JP2001032799A - Air blower device and air conditioning system for vehicle having the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form a plurality of air flows separated from each other inside one impeller driven by one motor, by comprising one air intake side guide dividing an air suction port of the impeller and extending inside the impeller, and a discharge side air guide extending from an end part of the air intake side guide in a radial direction. SOLUTION: An intake side air guide 34 formed into a cylinder shape is inserted to an outside air intake port 38, and the outside air intake port 38 is divided between a first outside air intake port 38A and a second outside air intake port 38B. A discharge side air guide 35 is integrally formed at an end of the intake side air guide 34 so as to extend from the end while expanding in a radial direction of a first impeller 31. By this constitution, air passing through the first and second outside air intake ports 38A and 38B passes through an inside of the intake side air guide 34, is introduced to the discharge side air guide 35, and discharged from upper and lower parts of the first impeller 31 in the radial direction. The discharged air is directed to one direction by a casing 37 formed into a spiral shape, and two-layer blowing wind is obtained at a blasting guide 36 provided at a vicinity of a blasting port.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blower which is a so-called centrifugal blower and a vehicle air conditioner using the blower.

[0002]

2. Description of the Related Art A conventional air conditioner is disclosed in
Japanese Patent No. 6531 discloses a defroster blowout from an outside air inlet for the purpose of reducing heat loss due to outside air introduction in a mode in which outside air is introduced into a first air passage and inside air is introduced into a second air passage. A first ventilation path to the air passage and a second ventilation path to the foot air passage from the outside air inlet.
Air passage, and an inside air discharge passage for discharging the inside air to the outside of the vehicle compartment. In a mode in which the outside air is introduced into the first air passage and the inside air is introduced into the second air passage, from the inside air flowing through the inside air discharge passage. A total heat exchanger that absorbs heat and radiates heat to the outside air introduced from the outside air inlet is provided, and the temperature of the outside air is raised by utilizing the heat of the inside air to reduce the heat loss due to the introduction of the outside air.

As a blower used in the air conditioner according to the above-mentioned reference, for example, there is a centrifugal blower disclosed in Japanese Patent Application Laid-Open No. 9-217700. This blower
It has a centrifugal multi-blade fan having suction ports on both sides, and sucks air from both ends of the rotating shaft and blows air outward.

[0004] By using the blower having the above configuration, two independent impellers can be formed and handled by driving two impellers integrally formed coaxially by one motor. The outside air can be introduced by one impeller and the inside air can be circulated by the other impeller.

[0005]

However, in recent years, in addition to conventional temperature control and carbon dioxide concentration suppression, humidity control and
Factors such as power saving are becoming important, and in order to meet these demands, multiple air flows are
It became necessary to handle with one impeller.

Accordingly, it is an object of the present invention to provide a blower which forms a plurality of independent air flows in at least one impeller driven by one motor,
It is an object of the present invention to provide a vehicle air conditioner using the blower.

[0007]

SUMMARY OF THE INVENTION Accordingly, the present invention provides one driving means and at least one impeller which is rotated by the driving means and radially discharges air sucked from an air inlet opening in an axial direction. And a casing that guides air discharged by the impeller in one direction, and an air outlet formed in the casing, wherein the air intake port of the impeller is divided and extended into the impeller. At least one suction-side air guide that protrudes, and a discharge-side air guide that extends radially from an end of the suction-side air guide, and is divided by the suction-side air guide by one impeller. Air is sucked independently from each of the mouths, and each sucked air is downstream without being mixed with each other by the air guide on the blast side In the blast is the thing.

Thus, with one impeller,
Since independent air can be sucked from each air inlet divided by the suction-side air guide and discharged in the radial direction along the discharge-side air guide, a plurality of independent air flows can be formed. Achieve tasks.

The air suction port is divided into two parts by inserting one cylindrical suction-side air guide, and two cylindrical suction-side air guides having different diameters are inserted. May be divided into three parts, and a plurality of cylindrical suction-side air guides having different diameters may be divided by passing through each other.

Further, the present invention provides a main air passage and a sub air passage communicating with a vent outlet and a foot outlet, and a sub air passage communicating with a differential air outlet, and the main air passage and the sub air passage. A blower guide for shutting off air between the main air passage and the sub air passage, a temperature control means comprising at least a cooling means and a heating means, and a part of the outside air which sucks outside air and inside air, A blower that blows a mixture of outside air and inside air into the main air passage and discharges part of the inside air, and a part of the outside air blown into the main air passage and a part of the inside air discharged In a vehicle air conditioner comprising a humidity exchanging means for exchanging humidity between the air blower, the blower is rotated by the driving means, and has an air suction port in a rotation axis direction, Inlet At least one impeller that radially discharges the sucked air, a casing that guides the air discharged by the impeller in one direction, an air outlet formed in the casing, and the main air passage and the sub air passage. At least one suction-side air guide that divides an air suction port of the impeller and extends into the impeller so that inflowing air is independently suctioned, and radially extends from an end of the suction-side air guide. An extending discharge air guide, wherein at least one of the discharge air guides comprises:
The air guide is provided at a position facing the inside and outside of the impeller.

Thus, the air supplied to the main air passage and the air supplied to the sub air passage can be independently suctioned and released by one impeller, thereby achieving the above object.

Further, in the vehicle air conditioner, the air intake port is divided into two air intake sections by one intake side air guide, and the outside air blown into the main air passage is supplied to one air intake section. The outside air sucked into the sub air passage is desirably sucked into the other air suction portion, and is further formed integrally with the impeller and at a position facing the air suction port in the axial direction. It is preferable that the apparatus has an inside air impeller having an inside air suction port that opens, and the inside air sucked from the inside air suction port is blown to the main air passage.

[0013] Thus, the blower forms three independent air flows of the dry outside air, the outside air and the inside air whose humidity has been exchanged with the inside air, and the dried outside air is directly blown to the sub air passage, and has the humidity exchange with the inside air. Since the outside air and inside air blown to the main air passage, dry outside air is blown out from the differential air outlet, and air keeping the humidity of the air in the vehicle compartment is blown out from the vent air outlet or the foot air outlet. It can maintain the humidity in the vehicle interior.

The air suction port is divided into three air suction portions by two suction side air guides, and the inside air blown into the main air passage is sucked into one air suction portion, and the main air is sucked into the main air passage. The outside air blown into the passage is sucked into another air suction portion, and the outside air blown into the sub air passage is sucked into the other air suction portion. Thus, three independent airflows can be formed by one impeller, and the above object can be achieved.

Further, it is desirable that the inside air discharged to the humidity exchange means is branched from the main air passage.

Further, an inside air intake port of the inside air impeller is divided to extend into the inside air impeller, and an inside air discharge extending radially from an end of the inside air impeller. A side air guide is further provided, and the inside air discharge side air guide may be provided at a position facing the inside air discharge guide of a discharge inside air bypass passage formed along the casing inside and outside the impeller. Things. This makes each impeller 2
Since the independent air flows of the layers are formed, the air flows of four layers can be formed.

[0017]

Embodiments of the present invention will be described below with reference to the drawings.

In a vehicle air conditioner 1 according to the first embodiment shown in FIG. 1, a main air passage 3 and a sub air passage 4 are provided in an air conditioning duct 2 side by side through a blower guide 36. It has a cooling heat exchanger (evaporator) 5 and a heating heat exchanger 6 which are arranged so as to cross the passage 3 and the sub air passage 4. A mix door 7 is provided for adjusting the amount of air passing through the heat exchanger 6 and the amount of air bypassed. The sub air passage 4 communicates with the vehicle interior 8 via a differential air outlet 9, and the main air passage 3 communicates with the vehicle interior 8 via a vent air outlet 10 and a foot air outlet 11. is there. still,
The differential outlet 9, vent outlet 10, and foot outlet 11 are appropriately opened and closed by mode doors 12, 13, and 14, respectively.

As shown in FIG. 2, the blower 30 includes a first impeller 31 provided on the outside air introduction side, a second impeller 32 provided on the inside air circulation side, and the first impeller 31 and One motor 33 for driving the second impeller 32, a casing 37 for guiding the air radially discharged by the impellers 31 and 32 in one direction, and inlet portions of the main air passage 3 and the sub air passage 4; A matching air outlet. First and second impellers 31, 32
Are blade portions 31A and 32 each composed of a plurality of blades (not shown) arranged in the circumferential direction and standing in the axial direction.
A, and has an air inlet (open air inlet 3)
8 and an inside air inlet 23).

As shown in FIG. 3, the outside air suction port 38 has a first outside air introduction port 38A and a second outside air introduction port 38B when a substantially cylindrical suction side air guide 34 is inserted therethrough. And divided into In this embodiment, the first outside air introduction port 38A is the same as the outside air introduction duct 21.

At the end of the suction side air guide 34, a discharge side air guide 35 is formed integrally with the end of the first impeller 31 so as to expand in the radial direction.
The discharge side air guide 35 is connected to the first impeller 31.
Of the blade portion 31A is divided in the axial direction.

Thus, the air that has passed through the first outside air inlet 38A passes through the inside of the suction-side air guide 34 and is radially discharged from the lower part of the first impeller 31 to the second outside air. The air that has passed through the inlet 38B is guided by the discharge-side air guide 35 and discharged radially from the upper portion of the first impeller 31. The discharged air is directed in one direction by a casing 37 formed in a substantially spiral shape and is blown out from an outlet (not shown), but near the outlet and close to the outside of the first impeller 31. Since the blower guide 36 is provided, a two-layer blown air can be obtained as shown by A and B in FIG.

As described above, in the blower 30 described above, the first impeller 31 can form two independent airflows A and B (the directly sucked outside air 22A and the humidity-exchanged wet outside air 21B). Therefore, three independent air flows can be formed together with the air flow 24R of the second impeller 32.

In the blower 30, the first outside air inlet 38a communicates with the outside air introduction duct 21;
The second outside air inlet 38b communicates directly with the outside of the passenger compartment via the bypass duct 22. Further, an inside air discharge duct 25 is provided in parallel with the outside air introduction duct 21. In this embodiment, the inside air discharge duct 25 is provided with an inside air discharge passage 2 (not shown) formed integrally with the casing 37 through an opening formed near the air outlet of the blower 30.
4 and a part of the inside air sucked by the second impeller 32 is discharged.

Further, a humidity exchange rotor 26 and a motor 26 for rotating the humidity exchange rotor 26 are provided in the air introduction / exhaust section 20 comprising the outside air introduction duct 21 and the inside air exhaust duct 25.
A, heater 27 provided on the outside air introduction duct 21 side
Is provided. In this humidity exchange device, the sucked outside air 21A is heated by the heater 27, and when the heated outside air passes through the humidity exchange rotor 26, the moisture of the portion of the humidity exchange rotor 26 facing the outside air introduction duct 21 is removed. Absorb and dry,
The outside air 21B includes humidity. Then, with the rotation of the humidity exchange rotor 26, the dried portion of the humidity exchange rotor 26 moves to a location facing the inside air discharge duct 25 to adsorb the moisture of the inside air 21RP passing therethrough, and is discharged as outside air 21RB to the outside air. Is done. As a result, the moisture of the discharged inside air 21RP is added to the introduced outside air 21A, so that the introduction of the outside air 21B can prevent the interior 8 from being dried more than necessary. The above-described humidity exchange is executed particularly when the air conditioner is in the heating mode.

As described above, in the case of the heating mode, the outside air 21A sucked into the outside air introduction duct 21 is discharged from the inside air 2A.
Humidity is added to the outside air 21 by exchanging humidity with 4RP.
B is blown from the lower part of the first impeller 31 into the main air passage 3 along the blower guide 36. This outside air 2
1B is the inside air 2 sucked by the second impeller 32
4R mixed with the evaporator 5 or simply cooled slightly to form the air indicated by 24D. When the mix door 7 is fully opened and heated through the heat exchanger 6 for heating, the mixed door 7 is heated. Blow into the room.

On the other hand, the outside air 22A that has passed through the bypass duct 22 is sucked from the second outside air inlet 28b, and flows along the discharge side air guide 35 into the first impeller 3A.
1 and flows into the sub air passage 4 along the upper surface of the air guide 36. The outside air 22A simply passes through the evaporator 5 or is weakly cooled to become air 22AC, passes through the heating heat exchanger 6, is heated and becomes air 22ACH, and is blown out from the differential outlet 9. Thus, the air 22ACH having a low relative humidity is blown out from below the windshield (not shown) into the vehicle interior 8 along the windshield, so that the windshield can be defrosted.

In the cooling mode, the heater 27
Is stopped, and the exchange of humidity between the exhausted inside air and the sucked outside air is not performed. The outside air and the inside air are cooled and dehumidified by passing through the evaporator. The temperature of the mix door 7 is controlled by limiting the amount of air passing through the heater core 6 and the amount of air bypassing the same. It is made to blow out from.

As described above, in the vehicle air conditioner 1, since a predetermined amount of inside air and outside air can be exchanged during both the cooling operation and the heating operation, ventilation in the vehicle interior can be improved. The concentration of carbon dioxide in indoor air can be reduced.

In particular, in the heating mode, the dry outside air and the inside air and the wet outside air whose humidity has been exchanged can be blown independently without being mixed by the impeller 31 at any time.
It is possible to suppress a decrease in the humidity in the vehicle interior and to prevent the windshield from fogging.

Hereinafter, a vehicle air conditioner according to another embodiment of the present invention will be disclosed.
The same portions as those described above or portions having the same effects are denoted by the same reference numerals, and description thereof will be omitted.

In the vehicle air conditioner 1 according to the second embodiment shown in FIGS. 4 and 5, the inside air discharge passage 24 'is integrally formed outside the casing 37, and the inside air passage of the second impeller 32 is formed. The suction port 23 is connected to the first and second inside air suction ports 23.
An inside air intake side air guide 40 divided into A and 23B, and an inside air discharge side air guide 41 extending radially from the end of the inside air intake side air guide 40 are arranged. The casing 3 forming the suction-side open rear end of the inside air discharge passage 24 'is located at a position facing the inside air discharge side air guide 41 with the blade portion 32A of the second impeller 32 interposed therebetween.
The inside air sucked from the second inside air suction port 23B is sent to the inside air discharge passage 24 '.

In the above configuration, in the blower 30 of the vehicle air conditioner 1 according to the second embodiment, the first and second impellers 31 and 32 form two independent airflows respectively. Therefore, a total of four independent air flows can be formed.

The blower of the vehicle air conditioner 1 according to the third embodiment shown in FIG. 6 and FIG.
Thus, three independent air flows are formed. Therefore, the air suction port 38 of the impeller 50 is formed by the first suction-side air guide 34 and the second suction-side air guide 53 inserted through the first suction-side air guide 34 into three parts. The portion is divided into first, second, and third air inlets 38A, 38B, 38C.

The end of the first suction-side air guide 34 extends inside the impeller 50 and expands in the radial direction to form a first discharge-side air guide 35. The end of the second suction-side air guide 53 extends further into the impeller 50 than the end of the first suction-side air guide 34 and expands in the radial direction to form a second end.
The discharge side air guide 54 is formed. Thereby, the discharge side is also located above the first discharge side air guide 35, between the first discharge side air guide 35 and the second discharge side air guide 54, and the second discharge side air guide. Guide 54
Is divided into three parts.

With the above configuration, the air flow communicating the first air inlet 38A and the upper part of the first discharge air guide 35, the second air inlet 38B and the first and second air inlets 38B are connected to each other. Three independent air flows: an air flow communicating between the discharge air guides 35 and 54, and an air flow communicating the third air suction port 38C and below the second discharge air guide 54. Can be formed.

Further, when a blower for forming three independent air flows inside the impeller 50 is used for a vehicle air conditioner, the first air suction formed outside the first suction side air guide 34 is used. The outside air is directly introduced into the port 38A, and the second air suction port 3 formed between the first suction side air guide 34 and the second suction side air guide 53 is formed.
8B communicates with the intake outside air duct 21 to introduce the outside air that has passed through the humidity exchange rotor 26, and a third air intake port 38C formed inside the second intake side air guide 53 is provided with an inside air. It is desirable to communicate with the suction duct 52 to introduce inside air.

In the third embodiment, only the air guide 36 is formed at a position facing the first discharge air duct 35 with the blade portion 50A of the impeller 50 interposed therebetween. The outside air that has passed through the air suction port 38B and the inside air that has passed through the third air suction port 38C are mixed after being discharged from the blade portion 50A. On the other hand, when it is desired to separate and send out the independent air even after the air is discharged from the impeller 50, as shown in FIG. 8, the respective air guides 35 and 54 on the discharge side and the blade portion 50A are interposed therebetween. By providing the first and second air guides 36A and 36B at opposing positions, three independent air flows A, B and C can be obtained even after discharge from the impeller.

[0039]

As described above, according to the present invention, a plurality of independent air flows can be formed inside one impeller, so that a single impeller can blow a plurality of air flows under different conditions. Since it becomes possible, a plurality of driving means are not required, so that power saving and space saving can be achieved.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a vehicle air conditioner according to a first embodiment of the present invention.

FIG. 2 is a partially enlarged view showing the vicinity of an air blower of the vehicle air conditioner according to the first embodiment.

FIG. 3 is a schematic diagram showing a configuration of an impeller of the blower according to the first embodiment.

FIG. 4 is a schematic configuration diagram of a vehicle air conditioner according to a second embodiment of the present invention.

FIG. 5 is a partially enlarged view showing the vicinity of an air blower of the vehicle air conditioner according to the second embodiment.

FIG. 6 is a schematic configuration diagram of a vehicle air conditioner according to a third embodiment of the present invention.

FIG. 7 is a partially enlarged view showing the vicinity of a blower of the air conditioner for a vehicle according to the third embodiment.

FIG. 8 is a schematic diagram showing another configuration of the impeller according to the third embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vehicle air conditioner 2 Air conditioning duct 3 Main air passage 4 Sub air passage 5 Cooling heat exchanger (evaporator) 6 Heating heat exchanger 7 Mix door 8 Car interior 9 Differential outlet 10 Vent outlet 11 Foot outlet 21 Outside air introduction duct 22 Bypass duct 23 Inside air introduction port 24, 24 'Inside air discharge passage 25 Inside air discharge duct 30 Blower 31 First impeller 31A Blade section 32 Second impeller 32A Blade section 33 Motor 34 Intake side air guide 35 Release side Air guide 36 Ventilation guide 37 Casing 38 Air suction port 50 Impeller 53 Inside air suction side air guide 54 Inside air discharge side air guide

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3H034 AA02 AA18 BB02 BB06 BB10 BB19 BB20 CC03 DD01 DD12 EE12 3L011 BF01

Claims (10)

[Claims] 1. One driving means, at least one impeller rotated by the driving means and radially discharging air sucked from an air inlet opening in an axial direction, and air discharged by the impeller In a blower including at least a casing that guides in one direction and an air outlet formed in the casing, at least one suction-side air guide that divides an air suction port of the impeller and extends inside the impeller. A discharge-side air guide extending radially from an end of the suction-side air guide, wherein one impeller independently suctions air from each of the air suction ports divided by the suction-side air guide. And the blown air is blown to the downstream side without being mixed with each other by the blowing air guide. Place. 2. The air suction port is divided into two parts by inserting one cylindrical suction-side air guide, and two independent air flows are obtained. The blower as described. 3. The air inlet is divided into three parts by inserting two cylindrical air guides having different diameters from each other, so that three independent air flows are obtained. The blower according to claim 1. 4. The air intake port is divided into a plurality of cylinders by passing a plurality of cylindrical suction air guides having different diameters from each other, so that a plurality of independent air flows can be obtained. The blower according to 1. 5. A main air passage which is juxtaposed in an air conditioning duct and communicates with a vent outlet and a foot outlet, and a sub air passage which communicates with a differential air outlet, and between the main air passage and the sub air passage. A blower guide to be shut off, a temperature control means at least comprising a cooling means and a heating means in the main air passage and the sub air passage, and a part of the outside air while sucking outside air and inside air, and blowing part of the outside air to the sub air passage, A blower that blows a mixture of outside air and inside air into the main air passage and discharges part of the inside air, and exchanges humidity between outside air blown into the main air passage and part of the inside air discharged. The air conditioner for a vehicle, comprising: a humidity exchanging unit for performing the following: the blower is rotated by the driving unit, has an air suction port in a rotation axis direction, and is sucked from the air suction port. Diameter of the air At least one impeller that discharges air in one direction, a casing that guides the air discharged by the impeller in one direction, an air outlet formed in the casing, and air that flows into the main air passage and the sub air passage. At least one intake air guide extending into the impeller by dividing the air intake port of the impeller so as to be sucked, and a discharge side extending radially from an end of the intake air guide. Having an air guide,
At least one of the discharge-side air guides is provided at a position facing the air guide inside and outside the impeller. 6. The air suction port is divided into two air suction portions by one suction side air guide, and the outside air blown into the main air passage is sucked into one air suction portion, and the sub air The vehicle air conditioner according to claim 5, wherein the outside air blown into the passage is sucked into the other air suction portion. 7. An inside air impeller having an inside air intake port formed integrally with the impeller and opening at a position facing the air intake port in the axial direction, wherein the inside air sucked from the inside air intake port is: The vehicle air conditioner according to claim 5, wherein air is blown into the main air passage. 8. The air intake port is divided into three air intake sections by two intake side air guides, and the internal air blown into the main air passage is sucked into one air intake section, The outside air blown into the passage is sucked into another air suction unit, and the outside air blown into the sub air passage is sucked into the other air suction unit. Vehicle air conditioner. 9. The inside air discharged to the humidity exchange means,
9. The vehicle air conditioner according to claim 5, wherein the air conditioner is branched from the main air passage. 10. An inside air intake side air guide that divides an inside air intake port of the inside air impeller and extends into the inside air impeller, and an inside air discharge that extends radially from an end of the inside air impeller. A side air guide is further provided, and the inside air discharge side air guide is provided at a position facing the inside air discharge guide of a discharge inside air bypass passage formed along the casing inside and outside the impeller.
An air conditioner for a vehicle as described in the above.