KR20110024409A - Air conditioner for vehicle - Google Patents

Abstract

PURPOSE: A cooling device for a car is provided to maximize a mixing zone by improving hot channel effect by forming a bypass hole at one side of a floor door. CONSTITUTION: A cooling device for a car comprises a defrost vent(210), a face vent(230), a floor vent(250), a defrost door(220), a face door(240), and a floor door(260). The floor door is composed of a first flap and a second flap connected to both sides of a rotary shaft. A plurality of bypass holes is formed in the first flap.

Description

Automotive air conditioning unit {AIR CONDITIONER FOR VEHICLE}

The present invention relates to a vehicle air conditioner, and more specifically, to achieve the same effect as the hot channel through the combination of the vent door and the floor door without having a separate door or hot channel to reduce the temperature difference between the upper and lower, and reduce the manufacturing cost It relates to a vehicle air conditioner improved to be.

In general, the vehicle air conditioner is a vehicle interior that is installed for the purpose of securing the driver's front and rear view by removing the frost, such as cooling or heating the interior of the vehicle during the summer or winter, or being stuck in the windshield during the rain or winter. In addition, such an air conditioner is usually equipped with a heating device and a cooling device at the same time, and by selectively introducing the outside air or bet, the air is heated or cooled and blown into the interior of the vehicle to cool, heat or ventilate the vehicle interior.

According to the independent structure of the blower unit, the evaporator unit, and the heater core unit, the air conditioner includes a three-piece type in which the three units are independently provided, the evaporator unit and the heater core unit are built in the air conditioning case, and the blower unit is Semi-center type is provided as a separate unit, and all three units can be divided into a center mounting type that is built in the air conditioning case.

For example, referring to the air conditioner of the center mounting type illustrated in FIG. 1, an air discharge port, a defrost vent 12, a face vent 13, and a floor vent 14 is formed in the air conditioning case 10. An evaporator 2 and a heater core 3 are installed 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 to control cold and warm air. do.

Thus, the air blown from the blower 20 is discharged toward the windshield of the vehicle by the defrost vent 12 or discharged toward the face of the passenger by the face vent 13 or by the floor vent 14. It will be discharged to the foot.

At this time, each vent is provided with a defrost door 15, a face door 16, a floor door 17, which is a mode door for adjusting the opening degree.

The air conditioner having such a structure includes a blowing mode (face mode, defrost mode, floor mode) for selectively discharging cold / hot air through the vents 12, 13, and 14 according to the opening degree of the temporal door 17. , Bi-Level mode, Mix mode).

However, in the bi-level mode, as shown by the arrow of Figure 1, the hot wind does not rise to the top to meet the cold wind, flows into the floor vent 14, so the difference in temperature up and down occurs up to 25 ℃ This caused inconvenience in riding comfort.

In order to solve this problem, conventionally, a hot channel is added to reduce the temperature difference. However, a problem arises in that the cost increases due to the insertion of a separate hot channel, and the increase in the number of manufacturing labors decreases productivity.

The present invention was created in view of the above-described problems in the prior art, and the vent door and the floor door are met in the bi-level mode, thereby expanding the hot air flow path and maximizing the mixing zone. The main problem is to provide a vehicle air conditioner to minimize the temperature difference of the air discharged to the lower half and to reduce the manufacturing cost, and maximize the air conditioning performance.

The present invention provides a vehicle air conditioning apparatus including a defrost vent, a face vent, a floor vent, and a defrost door, a face door, and a floor door that open and close these vents. The floor door comprises a rotating shaft and plate-shaped first and second flaps connected to both sides about the rotating shaft; The first flap provides a vehicle air conditioner, characterized in that a plurality of bypass holes are formed.

At this time, one of the face door and the first flap of the floor door is in contact with each other in the air-conditioning mode of the air conditioning mode, the air passing through the bypass hole flows to the face vent and the floor vent. There is this.

In addition, the first flap and the second flap is characterized in that the first flap is bent to form an acute angle in the direction opposite to the direction in which the first flap is in contact with the lower end of the face door around the rotation axis.

In addition, the first flap is characterized in that it is arranged to protrude toward the warm air flow path from the upper end of the case wall surface provided between the heater core and the floor vent when the floor door is opened.

According to the present invention, the vent door and the floor door meet each other in the bi-level mode to obtain a hot channel effect by drilling a bypass hole in a part of the floor door to maximize the mixing zone without having a separate component to reduce the vertical temperature difference It is possible to obtain the effect of lowering manufacturing costs and improving air conditioning performance.

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

2 and 3 are exemplary cross-sectional views of a vehicle air conditioner according to the present invention, Figure 4 is an exemplary perspective view of a floor door installed in the vehicle air conditioner according to the present invention, Figure 5 is a vehicle air conditioner according to the present invention 6 is a cross-sectional view showing the air flow in the vent mode, Figure 6 is a cross-sectional view showing the air flow in the bi-level mode of the vehicle air conditioner according to the present invention.

As shown in Figures 2 to 4, the vehicle air conditioner according to the present invention includes an air conditioning case 100, the air discharge case inside the defrost vent 210, the face vent ( 230, a floor vent 250 is formed, and an evaporator 110 and a heater core 120 are installed on an air flow path inside the air conditioning case 100, and the heater core 120 and the heater core 120 to control cold and warm air. Tamper doors 270 are 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 discharged toward the face of the passenger by the face vent 230 or by the floor vent 250. It will be discharged to the foot.

At this time, each vent is provided with a defrost door 220, a face door 240, a floor door 260, which is a mode door for adjusting the opening degree.

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

Herein, the present invention improves the structure of the floor door 260 to a kind of center pivot type door, and extends the hot air flow path according to the open / closed state of the floor door 260, or repeatedly performs the It is configured to reduce the difference between the upper and lower temperatures in the level mode and the mix mode, but to ensure sufficient airflow in the vent mode.

To this end, the floor door 260 according to the present invention has a center pivot shape as shown in FIG. 4, for example, a plate-shaped first flap 264 and a second flap respectively on both sides of the rotation shaft 262 ( 266) is integrally formed and connected.

In this case, the second flap 266 performs a main door function of opening and closing the floor vent 250, and the first flap 264 is a warm air flow, that is, a warmer flowing through the heater core 120. By guiding the flow path longer, the function to further increase the mixing efficiency in the mixing zone (M).

In particular, the first flap 264 is in contact with the lower end of the face door 240 which is a vent door when the floor door 260 is opened so that the air mixed in the mixing zone M is excessively flowed toward the floor vent 250. It should be formed long enough to prevent it from being blocked.

Even in this case, since the main door function of opening and closing the floor vent 250 should be performed by the second flap 266, the second flap 266 should be formed to be longer than the first flap 264.

In addition, a plurality of bypass holes (H) are formed in the first flap 264, and the bypass holes (H) have a floor vent (the first flap 264 and the face door 24 in contact with each other). When the 250 is sealed, the mixed air is allowed to flow to the floor vent 250 while the temperature is lowered while bypassing, thereby reducing the temperature difference up to 10 ° C.

Here, the bypass hole (H) may be formed in a plurality of circular or polygonal shape, hot air pushed out by the cold wind is mixed in the mixing zone (M) and then bypassed, the structure and air flow specification of the HVAC The amount of opening of the door can be adjusted or the number of bypass holes (H) can be adjusted. Through this, the existing hot channel effect can be obtained and the effect can be further maximized.

In addition, the first flap 264 and the second flap 266 have an acute angle in a direction opposite to the direction in which the first flap 264 is in contact with the lower end of the face door 240 around the rotation axis 262. Maintaining the shape bent to achieve a more fulfilling role of the hot air guide (function to lengthen the worm flow path) and the hot channel when the floor door 260 is opened, and the case wall surface when the floor 260 is closed ( It is more preferable to be as close to the 102 as possible to ensure sufficient vent flow.

Through this, in the bi-level mode, the end of the first flap 264 is in contact with the end of the face door 240 to form a duct flow path to seal the floor vent 250 and bypass the face vent 230 to separate The same effect can be achieved without using a channel, and the bypass hole H bypasses the maximum mixed air in the mixing zone M, thereby minimizing the temperature difference.

The present invention made up of such a configuration has the following operational relationship according to each mode.

First, in the vent mode as shown in FIG. 5, since the defrost door 220 and the floor door 260 remain closed, and only the face door 240 is opened, the cold and warm air may be used to maintain the face vent 230. It is discharged through.

At this time, since the first flap 264 of the floor door 260 is kept in a state protruding slightly toward the hot air flow path W while being in close contact with the end of the case wall surface 102, it has a function of extending the warm air flow path W. Will be performed.

In the bi-level mode as shown in FIG. 6, since the defrost door 220 is sealed and the face door 240 and the floor door 260 are open, the air is opened in the face vent 230 and the floor. It is discharged in a state that is bisected into the vehicle compartment through the vent (250).

In this case, the first flap 264 of the floor door 260 contacts the lower end of the face door 240 to block the flow path, so that the air flow in the mixing zone M, that is, the mixing ratio, is In this case, a part of the gas is bypassed through the bypass hole H formed in the first flap 264 to be discharged toward the floor vent 250 and the face vent 230 in a state in which the temperature is lowered. Already, the upper and lower temperature difference is reduced by mixing.

In the floor mode, since the defrost door 220 and the face door 240 are closed, and only the floor door 260 is opened, air is discharged into the cabin through the opened floor vent 250.

At this time, since the first flap 264 of the floor door 260 is in the state of protruding as much as possible toward the mixing zone (M), the hot air flow path (W) is induced long, thereby maximizing the mixing zone (M). Since the efficiency is improved, the vertical temperature difference discharged is reduced.

In addition, in the mixed mode, only the face door 240 is closed, the defrost door 220 is half open, and the floor door 260 is completely open, so the air introduced is mixed in the mixing zone (M). Afterwards, the defrost vent 210 and the floor vent 250 are supplied at a constant temperature into the vehicle compartment.

Also in this case, since the floor door 260 is in an open state, there is an effect of extending the warm air flow passage W by the first flap 264.

Finally, in the defrost mode, only the face door 240 is closed, and the defrost door 220 and the floor door 260 are completely open, so that the air introduced therein is mixed in the mixing zone (M). The defrost vent 210 and the floor vent 250 are supplied at a constant temperature into the cabin.

Also in this case, since the floor door 260 is in an open state, the first flap 264 performs a function of extending the warm air flow passage W.

As described above, the floor door according to the present invention performs the hot air flow path extension function and the hot channel function through contact with the face door while the first flap emerges according to the mode, thereby maximizing the mixing zone without reducing the vent flow path. When discharging, the effect of reducing the vertical temperature difference can be obtained.

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

2 and 3 is an exemplary cross-sectional view of the vehicle air conditioner according to the present invention,

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

5 is a cross-sectional view showing the air flow in the vent mode of the vehicle air conditioner according to the present invention,

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

♧ description of the symbols for the main parts of the drawing ♧

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

110 .... Evaporator 120 .... Heater Core

210..Defrost vent 220 .... Defrost door

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

250..Floor Vent 260 .... Floor Door

262..Rotating shaft 264 .... 1st flap

266..Flap 2 268 .... Contact

Claims (4)

In a vehicle air conditioner 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. ; The floor door 260 includes a rotating shaft 262 and plate-shaped first and second flaps 264 and 266 connected to both sides about the rotating shaft 262; The first flap 264 is a vehicle air conditioning apparatus, characterized in that a plurality of bypass holes (H) is formed. The method according to claim 1; In the bi-level mode of the air conditioning apparatus, one end of the face door 240 and the first flap 164 of the floor door 260 contact each other so that the air passing through the bypass hole H may receive a face vent ( 230) and the floor vent 260, characterized in that the vehicle air conditioning apparatus. The method according to claim 2; The first flap 264 and the second flap 266 are bent at an acute angle in a direction opposite to the direction in which the first flap 264 is in contact with the lower end of the face door 240 around the rotation axis 262. Vehicle air conditioning apparatus, characterized in that formed. The method according to claim 1; The first flap 264 protrudes from the upper end of the case wall surface 102 provided between the heater core 120 and the floor vent 250 when the floor door 260 is opened to protrude toward the warm air passage W. Vehicle air conditioner, characterized in that.

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