EP3144533A1 - 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
EP3144533A1
EP3144533A1 EP15792500.9A EP15792500A EP3144533A1 EP 3144533 A1 EP3144533 A1 EP 3144533A1 EP 15792500 A EP15792500 A EP 15792500A EP 3144533 A1 EP3144533 A1 EP 3144533A1
Authority
EP
European Patent Office
Prior art keywords
medium
barrel
main shaft
clutch
end socket
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.)
Granted
Application number
EP15792500.9A
Other languages
German (de)
French (fr)
Other versions
EP3144533B1 (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
    • 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
    • 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.
  • 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.
  • 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)

Abstract

A medium-frequency hermetically sealed refrigerant compressor capable of unloading during start, comprising: an electric connector (2), a front end socket (1), a rear end socket (6), a barrel (7), a medium-frequency motor (3) disposed in the barrel (7), a movable disc (4), a motion transmission sleeve (8), a main shaft (9), a clutch coil (10) and a clutch friction plate (11); the front and back ends of the barrel (7) are respectively connected to the front end socket (1) and the rear end socket (6); the barrel (7) has a stator disc (5) fixed therein cooperating with the movable disc (4); the movable disc (4) and the stator disc (5) are sleeved on one side of the main shaft (9), and 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); the output shaft of the medium-frequency motor (3) is connected to the clutch coil (10) via the motion transmission sleeve (8); the electric connector (2) is fixed on the barrel (7); and the electric connector (2) is connected to the clutch coil (10). The compressor achieves a low current start, and reduces the impact against the on-board power supply.

Description

    Technical Field
  • 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.
  • Nowadays, 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. However, 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.
    • Disclosure of the Invention
  • In view of the aforesaid disadvantages now existing in the prior art, 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.
  • In order to attain the above object, the medium-frequency hermetically sealed refrigerant compressor provided by the present invention comprises an electric connector, a front end socket, a rear end socket, 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.
  • 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.
    • Beneficial effects of the present invention
  • The medium-frequency hermetically sealed refrigerant compressor capable of unloading during start provided by the present invention 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. During operation, 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. With the same refrigeration capacity, 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.
    • Brief Description of Drawings
    • FIG. 1 is a structural view of the present invention.
  • In the figure, 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, and 11 refers to clutch friction plate.
    • Best Mode for Carrying out the Invention
  • The present invention will be described further in detail below with reference to the figure.
  • In FIG. 1, the medium-frequency hermetically sealed refrigerant compressor provided by the present invention comprises an electric connector 2, a front end socket 1, a rear end socket 6, a barrel 7, a medium-frequency motor 3 provided inside the barrel 7, a movable disc 4, a motion transmission sleeve 8, a main shaft 9, a clutch coil 10 and a clutch friction plate 11. 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.

Claims (3)

  1. A medium-frequency hermetically sealed refrigerant compressor capable of unloading during start comprises an electric connector (2), a front end socket (1), a rear end socket (6), a barrel (7), a medium-frequency motor (3) provided inside the barrel (7), a movable disc (4), a motion transmission sleeve (8), a main shaft (9), a clutch coil (10) and a clutch friction plate (11);
    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).
  2. The medium-frequency hermetically sealed refrigerant compressor capable of unloading during start according to claim 1, wherein the stator disc (5) is fixed in the barrel (7) by using screws.
  3. The medium-frequency hermetically sealed refrigerant compressor capable of unloading during start according to claim 1, wherein a seal ring is provided between the stator disc (5) and the side surface of the main shaft (9).
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 (en) 2014-05-12 2014-05-12 A kind of have the intermediate frequency hermetically sealed compressor starting offloading functions
PCT/CN2015/072404 WO2015172593A1 (en) 2014-05-12 2015-02-06 Medium-frequency hermetically sealed refrigerant compressor having activation and unloading functions

Publications (3)

Publication Number Publication Date
EP3144533A1 true EP3144533A1 (en) 2017-03-22
EP3144533A4 EP3144533A4 (en) 2018-01-17
EP3144533B1 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 (en)
EP (1) EP3144533B1 (en)
CN (1) CN103982431B (en)
WO (1) WO2015172593A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103982431B (en) * 2014-05-12 2016-01-06 陕西长岭特种设备有限公司 A kind of have the intermediate frequency hermetically sealed compressor starting offloading functions

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CN203856722U (en) * 2014-05-12 2014-10-01 陕西长岭特种设备有限公司 Intermediate-frequency fully-seaed refrigeration compressor with starting and unloading functions

Also Published As

Publication number Publication date
EP3144533B1 (en) 2020-10-21
CN103982431A (en) 2014-08-13
EP3144533A4 (en) 2018-01-17
CN103982431B (en) 2016-01-06
US20170082106A1 (en) 2017-03-23
WO2015172593A1 (en) 2015-11-19

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