公开(公告)号：US3633869A

公开(公告)日：1972-01-11

申请号：US3633869D

申请日：1970-07-31

Applicant: DANFOSS AS

Inventor： LEHMANN ROLF-KONRAD

IPC: F16K31/06

CPC classification number: F16K31/0689

Abstract: A solenoid valve in which the solenoid having the valve element connected to the armature can be moved as a unit relative to the seat of the valve so that the stroke of the solenoid is varied without making any adjustment in the electrical characteristics of the solenoid. The valve element is connected to the armature by a bellows and the solenoid unit is mounted on the valve bonnet on a threaded portion so that it can be rotated on the thread so the unit as a whole is moved relative to the valve seat to vary the stroke of the solenoid armature without any other adjustment.

Abstract translation: 其中具有连接到电枢的阀元件的螺线管的电磁阀可以相对于阀的座位作为单元移动，使得螺线管的冲程在不对螺线管的电特性进行任何调节的情况下改变。 阀元件通过波纹管连接到电枢，并且螺线管单元在螺纹部分上安装在阀帽上，使得其可以在螺纹上旋转，使得单元作为整体相对于阀座移动以改变 螺线管电枢的行程无任何其他调整。

公开(公告)号：US3614494A

公开(公告)日：1971-10-19

申请号：US3614494D

申请日：1970-05-18

Applicant: DANFOSS AS

Inventor： BORCHERS ALWIN ,  SJOTUN KYRRE GUTTORM ,  HANSEN GUNNAR LYSHOJ ,  CLAUSEN JORGEN RONO

IPC: H02K7/08 ,  H02K17/04 ,  H02K17/00

CPC classification number: H02K16/02 ,  H02K7/085 ,  H02K17/04

Abstract: The invention relates to a single-phase electric motor assembly for installations such as oil burners. The motor has two oppositely rotatable rotors with one rotor adapted to drive a blower and the other adapted to drive an oil pump. The stator has main and secondary windings offset from each other which are switchable on and off together. The current phase in the secondary winding leads by up to 20* upon startup and remains above 0* at the highest operating voltage. There is a time lag during which the blower rotor builds up speed and it is only thereafter that its rotary field acts on the pump rotor to drive it in the opposite direction. Alternate hydraulic and mechanical means are provided for making the pump effective in only one operating direction.

公开(公告)号：US3609270A

公开(公告)日：1971-09-28

申请号：US3609270D

申请日：1970-01-15

Applicant: DANFOSS AS

Inventor： JORGENSEN JORGEN ,  BASSE TAGE S

IPC: H01H13/36

CPC classification number: H01H13/36

Abstract: The invention relates to an electric reversing switch assembly having at least one fixed contact and a pair of movable contacts. The assembly includes a main contact actuating arm and a snapaction spring, such as an omega spring, attached to the actuating arm. The movable contacts have lugs and are resiliently biased towards the fixed contact. An actuating element connected to the actuating arm lifts one of said movable contacts from the fixed contact while allowing the other of the movable contacts to abuttingly engage the fixed contact.

公开(公告)号：US3606581A

公开(公告)日：1971-09-20

申请号：US3606581D

申请日：1969-10-06

Applicant: DANFOSS AS

Inventor： SJOTUN KYRRE G

IPC: F23K5/14 ,  H02K7/14 ,  H02K17/16 ,  F04B31/00 ,  F04B49/00 ,  F04B49/06

CPC classification number: F23K5/145 ,  H02K7/14 ,  H02K17/16

Abstract: THE INVENTION RELATES TO AN ELECTRIC MOTOR DRIVEN PUMP AND BLOWER ASSEMBLY FOR OIL BURNERS. THE ASSEMBLY INCLUDES A SINGLE STAGE A SYNCHRONOUS MOTOR HAVING FIRST AND SECOND INDEPENDENTLY ROTATABLE ROTORS AND A COMMON STATOR. THE ROTORS ARE RESPECTIVELY OF GREATER AND LESSER INERTIA WITH THE BLOWER BEING CONNECTED TO THE FIRST ROTOR AND THE PUMP BEING CONNECTED TO THE SCOND ROTOR. THE PUMP OPERATES TO PUMP OIL WHEN TURNED IN ONE DIRECTION BUT IS INOPERATIVE IN THE OPPOSITE DIRECTION. THIS APPARATUS IS OPERATED WITH A SECOND WINDING AND SWITCHING MEANS SO THAT, UPON STARTING, THE PUMP IS FIRST TURNED IN THE INOPERATIVE DIRECTION AND, UPON THE BLOWER REACHING ITS NORMAL OPERATING SPEED, THE PUMP DIRECTION IS

REVERSED SO THAT THERE IS A LAG BETWEEN THE TIME THE BLOWER BEGINS OPERATING AND THE PUMP BEGINS PUMPING. UPON STOPPING, BOTH ROTORS ARE DE-ENERGIZED AT THE SAME TIME BUT THE LARGER INERTIA OF THE LOWER ROTOR WILL CAUSE THE BLOWER TO ROTATE AFTER THE PUMP ROTOR HAS STOPPED.

公开(公告)号：US3604995A

公开(公告)日：1971-09-14

申请号：US3604995D

申请日：1968-08-27

Applicant: DANFOSS AS

Inventor： JENSEN ARNE ,  PETERSEN TOM KASTRUP

IPC: H02P27/06 ,  H02P27/08 ,  H03K7/08 ,  H02P5/16

CPC classification number: H02P27/08 ,  H02P27/047 ,  H03K7/08

Abstract: Apparatus producing a width modulated square wave for use in a motor control circuit controlling the speed of an alternatingcurrent motor. A low frequency three-phase generator with stationary components develops three wave outputs integrated and summed with a high frequency wave signal, in a summation circuit, produced by a frequency generator. The sign of the outputs of the summation circuit is ascertained by zero level detectors and employed for controlling the motor speed. A direct-current control voltage is applied to the apparatus to control the amplitude of the high and low frequency waves.

公开(公告)号：US3600656A

公开(公告)日：1971-08-17

申请号：US3600656D

申请日：1970-02-02

Applicant: DANFOSS AS

Inventor： GRAMKOW ASGER

IPC: H02P1/42 ,  H02P5/40 ,  H02P1/44

CPC classification number: H02P1/42

Abstract: The invention relates to a starting switch assembly for a single phase asynchronous motor. The assembly includes a symmetrically controlled semiconductor valve in series with the motor starting coil. The control electrode of the valve is connected by way of a PTC resistor to the end of the starting coil which is remote from the valve. In this arrangement the PTC resistor is controlled directly by the power supply voltage and the time required for the PTC resistor to reach the cutout temperature depends substantially only on the characteristics of the PTC resistor and is independent of the particular construction of the motor.

公开(公告)号：US3600636A

公开(公告)日：1971-08-17

申请号：US3600636D

申请日：1969-11-12

Applicant: DANFOSS AS

Inventor： PETERSEN TOM KASTRUP

IPC: H01F27/40 ,  H05K7/20 ,  H02B1/10

CPC classification number: H01F27/40

Abstract: The invention relates to an assembly of electrical apparatus which includes a power section and a control section. A container is provided for housing the power section and insulating cooling fluid for the power section. A cover plate of insulating material closes the top of the container and the control section is mounted on the cover plate. Holes are provided in the insulated cover plate with each hole being individually surrounded by a metal coating bonded to the insulating material. Connecting wires extend from above and/or below into the holes and each connecting wire terminates a short distance from the opposite side of its hole. Each connecting wire is soldered to the metal coating surrounding its hole to provide an electrical connection and to provide a fluidtight seal for the hole. Printed circuit means on the underneath side of the cover plate includes the metal coatings surrounding the hole to provide electrical interconnections between the soldered connecting wires.

公开(公告)号：US3600110A

公开(公告)日：1971-08-17

申请号：US3600110D

申请日：1969-06-03

Applicant: DANFOSS AS

Inventor： ROMER BENDT WEGGE ,  MEISINGSET LARS ,  VALBJORN KNUD V ,  KNUDSEN JORGEN DAHLMAN

IPC: F04B39/00 ,  F04B39/12

CPC classification number: F04B39/0061 ,  F04B39/0072 ,  F04B39/12

Abstract: The invention relates to a hermetically enclosed refrigeration compressor unit. The unit includes two sheet metal chambers for reducing the sound due to pressure effects. The sound reducing chambers are shallow in construction and have a common interior wall which extends upwardly between the cylinder and head of the compressor where it forms a part of the valving. Another wall of the sound reducing chambers also extends upwardly and forms a part of the cylinder head.

公开(公告)号：US3599509A

公开(公告)日：1971-08-17

申请号：US3599509D

申请日：1969-10-02

Applicant: DANFOSS AS

Inventor： ROMER BENDT WEGGE

IPC: F04B39/00 ,  F16C3/10 ,  F25B31/02

CPC classification number: F25B31/02 ,  F04B39/0094 ,  F16C3/10 ,  F16C2362/52 ,  Y10T29/49286 ,  Y10T74/2173 ,  Y10T74/2177

Abstract: The invention is a crankshaft made from two sheet metal stampings having longitudinally extending edges which are joined as by welding to form a unitary crankshaft.

公开(公告)号：US3592110A

公开(公告)日：1971-07-13

申请号：US3592110D

申请日：1969-08-05

Applicant: DANFOSS AS

Inventor： ROMER BENDT WEGGE ,  VALBJORN VAGAN ,  HOLME BENT M K

IPC: F04B39/00 ,  F04B39/12 ,  F01B29/00

CPC classification number: F04B39/122 ,  F04B39/0055

Abstract: The invention relates to a motor compressor assembly of the type used for small refrigerating machines. It involves a construction for forming noise-reducing chambers wherein the chambers are formed between recesses in a central bore of the casing and a cup shaped element inserted in the central bore. Grooves are formed in the central bore which are covered by the peripheral wall of the insert and the grooves form passages connecting the noise reducing chambers.