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1. 发明专利

JP2004120994A Phase-failure detector and phase-failure detecting method 审中-公开
公开(公告)号：JP2004120994A
公开(公告)日：2004-04-15
申请号：JP2003314876
申请日：2003-09-08
申请人： Carrier Corp , キャリアコーポレイションCarrier Corporation
发明人： LIFSON ALEXANDER , TARAS MICHAEL F
IPC分类号： F04B49/10 , H02H1/00 , H02H3/13 , H02H3/34 , H02H7/09 , H03L7/08
CPC分类号： H02H7/09 , H02H1/0038
摘要： PROBLEM TO BE SOLVED: To provide a phase-failure detector and its detecting method by which the detector becomes economical and the cost is reduced, and the phase-failure of any of three wires (16, 18, 20) is detected and diagnosed.
SOLUTION: The phase-failure detector in a compressor unit comprises a component (10) for the compressor unit including a plurality of the wires (16, 18, 20) transmitting a phase, a current converter (22) connected to one of the wires transmitting the phase, and a processor unit (24) provided to determine in which wire of a plurality of the wires transmitting the phase the phase-failure is caused, by receiving a signal from the current converter (22).
COPYRIGHT: (C)2004,JPO

2. 发明专利

JP2000064971A SCROLL COMPRESSOR AND FORMING METHOD THEREOF 失效
公开(公告)号：JP2000064971A
公开(公告)日：2000-03-03
申请号：JP22706899
申请日：1999-08-11
申请人： CARRIER CORP
发明人： LIFSON ALEXANDER , BUSH JAMES W
IPC分类号： F04C18/02 , F04C29/00 , F04C29/04
摘要： PROBLEM TO BE SOLVED: To equalize a mass flow rate of a cooling medium flowing from filling ports 42, 44 to a compression chamber in a scroll compressor. SOLUTION: Two filling ports 42, 44 for feeding a cooling medium from a cooling medium feeding source to two compression chambers are formed to an unequal shape and are disposed at different angle positions against respective closing points from a suction position in the respective compression chambers. Thus, a mass flow rate of a fluid passing through two filling ports 42, 44 is adusted and the mass flow rate of the fluid to the respective compression chambers is approximately equalized. As a result, a state that a pressure in the respective compression chambers is equal is maintained and a mixing loss is reduced when two compression chambers are joined.

3. 发明专利

JP2001193678A SCREW MACHINE 失效
公开(公告)号：JP2001193678A
公开(公告)日：2001-07-17
申请号：JP2000377025
申请日：2000-12-12
申请人： CARRIER CORP
发明人： LIFSON ALEXANDER
IPC分类号： F04C18/16 , F01C1/08 , F01C1/16 , F01C19/00 , F01C19/08 , F04C27/00
摘要： PROBLEM TO BE SOLVED: To decrease leak at the operating gap at the end of the rotor of a screw machine. SOLUTION: The end face 24 of each rotor 14 and 16 and/or the facing surface of the end plate of a housing is furnished with a surface 65 having independent small voids partitioned by a void wall structure in honeycomb form (that is, partitioned by a mesh structure of wall members coupled with one another). When crossing the surface 65, the leak gas passes these voids and void walls, so that the leak gas is repeatedly expanded and contracted, thereby causing an effect to decrease the flow of leak. The void structure of honeycomb pattern of the surface allows an effective sealing for preventing gas leak in the radial direction and circumferential direction.

4. 发明专利

JP2000104678A SCROLL COMPRESSOR LUBRICATING INSIDE OF BACK PRESSURE CHAMBER 失效
公开(公告)号：JP2000104678A
公开(公告)日：2000-04-11
申请号：JP19856599
申请日：1999-07-13
申请人： CARRIER CORP
发明人： LIFSON ALEXANDER
IPC分类号： F04C18/02 , F04C27/00 , F04C29/02 , F25B1/04
摘要： PROBLEM TO BE SOLVED: To prevent the excessive compression by reflecting the lubricating oil in a surface adjacent to a back pressure chamber, and supplying the reflected lubricating oil to the back pressure chamber seal. SOLUTION: A passage 40 is extended outside from a chamber 25 through an outside peripheral wall of a turning scroll 24. The oil discharged from the passage 40 through an opening is reflected by a tower 42 of a crank case or a shell surface 70 of a scroll compressor. Mist is formed by the collision of the oil, and the mist is supplied to a back surface 76 of the turning scroll. The back surface of the turning scroll supplies the mist to an inside seal 34, an outside seal 32 and a back pressure chamber 74. The inside seal 34, a tap 68 and a tap 36 are lubricated by the mist through a tap 35, and the outside seal 32 is lubricated by the mint through the opening. The taps 35, 36, 38 and the opening can be used singly or in combination.

5. 发明专利

JP2000081265A OPTIMIZATION OF REFRIGERATING CAPACITY, ENERGY EFFICIENCY AND RELIABILITY OF REFRIGERATION SYSTEM DURING TEMPERATURE PULL DOWN 失效
公开(公告)号：JP2000081265A
公开(公告)日：2000-03-21
申请号：JP18303499
申请日：1999-06-29
申请人： CARRIER CORP
发明人： LIFSON ALEXANDER , KARPMAN BORIS
IPC分类号： F25D11/00 , F25B41/04 , F25D29/00
摘要： PROBLEM TO BE SOLVED: To enhance capacity and energy efficiency by providing a compressor, a load removing valve, a suction modulation valve, an economizer circuit and a controller for controlling them according to a predetermined logic thereby optimizing cooling of a cooling system. SOLUTION: A compressor 26, a condenser 28, an evaporator 30, an expansion element 32 and a suction modulation valve 34 are coupled through piping to constitute a refrigeration system 24. A load removing bypass valve 36 returns partially or completely compressed refrigerant to the suction side of the compressor and an economizer circuit 38 comprising an expansion element 40, a heat exchanger 42 and a valve 39 is provided additionally. The refrigeration circuit is controlled to operate with low regulated capacity and transits to higher regulated capacity operation mode as the time elapses and then returns back to low regulated capacity operation mode when an operating limit is exceeded during a specified time interval.

6. 发明专利

JP2000199669A METHOD FOR OPERATING COMPRESSOR IN ORDINARY STATE 失效
公开(公告)号：JP2000199669A
公开(公告)日：2000-07-18
申请号：JP23101099
申请日：1999-08-18
申请人： CARRIER CORP
发明人： LIFSON ALEXANDER , KARPMAN BORIS
IPC分类号： F25D11/00 , F25B41/04 , F25B49/02 , G05D23/19
摘要： PROBLEM TO BE SOLVED: To optimize strictness of temperature control, energy efficiency and reliability by introducing to an ordinary state when a temperature in a container falls within a predetermined range, and transferring a refrigerating system to an operation of a lower capacity if the system is capable of arriving at an allowable temperature. SOLUTION: If a box temperature Tbox is within a specific range of a desired box temperature Tboxset, an ordinary state operation mode is started (step 100), and a suction regulating valve is opened or closed depending upon a difference of the temperature Tbox and the desired temperature Tboxset. When a suction regulating valve is a predetermined minimum opening or below, a timer is started (step 102). When the timer elapses a predetermined time, a refrigerating system is transferred to a lower capacity mode (step 108). If the regulating valve is not closed to the minimum opening or below, whether the opening of the valve is larger than the maximum value or not is checked (step 104). In the case of yes, a capacity of the compressor is increased (step 106).

7. 发明专利

JP2000045970A SCROLL COMPRESSOR CONTROL METHOD AND CONTROL UNIT FOR PREVENTING COUNTER ROTATION WHEN POWER SUPPLY IS STOPPED AT SHUTDOWN 失效
公开(公告)号：JP2000045970A
公开(公告)日：2000-02-15
申请号：JP19856499
申请日：1999-07-13
申请人： CARRIER CORP
发明人： LIFSON ALEXANDER
IPC分类号： F04C18/02 , F04B23/00 , F04B49/00 , F04C28/28 , F25B1/04 , F04C29/10
摘要： PROBLEM TO BE SOLVED: To prevent reverse rotation by opening a load removal bypass valve immediately before shutdown or at shutdown. SOLUTION: A load removal valve 40 and a communication passage 38 which communicates an economizer line 34 with a suction inlet line 30 are opened at shutdown or immediately therebefore. If a control unit 44 determines that a motor 24 is shut down, the load removal valve 40 is opened and then the motor 24 is shut down. By opening the load removal valve 40, the pressure inside the economizer line 34 and the suction line 30 are equalized. Accordingly, the vapor from the economizer line does not expand into the lap of the scroll compressor. As a result, an undesirable rotation in a reverse direction in a stopped state of power supply is eliminated.

8. 发明专利

JP2000027767A REVERSE ROTATION DECISION SYSTEM OF COMPRESSOR 失效
公开(公告)号：JP2000027767A
公开(公告)日：2000-01-25
申请号：JP15738099
申请日：1999-06-04
申请人： CARRIER CORP
发明人： LIFSON ALEXANDER , KARPMAN BORIS , LAMB JOHN DOUGLAS
IPC分类号： F04C28/28 , F04B49/00 , F04B49/10 , F04C18/02 , F25B49/02
摘要： PROBLEM TO BE SOLVED: To accurately detect the generation of reverse rotation and to prevent reverse rotation caused by erroneous wiring by detecting a characteristic of fluid flowing in a compressor, that is, parameters such as pressure and temperatures and comparing the detected parameter values with predicted values at the time of a normal operation. SOLUTION: In a refrigerating system 20, power is fed from a three-phase power source part 22 having three electric wire 24 connected with a connector 26, power feeding to the connector 26 is transmitted to a motor 38 of a compressor 40 via a connector 28, electric wire 30, connectors 32, 34 and electric wire 36, and the motor 38 is rotated and driven. When this compressor 40 is operated, pressure of discharge side piping 46 rises with the starting of the compressor 40. Pressure on a suction side and a discharge side of the compressor 40 is detected by each sensor 48, 50 and the detected values are compared in a control part 52. When fixed minimum differential pressure is not generated within set time, reverse rotation of the motor 38 is recognized and an alarm is generated through an alarm panel 54.

9. 发明专利

JPH11223187A SCROLL COMPRESSOR 失效
公开(公告)号：JPH11223187A
公开(公告)日：1999-08-17
申请号：JP31274898
申请日：1998-11-04
申请人： CARRIER CORP
发明人： LIFSON ALEXANDER , BUSH JAMES W
IPC分类号： F04C29/06 , F04C18/02 , F04C28/26 , F04C29/00 , F04C29/10
摘要： PROBLEM TO BE SOLVED: To equalize the pressure of both chambers when two chambers are joined and communicate with a discharge opening by sealing two scroll compression chambers from the suction, and communicating two chambers by a pressure balance groove before the fluid in the chambers are joined and communicate with the discharge opening. SOLUTION: A pressure equalizing groove 31 is formed between a lap part 50 of a fixed scroll facing to the outside in the radial direction and a lap part 51 of a fixed scroll facing to the inside in the radial direction opposite to each other. The pressure equalizing groove 31 is mounted so that it communicates the chamber 33 with 35 through the end parts 38, 40 of the pressure equalizing groove 31 after the chambers 33, 35 are sealed from the suction before the fluid in the chambers 33, 35 are joined and communicate with a discharge opening 26. When the unbalance of the pressure exists between the chambers 33, 35, the end parts 38, 40 communicate with the chambers 33, 35 to equalize the pressure, and the pressure of the chambers 33, 35 are equalized when two chambers are joined and completely mixed with each other.

10. 发明专利

JP2001296066A REFRIGERATING CYCLE 失效
公开(公告)号：JP2001296066A
公开(公告)日：2001-10-26
申请号：JP2001089627
申请日：2001-03-27
申请人： CARRIER CORP
发明人： LIFSON ALEXANDER , KARPMAN BORIS
IPC分类号： F25B1/00 , F25B1/04 , F25B1/10 , F25B5/02 , F25B40/02 , F25B41/04
摘要： PROBLEM TO BE SOLVED: To ease the temperature rise in the economizer line of a refrigerating cycle. SOLUTION: A cutoff valve 48 for cutting off the flow of refrigerant in an economizer line 28 is arranged in such a manner that the distance from the cutoff valve 48 to an economizer heat exchanger 34 is smaller than the distance from the cutoff valve to a compressor 22, or an additional volume part is provided in the economizer line 28. Thereby, the length or the volume of the blocked part of the economizer between the cutoff valve 48 and the compressor 22 becomes relatively large in a condition in which the cutoff valve 48 is closed.

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