Carrier Patente

A system (100) having: a power distribution system (500) with: a controller (510); a regenerative braking system (330); an electronic braking system, EBS, (520) that transmits first data (530) to the controller (510) indicative of an EBS status; an energy storage system, ESS, (310) that transmits second data (540) to the controller (510) indicative of an ESS status; a TRU (150), selectively powered by the ESS (310) and by the regenerative braking system (330), that transmits third data (550) to the controller (510) indicative of a TRU status; and a power release system, PRS, (650) that bleeds or stores power from the regenerative braking system (330); wherein the controller (510): renders a first determination that one or more of the first data (530) is indicative of an alert condition while the regenerative braking system (330) is generating power, that the second data (540) implies preventing the generated power from reaching the ESS (310), or the third data (550) implies preventing the generated power from reaching the TRU (150); and control the PRS (650), responsive to the first determination, to bleed or store the generated power.

This application provides a heat exchanger (100) for absorbing heat and evaporating a refrigerant in a refrigeration system (200), the heat exchanger (100) including: a heat exchanger shell (101) enclosed to form a heat exchanger cavity (1011); a heat exchange medium inlet (102) opened at one side of the heat exchanger shell (101); a heat exchange medium outlet (103) communicating with the heat exchange medium inlet (102) through a heat exchange tube bundle (104); a first refrigerant inlet (105) opened at a bottom of the heat exchanger shell (101) and communicating with the heat exchanger cavity (1011); a refrigerant outlet (106) opened at a top of the heat exchanger shell (101) and communicating with the heat exchanger cavity (1011); a second refrigerant inlet (107) disposed at a position farther from the heat exchange medium inlet (102) than the first refrigerant inlet (105); and a gas-liquid separator (108) connected to the first refrigerant inlet (105) and the second refrigerant inlet (107). By separating a liquid refrigerant and a gas refrigerant in a two-phase refrigerant using the gas-liquid separator (108), the liquid refrigerant and the gas refrigerant are redistributed, a heat exchange efficiency of the heat exchanger and the refrigeration system is improved, and a refrigerant charge amount is reduced.

A rotor (100) of a mixed flow fan is disclosed. The rotor (100) includes one or more blades (130) extending from a hub wall (110) to a shroud wall (150). The leading edge (132) of each blade (130) has one or more notches (135), each notch (135) being formed by a backward sweeping edge (136) and a forward sweeping edge (140) defined on the leading edge (132). The notches (135) are defined between a transition point (146) and a shroud wall junction (152) on the shroud wall (150), the transition point (146) being on or proximate to a point (144) on the leading edge (132) that is substantially normal to an axially projected trailing edge root junction (142) of a neighboring blade.

A cooling module (100) associable with a heat-generating electronic device (80) of a server (30) includes a casing (102) having a hollow interior (104) and at least one heat removal device (120) arranged within the hollow interior (104). A fluid flow path (124) of a primary cooling fluid (C1) extends through the casing (102) and the at least one heat removal device (120) defines a portion of the fluid flow path (124). The primary cooling fluid (C1) is configured to absorb heat from the heat-generating electronic device (80) within the cooling module (100).

A cooling device (100) associable with a heat-generating electronic device (50) of a server (30) includes a housing (120) having a fluid inlet (122) and a fluid outlet (124) and a divider (126) separating the interior of the housing into a first fluid compartment (128) and a second fluid compartment (130). Both the first fluid compartment (128) and the second fluid compartment (130) are fluidly connected to the fluid inlet (122). A heat transfer potential of the second fluid compartment (130) is less than the heat transfer potential of the first fluid compartment (128). At least one opening (140a, 140b) is formed in the divider (126) at a location downstream from the fluid inlet (122) and upstream from the fluid outlet (124). The first fluid compartment (128) is fluidly coupled to the second fluid compartment (130) at the at least one opening (140a, 140b).

A liquid desiccant (LD)-based dehumidification system (601) is provided for heating, ventilation, air conditioning and refrigeration (HVAC&R) systems. The LD-based dehumidification system (601) includes a tank (610) containing LD (611), a contact media device (620) including media (621) for disposition in a flow of air to be dehumidified and a sump (622) disposed below the media (621) to receive LD (611) drained from the media (621), a pump and valve system (630) to pump the LD (611) from the tank (610) to the contact media device (620) to wet the media (621) and from the sump (622) to the tank (610), a heat exchanger (640) through which LD (611), which is pumped from the sump (622) to the tank (610), flows, a sensing system (650) to sense one or more conditions of the LD (611) and a controller (780) to control the pump and valve system (630) in accordance with a system status and the one or more conditions of the LD (611).

A home energy management system (HEMS) includes a power supply configured to provide alternating current (AC) power, at least one load electrically connected to the power supply, and a modular multi-level (MMC) converter configured to receive power from the power supply and to supply a regulated converter output to the at least one load. The MMC includes one or more converter branches and a filter. The converter branch is in signal communication with the power supply and includes a plurality of bridge cells. Each bridge cell includes a plurality of power switches and a battery. The filter is electrically connected between the at least one load and the at least one converter branch. The filter is configured to reduce harmonic distortion and highfrequency noise in the converter output.

An (air-cooled) refrigerant system (102) is disclosed. The refrigerant system (102) includes a first enclosure (106) comprising a refrigerant circuit (104) configured to circulate a process fluid. At least a portion of the refrigerant circuit (104) is configured to flow the process fluid through a heat exchanger (108), the heat exchanger (108) being configured to dissipate heat from the process fluid passing through the heat exchanger (108). The refrigerant system (102) includes a second enclosure (114), where the second enclosure (114) comprises one or more electrical components configured to power and/or control the refrigerant circuit (104). The second enclosure (114) is fluidically sealed off from the first enclosure (106). Separating and fluidically sealing the first enclosure (106) and the second enclosure (114) prevents the process fluid from being exposed to the electrical components, thereby reducing risk of ignition of the process fluid.

A heat exchanger of a heating, ventilation and air conditioning (HVAC) system includes a plurality of heat exchange pathways extending across a heat exchanger body, and a heat exchanger inlet oriented such that a flow of refrigerant flows vertically upwardly through the heat exchanger inlet toward an inlet header configured to distribute a flow of refrigerant to the plurality of heat exchange pathways. A heat exchanger outlet is connected to the plurality of heat exchange pathways. The heat exchanger outlet is oriented such that the flow of refrigerant exiting the heat exchanger via the heat exchanger outlet flows vertically upwardly through the heat exchanger outlet.

An air conditioning system (1000) includes an inverter (1006) and a power factor correction circuit (1050) in signal communication with the inverter (1006). The inverter (1006) converts a DC voltage delivered from a DC voltage supply (1002) into an AC voltage. The power factor correction circuit (1050) delivers an AC line voltage across an AC voltage line (1052) based on the AC voltage and outputs an AC line voltage signal (1059) that is indicative of the AC line voltage. An inverter controller (1008) receives a feedback signal (1007) of the AC voltage from the inverter (1006) and receives the AC line voltage signal (1059) from the PFC circuit (1050). The inverter controller (1008) selectively operates in a first mode to control the inverter (1006) based on the AC line voltage signal (1059) and a second mode to control the inverter (1006) based on the feedback signal (1007) of the inverter output.

An air conditioning system (700) having: a controller (220); an energy storage device (240) including a battery pack (1010), wherein the energy storage device (240) is operable to power the air conditioning system (700); and an AC power bus (305) for connecting the air conditioning system (700) to an AC power grid (302) to selectively charge the battery pack; wherein the controller (220) is configured to: receive a request to charge or discharge the battery pack (1010) within a time window; determine whether the battery pack (1010) will remain within a predetermined operating temperature range while being charged or discharged within the time window, and responsive to a determination, either charging or discharging the battery pack (1010), pursuant to the request, or denying the request.

A compact heat exchanger assembly for a refrigeration system includes a heat rejection heat exchanger assembly (22) and a heat absorption heat exchanger assembly (24). The heat rejection heat exchanger assembly (22) includes a primary heat exchanger (50) and a secondary heat exchanger (52). The primary heat exchanger (50) has a tube bank (60, 62; 120, 122) extending between a first manifold (70; 130) and a second manifold (72; 132). The tube bank (60, 62; 120, 122) being provided with at least one bend (124) such that the primary heat exchanger (50) has a generally curvilinear shape. The secondary heat exchanger (52) is disposed between the first manifold (130) and the second manifold (132).

An energy storage device (ESD) (240A) system includes a battery module (310) that includes individual cases (320). Each of the individual cases includes a battery cell (326). The ESD system (240A) further includes an ESD pump (340) and a battery management system (BMS) (330). The ESD pump (340) is operable to flow immersion fluid into, through, and out of the battery module (310) and the individual cases (320). The BMS (330) is operable to make a determination that a status of the battery cell (326) is out-of-range, and, responsive to the determination that the status of the battery cell (326) is out-of-range, control operations of the ESD pump (340).

According to embodiments, an energy storage device, ESD, holder (310, 310A) includes a main body (310B), one or more ESD openings (310F) in the main body (310B), and one or more vacancy regions (310G) in the main body (310B). Each of the one or more vacancy regions (310G) is operable to hold a fluid. A first ESD opening of the one or more ESD openings (310G) is operable to prevent the fluid from contacting an ESD (320) within the first ESD opening.

An electronics enclosure system includes an enclosure (10), one or more electronics racks (12) positioned in the enclosure (10) and a cooling system to cool the one or more electronics racks (12). The cooling system includes a plurality of spray nozzles (22) positioned inside the enclosure (10) and configured to spray a cooling fluid onto the electronics rack (12) to cool the electronics rack (12). The plurality of spray nozzles (22) are operably connected to a vapor compression circuit (26) configured to cool the cooling fluid.A method of cooling an electronics rack (12) includes positioning one or more electronics racks (12) in an enclosure (10), operating a cooling system to spray a cooling fluid onto the electronics rack (12) from a plurality of spray nozzles (22) positioned inside the enclosure (10) to cool the electronics rack (12), and cooling the cooling fluid via a vapor compression circuit (26) operably connected to the plurality of spray nozzles (22).

A heating system (130) having a first heating appliance (132) powered by electricity provided via: a transmission line (160) from an electric power grid (150) that provides electricity to a plurality of buildings including the building (130); a second heating appliance (134) powered via a fuel; and a controller (131) operationally coupled to the first heating appliance (132) and the second heating appliance (134), and configured to receive control signals over a telecommunications network (240), wherein the control signals are associated with reducing consumption of electricity via the electric power grid (150), wherein, responsive to receiving the control signals, the controller (131) is configured to switch between powering the first heating appliance (132) via the electric power grid (150) and the second heating appliance (134) with the fuel.

A system (100), having: a cargo box (120) defining an interior cargo space (122); a TRU (150) at the front end (130) of the cargo box (120), and includes a cooling system (155) to maintain the interior cargo space (122) at a set temperature, the TRU (150) consumes of at least one type of energy source (158) to run the cooling system (155); and a controller (160) for selectively cooling the interior cargo space (122) by switching a run mode of the cooling system (155) between a start-stop mode and a continuous-run mode, depending on a consumption of energy from an energy source (158) by the TRU (150), the controller (160) determines the consumption from at least one factor, including: an atmospheric condition; a time of day; a geographic location of the cargo box (120); the set temperature for the interior cargo space; a type of goods; or a type of energy source.

A system for conditioning air, the system having: a controller; an energy storage system (ESS) that is a battery, wherein the ESS is operable to power the system; and an AC power bus for connecting the system to an AC power grid to selectively charge the ESS; wherein the controller is configured to: request, from the ESS, health state data of the ESS; determine a health state of the ESS from the health state data; and request a replacement ESS responsive to the health state of the ESS.

A cooling system (100) includes a heat removal device (102) operable to cool a stacked microchip assembly (64). The heat removal device (102) includes a structure (104) having a first end (106), a second end (108), at least one sidewall (110) extending between and connecting the first end (106) and the second end (108), and a hollow interior. The stacked microchip assembly (64) is positionable within the hollow interior. An inlet cavity (112) and an outlet cavity (114) are arranged within the hollow interior and are fluidly connectable to at least one passageway (66) formed in the stacked microchip assembly (64). An inlet opening (116) is formed in the structure (102) and is fluidly connected with the inlet cavity (112). An outlet opening (118) formed in the structure (102) is fluidly connected with the outlet cavity (114). A first cooling fluid (C1) is movable from the inlet cavity (112) to the outlet cavity (114) through the at least one passageway (66) formed in the stacked microchip assembly (64).

A transportation refrigeration system (100), having: a cargo box (120) extending from a front end (130) to an aft end (140); a transportation refrigeration unit (TRU) (150) at the front end of the cargo box; wherein the TRU includes: a controller (160); a flow motivator (170); an evaporator coil (185); a first temperature sensor (305A) mounted near the evaporator coil; and a second temperature sensor (305B) mounted within the cargo box; wherein the controller is configured to cycle the flow motivator between an on-phase when a cargo box temperature is at or above an upper setpoint and an off-phase when the cargo box temperature is at a lower setpoint; and wherein following a defrost event that defrosts the evaporator coil, the controller is configured to monitor the second temperature sensor for determining when to transition between the on-phase and the off-phase, until a stable condition of the first sensor is determined.

This application provides a heat exchanger (1) capable of recovering lubricating oil according to liquid level changes using the heat exchanger (1) as an evaporator.The heat exchanger (1) includes a heat exchanger shell (101), a refrigerant inlet (102), a refrigerant outlet (103), a heat exchange tube bundle (104), a first lubricating oil return port (105) opened on a side surface of the heat exchanger shell (101), and a second lubricating oil return port (106) opened on the side surface of the heat exchanger shell (101) and closer to the top of the heat exchanger shell (101) than the first lubricating oil return port (105).By arranging the first lubricating oil return port (105) and the second lubricating oil return port (106) at different positions in a height direction of the heat exchanger shell (101), when the working condition of the heat exchanger (101) changes, the lubricating oil return port (105,106) matched with a liquid level in a heat exchanger shell cavity (101a) is switched, thereby avoiding the problem that an operation of a compressor is affected due to no oil recovery that may occur when the liquid level in the heat exchanger shell (101) fluctuates excessively due to only using one fixed lubricating oil return port.

Disclosed herein is a thermal energy storage, TES, system (100). The TES (100) includes two or more energy storage blocks (105) comprising a phase-change material, the energy storage blocks (105) being arranged ordinally with respect to a corresponding nominal phase change temperature of the energy storage blocks (105), and two or more fluid lines (110, 120) routed through the one or more energy storage blocks (105). A first fluid line (110) and a second fluid line (120) from the two or more fluid lines (110,120) are configured to circulate corresponding fluids in opposite directions with respect to the one or more energy storage blocks (105). The ordinal arrangement provides increased efficiency for heat storage and/or transfer, as a fluid circulated through the first fluid line (110) incrementally/decrementally rejects heat to the energy storage blocks (105).

An energy system (100) having: a heating, ventilation and/or air conditioning (HVAC) system (110) that includes an HVAC branch loop (250) with an HVAC conditioning flow (175) that flows in one direction or bidirectionally; a battery energy storage system (ESS) (120) that includes a battery pack (190), having batteries (200), configured for an operating temperature within a target temperature range, an ESS conditioning loop (210) with an ESS conditioning flow (220), wherein the ESS conditioning loop (210) is thermally coupled to the battery pack (190), and the HVAC branch loop (250) and the ESS conditioning loop (210) are fluidly isolated from each other; a heat exchanger (255), wherein the HVAC branch loop (250) and the ESS conditioning loop (210) are thermally coupled to each other via the heat exchanger (255); and a controller (280) configured to control flow within the HVAC branch loop (250) and the ESS conditioning loop (210) such that the battery pack (190) operates within the target temperature range.

This application provides an air purification component (100) and an air conditioning device (300). The air purification component (100) includes: an outer housing (1) that is cylindrical and rotatably arranged in an air duct (301); an opening (2) provided on a cylindrical surface of the outer housing (1); an inner housing (3) extending in an axial direction of the outer housing (1) and built into the outer housing (1); an opening (4) provided on a cylindrical surface of the inner housing (3); an ionizer fixing portion (5) disposed on an inner surface of the inner housing (3); and an ionizer (6) fixed to the ionizer fixing portion (5). During operation, the ionizer (6) adsorbs dust particles in the air. In a case where the outer housing (1) pivots around a central axis thereof under the drive of wind, a surface of a carbon fiber brush is periodically wiped when the ionizer (6) transitions from the outer housing opening (2) to the inner surface of the outer housing (1), thereby cleaning the dust particles accumulated on a surface of the ionizer (6). The device according to the embodiment of this application can be driven by wind to ensure a self-cleaning function with zero energy consumption of the ionizer (6).

A method (400) of automating a pressure decay integrity test of a container (10) configured for refrigeration by a transportation refrigeration unit (TRU) is provided. The method (400) includes connecting a controller (70) programmed with an automated pressure decay integrity test of the container (10) to a compressor (26) of the TRU and a pressure transducer (501) installed in the container (10) and executing (406) the automated pressure decay integrity test by the controller (70). The executing (406) includes activating (4061) the compressor (26) to pressurize the container (10), receiving (4062) readings of the pressure transducer (501) and determining (4063), from the readings, whether the automated pressure decay integrity test is passed.

This application provides a bearing device (1), and a motor (2) and a compressor (3) including the bearing device (1). The bearing device (1) includes a rotating shaft (101), a first bearing (102) and a second bearing (103) disposed around the rotating shaft (101) and parallel to each other, a thrust disc (104) sleeved on and fixed to the rotating shaft (101), and a sensor disc (105) disposed around the rotating shaft (101) and parallel to the thrust disc (104). A first displacement sensor (106) including a first sensor probe (1051) and a second displacement sensor (107) including a second sensor probe (1052) are symmetrically disposed on the sensor disc (105). By connecting the first displacement sensor (106), the second displacement sensor (107), and an excitation source module (108, 109, 110) in parallel or in series, detection results of the first sensor probe (1051) and the second sensor probe (1052) are combined to obtain a degree of deviation of the rotating shaft (101), which avoids an error in the parallelism that may occur when one displacement sensor or one sensor probe is used alone.

A cooling system (20) includes a refrigeration circuit (22) and a coolant circuit (40) for cooling a working fluid to meet a cooling demand. The coolant circuit (40) is thermally coupled to the refrigeration circuit (22). A free cooling circuit (50) is in selective thermal communication with the refrigeration circuit (22) and is in selective thermal communication with the coolant circuit (40).

A screw compressor (1), comprising: a compressor housing (101) provided with a compression chamber inside; an economizer (202) communicating with the compressor housing (101) through an economizer pipeline (103); and a first muffler reaction chamber (102) disposed in the compressor housing (101) and having an economizer compression chamber port (1021) communicating with the compression chamber, wherein the economizer pipeline (103) has one end communicating with the first muffler reaction chamber (102) and the other end communicating with the economizer (202), and the screw compressor (1) further comprises a second muffler reaction chamber (104) communicating with the economizer pipeline (103), and surrounding and protruding from an outer wall of the economizer pipeline (103).

This application relates to a magnetic suspension bearing control system, a control method and refrigeration equipment (1). The magnetic suspension bearing control system includes: a magnetic suspension bearing control module (100) configured to control a magnetic suspension bearing; a battery management module (200) electrically connected to the magnetic suspension bearing control module (100); and a master control module (300) connected to the magnetic suspension bearing control module (100) and the battery management module (200), and configured to control the battery management module (200) to store electric energy when a voltage of the magnetic suspension bearing control module (100) is excessive, and supply power to the magnetic suspension bearing control module (100) when the magnetic suspension bearing control module (100) is underpowered. The technical solution of the magnetic suspension bearing control system enhances the stability, energy efficiency and response speed of the system through the coordinated operation of the battery management module (200) and the master control module (300), and effectively prolongs the service life of the equipment and reduces the maintenance cost. This integrated solution provides a safer, more reliable and economical operating environment for high-performance and high-precision mechanical equipment.

A heating, ventilation and air-conditioning (HVAC) system (1001) is provided. The HVAC system (1001) includes a first HVAC unit (1010), a second HVAC unit (1020) including a battery (1021), a panel (1030) receptive of grid power and a switch element (1060). The switch element (1060) is separate from the panel (1030) and configured to assume a first state in which electricity is transmissible from the panel (1030) to the first and second HVAC units (1010, 1020) when the grid power is available and a second state in which electricity is transmissible from the battery (1021) to the first HVAC unit (1010) when the grid power is unavailable.

A cooling distribution unit (60) associated with at least one rack system (52) of a data center (50) includes a first cooling system (30) having a primary cooling circuit (31) through which a heat transfer fluid (R) is configured to circulate, a heat exchanger (38), a cooling system load (34, 40) arranged downstream from the heat exchanger (38) relative to a flow of the heat transfer fluid (R), and at least one valve (36). A second cooling system (32) having a secondary cooling circuit (33) through which a coolant (C) is configured to circulate includes a pump (68). The second cooling system (32) is thermally coupled to the first cooling system (30) at the heat exchanger (38). The heat transfer fluid (R) provided to the cooling system load (34, 40) has a first constant temperature as a load at the heat exchanger (38) varies.

A cooling distribution unit associated with at least one rack system of a data center includes a first cooling system having a primary cooling circuit through which a heat transfer fluid is configured to circulate and including a heat exchanger. A second cooling system has a secondary cooling circuit through which a coolant is configured to circulate and includes a pump. The second cooling system is thermally coupled to the first cooling system at the heat exchanger. A pressure at the pump remains constant as a load at the first heat exchanger varies.

A transportation refrigeration system (101) is provided and includes a trailer refrigeration unit (TRU) (110), a battery (120) to provide electricity for the TRU (110), an electrical system (140) and a controller (160). The electrical system (140) includes a direct current (DC) bus (141) electrically interposed between the battery (120) and the TRU (110). The electrical system (140) further includes an inverter (142) and a boost converter (143) disposed on the DC bus (141). The controller (160) includes a memory unit (202) storing first, second and third efficiency tables (181, 182, 183) for the TRU (110), the inverter (142) and the boost converter (143), respectively, and a processor (201. The processor (201) sets an operational target for the TRU (110) and achieves the operational target by controlling the inverter (142) and the boost converter (143) according to a voltage of the battery (120), the first, second and third efficiency tables (181, 182, 183) and real-time operating conditions.

A vapor compression system (20) includes a compressor (22), a condenser (24), an expansion device (26), and an evaporator (28) fluidly connected to form a closed fluid loop having a working fluid circulating therethrough. A thermal storage device (40) includes a storage material and the thermal storage device (40) is thermally coupled to the closed fluid loop downstream from the expansion device (26) relative to a flow of the working fluid. The vapor compression system (20) is controllable such that the thermal storage device (40) is operable to both store heat and release heat as the working fluid circulates through the closed fluid loop in a given direction.

A method of allocating power sources in an air conditioning system (100) includes determining (902) a load demand of the air conditioning system; determining (904) whether a demand response, DR, event or a time-of-use, ToU, high rate is occurring; in response to the DR event or ToU high rate not occurring, charging (906) an energy storage device (240) to an upper voltage, the charging performed at a predefined charging power level during a predefined charging period; in response to the DR event or ToU high rate occurring, determining (908) an allocation of power sources to satisfy the load demand and discharging the energy storage device (240) at a predefined discharging power level and a predefined discharging time period until the energy storage device (240) reaches a lower voltage level or the DR event or ToU high rate is finished.

A heating system (30) of a cargo compartment (16) includes an internal combustion engine (34), and an exhaust pathway (44) operably connected to the internal combustion engine (34) and structured to direct exhaust gas of the internal combustion engine (34) away from the internal combustion engine (34). An air intake pathway (54) is operably connected to the internal combustion engine (34) and is structured to direct an intake airflow into the internal combustion engine (34). The air intake pathway is at least partially surrounding the exhaust pathway (44) along at least a portion of a length of the air intake pathway (54) thereby heating the intake airflow via thermal energy exchange with the exhaust gas while also preventing mixing of the intake air and the exhaust gas streams.

Described herein is a mixed-flow fan assembly (100). The assembly comprises an impeller (100A) comprising a plurality of blades (102) extending from a rotatable hub (104) , and a shroud (106) extending circumferentially around the impeller (100A), wherein the shroud (106) is secured to the plurality of blades (102), a casing (110) with a bellmouth (112) disposed circumferentially around the shroud (106), defining a cavity (C) between the casing (110) and the shroud (106), with flow control clearance gaps at a downstream end and an upstream end of the casing. The assembly (100) further comprises one or more first circular ribs (118) extending axially from the shroud (106) within the cavity (C) and substantially parallel to a rotational axis of the impeller (100A), and a plurality of de-swirl vanes (116) configured at predefined positions on an inner surface of the bellmouth (112).

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