Carrier Corporation Company

Westborough, MA, United States

Carrier Corporation Company

Westborough, MA, United States
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Patent
Carrier Corporation | Date: 2016-11-18

A system and method of determining duct leakage in an HVAC system including an HVAC unit assembly operably coupled to a system controller, the method including operating the system controller to determine system leakage data, operating the system controller to determine supply leakage data, and operating the system controller to determine a duct leakage measurement based in part on the system leakage data and the supply leakage data.


Patent
Carrier Corporation | Date: 2017-04-05

A compressor (22) comprises a housing (50) having a first port (26) and a second port (28). A male rotor (52) has a working portion (64) having a plurality of lobes (110) of a count (NM) and at least a first shaft portion (62) protruding beyond a first end (68) of the male rotor working portion and mounted for rotation about a first axis (500). A female rotor (54) has a working portion (66) having a plurality of lobes (112) of a count (NF) and mounted for rotation about a second axis (502) so as to be enmeshed with the male rotor working portion. An electric motor (56) is within the housing and has a stator (58) and a rotor (60) mounted to the first shaft portion. The compressor has no additional compressor rotors. The lobe count of the male rotor is less than the lobe count of the female rotor. A combined lobe count (NM + NF) is at least fifteen.


Patent
Carrier Corporation | Date: 2017-01-25

An evaporator heat exchanger includes a first tube bank having an inlet manifold and a plurality of first heat exchanger tubes arranged in a spaced, parallel relationship. A second tube bank includes an outlet manifold and a plurality of second heat exchanger tubes arranged in a spaced, parallel relationship. An intermediate manifold fluidly coupled the first tube bank and the second tube bank. A distributor insert arranged within the inlet manifold includes a first dividing element configured to define a plurality of first refrigerant chambers therein. A second dividing element is arranged within the intermediate manifold and is configured to define a plurality of second refrigerant chamber therein. Each second dividing element is arranged at a position substantially identical to a corresponding first dividing element. Each second refrigerant chamber is fluidly coupled to the same portion of the first heat exchanger tubes and a corresponding first refrigerant chamber.


Patent
Carrier Corporation | Date: 2017-01-11

A sensor assembly for detecting open or closed state in windows and doors includes a passive infrared sensor configured to produce a change in an electrical signal based on a change in infrared radiation incident on the passive infrared sensor. A lens is operatively connected to the passive infrared sensor. At least a portion of the lens is configured to be mounted in an interface between a frame and a door or window mounted to open and close within the frame. The lens is configured to guide ambient infrared radiation to the passive infrared sensor at a first level when the door or window is closed and at a second level when the door or window is open or ajar.


Patent
Carrier Corporation | Date: 2016-12-28

A vapor compression system comprising a centrifugal compressor (22) having: an inlet (24); an outlet (26); a first impeller stage (28); a second impeller stage (30); and a motor (34) coupled to the first impeller stage and second impeller stage. A first heat exchanger (38) is downstream of the outlet along a refrigerant flowpath. An expansion device (56) and a second heat exchanger (64) are upstream of the inlet along the refrigerant flowpath. A bypass flowpath (120; 320) is positioned to deliver refrigerant from the compressor bypassing the first heat exchanger. A valve (128) is positioned to control flow through the bypass flowpath, wherein: the bypass flowpath extends from a first location (140) intermediate the inlet and outlet to a second location (142; 342) downstream of the first heat exchanger along the refrigerant flowpath.


Patent
Carrier Corporation | Date: 2017-03-29

In one aspect, a return air bulkhead (50) for a temperature controlled container (10) is provided. The bulkhead (50) includes a lower section (52) configured to couple to the container (10) and an upper section (54) separate from the lower section (52). The upper section (54) is configured to be adjustably coupled to the lower section (52) at varying heights relative to the lower section (52) such that a total height of the return air bulkhead (50) is adjustable.


Patent
Carrier Corporation | Date: 2017-01-25

Embodiments are directed to an installation of a first tube made of a first material on a heat exchanger that is different from a second material associated with a second tube of the heat exchanger. The first tube is coupled to the second tube via a porous layer associated with the first tube. A signal is measured between the first tube and the second tube. The measured signal is logged as data. Information associated with a corrosiveness of an environment in which the heat exchanger is located is obtained based on the data.


Patent
Carrier Corporation and Hellmann | Date: 2017-02-01

A device (3) for determining the filling height of liquid in a container (2), particularly for determining the filling height of liquid refrigerant (14) in a refrigerant collecting container (2) of a refrigerant circuit (30), the device (3) comprising a plurality of temperature sensors (4a, 4b) arranged in one extension at different positions; and at least one heating device (6) configured for heating the temperature sensors (4a, 4b). The plurality of temperature sensors (4a, 4b) and the at least one heating device (6) are configured to be positioned along a vertical extension of the container (2). The device (3) for determining the filling height of liquid in a container (2) further comprises an analysing unit (20) connected to the temperature sensors (4a, 4b) for receiving output signals from the temperature sensors (4a, 4b), and configured to determine the filling height of refrigerant within in the container (2) based on the output signals received from the temperature sensors (4a, 4b).


Patent
Carrier Corporation | Date: 2017-01-04

A magnetic strip card (12) includes a partial encrypted card payload encrypted with a long term shared key (LK) to provide a final encrypted payload. A method for encoding the magnetic strip card includes encrypting a card payload, the card payload comprising a code key (32a; 32b) of an access control (16; 16a; 16b) with a short key (SKI; SK2) of the access control to generate a partial encrypted payload and encrypting the partial encrypted payload with a long term shared key (LK) to provide a final encrypted payload.


Patent
Carrier Corporation | Date: 2017-01-04

A security sensor (12) including a processor (34), communication module, antenna (38), and tamper detection circuit (40), wherein the sensor is configured to detect tampering based at least in part on a difference between an electrical characteristic of a first signal and the electrical characteristic of a second signal.

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