148results about "Refrigerants" patented technology

A heat source apparatus (1) includes: a cylinder (71) storing a flammable refrigerant and having, in a lower portion, a discharge port (71a) through which the flammable refrigerant is discharged; a casing (21) having a bottom plate (23) on which a compressor (12) and the cylinder are installed; and a restriction portion (80) configured to restrict a direction of displacement of the compressor when the heat source apparatus falls. In a top view with the heat source apparatus installed, a first straight line (L1) is defined as a straight line passing through a center of gravity (C1) of the compressor and a center of gravity (C2) of the cylinder. The restriction portion is configured to restrict the displacement of the compressor toward the cylinder to a direction deviating from the first straight line under a condition in which the first straight line is aligned with a direction of gravity.

The invention relates to the technical field of medium recovery, and discloses a heat-conducting medium recovery system and a control method thereof. The recovery system comprises a negative pressure recovery loop, and in the negative pressure recovery loop, the input end of a first branch is connected with one end of target equipment, and the output end of the first branch is connected with a first gas-liquid separator; the input end of the second branch is connected with the top of the first gas-liquid separator, and a vacuum pump is arranged on the second branch; the upstream of the third branch is in heat exchange connection with the refrigerating loop, and the downstream of the third branch is provided with a second gas-liquid separator; the input end of the fourth branch is connected with the top of the second gas-liquid separator, a heater is arranged on the fourth branch, and the output end of the fourth branch is connected with the other end of the target equipment. According to the heat-conducting medium recovery system and the control method thereof, through closed negative pressure circulation, the loss of the heat-conducting medium in the recovery process can be reduced, and the pressure bearing risk of target equipment parts can be reduced.

Provided is a method for treating a working fluid that improves the amount of an odorant to be separated. The method for treating the working fluid includes a step of preparing the working fluid (S1c), and a step of separating the odorant from refrigerant (S2c). The working fluid contains the refrigerant, a refrigerating machine oil, and the odorant. A boiling point Tb1 of the odorant is higher than a boiling point Tb2 of the refrigerant. In the step of separating (S1c), a temperature of the working fluid is maintained above the boiling point Tb1 of the refrigerant and below the boiling point Tb2 of the odorant.

The application provides a refrigerant recovery system and a control method thereof. The refrigerant recovery system comprises a to-be-recovered air conditioner, a liquid storage tank, a first heat exchanger, a second heat exchanger, a radiator, refrigerant pipelines and a coolant pipeline. The to-be-recovered air conditioner, the first heat exchanger and the liquid storage tank are arranged on the refrigerant pipelines, and the second heat exchanger and the radiator are arranged on the coolant pipeline. The first heat exchanger is connected with or arranged close to the second heat exchanger to cool the refrigerant in the first heat exchanger. The coolant after heat exchange in the second heat exchanger can enter the radiator. The radiator is arranged close to the to-be-recovered air conditioner to heat the refrigerant in the to-be-recovered air conditioner. According to the application, the pressure of the refrigerant entering the liquid storage tank can be reduced, that is, the pressure of the high-pressure part (exhaust) of the compressor can be effectively reduced. Meanwhile, the temperature and pressure of the refrigerant in the to-be-recovered air conditioner are improved, so that the high-low pressure ratio of the compressor is effectively reduced, and the recovery efficiency of the refrigerant is improved.

The purpose is to reduce the impact the cylinder receives from the compressor in the event that the casing falls. [Solution] The heat source device comprises a compressor (12) included in a refrigerant circuit (11) that performs a refrigeration cycle, a cylinder (71) that stores flammable refrigerant for filling the refrigerant circuit (11) and has an outlet (711) at its bottom for discharging the flammable refrigerant, a casing (21) having a bottom plate (23) on which the compressor (12) and the cylinder (71) are installed, and a plate member (81) disposed between the compressor (12) and the cylinder (71).

A device for recovery of refrigerant from a sealed heat transfer system includes a refrigerant conduit formed in the device for guiding a flow of refrigerant from the heat transfer system to a refrigerant outlet of the device, a refrigerant inlet to the refrigerant conduit. The refrigerant inlet can be provided in a surface of the device. The device can include a tool for providing an opening between an opening area of a part of the heat transfer system and the refrigerant inlet, a driver to drive a movement of the tool in order to provide the opening in the opening area. The device further includes a first gas conduit formed in the device for guiding a flow of gas between a first internal gas opening being provided in a surface of the device and a first external gas opening of the device.

The invention discloses an air conditioner outdoor unit, a refrigerant filling method and device and a storage medium. The air conditioner outdoor unit comprises a compressor, a one-way valve, a heat exchanger and a first stop valve, an output port of the compressor is connected with the heat exchanger through the one-way valve, an input port of the compressor is connected with the first stop valve, and a pipeline between the one-way valve and the heat exchanger is a first pipeline. The pipeline between the compressor and the first stop valve is a second pipeline, and refrigerants are arranged in the first pipeline, the second pipeline and the compressor. Under the condition of the same refrigerant injection amount, the air conditioner outdoor unit can store refrigerants in the first pipeline, the second pipeline and the compressor separately, so that in the process of transporting the air conditioner outdoor unit, the pressure generated when the refrigerants in the air conditioner outdoor unit are subjected to high temperature is lower than the pressure bearing capacity of the refrigerant pipeline; and pipe explosion can be reduced to a certain extent, and damage to the outdoor unit of the air conditioner is avoided.

A heat source unit (2) includes a refrigerant circuit (20), a refrigerant container (44), a connecting portion (43), a connection pipe (42), and a casing (41). The refrigerant circuit (20) includes a compressor (21) and a heat exchanger (23). The refrigerant container (44) is connected to the refrigerant circuit (20). The refrigerant container (44) is filled with a flammable refrigerant. The connecting portion (43) is connected to the refrigerant container (44). The connection pipe (42) connects the connecting portion (43) to the refrigerant circuit (20). The casing (41) accommodates the compressor (21), the first heat exchanger (23), the refrigerant container (44), the connecting portion (43), and the connection pipe (42). The refrigerant container (44) is supported by a bottom plate (413) of the casing (41).

A method of installing a split HVAC system includes purging and sealing new refrigerant lines using a pressurized, refrigerant-compatible fluid. A condenser having a service port and an evaporator are provided with at least two tubes configured to form a refrigerant circuit. A first tube is coupled between the condenser and the evaporator. A second tube is coupled to the evaporator while its condenser-side end remains unattached. A fluid container with a valve and a service-port fitting is connected to the condenser service port and opened to drive the pressurized fluid through the tubes. Purging is confirmed by fluid discharge from the unattached end of the second tube, after which that end is connected to the condenser, optionally while discharge continues to maintain positive pressure for leak checking. The container may be partially removed while leaving the fitting attached so residual fluid vents through the service port before final disconnection.

Provided are a device and a method for achieving homogenization when filling a subdivision container during manufacturing of a mixed refrigerant device, homogenization of composition when filling a mixed refrigerant in a heat pump cycle, and homogenization of composition of the mixed refrigerant during operation of the heat pump cycle. The device is provided with: a raw material container for storing a mixed refrigerant in a state in which the mixed refrigerant is separated into a liquid phase and a gas phase; the gas-liquid mixing device is used for uniformly mixing the liquid phase and the gas phase; a pump which respectively measures and introduces a liquid phase and a gas phase of the mixed refrigerant from the raw material container and transfers the liquid phase and the gas phase to the gas-liquid mixing device; and a pump for metering the mixed refrigerant in the gas-liquid mixing device and transferring the mixed refrigerant to the subdivision container after the gas-liquid mixing device is operated for a predetermined time. In the present invention, a mixed refrigerant container is provided in the middle of the piping of a heat pump cycle to fill a refrigerant, and the refrigerant can be circulated in the mixed refrigerant container even when the heat pump is operated after the completion of the filling. In addition, the mixed refrigerant container has a gas-liquid mixing function.

Provided is a method for discharging refrigerant that improves the amount of an odorant to be separated. The method for discharging the refrigerant includes a step of discharging the refrigerant containing an odorant from a refrigeration cycle apparatus (S1a), and a step of separating the odorant from the refrigerant (S2a) after the step of discharging (S1a). A boiling point Tb2 of the odorant is higher than a boiling point Tb1 of the refrigerant. In the step of discharging (S1a), the refrigerant is discharged together with a refrigerating machine oil. In the step of separating (S2a), the refrigerant containing the odorant is cooled to a temperature Tc between the boiling point Tb2 of the odorant and the boiling point Tb1 of the refrigerant. The temperature Tc is above a melting point Tm2 of the odorant.

Methods for forming an improved, centralized refrigeration systems by: (a) providing an existing refrigeration circuit with an existing high GWP refrigerant; (b) disconnecting the fluid connection between the existing refrigerant liquid from the condenser and the evaporators; (c) disconnecting the fluid connection between the existing refrigerant vapor from the evaporators and the compressor suction; (d) establishing a new first refrigeration circuit comprising the compressor and the condenser; (e) establishing a new second refrigeration circuit comprising the evaporators by removing existing refrigerant from the evaporators and the disconnected conduits and replacing the removed refrigerant with a second refrigerant comprising at least 50% of R1234ze(E) and being Class Al and having an OEL greater than 400 and a GWP of about 150 or less; and thermally interconnecting the new first refrigeration circuit and the new second refrigeration circuit with an inter-circuit heat exchanger.

To provide a quick and convenient way to convey lubricants into an A / C system without the use of a manual injector.SOLUTION: Compositions, systems, and methods for introducing lubricants and additives designed to work with environmentally friendly refrigerants into vehicle heat management systems including passenger compartment air-conditioning (A / C) systems are disclosed. Methods for loading lubricants and specific additives using environmentally desirable (low GWP) refrigerant or refrigerant blend compositions into an environmentally friendly system, such as a system that uses HFO-1234yf, are also disclosed.SELECTED DRAWING: Figure 1

A process of thermal management fluid reclamation is provided. The process includes collecting at least one recovered thermal management fluid including at least a first refrigerant compound and a second refrigerant compound to form a collected thermal management fluid; and forming a blend constituent from the collected thermal management fluid in the absence of distillation or substantially in the absence of distillation. The blend constituent is azeotropic, azeotrope-like, or close-boiling. The blend constituent is configured to be combined with (i) one or more refrigerant compounds, and / or (ii) one or more blends comprising two or more refrigerant compounds, for formation of a thermal management fluid product.

Carbon dioxide air conditioning system comprising a cooling device (2) with a refrigerant circuit (3), wherein carbon dioxide (K) is incorporated as a refrigerant in the refrigerant circuit (3) and wherein the refrigerant circuit (3) comprises means for evaporating and condensing the carbon dioxide (K).

A transport refrigeration system includes a compressor, a heat rejection heat exchanger, a flash tank, an expansion device and a heat absorption heat exchanger arranged in a serial refrigerant flow order to circulate a refrigerant; a controller configured to: determine a presence of at least one condition of the transport refrigeration system; and initiate a low refrigerant charge detection process in response to detecting the presence of the at least one condition of the transport refrigeration system.

The invention relates to the technical field of liquid cooling, and discloses an integrated system for refrigerant filling of a liquid cooling unit and a control method thereof.The integrated system comprises a control module, a vacuumizing module, a helium filling module, a helium recycling module, a refrigerant filling module and a mechanical arm module, and an integrated system refrigerant pipeline is arranged in the mechanical arm module; the vacuumizing module is used for vacuumizing a refrigerant pipeline of the liquid cooling unit based on the control instruction; the helium filling module is used for filling helium into a refrigerant pipeline of the liquid cooling unit based on the control instruction; the helium recovery module is used for recovering and purifying helium in a refrigerant pipeline of the liquid cooling unit based on the control instruction; the refrigerant injection module is used for injecting a refrigerant into a refrigerant pipeline of the liquid cooling unit based on the control instruction; the mechanical arm module is used for controlling connection and disconnection between the second end of the integrated system refrigerant pipeline and the liquid cooling unit refrigerant pipeline based on the control instruction. The system is high in integration level, the process period can be shortened, helium with high cost is recycled, and the cost and energy consumption are remarkably reduced.

This heat source device comprises: a cylinder (71) having a discharge port (71a) in the lower part thereof; a fan (30) for conveying air that exchanges heat with an air heat exchanger (13); and a casing (21) including a compressor (12), the air heat exchanger (13), and a bottom plate (23) on which the cylinder (71) is installed. The heat source device additionally comprises, inside of the casing (21), a partition member (45) for demarcating a first chamber (S1) in which the air heat exchanger (13) and the fan (30) are accommodated, and a second chamber (S2) in which the compressor (12) and the cylinder (71) are accommodated. The cylinder (71) is positioned closer to the first chamber (S1) than the compressor (12).

An air conditioner according to an embodiment of the present disclosure includes a housing, a compressor disposed inside the housing and configured to compress a refrigerant, a first heat exchanger disposed inside the housing and configured to exchange heat with outdoor air, a second heat exchanger disposed inside the housing and configured to exchange heat with indoor air, a refrigerant pipe connecting the compressor and the second heat exchanger and configured to allow the refrigerant to flow therein, and a charging pipe configured to charge the refrigerant pipe with the refrigerant. The refrigerant pipe includes a first sub-pipe and a second sub-pipe connected to the second heat exchanger and configured to receive the refrigerant that has passed through the second heat exchanger. The refrigerant pipe includes a main pipe connected to the compressor and configured to allow the refrigerant that has passed through the first sub-pipe and the second sub-pipe to be combined. The charging pipe may be configured to be connected to the first sub-pipe.

A system for capturing volatile fluids and agglomerations discharged from chemical and refrigerant systems during an overpressure situation includes an energy dissipation assembly that uses impact bars (116) and irregular surfaces to decrease the energy of such discharges by breaking up the agglomerations, and one or more tanks (154, 178) for capturing constituents for reuse, safe venting to atmosphere, or disposal.

There is proposed a heat source unit of an air conditioner that suppresses occurrence of pressure abnormality in a refrigerant flow path due to filled carbon dioxide refrigerant becoming supercritical. The heat source unit is connected to a utilization unit and constitutes the air conditioner. The heat source unit includes a compressor, a heat source heat exchanger, a first shutoff valve, a second shutoff valve, a refrigerant flow path, and a refrigerant. The refrigerant flow path is a flow path in which the compressor, the heat source heat exchanger, the first shutoff valve, and the second shutoff valve are connected by a refrigerant pipe. The refrigerant flow path is filled with the refrigerant. The refrigerant includes carbon dioxide. A filling amount V1 (kg) of the refrigerant filled in the refrigerant flow path, a volume V2 (L) of the refrigerant flow path, and a design pressure P (MPa) of the refrigerant flow path satisfy the following relationship. V1 × a ≤ V2 ≤ V1 × b, a = 0.078 × P2 - 2.111 × P + 15.771, and b = 0.055 × P2 - 1.768 × P + 16.144

Example embodiments disclose a method including in response to receiving a request associated with a thermal system containing a thermal management fluid; selecting one of a first tool kit, a second tool kit, a third tool kit, and any combination thereof, based at least in part in a composition of the thermal management fluid; delivering the selected first tool kit, second tool kit, third tool kit or any combination thereof to a remote location; and processing, at the remote location, the thermal management fluid to be constituted as recovered or recycled thermal management fluid. The first tool kit contains a plurality of first items, the second tool kit contains a plurality of second items and the third tool kit contains a plurality of third items.

An assembly (100, 100') for a circuit (KL) with a gaseous or liquid medium, preferably for use in a heat pump, wherein the assembly (100, 100') is configured to include several adjacent components, comprises a housing (110) with at least one outlet (180) and at least one inlet (190). The housing (110) includes at least one connection (150, 160, 170) arranged on the housing (110). The assembly (100, 100') is connectable to a high-pressure sensor (152) and / or a high-pressure switch (162) and / or a filling valve (172) via a connection (150, 160, 170) each.

The disclosure relates to a heat pump system comprising a refrigerant circuit connecting a compressor, a heat source heat exchanger, a first expansion valve, and a usage heat exchanger, the refrigerant circuit having an indoor portion and an outdoor portion, wherein the outdoor portion of the refrigerant circuit comprises the compressor, the heat source heat exchanger, and the first expansion valve, and the indoor portion of the refrigerant circuit comprises the usage heat exchanger, a control unit configured to control the heat pump system, a first release device arranged in the refrigerant circuit, and a second release device arranged in the refrigerant circuit, wherein the first release device and the second release device separate the indoor portion of the refrigerant circuit from the outdoor portion of the refrigerant circuit, wherein the control unit is configured to, in a release operation mode upon receipt of a signal that a refrigerant leakage is detected in the refrigerant circuit of the heat pump system, operate the first release device and the second release device to shut off the indoor portion of the refrigerant circuit from the outdoor portion of the refrigerant circuit, and to release refrigerant from the indoor portion of the refrigerant circuit to the outside of the refrigerant circuit via the first release device and the second release device.

The present application relates to the technical fields of refrigeration machine manufacturing, and discloses a refrigerant filling machine and a filling method based on a refrigeration machine, which comprises a column fixed on the top of a machine table and a disc fixed on the top of the column, and the top of the disc is provided with a filling mechanism arranged in a ring array with the center point of the disc for filling refrigerant into the refrigerant, the filling mechanism comprises a feeding pipe, the inner wall of the feeding pipe is sleeved with a pushing column, the top of the feeding pipe is provided with a pushing mechanism for driving the pushing column to ascend and descend, and the outer wall of the feeding pipe is provided with a limiting mechanism for limiting the ascending position of the pushing column, the limiting mechanism is used to set a space of a specified size for filling refrigerant, and the filled refrigerant is pushed out at one time by the pushing mechanism, so that the filling amount of the refrigerant is controlled, the filling efficiency is improved compared with the traditional filling by weighing, and the residual amount of the refrigerant in the feeding pipe is reduced, so that the filling precision is improved.

Provided is an air conditioner capable of quickly recovering a refrigerant from a utilization unit in which a refrigerant leak has occurred in the event of a refrigerant leak. An air conditioner (100) is provided with a heat source unit (10), a utilization unit (30), communication pipes (2, 4), a shut-off valve (52), and a service port (60). The utilization unit is disposed in the air-conditioning space. Communication piping (2, 4) connects the heat source unit and the utilization unit. The shut-off valve is disposed outside the air-conditioning space and is provided to the communication pipe (4). A service port (60) is provided in the communication pipe (4) between the shut-off valve and the utilization unit.

A heat source optimization system capable of alternating configurations between an air exchange system and a geothermal system and / or earth loop systems depending on an instantaneous need and / or desire for taking in or discharging heat, while simultaneously remaining operational and without reversing valving or changing the rotational direction of a refrigerant compressor. The system manages refrigerant, and, via a processor and / or controller system, determines where to obtain refrigerant and also the quantity of refrigerant to be obtained. Additionally, the system, via a processor and / or controller system, both determines the optimal location or locations from which to take in heat or to which heat is to be rejected.

Disclosed is an improved fish tape and housing. Generally, the disclosed fish tape and housing includes: a modified and scaled fiberglass, metallic or plastic tape designed for accurately measuring the total length of round pipes; a modified tip for the tape that prevents damage to copper piping of a refrigerant piping system; and a housing containing the tape such that the tape is extractable from the housing and wherein the housing includes squeegee that wipes clean the tape as it is extracted from the housing.

The invention relates to the field of refrigerant recovery, in particular to a full-automatic refrigerant recovery system and a refrigerant flow control method thereof. The method comprises the following steps that when a main control unit detects that a user sends a refrigerant recovery instruction based on an interface, the initial safe opening degree is calculated; generating a recovery control instruction based on the initial safety opening degree, and sending the recovery control instruction to a flow regulating valve to perform refrigerant recovery operation; real-time vibration recovery detection and liquid cooling impact risk analysis are conducted on refrigerant recovery operation according to the vibration detection unit, and the liquid impact risk of the current valve opening degree is obtained; carrying out convergence adjustment on the opening degree of the valve based on the liquid impact risk, and continuously monitoring a vibration signal of the recycling machine; whether the liquid impact residual phenomenon exists or not is determined based on the recycling machine vibration signal, and when it is determined that no liquid impact phenomenon exists, the opening degree of a flow adjusting valve is maintained; the weight value of the recycled steel cylinder is detected based on the metering unit. According to the invention, efficient and safe full-automatic refrigerant recovery management is realized.

The present disclosure relates to an outdoor unit for a heat pump system including a refrigerant circuit. The outdoor unit comprises an outdoor unit casing accommodating an electric box including a control unit, a compressor, a fan, a release device, and a heat source heat exchanger. The release device is connected to the refrigerant circuit. The control unit is configured to operate the release device upon detection of a refrigerant leakage in the refrigerant circuit and the release device is configured to release refrigerant from the refrigerant circuit in a direction away from at least the electric box.