公开(公告)号：US4955194A

公开(公告)日：1990-09-11

申请号：US418969

申请日：1989-10-10

Applicant: Thorkild Christensen ,  Svend E. Thomsen ,  Siegfried Zenker

Inventor： Thorkild Christensen ,  Svend E. Thomsen ,  Siegfried Zenker

IPC: F15B11/00 ,  F15B11/05 ,  F15B21/04 ,  F16K31/00 ,  F16K31/64 ,  F16K31/70 ,  F16K47/00 ,  F16L55/027

CPC classification number: F15B11/003 ,  F15B21/045 ,  F16K31/002 ,  F16K47/00 ,  F16L55/027 ,  F15B2211/20553 ,  F15B2211/30535 ,  F15B2211/31576 ,  F15B2211/324 ,  F15B2211/40515 ,  F15B2211/413 ,  F15B2211/41581 ,  F15B2211/428 ,  F15B2211/46 ,  F15B2211/50545 ,  F15B2211/8613

Abstract: A damping arrangement for damping the oscillations of valves which are controlled by pressure fluid and the control pressure conduits of which contain a throttle. A characteristic is that initial oscillations can be rapidly stabilized independently of the operating temperature of the pressure fluid. This is accomplished by the throttle having a throttle gap of which the height varies oppositely to the temperature of the pressure fluid so as to compensate fully or partially for changes in the hydraulic resistance that are occasioned by the temperature. The throttle gap is mostly traversed by laminar flow and consequently there is a high hydraulic throttling resistance even at low speeds of flow. The throttle is therefore also adapted effectively to damp small oscillations of the valve element so that the initial oscillations are rapidly stabilized.

Abstract translation: 一种阻尼装置，用于阻尼由压力流体控制的阀的振荡，并且其控制压力管道包含油门。 其特征是初始振荡可以独立于压力流体的操作温度而迅速稳定。 这是通过节气门实现的，其节气门间隙的高度与压力流体的温度相反地变化，以便完全或部分地补偿由温度引起的液压阻力的变化。 油门间隙主要是通过层流运动，因此即使在低流速下也存在高液压节流阻力。 因此，节气门也有效地适应于阻止阀元件的小振荡，使得初始振荡快速稳定。

公开(公告)号：US20250102243A1

公开(公告)日：2025-03-27

申请号：US18888382

申请日：2024-09-18

Applicant: Danfoss A/S

Inventor： Yanxing LI ,  Jing ZHOU ,  Jing YANG

IPC: F28F1/34 ,  F28D1/04 ,  F28D21/00

Abstract: A heat exchanger and an air conditioning system having the same. The heat exchanger includes a plurality of fins and a row of heat transfer tubes. The fin includes a fin body and a plurality of columns of heat exchange tube slots formed in the fin body. The column of heat exchange tube slots includes a plurality of heat exchange tube slots arranged in a first direction, the plurality of fins being arranged in a second direction perpendicular to the first direction, and the plurality of columns of heat exchange tube slots being arranged in a third direction perpendicular to the first direction and the second direction. The row of heat exchange tubes is provided in the heat exchange tube slot of the column of heat exchange tube slots, and the row of heat exchange tubes includes one heat exchange tube or a plurality of heat exchange tubes. A length of at least one heat exchange tube slot in the third direction is greater than a heat exchange tube size of the row of heat exchange tubes inserted in the at least one heat exchange tube slot in the third direction. Therefore, the performance of the heat exchanger and the air conditioning system can be improved.

公开(公告)号：US20250102241A1

公开(公告)日：2025-03-27

申请号：US18888289

申请日：2024-09-18

Applicant: Danfoss A/S

Inventor： Jing ZHOU ,  Yanxing LI

IPC: F28F1/32 ,  F28D1/053 ,  F28F9/02

Abstract: A heat exchanger, a bent heat exchanger formed by bending the heat exchanger, and an air conditioning system having the heat exchanger or the bent heat exchanger. The heat exchanger includes: a plurality of rows of heat exchange tubes arranged in a first direction; and a plurality of fins arranged in a second direction perpendicular to the first direction. Each of the plurality of fins includes a fin body and a plurality of heat exchange tube slots formed in the fin body, one or more heat exchange tubes of each row of heat exchange tubes of the plurality of rows of heat exchange tubes being inserted into one heat exchange tube slot of the plurality of heat exchange tube slots; and a length of at least one heat exchange tube slot of the plurality of heat exchange tube slots of at least one fin of the plurality of fins in a third direction perpendicular to the first direction and the second direction is greater than a heat exchange tube size of the row of heat exchange tubes inserted into the at least one heat exchange tube slot in the third direction to form a gap for passage of water in the at least one heat exchange tube slot, thereby improving the performance of the heat exchanger, bent heat exchanger and air conditioning system.

公开(公告)号：US20250067378A1

公开(公告)日：2025-02-27

申请号：US18943346

申请日：2024-11-11

Applicant: Danfoss A/S

Inventor： Amit Ramesh SHENDE

IPC: F16L37/52 ,  F16L29/04 ,  F16L37/34 ,  F16L37/35 ,  H05K7/20

Abstract: The present disclosure relates generally to a coupling assembly made up of a male fluid coupler and a female fluid coupler for a fluid line. The male and female fluid couplers are closed to flow in the uncoupled state and are open to flow when coupled. The male fluid coupler can include an alignment compensation arrangement that can adjust for any initial misalignment between the male and female fluid couplers. The alignment compensation arrangement can function as a universal connection joint to allow the male fluid coupler to universally pivot and move radially.

公开(公告)号：US20250060113A1

公开(公告)日：2025-02-20

申请号：US18804268

申请日：2024-08-14

Applicant: Danfoss A/S

Inventor： Sinisa Bogar ,  Miran Muhic ,  Derek Foong King Soon

IPC: F24D19/10 ,  F24F11/84 ,  G05D7/06

Abstract: A device (10) for controlling a system (30) for heating and cooling including at least one valve actuator (12) for a valve (14) of a bypass line (16) of the system (30), and a flow measuring device (20) for a return line (18) of the system (30), the return line (18) leading a combined flow from the bypass line (16) and a heating or cooling device return line (32) from at least one heating or cooling device (22) to at least one thermal energy source (24), the flow measuring device (20) being configured to determine and provide at least one actual flow value of the combined flow, wherein the valve actuator (12) is configured to receive the actual flow value and to control the valve (14) based on the actual flow value. The disclosure provides a device (30) to control a system for heating or cooling that is easier to handle and has reduced costs.

公开(公告)号：US20250044034A1

公开(公告)日：2025-02-06

申请号：US18787007

申请日：2024-07-29

Applicant: Danfoss A/S

Inventor： Zhifeng ZHANG ,  Donghui FANG

IPC: F28D9/00 ,  F28F3/10

Abstract: A plate heat exchanger includes a plurality of heat transfer plates; a first fluid channel and a second fluid channel formed between adjacent heat transfer plates and fluidly isolated from each other; an upstream outlet port and a downstream inlet port formed in each of the heat transfer plates; and a fluid communication device. The first fluid channel includes a fluid channel upstream portion and a fluid channel downstream portion that are separated from each other. The upstream outlet port is communicated to the fluid channel upstream portion of the first fluid channel, while the downstream inlet port is communicated to the fluid channel downstream portion of the first fluid channel. The upstream outlet port and downstream inlet port are fluidly communicated with each other through the fluid communication device. By adopting the plate heat exchanger according to the present disclosure, a number of parts may be reduced.

公开(公告)号：US12196468B2

公开(公告)日：2025-01-14

申请号：US17514002

申请日：2021-10-29

Applicant: Danfoss A/S

Inventor： Jan Prins ,  Peter Reichwald ,  Salvatore Piscopiello

IPC: F25B49/02 ,  G05B13/02

Abstract: A method for configuring a plurality of operating setpoints for a vapour compression system (1) is disclosed. The plurality of operating setpoints are divided into a first group (12) of operating setpoints to be generated manually and a second group (13) of operating setpoints to be generated automatically, and the operating setpoints are operated in accordance therewith. The manually generated operating setpoints (12) and the automatically generated operating setpoints (13) are provided to a setpoint manager (11), and the setpoint manager (11) checks if the provided operating setpoints (12, 13) are in compliance with a set of rules. In the case that at least some of the provided operating setpoints (12, 13) are not in compliance with the set of rules, the setpoint manager (11) adjusts at least some of the provided operating setpoints (12, 13) in accordance with the set of rules, thereby obtaining an adjusted set of operating setpoints. The vapour compression system (1) is subsequently controlled in accordance with the adjusted set of operating setpoints.

公开(公告)号：US20250012489A1

公开(公告)日：2025-01-09

申请号：US18712375

申请日：2023-01-31

Applicant: Danfoss A/S

Inventor： Sushank THOTAKOORI ,  Marius DRAGUT ,  Lin Xiang SUN ,  Brandon Keith PRITCHARD ,  Wenchao CAO ,  Ruiguo GAO ,  Joshua David FLESCH

IPC: F25B31/00 ,  B33Y10/00 ,  F25B49/02

Abstract: A housing for a refrigerant compressor may include a first portion made of a metallic material and surrounding moving parts of the refrigerant compressor. The housing may further include a second portion mounted to the first portion and surrounding non-moving, electronic parts of the refrigerant compressor. The second portion is made of a plastic material.

公开(公告)号：US12097451B2

公开(公告)日：2024-09-24

申请号：US16461938

申请日：2017-11-15

Applicant: Danfoss A/S

Inventor： Jan Prins ,  Frede Schmidt ,  Kenneth Bank Madsen ,  Kristian Fredslund

IPC: B01D35/147 ,  F25B1/10 ,  F25B49/02 ,  F25B41/00 ,  F25B41/39

CPC classification number: B01D35/1475 ,  F25B1/10 ,  F25B49/02 ,  F25B49/022 ,  F25B41/00 ,  F25B41/39 ,  F25B2309/14 ,  F25B2341/0012 ,  F25B2400/075 ,  F25B2400/23 ,  F25B2500/19 ,  F25B2600/0253 ,  F25B2600/111 ,  F25B2600/2509 ,  F25B2600/2513 ,  F25B2700/193 ,  F25B2700/1931 ,  F25B2700/195 ,  F25B2700/21152 ,  F25B2700/21163 ,  Y02B30/70

Abstract: A method for controlling a vapour compression system (1) is disclosed. Malfunctioning of a gas bypass valve (8) is registered. An actual opening degree of the gas bypass valve (8) is derived, and a target opening degree of the gas bypass valve (8) is derived, based on one or more control parameters of the vapour compression system (1). The actual opening degree is compared to the target opening degree, and the vapour compression system (1) is controlled based on the comparison, and in order to match a mass flow of gaseous refrigerant through the gas bypass valve (8) to the actual opening degree of the gas bypass valve (8).

公开(公告)号：US12078380B2

公开(公告)日：2024-09-03

申请号：US17836024

申请日：2022-06-09

Applicant: Danfoss A/S

Inventor： Wayne Edgar Alphonso

IPC: F24F11/89 ,  F24F11/36 ,  F24F110/65

CPC classification number: F24F11/89 ,  F24F11/36 ,  F24F2110/65

Abstract: A refrigerant gas leak sensor for a HVAC system includes a housing, a gas sensor core element and mounting means. The housing has primary walls delimiting an inner volume. The gas sensor core element is arranged in the inner volume. The mounting means is configured to attach the housing to a mounting surface, wherein a first surface of a primary wall of the housing faces the mounting surface and wherein a gap is provided between the first surface and the mounting surface. An opening is formed in the housing for exposing the gas sensor core element to gases within the HVAC system, wherein the opening is provided on the first surface. The refrigerant gas leak sensor may be provided as part of an air handling unit.