KR20200037940A - HVAC module for vehicles - Google Patents

Abstract

An HVAC module includes: a case including an outside air inlet for the inflow of outside air and an inside air inlet for the inflow of inside air in a room; and an air inlet door installed in the case to be operated in a rotary manner, and formed to selectively open and close the outside air inlet and the inside air inlet. The outside air inlet and the inside air inlet are arranged in a circumferential direction, and the air inlet door includes a closing wall rotating around a rotary shaft and formed to selectively open and close the outside air inlet and the inside air inlet in accordance with a rotation position. The closing wall includes: a first closing part closing the outside air inlet; and a second closing part closing the inside air inlet. The first and second closing parts are placed adjacent to each other in a circumferential direction. The first and second closing parts have an arc shape around the rotary shaft and have a radius becoming greater toward the inner ends facing each other. The HVAC module can minimize power necessary for rotating an air inlet door.

Description

HVAC module for vehicles

The present invention relates to an HVAC module constituting an air conditioner for a vehicle.

The HVAC module is configured to supply hot or cold air into the passenger compartment of the vehicle, and includes an HVAC housing and an evaporator core and a heater core disposed therein. Air is cooled or heated as it passes through the evaporator core or heater core, and then is supplied into the passenger compartment through a vent hole facing the front window, the passenger's face, and the floor.

In general, the HVAC module is configured to selectively or mixedly intake air inside the passenger compartment or external air outside the vehicle to adjust the temperature and then supply it into the passenger compartment. To this end, the HVAC module includes an internal air inlet through which internal air is introduced and an external air inlet through which external air is introduced, and an air flow adjusting means for blocking or allowing the flow of internal air and external air. Typically, the air flow control means is implemented as a door that can open and close the air passage. Conventionally, a cantilever type door rotary type door was introduced. The cantilever type door had a drawback that requires a large operating force due to the driving wind pressure, and the rotary type door had a problem in that sealing near the central axis of the door was difficult. In particular, in the case of an all-in-one type in which several components are all disposed in the HVAC housing of the HVAC module, there is a problem in that configuration is difficult.

US registered patent US9,221,318 (published on December 29, 2015)

The problem to be solved by the present invention is to provide an HVAC module having an improved sealing characteristic and a rotary type door that can be driven by a small operating force.

HVAC module according to an embodiment of the present invention is installed to operate in a rotary manner on the case, and the external air inlet for the inlet of the outside air and the case having an inside air inlet for the inflow of air inside the passenger compartment, and the outside air And an air inlet door formed to selectively open and close the inlet and the internal air inlet. The external air inlet and the internal air inlet are arranged along a circumferential direction, and the air inlet door is rotated around a rotation axis and is formed to selectively open and close the external air inlet and the internal air inlet according to a rotational position. Includes closed walls. The closing wall includes a first closing portion capable of closing the external air inlet and a second closing portion capable of closing the inner air inlet, and the first closing portion and the second closing portion are adjacent along a circumferential direction. Is placed. The first closing portion and the second closing portion each have an arc shape around the rotation axis, but are formed to gradually increase in radius toward the inner ends facing each other.

The external air inlet and the internal air inlet may be formed to have shapes corresponding to arc shapes of the first closing portion and the second closing portion.

The first closure portion and the second closure portion may each include a sealing portion formed to protrude radially outward from at least a portion of the edge for air sealing.

The sealing portion includes a width direction sealing portion provided at a width direction edge of the first closing portion and the second closing portion, and a rotational direction sealing portion provided at inner ends facing each other of the first closing portion and the second closing portion. can do.

The case may be provided between the outer air inlet and the inner air inlet, and may have a rotating space that forms a space in which the rotating direction sealing portion rotates when the closed wall is rotated, wherein the rotating direction sealing portion is the rotating space. It is configured to be caught on the locking jaw of the case that partitions both ends of the case, and can act as a stopper to limit the rotation range of the air inlet door.

The case may include a mounting portion formed to be installed in a space between the external air inlet and the internal air inlet located on the opposite side of the closed wall so that an electric product requiring cooling is installed.

According to the present invention, since the air inlet door is formed not to contact the external air inlet and the internal air inlet when the door is rotated, friction is minimized and power required to rotate the air inlet door can be minimized.

1 is a schematic perspective view of an HVAC module according to an embodiment of the present invention.
2 is a perspective view of an air inlet door of an HVAC module according to an embodiment of the present invention.
3 is a cross-sectional view showing a state in which the air inlet door of the HVAC module according to an embodiment of the present invention is rotated to a position to close the external air inlet.
4 is a cross-sectional view showing a state in which the air inlet door of the HVAC module according to an embodiment of the present invention is rotated to a position to close the internal air inlet.

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

1 and 2, the HVAC module according to an embodiment of the present invention includes a case 10 and the air inlet door 20. The HVAC module allows internal air in the passenger compartment or external air outside the vehicle to be introduced, and then cooled or heated to be supplied into the passenger compartment. Referring to FIG. 1, the case 10 includes an external air inlet 11 for inflow of external air and an internal air inlet 12 for inflow of internal air in the passenger compartment, and the air inlet door 20 includes It is installed on the case 10 to operate in a rotary manner.

Referring to Figure 1, the outer air inlet 11 and the inner air inlet 12 may be arranged at regular intervals along the circumferential direction, the air inlet door 20 is the outer air inlet 11 and the inner air inlet (12) is disposed at the point of convergence may be formed to selectively open and close the external air inlet 11 and the internal air inlet 12 according to their rotation. At this time, although not explicitly shown in the drawings, an actuator (not shown) for rotating the air inlet door 20 may be provided in the case 10. For example, the actuator may be a motor capable of providing rotational force, or may be in the form of a cable that operates in a manual manner.

The air introduced by the opening / closing operation of the air inlet door 20 may be cooled or heated while passing through the scroll 30 and the filter 40 and then passing through the evaporator core 50 or the heater core (not shown). . The cooled or heated air may be discharged through the vent holes 61, 62, and 63 in the direction of the windshield in the passenger compartment, the face of the occupant, and the direction of the foot.

The air inlet door 20 is rotated around a rotation axis RX and includes a closed wall 21 formed to selectively open and close the external air inlet 11 and the internal air inlet 12 according to the rotational position. do. For example, referring to FIG. 2, the air inlet door 20 may include a rotating shaft 22 that is rotatably fastened to the case 10, and the closing wall 21 includes a connecting member 23. It can be connected to the rotating shaft 22 to rotate with the rotating shaft 22 through. The rotation axis RX may be a central axis in the longitudinal direction of the rotation shaft 22. Referring to FIG. 2, the closed wall 21 may have an arc shape centered on the rotation axis RX, and has a predetermined length in a direction parallel to the rotation axis RX, that is, a width direction, and centers the rotation axis RX. It may have an arc shape in the circumferential direction, that is, in the rotation direction.

The closing wall 21 includes a first closing portion 211 formed to close the outer air inlet 11 and a second closing portion 212 formed to close the inner air inlet 12. can do. Referring to FIG. 2, the first closing portion 211 and the second closing portion 212 may be arranged adjacently along a rotational direction to have an arc shape as a whole. 3 and 4, the first closing portion 211 is disposed on the outer air inlet 11 side, and the second closing portion 212 is disposed on the inner air inlet 12 side. In this case, the first closing portion 211 and the second closing portion 212 may have arc shapes around the rotation axis, but may be formed to gradually increase in radius toward the inner ends 213 and 214 facing each other. As shown in FIG. 2, the two inner ends 213 and 214 may be disposed at the center portion in the rotational direction of the closing wall 21. That is, referring to FIG. 3, the first closing portion 211 is formed such that the inner diameter R1 of the portion close to the inner end portion 213 is larger than the inner diameter R2 of the distant portion, and the second closing portion 212. Is formed such that the inner diameter R3 of the portion close to the inner end 214 is larger than the inner diameter R4 of the distant portion. At this time, the outer air inlet 11 and the inner air inlet 12 are also formed to have corresponding shapes. Accordingly, as illustrated in FIGS. 3 and 4, the first and second closing portions 211 and 212 may be completely in contact with the external air inlet 11 and the internal air inlet 12 and external air during rotation. It does not come into contact with the part forming the inlet 11 and the inner air inlet 12. As a result, friction does not occur during rotation, and driving force required for rotation of the air inlet door 20 may be minimized.

3 shows a state in which the air inlet door 20 closes the external air inlet 11, and FIG. 4 shows a state in which the air inlet door 20 closes the inner air inlet 12. The air inlet door 20 is rotated around the rotational axis to be in the state of FIG. 3 or FIG. 4, so that inside or outside air can be selectively introduced.

The first and second closing portions 211 and 212 include sealing portions 215 and 216, respectively, which are formed to protrude radially outward on at least a portion of the edge for air sealing. The first closing part 211 may include a width direction sealing part 2151 formed on the edge in the width direction and a rotation direction sealing part 2152 formed on the edge in the rotation direction. Likewise, the second closing portion 212 may include a width direction sealing portion 2161 formed on the edge in the width direction and a rotation direction sealing portion 2162 formed on the edge in the rotation direction.

Referring to FIG. 3, the case 10 includes a rotating space 15 that forms a space in which the rotating direction sealing portions 2152 and 2162 rotate when the closed wall 21 is rotated. The rotating space 15 is disposed between the outer air inlet 11 and the inner air inlet 12 and extends along the rotational direction of the closing wall 21. At this time, the rotating direction sealing portions 2152 and 2162 are configured to be caught on the locking jaws 16 that partition both ends of the rotating space, and serve as a stopper for limiting the rotation range of the air inlet door. When the air inlet door 20 closes the external air inlet 11 as shown in FIG. 3, the rotating direction sealing portion 2152 of the first closing portion 211 is jammed near the external air inlet 11 When in contact with the chin 16 and the air inlet door 20 closes the inner air inlet 12 as shown in FIG. 4, the sealing direction 2162 in the rotation direction of the second closing part 212 is internal It contacts the locking jaw 16 near the air inlet 12.

On the other hand, the case 10 is a mounting portion that can be installed in the space between the outer air inlet 11 and the inner air inlet 12, which is located on the opposite side of the closed wall 21, the electric component 100 that needs cooling (17) can be provided. Since the electric component 100 is installed in a range that does not interfere with the rotation of the air inlet door 20, cooling of the electric component 100 that needs cooling without a separate cooling device may be achieved.

Although the embodiments of the present invention have been described above, the scope of rights of the present invention is not limited to this, and is easily changed and equivalent by those skilled in the art from the embodiments of the present invention. Includes all changes and modifications to the extent possible.

10: case
11: External air inlet
12: External air inlet
15: rotating space
16: Hanging jaw
17: Mounting part
20: air inlet door
21: Closed wall
211: first closure
212: second closure
215, 216: sealing portion
22: rotating shaft

Claims (6)

A case having an external air inlet for inflow of external air and an internal air inlet for inflow of air inside the passenger compartment, and
It is installed to operate in a rotary manner on the case and includes an air inlet door formed to selectively open and close the external air inlet and the internal air inlet,
The outer air inlet and the inner air inlet are arranged along the circumferential direction,
The air inlet door includes a closed wall that rotates around a rotation axis and is formed to selectively open and close the external air inlet and the internal air inlet according to a rotational position,
The closing wall includes a first closing portion capable of closing the external air inlet and a second closing portion capable of closing the inner air inlet,
The first closing portion and the second closing portion are disposed adjacent along the circumferential direction,
The first closing portion and the second closing portion each have an arc shape around the rotation axis, but are formed to gradually increase in radius toward the inner ends facing each other.
HVAC module In claim 1,
The external air inlet and the internal air inlet HVAC module is formed to have a shape corresponding to the arc shape of the first closing portion and the second closing portion. In claim 1,
The first closing portion and the second closing portion are each HVAC module including a sealing portion formed to protrude radially outward at least a portion of the edge for air sealing. In claim 3,
The sealing portion includes a width direction sealing portion provided at a width direction edge of the first closing portion and the second closing portion, and a rotational direction sealing portion provided at inner ends facing each other of the first closing portion and the second closing portion. HVAC module. In claim 4,
The case is disposed between the outer air inlet and the inner air inlet, and has a rotating space that forms a space in which the sealing direction of the rotating part rotates when the closed wall is rotated.
The rotating direction sealing portion is configured to be caught on a locking jaw of the case partitioning both ends of the rotating space to act as a stopper for limiting the rotation range of the air inlet door.
HVAC module. In claim 1,
The case is a HVAC module having a mounting portion formed to be installed in the space between the external air inlet and the internal air inlet located on the opposite side of the closed wall so that the electric product requiring cooling is installed.

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