JP2011196244A - Compressor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problems wherein, since a stator side surface and a body casing are directly fixed, vibration generated in a stator is transmitted to the body casing, thereby increasing noise.SOLUTION: This compressor includes a motor 5 stored in the body casing 3, and a compression mechanism section 4 driven the motor 5. The stator 5a of the motor 5 and the body casing 3 are fixed through rubber 32 as a fixing member including an elastic member, thereby damping the vibration generated by the stator 5a by the fixing member. Accordingly, it is possible to provide the low-noise compressor suppressing transmission of vibration between the body casing 3 and the stator 5a.

Description

  The present invention relates to a compressor applied to an air conditioning and refrigeration apparatus.

  Conventionally, various types of compressors of this type have been published and published by many manufacturers and the like, and various compressors are actually used as compressors for home room air conditioners and refrigerators. It's being used. Recently, it has begun to be used as a compressor for automobile air conditioners.

  Further, in order to attach the stator and main body casing of the motor in the container of these compressors, as disclosed in Patent Document 1, for example, the inner diameter of the main body casing is configured to be slightly smaller than the outer diameter of the stator, There is a so-called shrink-fitting method, etc., in which the main body casing is thermally expanded by bringing the casing to a high temperature state, and the main body casing is contracted by fixing the stator at normal temperature in the thermally expanded main body casing. Used (see, for example, Patent Document 1).

  FIG. 9 shows a conventional scroll compressor described in Patent Document 1. In FIG. As shown in FIG. 9, the main body casing 101 and the stator 102 are fixed by shrink fitting or the like.

JP-A-9-287585

  However, in the conventional configuration, since the stator side surface and the main body casing are directly fixed, vibrations generated in the stator are transmitted to the main body casing, and there is a problem that noise increases.

  The present invention solves the above-described conventional problems, and an object thereof is to provide a low-noise compressor that suppresses vibration transmission between a main casing and a stator.

  In order to solve the above-described conventional problems, a compressor according to the present invention includes a motor housed in a main body casing, and a compression mechanism that is driven by the motor, and includes a stator of the motor and the main body casing. It is fixed via a fixing member including an elastic member.

  As a result, the vibration generated by the stator is attenuated by the fixing member, and transmission of vibration between the main casing and the stator is suppressed, and a low noise compressor can be provided.

  The compressor of the present invention is fixed to the stator of the motor via an O-ring between the sleeve and the container. Accordingly, the O-ring is interposed, so that the stator can be easily centered with respect to the main body casing, the accuracy of the motor is improved, and the performance is improved. Furthermore, the vibration of the stator is transmitted to the container via the O-ring, so that a low vibration and low noise compressor can be provided.

  The compressor of this invention can suppress the transmission of the vibration between a main body casing and a stator, and can provide a low noise compressor.

Sectional drawing of the scroll compressor in Embodiment 1 of this invention The principal part front view of the motor part of the scroll compressor in Embodiment 1 The principal part cross-sectional view of the motor part of the scroll compressor in Embodiment 1 The principal part front view of the motor part of the scroll compressor in Embodiment 2 of this invention (A) The principal part cross-sectional view of the motor part of the scroll compressor in Embodiment 2, (b) The figure which shows the detail of the fixing | fixed part A of a stator (A) The principal part cross-sectional view of the motor part of the scroll compressor in Embodiment 3 of this invention, (b) The figure which shows the detail of the fixing | fixed part B of a stator (A) The principal part cross-sectional view of the motor part of the scroll compressor in Embodiment 4 of this invention, (b) The figure which shows the detail of the fixing | fixed part C of a stator (A) The principal part cross-sectional view of the motor part of the scroll compressor in Embodiment 5 of this invention, (b) The figure which shows the detail of the fixing | fixed part D of a stator Longitudinal sectional view of a conventional scroll compressor

  1st invention is a compressor provided with the motor accommodated in the main body casing, and the compression mechanism part driven by the said motor, Comprising: The stator of the said motor and the said main body casing are fixed including an elastic member. By fixing through the member, the third member attenuates the vibration generated by the stator, thereby suppressing the transmission of vibration between the main body casing and the stator, and providing a low noise compressor. it can.

  In the second invention, in particular, by using an O-ring as the elastic member of the compressor of the first invention, the O-ring attenuates the vibration generated by the stator, and the vibration is transmitted between the main casing and the stator. And a low noise compressor can be provided. Further, the O-ring intervenes facilitates the centering of the stator with respect to the main body casing, improves the accuracy of the motor, and improves the performance.

  In the third aspect of the invention, the fixing member of the compressor of the second aspect of the invention is constituted by the sleeve and the O-ring, so that the stator can be securely fixed without being deformed and the stator is generated. Since the vibration is attenuated by the sleeve and the O-ring, the transmission of vibration between the main casing and the stator is suppressed, and a low noise compressor can be provided.

  In the fourth aspect of the invention, in particular, the elastic member of the compressor according to the first aspect of the present invention is a resin band, so that the resin band attenuates the vibration generated by the stator, and the vibration is transmitted between the main casing and the stator. And a low noise compressor can be provided.

  According to the fifth aspect of the invention, in particular, the fixing member of the compressor according to the fourth aspect of the invention is constituted by the sleeve and the resin band, so that the vibration generated by the stator is damped by the sleeve and the resin band. Therefore, it is possible to provide a low noise compressor.

  In the sixth aspect of the present invention, the rear part of the compressor of the first to fifth aspects is a scroll, which can achieve more quietness.

  Furthermore, the seventh invention uses the compressor of the first to sixth inventions for a vehicle air conditioner, and can be used even when quietness is particularly required because vibration is easily transmitted. It is.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
In the present embodiment, a scroll compressor will be described as an example. 1 is a cross-sectional view of a scroll compressor according to Embodiment 1 of the present invention, FIG. 2 is a front view of a main part of a motor part of the scroll compressor, and FIG. 3 is a cross-sectional view of a main part of the motor part of the scroll compressor. FIG.

  FIG. 1 shows an example of a horizontal scroll compressor installed sideways by a mounting leg 2 around the body of the scroll compressor 1. The scroll compressor 1 includes a compression mechanism section 4 and a motor 5 for driving the compression mechanism section 4 in the main body casing 3, and a liquid storage section 6 for storing liquid for lubrication of each sliding section including the compression mechanism section 4. The motor 5 is driven by a motor drive circuit unit (not shown).

  The motor 5 includes a stator 5a fixed in the main body casing 3 and a rotor 5b that rotates together with the drive coaxial 14.

  The refrigerant to be handled is a gas refrigerant, and a liquid such as a lubricating oil 7 is employed as a liquid to be used for lubrication of each sliding part and a seal of the sliding part of the compression mechanism part 4. The lubricating oil 7 is compatible with the refrigerant. However, in this invention, if it is lubricating oil, it will not be restricted to these.

  In the present embodiment, a compressor having a scroll will be described. Basically, a compressor mechanism 4 that sucks, compresses, and discharges refrigerant, a motor 5 that drives the compressor mechanism 4, and a compressor. Any scroll compressor 1 may be used as long as it has a liquid storage part 6 for storing liquid used for lubrication of each sliding part including the mechanism part 4 in the main body casing 3 and the motor 5 is driven by a motor drive circuit part.

  A main bearing member 19 having a pump 13, a secondary rolling bearing 21, a motor 5, and a main rolling bearing 22 is disposed from one end wall side in the axial direction in the main body casing 3. The pump 13 is housed from the outer surface of the end wall and is held between the lid body 16 and the pump body 17 that is fitted thereafter, and a pump chamber 17 that leads to the liquid storage section 6 is formed inside the lid body 16 to form a suction passage 18. Through the liquid storage section 6. The auxiliary rolling bearing 21 is supported by an end wall, and the side connected to the pump 13 of the drive shaft 14 is supported. The motor 5 fixes the stator 5 a to the inner periphery of the main body casing 3, and the drive shaft 14 can be rotationally driven by a rotor 5 b fixed around the middle of the drive shaft 14.

  The main bearing member 19 is fixed to the inner periphery of the sub casing 28 with a bolt (not shown), and the compression mechanism portion 4 side of the drive shaft 14 is supported by the main rolling bearing 22. The fixed scroll 11 is attached to the outer surface of the main bearing member 19 with a bolt or the like (not shown), and the orbiting scroll 12 is sandwiched between the main bearing member 19 and the fixed scroll 11 to constitute a scroll compressor. An Oldham ring 26 is provided between the main bearing member 19 and the orbiting scroll 12 for preventing the orbiting scroll 12 from rotating and causing orbiting motion.

  An eccentric shaft 14a is integrally formed at the end of the drive shaft 14, and a bush 20 is fitted to and supported by the eccentric shaft 14a. The orbiting scroll 12 is supported on the bush 20 via an eccentric rolling bearing 23 so that the orbiting scroll 12 faces the fixed scroll 11. An eccentric rolling bearing 23 is accommodated on the back surface of the orbiting scroll 12.

  The orbiting scroll 12 is formed by erecting a spiral wrap on an end plate having a cylindrical boss portion that accommodates the eccentric rolling bearing 23. The fixed scroll 11 is combined with the orbiting scroll 12 and is formed with a spiral wrap upright on the end plate.

  The exposed portion of the compression mechanism section 4 from the sub casing 28 is covered with the main casing 3 which is fixed with bolts (not shown) while the sub casing 28 and the openings are brought into contact with each other. The compression mechanism unit 4 is located between the suction port 8 of the sub casing 28 and the discharge port 9 of the main casing 3, and its own suction port (not shown) is connected to the suction port 8 of the sub casing 28. Opens a discharge gas (not shown) to the discharge chamber 25 through the reed valve 24a. The discharge chamber 25 is on the side of the motor 5 having the discharge port 9 between the compression mechanism portion 4 and the end wall through the fixed scroll 11 and the main bearing member 19 or a communication passage 27 formed between them and the main body casing 3. Leads to.

  About the scroll compressor 1 comprised as mentioned above, the operation | movement and an effect | action are demonstrated.

  The motor 5 is driven by a motor drive circuit unit, and rotates the compression mechanism unit 4 via the drive shaft 14 and drives the pump 13. In the compression mechanism section 4 of the scroll compressor 1, the compression space 10 formed by meshing the fixed scroll 11 and the orbiting scroll 12 causes the orbiting scroll 12 to orbit the stationary scroll 11 via the drive shaft 14 by the motor 5. The suction port 8 provided in the sub-casing 28 and the discharge port provided in the main body casing 3 perform suction, compression, and discharge to the external cycle of the refrigerant returning from the external cycle by changing the volume with movement. 9 through.

  At the same time, the lubricating oil 7 stored in the liquid storage section 6 of the main body casing 3 drives the pump 13 or the like with the driving shaft 14 or uses the differential pressure in the main body casing 3, so that the driving shaft 14 Is supplied to the rear surface of the orbiting scroll 12 as the orbiting scroll 12 is driven to rotate through the drive shaft oil supply path 15.

  At this time, the compression mechanism section 4 is supplied with the lubricating oil 7 of the liquid storage section 6 by the pump 13 and receives the lubrication and sealing action, while passing through the suction port 8 of the sub casing 28 and the suction port provided in its fixed scroll 11. The return refrigerant from the refrigeration cycle is sucked and compressed, and discharged from its discharge port 24 to the discharge chamber 25. The refrigerant discharged into the discharge chamber 25 enters the motor 5 side through the communication passage 27, and in the process until the refrigerant is discharged from the discharge port 9 of the main body casing 3 while cooling the motor 5, the refrigerant is a gas-liquid such as a collision or a throttle. The secondary rolling bearing 21 is also lubricated by the accompanying partial lubricating oil 7 while receiving the separation of the lubricating oil 7 with the separation.

  FIG. 2 is a front view of the main part of the motor part of the scroll compressor, and FIG. 3 is a cross-sectional view of the main part of the motor part of the scroll compressor. As shown in FIGS. 2 and 3, in the present embodiment, the main body casing 3 made of aluminum and the stator 5a having an outer peripheral portion made of iron are made of HNBR (hydrogenated nitrile rubber) which is a fixing member provided therebetween. ) Rubber 32 is fixed.

  By comprising in this way, the rubber | gum 32 can suppress transmission of the vibration between the main body casing 3 and the stator 5a, and can provide a low noise scroll compressor.

(Embodiment 2)
FIG. 4 is a front view of the main part of the motor part of the scroll compressor, and FIG. 5A is a cross-sectional view of the main part of the motor part of the scroll compressor. FIG. 5B shows a detailed view of the fixed portion A of the stator 5a. As shown in FIGS. 4 and 5, in the present embodiment, an O-ring groove 5c is formed in the stator 5a. The main body casing 3 and the stator 5a are fixed via an O-ring 34 made of HNBR which is a fixing member provided therebetween.

  In the present embodiment, since the configuration of the main casing 3 and the stator 5a is the same as that of the first embodiment except that the O-ring groove 5c and the O-ring 34 are fixed, the description thereof is omitted.

  In the present embodiment, the stator 5a and the aluminum main body casing 3 are fixed via an HNBR O-ring 34 that is a fixing member, so that the O-ring 34 generates vibration generated by the stator 5a. As a result, the transmission of vibration between the main body casing 3 and the stator 5a is suppressed, and a low noise scroll compressor can be provided.

  Further, since the O-ring 34 is interposed, the centering of the stator 5a with respect to the main body casing 3 is facilitated, so that the accuracy of the motor 5 is improved and the performance is improved.

(Embodiment 3)
FIG. 6A is a cross-sectional view of the main part of the motor portion of the scroll compressor according to the present embodiment, and FIG. 6B is a detailed view of the fixed portion B of the stator 5a.

  As shown in FIG. 6, in the present embodiment, the main casing 3 of the scroll compressor and the stator 5a of the motor 5 are fixed to the iron sleeve 35 and the stator 5a by welding. An O-ring groove portion 35 a is formed on the outer peripheral surface of the iron sleeve 35, and is fixed to an aluminum main body casing 3 via an O-ring 36 made of EPDM (ethylene propylene rubber) as a third member. ing.

  The stator 5a to which the sleeve 32 is fixed by welding is press-fitted into the main body casing 3. Here, the stator 5a is formed to have a thickness of 35 mm by stacking, for example, 0.35 mm electromagnetic steel plates. If the thin plates are stacked in this manner, these thin plates may be deformed.

  Therefore, by using the sleeve 23 as in the present application, the thin plate constituting the stator 5a can be fixed by press-fitting without deformation.

  Further, since the stator 5a and the aluminum main body casing 3 are fixed via an O-ring 36 and a sleeve 35 which are fixing members, the O-ring 36 attenuates vibrations generated by the stator 5a. The transmission of vibration between the main body casing 3 and the stator 5a can be suppressed, and a low-noise scroll compressor can be provided.

(Embodiment 4)
FIG. 7A is a cross-sectional view of the main part of the motor part of the scroll compressor according to the present embodiment, and FIG. 7B is a detailed view of the fixing part C of the stator 5a.

  As shown in FIG. 7, in the present embodiment, a resin band groove portion 5d is formed in the stator 5a, and a PTFE (polytetrafluoroethylene) resin that is a fixing member between the main body casing 3 and the stator 5a. It is fixed via a band 37.

  Therefore, the vibration generated by the stator 5a is attenuated by the resin band 37, so that transmission of vibration between the main body casing 3 and the stator 5a can be suppressed, and a low-noise scroll compressor can be provided.

(Embodiment 5)
Fig.8 (a) has shown the principal part cross-sectional view of the motor part of the scroll compressor in this Embodiment. FIG. 8B shows a detailed view of the fixing portion D.

  In the present embodiment, the fixing member between the main body casing 3 and the stator 5 a is constituted by the sleeve 38 and the resin band 39.

  As shown in FIG. 8, in this embodiment, an iron sleeve 38 and a stator 5a are fixed by welding. Resin band groove portions 38 a are formed at two locations on the outer peripheral surface of the iron sleeve 38, and are fixed to the aluminum main body casing 3 through PTFE resin bands 39.

  In this way, the stator 5a and the aluminum main body casing 3 are fixed between the stator 38a and the resin band 39 through the sleeve 38, which is a fixing member, so that the vibration generated by the stator 5a can be reduced. Will be attenuated. Therefore, the transmission of vibration between the main body casing 3 and the stator 5a can be suppressed, and a low-noise scroll compressor can be provided.

  As described above, in the scroll compressor according to the present invention, the third member attenuates the vibration generated by the stator by fixing the stator between the stator and the main body casing via the third member. Since transmission of vibration between the main body casing and the stator can be suppressed, the working fluid is not limited to the refrigerant, and can be applied to applications of scroll fluid machines such as an air scroll compressor, a vacuum pump, and a scroll type expander. .

DESCRIPTION OF SYMBOLS 1 Scroll compressor 2 Mounting leg 3 Main body casing 4 Compression mechanism part 5 Motor 5a Stator 5b Rotor 5c Stator O-ring groove 5d Stator resin band groove 6 Liquid storage part 7 Lubricating oil 8 Suction port 9 Discharge port 10 Compression space 11 Fixation Scroll 12 Orbiting scroll 13 Pump 14 Drive shaft 14a Eccentric shaft 15 Drive shaft oil supply path 16 Lid 17 Pump chamber 18 Suction passage 19 Main bearing member 20 Bush 21 Sub rolling bearing 22 Main rolling bearing 23 Eccentric rolling bearing 24 Discharge of fixed scroll Outlet 24a Reed valve 25 Discharge chamber 26 Oldham ring 27 Connecting passage 28 Sub casing 32 Rubber 33 Adhesive 34 O ring 35 Sleeve 35a O ring groove 36 O ring 37 Resin band 38 Sleeve 38a Resin band groove 39 Resin band 101 Main body casing 102 Stator

Claims (7)

A compressor comprising a motor housed in a main casing and a compression mechanism driven by the motor, wherein the stator of the motor and the main casing are fixed via a fixing member including an elastic member. Compressor. The compressor according to claim 1, wherein the elastic member is an O-ring. The compressor according to claim 2, wherein the fixing member includes a sleeve and an O-ring. The compressor according to claim 1, wherein the elastic member is a resin band. The compressor according to claim 4, wherein the fixing member includes a sleeve and a resin band. The compressor according to any one of claims 1 to 5, wherein the compression mechanism section is of a scroll type. The compressor of any one of Claims 1-6 used for the air conditioner for vehicles.