CN102706052B - Full-automatic four-port recycling machine and using method thereof - Google Patents
Full-automatic four-port recycling machine and using method thereof Download PDFInfo
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- CN102706052B CN102706052B CN201210175836.6A CN201210175836A CN102706052B CN 102706052 B CN102706052 B CN 102706052B CN 201210175836 A CN201210175836 A CN 201210175836A CN 102706052 B CN102706052 B CN 102706052B
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Abstract
The invention discloses a recycling machine, and provides a full-automatic four-port recycling machine and a using method thereof. The machine is easy to operate, liquid impact can be avoided during liquid recycling, and a recycling mode and a self-cleaning mode can be automatically switched in the whole process. The technical problems that crash, motor burnout, overload protector burnout and the like are easily caused, time and labor consumption is high during operation, safety accidents are easily caused and the like because liquid impact is easily caused and the whole process is manually operated in the prior art are solved. The machine comprises a shell, and a control valve, a compressor, a condenser and a fan which are arranged in the shell, wherein recycling machine gas and liquid input ports and recycling machine gas and liquid output ports which are connected with a refrigeration system are formed on the control valve; a gas-liquid sensor is arranged at the recycling machine liquid input port; a plurality of electromagnetic valves capable of controlling the on-off of input and output pipelines of the compressor are arranged on the pipelines; and the electromagnetic valves and the gas-liquid sensor are electrically connected to a control circuit and control the on-off of the corresponding pipelines through the control circuit.
Description
Technical field
The present invention relates to a kind of refrigerant recovering machine, when particularly relating to a kind of liquid recovery, can liquid hit phenomenon be avoided, to reclaim and can full-automatic four mouthfuls of recycling machines of whole-process automatic switching from clear pattern.
Background technology
Along with the reinforcement of people's environmental consciousness and rising steadily of cold-producing medium price, refrigerant recovering machine starts popularization and application day by day, but the following problem of existing refrigerant recovering machine ubiquity: 1. when recycling machine input port liquid refrigerant is more, easily there is the phenomenon that connecting copper pipe shake is severe, i.e. liquid hit phenomenon, and liquid hit phenomenon very easily causes deadlock, burn-down of electric motor, overload protective device burn, and when liquid refrigerant enters compressor in a large number, also very easily cause Compressor Piston Ring to damage, reduce the service life of recycling machine; 2. carry out gas, liquid recovery when recycling machine and need manual operation when clear, not only wasting time and energy, and very easily cause human accident because of maloperation, directly threaten the security of the lives and property of people.
Chinese patent discloses a kind of environment-friendly type cooling medium recycling machine (CN201706821U), comprise pump, compressor, heat exchanger, reservoir, filter and returnable bottle, heat exchanger comprises refrigerant inlet, refrigerant outlet, water inlet and water out, in heat exchanger inner refrigerant and water generation heat exchange, the water inlet of heat exchanger, water tank outside water out and heat exchanger is connected to form a water-flow circuit, delivery side of pump is connected with compressor air suction mouth, exhaust outlet of compressor is connected with the refrigerant inlet of heat exchanger, the refrigerant outlet of heat exchanger is connected with reservoir, reservoir is connected with filter, filter is connected with returnable bottle.This device realizes the fast cooling of cold-producing medium by arranging heat exchanger; to improve organic efficiency; but when input port liquid refrigerant is more; equally very easily there is liquid hit phenomenon; and substantial length of operation is manually, therefore same existence operation is wasted time and energy, and easily causes security incident; and the deadlock to be caused by liquid hit phenomenon, burn-down of electric motor, overload protective device burn, reduce the problems such as the service life of recycling machine.
Summary of the invention
The present invention mainly provides a kind of simple to operate; liquid hit phenomenon can be avoided during liquid recovery; and to reclaim and can full-automatic four mouthfuls of recycling machines of whole-process automatic switching and using method thereof from clear pattern; solve exist in prior art easily there is liquid hit phenomenon; thus cause deadlock, burn-down of electric motor, overload protective device burn, and substantial length of operation is manually, and operation is wasted time and energy; easy initiation security incident, reduces the technical problem in the service life of recycling machine etc.
Above-mentioned technical problem of the present invention is mainly solved by following technical proposals: a kind of full-automatic four mouthfuls of recycling machines, comprise housing and be located at the control valve in housing, compressor, condenser and blower fan, control valve is provided with recycling machine gaseous state input port, the liquid input port of recycling machine, recycling machine gaseous state delivery outlet, the liquid delivery outlet of recycling machine, recycling machine gaseous state input port is connected with refrigeration system with the liquid input port of recycling machine, recycling machine gaseous state delivery outlet is connected with recycling can with the liquid delivery outlet of recycling machine, the liquid input port of described recycling machine is provided with gas-liquid sensor, and on the connecting line of control valve and compressor chamber, on connecting line between compressor and condenser, and the connecting line between condenser and control valve be provided with several can the magnetic valve of control piper break-make, magnetic valve is connected on the control circuitry with gas-liquid sensor electrical and is controlled the break-make of corresponding pipeline by control circuit.By arranging gas-liquid sensor in the liquid input port of recycling machine, each connecting line arranges several magnetic valves, gas-liquid sensor and magnetic valve are all connected on the control circuitry again, and with several relays in control circuit, the inside of gas-liquid sensor is with closed type magnetic switch, the power on/off of closed type magnetic switch control relay coil again, in removal process when gas-liquid sensor detects that cold-producing medium is liquid state, closed type magnetic switch disconnects, when detecting that cold-producing medium is gaseous state, closed type magnetic switch is connected, each contact switch of relay again coil that is corresponding and each magnetic valve is connected, thus control the power on/off of each magnetic valve, namely the break-make of each pipeline is controlled, reclaim and from the whole-process automatic switching of clear pattern, namely automatically complete gaseous state to reclaim, liquid to reclaim and from clear, omnidistance without the need to manual operation, simple to operate, time saving and energy saving, because gas-liquid sensor can detect the gas-liquid state of cold-producing medium automatically, and control corresponding magnetic valve opening and closing by control circuit, thus avoid recycling machine to occur liquid hit phenomenon, it also avoid the deadlock caused by liquid hit phenomenon, burn-down of electric motor, overload protective device burns, Compressor Piston Ring is damaged, improve the service behaviour of recycling machine, and ensure that reclaiming function normally works for a long time, extend the service life of recycling machine.
As preferably, described magnetic valve comprises the first magnetic valve, second magnetic valve, 3rd magnetic valve, 4th magnetic valve, 5th magnetic valve, 6th magnetic valve, 7th magnetic valve and the 8th magnetic valve, recycling machine gaseous state input port second magnetic valve is connected with the import of compressor, the outlet of compressor, one tunnel first magnetic valve is connected with recycling machine gaseous state delivery outlet, another Lu Jing six magnetic valve is connected with recycling machine gaseous state input port, a road the 7th magnetic valve is also had to be connected with the import of condenser, the outlet of condenser is connected with recycling machine gaseous state delivery outlet, the import of condenser is again successively through the 3rd magnetic valve, 5th magnetic valve is connected with recycling machine gaseous state delivery outlet, be connected with the import of compressor by pipeline again between 3rd magnetic valve and the 5th magnetic valve, recycling machine liquid input port the 8th magnetic valve is connected with the liquid delivery outlet of recycling machine, gas-liquid sensor is located on the connecting line between the liquid input port of recycling machine and the 8th magnetic valve, gas-liquid sensor is connected to not only on the pipeline between the 3rd magnetic valve and the 5th magnetic valve after the import of the 4th magnetic valve and compressor is connected but also by pipeline, compressor is also electrically connected on the control circuitry.When gas-liquid sensor detects that cold-producing medium is liquid state, closed type magnetic switch in sensor disconnects, now the 5th, six, eight magnetic valves are connected, other closed electromagnetic valve, the gaseous state mouth of gas in recycling can from recycling can is extracted out, after compressor compression, becomes gases at high pressure, flow into refrigeration system from the gaseous state mouth of refrigeration system, under the effect of pressure reduction, the liquid refrigeration system in refrigeration system flows directly into recycling can from the liquid mouth of refrigeration system through the liquid mouth of recycling can; When gas-liquid sensor detects that cold-producing medium is gaseous state, the magnetic switch of gas-liquid sensor internal is connected, relay coil is energized, the second, four, seven, eight magnetic valves are connected, all the other closed electromagnetic valves, gaseous refrigerant in refrigeration system enters compressor from the gas of recycling machine, liquid input port, from the gaseous state delivery outlet of recycling machine flows into recycling can after being cooled after compression by condenser; When after recovery a period of time, namely when intrasystem pressure reaches rated pressure, recycling machine proceeds to from clear pattern, first and third, eight magnetic valves are connected, all the other closed electromagnetic valves, the gaseous state mouth of cold-producing medium from recycling can after compressor compression of recycling machine internal residual flows into recycling can, whole process controls the break-make of the magnetic valve on each pipeline automatically by relay signal, thus realize the change of path, reach and to reclaim and from clear object, structure is simple, omnidistance without the need to manual operation, automaticity is high, and it is time saving and energy saving to operate.
As preferably, connecting line between the liquid input port of described recycling machine and gas-liquid sensor is provided with the 4th check valve, connecting line between recycling machine gaseous state input port and the second magnetic valve is provided with the second check valve, the input of the second check valve is connected with the tie point of the 6th magnetic valve with recycling machine gaseous state input port, the output of the second check valve is connected with the second magnetic valve, and the second check valve and arranging of the 4th check valve flow to as to flow to recycling machine from refrigeration system; Connecting line between the liquid delivery outlet of recycling machine and the 8th magnetic valve is provided with the 3rd check valve, connecting line between recycling machine gaseous state delivery outlet and condensator outlet is provided with the first check valve, the first check valve and arranging of the 3rd check valve flow to as to flow to recycling can from recycling machine.Second check valve and the 4th check valve can prevent cold-producing medium residual in recycling machine to refrigeration system, destroying the pressure of refrigeration system backflowing in clear process; First check valve and the 3rd check valve can prevent the cold-producing medium in recycling can from backflowing in recycling machine.
As preferably, be provided with low tension switch LP in the import of described compressor, the outlet of compressor is provided with high-voltage switch gear HP, and low tension switch LP, high-voltage switch gear HP are electrically connected on the control circuitry respectively.Pressure according to recycling machine inside changes, by the switching of low tension switch inner contact to control circuit actuating signal, recycling machine is made automatically to proceed to from clear pattern, when recycling can internal pressure is too high or recycling machine outlet side passage is obstructed cause outlet side hypertonia time, or at the end of clear pattern, by the switching of high-voltage switch gear inner contact to control circuit actuating signal, compressor quits work, and makes system cloud gray model safe and reliable.
As preferably, described gas-liquid sensor comprises valve body and one end and is encapsulated in hollow guide rod in valve body container cavity, be provided with magnetic switch corresponding in the hollow guide rod in valve body, ball float group is slidably connected outside the hollow guide rod corresponding with magnetic switch, and input port and delivery outlet is respectively equipped with in the container cavity that ball float group two ends are corresponding, ball float group wherein comprises the empty boasting of the PP material be sleeved on successively on hollow guide rod, annular magnet and capping, annular magnet is folded between empty boasting and capping, and hollow guide rod between ball float group and valve body is set with power assistant spring.Empty boasting can adopt rubber, rubber and plastic or other plastic product to make, and empty boasting adopts PP material to make, and the cost of material is low, and not only machine-shaping is simple, and density is little, lightweight, and the reaction speed of perception liquid refrigerant is fast, and detection sensitivity is high; Be inlaid on empty boasting by capping by annular magnet, structure is simple, easy for installation; By arranging power assistant spring between ball float group and valve body, can avoid ball float group and hollow guide rod or valve body because of for a long time need not and stick together, improve the dependability of vapour-liquid sensor.
As more preferably, on described hollow guide rod, suit is fixed with rod coupling, and hollow guide rod is spun by rod coupling and is fixed on valve body, and between valve body and rod coupling, be folded with O RunddichtringO.Hollow guide rod is spun by rod coupling and is fixed on valve body, and structure is simple, and easy for installation, O RunddichtringO ensure that the sealing of container cavity, prevents refrigrant leakage
As preferably, described recycling machine gaseous state input port, the liquid input port of recycling machine, recycling machine gaseous state delivery outlet, the liquid delivery outlet of recycling machine are provided with filter screen adapter, filter screen adapter comprises one end and is screwed in union elbow on control valve, be connected with crossover sub at the other end of union elbow, between union elbow and crossover sub, be folded with filter screen.By arranging filter screen adapter on recycling machine gas, liquid input port and recycling machine gas, liquid delivery outlet, namely going out the impurity in cold-producing medium by the strainer filtering in filter screen adapter, ensureing that the pipeline in recycling machine is unobstructed further; Filter screen is folded in filter screen adapter, changes conveniently.
Blower fan can be arranged separately, as preferably, described blower fan is fixed on the rear end cap of compressor, speed increasing mechanism is provided with between compressor rotation shaft and fan shaft, speed increasing mechanism comprises the gear wheel be fixed on compressor rotation shaft and the pinion be fixed on fan shaft, gear wheel is mutually meshing with pinion, and blade sleeve is contained on fan shaft, and is provided with buffer stopper between fan blade and fan shaft.Fan shaft keeps linking by a pair intermeshing large and small gear and compressor rotation shaft, not only can blower fan be fixed on the rear end cap of compressor thus, save installing space, reduce energy consumption, and can rotation speed of fan be improved by the number of large and small gear than change, thus improve the air cooling effect of condenser, reduce the temperature rise of compressor further, improve the organic efficiency of recycling machine and promote the stable of its performance, delicate structure is compact; Make because fan blade mostly is plastic material, therefore it is very easily damaged because of shearing force effect in speed-raising and down speeding procedure, by arranging buffer stopper between fan blade and fan shaft, reducing the impulsive force between fan blade and rotating shaft, extending the service life of fan blade.
As preferably; the right shell body that described housing comprises left shell and docks with left shell; between left shell and the leading section of right shell body, be folded with guidance panel, guidance panel be provided with power switch, manually from clear switch, relay indicating light, startup knob, machine halt trouble relay indicating light, high pressure oil dumped pressure gauge, low pressure oil dumped pressure gauge and overload protective device.Housing is spliced by left and right housing, is not only convenient to the production and processing of housing, and easy to assembly; By arranging multiple switch and indicator lamp on guidance panel, be convenient to manual operation, simultaneously can the current duty of more intuitive understanding recycling machine by indicator lamp.
A using method for full-automatic four mouthfuls of recycling machines, comprises following sequential steps:
1) be connected in refrigeration system by recycling machine gaseous state input port and the liquid input port of recycling machine, recycling machine gaseous state delivery outlet and the liquid delivery outlet of recycling machine are connected on recycling can;
2) turn on the power switch, by starting knob, compressor rotates, and the cold-producing medium in refrigeration system enters recycling machine gaseous state input port and the liquid input port of recycling machine;
1., when gas-liquid sensor detects that cold-producing medium is liquid state, the magnetic switch that control circuit controls in gas-liquid sensor automatically disconnects, and the 5th, six, eight magnetic valves are connected and opened, and the liquid refrigerant in refrigeration system enters in recycling can;
2. when gas-liquid sensor detects that cold-producing medium is gaseous state, the magnetic switch that control circuit controls in gas-liquid sensor is automatically connected, the second, four, seven, eight magnetic valves are connected and are opened, and the gaseous refrigerant in refrigeration system enters condenser after compressor compression, then enters in recycling can;
3., in removal process, when internal system pressure reaches the specified operating pressure of low tension switch, control circuit is automatically converted to from clear pattern;
3) as need perform manually from clear pattern time, start manually from clear switch.
Take into account the special circumstances in practical work process, as because of the working time oversize, or to cause reaching the situations such as the specified operating pressure of low tension switch or piston ring damage because recycling machine service time is long, recycling machine can manually operate to be implemented from clear, manual from clear switch namely on start-up operation panel.Also be provided with three time delay modules at control circui simultaneously; three time delay modules are that when considering just start, amount of liquid refrigerant is few; may be there is the problem of frequent movement in gas-liquid sensor thus; consider again and first start shooting; rear unlatching intake line stop valve; may occur because input port hypotony causes low tension switch action thus; machine is made automatically to proceed to problem from clear mode of operation; contemplate when recycling machine terminates from clear pattern, the low tension switch action caused because moment compressor input port pressure is very low that may occur and the problem of shutting down simultaneously.
Therefore, full-automatic four mouthfuls of recycling machines of the present invention and using method thereof have following advantage:
1) gas-liquid sensor is housed, during liquid recovery, effectively can avoids liquid hit phenomenon;
2) reclaim, from clear whole-process automatic switching;
3) solve cold-producing medium when clear to backflow and destroy the problem of refrigeration system pressure to refrigeration system.
4) compressor is rotated by intermeshing large and small gear driven blower fan, improves rotation speed of fan, energy-conserving and environment-protective, good cooling results;
5) adopt single cylinder, twin-tub and multi-cylinder oil-free compressor, can be used for reclaiming multiple cold-producing medium, versatility is good.
accompanying drawing illustrates:
Fig. 1 is the structural representation after the present invention removes housing;
Fig. 2 is front view of the present invention;
Fig. 3 is the structural representation of control valve;
Fig. 4 is the structural representation of filter screen adapter;
Fig. 5 is the structural representation of blower fan;
Fig. 6 is the structural representation of gas-liquid sensor;
Gas circuit connection structure schematic diagram when Fig. 7 is the recovery of the present invention's liquid state;
Gas circuit connection structure schematic diagram when Fig. 8 is gaseous state of the present invention recovery;
Fig. 9 is the gas circuit connection structure schematic diagram of the present invention when clear;
Figure 10 is a kind of circuit theory diagrams of control circuit in the present invention.
detailed description of the invention:
Below by embodiment, and by reference to the accompanying drawings, technical scheme of the present invention is described in further detail.
Embodiment:
As shown in Figure 2; the full-automatic four mouthfuls of recycling machines of one of the present invention; comprise the housing docked by left shell 101 and right shell body 102; a block operations panel 21 is clamped between left shell 101 and the leading section of right shell body 102; guidance panel 21 towards oblique upper, on guidance panel 21 with the power switch be electrically connected with control circuit, manually from clear switch, relay indicating light, startup knob, machine halt trouble relay indicating light, high pressure oil dumped pressure gauge, low pressure oil dumped pressure gauge and overload protective device.As shown in Figure 1, control valve 9 is connected with by copper pipe road in housing, compressor 11, condenser 12 and blower fan 13, control valve 9 is wherein fixed on the rear side of guidance panel 21, as shown in Figure 3, and the recycling machine gaseous state input port 91 on control valve 9, the liquid input port 92 of recycling machine, recycling machine gaseous state delivery outlet 93, the liquid delivery outlet 94 of recycling machine extends to outside guidance panel 21, and in recycling machine gaseous state input port 91, the liquid input port 92 of recycling machine, recycling machine gaseous state delivery outlet 93 and the liquid delivery outlet 94 of recycling machine are connected with filter screen adapter respectively, as shown in Figure 4, filter screen adapter comprises union elbow 191 and is screwed in the crossover sub 192 of union elbow 191 one end, passage between union elbow 191 and crossover sub 192 clamps filter screen 193, the other end of union elbow 191 is screwed in the recycling machine gaseous state input port 91 of control valve 9 correspondence, the liquid input port 92 of recycling machine, on the liquid delivery outlet 94 of recycling machine gaseous state delivery outlet 93 and recycling machine, wherein recycling machine gaseous state input port 91 is connected with refrigeration system by filter screen adapter with the liquid input port 92 of recycling machine, recycling machine gaseous state delivery outlet 93 is connected with recycling can by filter screen adapter with the liquid delivery outlet 94 of recycling machine.The liquid input port 92 of recycling machine fills gas-liquid sensor 14, as shown in Figure 6, gas-liquid sensor 14 wherein comprises the valve body 141 of rectangular shape, extend internally in one end of valve body 141 container cavity of a formation cylinder, to be spun a rod coupling 148 by screw thread at the opening part of container cavity, and between the opposition end face of valve body 141 and rod coupling 148, an O RunddichtringO 149 is housed, an interspersed hollow guide rod 142 at the middle part of rod coupling 148, the outer ring surface seal welding of hollow guide rod 142 is on rod coupling 148, and the medial extremity of hollow guide rod 142 extends in container cavity, hollow guide rod 142 is made up of copper pipe, and to spin a guide rod plug at the medial extremity of copper pipe, at cavity internal fixtion magnetic switch 143 of hollow guide rod 142, wire on magnetic switch 143 extends from the outboard end outward opening of copper pipe, at the hollow guide rod 142 outer slip cap corresponding with magnetic switch 143, a ball float group is housed, input port and delivery outlet is respectively equipped with in the container cavity that ball float group two ends are corresponding, ball float group wherein comprises the capping 146 be sleeved on successively from inside to outside on hollow guide rod 142 medial extremity, the empty boasting 144 of annular magnet 145 and PP material, capping 146 is screwed on empty boasting 144 end face, and the outer face of capping 146 is mutually concordant with empty boasting 144 end face, in annular magnet 145 is clamped in annular groove that capping 146 and empty boasting 144 form, hollow guide rod 142 between capping 146 and rod coupling 148 is set with a power assistant spring 147, a counterbore is had at rod coupling 148 medial extremity, power assistant spring 147 is positioned at counterbore, an input port and a delivery outlet is had in the container cavity corresponding to ball float group outboard end, also a delivery outlet is had in the container cavity corresponding to ball float group medial extremity, valve body 141 has the input channel of conducting outside valve body 141 and output channel, input port is connected with input channel, delivery outlet is connected with output channel.As shown in Fig. 7,8,9, connecting line on connecting line on connecting line between control valve 9 and compressor 11, between compressor 11 and condenser 12 and between condenser 12 and control valve 9 is equipped with respectively the magnetic valve that several can control respective tube road break-make, each magnetic valve, compressor 11 and gas-liquid sensor 14 are electrically connected on the control circuitry and are controlled the break-make of corresponding pipeline by control circuit.Magnetic valve wherein comprises the first magnetic valve 1, second magnetic valve 2, 3rd magnetic valve 3, 4th magnetic valve 4, 5th magnetic valve 5, 6th magnetic valve 6, 7th magnetic valve 7 and the 8th magnetic valve 8, recycling machine gaseous state input port 91 is connected with the import of compressor 11 through the second magnetic valve 2, the outlet of compressor 11, one tunnel first magnetic valve 1 is connected with recycling machine gaseous state delivery outlet 93, another Lu Jing six magnetic valve 6 is connected with recycling machine gaseous state input port 91, a road the 7th magnetic valve 7 is also had to be connected with the import of condenser 12, the outlet of condenser 12 is connected with recycling machine gaseous state delivery outlet 93, the import of condenser 12 is again successively through the 3rd magnetic valve 3, 5th magnetic valve 5 is connected with recycling machine gaseous state delivery outlet 93, be connected by the import of pipeline with compressor 11 again between 3rd magnetic valve 3 and the 5th magnetic valve 5, the liquid input port 92 of recycling machine is connected through the liquid delivery outlet 94 of the 8th magnetic valve 8 and recycling machine, on the connecting line of gas-liquid sensor 14 wherein between the liquid input port 92 of recycling machine and the 8th magnetic valve 8, gas-liquid sensor 14 is connected to not only on the pipeline between the 3rd magnetic valve 3 and the 5th magnetic valve 5 after the import of the 4th magnetic valve 4 and compressor 11 is connected but also by pipeline.Connecting line between the liquid input port 92 of recycling machine and gas-liquid sensor 14 is equipped with the 4th check valve 15, connecting line between recycling machine gaseous state input port 91 and the second magnetic valve 2 is equipped with the second check valve 16, the input of the second check valve 16 is connected with the tie point of the 6th magnetic valve 6 with recycling machine gaseous state input port 91, the output of the second check valve 16 is connected with the second magnetic valve 2, and the flow direction of the second check valve 16 and the 4th check valve 15 is for flow to recycling machine from refrigeration system, connecting line between the liquid delivery outlet 94 of recycling machine and the 8th magnetic valve 8 is equipped with the 3rd check valve 17, connecting line between recycling machine gaseous state delivery outlet 93 and condenser 12 export is equipped with the first check valve 18, the flow direction of the first check valve 18 and the 3rd check valve 17 is for flow to recycling can from recycling machine, and in the import of compressor 11, low tension switch LP is housed, the outlet of compressor 11 is provided with high-voltage switch gear HP, and low tension switch LP, high-voltage switch gear HP is electrically connected on the control circuitry respectively.As shown in Figure 5, blower fan 13 is wherein fixed on the rear end cap of compressor 11, the rotating shaft of blower fan 13 and the shaft parallel of compressor 11, with speed increasing mechanism between compressor 11 rotating shaft and blower fan 13 rotating shaft, speed increasing mechanism comprises the gear wheel 201 be fixed in compressor 11 rotating shaft and the pinion 202 be fixed in blower fan 13 rotating shaft, gear wheel 201 is mutually meshing with pinion 202, fan blade 131 is sleeved in blower fan 13 rotating shaft, and between fan blade 131 and blower fan 13 rotating shaft, four block buffering blocks 132 being housed, buffer stopper 132 is made up of elastomeric material.As shown in Figure 10; communication power supply exports DC power supply through electronic transformer rectification; control circuit comprises a lot of relay; relay K A1, relay K A3 and relay K A4, relay K A5; the drive coil of relay K A5 is connected with DC power supply with after anti-excessive filled protection switch ofp series connection again, and DC power supply is connected with the drive end of relay K A1, relay K A3, relay K A4 through closed type magnetic switch KK.First electromagnetic valve coil S1 and the 3rd electromagnetic valve coil S3 is in parallel, and this parallel circuit is connected with communication power supply after connecting with the normally opened contact K switch A3-2 of relay K 3 again.Second electromagnetic valve coil S2, the 7th electromagnetic valve coil S7 and the 4th electromagnetic valve coil S4 are in parallel, the normally-closed contact K switch A3-1 of this parallel circuit and relay K A3, the normally opened contact K switch A1-1 of relay K A1 are linked to be series circuit, are connected with communication power supply.5th electromagnetic valve coil S5 and the 6th electromagnetic valve coil S6 is in parallel, and the normally-closed contact K switch A1-2 of this parallel circuit and relay K A1 is linked to be series circuit, is connected with communication power supply.The normally opened contact K switch A5-1 of relay K A5 is connected with communication power supply with after the 8th electromagnetic valve coil S8 series connection again.
During use, comprise following sequential steps:
1) be connected in refrigeration system by recycling machine gaseous state input port and the liquid input port of recycling machine, recycling machine gaseous state delivery outlet and the liquid delivery outlet of recycling machine are connected on recycling can;
2) turn on the power switch, by starting knob, compressor rotates, and the cold-producing medium in refrigeration system enters recycling machine gaseous state input port and the liquid input port of recycling machine;
1., when gas-liquid sensor detects that cold-producing medium is liquid state, the magnetic switch that control circuit controls in gas-liquid sensor automatically disconnects, and the 5th, six, eight magnetic valves are connected and opened, and the liquid refrigerant in refrigeration system enters in recycling can;
2. when gas-liquid sensor detects that cold-producing medium is gaseous state, the magnetic switch that control circuit controls in gas-liquid sensor is automatically connected, the second, four, seven, eight magnetic valves are connected and are opened, and the gaseous refrigerant in refrigeration system enters condenser after compressor compression, then enters in recycling can;
3., in removal process, when internal system pressure reaches the specified operating pressure of low tension switch, control circuit is automatically converted to from clear pattern;
3) as need perform manually from clear pattern time, start manually from clear switch.
As shown in Figure 7, be the liquid recovery operation state of recycling machine.When gas-liquid sensor detects that cold-producing medium is liquid state, the closed type magnetic switch of gas-liquid sensor internal disconnects, relay K A1 coil blackout, relay K A5 coil has electricity, now the 5th, the 6th and the 8th magnetic valve is connected, and other closed electromagnetic valve, liquid mode of operation indicator lamp LED5 is bright.Gas in recycling can is extracted out from recycling machine gaseous state delivery outlet, gases at high pressure are become after compressor compression, refrigeration system is flowed into through recycling machine gaseous state input port, under the effect of pressure reduction, the liquid refrigerant in refrigeration system flows directly into recycling can from recycling machine liquid input port the 4th check valve, the 8th magnetic valve, the 3rd check valve, the liquid delivery outlet of recycling machine.
As shown in Figure 8, be recycling machine gaseous state recovery operation state.When gas-liquid sensor detects that cold-producing medium is gaseous state (or after liquid refrigerant has extracted), the closed type magnetic switch of gas-liquid sensor internal is connected, relay K A1 coil electricity, the second, the 4th, the 7th and the 8th magnetic valve is connected, all the other closed electromagnetic valves, LED4 is bright for gaseous state mode of operation indicator lamp.Gaseous refrigerant (may have a small amount of liquid refrigerant) in refrigeration system enters compressor from the liquid input port of recycling machine, recycling machine gaseous state input port, flows into recycling can after compression by condenser cooling through the first check valve from recycling machine gaseous state delivery outlet.
As shown in Figure 9, for recycling machine is from clear duty.When after recovery a period of time, when refrigeration system internal pressure reaches the specified operating pressure of low tension switch LP, relay K A2, relay K A3 obtain electric, proceed to from clear pattern, now the first, the 3rd and the 8th magnetic valve is connected, and all the other closed electromagnetic valves are bright from clear mode of operation indicator lamp LED6.The residual cold-producing medium in recycling machine inside (comprising condenser and internal pipeline) flows into recycling can from recycling machine gaseous state delivery outlet after compressor compression.Because this recycling machine is built-in with the second, the 4th check valve, can prevent cold-producing medium when clear from flowing back in refrigeration system.Come to relay signal by the action of low tension switch, thus control the break-make of corresponding magnetic valve, realize the change of path, reach from clear order.All processes completes automatically, does not need manual operation.
The present invention has good security performance.In the whole course of work, when outlet side pressure reaches the rated pressure value of high-voltage switch gear HP, high-voltage switch gear disconnects, and relay K power-off, compressor M1 shuts down, and HT pilot LED1 is bright.When recycling can inner refrigerant reaches 80% of nominal volume, protection switch ofp disconnects, relay K A5 power-off, relay K power-off, and compressor M1 shuts down, and LED3 is bright for OFP indicator lamp.After certainly settling accounts bundle, relay K A4 power-off, relay K power-off, compressor M1 shuts down, and certainly settles accounts bundle indicator lamp LED2 bright.
The present invention has also fully taken into account the special circumstances in practical work process, as because of the working time oversize, or because causing the specified operating pressure or piston ring damage etc. that can not reach low tension switch service time more for a long time, now can manually from clear, by manually just passable from clear switch S B3, but now do not work from clear mode of operation indicator lamp LED6.
Also be provided with three time delay modules in control circuit of the present invention, realized by 555 delay chips, when both having taken into full account firm start, seldom, may there is the problem of frequent movement in gas-liquid sensor to amount of liquid refrigerant; Consider that again presumable client first starts shooting, rear unlatching intake line stop valve may occur that machine proceeds to the problem from clear mode of operation because input port hypotony causes low tension switch action; Also take into account when reclaim terminate may to occur when turning from clear pattern cause low tension switch action and the out-of-work problem of machine because moment compressor input port pressure is very low.
Specific embodiment described herein is only to design of the present invention explanation for example.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Claims (8)
1. full-automatic four mouthfuls of recycling machines, comprise housing and be located at the control valve (9) in housing, compressor (11), condenser (12) and blower fan (13), control valve (9) is provided with recycling machine gaseous state input port (91), the liquid input port (92) of recycling machine, recycling machine gaseous state delivery outlet (93), the liquid delivery outlet (94) of recycling machine, recycling machine gaseous state input port (91) is connected with refrigeration system with the liquid input port (92) of recycling machine, recycling machine gaseous state delivery outlet (93) is connected with recycling can with the liquid delivery outlet (94) of recycling machine, it is characterized in that: on the liquid input port (92) of described recycling machine, be provided with gas-liquid sensor (14), and on connecting line between control valve (9) and compressor (11), on connecting line between compressor (11) and condenser (12), and the connecting line between condenser (12) and control valve (9) be provided with several can the magnetic valve of control piper break-make, magnetic valve and gas-liquid sensor (14) are electrically connected on the control circuitry and are controlled the break-make of corresponding pipeline by control circuit, described gas-liquid sensor (14) comprises valve body (141) and one end and is encapsulated in hollow guide rod (142) in valve body (141) container cavity, be provided with magnetic switch (143) corresponding in the hollow guide rod (142) in valve body (141), ball float group is slidably connected outside the hollow guide rod (142) corresponding with magnetic switch (143), and input port and delivery outlet is respectively equipped with in the container cavity that ball float group two ends are corresponding, ball float group wherein comprises the empty boasting (144) of the PP material be sleeved on successively on hollow guide rod (142), annular magnet (145) and capping (146), annular magnet (145) is folded between empty boasting (144) and capping (146), and hollow guide rod (142) between ball float group and valve body (141) is set with power assistant spring (147), be provided with low tension switch LP in the import of described compressor (11), the outlet of compressor (11) is provided with high-voltage switch gear HP, and low tension switch LP, high-voltage switch gear HP are electrically connected on the control circuitry respectively.
2. full-automatic four mouthfuls of recycling machines according to claim 1, it is characterized in that: described magnetic valve comprises the first magnetic valve (1), second magnetic valve (2), 3rd magnetic valve (3), 4th magnetic valve (4), 5th magnetic valve (5), 6th magnetic valve (6), 7th magnetic valve (7) and the 8th magnetic valve (8), recycling machine gaseous state input port (91) is connected through the import of the second magnetic valve (2) with compressor (11), the outlet of compressor (11), one tunnel first magnetic valve (1) is connected with recycling machine gaseous state delivery outlet (93), another Lu Jing six magnetic valve (6) is connected with recycling machine gaseous state input port (91), a road the 7th magnetic valve (7) is also had to be connected with the import of condenser (12), the outlet of condenser (12) is connected with recycling machine gaseous state delivery outlet (93), the import of condenser (12) is again successively through the 3rd magnetic valve (3), 5th magnetic valve (5) is connected with recycling machine gaseous state delivery outlet (93), be connected by the import of pipeline with compressor (11) again between 3rd magnetic valve (3) and the 5th magnetic valve (5), the liquid input port (92) of recycling machine is connected through the liquid delivery outlet (94) of the 8th magnetic valve (8) and recycling machine, gas-liquid sensor (14) is located on the connecting line between the liquid input port (92) of recycling machine and the 8th magnetic valve (8), gas-liquid sensor (14) is connected to not only on the pipeline between the 3rd magnetic valve (3) and the 5th magnetic valve (5) after the import of the 4th magnetic valve (4) and compressor (11) is connected but also by pipeline, compressor (11) is also electrically connected on the control circuitry.
3. full-automatic four mouthfuls of recycling machines according to claim 1 and 2, it is characterized in that: the connecting line between the liquid input port (92) of described recycling machine and gas-liquid sensor (14) is provided with the 4th check valve (15), connecting line between recycling machine gaseous state input port (91) and the second magnetic valve (2) is provided with the second check valve (16), the input of the second check valve (16) is connected with the tie point of recycling machine gaseous state input port (91) with the 6th magnetic valve (6), the output of the second check valve (16) is connected with the second magnetic valve (2), and the second check valve (16) and arranging of the 4th check valve (15) flow to as to flow to recycling machine from refrigeration system, connecting line between the liquid delivery outlet (94) of recycling machine and the 8th magnetic valve (8) is provided with the 3rd check valve (17), connecting line between recycling machine gaseous state delivery outlet (93) and condenser (12) outlet is provided with the first check valve (18), and the first check valve (18) and arranging of the 3rd check valve (17) flow to as to flow to recycling can from recycling machine.
4. full-automatic four mouthfuls of recycling machines according to claim 1, it is characterized in that: be fixed with rod coupling (148) at the upper suit of described hollow guide rod (142), hollow guide rod (142) is spun by rod coupling (148) and is fixed on valve body (141), and is folded with O RunddichtringO (149) between valve body (141) and rod coupling (148).
5. full-automatic four mouthfuls of recycling machines according to claim 1 and 2, it is characterized in that: on described recycling machine gaseous state input port (91), the liquid input port (92) of recycling machine, recycling machine gaseous state delivery outlet (93), the liquid delivery outlet (94) of recycling machine, be provided with filter screen adapter, filter screen adapter comprises one end and is screwed in union elbow (191) on control valve (9), be connected with crossover sub (192) at the other end of union elbow (191), between union elbow (191) and crossover sub (192), be folded with filter screen (193).
6. full-automatic four mouthfuls of recycling machines according to claim 1 and 2, it is characterized in that: described blower fan (13) is fixed on the rear end cap of compressor (11), speed increasing mechanism is provided with between compressor (11) rotating shaft and blower fan (13) rotating shaft, speed increasing mechanism comprises the gear wheel (201) be fixed in compressor (11) rotating shaft and the pinion (202) be fixed in blower fan (13) rotating shaft, gear wheel (201) is mutually meshing with pinion (202), fan blade (131) is sleeved in blower fan (13) rotating shaft, and buffer stopper (132) is provided with between fan blade (131) and blower fan (13) rotating shaft.
7. full-automatic four mouthfuls of recycling machines according to claim 1 and 2; it is characterized in that: the right shell body (102) that described housing comprises left shell (101) and docks with left shell (101); between left shell (101) and the leading section of right shell body (102), be folded with guidance panel (21), guidance panel (21) be provided with power switch, manually from clear switch, relay indicating light, startup knob, machine halt trouble relay indicating light, high pressure oil dumped pressure gauge, low pressure oil dumped pressure gauge and overload protective device.
8. the using method of a kind of full-automatic four mouthfuls of recycling machines according to claim 1, is characterized in that: comprise following sequential steps:
1) be connected in refrigeration system by recycling machine gaseous state input port (91) and the liquid input port (92) of recycling machine, recycling machine gaseous state delivery outlet (93) and the liquid delivery outlet (94) of recycling machine are connected on recycling can;
2) turn on the power switch, by starting knob, compressor (11) rotates, and the cold-producing medium in refrigeration system enters recycling machine gaseous state input port (91) and the liquid input port (92) of recycling machine;
1. when gas-liquid sensor (14) detects that cold-producing medium is liquid state, the magnetic switch (143) that control circuit controls in gas-liquid sensor (14) automatically disconnects, five, six, eight magnetic valves (5,6,8) are connected and are opened, and the liquid refrigerant in refrigeration system enters in recycling can;
2. when gas-liquid sensor (14) detects that cold-producing medium is gaseous state, the magnetic switch (143) that control circuit controls in gas-liquid sensor (14) is automatically connected, the second, four, seven, eight magnetic valves (2,4,7,8) are connected and are opened, gaseous refrigerant in refrigeration system enters condenser (12) after compressor (11) compression, then enters in recycling can;
3., in removal process, when internal system pressure reaches the specified operating pressure of low tension switch, control circuit is automatically converted to from clear pattern;
3) as need perform manually from clear pattern time, start manually from clear switch.
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| CN201210175836.6A CN102706052B (en) | 2012-05-31 | 2012-05-31 | Full-automatic four-port recycling machine and using method thereof |
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| CN107606833A (en) * | 2017-09-21 | 2018-01-19 | 天津大学 | Low boiling organic working medium fills and retracting device |
| CN108534409B (en) * | 2018-03-24 | 2020-06-05 | 山东福瑞德冷冻空调有限公司 | Air conditioner refrigerant recovery device |
| CN112344607B (en) * | 2020-10-13 | 2022-04-15 | 浙江飞越机电有限公司 | Intelligent control method for obtaining optimal recovery speed of refrigerant recovery machine |
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