KR101137321B1 - Air-conditioning device for vehicle - Google Patents

Abstract

An object of the present invention is to provide a vehicle air conditioner capable of implementing the all-mode, in order to achieve this object, the present invention has a plurality of air flow paths are formed therein, defrost which is in communication with the flow paths on one side A vehicle air conditioner, which is rotatably installed in a case and a case having a blower outlet, a floor blower, and a vent blower, and has a mode door for opening and closing the blower outlets, wherein at least one of a defrost blower, a floor blower, and a vent blower Is formed on both sides of the case, the mode door has side members formed to open and close the outlets formed on both sides of the case, the door body is connected to the side members, the mode door rotates at a predetermined angle City, defrost outlet, floor outlet and vent outlet are all open Provides a vehicle air-conditioning apparatus, characterized in that the.

Description

Air-conditioning device for vehicle

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

Figure 2a is a cross-sectional view showing a vehicle air conditioner according to an embodiment of the present invention,

Figure 2b is a partial plan view of the case provided in the air conditioner of Figure 2a,

Figure 3a is a perspective view of the mode door of the vehicle air conditioner of Figure 2a,

3B is a front view of the mode door taken in the direction A of FIG. 3A,

3C is a side view of the mode door taken in the direction B of FIG. 3A,

Figure 4a is a cross-sectional view showing the opening and closing and the air flow direction of the doors in the vent mode in the vehicle air conditioner of Figure 2a,

Figure 4b is a view showing the direction of the mode door in the air conditioner of Figure 4a,

Figure 5a is a cross-sectional view showing the opening and closing and the air flow direction of the doors in the floor mode in the vehicle air conditioner of Figure 2a,

5B is a view showing the direction of the mode door in the air conditioner of FIG. 5A,

Figure 6a is a cross-sectional view showing the opening and closing and the air flow direction of the doors in the defrost mode in the vehicle air conditioner of Figure 2a,

6B is a view showing the direction of the mode door in the air conditioner of FIG. 6A,                 

FIG. 7A is a cross-sectional view illustrating the opening and closing and air flow directions of doors in the bi-level mode in the vehicle air conditioner of FIG. 2A;

7B is a view showing the direction of the mode door in the air conditioner of FIG. 7A,

FIG. 8A is a cross-sectional view illustrating opening and closing directions of air in the vent / defrost mode and the air flow direction in the vehicular air conditioner of FIG. 2A;

8B is a view showing the direction of the mode door in the air conditioner of FIG. 8A,

FIG. 9A is a cross-sectional view illustrating opening and closing directions of the doors and the air flow in all modes in the vehicle air conditioner of FIG. 2A;

FIG. 9B is a view illustrating a direction of a mode door in the air conditioner of FIG. 9A.

Explanation of symbols on the main parts of the drawings

50 door body 51 first plate portion

52: second plate portion 61, 62: side member

71, 72: guide 81, 82: coupling means

91, 92: baffle 100: mode door

110: blower 120: case

130: evaporator 140: heater core

141: vent outlet 142: floor outlet

143 defrost outlet 150 central partition wall

160: temp door 170: upper flow space

175: lower flow space 178: mixing space

The present invention relates to a vehicle air conditioner, and more particularly, to a vehicle air conditioner having an integrated mode door.

Typically, the vehicle is provided with an air conditioning apparatus for providing a comfortable ride to the occupants by maintaining the indoor temperature in an appropriate state by heating or cooling the inside and outside air to enter or circulate into the interior of the vehicle. The air conditioner is provided with an air conditioning case having a plurality of air passages inside, a blower installed at one side of the air conditioning case to blow air into and out of the air conditioning case, and an evaporator and air to cool the introduced air. The heater core is basically provided.

The vehicle air conditioner includes a cooling device for cooling the interior of a vehicle, and a heating device for heating the interior of the vehicle. The cooling device is configured to cool the interior of a vehicle by heat exchange between the evaporator and the indoor and outdoor periods while the heat exchange medium discharged by the driving of the compressor is circulated back to the compressor through the condenser, the receiver dryer, the expansion valve, and the evaporator. In contrast, the heating device is configured to heat the interior of the vehicle by introducing coolant into the heater core and exchanging heat with the outdoor air.

1 is a schematic partial cross-sectional view of a vehicle air conditioner 10 according to the related art.

Referring to the drawings, in the vehicle air conditioner 10, the evaporator 11 and the heater core 12 are sequentially installed on the inner flow path of the case 20. An inlet 21 through which air is introduced into the evaporator 11 side is provided at one side of the case 20, and a blower unit not shown is installed at the inlet 21 side. In addition, a defrost outlet 22, a vent outlet 23, and a floor are provided on the upper side of the case 20, through which the air passed through the heater core 12 or bypassed is blown out. A blowout port 24 is formed. In addition, first and second temporal doors, a vent door, a floor door, and a defrost door are installed in the case 20 to control the wind direction and the wind speed. These doors 31, 32, 33, Depending on the operation of 34,35, various modes may be implemented. Typical examples include a defrost mode, a vent mode, a floor mode, and a bi-level mode and a mix mode.

By the way, such a plurality of doors each require a component such as a door, an arm, a lever, a cam, and the like, and a sealing member is provided. In addition, doors are expensive and time-consuming to manufacture and install.

In addition, if the vehicle windshield is fogged in rainy weather in summer, the air conditioner should be switched to the defrost mode to remove the fog, and afterwards, the vehicle windshield should be switched to the vent mode to improve indoor comfort. There is a hassle to do. This is because defrost take-off and vent take-out are not simultaneously performed at the desired air temperature.

A technique for solving this problem is disclosed in Japanese Patent Laid-Open No. 10-29419. Japanese Patent Application Laid-Open No. 10-29419 describes a vehicle air conditioner that can replace a vent door, a floor door, and a defrost door by one cylindrical door, and five air conditioning modes are implemented by rotating a cylindrical door. However, even in the case of the air conditioner according to this technology, there is a problem in that the all mode in which the vent door, the floor door, and the defrost door are all opened is not realized.

In order to solve the above problems, an object of the present invention is to provide an air conditioner for a vehicle in which six air conditioning modes are implemented, including all modes in which vent extraction, floor extraction, and defrost extraction are simultaneously performed.

In order to achieve the above object and other objects, the present invention has a plurality of air flow paths are formed therein, the defrost blowout port, the floor blower, and the vent blower outlet is formed on one side and the flow passage and The vehicle air conditioner is rotatably installed in the case, the vehicle air conditioner having a mode door for opening and closing the outlets, wherein at least one of the defrost outlet, the floor outlet, the vent outlet is formed on both sides of the case, The mode door includes side members formed to open and close the outlets formed at both sides of the case, and a door body connected to the side members, and the mode door rotates at a predetermined angle. Frost outlet, floor outlet and vent outlet are all open It provides a vehicle air-conditioning apparatus, characterized in that.

In the present invention, preferably, the vehicle air conditioner has a pair of baffles arranged at predetermined intervals on one surface of the door body in order to adjust the air flow rates of the vent blowout outlet and the defrost blowout outlet. It may be further provided.

In this case, preferably, the baffles may be integrally formed with the door body and the side members.

In the present invention, preferably, the vehicle air conditioner may further include a pair of guides disposed along side surfaces of the side members.

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

2a to 2b, there is shown a vehicle air conditioner 200 according to a preferred embodiment of the present invention. As shown, the vehicle air conditioner 200 has a plurality of air flow passages are formed, the case in which the defrost blowout 143, the floor blower 142 and the vent blower 141 is formed on one side ( 120). The defrost outlet 143 is formed on the upper surface of the case 120, and the vent outlet 141 is formed on the rear surface of the case 120. In addition, the floor outlets 142 are formed on both side surfaces of the case 120. Accordingly, the air conditioner 200 according to the present invention does not have long air flow passages extending from the rear side of the case 120 to the lower side, but short air formed on the upper side and the rear side of the case 120. Since only the flow passages 153 and 151 are formed, the size of the overall case 120 is reduced.

Air flowing out of the vent outlet 141 is discharged in an upward direction of the left and right seats (not shown) of the vehicle. In addition, the air flowing out of the floor outlet 142 is discharged in the downward direction of the left and right seats (not shown) of the vehicle. The air discharged from the defrost outlet 143 is discharged to the front and side glass windows of the vehicle.

A blower 110 is installed at the other inner side of the case 120 to introduce air from the outside or recycle the air therein. An evaporator 130 is disposed at the rear end of the blower 110. The evaporator 130 is circulated with a refrigerant supplied from a refrigerating device (not shown) to perform a function of cooling and dehumidifying the air flowing from the blower 110. In addition, a drain hole 125 is formed in a portion of the air conditioning case 120 adjacent to the lower side of the evaporator 120 to discharge condensed water condensed in the evaporator 130.

At the rear end of the evaporator 130, a central dividing wall 150 for dividing the internal space of the air conditioning case 120 into the upper flow space 170 and the lower flow space 175 is disposed. In addition, as illustrated in FIG. 2A, a temporal door (not shown) for controlling the amount of air flowing into the upper flow space 170 and the lower flow space 175 is disposed at the front end of the central dividing wall 150. . Thus, by adjusting the temp door, the amount of air introduced into the upper flow space 170 and the lower flow space 175 is adjusted. The temporal doors are each independently driven to rotate by a driving means such as an actuator (not shown), for example a step motor.

The heater core 140 is disposed in the lower flow space 175. The heater core 140 performs a function of heating the air introduced through the evaporator 130 using the engine coolant of the vehicle.                     

At the rear end of the central dividing wall 150, a mixing space 178 is formed in which air flowing in the upper flow space 170 and air flowing in the lower flow space 175 are mixed.

The rear door of the mixing space 178 is provided with a mode door 100 for opening and closing of the vent outlet 141, the floor outlet 142, and the defrost outlet 143. As shown in FIGS. 3A to 3C, the mode door 100 has a plate-shaped door body 50 bent at an angle of 120 degrees, and a pair of plates disposed on both sides of the door body 50. And side members 61 and 62 in shape. The door body 50 includes a first plate portion 51 and a second plate portion 52.

The side members 61 and 62 have radii on both sides of the first plate portion 51 of the door body 50, respectively, and have a fan shape having an angle of about 180 degrees perpendicular to the first plate portion 51. It has a shape. That is, the first side portions 61a and 62a of the side members 61 and 62 substantially contact both sides of the first plate portion 51. The side members 61, 62 are arranged to be symmetrical to the door body 50. In addition, a portion of the second side portions 61b and 62b of the side members 61 and 62 extends to the first plate portion 51, respectively. In order to simplify the manufacture, the door body 50 and the side members 61 and 62 are preferably integrated.

A pair of baffles extending from the second side portions 61b and 62b of the side members 61 and 62 to the end of the second plate portion 52 while one side is in contact with the second plate portion 52. (91, 92) are arranged. The baffles 91 and 92 are arcuate plates that are convex in the direction of the door body 50, and are preferably symmetrically disposed with respect to the door body 50. Also, for the sake of simplicity, the baffles 91 and 92 are preferably integrated with the door body 50 and the side members 61 and 62.

Guides 71 and 72 are disposed on the arcuate side portions 120 of the side members 61 and 62, respectively. The guides 71, 72 are arranged along the arcuate side portions of the side members 61, 62 such that the side members 61, 62 protrude in opposite opposite directions. The guides 71 and 72 prevent the air from leaking through the side of the mode door 100, thereby ensuring the closing of the floor outlet 142. Also, for the sake of simplicity, the baffles 91 and 92 are preferably integrated with the door body 50 and the side members 61 and 62.

The mode door 120 is coupled to the coupling means 81 and 82 disposed on the side members 61 and 62 in the case 120 between the outlets 141, 142 and 143 and the mixing space 178. Is installed. Referring to FIG. 3B, in the air conditioner according to an embodiment of the present invention, a pair of coupling parts 81 and 82 having one gear tooth 82b is illustrated as the coupling means 81 and 82. . The first coupling portion 81 is a cylindrical protrusion for insertion into a groove (not shown) formed in the case 120. Similar to the first coupling portion 81, the second coupling portion 82 is formed to protrude perpendicular to the cylindrical base end portion 82a and the base end portion 82a for insertion into a hole formed in the case 120. The hand gear 82b is provided. Accordingly, the first coupling portion 81 and the second coupling portion 82 of the mode door 100 are inserted into and coupled to the grooves and holes formed in the case 120, respectively, and the second coupling portion 82 is handwritten. It is connected to a control unit (not shown) in which a female gear (not shown) engaging with the jay 82b is formed, thereby controlling the mode door 100. The hand gear 82b of the second coupling part 82 is formed of six hand gears 82b, and six air-conditioning modes are realized by the rotation of the hand gear 82b. That is, as the mode door 100 is rotated six times at an angle of 60 degrees, the outlets 141, 142, and 143 of the air conditioner 200 are selectively opened and closed to implement six air conditioning modes.

Air passages 152 communicating with the floor outlets 142 are connected to the side surfaces 61 and 62 of the mode door 100, respectively. Therefore, the defrost outlet 143 is opened and closed by the rotation of the side members 61 and 62 of the mode door 100.

An air passage 151 communicating with the vent outlet 141 is connected to the rear end of the mode door 100. Therefore, the air flowing in from the rear end of the mode door 100 flows to the vent outlet through the air passage 151 connected to the vent outlet 141.

In addition, an air flow passage 153 communicating with the defrost outlet 143 is connected to an upper portion of the mode door 100. Therefore, the air flowing in from the upper portion of the mode door 100 flows to the defrost outlet 143 through the air passage 153 connected to the defrost outlet 143.

At this time, the vent outlet 141 and the defrost outlet 143 are opened and closed by the rotation of the door main body 50 of the mode door 100. That is, by the rotation of the mode door, both the vent blowout portion 141 and the defrost blowout outlet 143 can be opened or closed, and only one of them can be opened or closed.

The baffles 91 and 92 formed in the second plate part 52 block a part of the air flow path 153 facing the defrost outlet 143 and flow toward the floor outlet 142. In order to increase the air flow rate, the air volume between the defrost blowout outlet 143 and the floor blowout outlet 142 is appropriately distributed.

Next, referring to Figures 4a to 9b, the operation of the vehicle air conditioner 200 according to an embodiment of the present invention will be described.

4A to 9B illustrate the opening and closing of the doors 100 and 160 and the flow direction of air in the six modes of the air conditioner 200. As shown, the air entering from the blower 110 is cooled by heat exchange with a low temperature refrigerant in the evaporator 130, and then controlled by the operation of the temporal door to control the upper flow space 170 and / or the lower flow space. 175 is entered. If the user requires only cold air, the temp door closes the flow path to the lower flow space 175. Accordingly, air flows into the upper flow space 170 in which the heater core 140 is not disposed, and enters the mixing space 178. However, if the user requires only warmth, by controlling the angle of the temporal door in consideration of the required warmth temperature, in the mixing space 178 after the air flows through the upper flow space 170 and the lower flow space 175. Will be mixed. At this time, since no cool air is required, the refrigerant does not flow in the evaporator 130. In addition, when the user requires a properly air-conditioned air temperature, the air introduced from the blower 110 is cooled by heat exchange with a refrigerant flowing through the evaporator 130, and then the upper flow space 170 by the operation of the temp door. Into the lower flow space 175. In this case, the air introduced into the lower flow space 175 is mixed in the mixing space 178 with the cooled air of the upper flow space 170 after the temperature is raised by heat exchange with the cooling water flowing through the heater core 140. . 4A, 5A, 6A, 7A, 8A, and 9A show the temporal door partially opening (or partially closing) the upper flow space 170 and the lower flow space 175. .

4A and 4B, since the mode door 100 is set to open only the flow path 151 to the vent outlet 141 in the vent mode, the air mixed in the mixing space 178 is opened. Through the flow path 151 is discharged to the vent outlet 141. At this time, by the guides 91 and 92 formed in the mode door 100, the leakage of air into the flow paths 152 connected to the side is suppressed.

5A and 5B show the floor mode of the air conditioner 200. As shown in FIG. 5B, the mode door 100 closes the flow paths 151 and 153 directed to the vent outlet 141 and the defrost outlet 143, and opens only the flow path directed to the floor outlet 142. . That is, the flow paths 152 connected to the side of the mode door 100 are opened, and the flow paths 153 and 151 connected to the rear and top of the mode door 100 are closed. Therefore, the air flowing into the mode door 100 flows through the open induction 152 and then is discharged to the floor outlet 142.

6A and 6B show the defrost mode of the air conditioner 200. Air introduced from the upper flow space 170 and / or the lower flow space 175 is mixed in the mixing space 178 and then flows into the mode door 100. As shown in FIG. 6B, the mode door 100 closes the flow paths 151 and 152 directed to the vent outlet 141 and the floor outlet 142, and flow paths 153 directed to the defrost outlet 143. ) Only open. Therefore, the air flowing into the mode door 100 flows through the open induction 153 and then is discharged to the defrost outlet 143. At this time, by the guides 71 and 72 formed in the mode door 100, the leakage of air into the flow paths 153 connected to the side is suppressed.

7A and 7B illustrate the opening and closing of the doors 100 and 160 and the flow direction of air in the bi / level mode of the air conditioner 200. As shown in FIG. 7B, the mode door 100 closes the flow paths 153 directed to the defrost outlet 143, and opens only the flow paths directed to the vent outlet 141 and the floor outlet 142. That is, the flow passage 153 connected to the upper portion of the mode door 100 is closed, the flow passages 152 connected to the side surfaces 81 and 82, and the flow passage 151 connected to the rear surface of the mode door 100. ) Open. Therefore, the air flowing into the mode door 100 flows through the open flow paths 151 and 152 and then is discharged to the vent outlet 141 and the floor outlet 142.

8A and 8B illustrate the opening and closing of the doors 100 and 160 and the air flow direction in the vent / defrost mode of the air conditioner 200. Air introduced from the upper flow space 170 and / or the lower flow space 175 is mixed in the mixing space 178 and then flows into the mode door 100. As shown in FIG. 8B, the mode door 100 closes the flow path 152 directed to the floor outlet 142, and flow paths 153 and 151 directed to the defrost outlet 143 and the vent outlet 141. Only open. Therefore, the air flowing into the mode door 100 flows through the open flow paths 153 and 151 and then is discharged to the defrost outlet 143 and the vent outlet 141.

9A and 9B illustrate the opening and closing of the doors 100 and 160 and the flow direction of air in the all mode of the air conditioner 200. As shown in FIG. 9B, the mode door 100 opens all the flow paths 151, 153, and 152 directed to the vent outlet 141, the defrost outlet 143, and the floor outlet 142. Therefore, the air flowing into the mode door 100 flows through the open flow paths 151, 153, and 152, and then is discharged to the vent outlet 141, the defrost outlet 143, and the floor outlet 142.

Like reference numerals in the drawings shown above indicate the same members.

The vehicle air conditioner according to the present invention has the following effects.

First, a floor discharge port is formed on the side of the case and communicates with the side of the door body, and a short air flow path connected to the vent outlet is formed substantially parallel to the rear end of the mode door, so that the air flow paths are short and the case is compact. do.

Second, since the vent outlet, the floor outlet, and the defrost outlet can be opened and closed by the integrated mode door, the door design is simplified, and the manufacturing and assembly costs are reduced.

Third, the six air conditioning modes can be realized by the rotation of the integrated mode door. In particular, it is possible to implement the all mode in which the vent outlet, the floor outlet and the defrost outlet are all open.

Fourth, the air volume distribution between the floor outlet and the defrost outlet is made uniform by the baffles formed in the door main body.

Fifth, the air discharged in the lateral direction of the mode door is prevented from leaking to the outside by the guides formed in the side members.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

Claims (4)

A plurality of air flow paths are formed therein, and a defrost blowout port communicating with the flow paths on one side, a floor blowout port, a case in which a vent blowout port is formed, and rotatably installed in the case, and open / close the outlets. In the vehicle air conditioner having a door, At least one of the defrost outlet, the floor outlet, and the vent outlet is formed on both sides of the case, The mode door includes side members formed to open and close the outlets formed on both side surfaces of the case, and a door body connected to the side members. And the defrost outlet, the floor outlet, and the vent outlet are opened when the mode door is rotated at a predetermined angle. The method of claim 1, And a pair of baffles arranged on one surface of the door main body at predetermined intervals to adjust the air flow rates of the defrost air outlet and the floor air outlet. 3. The method of claim 2, And the baffles are integrally formed with the door body and the side members. The method of claim 1, And a pair of guides disposed along side surfaces of the side members.

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