KR101278892B1 - Blower for Vehicles - Google Patents

Abstract

The present invention relates to a blower for a vehicle, and more particularly, the maximum opening of the auxiliary door to the filter cover in a structure in which the air inlet means for introducing a portion of the bet in the filter cover is installed in order to improve the heating performance in the outdoor air inlet mode. By forming the protrusion integrally to reduce the contact area with the auxiliary door on the lower side of the support plate is installed to limit the amount, while reducing the manufacturing cost while reducing the contact noise with the auxiliary door during opening and closing of the auxiliary door It relates to a vehicle blower that can be.

Accordingly, the present invention, the intake duct 110 having internal and external air inlets 111 and 112, and the scroll case 120 is coupled to the lower portion of the intake duct 110 and the blowing fan 123 is installed therein. And an air filter 130 inserted into a storage chamber 127 provided between the intake duct 110 and the scroll case 120 and comprising a filter unit 131 and a frame unit 132. A filter cover 135 detachably coupled to an inlet of the seal 127 to seal the storage chamber 127, an air inlet 136 and a air inlet 136 formed through the filter cover 135. Auxiliary door 137 coupled to the filter cover 135 to open and close a) is provided in the air inlet mode 140 and the filter cover 135 to improve the heating performance by introducing a portion of the bet in the air inlet mode; In addition, including a support plate 153 for limiting the maximum opening amount of the auxiliary door 137 In the blower for a vehicle, the lower surface of the support plate 153 is formed integrally with the projections (154a, 154b) to reduce the contact area with the auxiliary door 137 to reduce noise during contact. It is characterized by.

Blower, Air Filter, Filter Cover, Auxiliary Door, Support Plate, Projection

Description

Blower for Vehicles

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a configuration diagram showing a general automotive air conditioner,

2 is a cross-sectional view showing a general air blowing device for a vehicle,

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;

Figure 8 is a perspective view showing another embodiment of the protrusion formed on the support plate in the vehicle blower according to the present invention.

Description of the Related Art [0002]

100: blower 110: intake duct

111: inlet for inlet 112: outside inlet

115 Internal / external switching door 115a:

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 part

132: frame portion 135: filter cover

135a: elastic rib 136: inlet hole

137: auxiliary door 139: guide

140: betting means 150: coupling means

151: coupling hole 152: fixing member

152a: hook 153: support plate

154a, 154b: protrusions

The present invention relates to a blower for a vehicle, and more particularly, the maximum opening of the auxiliary door to the filter cover in a structure in which the air inlet means for introducing a portion of the bet in the filter cover is installed in order to improve the heating performance in the outdoor air inlet mode. By forming the protrusion integrally to reduce the contact area with the auxiliary door on the lower side of the support plate is installed to limit the amount, while reducing the manufacturing cost while reducing the contact noise with the auxiliary door during the opening and closing operation of the auxiliary door It relates to a vehicle blower that can be.

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. 10-2006-0088034 (filed on Sep. 12, 2006), filed by the applicant of the present invention as a technique for solving the above problem, opens and closes the air inlet and the air inlet at 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.

In addition, the filter cover is provided with a support plate for limiting the maximum opening amount of the auxiliary door, the lower side of the support plate is attached to a separate seal member to prevent noise when the auxiliary door contacts.

However, the technology solves the problem of noise generated when the auxiliary door is in contact with the seal member when the auxiliary door is opened to the maximum. However, a separate seal member must be attached to the lower side of the support plate. There was a problem that the manufacturing process and manufacturing costs increase.

An object of the present invention for solving the above-mentioned conventional problems is to integrally the projection to reduce the contact area with the auxiliary door on the lower side of the support plate is installed to limit the maximum opening amount of the auxiliary door to the filter cover The present invention provides a blower for a vehicle that can reduce the manufacturing noise and the noise of contact with the auxiliary door during the opening and closing operation of the auxiliary door while reducing the manufacturing process and manufacturing cost.

The present invention for achieving the above object is provided between the intake duct having an internal and outdoor air inlet, a scroll case coupled to the lower portion of the intake duct and a blower fan installed therein, and between the intake duct and the scroll case. An air filter, which is inserted into a storage compartment and is composed of a filter unit and a frame unit, is detachably coupled to an inlet of the storage chamber to seal the storage chamber, an air inlet formed through the filter cover, and the air inflow. The auxiliary door is coupled to the filter cover to open and close the ball, the air inlet means for improving the heating performance by introducing a portion of the bet in the outdoor air inlet mode, and installed on the filter cover and limit the maximum opening amount of the auxiliary door In the vehicle blower comprising a support plate to the, the lower side of the support plate It is characterized in that the projection is integrally formed to reduce noise upon contact to reduce the contact area and the side door.

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

Repeated explanations of the same configuration and operation as those in the conventional art will be omitted.

Figure 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 present invention, Figure 7 is assisted in the vehicle blower according to the present invention 8 is a perspective view showing another embodiment of the protrusion formed on the support plate in the vehicular blower according to the present invention.

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 The blower fan 123 for forcibly blowing the internal and external air to the inlet side 43 (conventional) of the air conditioning case 40 (conventional) is configured to include a scroll case 120 installed therein.

The inside / outside switching door 115 is driven by a separate cable (not shown) or an actuator (not shown) provided outside the blowing device 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).

Between the intake duct 110 and the scroll case 120, a bell mouth (not shown) for guiding the inside and outside air introduced through the inside and outside air inflow ports 111 and 112 to the upper side of the blowing fan 123 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.

At this time, the filter unit 131 seated on the frame unit 132 and the filter cover 135 formed integrally on one side of the frame unit 132 are preferably spaced apart from each other. That is, because the filter cover 135 is provided with the air inlet means 140 to be described below to prevent the interference occurs during the opening and closing operation of the air inlet means 140 for this purpose of the air inlet means 140 The filter unit 131 is omitted in the operating section.

As such, when the air inflow means 140 is installed in the filter cover 135, the frame part 132 spaces the filter part 131 from the filter cover 135 at a predetermined interval so that the air inflow is formed therebetween. It creates a space in which the means 140 can operate.

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.

The blower 100, in the internal air inlet mode, the internal and external air conversion door 115 opens the internal air inlet 111 and the external air inlet 112 is sealed, the operation of the blower fan 123 The bet introduced through the air inlet 111 is moved to the scroll case 120 through the bell mouse 126 and then 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 inlet means 140 is coupled to the internal air inlet hole 136 formed through the filter cover 135 and the upper end of the inner surface of the filter cover 135 by the coupling means 150 and the internal air inlet hole ( The auxiliary door 137 opens and closes 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 outdoor air inflow mode, when the blowing fan 123 is rotated, the outdoor air is sucked through the external air inlet 112, at which time 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 may include a plurality of coupling holes 151 formed at an upper end of the filter cover 135 and the auxiliary door 137. ) And a plurality of hooks 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, the coupling hole 151 of the fixing member 152 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 are matched. By fitting to the) will be able to easily fix the auxiliary door (137).

On the other hand, the auxiliary door 137 is preferably installed to be inclined inward. That is, by forming the guide 139 inclined inwardly in the inlet hole 136, the initial position of the auxiliary door 137 supported by the guide 139 may be inclined inward.

Thus, by installing the auxiliary door 137 inclined, it is possible to obtain the effect of increasing the area of the air inlet hole 136, thereby increasing the amount of air inside the limited space.

Here, the guide 139 is preferably formed in the form of a net to allow the inflow of air.

In addition, the filter cover is provided with a support plate 153 so as to limit the maximum opening amount of the auxiliary door 137.

The support plate 153 is integrally formed at the lower end of the fixing member 152 that is the coupling means 150, but is formed to be inclined at a predetermined angle in the downward direction.

Therefore, at the maximum opening of the auxiliary door 137, the auxiliary door 137 is supported on the lower side of the support plate 153 to prevent shaking.

In addition, protrusions 154a and 154b are integrally formed on the lower side of the support plate 153 so as to reduce the contact area with the auxiliary door 137 to reduce noise during contact.

The protrusions 154a and 154b may be formed in various shapes as shown in FIGS. 5 and 8.

First, the protrusion 154a illustrated in FIG. 5 is formed to protrude in the longitudinal direction (the direction perpendicular to the inflow direction of the bet introduced into the inflow hole) on the lower surface of the support plate 153.

Here, the protrusion 154a is formed by bending the end of the support plate 153 downward.

At this time, it is preferable that the end of the protrusion 154a is pointed to be in line contact with the auxiliary door 137.

Meanwhile, in FIG. 5, the protrusion 154a is integrally formed on the lower surface of the support plate 153 along the longitudinal direction, but may be formed by dividing into a plurality of parts.

Next, the protrusion 154b illustrated in FIG. 8 is formed to protrude in the width direction (the same direction as the inflow direction of the bet introduced into the inflow hole) on the lower surface of the support plate 153.

Here, the protrusion 154b is formed on the lower side of the support plate 153 by a predetermined interval spaced apart from each other, wherein, the end of the protrusion 154b is pointed to be in line contact with the auxiliary door 137 It is preferably formed.

On the other hand, the end of the protrusion 154b shown in Figure 8 is formed to be inclined with respect to the lower side of the support plate 153.

As described above, the vehicular blower 100 according to the present invention is in line contact with the auxiliary door 137 on the lower side of the support plate 153 which limits the maximum opening amount of the auxiliary door 137. The protrusions 154a and 154b are formed in the longitudinal direction or the width direction so as to be possible.

Accordingly, when the auxiliary door 137 is opened or closed, that is, when the auxiliary door 137 is opened to the maximum, the auxiliary door 137 protrudes from the lower surface of the support plate 153. By being in line contact with the 154a and 154b, it is possible to reduce noise generated when the auxiliary door 137 contacts.

According to the present invention, by forming a protrusion integrally in contact with the auxiliary door on the lower side of the support plate is installed in the filter cover to limit the maximum opening amount of the auxiliary door, while reducing the manufacturing process and manufacturing cost When the opening and closing operation of the auxiliary door can reduce the noise of contact with the auxiliary door.

Claims (6)

An intake duct 110 having 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. Partly inflow means and the inflow means 140 to improve the heating performance, In the blower for a vehicle comprising a support plate 153 installed on the filter cover 135 and limiting the maximum opening amount of the auxiliary door 137, Vehicle blower, characterized in that the lower side of the support plate 153 is formed integrally with the projections (154a) (154b) to reduce the contact area with the auxiliary door (137) to reduce the noise during contact. The method of claim 1, The protrusion 154a is a vehicle blower, characterized in that the protrusion formed in the longitudinal direction of the support plate (153). The method of claim 2, The protruding portion (154a) is a vehicle blower, characterized in that formed to be bent downward in the end portion of the support plate (153). The method of claim 1, The protrusion 154b is a vehicle blower, characterized in that the protrusion formed in the width direction of the support plate (153). 5. The method of claim 4, End of the protrusion (154b) is a vehicle blower, characterized in that formed inclined with respect to the lower side of the support plate (153). The method of claim 1, The end of the protrusion (154a) (154b) is a vehicle blower, characterized in that the pointed so as to be in line contact with the auxiliary door (137).

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