KR101145128B1 - Blower for Vehicles - Google Patents

Abstract

The present invention relates to a blower for a vehicle, and more particularly, to an internal and external air conversion door (such as a plate or dome type) by providing an air inlet hole and an auxiliary door for opening and closing the air inlet hole at the upper end of the filter cover. Regardless of the external air inflow mode, a part of the bet is introduced to improve the heating performance, and also the installation and configuration is simple, and relates to a vehicle blower for improved productivity and reduced manufacturing costs.

Accordingly, the vehicle blower of the present invention includes a bet-flow inlet means 140 to improve the heating performance by introducing a portion of the bet in the outdoor air inlet mode, the air inlet means 140 is the upper end of the filter cover 135 An air inlet 136 formed to be positioned higher than the air filter 130 and an auxiliary door coupled to the upper end of the inner surface of the filter cover 135 by a coupling means 150 to open and close the air inlet 136. Characterized in that (137).

Air conditioner, blower, air filter, filter cover, air inlet, auxiliary door

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 a first embodiment of the present invention;

6 is a cross-sectional view of FIG.

7 is a cross-sectional view showing a vehicular blower according to a second embodiment of the present invention;

8 is a cross-sectional view showing a vehicular blower according to a third embodiment of the present invention;

9 is a perspective view illustrating an air filter and a filter cover of a vehicle blower according to a fourth embodiment of the present invention;

FIG. 10 is a cross-sectional view illustrating a vehicle blower in which the air filter and the filter cover of FIG. 9 are combined.

Description of the Related Art [0002]

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 138: extension

139: Guide

140: betting means 150: coupling means

151: coupling hole 152: fixing member

152a: protrusion

The present invention relates to a blower for a vehicle, and more particularly, to an internal and external air conversion door (such as a plate or dome type) by providing an air inlet hole and an auxiliary door for opening and closing the air inlet hole at the upper end of the filter cover. Regardless of the external air inflow mode, a part of the bet is introduced to improve the heating performance, and the installation and configuration is simple, and the present invention relates to a vehicle blower which has improved productivity and reduced manufacturing costs.

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. An air filter 25 configured to filter the impurities in the air, which is composed of the unit 26 and the frame unit 27, and 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 to solve 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. It is.

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.

An object of the present invention for solving the above-mentioned conventional problems is to provide an air inlet hole and an auxiliary door for opening and closing the air inlet hole at the upper end of the filter cover, so as to relate to the shape of the internal and external air conversion doors (plate or dome type, etc.). It is to provide a vehicle blower that improves the heating performance, and the installation and configuration is simple to improve the heating performance by the partial inflow of the bet in the outdoor air inflow mode.

The present invention for achieving the above object is an air intake duct installed inside and outside air conversion doors to open and close the internal and external air inlet, and coupled to the lower portion of the intake duct and the inside and outside air introduced into the interior of the intake duct A scroll case provided with a blowing fan for forced air blowing to the case side, inserted into a storage compartment provided between the intake duct and the scroll case, and an air filter composed of a filter portion and a frame portion, and detachably attached to an entrance of the storage chamber. In the blower for a vehicle comprising a filter cover coupled to seal the storage compartment and the upstream side of the blower fan to improve the heating performance by introducing a portion of the bet in the air inlet mode, the air blower Means are formed in the filter cover, the means and the air filter in the height direction of the air filter The air inlet hole is formed to overlap a range, the auxiliary door is coupled to the upper end of the inner surface of the filter cover to open and close the air inlet hole, and formed on the inner surface of the filter cover and the opening and closing operation of the auxiliary door And an extension part spaced apart from the auxiliary door and the air filter at an interval not interfering with the air filter. When the auxiliary door closes the air inlet, a lower end thereof is located below the upper part of the air filter. Extension portion is characterized in that it is formed to flow the entire bet introduced into the air inlet to the upper side of the air filter.

Hereinafter, preferred embodiments of 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 vehicular blower according to a first embodiment of the present invention, Figure 6 is a combined cross-sectional view of FIG.

As shown, the blower 100 according to the present invention is the intake duct 110 and the inlet air inlet 111 and the outside air inlet 112 is formed on the upper side, and rotatably inside the intake duct 110 Is installed and coupled to the internal and external air conversion door 115 for selectively opening and closing the internal and external air inlet (111, 112), the intake duct 110 and introduced into the inside of the intake duct 110 It comprises a scroll case 120 is provided with a blowing fan 123 for forcibly blowing the internal and outdoor 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 air filter 130 and the filter cover 135 may be integrally formed or may be formed as separate components.

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.

Therefore, in the air inflow mode, the internal and external air conversion door 115 opens the air inlet 111 and the air inlet 112 is sealed, and the air inlet 111 is operated by the operation of the blower fan 123. The bet introduced through) 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 the blower 100, the upstream side of the blower fan 123 is provided with the air inlet means 140 to improve the heating performance by introducing a portion of the bet in the air inlet mode.

The air inflow means 140 is coupled to the air inlet hole 136 formed to penetrate the filter cover 135 so that the upper end is higher than the air filter 130, the upper end of the inner surface of the filter cover 135 Auxiliary door 137 is coupled to the means 150 to open and close the air inlet hole 136, the auxiliary door by the negative pressure generated in the intake duct 110 when the blowing fan 123 is rotated 137 is made to open.

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 this 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 hole 136, the internal air is introduced through the internal air inlet hole 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.

On the other hand, the location of the air inlet hole 136 and the auxiliary door 137 is preferably installed on the upper side with respect to the center line (C) of the air filter 130.

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 an upper end of the filter cover 135 and the auxiliary door 137. And, a plurality of protrusions (152a) are formed to fit in the coupling hole 151 is made of a fixing member 152 for fixing 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).

On the other hand, the upper end of the air inlet hole 136 is formed to be located higher than the air filter 130 or the position of the air inlet hole 136 is installed on the upper side relative to the center line (C) of the air filter 130 It can facilitate the inflow of bets and the inflow of the bets is maximum.

7 is a cross-sectional view illustrating a vehicle blower according to a second exemplary embodiment of the present invention. As shown in the drawing, the air filter 130 may be inserted into an inclined downward direction to the inside air inlet hole 136. That is, by lowering one side in the state in which the air filter 130 is inserted into the storage chamber 127, the air filter 130 may be inclined downward toward the air inlet hole 136.

Therefore, the air filter 130 is mounted to be inclined downward toward the inlet air inlet 136 to increase the inflow area of the inlet through the inlet air inlet 136, thereby facilitating the inlet of the inlet.

FIG. 8 is a cross-sectional view illustrating a vehicle blower according to a third exemplary embodiment of the present invention. As shown in FIG. 8, a position of the internal air inlet hole 136 and the auxiliary door 137 is illustrated in the center line of the air filter 130. C) is installed on the upper side, and on the inner side of the filter cover 135 is formed an extension 138 spaced apart from the air inlet hole 136 and the air filter 130 by a predetermined interval. The lower ends of the air inlet hole 136 and the auxiliary door 137 are installed to partially overlap the upper end of the air filter 130 in the up and down directions.
Here, the air inlet hole 136 is formed to overlap a predetermined range with the air filter 130 in the height direction of the air filter 130, the extension portion 138 is the lower side of the side of the air filter 130 While supporting the guided bet introduced through the air inlet hole 136 to the top of the air filter 130, and at the interval that does not interfere with the air filter 130 during the opening and closing operation of the auxiliary door (137) To support the lower side of the side of the air filter 130 on the inner surface of the filter cover 135 so as to secure the rotation space of the auxiliary door 137 by separating the auxiliary door 137 and the air filter 130. Is formed extending.
At this time, when the auxiliary door 137 closes the inlet hole 136, the lower end thereof is positioned below the upper portion of the air filter 130, and the extension part 138 is the inlet hole ( The entire bet introduced to the 136 flows to the upper side of the air filter 130.

That is, since the air filter 130 is installed to be spaced apart from the air inlet hole 136 and the auxiliary door 137 by the extension part 138, the air filter 130 during the opening and closing operation of the auxiliary door 137. And interference does not occur so that the installation height of the air inlet hole 136 and the auxiliary door 137 can be lowered, so that the height of the filter cover 135 can be made smaller, and thus the filter cover 135 only. Not only the blower 100 can be compact.

Here, the length of the extension portion 138 is preferably equal to or larger than the length of the auxiliary door 137 to prevent interference with the air filter 130 when the auxiliary door 137 rotates.

FIG. 9 is a perspective view illustrating an air filter and a filter cover of a vehicle blower according to a fourth exemplary embodiment of the present invention, and FIG. 10 is a cross-sectional view of the vehicle blower combined with the air filter and the filter cover of FIG. 9. As described above, the auxiliary door 137 is 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.

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

As described above, the vehicle blower 100 according to the present invention, the air inlet hole 136 is formed in the upper end of the filter cover 135, the inner air inlet of the filter cover 135, the air inlet The auxiliary door 137 for opening and closing the ball 136 is fixed / coupled to the coupling means 150.

Thereafter, when the driver selects the external air inflow mode by operating the blower mode switching switch of the air conditioning controller, the internal and external air conversion doors 115 are driven toward the internal air inlet 111 by the actuator. As it rotates, the inside inlet 111 is closed and the outside air inlet 112 is opened.

At this time, while the negative pressure is applied to the inside of the intake duct 110 by the rotation of the blower fan 123, the pressure difference with the vehicle interior is generated. Due to this differential pressure, the auxiliary door 137 of the elastic material that has closed the internal air inlet 136 is elastically deformed inward, and the internal air inlet 136 is opened to open the internal air inlet 136. A portion of the bet is introduced into the intake duct 110 through).

Therefore, the outside of the intake duct 110 is introduced into the outside air through the outside air inlet 112 and at the same time through a portion of the inside through the inside air inlet 136 to operate the heater in cold weather, such as winter. At this time, the air of the air conditioner (1: conventional) is heated by being introduced into the blower (100) and blown toward the air-conditioning case (40: conventional) in a state where the air of the low temperature outside the vehicle and the indoor air of the relatively high temperature are mixed. It can improve performance.

In addition, in the prior art, the structure for introducing a portion of the internal air inflow mode could be configured only in the plate-type internal and external air conversion doors, and the internal and external air conversion doors of the dome type or other forms (cylindrical, hemispherical, etc.) were not possible, but the present invention Is the shape of the internal and external air conversion door 115 by installing the air inlet means 140 to allow a part of the bet in the air inflow mode to the upper end side of the filter cover 135 upstream of the blowing fan 123 (plate type) Regardless of the type of dome, etc.), it is possible to introduce a portion of the bet in the inflow mode, thereby improving heating performance.

According to the present invention described above, by providing an air inlet hole and an auxiliary door made of an elastic material for opening and closing the air inlet at the upper end of the filter cover, external air inflow regardless of the shape (plate or dome type) Part of the bet inflow mode improves the heating performance, and is simple to install and configure, improving productivity and reducing manufacturing costs.

In addition, since the air filter is inclined toward the inlet hole, the inflow area of the bet through the inlet hole can be increased to smoothly inflow of the bet.

In addition, by installing the location of the air inlet hole and the auxiliary door on the upper side with respect to the center line of the air filter, it is possible to smoothly inflow of the internal air as well as to maximize the air inflow amount.

And, by forming an extension on the inner surface of the filter cover to separate the air filter from the air inlet hole and the auxiliary door it is possible to lower the installation height of the air inlet hole and the auxiliary door to make the height of the filter cover small This makes it possible to compact the blower as well as the filter cover.

Claims (7)

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, The scroll case 120 is coupled to the lower portion of the intake duct 110 and installed with a blowing fan 123 for forcibly blowing internal and external air introduced into the intake duct 110 to the air conditioning case 40. 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; In the upstream side of the blower fan 123 is installed in the vehicle air blowing device comprising an air inlet means 140 to improve the heating performance by introducing a portion of the internal air inflow mode, The bet inlet means 140, Is formed in the filter cover 135, the air inlet hole 136 is formed to overlap a predetermined range with the air filter 130 in the height direction of the air filter 130, Is coupled to the upper end of the inner side of the filter cover 135 by the coupling means 150 to open and close the air inlet 136, the lower end of the air filter 130 when closing the air inlet 136 An auxiliary door 137 located below the upper part, While supporting the lower side of the air filter 130 to guide the bet introduced through the air inlet hole 136 to the top of the air filter 130, the auxiliary door 137 and the air filter 130 The extension part 138 is formed to extend to support the lower side of the air filter 130 on the inner surface of the filter cover 135 so as to secure the rotation space of the auxiliary door 137 by spaced apart, Position of the air inlet hole 136 and the auxiliary door 137 is installed on the upper side based on the center line (C) of the air filter 130, The auxiliary door 137 is a vehicle blower, characterized in that installed inclined in the inward direction by the guide 139 is formed to be inclined in the air inlet hole (136). delete delete The method of claim 1, The coupling means 150 has a plurality of coupling holes 151 formed at the upper end of the filter cover 135 and the auxiliary door 137, and a plurality of protrusions 152a to be fitted into the coupling hole 151. The blower for the vehicle, characterized in that formed of a fixing member (152) for fixing the upper end of the auxiliary door (137) to the filter cover (135). delete The method of claim 1, The length of the extension portion (138) is a vehicle blower, characterized in that the same or greater than the length of the auxiliary door (137). delete

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