Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
  • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
  • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
  • F04B39/127—Mounting of a cylinder block in a casing
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
  • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
  • F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
  • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
  • F04B39/14—Provisions for readily assembling or disassembling
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
  • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
  • F25B31/00—Compressor arrangements
  • F25B31/02—Compressor arrangements of motor-compressor units
  • F25B31/023—Compressor arrangements of motor-compressor units with compressor of reciprocating-piston type

Definitions

• the present invention relates to a hermetic compressor the production cost of which is decreased.
• the refrigeration capacity of the hermetic compressor used in cooling devices varies depending on the motor power.
• the motor power depends on the height of the stator stack disposed therein.
• the stator stack is composed of magnetic laminations stacked one above the other. Stator stacks having different number of laminations hence different heights are used when compressors having different refrigeration capacities are desired to be produced.
• This situation not only requires the need for using crankshafts with different lengths but also the height of the compressor casing to be variable. Since the compressor height being variable affects the inlet port of the suction muffler, position of which is kept stationary on the casing aligning precisely with the inlet duct, creates an adverse effect on the efficiency of the compressor. Furthermore, enlarging the compressor volume is an undesired condition since this will result in decreasing the effective usage space of the cooling device wherein it is used.
• the aim of the present invention is to realize a hermetic compressor the production cost of which is decreased.
• the hermetic compressor realized in order to attain the aim of the present invention, explicated in the first claim and the respective claims thereof, comprises a stator stack produced by stacking laminations one above the other, a framework shaped block disposed on the stator stack, supporting the elements like cylinder, piston and crankshaft, more than one leg, extending from the block towards the stator stack, supporting the block over the stator stack and more than one cavity shaped housing disposed on the stator stack, wherein the legs are seated. At least some of the legs enter into the housing.
• the depth of the housing is as much as the difference between the total separate heights of both the block and the stator stack before the block is mounted on the stator stack and the total height of the block and the stator stack after the block is mounted on the stator stack.
• the space occupied in the casing by the stator stack and the block is decreased by placing some portion of the legs in the housing.
• the total volume of the compressor is decreased.
• the total height of the stator stack and the block is kept constant for different types of compressors by adjusting the depth of the housing. Accordingly, the parameters such as the length of the crankshaft, height of the casing, location of suction duct inlet that vary for different types of compressors remain the same for each compressor and standardization is provided in production.
• the housing is formed by overlapping the cut-outs when the laminations are stacked one above the other for forming the stator stack. Cut-outs, the total thickness of which is suitable for the dimensions of the leg are made on a number of lamination steel sheets that can form the depth of the housing. The overlapping cut-outs form the housing while the stator stack is produced. Thus, the production of the compressor comprising the housing on the stator stack is facilitated.
• the housing is arranged in a position near the external periphery of the stator stack.
• the losses that may occur in compressor efficiency due to the housing are tried to be decreased.
• the width of the housing is almost equal to the width of the leg.
• some portion of the leg entering into the housing is clasped by the housing. Accordingly, the block is supported on the stator stack in a firm and balanced manner.
• the housing arranged on the stator stack By means of the housing arranged on the stator stack, the total height of the stator stack disposed in the casing and the block placed on the stator stack is kept constant for each type of compressor. Consequently, cost advantage is provided in production by changing only the height of the housing during production, by sharing the identically produced elements like the crankshaft, upper casing for each type of compressor.
• Figure 1 – is the cross sectional view of a hermetic compressor.
• Figure 2 – is the perspective view of a lamination.
• the hermetic compressor (1) suitable for use in cooling devices like the refrigerator comprises a motor (7) that provides the operation thereof, a cylinder (8) providing the refrigerant fluid therein to be pumped, a piston (9) providing the refrigerant fluid to be compressed into the cylinder (8) hole and a crankshaft (10) that transfers the movement delivered from the motor (7) to the piston (9).
• the hermetic compressor (1) of the present invention comprises a casing (2), a stator stack (3) composed of laminations (L), disposed inside the casing (2), a block (4) disposed in the casing (2), placed on the upper surface of the stator stack (3), supporting and/or bearing the basic mechanical elements like the cylinder (8), piston (9), crankshaft (10), more than one leg (5), seated on the stator stack (3) by extending from the block (4) toward the upper surface of the stator stack (3) and supporting the block (4) on the stator stack (3) and more than one housing (6), disposed on the stator stack (3) wherein the legs (5) are seated.
• the stator stack (3) produced by stacking the laminations (L) one above the other is disposed inside the casing (2) and the block (4) is seated on the stator stack (3).
• the legs (5) extending from the block (4) towards the stator stack (3) are seated in the housings (6).
• the legs (5) becomes embedded in the stator stack (3). Consequently, the total height of the stator stack (3) and the legs (5) is decreased. Accordingly, the casing (2) volume and the compressor (1) dimensions are decreased.
• a monotype crankshaft (10) is used for different types of compressors (1) since the length of the crankshaft (10) transferring the movement received from the motor (7) to the piston (9) is determined by the total lengths of the stator stack (3) and the block (4) leg (5). Even if the height of the stator stack (3) and/or the leg (5) change/s, the total height of the stator stack (3) and the leg (5) is kept constant by adjusting the depth of the housing (6). Thus, cost advantage is provided in production.
• the hermetic compressor (1) furthermore comprises a lower casing (14) and an upper casing (15) forming the casing (2), a suction muffler (11) disposed inside the casing (2), providing the noise resulting from the refrigerant fluid to be attenuated, an inlet duct (13) carrying the refrigerant fluid delivered from the evaporator in the refrigeration cycle, an inlet port (12) arranged on the suction muffler (11), providing the passage of the refrigerant fluid delivered from the inlet duct (13) to the suction muffler (11).
• the casing (2) is produced from two parts, being the lower casing (14) and the upper casing (15).
• the upper casing (15) can be produced with fixed length for different types of hermetic compressors (1). Consequently, the inlet port (12) of the suction muffler (11) can be aligned precisely with the inlet duct (13). Thus, occurrence of losses in the refrigeration capacity and/or efficiency of the hermetic compressor (1) is prevented.
• the hermetic compressor (1) comprises more than one lamination (L) having more than one cut-out (16) arranged thereon and more than one housing (6) formed by overlapping the cut-outs (16) when the laminations (L) are joined together to form the stator stack (3).
• the depth of the housing (6) is predetermined by the producer and the cut-outs (16) are made on the number of laminations (L) for maintaining that depth.
• the housing (6) is formed when the laminations (L) having cut-outs (16) thereon are stacked one over the other by aligning these cut-outs (16) while producing the stator stack (3).
• the process of forming the housing (6) on the stator stack (3) is facilitated since cutting the lamination (L) steel sheet is a simple operation. Thus, both production is facilitated and also cost advantage is provided.
• the housing (6) is formed by cutting the laminations (L) after being joined together.
• the stator stack (3) is formed by stacking the laminations (L) one above the other and the required housing (6) depth is determined by calculating the total height of the stator stack (3) and the legs (5).
• the housing (6) is formed by making as many cut-out operations on the stator stack (3) as the determined housing (6) depth.
• the housing (6) is arranged in a position near the external periphery of the stator stack (3).
• the housings (6) are prevented from adversely affecting the magnetic field formed between the stator stack (3) and the rotor.
• the width of the housing (6) is almost equal to the width of the leg (5).
• the block (4) is provided to be firmly placed on the stator stack (3) by providing the portions of the legs (5) remaining inside the housing (6) to be clasped by being surrounded by the housing (6).

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Compressor (AREA)
• Physics & Mathematics (AREA)
• Thermal Sciences (AREA)

Applications Claiming Priority (2)

Publications (1)

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Family Applications (1)

Country Status (5)

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Family Cites Families (5)

• 2011
  • 2011-06-08 CN CN201180028321.7A patent/CN102939698B/zh not_active Expired - Fee Related
  • 2011-06-08 WO PCT/EP2011/059436 patent/WO2011154428A2/en not_active Ceased
  • 2011-06-08 BR BR112012031482A patent/BR112012031482A2/pt not_active IP Right Cessation
  • 2011-06-08 EP EP11724195.0A patent/EP2580845A2/de not_active Withdrawn
  • 2011-06-08 KR KR1020137000380A patent/KR20130085407A/ko not_active Ceased

Non-Patent Citations (1)

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