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.

公开(公告)号：US20250155902A1

公开(公告)日：2025-05-15

申请号：US18505565

申请日：2023-11-09

Applicant: Danfoss A/S

Inventor： Mark Eric Miller ,  Wayne Edgar Alphonso

IPC: G05D7/06 ,  F24D19/10

Abstract: A gas sensing leak mitigation unit for a gas system includes a gas sensing element, at least one onboard relay, and at least one microcontroller. The at least one microcontroller is configured to receive a signal from the gas sensing element and to determine if the signal from the gas sensing element is above a first predetermined threshold level. The at least one microcontroller is further configured to control the energizing and de-energizing of the onboard relays. A first onboard relay may be configured, when energized, to transmit power to a compressor of the gas system and, when de-energized, to break power to the compressor. A second onboard relay may be configured, when de-energized, to transmit power to a fan control. The gas sensing element, the at least one onboard relay and the at least one microcontroller may all be arranged within a common housing.

公开(公告)号：US20230400217A1

公开(公告)日：2023-12-14

申请号：US17836024

申请日：2022-06-09

Applicant: Danfoss A/S

Inventor： Wayne Edgar Alphonso

IPC: F24F11/89 ,  F24F11/36

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.

公开(公告)号：US20240175731A1

公开(公告)日：2024-05-30

申请号：US18515644

申请日：2023-11-21

Applicant: Danfoss A/S

Inventor： Wayne Edgar Alphonso

IPC: G01D11/24 ,  F24F11/36

CPC classification number: G01D11/245 ,  F24F11/36

Abstract: An enclosure for a refrigerant gas leak sensor for a heating, ventilation and air conditioning system includes a bottom part (12) for mounting the enclosure (10) on a mounting surface and a top part (14) being attached to the bottom part (12). The bottom part (12) and the top part (14) enclose a chamber (16) for receiving a printed circuit board having a sensing element of the refrigerant gas leak sensor. The bottom part (12) has a channel (18) for connecting to the sensing element and is in fluid communication with ambient air, wherein the enclosure (10) has an exterior sidewall (20) extending in a circular manner around the chamber (16) and the channel (18) and extending between the bottom part (12) and the top part (14).