| Linear compressor -> Monitor Keywords |
|
|
 
Linear compressorRelated Patent Categories: Pumps, Motor Driven, Electric Or Magnetic Motor, Reciprocating Rigid Pumping Member, Reciprocating Motor, Unitary Pump And Motor Working MemberLinear compressor description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20070009370, Linear compressor. Brief Patent Description - Full Patent Description - Patent Application Claims
BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a linear compressor and, more particularly, to a linear compressor in which a shock-absorbing member is interposed between a cylinder and an inner core to allow the inner core to be press fitted around the cylinder under shock absorbing operation thereof. [0003] 2. Description of the Related Art [0004] Generally, a linear compressor is an apparatus to introduce, compress, and discharge operating fluid while linearly reciprocating a piston inside a cylinder using a linear driving force from a linear motor. [0005] FIG. 1 is a longitudinal sectional view of a conventional linear compressor. [0006] As shown in FIG. 1, the conventional linear compressor includes a hermetic container 2 to and from which operating fluid is introduced and discharged, and a compression unit mounted in the hermetic container 2 and adapted to compress the operating fluid. [0007] The compression unit includes a cylinder 10 configured to receive the operating fluid from a fluid suction pipe 4 provided at the hermetic container 2, a piston 12 mounted to be linearly reciprocated in the cylinder 10 to thereby compress the operating fluid in the cylinder 10, and a linear motor 20 to reciprocate the piston 12. [0008] To the cylinder 10 is coupled a discharge unit 16 including a discharge valve 16'. The discharge valve 16' serves to discharge the operating fluid, compressed in the cylinder 10, into a fluid discharge pipe 6 provided at the hermetic container 2. [0009] The piston 12 is internally formed with an operating fluid passage 12' to guide the operating fluid from the fluid suction pipe 4 into the cylinder 10. A suction valve 18 is coupled to one end of the piston 12 located in the cylinder 10 to open or close the operating fluid passage 12'. [0010] The linear motor 20 is generally divided into a stator, and a mover to electromagnetically interact with the stator to thereby be linearly reciprocated. [0011] The stator includes an inner core 21 press fitted around the cylinder 10, a ring-shaped outer core 22 located around the inner core 21, and a coil 23 provided in the outer core 22 to produce a magnetic field. [0012] As shown in FIG. 2, the inner core 21 is conventionally press fitted around the cylinder 10 using a hydraulic press during assembly of the linear motor 20. [0013] The mover includes a magnet 25 located between the inner core 21 and the outer core 22, and a magnet frame 26 to connect the magnet 25 to the piston 12. [0014] The compression unit is provided between a cylinder block 30 and a back cover 32 mounted in opposite sides of the hermetic container 2. Both the cylinder block 30 and the back cover 32 are supported by means of dampers 34. [0015] Now, the operation of the conventional linear compressor configured as stated above will be explained in detail. [0016] If electric power is applied to the linear motor 20, the piston 12 is reciprocated in the cylinder 10 using a reciprocation driving force from the linear motor 20. According to the reciprocating movement of the piston 12, the discharge valve 16' and the suction valve 18 are repeatedly opened or closed. [0017] Thereby, the operating fluid is introduced into the cylinder 10 through the fluid suction pipe 4 and the operating fluid passage 12' defined in the piston 12 in succession, thereby being compressed in the cylinder 10 by the piston 12 have a high pressure. Finally, the compressed high-pressure operating fluid is discharged from the cylinder 10 by way of the discharge unit 16, and consequently, is discharged out of the hermetic container 2 through the fluid discharge pipe 6. [0018] The introduction, compression, and discharge of the operating fluid as stated above are continuously repeated in that order so long as the linear motor 20 is driven. [0019] However, the conventional linear compressor as stated above has a problem in that the cylinder 10 may be deformed when the inner core 21 is press fitted around the cylinder 10. This excessively increases frictional loss between the cylinder 10 and the piston 12, causing deterioration in the operational efficiency and durability as well as malfunction of the compressor. SUMMARY OF THE INVENTION [0020] Therefore, the present invention has been made in view of the above problems, and it is an object of the present invention to provide a linear compressor capable of preventing deformation of a cylinder when an inner core is press fitted around the cylinder during assembly. [0021] In accordance with a first aspect of the present invention, the above and other objects can be accomplished by the provision of a linear compressor comprising: a cylinder containing a piston to be reciprocably mounted therein; a linear motor having an inner core fitted around the cylinder, the linear motor being connected to the piston; and a shock-absorbing member interposed between the cylinder and the inner core. [0022] Preferably, the inner core may have an inner radius larger than an outer radius of the cylinder, but smaller than a radial distance between a center of the cylinder and the shock-absorbing member mounted around the cylinder, the radial distance being measured prior to fitting the inner core around the cylinder. Continue reading about Linear compressor... Full patent description for Linear compressor Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Linear compressor patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. Start now! - Receive info on patent apps like Linear compressor or other areas of interest. ### Previous Patent Application: System and method for use of a gas Next Patent Application: Scroll compressor with an eccentric pin having a higher contact point Industry Class: Pumps ### FreshPatents.com Support Thank you for viewing the Linear compressor patent info. IP-related news and info Results in 0.14439 seconds Other interesting Feshpatents.com categories: Medical: Surgery , Surgery(2) , Surgery(3) , Drug , Drug(2) , Prosthesis , Dentistry 174 |
 * Protect your Inventions * US Patent Office filing 
PATENT INFO |
|
