JP2002106462A - Hybrid compressor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hybrid compressor which attains downsizing and weight reduction, and further can generate with a motor when driving a compressor by an engine. SOLUTION: The hybrid compressor 1 has the engine for traveling and the electric motor as a driving source, and an electromagnetic clutch 40 for judging and switching whether or not the driving force of the engine is transmitted to the driving shaft of a coolant compression part and the motor 50 are integrated with a main body. A magnetic coil 45 for operating the electromagnetic clutch 40 and that for the motor 50 are integrated. When driving the compression part by the engine, a rotor 42 which composes a part of the motor 50 and has a magnet 43 fixed thereto is rotated by the driving force of the engine together with the driving shaft 8 of the compression part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hybrid compressor which is used in a refrigeration cycle of a vehicle air conditioner mounted on a hybrid vehicle, an idle stop vehicle or the like, and has at least two driving sources of an engine and a motor.

[0002]

2. Description of the Related Art In a hybrid compressor disclosed in Japanese Utility Model Laid-Open Publication No. 6-87678, a motor shaft of a motor unit is connected to a drive shaft of a compression unit, and a pulley to which engine power is transmitted and the drive shaft or the motor shaft. An electromagnetic clutch for selectively transmitting the rotation of the pulley to the rotating shaft is provided between the rotating shaft and the rotating shaft of the compression unit by the motor unit by turning on the electromagnetic clutch to rotate the rotor of the motor unit by the power from the engine. Is driven.

[0003]

However, in the above-mentioned conventional hybrid compressor, a coil portion for driving the motor and a coil portion for operating the electromagnetic clutch are separately provided, so that the size and the size are reduced. There is a problem that the weight or the like becomes large, and the mountability on a vehicle and the fuel efficiency are likely to deteriorate.

Accordingly, an object of the present invention is to provide a hybrid compressor capable of reducing the size and weight and further generating electric power by a motor when the compressor is driven by an engine.

[0005]

In order to solve the above-mentioned problems, the present invention uses a driving engine and an electric motor as driving sources, and transmits the driving force of the engine to a driving shaft of a refrigerant compression unit. In a hybrid compressor in which an electromagnetic clutch for switching whether or not to perform and the motor are integrated with the main body, an electromagnetic coil for operating the electromagnetic clutch and an electromagnetic coil for driving the motor are integrated, and When the compression unit is driven by the engine, the driving force of the engine rotates the rotor that forms a part of the motor and has the magnet fixed thereto, together with the drive shaft of the compression unit. Item 1).

As described above, by integrating the coil for operating the electromagnetic clutch and the coil for driving the motor, the size of the compressor can be reduced, so that the mountability on a vehicle is improved. As a result, the fuel consumption can be improved. Further, when the compression section of the compressor is driven by the engine, by rotating the rotor of the motor at the same time, it is possible to generate electricity by the magnet arranged on the rotor and the coil arranged around the magnet, The motor unit can function as a generator. Thereby, the load on the battery can be reduced.

In addition, a rotating member that rotates by receiving the driving force of the engine and the rotor are connected via a one-way clutch that transmits only rotation in one direction, and the rotating force of the rotating member is applied to the rotor. It is preferable that the torque is transmitted and the torque of the rotor is not transmitted to the rotating member.

According to this, when the engine is driven, the rotor of the motor can be rotated at the same time, but when the motor is driven, only the rotor of the motor can be rotated without rotating the rotating member.

At least two contact members which are attracted and detached from each other when the electromagnetic clutch is switched on / off face each other in a circumferential direction, and at least one of the attracting surfaces of these contact members has an uneven portion. Is preferably formed (claim 3).

According to this, the contact area is increased due to the unevenness formed on the suction surface, and the suction force of the contact member is improved, so that the area of the suction surface can be reduced. The size of the compressor itself can be reduced. Note that the contact member refers to a member (stator) that does not move in the operation of suction / release, a member (armature) that moves to the stator side by energizing the coil, and the like.

[0011]

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

A hybrid compressor 1 shown in FIG. 1 is a rotary vane type compressor,
Compression chamber 5 between front block 2 and rear block 3
Is provided with the cylinder block 4 defined by the above. The cylinder block 4 includes a plurality of vanes 6.
Is provided, and the vane 6 rotates along the inner peripheral surface of the cylinder block 4 with the rotation of the rotor portion 7 to change the volume of the compression chamber 5. Is what it is.

A drive shaft 8 for rotating the rotor unit 7 includes:
The front block 2 penetrates the front block 2, one end of which extends outside. The cylinder is disposed in the front block 2 and closes the front side of the cylinder block 4 and the cylinder is disposed in the rear block 3. Rear side block 1 that closes the rear side of block 4
0 is rotatably held via a bearing 12.

The rear side block 10 has a suction port 13 of a compression chamber 5 formed in the cylinder block 4.
The displacement variable mechanism 14 is provided for moving the position of the nozzle to change the displacement. And the rear block 3
A suction space 15 is formed inside the front block 2 and a discharge space 16 is formed inside the front block 2. still,
In the figure, reference numeral 17 denotes the discharge space 16 around the drive shaft 8.
And a seal mechanism for sealing between the air and the outside air.

As a result, the rotation of the drive shaft 8 causes the rotation of the rotor section 7, and the refrigerant is sucked from the suction space 15 through the suction port 13 set by the variable capacity mechanism 14 and compressed, and is discharged from the discharge port (not shown). Discharged into the discharge space 16,
It is sent to the next step.

A driving unit 20 for rotating the driving shaft 8 comprises:
It has an electromagnetic clutch 40 and a motor 50. In the first embodiment shown in FIG. 1, the electromagnetic clutch 40 is connected to a pulley 21 connected to a traveling engine (not shown) via a belt, and is fixed to the pulley 21 and is connected to the front via a bearing 23. A stator 32 fixed to the block 2, a fixed plate 47 fixed to the drive shaft 8 via bolts 41, a leaf spring 48 fixed to the fixed plate 47, and a leaf spring 48 fixed to the leaf spring 48; And an electromagnetic coil 45 that attracts the armature 46 toward the stator 32 by being energized.

According to the electromagnetic clutch 40 having the above-described structure, by energizing the electromagnetic coil 45, the armature 46
Is attracted to and attracted to the stator 32 against the elastic force of the leaf spring 48, and the stator 32 rotates together with the pulley 21.
Of the armature 46, the leaf spring 48 and the fixed plate 4
7 to the drive shaft 8, and the drive shaft 8 can be rotated.

The motor 50 is energized by a rotor 42 extending toward the front block 2 of the drive shaft 8 in the axial direction, and a plurality of magnets 43 fixed to the extension of the rotor 42 and having different polarities alternately. Accordingly, an electromagnetic coil 45 for generating a rotating magnetic field with respect to the rotor 42 is provided. This magnetic coil 45 is integrated with an electromagnetic coil 45 for operating the above-described electromagnetic clutch 40.

The rotor 42 is connected to the stator 3
2 and a one-way clutch 55.
This one-way clutch 55 has, for example, as shown in FIG. 2, a plurality of claw portions 57 formed on the outer peripheral surface of the stator 32 of the electromagnetic clutch, and a locking portion 58 fixed to the rotor 57. The locking portion 58 is slidable about the point O in the direction of the arrow C and is not slid in the direction opposite to the arrow C.

As a result, when the stator 32 rotates in the direction of arrow A, the claw portion 57 is caught by the locking portion 58,
The rotor 42 also rotates in the direction of arrow B. On the other hand, when the rotor 42 rotates in the direction of arrow B, the locking portion 58 slides along the inclination of the claw portion 57 and does not get caught, so that the stator 32 does not rotate and the rotor 4 rotates.
Only 2 rotates. Thus, when the stator 32 is rotated by the engine, the rotor 42
Can also be rotated, and when the motor is driven by electric supply from the battery, only the rotor 42 can be rotated.

According to the above configuration, the electromagnetic coil 45 for operating the electromagnetic clutch 40 and the electromagnetic coil 45 for driving the motor 50 are integrated, so that the overall size of the compressor 1 is reduced. be able to. As a result, the mountability on the vehicle can be improved, and the weight can be reduced, so that the fuel efficiency can be improved. Further, when the drive shaft 8 is rotated by the engine, the rotor 4 of the motor 50 is simultaneously driven.
2 rotates, the magnet 43 disposed on the rotor 42 and the electromagnetic 45 coil disposed around the magnet 43 generate electric power, and the motor 50 can function as a power generator. Thus, the burden on the battery can be reduced, and the electric power generated by the motor unit 50 can be used for the operation of the electromagnetic clutch 40.

Hereinafter, another embodiment of the present invention will be described with reference to the accompanying drawings. The same reference numerals are given to the same portions as those of the above-described first embodiment and portions having similar functions. The description is omitted.

In the hybrid compressor 1 according to the second embodiment of the present invention, the drive unit 20 has a configuration as shown in FIG. The electromagnetic clutch 40 according to the second embodiment includes a rotating member 61 formed integrally with or connected to the pulley 21 and formed to rotate in the same direction as the rotation of the drive shaft 8 (see FIG. 1). A leaf spring 63 having one end fixed to the rotating member 61; an armature 62 fixed to the other end of the leaf spring 63; and a rotating body connected to the bolt 41 fixed to the drive shaft 8 (see FIG. 1). 42 and an electromagnetic coil 45 that is energized to attract the armature 62 to the suction surface 60 of the rotating body 42. The plurality of electromagnetic coils 45 are arranged around the bolt 41 and
Is formed so as to cover the coil 45 in the circumferential direction of the drive shaft 8, and the extending portion forms the suction surface 60 of the electromagnetic clutch 40.

According to the electromagnetic clutch 40, when the electromagnetic coil 45 is energized, the armature 62 is attracted to and attracted to the attracting surface 60 of the rotating body 42 against the elastic force of the leaf spring 63, thereby driving the engine. The rotational force of the stator 32, which rotates by receiving the force, is transmitted to the drive shaft 8 (see FIG. 1) via the rotating body 42 and the bolt 41, and the drive shaft 8 can be rotated.

The motor 50 according to the second embodiment
The electromagnetic coil 4 generates a rotating magnetic field with respect to the rotating body 42 when energized by the rotating body 42, a plurality of magnets 43 fixed to the rotating body 42 and having different polarities.
5 is constituted. The electromagnetic coil 45 includes a motor for operating the electromagnetic clutch 40 and a motor 50.
Is integrated with the one for driving. According to the motor 50, when the electromagnetic coil 45 is energized, a rotating magnetic field is generated for the rotating body 42, and the driving shaft 8 can be rotated via the rotating body 42 and the bolt 41.

According to the above configuration, when the engine is driven, the electromagnetic clutch 40 is operated to attract the armature 62 to the attraction surface 60 of the rotating body 42, thereby driving the compressor of the compressor by the driving force of the engine. At the same time, the magnet 43 fixed to the rotating body 42 also rotates, so that the motor 50 can function as a power generator. Further, according to this configuration, there is an advantage that the one-way clutch as in the above-described first embodiment does not need to be used.

In addition, the contact surface between the suction surface 60 and the armature 62 in the second embodiment has a structure shown in FIG.
As shown in FIG. 5, a convex portion 65 and a concave portion 66 are formed, respectively. These convex portions 65 and concave portions 66 are formed on the suction surface 6.
When the armature 62 and the armature 62 are attracted to each other, they are formed into a shape that fits each other. Thereby, the contact area when the suction surface 60 and the armature 62 are suctioned increases, and the suction force is improved, so that the suction area can be reduced,
The size and weight can be reduced.

Further, the convex portion 67 and the concave portion 68 in the third embodiment shown in FIG. 4 (b) are formed in a substantially triangular shape. The same effect as in the embodiment can be obtained.

Next, FIGS. 5 and 6 show an example of drive control of the hybrid compressor 1 described above. FIG.
In the example shown in (1), the battery 70 mounted on the vehicle and the hybrid compressor 1 (the electromagnetic coil 45) are electrically connected, and electric adjustment is performed when the motor unit 50 of the hybrid compressor 1 is driven as a normal motor. A motor driving amplifier 72 is connected via relays A and B, which are turned on / off by a control signal output from a control unit (C / U) 71 composed of a microcomputer or the like, and the motor unit 50 Alternator driving amplifier 73 for making electrical adjustments when the device acts as an alternator (generator)
Is turned on / off by a control signal from the C / U 71.
Are connected via relays C and D which are switched.

Each relay A, B,
The control of C and D can be performed by, for example, periodically executing a control routine as shown in the flowchart of FIG. 6 from the main control routine in a hybrid vehicle, an idle stop vehicle, or the like. First, it is determined whether or not the engine has stopped (step 100). If it is determined that the engine has not stopped, then it is determined whether or not the voltage of the battery 70 is less than 12 V (step 100). 103) If it is determined that the voltage of the battery 70 is not less than 12 V, the alternator driving amplifier 73 is turned on by turning on the relays C and D and turning off the relays A and B, and the hybrid Control is performed so that the motor unit 50 built in the compressor 1 functions as an alternator. Thereafter, the process returns to the main control routine. Step 103
When it is determined that the voltage of the battery 70 is less than 12 V, the process returns to the main control routine.

If it is determined in step 100 that the engine is stopped, the electromagnetic clutch 40 built in the hybrid compressor 1
Is turned off (step 101), and then relays A and B
Is turned on, and the relays C and D are turned off, so that the motor driving amplifier 72 is turned on, and control is performed so that the motor unit 50 functions as a normal motor. Thereafter, the process returns to the main control routine.

According to the above control, the motor unit 50 in the hybrid compressor 1 functions as a normal motor when the engine is stopped, but the motor unit 50 can function as an alternator when the engine is driven.

When predetermined conditions are met when the engine is driven, the supply of electricity from the battery to the electromagnetic clutch 40 is cut off, and the electricity generated by the motor unit 50 is used for the operation of the electromagnetic clutch 40. It may be.

[0034]

As described above, according to the present invention, the size of the compressor can be reduced by integrating the coil for operating the electromagnetic clutch and the coil for driving the motor. Therefore, the mountability to a vehicle can be improved, and the weight can be reduced, so that the fuel efficiency can be improved.

Further, when the compression section of the compressor is driven by the engine, the rotor of the motor is rotated at the same time, so that power is generated by the magnet disposed on the rotor and the coil disposed around the magnet. And the motor section can function as a generator.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a hybrid compressor according to a first embodiment of the present invention.

FIG. 2 is a sectional view showing the structure of a one-way clutch used in the first embodiment.

FIG. 3 is a partially enlarged cross-sectional view illustrating a structure of a drive unit of a hybrid compressor according to a second embodiment of the present invention.

FIG. 4A is a partially enlarged cross-sectional view showing a structure of an attraction surface of an electromagnetic clutch according to a second embodiment;
FIG. 4B is a partially enlarged cross-sectional view illustrating the structure of the suction surface of the electromagnetic clutch according to the third embodiment.

FIG. 5 is a diagram showing a configuration example for controlling a hybrid compressor according to the present invention.

FIG. 6 is a flowchart illustrating a control example performed in the configuration example illustrated in FIG. 5;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hybrid compressor 2 Front block 3 Rear block 4 Cylinder block 8 Drive shaft 20 Drive part 21 Pulley 32 Stator 40 Electromagnetic clutch 41 Bolt 42 Rotor (rotating body) 43 Magnet 45 Electromagnetic coil 46 Armature 47 Fixing plate 48 Leaf spring 50 Motor part 55 One-way clutch 57 Claw portion 58 Locking portion 60 Suction surface 61 Rotating member 62 Armature 63 Leaf spring 65, 67 Convex portion 66, 68 Concave portion 70 Battery 71 Control unit 72 Motor drive amplifier 73 Alternator drive amplifier A, B, C , D relay

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Masahiko Shukai 39-Higashihara, Chiyo-ji, Konan-cho, Osato-gun, Saitama F-term in the control of Xexel Valeo Climate Co., Ltd. 3H076 AA16 BB38 CC07 CC12 CC17 CC99

Claims (3)

[Claims] An electromagnetic clutch for switching whether or not to transmit a driving force of the engine to a drive shaft of a refrigerant compression unit, using the driving engine and an electric motor as drive sources, and the motor are integrated with the main body. In the hybridized compressor, an electromagnetic coil for operating the electromagnetic clutch and an electromagnetic coil for driving the motor are integrated, and when the compression unit is driven by the engine, the driving force of the engine is used. , Together with the drive shaft of the compression section,
A hybrid compressor comprising a part of the motor and rotating a rotor to which a magnet is fixed. 2. A rotating member that rotates by receiving a driving force of the engine and the rotor are connected via a one-way clutch that transmits only rotation in one direction, and the rotating force of the rotating member is applied to the rotor. 2. The hybrid compressor according to claim 1, wherein the torque is transmitted and the torque of the rotor is not transmitted to the rotating member. 3. At least two contact members which are attracted and detached from each other when the electromagnetic clutch is turned on / off, face each other in a circumferential direction, and at least one of the attracting surfaces of these contact members has an uneven portion. The hybrid compressor according to claim 1, wherein: