EP3144533B1 - Medium-frequency hermetically sealed refrigerant compressor having activation and unloading functions - Google Patents

Medium-frequency hermetically sealed refrigerant compressor having activation and unloading functions Download PDF

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Publication number
EP3144533B1
EP3144533B1 EP15792500.9A EP15792500A EP3144533B1 EP 3144533 B1 EP3144533 B1 EP 3144533B1 EP 15792500 A EP15792500 A EP 15792500A EP 3144533 B1 EP3144533 B1 EP 3144533B1
Authority
EP
European Patent Office
Prior art keywords
barrel
medium
main shaft
hermetically sealed
refrigerant compressor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP15792500.9A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3144533A1 (en
EP3144533A4 (en
Inventor
Ping Zhang
Zhizhong Wang
Baozong CHEN
Qikun GAO
Gaoxuan BU
Peng Chen
Lei Wang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shaanxi Changling Special Equipment Co Ltd
Xian Jiaotong University
Original Assignee
Shaanxi Changling Special Equipment Co Ltd
Xian Jiaotong University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shaanxi Changling Special Equipment Co Ltd, Xian Jiaotong University filed Critical Shaanxi Changling Special Equipment Co Ltd
Publication of EP3144533A1 publication Critical patent/EP3144533A1/en
Publication of EP3144533A4 publication Critical patent/EP3144533A4/en
Application granted granted Critical
Publication of EP3144533B1 publication Critical patent/EP3144533B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/008—Hermetic pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
    • F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/02—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
    • F04C28/06—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids specially adapted for stopping, starting, idling or no-load operation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
    • F04C29/005—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/60—Shafts
    • F04C2240/605—Shaft sleeves or details thereof

Definitions

  • the present invention relates to the technical field of vapor cycle refrigerant system in a helicopter, and more specifically relates to a medium-frequency hermetically sealed refrigerant compressor capable of unloading during start.
  • a vapor cycle refrigerant system of a helicopter mainly comprises a compressor, a medium-frequency motor, an evaporator, a condenser, an evaporation fan, a condensing fan and an expansion valve.
  • Motion transmission of the medium-frequency motor is achieved by a belt so as to drive the compressor to realize refrigeration.
  • This method of driving the compressor has the following disadvantages: 1) motion transmission by using a belt occupies a large area of spaces and requires good positioning of the components and high precision with respect to installation; 2) the motor has an independent cooling mechanism which requires additional cooling fan and air ducts etc. to be provided, thereby resulting in undesirable bulkiness and heaviness; 3) tension of the belt and its limited service life requires additional maintenance and replacement.
  • a hermetically sealed refrigerant compressor may effectively solve the above problems.
  • a hermetically sealed refrigerant compressor according to prior art generally has a start current 5-7 times stronger than a working current. In an on-board device, such a strong start current will trigger power protection of the helicopter and thus causes power failure which is dangerous.
  • US 2 2018 521 A discloses a compression mechanism with a fluid tight enclosure divided into a motor compartment and a compressor compartment, a motor and a compressor being disposed in said compartments, respectively, wherein the compressor compartment provides a reservoir for lubricant, means for supplying lubricant to the compressor, communicating means between the outlet of the compressor and the motor compartment to conduct the compressed medium discharged by the compressor and lubricant to the motor compartment before the compressed medium and lubricant enters the compressor compartment.
  • US 1 826 172 discloses a power transmitting device with a housing of substantially tubular formation having a transversely extending web provided with a tubular portion constituting a bearing, a compressor shaft journaled in the bearing a split phase motor ⁇ within the housing and having a :rotor hub rotatable freely on said shaft and abutting ⁇ the bearing, and means substantially free from friction for transmitting motion positively from the rotor hub to the shaft at a one to one ratio after the rotor hub has accelerated from zero speed to a predetermined speed less than the normal running speed thereof.
  • the device comprises only a sun gear fixed directly to the shaft and rotatable planet gears carried by the rotor hub and meshing with the sun gear, the planet gears being individually unbalanced but arranged symmetrically with respect to the axis of the shaft so that the gearing as a whole is always in balance.
  • the present invention provides a medium-frequency hermetically sealed refrigerant compressor capable of unloading during start.
  • the medium-frequency hermetically sealed refrigerant compressor achieves a low current start.
  • a front end and a rear end of the barrel are connected with the front end socket and the rear end socket respectively; a stator disc cooperating with the movable disc is fixed in the barrel; the movable disc and the stator disc are sleeved on one side of the main shaft; the clutch friction plate and the clutch coil are sleeved on another side of the main shaft; the movable disc and the clutch friction plate are fixed on a side surface of the main shaft; an output shaft of the medium-frequency motor is connected with the clutch coil via the motion transmission sleeve; the electric connector is fixed on the barrel; the electric connector is connected with the clutch coil.
  • the stator disc is fixed in the barrel by using screws.
  • a seal ring is provided between the stator disc and the side surface of the main shaft.
  • the medium-frequency hermetically sealed refrigerant compressor capable of unloading during start comprises an electric connector, a barrel, a medium-frequency motor provided inside the barrel, a movable disc, a motion transmission sleeve, a main shaft, a clutch coil and a clutch friction plate.
  • the voltage value is lowered upon starting, and the medium-frequency motor drives the clutch coil to rotate via the motion transmission sleeve to achieve an unloaded start; when rotation of the medium-frequency motor becomes stable, the electric connector supplies power to the clutch coil so that the clutch coil and the clutch friction plate will be mutually attracted to each other; as such, the main shaft will be driven by the medium-frequency motor to rotate to achieve a low current start.
  • the present invention uses a hermetically sealed structure so as to significantly reduce the size and weight of the vapor cycle refrigeration system. At the same time, the present invention achieves a low current start of the medium-frequency hermetically sealed refrigerant compressor to reduce the impact against the on-board power supply.
  • FIG. 1 is a structural view of the present invention.
  • 1 refers to a front end socket
  • 2 refers to an electric connector
  • 3 refers to a medium-frequency motor
  • 4 refers to a movable disc
  • 5 refers to a stator disc
  • 6 refers to a rear end socket
  • 7 refers to a barrel
  • 8 refers to a motion transmission sleeve
  • 9 refers to a main shaft
  • 10 refers to clutch coil
  • 11 refers to clutch friction plate.
  • a front end and a rear end of the barrel 7 are connected with the front end socket 1 and the rear end socket 6 respectively.
  • a stator disc 5 cooperating with the movable disc 4 is fixed in the barrel 7.
  • the movable disc 4 and the stator disc 5 are sleeved on one side of the main shaft 9.
  • the clutch friction plate 11 and the clutch coil 10 are sleeved on another side of the main shaft 9.
  • the movable disc 4 and the clutch friction plate 11 are fixed on a side surface of the main shaft 9.
  • An output shaft of the medium-frequency motor 3 is connected with the clutch coil 10 via the motion transmission sleeve 8.
  • the electric connector 2 is fixed on the barrel 7.
  • the electric connector 2 is connected with the clutch coil 10.
  • the stator disc 5 is fixed in the barrel 7 by using screws.
  • a seal ring is provided between the stator disc 5 and the side surface of the main shaft 9.
  • the clutch friction plate 11 is made by iron material.
  • the present invention has the following working principle: At first, power is not supplied by the electric connector 2 to the clutch coil 10, and the clutch coil and the clutch friction plate 11 are separated; next, activate the medium-frequency motor 3 so that the medium-frequency motor 3 drives the clutch coil 10 to rotate via the motion transmission sleeve 8; when rotation of the medium-frequency motor 3 becomes stable, the electric connector 2 supplies electricity to the clutch coil 10, and then the clutch coil 10 is magnetized by the received electricity; the clutch coil 10 and the clutch friction plate 11 will then be mutually attracted to each other to drive the main shaft 9 to rotate via the medium-frequency motor 3; the movable disc 4 at another side of the main shaft will then also rotate to achieve compression refrigeration.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
EP15792500.9A 2014-05-12 2015-02-06 Medium-frequency hermetically sealed refrigerant compressor having activation and unloading functions Active EP3144533B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201410198899.2A CN103982431B (zh) 2014-05-12 2014-05-12 一种具有启动卸载功能的中频全封闭制冷压缩机
PCT/CN2015/072404 WO2015172593A1 (zh) 2014-05-12 2015-02-06 一种具有启动卸载功能的中频全封闭制冷压缩机

Publications (3)

Publication Number Publication Date
EP3144533A1 EP3144533A1 (en) 2017-03-22
EP3144533A4 EP3144533A4 (en) 2018-01-17
EP3144533B1 true EP3144533B1 (en) 2020-10-21

Family

ID=51274542

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15792500.9A Active EP3144533B1 (en) 2014-05-12 2015-02-06 Medium-frequency hermetically sealed refrigerant compressor having activation and unloading functions

Country Status (4)

Country Link
US (1) US20170082106A1 (zh)
EP (1) EP3144533B1 (zh)
CN (1) CN103982431B (zh)
WO (1) WO2015172593A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103982431B (zh) * 2014-05-12 2016-01-06 陕西长岭特种设备有限公司 一种具有启动卸载功能的中频全封闭制冷压缩机

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DE69223374T2 (de) * 1991-10-17 1998-03-26 Copeland Corp Maschine mit Gegendrehrichtungsschutz
US6234769B1 (en) * 1997-07-09 2001-05-22 Denso Corporation Hybrid type compressor driven by engine and electric motor
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CN103982431B (zh) * 2014-05-12 2016-01-06 陕西长岭特种设备有限公司 一种具有启动卸载功能的中频全封闭制冷压缩机
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Also Published As

Publication number Publication date
CN103982431B (zh) 2016-01-06
CN103982431A (zh) 2014-08-13
US20170082106A1 (en) 2017-03-23
EP3144533A1 (en) 2017-03-22
EP3144533A4 (en) 2018-01-17
WO2015172593A1 (zh) 2015-11-19

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