415results about "Refrigerants" patented technology

The invention belongs to the technical field of refrigerant filling, and particularly relates to a refrigerant filling device with a vacuum leak detection function, which comprises a displacement plate, a box body, a controller, a liquid storage tank, a vacuum pump, a manifold assembly, a booster pump and a connecting pipe assembly, and the connecting pipe assembly is connected with a balance assembly; the connecting pipe assembly comprises a manifold head, and the manifold head is connected with the balance assembly through a corrugated pipe. When the refrigerating system is vacuumized, air and water in the refrigerating system are pumped away through the vacuum pump, the sealing plate, the connecting ring and the corrugated pipe synchronously move towards the manifold head under the action of negative pressure, the connecting ring drives the corrugated pipe to be folded, and when the reset spring is stretched to the limit, the corrugated pipe is completely folded; moisture in the annular groove of the corrugated pipe is extruded out of the annular groove and pumped away through the vacuum pump, the corrugated pipe is in a completely folded state, the space of the annular groove is controlled to be in an extremely small range, the moisture is not prone to entering the annular groove when passing through the corrugated pipe, and moisture accumulation in the annular groove is avoided.

Connection adapter for docking and undocking a maintenance station to a service valve of a third-party system in which a working fluid circulates in a closed circuit with a connection via which for filling working fluid under pressure can be fed from the maintenance station into the connection adapter or via which working fluid under pressure can be discharged, with a dead space which is ventilated via a venting path, the connection adapter includes a servo space in which a servo piston for opening and closing the venting path is accommodated, and a valve spindle that operates a valve element, and a hold-down device for opening a spring valve insert forming the service valve, which is designed and arranged in such a way that it only opens the spring valve insert after the servo piston has reached a position closing the ventilation path.

The present invention relates to system, equipment and methods for preparing and charging a refrigerant circuit with either (1) a fluoroolefin refrigerant compositions stabilized with an inhibitor agent which prevents or reduce oligomerization or polymerization of the fluoroolefin component of the composition or (2) a purified fluoroolefin refrigerant compositions by removing the inhibitor agent, and / or maintaining the integrity of fluoroolefin refrigerant compositions in refrigeration equipment by circulating the fluoroolefin refrigerant compositions in the refrigerant equipment through or more columns or devices to remove at least one of oxygen and oxygen containing contaminants, moisture / water, oligomerization / polymerization by-products.

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.

Connection adapter for docking and undocking a maintenance station to a service valve of a third-party system in which a working fluid circulates in a closed circuit, in particular an air conditioning system, with a connection via which pressurised working fluid from the maintenance station can be fed into the connection adapter for filling or via which pressurised working fluid can be discharged, with a dead space which is ventilated via a venting path even when the service valve is coupled to the connection adapter, with a servo chamber which is fluidically connectable to the connection, in which a servo piston is accommodated for opening and closing the venting path, which is urged by an overpressure in the servo chamber towards its position closing the venting path, and with a valve spindle which actuates a first valve element and a second valve element, wherein the first valve element is designed and positioned such thatthat when the valve spindle is moved to push open the service valve, it fluidically connects the servo chamber with the connection and the second valve element is designed and positioned such that it only opens and fluidically connects the dead space with the servo chamber after the servo piston has reached a position closing the venting path and with a hold-down device for opening the spring valve insert forming a component of the service valve, which is designed and arranged such that it only opens the spring valve insert after the servo piston has reached a position closing the venting path.

An HVAC system includes a first heat exchange coil with a plurality of coil circuits. For each coil circuit of the plurality of circuits, there is a manifold line fluidly coupling the coil circuit to a compressor. A first controllable valve is positioned in a first manifold line coupling a first coil circuit of the plurality of coil circuits to the compressor. A second controllable valve is located in a conduit fluidly coupling the first coil circuit to a second heat exchange coil. A controller is communicatively coupled to the first and second controllable valves and operates the valves to provide charge compensation in a heating and / or cooling mode.

A refrigerant storage unit (10) of a refrigeration system (60) for a motor vehicle (100) is described, wherein the refrigerant storage unit (10) is connected to at least one heating device which is in thermal contact with the housing (12) of the refrigerant storage unit (10). The heating device is provided to have at least one heating conductor section (24) extending along and / or through the housing (12), through which a heating fluid flows. Furthermore, a thermal management system with such a refrigerant storage unit (10) and a motor vehicle with such a thermal management system are described.

This refrigerant discharge device 100 discharges a refrigerant from a refrigeration device 1 having a refrigerant circuit 10 for enclosing the refrigerant and an odor component and circulating the refrigerant and the odor component. The refrigerant discharge device 100 includes a body part 111 storing a substance 101 for capturing the odor component. The refrigerant discharge device 100 includes: an introduction port 112 which is connected to the body part 111 and can introduce the refrigerant and the odor component discharged from the refrigeration device into the body part 111; and a discharge port 113 which is provided at a position different from the introduction port 112 in the body part 111 and can discharge the refrigerant from the body part 111 to a part other than the body part 111.

A refrigeration system is disclosed. The system includes a compressor, a condenser, an expansion device, and an evaporator, fluidically connected to form a refrigeration circuit. The system includes a refrigerant composition comprising an environmentally suitable chiller refrigerant having a 100-year direct global warming potential (GWP) of less than 150. The refrigerant composition includes a mixture comprising R-1336mzz-(Z) and R-1130-(E), wherein the amount of R-1336mzz-(Z) in the mixture is in a range of from or about 69% by weight to or about 81% by weight, and the amount of R-1130-(E) in the mixture is in a range of from or about 31% by weight to or about 19% by weight.

A method, system and device provides for the conversion of a mini-split AC unit to a mini-split AC unit with quick connect pre-charged ends. Quick connect fittings are placed onto the AC unit lines after the nitrogen pre-charge is released from the liquid line. A fitting tool / device having one or more fittings and valves is attached to the liquid line. A vacuum pump attached to the fitting tool / device vacuums the evaporator until its micron level falls and stays below 500 microns. Then, a refrigerant line attached to the fitting tool / device adds approximately 1 ounce of refrigerant to the evaporator.

A method, system and device provides for the conversion of a mini-split AC unit to a mini-split AC unit with quick connect pre-charged ends. Quick connect fittings are placed onto the AC unit lines after the nitrogen pre-charge is released from the liquid line. A fitting tool / device having one or more fittings and valves is attached to the liquid line. A vacuum pump attached to the fitting tool / device vacuums the evaporator until its micron level falls and stays below 500 microns. Then, a refrigerant line attached to the fitting tool / device adds approximately 1 ounce of refrigerant to the evaporator.

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 discloses refrigerant filling equipment for a horizontal rotational flow evaporator, which belongs to the technical field of refrigerant filling and comprises an injection mechanism for injecting an external refrigerant into the evaporator. The injection mechanism is provided with a pumping mechanism used for pumping out original redundant refrigerants in the evaporator and a connecting mechanism used for connecting the injection mechanism with the refrigerant injection opening. The pumping and injecting functions of the refrigerant are integrated in single gun body equipment, and the whole process can be controlled by switching the gear of the knob, so that the operation steps are greatly simplified, and the repair and maintenance efficiency is remarkably improved; a mechanical connecting mechanism based on gear transmission and a worm and gear self-locking effect is adopted, after the four fixing pieces are inserted into an injection opening, the four fixing pieces are indirectly driven to execute synchronous and symmetrical radial movement through rotation of the rotary knob, and therefore the four fixing pieces are firmly clamped on the outer wall of an evaporator refrigerant injection pipe; and stable and reliable connection between the filling equipment and the evaporator is ensured.

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.

Disclosed herein is a system for determining charge settings for a refrigeration circuit of an HVAC unit. The system comprises a controller comprising one or more processors coupled to a memory storing instructions executable by the processors, wherein the controller is configured to receive a set of data pertaining to an operating environment of the HVAC unit and an internal volume of the refrigeration circuit, estimate a saturated suction temperature of a refrigerant in the refrigeration circuit based on the operating environment, and determine a weight of the refrigerant to be added to the refrigeration circuit or a subcooling target temperature for a liquid line associated with the refrigeration circuit based on the estimated saturated suction temperature and the internal volume.

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).

The present invention relates to a system, facility, and method for preparing and filling a refrigerant circuit with either (1) a fluorolefin refrigerant composition stabilized with an inhibitor that prevents or reduces oligomerization or polymerization of the fluorolefin constituent of the composition, or (2) a fluorolefin refrigerant composition purified by removing the inhibitor, and / or maintaining the integrity of the fluorolefin refrigerant composition in a cooling facility by circulating the fluorolefin refrigerant composition through one or more columns or devices to remove at least one of oxygen and oxygen-containing contaminants, moisture / water, and oligomerization / polymerization by-products.

A refrigerant port adapter includes an adapter body configured to fit over a first port. The adapter body is secured to the first port. A fluid-tight seal is provided between the first port and the adapter. The adapter body includes a valve section that contains a valve core and is configured as an R-1234yf port, either a high-pressure side or a low-pressure side R-1234yf port.

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 refrigeration cycle device (100) is provided with a compressor (21), a use-side heat exchanger (31), a heat-source-side expansion valve (25), a heat-source-side heat exchanger (23), a tank (26), and a main refrigerant circuit (10). A non-azeotropic refrigerant mixture is sealed in the main refrigerant circuit (10). A first value obtained by dividing a value obtained by subtracting the second amount from the first amount by the first amount exceeds a value determined from the mixed refrigerant. The first amount is the amount of the mixed refrigerant enclosed in the main refrigerant circuit (10). The second amount is the amount of liquid refrigerant stored in the tank (26).

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.

The present invention relates to an integrated system and process for reclaiming fluoroolefin refrigerant compositions which are unsuitable for and non-compliant with existing industry and environmental standards and producing industry compliant refrigerant compositions that are traceable and stabilized to prevent fluoroolefin components from oligomerization or polymerization.

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