KR20050112274A - Air conditioner for a car - Google Patents

Abstract

The present invention relates to an air conditioner for automobiles, which can reduce the installation space of the air filter, can prevent the exposure of the air filter to the blowing air when the air is not flown, and the odor of the evaporator which is a substantial odor source It aims to be able to filter.

An air conditioner for an automobile according to the present invention includes an air conditioning case 240 in which an evaporator 260 and a heater core 270 are built in, and a blower 200 is installed at an inlet; A dome-shaped door 110 formed at both ends of the support shaft 116 supported by the air conditioning case and having an inlet 112 and an outlet 114 formed on an outer circumferential surface thereof; A moving filter (130 or 140, 150) installed in the domed door; Determination means (290) for determining whether the air flowing into the air conditioning case is contaminated; And, if the air is contaminated, moving the moving filter to the air filtering position, if the air is not contaminated, the moving means for moving the moving filter to the standby position;

Description

Automotive Air Conditioning Unit {AIR CONDITIONER FOR A CAR}

The present invention relates to an air conditioner for automobiles, and in particular, since the air filter is installed in the dome type door, a separate space for installing the air filter is not required, and when the air is not flown, the exposure of the air filter to the blowing air is prevented. The present invention relates to a vehicle air conditioner that can extend the life of an air filter.

The air conditioner for a vehicle blows air into an air conditioning case by a blower and heat-exchanges the blown air with a heat exchange medium passing through an evaporator and / or a heater core, thereby controlling the temperature of the air to control the interior of the vehicle. It is a device for heating and heating.

As shown in FIG. 12, the blower 10 for blowing air selectively switches between the inside / outside air intakes 14 and 16 and the inside / outside air intakes 14 and 16 formed on both upper sides. An air intake duct 12 having a door 18; A scroll case 22 installed at a lower portion of the air intake duct 12 through a bellmouth 20; A centrifugal fan (24) installed in the scroll case (22) to blow air in an axial direction from the inside / outside air intake ports (14, 16); And, it comprises a motor (Motor, 26) for rotating the centrifugal fan (24). Therefore, when the centrifugal fan 24 is rotated by the driving of the motor 26, the internal / external air introduced through the internal / external air suction openings 14 and 16 which are selectively opened by the switching of the switching door 18 is ringed. It flows in the axial direction of the centrifugal fan 24 through the mouse 20. The air escapes radially in accordance with the rotation of the centrifugal fan 24, and as shown in FIG. 13, an air conditioner case in which the evaporator 40 and the heater core 50 are built in is discharged through the discharge port of the scroll case 22. It is blown toward 70. As such, the air blown into the air conditioning case 70 is heat-exchanged while passing through the evaporator 40 and / or the heater core 50 to be changed into cold or warm air, and then vented into the vehicle interior through the vents 72, 74, and 76. By discharging, the heating and cooling of the vehicle interior is performed.

Meanwhile, in order to remove dust or harmful components contained in the air introduced through the air intake duct while the automobile is gradually advanced, as shown in FIG. 12, the air filter 30 is disposed at the lower end of the air intake duct 12. Increasingly built. As an example, a filter insertion hole 34 is formed at one side of the lower end of the air intake duct 12, the air filter 30 is inserted through the filter insertion hole 34, and the filter is filtered through the filter cover 32. There is a structure for blocking the insertion hole (34). Such a technique is well disclosed in Korean Utility Model Registration No. 20-333187. However, in the structure in which the air filter 30 is installed in the air intake duct 12 as in the prior art, the air filter 30 is formed in a rectangular box shape and the conversion door 18 is formed in a plate shape. There is a problem that the size of the air intake duct 12 becomes large.

On the other hand, as another technique for installing the air filter in the air conditioner, the technique disclosed in Korean Utility Model Registration No. 20-157691. In this case, as shown in FIG. 13, the air filter 60 is installed upstream of the evaporator 40 in the air conditioning case 70 to filter harmful substances contained in the air blown from the blower 10. . However, even in such a technique, since the space for installing the rectangular air filter 60 is still required, the size of the air conditioning case 70 is inevitably increased.

On the other hand, in the prior art as described above, since the air filters 30 and 60 are continuously exposed to the blowing air, the filtration and adsorption capacity is lost, and thus the life of the air filters 30 and 60 is shortened. Of course, by releasing the adsorbed odor is annoying to the driver. In addition, since the air filters 30 and 60 are installed upstream of the evaporator 40, there is a problem in that the odor generated in the evaporator 40, which is a substantial source of odor, is not filtered out.

The present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to provide an air conditioner for automobiles that can reduce the installation space of the air filter.

Another object of the present invention is to prevent exposure of the air filter to the blowing air when the air is not flowing.

Another object of the present invention is to be able to filter off the odor of the evaporator, which is a substantial source of odor.

In order to achieve the above object, an air conditioner for an automobile according to the present invention includes an air conditioning case in which an evaporator and a heater core are built in, and a blower is installed at an inlet; A dome-shaped door having support shafts supported at the air-conditioning cases at both ends and having inlets and outlets formed at outer circumferential surfaces thereof; A moving filter installed at the domed door; Determination means for determining whether the air flowing into the air conditioning case is polluted; And moving means for moving the moving filter to an air filtration position when the air is contaminated, and moving the moving filter to a standby position when the air is not contaminated.

The moving means includes a driving motor for rotating the support shaft, and a guide formed in the air conditioning case to guide the rotation of the domed door.

In addition, the moving filter is preferably a cylindrical filter member installed in the domed door, the cylindrical filter member may be integrally installed in the domed door.

In addition, the moving filter may be installed at the inlet or the outlet of the domed door.

The determining means may include a mode detecting means for detecting an air inflow mode and a gas detecting means for detecting whether an exhaust gas is introduced, and the mode detecting means detects that the air is in an outside air mode. When it is detected that the exhaust gas is introduced by the sensing means, it is determined that the air is contaminated. In addition, when it is determined by the determination means that the air is contaminated, the air inflow mode of the blower is switched to the bet mode.

In addition, the determining means may be configured to determine that the air is contaminated when the blower is in operation.

The determining means may be configured to determine that the air is contaminated when the cooling cycle through the evaporator is in operation. In this case, the moving means moves the moving filter to the standby position when a predetermined time elapses after the operation of the cooling cycle, and moves the moving filter to the standby position when a predetermined time elapses after the cooling cycle is stopped. It can be made to move to.

The determining means may be configured to move the moving filter to a standby position when only a heating cycle through the heater core is in operation.

In addition, the determining means may further comprise a wind pressure or air flow rate detection means, when the wind pressure or air flow is less than a predetermined value, it may be made to move the moving filter to the standby position.

In addition, the determination means may further include an operation switch for moving the moving filter to a standby position or a filtration position by an operation.

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings. Prior to this, the terms or words used in the present specification and claims are based on the principle that the inventor can appropriately define the concept of terms in order to explain the invention in the best way. It should be interpreted as meanings and concepts corresponding to

As shown in FIG. 11, the air conditioner for an automobile according to the present invention includes an air conditioner case in which an evaporator 260 and a heater core 270 are sequentially installed on the upstream and downstream sides, and a blower 200 is installed at an inlet. 240; A domed filter door (100) installed in the flow path (242) of the air conditioning case (240); Determination means (290) for determining whether the air flowing into the air conditioning case (240) is contaminated; And, if the air is contaminated, moving the dome-shaped filter door 100 to filter the air, if the air is not polluted moving means 280 for moving the dome-shaped filter door 100 to the standby position; includes; It is done by

As shown in FIGS. 1 and 2, the dome-shaped filter door 100 has support shafts 116 supported at both ends of the air conditioning case 240, and the inlet 112 and the outlet 114 are formed at outer circumferential surfaces thereof. ) Is formed and includes a moving filter 130 is installed on the dome-shaped door (110). In this example, it is shown that the domed door 110 is formed in a dome shape, and the cylindrical filter member is employed as the moving filter 130.

In this example, the domed door 110 has a bipartite structure with respect to the circumferential direction. Accordingly, the dome-shaped door 110 may be formed by dividing the dome-shaped door 110 to insert the columnar filter member 130 and then assembling the divided dome-shaped door 110. In addition, the support shaft 116 formed on both ends of the dome-shaped door 110 to be rotatably supported on the wall surface of the air conditioning case 240, the drive motor constituting the moving means 280 as shown in FIG. By being connected to the shaft 284 of 282, it can be rotated at a predetermined angle with respect to the flow path 242 of the air conditioning case 240. In order to move the dome-shaped filter door 100, specifically, the dome-shaped door 110 as described above, the moving means 280 is installed in a predetermined flow path 242 of the air conditioning case 240 so that the dome-shaped door ( And a guide 244 for guiding movement of the 110. The pair of guides 244 may be installed to face each other in an arc shape according to the shape of the outer circumferential surface of the domed door 110.

As the cylindrical filter member 130 as the moving filter, various filters such as a porous sponge filter, a foamed metal filter, a filter capable of removing odors by adding carbon thereto, a carbon filter, and a composite filter having carbon attached to a nonwoven fabric may be used. Can be employed.

Meanwhile, another example of the domed filter door 100 is shown in FIG. 3. That is, the inlet side movement filter 140 and the outlet side movement filter 150 are detachably attached to the inlet 112 and the outlet 114 at this dome type filter door 100. For example, support rails 120 protrude from both circumferential sides of the inlet 112 and the outlet 114, respectively, and end portions of the inlet and outlet side moving filters 140 and 150 are detached from the support rails 120. It can possibly be slidingly coupled. In this case, since the domed door 110 is not divided into two parts as described above, the inlet and outlet side air filters 140 and 150 can be detachably combined without having to disassemble the domed door 110. There is this.

Like the columnar filter member 130, the inlet and outlet side moving filters 140 and 150 also have a porous sponge filter, a foamed metal filter, and a carbon filter to remove odors by adding carbon to them. Various filters, such as a composite filter attached to the can be employed.

In addition, another example of the domed filter door 100 is shown in FIG. 4, which is substantially the same as the domed filter door shown in FIG. 3, but the inlet and outlet side moving filters 140 and 150. The structure to put on and take off) is a little different. That is, in the domed filter door 100 shown in FIG. 4, the domed door 110 is divided into two parts, and the support rails 120 which face each other at the circumferential ends of the inlet 112 and the outlet 114 are opposed to each other. And 120 are recessed, respectively, and end portions of the inlet and outlet side moving filters 140 and 150 are detachably slidably coupled to the recessed support rails 120. Therefore, since the outer surfaces of the inlet and outlet side moving filters 140 and 150 coincide with the outer circumferential surfaces of the dome-shaped filter door 100, there is an advantage that the size can be reduced as compared with the domed filter door of FIG. 3.

Next, an example in which the dome-shaped filter door 100 configured as described above is provided in the flow path 242 of the air conditioning case 240 will be described.

That is, as shown in Figures 5 and 6, the dome-shaped filter door 100 may be installed in the blower 200 constituting the air conditioner. An arc guide 244 connected to the inside / outside air intake openings 212 and 214 is formed inside the air intake duct 210 having the inside / outside air intake openings 212 and 214 formed therebetween, and between the arc guides 244. The domed filter door 100 may be rotatably installed. By the domed filter door 100 installed in this way, the size of the air intake duct 210 can be significantly reduced as compared with the conventional. When the dome filter door 100 is installed in the blower 200 as described above, as shown in FIG. 5, when the dome filter door 100 rotates such that the inlet 112 faces the intake air inlet 212. The centrifugal fan 230 which is rotated by the motor 220 via the cylindrical filter member 130 (or the inlet and outlet side moving filters 140 and 150) as the moving filter, is the bet sucked through the bet suction port 212. It may be blown to the air conditioning case 240 by. In addition, as shown in FIG. 6, when the dome-shaped filter door 100 rotates such that the inlet 112 faces the outside air inlet 214, the bet introduced through the outside air inlet 214 is also a cylindrical filter as a moving filter. It may be blown to the air conditioning case 240 by the centrifugal fan 230 that is rotated by the motor 220 via the member 130 (or the inlet and outlet side moving filter (140, 150)).

7 and 8 illustrate an example in which the dome-type filter door 100 is installed in the flow path 242 of the air conditioning case 240 constituting the air conditioner. The domed filter door 100 may be provided in the flow path 242 of the air conditioning case 240, for example, upstream of the evaporator, downstream of the evaporator 260 as shown in FIGS. 7 and 11, or as illustrated in FIG. 9. Each vent 250 may be installed.

Therefore, as shown in FIG. 7, when the dome-shaped filter door 100 rotates so that the inlet 112 and the outlet 114 communicate with the flow path 242 of the air conditioning case 240, the dome-shaped filter door 100 is provided. Since the air blown from the upstream side (eg, the evaporator 260 side) of the filter passes through the inlet and outlet side moving filters 140 and 150 (or the columnar filter member 130), foreign substances and odors can be removed.

In addition, as shown in Figure 8, when the dome-shaped filter door 100 is rotated so that the inlet 112 and outlet 114 does not communicate with the flow path 242 of the air conditioning case 240, the blowing air is the inlet and Since the inlet and outlet side moving filters 140 and 150 (or the columnar filter member 130) are not passed through the outlet side moving filters 140 and 150 (or the columnar filter member 130). As a result, the life of the moving filter can be extended.

On the other hand, the determination means 290 includes a mode detecting means 292 for detecting the air inlet mode, and a gas detecting means 294 for detecting whether the exhaust gas inlet. Therefore, when the mode sensing means 292 is detected as the outside air mode and the exhaust gas is introduced by the guide 244, the determination means 290 is to determine that the air is contaminated have.

As such, when it is determined that the air is contaminated by the determination means 290, the determination means 290 moves the driving motor of the movement means 280 to move the movement filter 130, 140, or 150 to the air filtration position. 282). In addition, if it is determined that the air is not contaminated by the determining means 290, the determining means 290 moves the drive motor 282 of the moving means 280 to move the moving filter 130 or 140 or 150 to the standby position. ).

On the other hand, when it is determined that the air is contaminated by the determination means 290, the air inflow mode of the blower 200 is switched to the bet mode. In addition, the determination means 290 may be configured to determine that the air is contaminated when the blower 200 is operating.

In addition, the determining means 290 may be configured to determine that the air is contaminated when the cooling cycle through the evaporator 260 is in operation. In this case, when the predetermined time has elapsed since the operation of the cooling cycle has elapsed, the moving means 280 moves the movement filter 130, 140, or 150 to a standby position, and the predetermined time after the operation of the cooling cycle has been stopped. When the elapsed time, the moving filter 130 or 140 or 150 may be moved to a standby position.

In addition, the determining means 290 may be configured to move the moving filter 130, 140, or 150 to a standby position when only a heating cycle through the heater core 270 is in operation.

In addition, the determination means 290, as shown in Figure 11, further comprises a wind pressure or air flow rate detection means 296, when the wind pressure or air flow is less than a predetermined value, the moving filter (130, 140, 150) It can be made to move to the standby position.

In addition, the determination means 290, as shown in Figure 11, further comprises an operation switch 298 capable of moving the moving filter (130, 140, 150) to the standby position or filtration position by the operation. can do.

In the vehicle air conditioner according to the present invention configured as described above, since the movable filter 130, or 140, 150 is detachably coupled to the dome-shaped door 110, the installation space can be reduced, so that the air conditioner It can be configured compactly.

In addition, when the air is not flowing, the exposure of the moving filter 130 or 140 or 150 to the blowing air can be prevented, so that the adsorption rate can be improved to extend the life of the moving filter 130 or 140 or 150. .

In addition, the adsorption rate is improved and, for example, when installed on the downstream side of the evaporator 260 or the vent 250, the odor of the evaporator 260, which is a substantial source of odor, may be filtered out, thereby providing a comfortable environment for the passengers. can do.

In the above description, the air intake duct of the blower, the flow path and vent of the air conditioning case are shown and described separately, but the air intake duct and the vent should also be included in the meaning of the flow path of the air conditioning case.

1 is a perspective view showing an example of a domed filter door constituting the air conditioner for automobiles according to the present invention.

2 is a cross-sectional view of FIG. 1.

3 is a cross-sectional view showing another example of the domed filter door constituting the air conditioner for automobiles according to the present invention.

4 is a cross-sectional view showing still another example of the dome filter door constituting the vehicle air conditioner according to the present invention.

5 is a cross-sectional view showing a state in which a dome type filter door is mounted on a blower constituting an air conditioner for automobiles according to the present invention and filters bet.

6 is a cross-sectional view illustrating a state in which a dome type filter door is mounted in a blower constituting an air conditioner for automobiles according to the present invention to filter outside air.

7 is a cross-sectional view illustrating a state in which a dome-type filter door is installed in a channel of an air conditioning case constituting an air conditioner for automobiles according to the present invention to filter the condition air.

8 is a cross-sectional view showing a state when a dome-shaped filter door is installed in the air passage of the air conditioning case constituting the air conditioner for automobiles according to the present invention and does not filter the rough air.

9 is a partially cutaway perspective view illustrating an example in which a dome type filter door is installed in a vent of an air conditioning case constituting an air conditioner for a vehicle according to the present invention.

10 is a perspective view showing a structure in which the dome filter door is operated.

11 is a view for explaining a structure for controlling the operation of the dome-type filter door in the vehicle air conditioner according to the present invention.

12 is a cross-sectional view showing a state where a conventional air filter is installed in a blower.

Fig. 13 is a sectional view showing a state where a conventional air filter is installed upstream of an evaporator in an air conditioning case constituting an air conditioner.

** Description of symbols for the main parts of the drawing **

110: domed door, 112: entrance,

114: outlet, 116: support shaft,

130, 140, 150: moving filter, 240: air conditioning case,

244: guide, 260: evaporator,

270: heater core (280), 280: means of transportation,

282: driving motor, 290: determination means,

296: Air flow or wind pressure detection means, 298: Operation switch.

Claims (14)

An air conditioning case in which an evaporator and a heater core are embedded and a blower is installed at an inlet; A dome-shaped door having support shafts supported at the air-conditioning cases at both ends and having inlets and outlets formed at outer circumferential surfaces thereof; A moving filter installed at the domed door; Determination means for determining whether the air flowing into the air conditioning case is polluted; And, And moving means for moving the moving filter to an air filtration position when the air is contaminated, and moving the moving filter to a standby position if the air is not contaminated. . The method of claim 1, The moving unit includes a driving motor for rotating the support shaft, and a guide formed in the air conditioning case to guide the rotation of the dome-shaped door, characterized in that the vehicle air conditioner. The method of claim 1, The moving filter is a vehicle air conditioner, characterized in that the cylindrical filter member installed in the domed door. The method of claim 3, wherein The cylindrical filter member is an automobile air conditioner, characterized in that integrally installed in the domed door. The method of claim 3, wherein And the moving filter is installed at an inlet or an outlet of the domed door. The method of claim 1, The determination means, It comprises a mode detecting means for detecting the air inlet mode, and a gas detecting means for detecting whether the exhaust gas inlet, The air conditioner for a vehicle, characterized in that the air is contaminated when the mode sensing means is detected in the outside air mode and the exhaust gas is introduced by the gas sensing means. The method of claim 6, And if it is determined that the air is contaminated by the determination means, the air inflow mode of the blower is configured to be switched to the bet mode. The method of claim 1, And the determining means is configured to determine that the air is contaminated when the blower is in operation. The method of claim 1, The determination means is a vehicle air conditioner, characterized in that the air is contaminated when the cooling cycle through the evaporator is in operation is made. The method of claim 9, And said moving means is configured to move said moving filter to a standby position when a predetermined time has elapsed since the operation of said cooling cycle. The method of claim 9, And the moving means is configured to move the moving filter to a standby position when a predetermined time elapses after the cooling cycle is stopped. The method of claim 8, And the determining means is configured to move the moving filter to a standby position when only a heating cycle through the heater core is in operation. The method of claim 1, The determination means further comprises a wind pressure or air flow rate detection means, when the wind pressure or air flow is less than a predetermined value, the air conditioner for a vehicle, characterized in that for moving the moving filter to the standby position. The method of claim 1, And said determining means further comprises an operation switch for moving said moving filter to a standby position or a filtration position by an operation.