KR20040036290A - Blower for car air conditioning device - Google Patents

Abstract

PURPOSE: A blower for an air conditioner of a vehicle is provided to smoothly discharge rain introduced into the blower and prevent the backflow of the rain caused by the blowing pressure, thereby improving the pleasant feeling in a vehicle. CONSTITUTION: A blower for a vehicle air conditioner includes an inlet duct, an inlet ring and a scroll case coupled in series. The inlet duct is formed with inside air inlets, an outside air inlet, and a rotatable door for alternatively opening/closing the inside/outside air inlets. The air introduced via the inside/outside air inlets passes to the scroll case via a bellmouth formed in the center of the inlet ring. The inlet ring is further formed with drain holes at edge parts to discharge rain introduced via the inside/outside air inlets to the scroll case. The scroll case(100) has a blowing chamber(120) in the scroll shape, a blower mounted in the blowing chamber, and a motor for driving the blower. Drain channel(110) are formed outside the blowing chamber for temporarily receiving the drain discharged via the drain holes. The drain channel is communicated with the blowing chamber, and formed with an acute angle(α) with respect to a wall surface(120a) of the blowing chamber, so that the drain channel is inclined in the direction equal to air flow direction in the blowing chamber generated by the rotation of the blower.

Description

Blower for car air conditioning device

The present invention relates to a blower for a vehicle air conditioner, and more particularly, the drainage inclined in the same direction as the air flow direction so that the rain can be smoothly discharged through the drainage formed in the scroll case when the rain water is introduced into the blower It relates to a blower for an automotive air conditioner formed at an acute angle with respect to the wall surface of the blower.

An air conditioner of a vehicle is a device for cooling or heating an interior of an automobile by introducing air inside / outside the vehicle and heating or cooling the air to blow into the interior of the vehicle. As shown in FIG. The inlet duct 10 and the inlet duct are formed on one side of the outside air inlet duct 12 and the outside air inlet duct (13) for selectively opening and closing the internal and external air inlet (11, 12) according to the internal and external air mode. (10) a scroll case 30 coupled to the lower side and provided with a blower 31 for forcibly blowing air introduced into the inlet duct 10 to the inlet side 54 of the air conditioning case 50 and the inlet duct ( 10) and a blower (40) composed of an inlet ring (20) coupled between the scroll case (30) and dividing the interior into an inlet chamber (15) and a blower chamber (33), respectively, and to the blower (31). Inlet side 54 into which air blown by the air flows in and the air is discharged The air conditioner case 50 is provided with an exit side 55 and a plurality of mode doors 53 for controlling the flow of air, and the evaporator 51 and the heater core 52 are sequentially provided at regular intervals therein. Is composed of

2 is an enlarged exploded perspective view of the blower 40, which is not shown in the inlet duct 10 but operates in conjunction with the shaft 14 on the shaft 14 of the conversion door 13. In addition to the operation arm (not shown) is installed, a lever (not shown) for rotating the operation arm is installed in sequence. In addition, the bell mouth 21 is formed at the center of the inlet ring 20 so that the air flowing through the internal and external air inlets 11 and 12 flows to the scroll case 30, and the inner and the external air inlet at the edge side. When the rainwater is introduced through the (11) (12), a plurality of drain holes 22 for discharging it are formed.

Subsequently, in the scroll case 30, a blower chamber 33 in which a blower 31 is installed is formed in a scroll shape, and a motor 32 driving the blower 31 is installed at the lower side of the scroll case 30. A drainage path 34 communicating with the blower chamber 33 is formed so that rain water discharged through the 22 may flow into the blower chamber 33.

That is, the rain water passing through the drain hole 22 is temporarily accommodated in the drainage path 34 and continuously flows into the blowing chamber 33 of the scroll case 30 and flows into the air conditioning case 50 along the air flow. After being discharged through the drain hole 56 of the air conditioning case (50).

The blower 40 rotates the operation arm at an angle by the operation of the lever in the bet mode, and the inlet 11 is opened by the switching door 13 interlocked with the air inlet 12. The air blower 31 is forcibly blown to the evaporator 51 and the heater core 52 installed in the air conditioning case 50 by the blower 31, and the air inlet 11 is sealed while the air inlet 11 is closed in the external air mode. 12 is opened and the outside air is forcibly blown by the blower 31 toward the evaporator 51 and the heater core 52.

On the other hand, in the blower chamber 33, the blowing pressure is largely acted by the rotation of the blower 31, and the drainage path 34 formed to communicate with the blower chamber 33 is formed at right angles to the air flow direction. That is, as shown in FIG. 3, an angle α formed by an arbitrary tangent A with respect to the wall surface 33a constituting the ventilation chamber 33 and the center line B of the drainage channel 34 is perpendicular to each other. In this case, the rainwater introduced into the drainage path 34 temporarily contained therein may not be smoothly discharged into the blower chamber 33 but may be stagnant or flow backward due to the blowing pressure. As a result, the rainwater introduced into the drainage 34 remains in a stagnant state for a long time, causing odors or molds, resulting in problems in the comfort of the vehicle, and thus lowering the performance of the air conditioning apparatus 1. .

An object of the present invention for solving the above-mentioned problems is that the rainwater introduced into the blower is formed at an acute angle with respect to the wall surface of the blower chamber so that the drainage path is inclined in the same direction as the air flow direction in the blower chamber. The present invention provides a blower for an automotive air conditioner that can smoothly discharge and prevent rainwater from flowing back due to blowing pressure to improve comfort in a vehicle and improve the performance of the air conditioner.

The present invention for achieving the above object is an internal and external air conversion door for selectively opening and closing the internal and external air inlet and formed in the upper side with the bell mouth and the inlet ring formed with a plurality of drain holes on the upper side Inlet duct is installed is coupled to the inlet duct, the lower part is formed with a blower is installed inside the blower and the scroll case is provided with a drainage so that the water flowing through the drain hole is discharged into the blower chamber In the blower for the vehicle air conditioner is configured to be coupled, the drainage is formed so that the angle formed by the tangent to the wall surface constituting the ventilation chamber and the centerline of the drainage along the direction of the air flow in the ventilation chamber is an acute angle. It is characterized by.

1 is a schematic configuration diagram showing a general air conditioner,

Figure 2 is an exploded perspective view showing an enlarged conventional blower,

3 is a schematic plan view showing a scroll case in FIG.

Figure 4 is an exploded perspective view showing an enlarged blower according to the present invention,

FIG. 5 is a schematic plan view illustrating the scroll case of FIG. 4.

<Description of Signs of Major Parts of Drawings>

1: air conditioning system 10: inlet duct

11: Bet Inlet 12: Outlet Inlet

13: conversion door 14: shaft

15: Inlet chamber 20: Inlet ring

21: Bellemouth 22: Drainer

30.100: Scrollcase 31: Blower

32: motor 33,120: ventilation chamber

33a, 120a: wall 34,110: drainage

40: blower 41: outlet side

A: Tangent B: Drain centerline

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

The same parts as in the prior art are denoted by the same reference numerals, and repeated description thereof will be omitted.

Figure 4 is an exploded perspective view showing an enlarged blower according to the present invention, Figure 5 is a schematic plan view showing a scroll case in FIG.

As shown, the blower 40 of the present invention is composed of the inlet duct 10, the inlet ring 20 and the scroll case 100 in sequence.

First, the inlet duct 10 has an internal air inlet 11 and an external air inlet 12 formed on the upper side, and an internal and external air conversion door 13 for selectively opening and closing the internal and external air inlets 11 and 12 according to the internal and external air modes. ) Is rotatably installed. In addition, the lower side is opened to allow the air flowing into the internal and external air inlets 11 and 12 to enter the scroll case 100 through the inlet ring 20.

In addition, although not shown in the drawing, a shaft 14 of the conversion door 13 formed to extend outwardly of the inlet duct 10 is provided with an operating arm (not shown) that operates in conjunction with the shaft 14. In addition, one side is connected to the operation arm and the other side is connected to a drive means such as a cable or a motor, a lever (not shown) for rotating the operation arm at a predetermined angle is installed in sequence.

Next, the inlet ring 20 is coupled between the inlet duct 10 and the scroll case 100 so as to divide the upper and lower portions into the inlet chamber 15 and the blowing chamber 120, respectively. In addition, a bell mouse 21 is formed in the center of the inlet ring 20 so that the air flowing through the internal and external air inlets 11 and 12 may flow toward the scroll case 100. In addition, a plurality of drain holes 22 are formed at the edge side to discharge the rainwater through the internal and external air inlets 11 and 12 to the scroll case 100.

The scroll case 100 is coupled to the lower side of the inlet ring 20 and has a scroll-shaped blower 120 having a blower 31 installed therein so as to open upward, and the blower 31 below. Is installed.

In addition, a drainage path 110 may be temporarily formed at a radially outer side of the blower chamber 120 to temporarily receive rainwater discharged through the drain hole 22 of the inlet ring 20. It is formed to communicate with the blowing chamber 120, and is formed to be inclined in the same direction as the air flow direction in the blowing chamber 120 by the rotation of the blower (31). That is, it is preferable that an angle α formed by an arbitrary tangent A to the wall surface 120a constituting the ventilation chamber 120 and the centerline B of the drainage path 110 becomes an acute angle.

When the inlet duct 10, the inlet ring 20, and the scroll case 100 are coupled as described above, the air flowing through the internal and external air inlets 11 and 12 is bellows 21 of the inlet ring 20. ) Flows into the blowing chamber 120 and is then blown to the outlet side 41 of the blower 40 by the rotation of the blower 31.

In addition, the outlet side 41 of the blower 40 is coupled to communicate with the inlet side 54 of the air conditioning case 50 so that the air is heat exchanged while passing through the evaporator 51 and the hitty core 52. It will be discharged to the room.

As described above, the operation of the blower for the vehicle air conditioner according to the present invention will be described.

The blower 40 is the bet inlet 11 is opened by the switching door 13 in the bet mode, the outside air inlet 12 is sealed and the blower 31 is introduced through the bet inlet 11 The blower is forcibly blown to the evaporator 51 and the heater core 52 installed in the air conditioner case 50, and in the external air mode, the air inlet 11 is closed and the air inlet 12 is opened to open the blower. The air 31 is forcibly blown by the outside air to the evaporator 51 and the heater core 52.

When rainwater is introduced into the inlet duct 10 through the internal and external air inlets 11 and 12, the rainwater is discharged to the scroll case 100 through the drain hole 22 of the inlet ring 20. The discharged rain water is temporarily accommodated in the drainage path 110 formed in the scroll case 100, and then continuously flows into the scroll-shaped ventilation chamber 120 of the scroll case 100.

Rainwater introduced into the blower chamber 120 flows into the air-conditioning case 50 along the air flow in the blower chamber 120 by the rotation of the blower 31, and then drain holes formed in the air-conditioning case 50 underneath. Through 56).

Here, the blower 31 in the blower chamber 120 is formed at an acute angle with respect to the wall surface 120a of the blower chamber 120 so that the drainage path 110 is inclined in the same direction as the air flow direction in the blower chamber 120. Even if the blowing pressure due to rotation is large, the reverse flow of rainwater is prevented, and the rainwater temporarily accommodated in the drainage path 110 naturally flows into the blowing chamber 120 along the air flow.

According to the vehicle air conditioner of the present invention as described above, the drainage passage formed in communication with the blowing chamber of the scroll case is formed at an acute angle with respect to the wall surface of the blowing chamber so as to be inclined in the same direction as the air flow direction, thereby into the blower Inflow of rainwater is smoothly discharged along the air flow, and the reverse flow of rainwater is prevented due to the blowing pressure in the ventilation chamber, so that no rainwater stagnates on the drainage path, thereby preventing the occurrence of odor or mold. The comfort of the room is improved to improve the performance of the air conditioning system.

Claims (1)

In addition to the inlet ring 20 formed with a bell mouth 21 and a plurality of drain holes 22 therein, an internal air inlet 11 and an external air inlet 12 are formed on the upper side, and the internal and external air inlets 11 ( Inlet duct 10 which is an internal and external air switching door 13 for selectively opening and closing 12) is installed, and the inlet duct 10 which becomes the inflow chamber 15 is coupled, and the blower chamber 120 in which the blower 31 is installed inside the lower part is coupled. In the blower for the vehicle air conditioner is formed and coupled to the scroll case 100 is provided with a drainage path 110 so that the water flowing through the drain hole 22 is discharged into the blowing chamber 120 , The drainage path 110 may have an arbitrary tangent (A) with respect to the wall surface 120a constituting the ventilation chamber 120 along the air flow direction in the ventilation chamber 120 and the centerline B of the drainage passage 110. Blower device for an automotive air conditioning apparatus, characterized in that formed to be an acute angle (α).