KR101578096B1 - Air conditioner for vehicle - Google Patents

Abstract

The present invention relates to an air conditioner for a vehicle, and more particularly, to an air conditioner including a defrost vent, a face vent, a floor vent, and a defrost door for opening and closing the vent, a face door, and a floor door; An evaporator and a heater core installed inside the air conditioning case; A cold air flow path for bypassing the heater core and a warm air flow path passing through the heater core; Wherein the floor door comprises a first rotating shaft and first and second plate-shaped flaps connected to both sides of the rotating shaft; And the first flap guides the floor airflow so as to extend as the floor door rotates to a position where the floor vent is opened.

According to the present invention, the floor door is structurally improved in the form of a center pivot, and a close contact portion is formed in the warm air flow passage according to a mode change. When the vent door is in the vent mode, It is possible to prevent the leakage of the warm air when the floor door is opened by attaching the leak preventing member to the close contact portion while preventing the decrease in the air flow amount of the vent flow path.

Floor door, mix mode, bi-level mode, leak prevention member

Description

TECHNICAL FIELD [0001] The present invention relates to an air conditioner for an automobile,

The present invention relates to a vehicle air conditioner, and more particularly, to a vehicle air conditioner having a center pivot type floor door having an eccentric shaft for selectively performing a role of a hot air guide for improving air mixing performance according to a discharge mode, The present invention relates to an improved air conditioner for a vehicle.

Generally, a vehicle air conditioner is a vehicle interior product installed for the purpose of ensuring the front and rear visibility of a driver by removing air from the windshield during rainy or winter season, or by cooling or heating the interior of the vehicle during the summer or winter season Such an air conditioner is usually equipped with a heating device and a cooling device at the same time so as to selectively introduce outside air or indoor air, and then the air is heated or cooled to blow air into the inside of the vehicle to cool, heat or ventilate the inside of the vehicle.

Such an air conditioner is characterized in that, in accordance with the independent structure of the blower unit, the evaporator unit, and the heater core unit, the three-piece type in which the three units are independently provided, the evaporator unit and the heater core unit are incorporated in the air conditioning case, A semi-center type provided as a separate unit, and a center mounting type in which the above-mentioned three units are all incorporated in a cooperating case.

1, a defrost vent 12, a face vent 13, and a floor vent 14, which are air outlets, are formed in the air conditioning case 10, An evaporator 2 and a heater core 3 are provided on the air flow path inside the air conditioning case 10 and a tamper door 18 is installed between the heater core 3 and the evaporator 2 so as to control cold air and hot air. do.

Thus, the air blown from the blower 20 is discharged to the windshield of the vehicle by the defrosting vent 12 or is discharged toward the face of the rider by the face vent 13, or is discharged by the floor vent 14 And discharged to the foot side.

At this time, a defrost door 15, a face door 16, and a floor door 17, which are mode doors for adjusting the opening degree, are provided in each vent.

The air conditioning apparatus having such a structure is provided with an air blowing mode (face mode, defrost mode, floor mode) for selectively discharging cold / warm air through the vents 12, 13 and 14 in accordance with the opening degree of the tempo door 17 A Bi-Level mode, and a Mix mode).

For example, in the mix mode, when the tempo door 17 is rotated to the neutral position so as to face the rear middle portion of the evaporator 2, the air introduced by the blower 20 is mixed in the mixing zone M, Is supplied through the defrost vent (12) and the floor vent (14) to the inside of the vehicle at a constant temperature.

In the bi-level mode, as in the case of the mix mode, when the tempo door 17 is rotated to the neutral position, the inflow air is divided into the car interior through the opened face vent 13 and the floor vent 14 .

However, in such a mix mode or a bi-level mode, the air temperature difference between the upper half and the lower half of the passenger compartment largely differs, thereby failing to provide an effective air conditioning effect in the passenger compartment.

That is, the temperature of the air passing through the evaporator 2 is approximately 5 ° C, while the temperature of the air passing through the heater core 3 through the evaporator 2 is approximately 30 ° C. It is impossible to mix cold and warm air at a proper ratio in the air mixing section M. In addition, the amount of cold air and warm air flowing along the case wall surface side is large, A large amount of cold air is discharged to the side of the defrost vent 12 or the face vent 13 while a large amount of warm air is discharged to the side of the floor vent 14 so that the difference in air temperature between the upper and lower halves of the car interior is constant So that it is impossible to provide a comfortable air conditioning effect to the driver or the passenger.

In order to prevent this, a method has been proposed in which the extension part 30, which is elongated at the end of the hot air flow path as shown in FIG. 1, The upper and lower temperature difference can be reduced in the bi-level mode and the mix mode as the length of the ventilation duct 30 is longer, but the vent ducts indicated by the dashed lines are reduced.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems of the prior art, and it is an object of the present invention to provide a vehicle air conditioner which is capable of minimizing a temperature difference between air discharged into an upper half and a lower half of a vehicle in a mix mode or a bi- There is a main problem in providing a vehicle air conditioner capable of maximizing the air conditioning performance by improving the mixing property.

According to an aspect of the present invention, there is provided an air conditioning case including a defrost vent, a face vent, a floor vent, and a defrost door for opening and closing the vent, a face door, and a floor door; An evaporator and a heater core installed inside the air conditioning case; A cold air flow path for bypassing the heater core and a warm air flow path passing through the heater core; Wherein the floor door comprises a first rotating shaft and first and second plate-shaped flaps connected to both sides of the rotating shaft; Wherein the first flap guides the floor airflow so as to extend as the floor door rotates to a position where the floor vent is opened.

At this time, a leakage preventing member is further provided on the lower surface of the first flap, and an insertion groove into which the leakage preventing member is inserted is formed at an end of the case wall surface provided between the heater core and the floor vent.

The leak preventing member is also characterized in that it is always kept inserted into the insertion groove in the entire section in which the first flap is rotated.

In addition, the leak preventing member and the insertion groove are also formed in a curved arc shape.

According to the present invention, the floor door is structurally improved in the form of a center pivot, and a close contact portion is formed in the warm air flow passage according to a mode change. When the vent door is in the vent mode, It is possible to prevent the leakage of the warm air when the floor door is opened by attaching the leak preventing member to the close contact portion while preventing the decrease in the air flow amount of the vent flow path.

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

4 is a perspective view of a floor door installed in a vehicle air conditioner according to the present invention. FIG. 5 is a perspective view of a vehicle air conditioner according to an embodiment of the present invention. FIG. 6 is a cross-sectional view showing air flow in the bi-level mode of the vehicle air conditioning system according to the present invention, and FIG. 7 is a sectional view showing the air flow in the floor mode of the automotive air conditioning system according to the present invention. FIG. 8 is a cross-sectional view showing an air flow in a mix mode of the automotive air conditioner according to the present invention, and FIG. 9 is a cross-sectional view showing an air flow in a defrost mode of the automotive air conditioner according to the present invention.

2 to 4, a vehicular air conditioning system according to the present invention includes an air conditioning case 100, and a deprost vent 210, a face vent, And a floor vent 250. An evaporator 110 and a heater core 120 are installed on the air flow path inside the air conditioning case 100. The heater core 120 and the heater core 120 A tamper door (270) is installed between the evaporators (110).

Thus, the air blown from the blower 130 is discharged toward the windshield of the vehicle by the defrost vent 210, or is discharged toward the face of the rider by the face vent 230, or is blown by the floor vent 250 And discharged to the foot side.

At this time, a defrost door 220, a face door 240, and a floor door 260, which are mode doors for opening degree adjustment, are provided in each vent.

The air conditioner having such a structure is provided with a blowing mode (face mode, defrost mode, floor mode, bi-level mode) for selectively discharging the cold / warm air through the vents 210, 230 and 250 according to the opening of the tempo door 270 Bi-Level) mode, and a Mix mode).

Herein, the present invention improves the structure of the floor door 260 to a kind of center pivot type door, and repeatedly performs or does not extend the hot air flow path depending on the open / closed state of the floor door 260, In the level mode and the mix mode, the vertical temperature difference is reduced, and the air volume in the vent mode is configured to be sufficiently secured without reducing.

For this, the floor door 260 according to the present invention is formed in a center pivot shape as shown in FIG. 4, for example, a first flap 264 and a second flap 264 on both sides of the rotation axis 262, 266 are integrally connected.

The second flap 266 functions as a main door for opening and closing the floor vent 250. The first flap 264 is connected to a warm air flow path through the heater core 120, So that the mixing efficiency in the mixing zone M can be further enhanced.

In this case, the end portion of the first flap 264 performs the same function as the existing extension portion. However, unlike the conventional method, the length of the warm air flow path is selectively long and shortened .

In particular, the second flap 266 should be formed longer than the first flap 264 in consideration of its function.

That is, the end of the first flap 264 is configured to function to extend the air flow path only when the floor door 260 is opened.

When the first flap 264 protrudes while being rotated to extend the length of the warm air flow path, a gap is generated between the first flap 264 and the case wall 102 to cause leakage of warm air A leakage preventing member L is attached to the lower surface of the first flap 264 to prevent the leakage preventing member L from being inserted into the case wall 102. At the end of the case wall surface 102, 104 are preferably formed.

In this case, it is preferable that the leakage preventing member L is formed to be curved in an arc shape, and the insertion groove 104 should also be formed so as to correspond to the shape of the leakage preventing member L, L should not be released from the insertion groove 104 but remain caught in the first flap 264 when the first flap 264 protrudes to the maximum extent so that leakage of warm air (hot air is blown directly under the floor door without mixing) So that it can be prevented from flowing into the floor vent.

In other words, the leak preventing member L is drawn out from the insertion groove 104 according to the operation of the first flap 264, but is not always detached from the insertion groove 104 but remains in the inserted state.

In this case, it is more preferable that the leakage preventing member L is formed in the form of a thin film or a rubber plate to further smooth the operation of the leakage preventing member L.

As a result, in the vent mode, the end portion of the first flap 264, that is, the tight fitting portion 268 (see FIG. 4) functioning as an extension portion is closely adhered to the end portion of the case wall surface 102 The ventilation flow path is not reduced and the ventilation airflow can be sufficiently secured. In the bi-level mode or the mix mode, the adhered portion 268 protrudes to serve as a conventional extension portion as shown in FIG. 3, The mixing efficiency in the mixing zone M is improved and the temperature difference between the discharged air and the air can be minimized.

The first flap 264 and the second flap 266 are formed to be bent at an acute angle toward the side where the leak prevention member L is present with the rotation axis 262 as a center, 260 and the floor door 260 when the floor door 260 is closed so that the vent hole can be sufficiently secured to the case wall 102 when the floor door 260 is closed so that the vent flow path can be sufficiently secured Is more preferable.

The present invention having such a configuration has the following operational relationships according to each mode.

5, the defrost door 220 and the floor door 260 are kept closed, and only the face door 240 is opened. Therefore, the cold air and the warm air are supplied to the face vent 230 .

At this time, the contact portion 268 formed on the first flap 264 of the floor door 260 maintains a state of being in close contact with the end of the case wall surface 102, so that the function of extending the hot air flow path is not performed.

6, the de-frost door 220 is closed and the face door 240 and the floor door 260 are in an open state. Therefore, the air is discharged through the open face vent 230 and the floor vent 260, (250) into the vehicle room.

In this case, the floor door 260 maintains a state in which the tight fitting portion 268 formed on the first flap 264 protrudes to the maximum, so that the floor door 260 functions as a conventional extension portion, Since the mixing efficiency is improved by maximizing the mixing zone M, the discharge temperature difference between the upper and lower parts is reduced.

7, since the de-frost door 220 and the face door 240 are closed and only the floor door 260 is opened, air flows into the vehicle room through the opened floor vent 250 And is discharged.

At this time, the floor door 260 maintains a state in which the tight fitting portion 268 formed on the first flap 264 protrudes to the maximum, so that the floor door 260 functions as a conventional extension portion to guide the warm air flow path long, Since the mixing efficiency is improved by maximizing the zone (M), the upper and lower temperature difference to be discharged is reduced.

8, only the face door 240 is closed, the de-frost door 220 is opened halfway, and the floor door 260 is fully opened. Therefore, the introduced air is introduced into the mixing zone M And then supplied to the inside of the vehicle through the deprost vent 210 and the floor vent 250 at a constant temperature.

Also in this case, since the floor door 260 is in the open state, the close contact portion 268 formed in the first flap 264 functions as an extension portion for extending the hot air flow path.

9, since only the face door 240 is closed and the de-frost door 220 and the floor door 260 are completely opened, the introduced air flows into the mixing zone M And then supplied to the inside of the vehicle through the deprost vent 210 and the floor vent 250 at a constant temperature.

Also in this case, since the floor door 260 is in the open state, the close contact portion 268 formed in the first flap 264 functions as an extension portion for extending the hot air flow path.

As described above, the floor door according to the present invention maximizes the mixing zone by performing the function of extending the warm air flow while the first flap is moved in and out according to the mode, thereby achieving the effect of reducing the vertical temperature difference .

1 is a cross-sectional view showing a vehicle air conditioning apparatus according to the prior art,

2 and 3 are exemplary sectional views of a vehicle air conditioning system according to the present invention,

4 is an exemplary perspective view of a floor door installed in a vehicle air conditioning system according to the present invention;

FIG. 5 is a sectional view showing the air flow in the vent mode of the automotive air conditioner according to the present invention,

FIG. 6 is a sectional view showing an air flow in a bi-level mode of a vehicle air conditioner according to the present invention,

FIG. 7 is a sectional view showing an air flow in a floor mode of a vehicle air conditioner according to the present invention,

FIG. 8 is a sectional view showing an air flow in a mix mode of a vehicle air conditioner according to the present invention,

9 is a sectional view showing the air flow in the defrost mode of the automotive air conditioner according to the present invention.

DESCRIPTION OF REFERENCE NUMERALS

100 .... air conditioning case 102 .... case wall

110 .... evaporator 120 .... heater core

210 .... Defrost Bent 220 .... Defrost door

230 .... Face Vent 240 .... Face Door

250 .... Floor Vents 260 .... Floor Doors

262 .... rotation axis 264 .... first flap

266 .... second flap 268 .... close contact

Claims (4)

An air conditioning case 100 including a defrost vent 210, a face vent 230, a floor vent 250 and a defrost door 220 for opening and closing these vents, a face door 240 and a floor door 260, Wow; An evaporator 110 and a heater core 120 installed in the air conditioning case 100; A cold air flow path for bypassing the heater core (120), and a hot air flow path passing through the heater core (120), the apparatus comprising: The floor door 260 includes a first rotating shaft 262 and first and second plate flaps 264 and 266 connected to both sides of the rotating shaft 262, The first flap 264 guides the floor ventilation duct to extend as the floor door 260 rotates to a position for opening the floor vent 250, A leakage preventing member L is further provided on the lower surface of the first flap 264, Wherein an insertion groove (104) is formed in an end of the case wall surface (102) provided between the heater core (120) and the floor vent (250) to insert the leakage preventing member (L). delete The method of claim 1, Characterized in that the leakage preventing member (L) maintains the inserted state in the insertion groove (104) at all times during the entire section in which the first flap (264) is rotated. The method of claim 1, Wherein the leakage preventing member (L) and the insertion groove (104) are formed in a curved arc shape.

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