公开(公告)号：WO1994004874A1

公开(公告)日：1994-03-03

申请号：PCT/DK1993000262

申请日：1993-08-13

Applicant: DANFOSS A/S ,  KIRKELUND, Poul

Inventor： DANFOSS A/S

IPC: F23K05/04

CPC classification number: F23K5/04

Abstract: An oil supply arrangement (1') for a burner feed device (2) is provided, having a pump (5') which has two main connections, namely, an intake connection (11) and an output connection (13') which is connected to the burner feed device (2). In arrangement of that kind, it is desirable to combine an improved efficiency with a high intake capacity. For that purpose, the pump (5') is in the form of a gear pump, the gear assembly (7, 8) of which in one rotation forms displacement chambers (10) that periodically increase and decrease in volume, at least one auxiliary connection (20, 22) being provided in the circulation direction between the main connections (11, 13'), the auxiliary connection (20, 22) being in fluid connection with the intermediate space between the components of the gear assembly (7, 8) and the main connection (11, 13') located downstream in the circulation direction.

Abstract translation: 提供一种用于燃烧器供给装置（2）的供油装置（1'），其具有具有两个主要连接的泵（5'），即具有进气连接件（11）和输出连接件（13'）的输出连接件 连接到燃烧器进料装置（2）。 在这种布置中，希望将提高的效率与高吸入能力相结合。 为此，泵（5'）是齿轮泵的形式，齿轮组件（7,8）在一个旋转中形成周期性地增加和减小体积的位移腔（10），至少一个辅助 连接件（20,22）在主连接件（11,13'）之间沿循环方向设置，辅助连接件（20,22）与齿轮组件（7,8）的部件之间的中间空间流体连接 ）和位于循环方向下游的主连接（11,13'）。

公开(公告)号：WO2023073077A1

公开(公告)日：2023-05-04

申请号：PCT/EP2022/080028

申请日：2022-10-26

Applicant: DANFOSS A/S

Inventor： VAN BEEK, Johan

IPC: F25B13/00 ,  F16K11/074 ,  F16K27/04 ,  F16K37/00 ,  F25B41/26

Abstract: The present invention pertains to a four-way valve for a heat-pump arrangement. The valve comprises a housing with four fluid connection ports, a rotatable valve element for switching the connections between the fluid connection ports, an actuator for rotating the valve element and sensor components on a low pressure side and a high pressure side of the valve for measuring properties of the fluid inside the housing. The invention is also directed at a heat-pump arrangement comprising a corresponding four-way valve and a housing for a four-way valve.

公开(公告)号：WO2023043662A1

公开(公告)日：2023-03-23

申请号：PCT/US2022/043009

申请日：2022-09-09

Applicant: DANFOSS A/S

Inventor： SONG, Danny ,  LI, Tianlei ,  KRAMER, Hunter ,  DATLA, Soma Lakshmi Satya Sravan Bala Varma

IPC: H01L23/34 ,  H01L23/473 ,  F28F1/12 ,  H01L23/36 ,  H01L23/46 ,  H01L23/467 ,  F28F3/02

Abstract: A refrigerant system according to an example of this disclosure includes a main refrigerant loop in communication with a condenser, an evaporator, and a compressor. A heat exchanger is arranged to cool electronic components. The heat exchanger has a cooling line, which is configured to receive refrigerant from the main refrigerant loop and a heat sink in communication with air surrounding the electronic components.

公开(公告)号：WO2023011901A1

公开(公告)日：2023-02-09

申请号：PCT/EP2022/070037

申请日：2022-07-18

Applicant: DANFOSS A/S

Inventor： FRANCK, Martin Lynder ,  PETEJAN, Igor

IPC: F16H25/20

Abstract: The present invention relates to an actuator (5) comprising a driving device (15) adapted to move a spindle (20) in first and second rotational directions (200), where the spindle (20) is connected to a nut (25) such that when the spindle (20) rotates the nut (25) is translocated in a third or fourth translational direction (210), where the movement of the nut (25) acts on a deformable part (30), such that the translocation of the nut (25) is reflected in a deformation of the deformable part (30). The deformable part (30) is deformed into a hollow (35) formed between the driving device (15) and the deformable part (30), and the spindle (20) reaches through the deformable part (30) and the hollow (35).

公开(公告)号：WO2023275398A1

公开(公告)日：2023-01-05

申请号：PCT/EP2022/068351

申请日：2022-07-01

Applicant: DANFOSS A/S

Inventor： VAN BEEK, Johan ,  BIRKELUND, Michael ,  MAYWALD, Uwe

IPC: F25B41/26

Abstract: The present invention pertains to a four-way reversing valve for a high capacity reversible heat pump compressor. The valve comprises a housing with four ports, namely a discharge port, a suction port, an evaporator port and a condenser port. It further comprises a conically shaped rotor provided rotatably inside the housing for varying flow paths between the four ports, wherein a large diameter face of the rotor comprises two separated openings, wherein a first opening fluidly connects the large diameter face to a small diameter face of the rotor via a first fluid conduit and a second opening fluidly connects the large diameter face to a radially outer portion of the rotor via a second fluid conduit. The invention also pertains to a set comprising two or more four-way reversing valves.

公开(公告)号：WO2022194489A1

公开(公告)日：2022-09-22

申请号：PCT/EP2022/054095

申请日：2022-02-18

Applicant: DANFOSS A/S

Inventor： REICHWALD, Peter ,  PRINS, Jan ,  PISCOPIELLO, Salvatore

IPC: F25B41/39

Abstract: A method for controlling a vapour compression system (1) is disclosed. The vapour compression system (1) comprises a compressor unit (2) comprising at least one main compressor (3) and at least one receiver compressor (4), a heat rejecting heat exchanger (5), a receiver (7), an expansion device (8) and an evaporator (9) being arranged in a refrigerant path. The vapour compression system (1) further comprises a bypass valve (12) fluidly interconnecting the gaseous outlet (10) of the receiver (7) and the main compressor(s) (3). A pressure difference across the bypass valve (12) is measured or derived, and a mass flow rate of refrigerant through the bypass valve (12) is derived, based at least on the pressure difference across the bypass valve (12), and using a fluid model. A minimum mass flow rate of refrigerant required to operate the receiver compressor (4) is derived, based on a minimum displacement volume of the receiver compressor (4) and using a fluid model taking prevailing operating conditions into account. In the case that the derived mass flow rate of refrigerant through the bypass valve (12) exceeds the derived minimum mass flow rate of refrigerant required to operate the receiver compressor (4), the receiver compressor (4) is started and the bypass valve (12) is closed.

公开(公告)号：WO2022187038A1

公开(公告)日：2022-09-09

申请号：PCT/US2022/017412

申请日：2022-02-23

Applicant: DANFOSS A/S

Inventor： LI, Tianlei ,  SUN, Lin Xiang

IPC: B23P15/00 ,  B23P15/04 ,  F01D5/04 ,  F04D29/22 ,  F04D29/26 ,  F04D29/32

Abstract: In some aspects, the techniques described herein relate to a method of manufacturing a shrouded impeller, including: arranging a shell relative to an impeller, wherein the impeller includes a plurality of blades, wherein the shell includes a plurality of slots, and wherein the arranging step includes aligning each of the slots with a tip of a respective one of the blades of the impeller; applying brazing paste to each of the tips by using the slots to direct the brazing paste to the tips; arranging a shroud relative to the impeller; and joining the impeller and shroud using a brazing technique.

公开(公告)号：WO2022136379A1

公开(公告)日：2022-06-30

申请号：PCT/EP2021/087004

申请日：2021-12-21

Applicant: DANFOSS A/S

Inventor： THALER, Tilen

IPC: G05D16/10

Abstract: A multi-way valve (1) with a first valve housing (6) defining a first hollow (60) and including a first valve (5), a first fluid connection (10), a second fluid connection (11) and a third fluid connection (12), and where, - a first fluid passage is formed between the first fluid connection (10) and the third fluid connection (12), which passage can be closed by a valve body (15, 16), and - where a second fluid passage is formed between the second fluid connection (11) and the third fluid connection (12), which passage can be closed by a valve body (15, 16), and - an actuating element (30) that is moveable such that when the actuating element (30) is moved from the central position into the first direction, the valve body (15, 16) is moved by in closing direction relative to the first valve seat (25) and when the actuating element (30) is moved into the opposite second direction the valve body (15, 16) is moved in closing direction relative to the second valve sat (26), where the first valve (1) connected to a pressure regulating valve (300) such that the first fluid passage from respectively the first fluid connection (10) to the third fluid connection (12) passes a pressure regulator valve opening defined by a pressure regulator valve seat (340) and pressure regulator valve element (350).

公开(公告)号：WO2021230909A1

公开(公告)日：2021-11-18

申请号：PCT/US2020/063994

申请日：2020-12-09

Applicant: DANFOSS A/S

Inventor： DOBRICA, Mihai B. ,  LI, Tianlei

IPC: F16J15/44 ,  F16J15/34

Abstract: A refrigerant compressor according to an exemplary aspect of the present disclosure includes, among other things, a floating ring seal having a nose configured to contact a housing. Further, a low friction coating including carbon nanotubes (CNTs) is applied to one or both of the nose and the housing. In another aspect of this disclosure, the floating ring seal has first and second noses configured to contact the housing, and the first nose is radially spaced-apart from the second nose.

公开(公告)号：WO2021037970A1

公开(公告)日：2021-03-04

申请号：PCT/EP2020/073956

申请日：2020-08-27

Applicant: DANFOSS A/S

Inventor： VAN BEEK, Johan ,  BUSBY, Bruce ,  BIRKELUND, Michael

IPC: F25B13/00 ,  F25B43/00 ,  F25B43/02

Abstract: A common unit (10) for a refrigerant gas handling system (1) is described, the common unit (10) comprising an accumulator (4), a check valve (11), and a reversing valve (3). The check valve (11) and the reversing valve (3) are arranged together in a first area and the accumulator (4) is arranged in a second area. Such a system should achieve a good efficiency and a high reliability. To this end, the reversing valve (3) is connected to an actuator, wherein the actuator is arranged in the second area as well.