlet and the cooling heat exchanger. 3. The method of claim 2,
And a drain for discharging the refrigerant discharged from the cooling heat exchanger to the outside is provided between the cooling heat exchanger and the blower. 11. The method of claim 10,
And an air supply line for supplying high-pressure air generated at the blower side is connected to the drain portion. 12. The method of claim 11,
Wherein the high pressure air supplied by the air supply line is discharged from the cooling heat exchanger to push out the refrigerant flowing into the drain portion to the outside. The method according to claim 1,
A heating heat exchanger installed on the downstream side of the blower;
Further comprising: 14. The method of claim 13,
A tempdoor installed between the blower and the heat exchanger for heating to regulate the temperature by regulating the amount of air passing through the heat exchanger and the amount of air bypassing the heat exchanger;
Further comprising:

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