CN215213932U - Double-power compressor - Google Patents

Abstract

The utility model relates to a double-power compressor, which belongs to the technical field of compressors and comprises a compressor shell, a belt wheel mechanism, an end cover, a compression mechanism which is arranged in the compressor shell and compresses fluid by means of rotary motion, a rotary driving shaft connected with the compression mechanism and a motor mechanism which runs through the rotary driving shaft; the compression mechanism penetrates through the motor mechanism through a rotary driving shaft and is connected with the belt pulley mechanism; wherein the motor mechanism is connected with the rotary drive shaft through a bearing sleeve assembly comprising a one-way bearing and a bearing sleeve. The utility model discloses a double dynamical compressor is through with a set of vortex dish of belt pulley and motor sharing, on the basis that realizes two kinds of drive mode free switching, has reduced installation space, has further realized air conditioning system's lightweight technological effect.

Description

Double-power compressor

Technical Field

The utility model relates to a compressor technical field specifically says, relates to a double dynamical compressor.

Background

The vehicle air-conditioning compressor of the existing fuel vehicle is mechanically driven by a belt pulley and can work only in the running state of an engine; under the parking condition, the vehicle is shut down based on the requirements of saving oil or reducing engine noise and the like, so that the problem that an air conditioner cannot be used for cooling under the condition that the engine stops rotating is caused. In the prior art, a double-power compressor with a pair of scrolls shared by motor transmission and internal combustion engine transmission is added in a vehicle to solve the problems.

The prior art discloses a speed reduction clutch mechanism and a motor transmission device (application number 2020216552489) of an electrified double-drive automobile air conditioner compressor, which comprises a compressor shell, a belt pulley, an end cover, a planetary gear reducer, a ratchet clutch, a motor and a scroll type compression mechanism, wherein the planetary gear reducer, the ratchet clutch, the motor and the scroll type compression mechanism are arranged in the compressor shell; the control system is used for controlling the belt pulley, the motor and the scroll type compression mechanism; the motor, the planetary gear reducer, the ratchet clutch and the compressor main shaft are coaxially arranged; the output end of the belt pulley is connected with a main shaft of the compressor; the output end of the motor is connected with the main shaft of the compressor through a planetary gear reducer and a ratchet clutch. Although the motor and the belt pulley share the same compressor mechanism, the effects of light weight and installation space saving are achieved, but the defect that the failure probability is increased due to the adoption of a transmission structure with a complex structure such as a planetary gear reducer and a ratchet wheel still exists.

Therefore, a dual-power compressor with more reasonable design, low failure rate, high stability and lighter weight is needed.

Disclosure of Invention

An object of the utility model is to provide a double dynamical compressor, this double dynamical compressor have design more reasonable, the fault rate is low, stability is high, more lightweight characteristics.

In order to achieve the above object, the present invention provides a dual power compressor, which comprises a compressor housing, a pulley mechanism, an end cover, a compression mechanism disposed in the compressor housing for compressing fluid by means of rotation, a rotary driving shaft connected to the compression mechanism, and a motor mechanism penetrating through the rotary driving shaft;

the compression mechanism penetrates through the motor mechanism through a rotary driving shaft and is connected with the belt pulley mechanism; wherein the motor mechanism is connected with the rotary drive shaft through a bearing sleeve assembly comprising a one-way bearing and a bearing sleeve.

Further, the preferred structure is that the bearing sleeve assembly further comprises a needle bearing, and the one-way bearing, the needle bearing and the bearing sleeve are sleeved on the rotary driving shaft;

the bearing sleeve comprises a sleeve part and a step part with the diameter larger than that of the sleeve part; the sleeve portion has an outer surface and an inner surface; the output end of the motor mechanism is connected with the outer surface of the sleeve part; the rotary driving shaft is in rolling connection with the inner surface of the sleeve part through a needle bearing; an annular first step surface for abutting against the one-way bearing is formed at the boundary of the step part and the sleeve part; the inner ring of the one-way bearing is fixedly connected with the rotary driving shaft, and the outer ring of the one-way bearing is fixedly connected with the step part.

Further, it is preferable that the step portion extends outward to form an annular second step surface, and the second step surface is connected to a damper for increasing a rotational resistance of the bearing housing.

Further, the preferred structure is that the damper comprises an elastic component and a ball, the fixed end of the elastic component is connected with the compression mechanism, and the free end of the elastic component faces the second step surface; the ball is connected with the free end of the elastic component and the second step surface in a rolling mode.

Further, the preferable structure is that the compression mechanism comprises a movable scroll and a fixed scroll, the fixed scroll is fixedly connected with the end cover, the fixed scroll is meshed with the movable scroll, the movable scroll is connected with a rotary driving shaft, the rotary driving shaft penetrates through a supporting bearing to be connected with a bearing sleeve assembly, and the end cover, the fixed scroll and a bearing seat correspondingly arranged with the supporting bearing form a compression cavity;

wherein, in the slide between bearing frame and the movable scroll, be provided with anti-rotation mechanism.

Further, the preferred structure is that the motor mechanism comprises a stator and a rotor with built-in magnetic steel, the stator is in interference fit with the compressor shell, and the rotor is fixedly connected with the outer surface of the sleeve part of the bearing sleeve.

Further, a seal ring is preferably provided between the compressor housing and the end cover.

Further, the preferred structure is that the belt wheel mechanism is sleeved on a rotary driving shaft coated with a compressor shell, the compressor shell is in rolling connection with the rotary driving shaft, and the belt wheel mechanism comprises a belt pulley and an electromagnetic clutch used for controlling the rotation of the belt pulley.

Further, the preferred structure is that the electromagnetic clutch is a friction type electromagnetic clutch, and comprises a sucker, an electromagnetic coil and an elastic element, wherein the electromagnetic coil is used for controlling the sucker to be attracted to or separated from the belt pulley; wherein the content of the first and second substances,

the belt pulley is connected with the compressor shell in a rolling mode through a belt pulley bearing, the electromagnetic coil is arranged between the belt pulley and the compressor shell, the sucker is arranged in the direction parallel to a wheel shaft of the belt pulley, and the rotary driving shaft is connected with the sucker through an elastic element.

As mentioned above, the dual-power compressor of the present invention replaces the planetary gear reducer and the ratchet wheel by adopting the combination of the bearing sleeve and the one-way bearing, so as to realize the stable connection between the motor transmission and the scroll plate; the beneficial effects are as follows:

1) the driving mode of the air-conditioning compressor of the fuel vehicle is freely switched from the driving of an engine of the fuel vehicle to the driving of a motor and the driving of the engine, so that the problem that the air-conditioning compressor of the fuel vehicle stops working due to the flameout of the engine is solved; the belt pulley and the motor share one group of scroll plates, and a one-way bearing, a bearing sleeve, the motor and a scroll compression mechanism are coaxially arranged in the compressor shell; on the basis of realizing two driving modes, the installation space is further reduced, and the light weight of the air conditioning system is further realized;

2) by adopting the bearing sleeve and the one-way bearing, the independent operation of two driving modes is realized. The one-way bearing is used as the overrunning clutch, so that the motor rotor is prevented from rotating when the belt pulley is used for driving, the additional energy loss is further avoided, and the maximization of the power utilization of the belt pulley is realized.

3) The mode of combining the bearing sleeve and the one-way bearing is adopted to replace a planetary gear reducer and a ratchet mechanism, so that the integral structure of the compressor is simplified, the operation stability is improved, the reliability of a compressor system is enhanced, and the volume of the compressor is further reduced.

To the accomplishment of the foregoing and related ends, one or more aspects of the invention comprise the features hereinafter fully described and particularly pointed out in the claims. The following description and the annexed drawings set forth in detail certain illustrative aspects of the invention. These aspects are indicative, however, of but a few of the various ways in which the principles of the invention may be employed. Moreover, the present invention is intended to include all such aspects and their equivalents.

Drawings

Other objects and results of the present invention will become more apparent and more readily appreciated as the same becomes better understood by reference to the following description and appended claims, taken in conjunction with the accompanying drawings. In the drawings:

fig. 1 is a schematic structural diagram of a dual-power compressor according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a compressing mechanism according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a bearing sleeve assembly according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a one-way bearing according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a belt pulley mechanism according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a control method for a dual-power compressor according to an embodiment of the present invention.

Wherein, 1, compressor shell; 2. a belt pulley mechanism; 3. a scroll compression mechanism; 4. an end cap; 5. a motor mechanism; 6. a bearing housing assembly; 7. a damper;

21. a belt pulley; 22. an electromagnetic clutch; 221. a suction cup; 222. an electromagnetic coil; 223. an elastic element; 224. a nut; 225. a belt bearing; 31. a movable scroll; 32. a fixed scroll; 33. a rotary drive shaft; 331. a tip bearing; 332. shaft sealing; 34. a support bearing; 35. a bearing seat; 36. an anti-rotation mechanism; 37. an air suction port; 38. an exhaust port; 39. a primary counterbalance; 51. a stator; 52. a rotor; 53. magnetic steel; 61. a one-way bearing; 611. an inner ring; 612. an outer ring; 62. a bearing housing; 621. a sleeve portion; 622. a step portion; 623. a first step surface; 624. a second step surface; 63. a needle bearing; 71. A spring; 72. and a ball.

Detailed Description

In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that such embodiment(s) may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate describing one or more embodiments.

It should be noted that in the description of the present invention, it is to be understood that the terms "center", "lateral", "upper", "lower", "front", "end", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations and positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention.

The existing double-power compressor comprises a compressor shell, a belt pulley, an end cover, a planetary gear reducer, a ratchet clutch, a motor and a scroll compression mechanism, wherein the planetary gear reducer, the ratchet clutch, the motor and the scroll compression mechanism are arranged in the compressor shell; the belt pulley is connected to an output shaft of the engine through a transmission belt, an output end of the belt pulley is connected with a main shaft of the compressor, an output end of the motor is connected with the main shaft of the compressor through a planetary gear reducer, and the stability of the transmission mechanism is to be improved. The utility model discloses a double dynamical compressor realizes motor drive and same vice vortex dish of wheel belt conveying common use through the mode that sets up one-way bearing as one-way clutch. When the wheel belt drives the eccentric rotating driving shaft to do work on the scroll plate, the overrunning clutch characteristic of the one-way bearing is utilized to enable the motor rotor to be static; when the wheel belt stops, the rotor of the motor rotates to enable the one-way bearing to lock the rotary driving shaft in a non-return mode, so that the rotary driving shaft is driven to do work on the scroll plate, and the technical effect of further improving the operation stability of the double-power compression device is achieved.

Various embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Fig. 1 is a schematic illustration of the structure of a dual power compressor, and fig. 1 is a schematic illustration of the structure of a dual power compressor according to an embodiment of the present invention. As shown in fig. 1, the dual-power compressor includes a compressor housing 1, a pulley mechanism 2, an end cover 4, a compression mechanism 3 disposed in the compressor housing 1 and compressing a fluid by a rotational motion, a rotary drive shaft 33 connected to the compression mechanism, and a motor mechanism 5 penetrating the rotary drive shaft 33. The compression mechanism is connected with the belt pulley mechanism 2 through a rotary driving shaft 33 passing through the motor mechanism 5; wherein the motor mechanism 5 is connected with the rotary drive shaft 33 through a bearing housing assembly 6 comprising a one-way bearing 61 and a bearing housing 62. Specifically, the compression mechanism is a scroll compressor, and the dual-power compressor is provided in a fluid compression refrigeration circuit in an air conditioning system and compresses a refrigerant. The tip of the rotation drive shaft 33 as an eccentric main shaft is inserted into the orbiting scroll of the scroll compressor and connected to the output end of the orbiting scroll. It should be noted that, in a specific implementation process, the compressor may be a scroll compression mechanism, or may also be a centrifugal compression mechanism or an axial flow compression mechanism; in addition, in the present embodiment, the compression mechanism, the rotary driving shaft 33 connected to the compression mechanism, and the motor mechanism 5 penetrating the rotary driving shaft 33 are sequentially disposed in the compressor housing 1, and specific positions are not limited in a specific implementation.

Fig. 2 is an exemplary illustration of a compression mechanism of a dual power compressor, and fig. 2 is a structure of the compression mechanism of the dual power compressor according to an embodiment of the present invention. As shown in fig. 2, the compression mechanism includes an orbiting scroll 31 and a fixed scroll 32, the fixed scroll 32 is fixedly connected to the end cap 4, the fixed scroll 32 is engaged with the orbiting scroll 31, the orbiting scroll 31 is connected to a rotary drive shaft 33, the rotary drive shaft 33 is connected to the bearing housing assembly 6 through a support bearing 34, and the end cap 4, the fixed scroll 32 and a bearing seat 35 disposed corresponding to the support bearing 34 form a compression chamber. The upper portion of the compressor housing 1 is provided with a suction port 37 and a discharge port 38. In order to further ensure the operation of the compressor, valve plates and a main balance weight 39 are also provided in the scroll, wherein the main balance weight 39 can compensate for the rotational imbalance of the eccentric rotary drive shaft 33. Specifically, the end cover is fixedly connected with the fixed scroll, the movable scroll is meshed with the fixed scroll, and the bearing seat, the end cover and the fixed scroll form a semi-closed space. The rotary driving shaft is respectively connected with the movable scroll plate through a joint head and a bearing after being supported and connected through a supporting bearing and a bearing seat.

In a specific embodiment, in order to further improve the stability of the compression mechanism, in the slide between the bearing housing 35 and the orbiting scroll, an anti-rotation mechanism 36 is provided. Specifically, the rotation preventing mechanism 36 is a cross slip ring, and may be a pin disc type or a pin column type, and is not particularly limited herein.

The anti-rotation mechanism 36 is provided to allow the orbiting scroll 31 to revolve without rotating. The movable scroll moves in a translational motion along with the autorotation prevention mechanism 36, and the volume of each compression chamber is changed continuously, so that the actions of sucking and compressing gas are realized.

Fig. 3 is an exemplary illustration of a bearing bush assembly of a dual-power compressor, and fig. 3 is a structure of the bearing bush assembly according to an embodiment of the present invention. As shown in fig. 3, the motor mechanism 5 includes a stator 51 and a rotor 52 with built-in magnetic steel 53, the stator 51 is in interference fit with the compressor housing 1, and the rotor 52 is fixedly connected to the outer surface of the sleeve portion 621 of the bearing housing 62. The stator and the rotor are combined to constitute a motor drive mechanism, and the rotor 52 rotates integrally with the rotary drive shaft 33. Through the magnetic resistance of the magnetic steel arranged in the rotor and the conduction of any two phases or three phases in the three-phase lines of the stator of the motor, the stator generates reinforced magnetic resistance on the rotor, and the phenomenon that the one-way bearing exceeds and is not separated during the high-speed running process of the belt is further eliminated.

Specifically, the bearing bush assembly 6 further includes a needle bearing 63, and the one-way bearing 61, the needle bearing 63, and the bearing bush 62 are sequentially fitted over the rotary drive shaft 33. Wherein, the bearing sleeve 62 comprises a sleeve portion 621 and a step portion 622 having a diameter larger than that of the sleeve portion 621; the sleeve portion 621 has an outer surface and an inner surface; the output end of the motor mechanism 5 is connected with the outer surface of the sleeve portion 621; the rotary drive shaft 33 is in rolling contact with the inner surface of the sleeve portion 621 via the needle bearing 63; the boundary between the stepped portion 622 and the sleeve portion 621 forms an annular first stepped surface 623 for abutting against the one-way bearing 61.

In a specific embodiment, the stepped portion 622 extends outward to form an annular second stepped surface 624, and the second stepped surface 624 is connected to the damper 7 for increasing the rotational resistance of the bearing housing 62. Specifically, a sleeve portion and a step portion are coaxially provided; the sleeve portion has a smaller diameter, the stepped portion has a larger diameter, and the second stepped surface has an outer diameter larger than an inner diameter thereof, that is, the bearing sleeve 62 has a stepped sleeve structure with a gradually increasing diameter from an end close to the motor mechanism to an end far from the motor mechanism. In the specific implementation process, the bearing sleeves are respectively installed in the one-way bearing and the needle bearing, the rotor is sleeved outside the front end, and the damper 7 is connected to the rear end. In the embodiment, the needle roller bearing and the support bearing are used as the sliding bearing, but the present invention is not limited to this, and for example, a rolling bearing, a deep groove ball bearing, a bush, or the like may be used. In addition, the first step surface and the second step surface are both annular. It should be noted that, in the present embodiment, the bearing bush assembly is configured as the above structure, and in a specific implementation process, the bearing bush assembly may also be configured as a bearing bush assembly without a damper type structure according to a specific application scenario; or two ends of the bearing are respectively provided with a small-size one-way bearing to replace the prior needle bearing; in addition, the one-way bearing can also be replaced by a one-way needle bearing; the specific implementation is not limiting.

Through the design structure of the bearing sleeve, the fixed connection between the one-way bearing and the rotary driving shaft, the rolling connection between the needle bearing and the bearing sleeve and the fixed connection between the rotor and the outer wall of the bearing sleeve can be realized, and further, on the basis of realizing the positioning function of the axial relative position of the rotor and the stator, the technical effect of keeping the air gap between the rotor and the stator relatively uniform in the motor operation process can be achieved; the rolling friction connection function of the damper and the tail end of the bearing sleeve has the technical effects of reasonable design, stable structure and reduction of occupied installation space.

In a specific embodiment, the damper 7 includes an elastic member (in this embodiment, the elastic member is a spring 71) and a ball 72, a fixed end of the spring 71 is connected to the compression mechanism, and a free end of the spring 71 faces the second step surface 624; the ball 72 is in rolling contact with the free end of the spring 71 and the second step surface 624. The spring 71 is provided with a ball 72 on one surface facing the second step surface. In specific implementation, the ball can include ball base and ball, and the ball base can be arc, is equipped with spherical hole on the ball base, and the ball is embedded into in the spherical through-hole. The size of the through hole is matched with the size of the ball; the ball can also be directly arranged at the free end of the spring; rolling friction is generated by the contact of the balls and the second step surface 624 of the bearing sleeve, the resistance generated by the rolling friction is small, and the generated noise is small; and the bottom of the ball is provided with a spring to increase the contact tightness degree of the ball and the second step surface. In order to further improve the compactness of the structure, the damper is embedded on the opposite surface of the second step of the bearing seat and the bearing sleeve. In a word, through setting up attenuator 7, increase the frictional force that the bearing housing bore, further eliminate the wheel belt high-speed operation in-process, lead to the overrunning of one-way bearing not to separate the phenomenon. It should be noted that the elastic component may be a spring, a spring plate, etc.

It should be noted that the present embodiment adopts a spring and ball cooperating manner as the damper. In a specific implementation process, any two phases or three phases of three phase lines of the motor stator can be controlled to be conducted, so that the stator can generate enhanced magnetic resistance to the rotor to realize damping.

The damper mechanism is not limited to the above two implementation manners, and other velocity-type dampers are also applicable to the present embodiment. For example, viscous damping is realized by increasing the contact area between the end surface of the bearing seat and the second step surface 624 by using the viscosity of the refrigeration oil and adjusting the proper distance between the end surface of the bearing seat and the second step surface 624.

Fig. 4 is an exemplary illustration of a one-way bearing of a dual power compressor, and fig. 4 is a structure of the one-way bearing according to an embodiment of the present invention. As shown in fig. 4, the one-way bearing includes an inner race 611 and an outer race 612; the inner ring 611 of the one-way bearing 61 is fixedly connected to the rotary drive shaft 33, and the outer ring 612 of the one-way bearing is fixedly connected to the step 622. It should be noted that the connection mode of the one-way bearing and the rotary driving shaft can be key connection, interference connection, etc.; the overrunning clutch characteristic of the one-way bearing under the condition that the inner ring rotates but the outer ring does not rotate and the non-return locking characteristic of the one-way bearing under the condition that the outer ring rotates are fully utilized.

Specifically, when the wheel belt drives the eccentric rotating driving shaft to do work on the scroll plate, the overrunning clutch characteristic of the one-way bearing is utilized to enable the motor rotor to be static; when the wheel belt stops, the rotor of the motor rotates to enable the one-way bearing to lock the rotary driving shaft in a non-return mode, so that the rotary driving shaft is driven to do work on the scroll plate, and the technical effect of further improving the running stability of double-power compression is achieved.

Fig. 5 is an exemplary illustration of a belt wheel mechanism of the dual-power compressor, and fig. 5 is a structure of the belt wheel mechanism according to an embodiment of the present invention. As shown in fig. 5, the belt pulley mechanism 2 is sleeved on a rotary driving shaft 33 which is wrapped with the compressor housing 1, the compressor housing 1 is connected with the rotary driving shaft 33 in a rolling manner, and the belt pulley mechanism 2 includes a belt pulley 21 and an electromagnetic clutch 22 for controlling the rotation of the belt pulley 21. The rotation of the belt is controlled on and off by the electromagnetic clutch 22.

Specifically, the stator of the motor mechanism is fixed inside the compressor housing, and the compressor housing is covered on the outside of the rotary drive shaft at one end of the stator structure near the pulley mechanism. The compressor housing is connected with the belt pulley mechanism 2 through a belt pulley bearing 225 sleeved on the compressor housing. In the compressor housing 1, the rotary drive shaft passage 33 passes through the shaft seal 332 and the end bearing 331 to be connected to the compressor housing outside thereof in a rolling manner. A sealing ring is arranged between the compressor shell 1 and the end cover 4, and the compressor shell and the end cover are combined to form an external shell structure of the compressor.

In a specific embodiment, the electromagnetic clutch 22 is a friction type electromagnetic clutch, and includes a suction cup 221, an electromagnetic coil 222 for controlling the suction cup 221 to be engaged with or disengaged from the pulley 21, and an elastic member 223; wherein the pulley 21 is connected with the compressor housing 1 by a pulley bearing 225 in a rolling manner, the electromagnetic coil 222 is provided between the pulley 21 and the housing 1, the suction cup 221 is provided in the direction parallel to the wheel axis of the pulley 21, and the rotary drive shaft 33 is connected with the suction cup 221 by an elastic member 223. Specifically, the electromagnetic clutch 22 is provided at the end of the rotary drive shaft near the belt mechanism; one end of the elastic member is connected to the rotation driving shaft through a nut 224, and the other end of the elastic member is connected to a suction cup. The combination and separation of the driving force of the wheel are controlled by controlling the electrification of the electromagnetic coil.

The utility model discloses still contain a double dynamical compressor control method.

Fig. 6 illustrates the principle of a dual-power compressor control method, and fig. 6 is a schematic diagram illustrating the principle of the dual-power compressor control method according to an embodiment, as shown in fig. 6, the dual-power compressor control method switches the power of the compressor through the dual-power compressor, and the method includes:

s610, when the motor mechanism stops working and the engine runs, the electromagnetic clutch is conducted, the electromagnetic coil generates electromagnetic force for attracting the sucker with the belt pulley, and the belt pulley drives the rotary driving shaft to rotate through the electromagnetic clutch so as to drive the compression mechanism to rotate to compress fluid; wherein, the rotary driving shaft drives the inner ring of the one-way bearing to rotate; the inner wall of the stator is attracted through magnetic steel arranged in the rotor, and a second step surface of the bearing sleeve is rubbed through a damper arranged on the bearing seat; so as to realize that the bearing sleeve and the outer ring of the one-way bearing are in a static state.

In a specific implementation process, any two phases or three phases of three phase lines of the motor stator can be controlled to be conducted, so that the stator can generate enhanced magnetic resistance to the rotor. And further the outer rings of the bearing sleeve and the one-way bearing are in a static state.

S620, when the motor mechanism works, the electromagnetic clutch is disconnected, and the sucker and the belt pulley are in a separated state; the rotor drives the bearing sleeve clamped with the rotor to rotate, the inner ring and the outer ring of the one-way bearing are locked, the bearing sleeve drives the one-way bearing and the rotary driving shaft to rotate, and then the compression mechanism is driven to rotate to compress fluid.

When the wheel belt drives the eccentric rotary driving shaft to do work on the scroll plate, the overrunning clutch characteristic of the one-way bearing is exerted under the condition that the inner ring rotates and the outer ring does not rotate, so that the motor rotor is static; when the wheel belt stops, the rotor of the motor rotates to enable the one-way bearing to lock the rotary driving shaft in a non-return mode, so that the rotary driving shaft is driven to do work on the scroll plate, and the technical effect of further improving the operation stability of the double-power compression device is achieved.

The utility model discloses a double dynamical compressor through adopting one-way bearing, has realized the independent function of two kinds of drive methods, has further solved the back-to-back series electromotive force that a vortex dish of belt pulley and motor sharing produced to the damage of back-to-back series electromotive force to motor and control system has been avoided. On the basis of improving the operation stability of the compressor, the installation space is further reduced, the cost is reduced, and the technical effect of realizing the light weight of the compressor is achieved.

While the foregoing disclosure shows illustrative embodiments of the invention, it should be noted that various changes and modifications could be made herein without departing from the scope of the invention as defined by the appended claims. In accordance with the structures of the embodiments of the invention described herein, the constituent elements of the claims can be replaced with any functionally equivalent elements. Therefore, the scope of the present invention should be determined by the content of the appended claims.

Claims (9)

1. A double-power compressor is characterized by comprising a compressor shell, a belt wheel mechanism, an end cover, a compression mechanism which is arranged in the compressor shell and compresses fluid by means of rotary motion, a rotary driving shaft connected to the compression mechanism and a motor mechanism which penetrates through the rotary driving shaft;

the compression mechanism penetrates through the motor mechanism through the rotary driving shaft and is connected with the belt pulley mechanism; wherein the motor mechanism is connected with the rotary drive shaft through a bearing bush assembly comprising a one-way bearing and a bearing bush.

2. The dual power compressor as recited in claim 1,

the bearing sleeve assembly further comprises a needle bearing, and the one-way bearing, the needle bearing and the bearing sleeve are sequentially sleeved on the rotary driving shaft;

wherein the bearing sleeve includes a sleeve portion and a stepped portion having a diameter larger than that of the sleeve portion; the sleeve portion having an outer surface and an inner surface; the output end of the motor mechanism is connected with the outer surface of the sleeve part; the rotary drive shaft is in rolling connection with the inner surface of the sleeve portion through the needle bearing; an annular first step surface for abutting against the one-way bearing is formed at the boundary of the step part and the sleeve part; the inner ring of the one-way bearing is fixedly connected with the rotary driving shaft, and the outer ring of the one-way bearing is fixedly connected with the step part.

3. The dual power compressor as recited in claim 2,

the step part extends outwards to form an annular second step surface, and the second step surface is connected with a damper used for increasing the rotation resistance of the bearing sleeve.

4. The dual power compressor as recited in claim 3,

the damper comprises an elastic component and a ball, the fixed end of the elastic component is connected with the compression mechanism, and the free end of the elastic component faces the second step surface; the ball is in rolling connection with the free end of the elastic component and the second step surface.

5. The dual-power compressor as recited in claim 1, wherein the compression mechanism comprises a movable scroll and a fixed scroll, the fixed scroll is fixedly connected to the end cap, the fixed scroll is engaged with the movable scroll, the movable scroll is connected to the rotary drive shaft, the rotary drive shaft is connected to the bearing housing assembly through a support bearing, and the end cap, the fixed scroll and a bearing seat disposed corresponding to the support bearing form a compression chamber;

and an anti-rotation mechanism is arranged in a slide way between the bearing seat and the movable scroll plate.

6. The dual power compressor as recited in claim 1,

the motor mechanism comprises a stator and a rotor with built-in magnetic steel, the stator is in interference fit with the compressor shell, and the rotor is fixedly connected with the outer surface of the sleeve part of the bearing sleeve.

7. The dual power compressor as recited in claim 1,

and a sealing ring is arranged between the compressor shell and the end cover.

8. The dual power compressor as recited in claim 1,

the belt pulley mechanism is sleeved on a rotary driving shaft coated with a compressor shell, the compressor shell is in rolling connection with the rotary driving shaft, and the belt pulley mechanism comprises a belt pulley and an electromagnetic clutch used for controlling the rotation of the belt pulley.

9. The dual power compressor as recited in claim 8,

the electromagnetic clutch is a friction type electromagnetic clutch and comprises a sucker, an electromagnetic coil and an elastic element, wherein the electromagnetic coil is used for controlling the sucker to be attracted to or separated from the belt pulley; wherein the content of the first and second substances,

the belt pulley is connected with the compressor shell in a rolling mode through a belt pulley bearing, the electromagnetic coil is arranged between the belt pulley and the compressor shell, the suckers are arranged in the direction parallel to a wheel shaft of the belt pulley, and the rotary driving shaft is connected with the suckers through the elastic elements.

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