35 results about "Refrigerant reclamation" patented technology

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 present application provides an air conditioner and an automatic refrigerant recovery method. The air conditioner comprises an indoor unit, an outdoor unit, and a recovery assembly. The recovery assembly comprises a detection module, a control module, and an execution module; the detection module is used for acquiring air conditioner operation data and refrigerant detection data of an indoor space; the execution module is used for controlling connection / disconnection of pipes of the air conditioner and achieving recovery of a refrigerant from the indoor unit to the outdoor unit; and the control module is communicatively connected to the detection module and the execution module. In the air conditioner and the automatic refrigerant recovery method provided by the present application, by means of the structure of the air conditioner itself, the refrigerant is recovered to an outdoor heat exchanger for storage, thereby simplifying the structures of automatic refrigerant recovery apparatuses, and thus lowering the design difficulty, installation cost and maintenance cost of the automatic refrigerant recovery apparatuses.

The present application relates to an air source heat pump system, through the setting of combined liquid accumulator and the improved start-up and shutdown anti-liquid return control program matched with the combined liquid accumulator, the liquid return during the start-up process of the unit can be effectively avoided, the time from the start-up to the stable operation of the refrigeration system is shortened, the problem of liquid strike of the compressor during the start-up process is effectively solved, the reliability and service life of the unit are improved, and during the shutdown process of the compressor, the excessive refrigerant of the system is recycled to the combined liquid accumulator, so that the problem of excessive refrigerant of the unit during the next stage start-up for a short time is avoided.

A connector device for quickly charging an electric vehicle according to exemplary embodiments of the present invention comprises: a power supply line for supplying power; a refrigerant supply line for introducing a refrigerant; a refrigerant recovery line for recovering the introduced refrigerant; a connector unit that is coupled to each of the refrigerant supply line and the refrigerant recovery line, and can be connected to a charging terminal of the electric vehicle in order to supply power to the electric vehicle; and a refrigerant bypass line which is provided inside the connector unit and to which one of the two ends of the refrigerant supply line and one of the two ends of the refrigerant recovery line are connected. At least a portion of the refrigerant bypass line may be provided with a short-circuit prevention unit provided to maintain an insulating function even in a cryogenic state imparted by the refrigerant, and thus the charging efficiency of the connector device for quickly charging the electric vehicle may be significantly improved.

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 utility model discloses an efficient refrigerant recycling device, which belongs to the field of refrigerant recycling and comprises a refrigerant recycling machine body, a collecting pipe is connected to a collecting opening of the refrigerant recycling machine body, a tightening ring is connected to the collecting pipe in an external threaded manner, and a sealing ring is arranged on one side, close to the collecting pipe, of the tightening ring. A recycling head is fixedly mounted at the end, away from the refrigerant recycling machine body, of the collecting pipe. The sealing ring is arranged to be matched with the sealing plug, so that after a refrigerant is recycled, the driving extrusion state of the collecting sliding plug is removed by reversely rotating the sealing ring, and the collecting sliding plug moves towards the recycling head under the action of the compression spring and the arc-shaped filter screen, is attached to the conical surface groove and seals the collecting pipe, and a closed environment is formed; therefore, the situation that after recycling is completed, the refrigerant left in the collecting pipe leaks into the external environment, and air pollution is caused is avoided, and the effect of improving the environmental protection performance of the refrigerant recycling machine is achieved.

The present invention comprises: a high pressure connection port that communicates with a high pressure-side connection opening of a high pressure-side pipe of a refrigeration cycle device; a low pressure connection port that communicates with a low pressure-side connection opening of a low pressure-side pipe of the refrigeration cycle device; a suction connection port that connects to a suction opening of a recovery machine; a discharge connection port that connects to a discharge opening of the recovery machine; a liquid connection port that connects to a liquid opening of a cylinder; a gas connection port that connects to a gas opening of the cylinder; a switching unit that switches between a flow passage of a liquid recovery mode in which liquid refrigerant within the refrigeration cycle device is recovered and a flow passage of a gas recovery mode in which gas refrigerant within the refrigeration cycle device is recovered; and a control device that performs the switching of the flow passage of the switching unit. The control device includes: a determination unit that determines a switch from the gas recovery mode to the liquid recovery mode on the basis of the temperature of a liquid reservoir of the refrigeration cycle device; and a switching processing unit that performs a flow passage switching process of the switching unit.

According to the four-pipe unit and the control method thereof, in the four-pipe unit, an exhaust port is connected with a D port, an E port is connected with a T port, a first throttling element is arranged on a first branch, the first branch is connected with a P port and an R port, a second branch is connected with an O port and an air suction port, an S port is connected with the second branch, a C port is connected with an M port, and a third branch is connected with an N port and the first branch; a first switch valve is arranged on the fourth branch, the fourth branch is connected with the N port and the low-pressure injection inlet, a second switch valve is arranged on the fifth branch, the fifth branch is connected with the exhaust port and the high-pressure injection inlet, and the mixing outlet is connected with the air suction port. According to the four-pipe unit and the control method thereof, the refrigerant in the balance heat exchanger is recycled into the refrigerant circulation loop through the ejector, and the problem that the refrigerant in the system circulation loop is insufficient can be solved.

The present application relates to the first compressor field, specifically to a kind of refrigerant recovery system and control method, mixed tank, for storing refrigerant to be recycled;First heat exchanger, with first passage and second passage are coupled with each other;The inlet of first passage is communicated with the outlet of mixed tank;First compressor, its inlet is communicated with the outlet of first passage;Separation device, its inlet is communicated with the outlet of first compressor;Separation device includes first outlet and second outlet, second passage is easy adsorption component from first outlet discharge, difficult adsorption component is discharged from second outlet, part of heat of difficult adsorption component discharged from second outlet is used to make the refrigerant flowing through first passage temperature rise;First storage device, for storing easy adsorption component from first outlet discharge;Second storage device, for storing difficult adsorption component from second outlet discharge, to effectively utilize the heat generated in the process of adsorption separation, improve separation efficiency.

The first recovery device (16) recovers the compressed and condensed refrigerant generated by compressing and condensing the air-conditioning refrigerant. The adsorption device (418) includes an adsorption module (468). The adsorption module (468) has an adsorbent (350) that adsorbs the gas component (423) of the air-conditioning refrigerant in the mixed gas (22) composed of the gas component (423) of the air-conditioning refrigerant and the non-condensable gas (26) contained in the inside of the first recovery device (16) that recovered the compressed and condensed refrigerant. The desorption device (19) desorbs the gas component (423) of the air-conditioning refrigerant adsorbed to the adsorbent (350) and accumulates the desorbed gas component (423) of the air-conditioning refrigerant.

A refrigerant recovery system includes a refrigerant circuit having a vacuum pump, a first connection port, a second connection port, a discharge port, and a multi-way valve that selectively fluidly connects the ports to the vacuum pump. The multi-way valve has a first configuration, a second configuration, and a third configuration for fluidly connecting the ports to the suction port and the discharge port of the vacuum pump. One method is to recover refrigerant from a refrigerant circuit using a refrigerant recovery system. The method includes operating the refrigerant recovery system in a liquid recovery configuration to transfer liquid refrigerant in the refrigerant circuit into one or more recovery cylinders; and operating the refrigerant recovery system in a gas recovery configuration to transfer gaseous refrigerant in the refrigerant circuit into one or more recovery cylinders. The recovery vehicle includes a transfer circuit of the refrigerant recovery system.

A refrigerant recovery system includes a refrigerant circuit with a vacuum pump, a first connection port, a second connection port, an exhaust port, and multiple-way valves that selectively fluidly connect said ports to the vacuum pump. The multiple-way valves have a first configuration, a second configuration, and a third configuration for fluidly connecting the ports to a suction inlet and a discharge outlet of the vacuum pump. A method is for recovering refrigerant from a refrigerant circuit using a refrigerant recovery system. The method includes operating the refrigerant recovery system in a liquid recovery configuration to transfer liquid refrigerant in an refrigerant circuit into one or more recovery cylinders and operating the refrigerant recovery system in a gas recovery configuration to transfer gaseous refrigerant in the refrigerant circuit into the one or more recovery cylinders. A recovery cart includes a transfer circuit of a refrigerant recovery system.

The utility model relates to the technical field of refrigerant recycling devices, in particular to an air conditioner and refrigerator refrigerant recycling device which comprises a refrigerant recycling machine body, a communicating pipe and a heat dissipation opening are arranged on the refrigerant recycling machine body, and the outer surface of the refrigerant recycling machine body is covered with a composite protective layer. The composite protective layer comprises a chemical nickel-plated phosphorus alloy inner protective layer and a polytetrafluoroethylene outer protective coating, and the chemical nickel-plated phosphorus alloy inner protective layer has excellent corrosion resistance, so that the corrosion of a high-humidity and high-corrosion environment to the equipment body can be resisted; the polytetrafluoroethylene outer protective coating has the characteristics of wear resistance, chemical corrosion resistance and low friction coefficient, so that the protective capability of the surface of the equipment can be further enhanced, the problem of possible leakage of the recycling machine due to external environment corrosion in the prior art is effectively solved, the service life of the equipment is prolonged, and the pollution risk to the environment is reduced; and meanwhile, the health and safety of workers are also guaranteed.

Provided is a heat pump system having a compressor, a liquid-side on-off valve, a gas-side on-off valve, and a controller. The controller is configured to perform a refrigerant recovery operation for recovering refrigerant from a utilization-side piping section to a heatsource-side piping section by operating the compressor while the liquid-side on-off valve is closed and the gas-side on-off valve is open, and control the system such that the gas-side on-off valve starts closing when a predetermined valve-close condition is satisfied during the compressor is operating for recovering refrigerant, and such that the operation of the compressor for recovering refrigerant stops after the closing of the gas-side on-off valve started.

Provided is a refrigeration device capable of reliably performing refrigerant recovery after stopping a heating operation. This refrigeration device executes a heating operation. The refrigeration device comprises a refrigerant circuit, a heat source fan, and a control unit. The refrigerant circuit has a compressor and a heat source heat exchanger. The heat source fan supplies air to the heat source heat exchanger. The control unit controls the compressor and the heat source fan. Upon detecting an instruction to stop the heating operation, the control unit drives the heat source fan while keeping the compressor stopped, and starts a first operation for recovering refrigerant to the compressor or the heat source heat exchanger. The control unit stops the heat source fan and ends the first operation when an end condition that refrigerant in the refrigerant circuit is in a predetermined state is satisfied.

This invention discloses a refrigeration control method and system, belonging to the field of refrigeration technology. The method includes converting a pre-prepared liquid first refrigerant into a gaseous first refrigerant; mixing the gaseous first refrigerant and a liquid second refrigerant to obtain a gas-liquid mixture; using a jet pump to transport the gas-liquid mixture to a cooling zone to achieve refrigeration; recovering the gas-liquid mixture from the cooling zone and performing gas-liquid separation to obtain a first refrigerant recovery; and transferring the first refrigerant recovery to a reuse zone, enabling efficient, safe, and low-consumption refrigeration.

Systems and methods for heat pumps with energy recovery systems for selectively heating water and provided. The heat pump system may include an outdoor air heat exchanger, a compressor, an expansion valve, solenoid valves for selectively restricting or permitting refrigerant flow, and a liquid heat exchanger (e.g., water cooled condenser) for recovering energy from the refrigerant to heat water. The liquid heat exchanger may be connected to one or more water heaters for heating water using the energy recovered. The heat pump system may include valves for selectively transitioning the system between a cooling mode with water heating mode, a cooling mode without water heating, and a heating mode.

The utility model discloses an explosion-proof type gas-liquid separation structure of explosion-proof refrigerant recovery equipment, which comprises a tank body, one side of the lower part of the tank body is fixedly communicated with a gas inlet pipe, one side of the upper part of the tank body is fixedly communicated with a gas outlet pipe, the bottom of the tank body is fixedly communicated with a liquid discharge pipe, and a plurality of umbrella type separators are fixedly arranged on the inner wall of the tank body from bottom to top. A wire mesh demister is fixedly mounted on the inner wall of the tank body and is positioned at the gas outlet pipe; a first static elimination part is mounted in the tank body and is positioned at the air inlet pipe; and a second static electricity eliminating part is mounted in the tank body and is positioned between two adjacent umbrella type separators. The first static electricity elimination component and the second static electricity elimination component are used in cooperation, comprehensive and efficient static electricity elimination is achieved in the whole process of input and separation of refrigerants, and the operation safety of equipment is enhanced.

The present application relates to a kind of microchannel laser monobar test system refrigerant recovery device and recovery method, belong to the technical field of semiconductor laser.The device includes test base, gas storage tank, liquid discharge tank, exhaust tank and refrigerator, wherein, test base is provided with liquid inlet hole and liquid return hole, liquid inlet hole is connected to refrigerator by liquid inlet pipe, liquid inlet pipe is connected with gas storage tank, liquid return hole is connected to refrigerator by liquid return pipe, liquid return pipe is respectively connected with liquid discharge tank and exhaust tank by liquid discharge pipe, and the bottom of liquid discharge tank and exhaust tank is respectively connected to refrigerator by recovery pipe.The present application is simple in structure, easy to operate, high in production efficiency, can realize refrigerant automatic recovery and reuse, reduce production cost and improve test pass rate.

A process and apparatus cool a pyrolyzed stream and a dehydrogenated stream in respective cold boxes by use of a refrigerant compressed with a common compressor. The refrigerant is compressed and used to cool a pyrolysis cold box and a dehydrogenation cold box.

The utility model provides refrigerant recycling and purifying equipment which is characterized by comprising a recycling module, a one-way stop valve and a gas-liquid separator, at least one of an oil removal module and a water removal module; the water removal module is connected with the oil removal module through a pipeline, and the oil removal module is connected with the recovery module through a pipeline; the one-way stop valve is installed between the gas-liquid separator and the water removal module, and the gas-liquid separator is connected into the oil removal module and the recovery module. The water removal module and the oil removal module are introduced into the recovery equipment, so that the problem that pollution exists when refrigerants are recovered from the device is solved, multi-phase recovery is introduced, the flow direction is jointly regulated and controlled through the valve assembly, unexpected flow is avoided, and the recovery efficiency is improved; refrigerants with different qualities are recovered according to local conditions, so that the problem of recovery investment is solved, and the recovery speed is greatly increased; the overall arrangement of the device is integrally simplified, production and installation are convenient, and the total cost of equipment is reduced.

The utility model discloses an automobile refrigerant recycling and filling machine, and belongs to the technical field of automobiles. The automobile refrigerant filling machine solves the problems that in the prior art, an automobile refrigerant filling machine cannot treat refrigerants recycled from an air conditioner, and when lubricating oil is filled into the air conditioner system, the oil content of lubricating oil of the refrigerants in the air conditioner system does not meet the set requirement easily. The device mainly comprises a mixed liquid storage tank, a refrigerant liquid storage tank, a lubricating oil storage bottle, a liquid pump, a vacuum pump and an air conditioner connecting pipe, a first pipeline and a second pipeline are installed on the upper side and the lower side of the mixed liquid storage tank respectively, a tank opening of the refrigerant liquid storage tank is connected with a refrigerant liquid outlet pipe, and the refrigerant liquid outlet pipe is connected with a third pipeline and a fourth pipeline respectively. A bottle opening of the lubricating oil storage bottle is connected with a fifth pipeline, a liquid inlet of the liquid pump is connected with a liquid inlet pipe, the liquid inlet pipe is connected with the second pipeline, the third pipeline, the fifth pipeline and the sixth pipeline, a liquid outlet of the liquid pump is connected with a liquid outlet pipe, and the liquid outlet pipe is connected with the first pipeline and the seventh pipeline.

The invention relates to the technical field of air conditioners, in particular to a refrigerant recovery control method for a multi-split air conditioner and the multi-split air conditioner, and aims to solve the problems that refrigerant recovery is not thorough and a unit is forcibly shut down after recovery is completed. Therefore, the control method comprises the steps that when it is detected that refrigerant leakage happens to the indoor unit or the outdoor unit, the outdoor unit or the indoor unit with the refrigerant leakage is determined as a target unit; all indoor units and outdoor units are controlled to run according to the preset running state; turning off at least one block valve on a high-pressure air pipe, a low-pressure air pipe and a liquid pipe of the target machine so as to discharge the refrigerant from the target machine; whether refrigerant recovery is completed or not is judged; and when it is judged that refrigerant recovery is completed, cut-off operation is executed on cut-off valves, in an open state, on the high-pressure air pipe, the low-pressure air pipe and the liquid pipe of the target machine. Therefore, migration and discharge of the refrigerant in the system can be accurately controlled, and other indoor units and outdoor units which operate normally can work normally without forced shutdown.

The present application relates to refrigerant recovery technical field, specifically to a kind of medium phase change purging recovery system and control method thereof, comprising, pressure reducing valve, first check valve, end workpiece, evaporator group, liquid storage tank and drain valve;Wherein the inlet end of pressure reducing valve is gas source import, and the gas outlet end of drain valve is gas source export;Refrigeration system;Still include first temperature sensor, second temperature sensor;Heater;Wherein: the temperature detected by first temperature sensor is T1, and the temperature detected by second temperature sensor is T2, when T1-T2≤T, start heater and refrigeration system;Wherein T is the fixed temperature value of T1-T2 measured when most of refrigerant in refrigerant recovery pipeline is discharged.The medium phase change purging recovery system and control method thereof of the present application judge whether to access heater to heat dry gas by the temperature difference of gas entering end workpiece and discharging end workpiece, accurate control, reduce energy waste.

The application discloses a kind of computing method of the reduction quantity of waste air conditioner refrigerant recovery, and the reduction quantity ER of waste air conditioner refrigerant recovery is calculated by the difference between the carbon emission BE of recovery refrigerant scenario baseline and the carbon emission PE of carbon reduction behavior, the carbon emission BE of recovery refrigerant scenario baseline is calculated by the mass of the i-th refrigerant and the emission factor of the i-th refrigerant escape, and the carbon emission of waste refrigerant recovery and transportation is much smaller than the carbon emission of refrigerant escape, so the carbon emission PE of carbon reduction behavior is valued as 0 when calculating.The computing method of the application is aimed at the application scenario of recycling waste air conditioner refrigerant, and the data detection is scientific and efficient, which can quantitatively obtain the reduction quantity of waste air conditioner refrigerant recovery, and provide data support for energy saving and environmental protection.

The invention belongs to the technical field of refrigerant recovery, and particularly relates to a refrigerant recovery device which comprises a refrigerant extracting and purifying mechanism, a refrigerant storing and metering mechanism, a safety connector assembly, a position adjusting mechanism, a plurality of sets of temperature monitoring and auxiliary heat dissipation mechanisms, a refrigerant intermittent purity spot check mechanism and a PLC. Through precise sealed communication of the extraction purification and storage metering mechanism, rapid switching and continuous storage of the steel cylinder, temperature dynamic monitoring and self-adaptive heat dissipation, rapid purity detection and filling speed self-adaptive adjustment, the recovery efficiency is remarkably improved, refrigerant leakage and operation risks are reduced, the hidden danger of overpressure of the steel cylinder is avoided, it is guaranteed that the filling amount reaches the standard and safety meets the standard, and the recovery efficiency is improved. The purity of more than or equal to 99.5% is stably realized, batch unqualified products and rework waste are avoided, and safe and efficient compliant recovery is achieved.

After the heating operation is complete, the first refrigerant in the first refrigerant circuit is recovered into the heat source component. [Solution] The first flow path switching mechanism (15) can switch the flow path of the first refrigerant in the first refrigerant circuit (10) between a first flow path state in which the first refrigerant flows sequentially through the first compressor (11), the refrigerant heat exchanger (30), the first expansion valve (13), and the heat source heat exchanger (12), and a second flow path state in which the first refrigerant flows sequentially through the first expansion valve (13), the refrigerant heat exchanger (30), the first compressor (11), and the heat source heat exchanger (12). In a refrigerant recovery operation in which the first refrigerant in the first refrigerant circuit (10) is recovered to the heat source element component (18) after the end of the heating operation, the control unit (100) drives the first refrigerant circuit (10) so that the flow path of the first refrigerant in the first refrigerant circuit (10) is switched from the first flow path state to the second flow path state and the first expansion valve (13) is closed.