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WO/2024/098736A1 |
The present application relates to the technical field of air conditioning. Provided are an oil return control method and apparatus for an air conditioner, and an air conditioner. The oil return control method for an air conditioner comp...
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WO/2024/102371A1 |
An energy efficient heat pump (102) for a heating, ventilation, and air conditioning (HVAC) system (100) includes a working fluid circuit (108) and a first conduit (202) of the working fluid circuit (108), where the first conduit (202) e...
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WO/2024/097924A1 |
A refrigeration system includes a receiver, a gas bypass valve, a medium temperature subsystem, a first valve system, a second valve system, and a controller. The medium temperature subsystem includes one or more expansion valves, one or...
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WO/2024/091965A1 |
Thermodynamic apparatuses embodied as compression-expansion heat pumps or heat engine systems are described. An example heat pump system includes a rotary compressor having a compression chamber, a rotary expander having an expansion cha...
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WO/2024/091616A1 |
A dual rail heat pump cycle includes a low-temperature heat source; a two stage, high-temperature heat exchange process through which, in operation, heat is exchanged with a thermal medium; and a working fluid circuit. The working fluid ...
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WO/2024/083478A1 |
The invention relates to a thermal compressor (100) comprising a lower sealed enclosure (1) filled with refrigerant in phase balance and an exchanger (4) allowing the flow of a hot medium in order to increase the temperature and the pres...
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WO/2024/083477A1 |
The invention relates to a heat engine (100) for the production of cold, comprising a closed circuit comprising a compression means, an expansion valve (7) and a first heat exchanger (8), wherein the compression means comprises a lower s...
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WO/2024/082771A1 |
An oil return control method and apparatus for variable refrigerant flow (VRF), and a VRF system. The oil return control method for VRF comprises: when a VRF system needs to enter an oil return operation, dividing, according to an operat...
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WO/2024/079052A1 |
What is described is a heat pump (100) comprising: an evaporator (10) for evaporating operating liquid to obtain operating vapour; a compressor (20) for compressing the operating vapour to obtain a compressed operating vapour; a condense...
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WO/2024/081241A1 |
A process liquid filter system for a heating, ventilation, air conditioning, and refrigeration (HVAC&R) system includes a plurality of process liquid filters arranged in parallel with one another relative to flow of process liquid throug...
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WO/2024/079295A1 |
The invention relates to a use of at least one temperature measurement point (8) in a compressor (2) to control a temperature of a refrigerant circuit, wherein the temperature measurement point (8) is used between power electronics (6) o...
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WO/2024/077250A1 |
Example implementations include a refrigeration system including a compressor having a rotor separating a low pressure side from a high pressure side, a sump having a first fluid connection to the low pressure side of the compressor and ...
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WO/2024/074729A1 |
A method for controlling the fill level of an oil separator (2) for a cooling circuit (K), comprising a controllable valve (5) connected downstream of an outlet of the oil separator (2), is intended to enable the lowest possible loss of ...
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WO/2024/070425A1 |
[Problem] To optimize heat exchange amounts of each heat exchanger in response to different temperature demands of a plurality of temperature regulation targets. [Solution] Provided is a refrigerant unit 10 comprising a refrigerant circu...
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WO/2024/070424A1 |
[Problem] To minimize the thermal impact that heat exchangers with different functions receive from each other, and make it possible to respond to the desired temperature demands for a temperature adjustment target. [Solution] Provided i...
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WO/2024/072876A2 |
A method includes identifying, by a processing device, a first indication of a speed of operation of a pressure exchanger of a heat transfer system. The method further includes determining, based on the first indication of the speed of o...
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WO/2024/070423A1 |
[Problem] To make it possible to reduce the flow-path length of a refrigerant flow path and improve the performance of a refrigerant circuit in a refrigerant unit in which constituent elements of the refrigerant circuit are formed as a u...
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WO/2024/057438A1 |
This compressor comprises: a compression mechanism for compressing a refrigerant; an electric motor for driving the compression mechanism; a rotary shaft connecting the compression mechanism and the electric motor, and transmitting the r...
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WO/2024/057921A1 |
[Problem] To ensure vibration tolerance of a compressor etc. as well as to reduce heat loss and refrigerant pressure loss in a refrigerant pipe. [Solution] Provided is a refrigerant unit 10 which comprises: a refrigerant circuit that inc...
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WO/2024/054918A1 |
A vapor compression system includes a primary loop and a secondary loop. The primary loop includes a dynamic compressor operable to compress a refrigerant, a condenser fluidly connected to the dynamic compressor, a first expansion device...
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WO/2024/054577A1 |
A heating, ventilation, air conditioning, and refrigeration (HVAC&R) system includes an evaporator disposed along a working fluid circuit, where the evaporator is configured to transfer heat between a working fluid and a conditioning flu...
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WO/2024/051099A1 |
A suspension centrifugal compressor, comprising a main shaft (1), an impeller device (2) fixedly mounted on the main shaft (1), and a radial gas bearing (5) and an axial gas bearing (6) which are sleeved on the main shaft (1), wherein th...
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WO/2024/046122A1 |
A compressor system and an operation method for a compressor system. The compressor system comprises a first compressor (10), a second compressor (20) and an oil balance pipe (50), wherein the first compressor (10) and the second compres...
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WO/2024/049593A1 |
This disclosure relates to a refrigerant compressor including a diffuser with one or more quarter wave tubes. The compressor is used in a heating, ventilation, and air conditioning (HVAC) chiller system, for example.
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WO/2024/042983A1 |
[Problem] To reduce heat loss that occurs between a flow path through which a high-pressure refrigerant flows and a flow path through which a low-pressure refrigerant flows, and to improve the system efficiency of a refrigerant circuit. ...
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WO/2024/044407A1 |
Compressor crankcase oil reclamation methods and systems include a coalescence filter coupled to a pressure relief vent of a compressor crankcase. The filter separates oil from an oil/gas mixture exiting the crankcase. A reservoir receiv...
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WO/2024/039434A1 |
A climate-control system may include first and second compressors and a suction manifold. The first compressor includes a first shell, a first compression mechanism, and a first suction inlet through which working fluid is drawn into the...
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WO/2024/037610A1 |
Provided in the present application is an evaporator assembly, comprising an evaporator and at least one oil cooler. The evaporator comprises an evaporator housing for accommodating a refrigerant. The oil cooler comprises an oil cooler h...
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WO/2024/024225A1 |
A compressor (CMP) is provided with: a compressor body casing (1); a compression mechanism unit (2) that is provided inside the compressor body casing (1); and an accumulator (10) that is provided outside the compressor body casing (1), ...
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WO/2024/017531A1 |
The invention relates to a compression refrigeration machine (10) comprising: a compressor (11) which is designed to compress vaporous working medium starting from an inlet pressure of the compressor (11) to an outlet pressure of the com...
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WO/2024/009578A1 |
A heat exchange system for a moving body according to the present invention comprises a heat pump device (100) and a condenser (200). The heat pump device (100) includes an electric compressor (1), a heat exchanger (9), and an evaporator...
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WO/2024/007676A1 |
Disclosed in the present disclosure are an oil return control method and device, and an air conditioner. The method comprises: at a current compressor operation frequency, adjusting an oil amount regulating component on an oil return pip...
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WO/2024/005869A1 |
An apparatus includes a semi-hermetic compressor housing, an electrically- powerable dual-cylinder rolling piston rotary compressor assembly housed in the housing, electric motor driver electronics, and an auxiliary housing. The auxiliar...
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WO/2024/002840A2 |
The invention relates to a system (2), in particular a large-scale refrigeration system, comprising a refrigeration circuit (8) and a connection for a further circuit (4) connected to the refrigeration circuit during operation, wherein: ...
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WO/2023/244819A1 |
A heating, ventilation, air conditioning, and/or refrigeration (HVAC&R) system (100) includes an economizer (103) configured to receive a heat transfer fluid (105) from a condenser (34). The economizer (103) is configured to separate the...
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WO/2023/237751A1 |
The invention relates to a method (200) for compressing a gas flow (101, 102, 103) containing propylene using an electric compressor drive (225), wherein: a first feed stream (101) is subjected to two separate compressions—a first comp...
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WO/2023/229950A1 |
A system includes a pressure exchanger (PX) configured to receive a first fluid via a first inlet and a second fluid via a second inlet. The PX is to exchange pressure between the first fluid and the second fluid and provide the first fl...
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WO/2023/229151A1 |
The present invention provides a refrigerator comprising: a cabinet having a machine compartment on the lower side; a compressor that is installed in the machine compartment and sags in one direction due to the weight thereof when the re...
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WO/2023/225930A1 |
In some aspects, the techniques described herein relate to a refrigerant compressor, including: a first cooling line configured to cool power electronics; a second cooling line configured to cool a motor of the compressor; a first valve ...
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WO/2023/223770A1 |
[Problem] To provide a composite device that contributes to downsizing of vehicular air-conditioning devices and the like and can also minimize occurrence of troubles due to a liquefied refrigerant during activation of a refrigerant comp...
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WO/2023/224972A1 |
A heating, ventilation, air conditioning, and refrigeration (HVAC&R) system (10) includes a compressor (32) having a housing (100), a shaft (102) disposed within and extending through the housing (100), and an impeller (104) coupled to t...
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WO/2023/210446A1 |
Provided is a refrigeration cycle device whereby it becomes possible to prevent the occurrence of a disproportionation reaction of a working medium. The refrigeration cycle device (1) is provided with a control device (3) for controlling...
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WO/2023/210444A1 |
Provided is a refrigeration cycle device which makes it possible to inhibit a working medium disproportionation reaction. This refrigeration cycle device is equipped with a control device (3) for controlling a compressor (4) equipped wit...
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WO/2023/199194A1 |
Active two-phase cooling systems incorporate a cooling medium that changes phase as it absorbs heat dissipated by a heat source and a pump or a compressor that urges the cooling medium through a cooling loop. Operation of some heat sourc...
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WO/2023/188883A1 |
A heat pump device according to the present invention comprises: an electric compressor (1); a condenser (9); and an evaporator (11). The electric compressor (1) has a housing (10), an inlet (16a), an outlet (16b), etc. In this heat pump...
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WO/2023/184768A1 |
A water chiller unit. The water chiller unit comprises: a casing (100); a compressor arranged in the casing (100), the casing (100) comprising a volute case (110) and a motor casing (120), and the motor casing (120) comprising a casing b...
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WO/2023/178870A1 |
An air conditioning system (100), comprising a compressor (10), a four-way valve (50), an outdoor heat exchanger (20), a throttling device (30), and an indoor heat exchanger (40), all of which are in communication with each other and for...
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WO/2023/178867A1 |
A compressor (10, 100) and an air conditioner (1000). The compressor (10, 100) comprises a body portion (11, 110) and a reservoir (13, 150), wherein the reservoir (13, 150) is arranged below the body portion (11, 110), an interlayer (12,...
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WO/2023/169709A1 |
The invention relates to a fluid circulation device comprising a casing (2) containing an electric machine (3), a cycle-gas circuit (5) subjecting the cycle gas to a change between a minimum pressure and a maximum pressure, a cycle-gas d...
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WO/2023/165795A1 |
A system (10) for steam generation and/or heat generation, having multiple compression stages (11), wherein each compression stage (11) includes a compressor (12) which is equipped to compress steam, starting from an inlet pressure of th...
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