公开(公告)号：US20180055184A1

公开(公告)日：2018-03-01

申请号：US15689693

申请日：2017-08-29

Applicant: Dyson Technology Limited

Inventor： Brian MCVEIGH ,  Christopher Ashley MONK ,  Nathan Haruna Waters IMHASLY ,  Robert Mark Brett COULTON ,  Daniel John THOMPSON

IPC: A45D6/20

CPC classification number: A45D6/20 ,  A45D20/12

Abstract: A handheld appliance having a body and an attachment, the body including an outer tube and fluid flow path extending from a fluid inlet to a fluid outlet within the outer tube and a printed circuit board (PCB) arranged within the fluid flow path wherein, the PCB is housed within a housing. The body may further include an inner wall and the inner wall provides the housing for the PCB and the fluid flow path may extend around the housing. The housing may be generally rectangular and may extend across an internal radius of the outer tube. The fluid flow path may extend around both sides of the housing. The housing may include a heat sink which may be in contact with the fluid flow path on one side and with components on the PCB on the other side.

公开(公告)号：US20240200710A1

公开(公告)日：2024-06-20

申请号：US18288105

申请日：2022-04-19

Applicant: Dyson Technology Limited

Inventor： Ignacio Justo PEREZ PABLOS ,  Christopher Ashley MONK

IPC: F16L55/033

CPC classification number: F16L55/033

Abstract: A method of reducing noise in a device configured to generate an air flow. The device includes an air flow duct arranged to convey a flow of air, a gas-filled cavity disposed beside the air flow duct, and a wall separating the air flow duct and the cavity. The wall includes at least one aperture. The method includes optimising an acoustic property for an acoustic resistive screen that is to be held in tension over the aperture, by: determining geometric properties of the cavity, the aperture and the air flow duct; determining, based on the geometric properties, a noise reduction for the device for each of a series of values for the acoustic property of the screen; and comparing the respective noise reductions for the series of values to determine an optimised value of the series.

公开(公告)号：US20240200576A1

公开(公告)日：2024-06-20

申请号：US18288125

申请日：2022-04-19

Applicant: Dyson Technology Limited

Inventor： Philip Tennison REILLY ,  Peter HARLEY ,  Christopher Ashley MONK ,  Ignacio Justo PEREZ PABLOS

IPC: F04D29/66 ,  F04D17/10

CPC classification number: F04D29/665 ,  F04D17/10

Abstract: A device configured to generate an air flow, the device including: a compressor; an air flow duct arranged to convey a flow of air generated by the compressor; a gas-filled cavity disposed beside the air flow duct; a wall separating the air flow duct and the cavity, the wall including at least one aperture; and an acoustic resistive screen covering and held in tension over the aperture of the wall. The screen is in fluid contact with air in the air flow duct and gas in the cavity and is configured to resist air flow between the duct and the cavity. The resistive screen and the cavity together define a noise-damping resonator.

公开(公告)号：US20240229815A1

公开(公告)日：2024-07-11

申请号：US18290271

申请日：2022-05-06

Applicant: Dyson Technology Limited

Inventor： Raul CORRALEJO ANTON ,  Robert James KYLE ,  Christopher Ashley MONK

IPC: F04D29/08 ,  F04D29/16 ,  F04D29/28 ,  F04D29/44

CPC classification number: F04D29/083 ,  F04D29/161 ,  F04D29/281 ,  F04D29/441

Abstract: A compressor is provided for use in domestic appliances. The compressor includes: an impeller including an inlet, an outlet, a hub defining a rotational axis of the impeller, a plurality of impeller blades that extend from the hub, and a shroud that at least partially surrounds the impeller blades; a housing that at least partially surrounds the shroud and that is coaxially arranged with respect to the rotational axis of the impeller to allow the impeller to rotate within the housing; a leakage flow path defined between the shroud and the housing leading from a leakage flow path inlet to a reinjection port, and a labyrinth seal arrangement provided in the leakage flow path. The labyrinth seal arrangement includes one or more shroud rings interdigitated with one or more housing rings so as to form a tortuous flow path for fluid flowing through the leakage flow path.

公开(公告)号：US20240229814A1

公开(公告)日：2024-07-11

申请号：US18290258

申请日：2022-05-06

Applicant: Dyson Technology Limited

Inventor： Raul CORRALEJO ANTON ,  Robert James KYLE ,  Christopher Ashley MONK

IPC: F04D29/08 ,  F04D29/28 ,  F04D29/42 ,  F04D29/44

CPC classification number: F04D29/083 ,  F04D29/281 ,  F04D29/4226 ,  F04D29/441

Abstract: A compressor is provided for use in domestic appliances. The compressor includes: an impeller including an inlet, an outlet, a hub defining a rotational axis of the impeller, a plurality of impeller blades that extend from the hub, and a shroud that at least partially surrounds the impeller blades; a housing that at least partially surrounds the shroud and that is coaxially arranged with respect to the rotational axis of the impeller to allow the impeller to rotate within the housing; a leakage flow path defined between the shroud and the housing leading from a leakage flow path inlet to a leakage flow path outlet; a labyrinth seal arrangement provided in the leakage flow path; and a flow straightening arrangement having an inlet at an outlet of the labyrinth seal arrangement.