KR20080066349A - Blower for vehicles - Google Patents

Abstract

A blowing apparatus for a vehicle is provided to prevent noise caused by vibration of an auxiliary door by preventing the auxiliary door from colliding with external air by using a cover surrounding the auxiliary door. A blowing apparatus(100) for a vehicle comprises an intake duct(110) provided with a switching door(115) to open and close indoor and outdoor air intake ports(111,112). A scroll case(120) is coupled with the lower portion of the intake duct and has a blowing fan therein. An air filter(130) is inserted into a container(127) provided between the intake duct and the scroll case and includes a filter unit(131) and a frame unit(132). A filter cover(135) is detachably coupled with an inlet of the container to seal the container. The filter cover is formed with an indoor air inlet hole(136). An auxiliary door(137) is coupled with the filter cover to open and close the indoor air inlet hole.

Description

Blower for Vehicles

1 is a block diagram showing a general vehicle air conditioner,

2 is a cross-sectional view showing a general vehicle blower;

3 is a partial cross-sectional view showing another example of a conventional vehicle blower;

Figure 4 is a perspective view of the internal and external air conversion door in Figure 3,

5 is an exploded perspective view showing a vehicular blower according to the present invention;

6 is a cross-sectional view illustrating a state in which an auxiliary door is closed in a vehicle blower according to the present invention;

7 is a cross-sectional view illustrating a state in which an auxiliary door is opened in a vehicle blower according to the present invention;

FIG. 8 is a cross-sectional view illustrating a state in which a lower end of the cover extends to an inner lower end of the filter unit in FIG. 7.

<Description of Signs of Major Parts of Drawings>

100: blower 110: intake duct

111: inlet for inlet 112: outside inlet

115: internal and external air conversion door 115a: rotating shaft

115b: plate

120: scroll case

122: outlet 123: blowing fan

124: motor 125: inlet ring

126: Bellemouth 127: storage room

130: air filter 131: filter unit

132: frame portion 135: filter cover

135a: elastic rib 136: inlet hole

137: auxiliary door

140: betting means 150: coupling means

151: coupling hole 152: fixing member

152a: protrusion 160: cover

161: sidewall

The present invention relates to a blower for a vehicle, and more particularly, to surround the auxiliary door inside the intake duct in a structure in which an air inlet means for introducing a part of the bet is installed in the filter cover to improve heating performance in the outdoor air inlet mode. By providing a cover, the vehicle is capable of smoothly operating the auxiliary door and preventing the vibration of the auxiliary door, and thus preventing noise, because it is not disturbed by external air flowing through the external air inlet when the auxiliary door is operated. It relates to a blower.

In general, a vehicle air conditioner is a device that cools or heats a vehicle interior by introducing indoor / outdoor air of a vehicle and heating or cooling the air to blow into the interior of the vehicle, as shown in FIG. And the outside air inlet 22 is formed on one side, and the internal and outdoor air inlet doors 23 are installed to selectively open and close the internal and outdoor air inlets 21 and 22. A blower 10 including a blower fan 35 for forcibly blowing to the side 43, an inlet side 43 into which air blown from the blower 10 is introduced, and an outlet from which the air is discharged The side 44 is provided and consists of an air conditioning case 40 in which the evaporator 41 and the heater core 42 are sequentially provided at predetermined intervals therein.

Here, the internal and external air conversion door 23 is used in various forms such as a plate type, a dome type, a cylindrical shape, a hemispherical shape, which receive less air pressure, according to the purpose.

2 is a cross-sectional view showing a general vehicle blower to which the plate type internal and external air conversion doors are applied. As illustrated, the air blower 10 may include an internal air inlet 21 and an external air inlet 22 so that internal and external air can be respectively introduced. Intake duct 20 and the inside and outside air conversion door 23 is installed therein to selectively open and close the internal and external air inlet (21, 22), and is coupled to the lower portion of the intake duct 20 In addition, the filter case is detachably coupled between the intake duct 20 and the scroll case 30 and a scroll case 30 having a blowing fan 35 installed therein to forcibly blow the outside air into the air conditioning case 40. The air filter 25 which filters the impurities contained in the air, which is composed of the part 26 and the frame part 27, is installed at the lower portion of the scroll case 30 to drive the blower fan 35. The motor 36 is comprised.

In addition, the internal and external air conversion doors 23 are driven by a separate cable (not shown) and an actuator (not shown).

Therefore, in the air inflow mode, the internal and external air conversion doors 23 open the air inlet 21 and the air inlet 22 is sealed. At this time, the air inlet 21 is operated by the operation of the blower fan 35. The bet introduced through the bell mouse 31 moves to the scroll case 30 and is forcedly blown into the air conditioning case 40.

In addition, in the external air inflow mode, the internal and external air conversion door 23 seals the internal air inlet 21 and the external air inlet 22 is opened. At this time, the external air inlet 22 is operated by the operation of the blower fan 35. Outside air introduced through the) is moved to the scroll case 30 through the bell mouse 31 and then forcedly blown into the air conditioning case 40.

However, the conventional blower 10 has a problem that a lot of power required to increase the heating performance when the heater is operated in cold weather, such as winter. That is, in cold weather, such as winter season, while maintaining the interior of the vehicle in the heating state is set to the fresh air inlet mode so that frost does not occur on the window glass, according to the cold air outside the vehicle only through the fresh air inlet 22 accordingly There is a problem in that a lot of power required to heat the room and the heating performance is reduced.

As an example for solving this problem, Japanese Utility Model Publication No. 57-76120 discloses a blower that changes the structure of the internal and external air switching doors to improve the heating performance by introducing a portion of the internal air in the inflow mode. have.

3 is a partial cross-sectional view of the blower according to the prior art, Figure 4 is a perspective view showing the internal and external air conversion door in Figure 3, the blower is rotated between the air inlet 61 and the air inlet 62 The auxiliary passage 71 is formed on the upper side of the plate-shaped internal and external air conversion door 63 for selectively opening and closing the internal air inlet 61 and the external air inlet 62, and freely driven around an upper end of the auxiliary air inlet 61. The auxiliary door 70 is attached to the rotation shaft 63a of the internal / external air switching door 63 so as to open and close the passage 71.

That is, the auxiliary door 70 is normally in a state in which the auxiliary passage 71 is closed by its own weight, and in the external air inflow mode, the auxiliary door 70 is subjected to a negative pressure (pressure difference) generated by the operation of a blower fan (not shown). It is driven to open the auxiliary passage 71 by. Therefore, when the heater is operating, the air introduced through the outdoor air inlet 62 and the internal air introduced through the auxiliary passage 71 are mixed and introduced into the air conditioning case, thereby reducing the power required for heating and improving heating performance. It would be.

However, the conventional blower, the auxiliary door 70 to the rotating shaft (63a) of the internal and external air conversion door 63 so that the internal and external air conversion door 63 and the auxiliary door 70 is rotated separately. After assembling in a flap form, the upper end of the internal / external air conversion door 63 should be fixed to the rotation shaft 63a by using a separate fixing screw 64, so it is assembled with an increase in unnecessary parts. It is accompanied by the hassle according to the work, thereby resulting in a problem of lowering productivity due to an increase in manufacturing cost.

In addition, as described above, the internal air inflow structure using the auxiliary door 70 in the external air inflow mode is applicable only when the internal and external air conversion door 63 is a plate-shaped, dome-shaped or other forms (cylindrical, hemispherical, etc.) In this case, since the auxiliary door 70 cannot be installed, there is still a problem that the heating performance is deteriorated because the internal air cannot be introduced in the external air inflow mode.

Korean Patent Application No. 10-2006-0032836 (April 11, 2006), filed by the applicant of the present invention as a technique for solving the above problems, to open and close the air inlet and the air inlet in the upper end of the filter cover By providing an auxiliary door, regardless of the shape of the internal and external air switching doors (plate, dome, cylindrical, hemispherical, etc.), the internal air inflow mode can be partially introduced to improve the heating performance. There has been proposed a vehicle blower that has improved and reduced manufacturing costs.

However, the blower, there is a problem that the auxiliary door is less open by being interrupted by the outside air flowing through the outside air inlet when the auxiliary door is operated (opening the inlet hole) in the outdoor air inlet mode, Accordingly, there is a problem that the heating performance is reduced by reducing the inflow of the bet introduced through the bet inlet hole.

In addition, when the auxiliary door is opened, the auxiliary door is shaken while hitting the outdoor air introduced through the outside air inlet, thereby causing noise.

On the other hand, in the outdoor air inflow mode, the problem that the secondary door is less open by being disturbed by the outdoor air flowing through the outdoor air inlet, the same problem occurred in the Japanese Utility Model Publication No. 57-76120 described earlier.

An object of the present invention for solving the above-mentioned problems is a cover for enclosing the auxiliary door in the inside of the intake duct in a structure in which the air inlet means for introducing a portion of the bet to the filter cover to improve the heating performance in the outdoor air inlet mode By having a, when the auxiliary door is operating is not hindered by the outside air flowing through the outside air inlet is made smoothly the operation of the auxiliary door, and also prevent the shaking of the auxiliary door and accordingly the vehicle blowing air To provide a device.

The present invention for achieving the above object is an intake duct installed inside and outside air conversion doors to open and close the inlet, the outside air inlet, and coupled to the lower portion of the intake duct and a scroll case provided with a blowing fan therein, the intake An air filter inserted between the duct and the scroll case, the filter unit and the frame unit, an air filter, a filter cover that is detachably coupled to the inlet of the storage chamber and seals the storage chamber, and penetrates the filter cover. In the air blowing device for a vehicle comprising an air inlet formed to be formed and the auxiliary door coupled to the filter cover to open and close the air inlet hole, the air inlet mode to improve the heating performance by introducing a portion of the bet in the outdoor air inlet mode In the outside air inlet mode, when the auxiliary door is operated, the outside flowing through the outside air inlet So as not to interfere by, and the upstream-side space of the air filter, the inside of the intake duct being provided with a cover which defines a space communicating with the outside-air inlet space and communicating the inlet ball and the bet.

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

Repeated description of the same construction and operation as in the prior art will be omitted.

5 is an exploded perspective view showing a vehicle blower according to the present invention, Figure 6 is a combined cross-sectional view showing a state in which the auxiliary door is closed in the vehicle blower according to the invention, Figure 7 is assisted in the vehicle blower according to the present invention 8 is a cross-sectional view illustrating a state in which the door is opened, and FIG. 8 is a cross-sectional view illustrating a state in which a lower end of the cover extends to an inner lower end of the filter unit in FIG. 7.

As shown, the blower 100 according to the present invention is the intake duct 110 is formed through the internal air inlet 111 and the outdoor air inlet 112 on the upper side, rotatable inside the intake duct 110 It is installed to be coupled to the internal and external air conversion door 115 to selectively open and close the internal and external air inlet 111, 112, and the intake duct 110, and also flows into the inside of the intake duct 110 It is configured to include a scroll case 120 is provided with a blowing fan 123 for forcibly blowing the internal and external air to the inlet side 43 (conventional) of the air conditioning case 40 (conventional).

The internal and external air conversion doors 115 are driven by a separate cable (not shown) or an actuator (not shown) installed on the outside of the blower 100.

In addition, the blower 100 is formed with an outlet 122 extending to one side of the scroll case 120 to be coupled to the inlet side 43 (conventional) of the air conditioning case 40 (conventional).

In addition, between the intake duct 110 and the scroll case 120, a bell mouse (guiding internal and external air introduced through the internal and external air inlets 111 and 112) to the upper side of the blower fan 123 ( 126 is provided with an inlet ring 125 formed therethrough. In the present invention, the inlet ring 125 is integrally formed on the upper side of the scroll case 120.

In addition, a motor 124 is installed below the scroll case 120 to drive the blowing fan 123.

On the other hand, the internal and external air conversion door 115 is a plate made of a rotating shaft 115a rotatably coupled to both side walls of the intake duct 110, and a plate 115b formed on one side of the rotating shaft 115a. Consists of the internal and external air conversion door 115, of course, in the drawings, the internal and external air conversion door 115 is shown in a plate shape, but in addition to this, all other forms such as a dome type, a cylindrical shape, and a hemispherical shape are possible.

In addition, the air filter 130 is detachably coupled to the storage chamber 127 formed between the intake duct 110 and the scroll case 120 to filter impurities in the inflowing air.

The air filter 130 is formed to be folded in a zigzag form, the filter unit 131 for filtering the air, the filter unit 131 is seated, and the frame unit 132 surrounding the circumference of the filter unit 131 It is composed. At this time, the filter cover 135 is detachably coupled to the inlet of the storage chamber 127 to seal the storage chamber 127.

Here, the frame part 132 and the filter cover 135 of the air filter 130 may be integrally formed or may be formed as separate components. In the drawing, the frame part 132 and the filter cover 135 are integrally formed.

On the other hand, the upper and lower ends of the filter cover 135 is formed with an elastic rib 135a to be elastically fixed and separated when coupled to the inlet of the storage chamber 127.

In the blower device 100, in the internal air inlet mode, the internal and external air switching doors 115 open the internal air inlet 111 and the external air inlet 112 is sealed, and at this time, the air blower fan 123 The bet introduced through the air inlet 111 by operation moves through the bell mouse 126 to the scroll case 120 and is forcedly blown into the air conditioning case 40 (conventional).

In addition, in the external air inlet mode, the internal and external air conversion door 115 seals the internal air inlet 111 and the external air inlet 112 is opened. In this case, the external air inlet ( The outside air introduced through 112 moves through the bell mouse 126 to the scroll case 120 and is forcedly blown into the air conditioning case 40 (conventional).

In addition, the filter cover 135 is provided with the air inlet means 140 to improve the heating performance by introducing a part of the air in the outdoor air inlet mode.

The internal air inflow means 140 is coupled to the internal air inlet hole 136 formed through the upper end of the filter cover 135 and the coupling means 150 to the upper end of the inner surface of the filter cover 135 to the internal air inflow The auxiliary door 137 opens and closes the ball 136, and the auxiliary door 137 is opened by a negative pressure generated in the intake duct 110 when the blowing fan 123 rotates.

That is, in the external air inflow mode, when the blowing fan 123 is rotated, the outdoor air is sucked through the external air inlet 112, and in this case, a negative pressure is generated in the intake duct 110 so that the auxiliary door 137 ) Is opened inward by the pressure difference and at the same time by opening the internal air inlet 136, the internal air is introduced through the internal air inlet 136.

Here, the auxiliary door 137 is preferably made of an elastic material, for example, a cloth or a thin rubber may be used. Therefore, when the negative pressure in the intake duct 110 is generated by the rotation of the blowing fan 123, the auxiliary door 137 of the elastic material can be easily opened, and when the blowing fan 123 stops, As a result of the positive pressure occurring in the intake duct 110, the auxiliary door 137 of the elastic material is closed to close the internal air inlet 136.

In addition, the coupling means 150 for fixing / coupling the auxiliary door 137 to the filter cover 135 includes a plurality of coupling holes 151 formed at the upper ends of the filter cover 135 and the auxiliary door 137. ) And a plurality of protrusions 152a are formed to be fitted into the coupling hole 151, and the fixing member 152 fixes the upper end of the auxiliary door 137 to the filter cover 135.

Therefore, in the state in which the coupling hole 151 formed in the filter cover 135 and the coupling hole 151 formed in the auxiliary door 137 coincide, the protrusion 152a of the fixing member 152 is coupled to the coupling hole 151. By fitting to the) will be able to easily fix the auxiliary door (137).

In addition, the present invention, the intake duct so as not to be disturbed by the outside air flowing through the outside air inlet 112 when the auxiliary door 137 is operated (opening the inside inlet hole) in the outside air inlet mode. The cover 110 partitions the upstream space of the air filter 130 into a space (a) in communication with the outside air inlet 112 and a space (b) in communication with the inside air inlet hole 136 ( 160 is provided.

The cover 160 is preferably formed in a curved shape that is coupled to the filter cover 135 side and surrounds the auxiliary door 137 so as not to interfere with the operation of the auxiliary door 137.

That is, the cover 160 is formed such that the lower end is curved in the inner downward direction while the upper end is coupled to the upper end side of the filter cover 135. Of course, the cover 160 may be any shape as long as the cover 160 may surround the auxiliary door 137 so as not to be disturbed by outside air when the auxiliary door 137 is operated.

Here, the method of coupling the cover 160 to the filter cover 135 side, the cover 160 may be integrally formed on the filter cover 135 side, as shown in the auxiliary door The cover 160 may be integrally formed on the fixing member 152 side, which is a coupling means 150 for coupling the 137 to the filter cover 135.

When the cover 160 is integrally formed on the fixing member 152 side, the cover 160 may be detachably coupled to the filter cover 135 side.

In addition, the longitudinal width of the cover 160 is preferably equal to or greater than the longitudinal width of the auxiliary door 137 so as to completely wrap the auxiliary door 137.

In addition, side walls 161 are formed at both ends of the cover 160 in the filter cover 135 side to close both ends of the cover 160. Accordingly, the cover 160 having the sidewalls 161 formed thereon is covered not only with the auxiliary door 137 but also with the internal air inlet hole 136 through the external air inlet 112 when the auxiliary door 137 operates. It is not affected by the incoming air at all.

On the other hand, the lower end of the cover 160 may be formed to extend only to the upper side of the filter unit 131 of the air filter 130, as shown in Figure 8, so as to extend to the inner lower end of the filter unit 131 It may be formed.

As described above, the vehicle blower 100 according to the present invention has a structure in which the internal air inlet means 140 is installed in the filter cover 135, when the auxiliary door 137 operates, the external air inlet port. The cover 160 is installed to surround the auxiliary door 137 on the inner side of the filter cover 135 which is the inner side of the intake duct 110 so as not to be disturbed by the outside air introduced through the 112.

Therefore, when the outside air is sucked through the outside air inlet 112 by the rotation of the blower fan 123 in the outside air inlet mode, the auxiliary door 137 is opened inward by the pressure difference and at the same time the inlet air inlet. By opening the ball 136, through the bet inlet 136 is also introduced into the bet. At this time, since the space (a) of the outside air inlet 112 and the space (b) of the inside air inlet hole 136 are partitioned by the cover 160, the outside air when the auxiliary door 137 operates. It is not disturbed by outside air introduced through the inlet 112.

According to the present invention, by installing a cover surrounding the auxiliary door in the inside of the filter cover that is the inside of the intake duct, when the auxiliary door is operated in the outdoor air inlet mode by the outside air flowing through the outside air inlet The operation of the auxiliary door is smoothly performed without being disturbed.

In addition, since the cover does not collide with the outside door and the auxiliary door introduced through the outside air inlet, the shaking of the auxiliary door is prevented and thus the noise is also prevented.

Claims (4)

An intake duct 110 having internal and external air conversion doors 115 installed therein to open and close the internal and external air inlets 111 and 112, A scroll case 120 coupled to the lower portion of the intake duct 110 and having a blowing fan 123 installed therein; The air filter 130 is inserted into the storage chamber 127 provided between the intake duct 110 and the scroll case 120, and composed of a filter unit 131 and a frame unit 132, A filter cover 135 detachably coupled to an inlet of the storage chamber 127 to seal the storage chamber 127; It is composed of the air inlet hole 136 formed through the filter cover 135 and the auxiliary door 137 coupled to the filter cover 135 to open and close the air inlet hole 136 to bet in the air inlet mode. In the vehicle blower comprising a portion of the inflow means 140 to improve the heating performance by inflow, In the outside air inflow mode, the upstream side of the air filter 130 inside the intake duct 110 so as not to be disturbed by the outside air flowing through the outside air inlet 112 when the auxiliary door 137 is operated. A cover blower (160) is provided for partitioning a space into a space (a) in communication with the outside air inlet (112) and a space (b) in communication with the inside air inlet (136). The method of claim 1, The cover 160 is coupled to the filter cover 135 side and is formed in a curved shape surrounding the auxiliary door 137 so as not to interfere with the operation of the auxiliary door 137 Device. The method of claim 2, Vehicle blowers, characterized in that the side wall 161 is formed at both ends of the cover 160 in the filter cover 135 side direction. The method of claim 2, The lower end of the cover 160 is a vehicle blower, characterized in that extending to the inner bottom of the filter unit (131).

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