CN202630541U - Fully automatic four-mouth recycling machine - Google Patents

Abstract

The utility model discloses a recycling machine, provides a fully automatic four-mouth recycling machine which is simple in operation and can avoid a liquid hammer phenomenon when liquid state recycling is carried out, and recycling and self-cleaning mode can automatically switch in a whole course, solves the technical problems that in the prior art, system halted, burning of a motor and an overload protector and the like which are caused by the facts that the liquid hammer phenomenon easily occurs and the whole operation is completed by hand exist, and operation is time-consuming and labor-consuming, security incidents are easily triggered and the like. The recycling machine comprises a shell body, a control valve, a compressor, a condenser and a draught fan, wherein the control valve, the compressor, the condenser and the draught fan are arranged inside the shell body. A recycling machine gas liquid state input port connected with a refrigerating system and a recycling machine gas liquid state output port connected with the refrigerating system are further arranged on the control valve. A gas-liquid sensor is arranged on the recycling machine gas liquid state input port, a plurality of magnetic valves capable of controlling on-off of pipelines are arranged on an input pipeline and an output pipeline of the compressor, and the magnetic valves and the gas-liquid sensor are electrically connected on a control circuit and control on-off of corresponding pipelines through the control circuit.

Description

Full-automatic four-hole reclaims machine

Technical field

The utility model relates to a kind of refrigerant-recovery machine, can avoid liquid hit phenomenon when relating in particular to a kind of liquid the recovery, reclaims and reclaims machine from the full-automatic four-hole that clear pattern can whole-process automatic switching.

Background technology

Rising steadily of the reinforcement of Along with people's environmental consciousness and cold-producing medium price; The refrigerant-recovery machine begins popularization and application day by day; But the following problem of existing refrigerant-recovery machine ubiquity: 1. work as recovery machine input port liquid refrigerant more for a long time, be prone to the phenomenon that connects copper pipe shake severity, i.e. liquid hit phenomenon; And very easily causing deadlock, burn-down of electric motor, overload protective device, burns etc. liquid hit phenomenon; And when a large amount of liquid refrigerants get into compressor, also very easily cause the compressor piston ring to damage, reduced the service life of the machine that reclaims; 2. when clear, need manual operation when the recovery machine carries out gas, liquid recovery reaches, not only waste time and energy, and very easily because of maloperation causes human accident, direct threats people's the security of the lives and property.

Chinese patent discloses a kind of environment-friendly type cooling medium and has reclaimed 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 outer water tank of the water inlet of heat exchanger, water out and heat exchanger is connected to form a water-flow circuit; Delivery side of pump is connected with the compressor air suction mouth, and exhaust outlet of compressor is connected with the refrigerant inlet of heat exchanger, and the refrigerant outlet of heat exchanger is connected with reservoir; Reservoir is connected with filter, and filter is connected with returnable bottle.This device is realized the fast cooling of cold-producing medium through heat exchanger is set, and with the raising organic efficiency, but works as the input port liquid refrigerant more for a long time; Liquid hit phenomenon equally very easily appears; And substantial length of operation is manually, and therefore same existence operation is wasted time and energy, and is prone to cause security incident; And the deadlock that is caused by liquid hit phenomenon, burn-down of electric motor, overload protective device burn etc., reduces the problems such as service life of recovery machine.

Summary of the invention

The utility model has mainly provided a kind of simple to operate, can avoid liquid hit phenomenon during liquid the recovery, and reclaims and reclaim machine and method for using thereof from the full-automatic four-hole that clear pattern can whole-process automatic switching; Solved the liquid hit phenomenon that is prone to that exists in the prior art; Thereby cause that deadlock, burn-down of electric motor, overload protective device are burnt etc., and substantial length of operation is manually, operation is wasted time and energy; Be prone to cause security incident, the technical problem in the service life of reduction recovery machine etc.

The above-mentioned technical problem of the utility model mainly is able to solve through following technical proposals: a kind of full-automatic four-hole reclaims machine; Comprise housing and be located at control valve, compressor, condenser and the blower fan in the housing; On control valve, be provided with recovery machine gaseous state input port, the liquid input port of recovery machine, recovery machine gaseous state delivery outlet, the liquid delivery outlet of recovery machine; Recovery machine gaseous state input port links to each other with refrigeration system with the liquid input port of recovery machine; Recovery machine gaseous state delivery outlet links to each other with recycling can with the liquid delivery outlet of recovery machine; On the liquid input port of said recovery machine, be provided with the gas-liquid sensor; And but at the magnetic valve that is provided with several control piper break-makes on the connecting line on the connecting line of control valve and compressor chamber, between compressor and condenser and on the connecting line between condenser and control valve, magnetic valve and gas-liquid sensor electrical are connected the break-make of controlling corresponding pipeline on the control circuit and through control circuit.Through the gas-liquid sensor being set in the liquid input port of recovery machine, several magnetic valves are set on each connecting line, gas-liquid sensor and magnetic valve all are connected on the control circuit again; And have several relays in the control circuit, and the inside of gas-liquid sensor has the closed type magnetic switch, and the closed type magnetic switch is the break-make of control relay coil again; Detect cold-producing medium when liquid when the gas-liquid sensor in the removal process, the closed type magnetic switch breaks off, when detecting cold-producing medium and be gaseous state; The closed type magnetic switch is connected, and each contact switch of relay links to each other with the coil of each magnetic valve again accordingly, thereby controls the break-make of each magnetic valve; Promptly control the break-make of each pipeline, gaseous state recovery, liquid recovery and clear are certainly promptly accomplished in recovery and the certainly clear whole-process automatic switching of pattern automatically; Whole process need not manually-operated, and is simple to operate, time saving and energy saving; Because the gas-liquid sensor can detect the gas-liquid state of cold-producing medium automatically, and through the switching of control circuit control corresponding solenoid valve, thereby avoid the recovery machine liquid hit phenomenon to occur; Deadlock, burn-down of electric motor, the overload protective device of also having avoided being caused by liquid hit phenomenon burns, compressor piston ring breakage etc.; Improve the service behaviour of the machine that reclaims, and guaranteed to reclaim the long operate as normal of function, prolonged the service life of the machine that reclaims.

As preferably; Said magnetic valve comprises first magnetic valve, second magnetic valve, the 3rd magnetic valve, the 4th magnetic valve, the 5th magnetic valve, the 6th magnetic valve, the 7th magnetic valve and the 8th magnetic valve; The import of recovery machine gaseous state input port second magnetic valve and compressor links to each other; The outlet of compressor, one road warp, first magnetic valve links to each other with the machine of recovery gaseous state delivery outlet, and another Lu Jingdi six magnetic valves link to each other with the machine of recovery gaseous state input port; Also have one tunnel import to link to each other through the 7th magnetic valve and condenser; The outlet of condenser links to each other with the machine of recovery gaseous state delivery outlet, and the import of condenser links to each other through the 3rd magnetic valve, the 5th magnetic valve and the machine of recovery gaseous state delivery outlet again successively, and the import of passing through pipeline and compressor between the 3rd magnetic valve and the 5th magnetic valve again links to each other; The liquid input port of recovery machine the 8th magnetic valve links to each other with the liquid delivery outlet of recovery machine; The gas-liquid sensor is located on the connecting line between liquid input port of recovery machine and the 8th magnetic valve, and the gas-liquid sensor is connected after the import of the 4th magnetic valve and compressor is continuous but also through pipeline on the pipeline between the 3rd magnetic valve and the 5th magnetic valve not only, and compressor also is connected electrically on the control circuit.When the gas-liquid sensor detected cold-producing medium for liquid state, the closed type magnetic switch in the sensor broke off, and this moment, the 5th, six, eight magnetic valves were connected; Other closed electromagnetic valve; Gas in the recycling can is extracted out from the gaseous state mouth of recycling can, after compressor compresses, become gases at high pressure, from the gaseous state mouth inflow refrigeration system of refrigeration system; Under the effect of pressure reduction, the liquid refrigeration system in the refrigeration system flows directly into recycling can from the liquid mouthful of liquid mouth through recycling can of refrigeration system; When the gas-liquid sensor detects cold-producing medium and is gaseous state; The magnetic switch of gas-liquid sensor internal is connected; The relay coil energising, second, four, seven, eight magnetic valves are connected, all the other closed electromagnetic valves; Gaseous refrigerant in the refrigeration system gets into compressor from the gas that reclaims machine, liquid input port, and the compression back flows into recycling can through condenser cooling back from the gaseous state delivery outlet that reclaims machine; After reclaiming a period of time, when promptly intrasystem pressure reached rated pressure, the recovery machine changed over to from clear pattern; First and third, eight magnetic valves are connected, all the other closed electromagnetic valves, and the inner residual cold-producing medium gaseous state mouth from recycling can after compressor compresses of recovery machine flows into recycling can; Whole process is controlled the break-make of the magnetic valve on each pipeline automatically through relay signal, thereby realizes the variation of path, reaches to reclaim and from clear purpose; Simple in structure; Whole process need not manual operation, and automaticity is high, and it is time saving and energy saving to operate.

As preferably; On the connecting line between liquid input port of said recovery machine and gas-liquid sensor, be provided with the 4th check valve; On the connecting line that reclaims between the machine gaseous state input port and second magnetic valve, be provided with second check valve; The input of second check valve links to each other with the tie point of the 6th magnetic valve with the machine of recovery gaseous state input port, and the output of second check valve links to each other with second magnetic valve, and being provided with of second check valve and the 4th check valve flows to to flow to the recovery machine from refrigeration system; On the connecting line between liquid delivery outlet of recovery machine and the 8th magnetic valve, be provided with the 3rd check valve; On the connecting line that reclaims between machine gaseous state delivery outlet and condensator outlet, be provided with first check valve, being provided with of first check valve and the 3rd check valve flows to to flow to recycling can from the recovery machine.Second check valve and the 4th check valve can prevent that cold-producing medium residual in the recovery machine from destroying the pressure of refrigeration system in clear process, backflowing to refrigeration system; First check valve and the 3rd check valve can prevent that the cold-producing medium in the recycling can from backflowing to the recovery machine.

As preferably, be provided with low tension switch LP in the import of said compressor, the outlet of compressor is provided with high-voltage switch gear HP, and low tension switch LP, high-voltage switch gear HP are connected electrically on the control circuit respectively.Change according to the machine of recovery pressure inside; The control circuit actuating signal is given in switching through the low tension switch inner contact, and the recovery machine is changed over to from clear pattern automatically, and is too high or the machine of recovery outlet side passage is obstructed when causing the outlet side hypertonia when the recycling can internal pressure; Or when clear pattern finishes; The control circuit actuating signal is given in switching through the high-voltage switch gear inner contact, and compressor quits work, and makes system safe and reliable to operation.

As preferably; Said gas-liquid sensor comprises that a valve body and an end are encapsulated in the hollow guide rod in the valve body container cavity; In corresponding to the hollow guide rod in the valve body, be provided with magnetic switch; Outside the hollow guide rod corresponding with magnetic switch, slidely connect the ball float group, and in the corresponding container cavity in ball float group two ends, be respectively equipped with input port and delivery outlet, ball float group wherein comprises empty boasting, annular magnet and the capping of the PP material that is sleeved on successively on the hollow guide rod; Annular magnet is folded between empty boasting and capping, and on the hollow guide rod between ball float group and the valve body, is set with power assistant spring.Empty boasting can adopt rubber, rubber and plastic or other plastic product to process, and empty boasting adopts the PP material to process, and the cost of material is low, and not only machine-shaping is simple, and density is little, and is in light weight, and the reaction speed of perception liquid refrigerant is fast, and detection sensitivity is high; Through capping annular magnet is inlaid on the empty boasting, simple in structure, easy for installation; Through between ball float group and valve body, power assistant spring being set, can avoid ball float group and hollow guide rod or valve body because of sticking together for a long time, improved the dependability of vapour-liquid sensor.

As more preferably, suit is fixed with rod coupling on said hollow guide rod, and hollow guide rod spins through rod coupling and is fixed on the valve body, and between valve body and rod coupling, is folded with the O RunddichtringO.Hollow guide rod spins through rod coupling and is fixed on the valve body, and is simple in structure, easy for installation, and the O RunddichtringO has been guaranteed the sealing of container cavity, prevents that cold-producing medium from leaking

As preferably; On said recovery machine gaseous state input port, the liquid input port of recovery machine, recovery machine gaseous state delivery outlet, the liquid delivery outlet of recovery machine, be provided with the filter screen adapter; The filter screen adapter comprises that an end is screwed in the union elbow on the control valve; The other end at union elbow is connected with crossover sub, between union elbow and crossover sub, is folded with filter screen.Through on the machine of recovery gas, liquid input port and the machine of recovery gas, liquid delivery outlet, the filter screen adapter being set, can go out the impurity in the cold-producing medium through the strainer filtering in the filter screen adapter, guarantee that further the pipeline in the recovery machine is unobstructed; Filter screen is folded in the filter screen adapter, changes conveniently.

Blower fan can be provided with separately; As preferably, said blower fan is fixed on the rear end cap of compressor, between compressor rotation shaft and fan shaft, is provided with speed increasing mechanism; Speed increasing mechanism comprises and is fixed on the gear wheel on the compressor rotation shaft and is fixed on the pinion on the fan shaft; Gear wheel is mutually meshing with pinion, and fan blade is sleeved on the fan shaft, and between fan blade and fan shaft, is provided with buffer stopper.Fan shaft keeps interlock through a pair of intermeshing large and small gear and compressor rotation shaft, not only can blower fan be fixed on the rear end cap of compressor thus, practices thrift installing space; Cut down the consumption of energy; And can improve rotation speed of fan than changing through the number of large and small gear, thus improve the air cooling effect of condenser, further reduce the temperature rise of compressor; Improve the organic efficiency of recovery machine and promote the stable of its performance, delicate structure is compact; Process because mostly fan blade is plastic material, so it is very easily damaged because of the shearing force effect in speed-raising and reduction of speed process, through between fan blade and fan shaft, buffer stopper being set, reduces the impulsive force between fan blade and rotating shaft, prolongs the service life of fan blade.

As preferably; Said housing comprises left shell and the right shell body that docks with left shell; Between the leading section of left shell and right shell body, be folded with guidance panel, on guidance panel, be provided with power switch, manual 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, not only is convenient to the production and processing of housing, and easy to assembly; Through multiple switch and indicator lamp are set on guidance panel, be convenient to manual operation, can more intuitive understanding reclaim the machine current working state through indicator lamp simultaneously.

The special circumstances in the practical work process have been considered; As because of the working time oversize; Or because of reclaiming the long specified operating pressure that causes to reach low tension switch or situation such as piston ring damage machine service time; The recovery machine can be implemented from clear through manual operation, i.e. manually getting final product from clear switch on the start-up operation panel.Also be provided with three time delay modules in circuit control simultaneously; Three time delay modules are that amount of liquid refrigerant is few when considering firm start; The problem of frequent movement possibly appear in the gas-liquid sensor thus, considers first start again, and the intake line stop valve is opened in the back; Possibly occur thus causing the low tension switch action because of the input port hypotony; Make machine change the problem from clear mode of operation automatically over to, also considered simultaneously when the recovery machine finishes from clear pattern, what possibly occur moves the problem of shutting down because of the very low low tension switch that causes of moment compressor input port pressure.

Therefore, the full-automatic four-hole recovery machine and the method for using thereof of the utility model have following advantage:

1) the gas-liquid sensor is housed, can effectively avoids liquid hit phenomenon during liquid the recovery;

2) reclaim, from clear whole-process automatic switching;

3) having solved when clear cold-producing medium backflows and destroys the problem of refrigeration system pressure to refrigeration system.

4) compressor rotates through intermeshing large and small gear driven blower fan, has improved rotation speed of fan, energy-conserving and environment-protective, good cooling results;

5) adopt single cylinder, twin-tub and the multi-cylinder oilless machine that contracts, can be used for reclaiming multiple cold-producing medium, versatility is good.

Description of drawings:

Fig. 1 is the structural representation after the utility model removes housing;

Fig. 2 is the front view of the utility model;

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 syndeton sketch map when Fig. 7 is the recovery of the utility model liquid state;

Gas circuit syndeton sketch map when Fig. 8 is the recovery of the utility model gaseous state;

Fig. 9 is the gas circuit syndeton sketch map of the utility model when clear;

Figure 10 is a kind of circuit theory diagrams of control circuit in the utility model.

The specific embodiment:

Pass through embodiment below, and combine accompanying drawing, do further bright specifically the technical scheme of the utility model.

Embodiment:

As shown in Figure 2; A kind of full-automatic four-hole of the utility model reclaims machine; Comprise by left shell 101 housing that 102 butt joints form with right shell body; Between the leading section of left shell 101 and right shell body 102, clamp a block operations panel 21; Guidance panel 21 has the power switch that is electrically connected with control circuit, manual certainly 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 towards oblique upper on guidance panel 21.As shown in Figure 1; In housing, be connected with control valve 9, compressor 11, condenser 12 and blower fan 13 through the copper pipe road; Control valve 9 wherein is fixed on the rear side of guidance panel 21; As shown in Figure 3; And the recovery machine gaseous state input port 91 on the control valve 9, the liquid input port 92 of recovery machine, recovery machine gaseous state delivery outlet 93, the liquid delivery outlet 94 of recovery machine extend to outside the guidance panel 21; And on the machine of recovery gaseous state input port 91, the liquid input port 92 of recovery machine, recovery machine gaseous state delivery outlet 93 and the liquid delivery outlet 94 of recovery machine, be connected with the filter screen adapter respectively; As shown in Figure 4; The filter screen adapter comprises union elbow 191 and is screwed in the crossover sub 192 of union elbow 191 1 ends, on the passage between union elbow 191 and the crossover sub 192, has clamped filter screen 193, and the other end of union elbow 191 is screwed on the liquid input port 92 of recovery machine gaseous state input port 91, recovery machine, recovery machine gaseous state delivery outlet 93 and the liquid delivery outlet 94 of recovery machine of control valve 9 correspondences; Wherein reclaim machine gaseous state input port 91 and link to each other with refrigeration system through the filter screen adapter, reclaim machine gaseous state delivery outlet 93 and link to each other with recycling can through the filter screen adapter with the liquid delivery outlet 94 of recovery machine with the liquid input port 92 of recovery machine.Dress gas-liquid sensor 14 on the liquid input port 92 of recovery machine, as shown in Figure 6, gas-liquid sensor 14 wherein comprises the valve body 141 of rectangular shape; Extend internally at an end of valve body 141 and to form the container cavity of a cylinder; Through the screw thread rod coupling 148 that spins, and an O RunddichtringO 149 is housed at the opening part of container cavity between the opposition end face of valve body 141 and rod coupling 148, interts a hollow guide rod 142 at the middle part of rod coupling 148; The outer ring surface seal weld of hollow guide rod 142 is connected on the rod coupling 148; And the medial extremity of hollow guide rod 142 extends in the container cavity, and hollow guide rod 142 is processed by copper pipe, and at the medial extremity of the copper pipe guide rod plug that spins; Fixing magnetic switch 143 in the cavity of hollow guide rod 142; Lead on the magnetic switch 143 stretches out from the outboard end opening of copper pipe, and slip cap is equipped with a ball float group outside the hollow guide rod 142 corresponding with magnetic switch 143, in the corresponding container cavity in ball float group two ends, is respectively equipped with input port and delivery outlet; Ball float group wherein comprises the empty boasting 144 that is sleeved on capping 146, annular magnet 145 and PP material on hollow guide rod 142 medial extremitys from inside to outside successively; Capping 146 is screwed on empty boasting 144 end faces, and the outer face of capping 146 and empty boasting 144 end face flush, and annular magnet 145 is clamped in the annular groove that capping 146 and empty boasting 144 constituted; Power assistant spring 147 of suit on the hollow guide rod 142 between capping 146 and the rod coupling 148; Have a counterbore at rod coupling 148 medial extremitys, power assistant spring 147 is positioned at counterbore, in the container cavity corresponding to ball float group outboard end, has an input port and a delivery outlet; In corresponding to the container cavity of ball float group medial extremity, also have a delivery outlet; Having input channel and the output channel of conducting outside valve body 141 on the valve body 141, the input port links to each other with input channel, and delivery outlet links to each other with output channel.Like Fig. 7,8, shown in 9; On the connecting line of 11 on control valve 9 and compressor, on the connecting line of 12 of compressor 11 and condensers and on the connecting line of 9 of condenser 12 and control valves the magnetic valve that several can control respective tube road break-make is being housed respectively, each magnetic valve, compressor 11 and gas-liquid sensor 14 are connected electrically in the break-make of controlling corresponding pipeline on the control circuit and through control circuit.Magnetic valve wherein comprises first magnetic valve 1, second magnetic valve 2, the 3rd magnetic valve 3, the 4th magnetic valve 4, the 5th magnetic valve 5, the 6th magnetic valve 6, the 7th magnetic valve 7 and the 8th magnetic valve 8; Recovery machine gaseous state input port 91 links to each other through the import of second magnetic valve 2 and compressor 11; The outlet of compressor 11; One road warp, first magnetic valve 1 links to each other with the machine of recovery gaseous state delivery outlet 93; Another Lu Jingdi six magnetic valves 6 link to each other with the machine of recovery gaseous state input port 91; Also have one tunnel import to link to each other through the 7th magnetic valve 7 and condenser 12; The outlet of condenser 12 links to each other with the machine of recovery gaseous state delivery outlet 93; The import of condenser 12 links to each other through the 3rd magnetic valve 3, the 5th magnetic valve 5 and the machine of recovery gaseous state delivery outlet 93 again successively, between the 3rd magnetic valve 3 and the 5th magnetic valve 5 again the import through pipeline and compressor 11 link to each other, recovery machine liquid state input port 92 warp the 8th magnetic valves 8 and recovery machine liquid state delivery outlet 94 link to each other; Gas-liquid sensor 14 wherein is on the connecting line between liquid input port 92 of recovery machine and the 8th magnetic valve 8, and gas-liquid sensor 14 is connected after the import of the 4th magnetic valve 4 and compressor 11 is continuous but also through pipeline on the pipeline between the 3rd magnetic valve 3 and the 5th magnetic valve 5 not only.On the connecting line of 14 of the liquid input port 92 of recovery machine and gas-liquid sensors, the 4th check valve 15 is housed; On the connecting line that reclaims 2 of the machine gaseous state input port 91 and second magnetic valves, second check valve 16 is housed; The input of second check valve 16 links to each other with the tie point of the 6th magnetic valve 6 with the machine of recovery gaseous state input port 91; The output of second check valve 16 links to each other with second magnetic valve 2; And the flow direction of second check valve 16 and the 4th check valve 15 is equipped with the 3rd check valve 17 for to flow to the recovery machine from refrigeration system on the connecting line between liquid delivery outlet 94 of recovery machine and the 8th magnetic valve 8, on the connecting line that reclaims between machine gaseous state delivery outlet 93 and condenser 12 outlets, first check valve 18 is housed; The flow direction of first check valve 18 and the 3rd check valve 17 is for to flow to recycling can from the recovery 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 are connected electrically on the control circuit respectively.As shown in Figure 5; Blower fan 13 wherein is fixed on the rear end cap of compressor 11; The shaft parallel of the rotating shaft of blower fan 13 and compressor 11 has speed increasing mechanism between compressor 11 rotating shafts and blower fan 13 rotating shafts, speed increasing mechanism comprises and is fixed on the gear wheel 201 in compressor 11 rotating shafts and is fixed on the pinion 202 in blower fan 13 rotating shafts; Gear wheel 201 is mutually meshing with pinion 202; Fan blade 131 is sleeved in blower fan 13 rotating shafts, and between fan blade 131 and blower fan 13 rotating shafts, four block buffering pieces 132 is housed, and buffer stopper 132 is processed by elastomeric material.Shown in figure 10; Communication power supply is through electronic transformer rectification output dc power supply; Control circuit comprises a lot of relays; Relay K A1, relay K A3 and relay K A4, relay K A5, the drive coil of relay K A5 links to each other with dc power supply after excessive filled protection switch ofp connects with preventing again, and dc power supply links to each other through the drive end of closed type magnetic switch KK and relay K A1, relay K A3, relay K A4.The first electromagnetic valve coil S1 and the 3rd electromagnetic valve coil S3 are in parallel, and link to each other with communication power supply after the normally opened contact K switch A3-2 series connection of this parallel circuit and relay K 3 again.The second electromagnetic valve coil S2, the 7th electromagnetic valve coil S7 and the 4th electromagnetic valve coil S4 parallel connection; 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, link to each other with communication power supply.The 5th electromagnetic valve coil S5 and the 6th electromagnetic valve coil S6 parallel connection, the normally-closed contact K switch A1-2 of this parallel circuit and relay K A1 is linked to be series circuit, links to each other with communication power supply.Link to each other with communication power supply again after the normally opened contact K switch A5-1 of relay K A5 and the 8th electromagnetic valve coil S8 series connection.

During use, comprise following sequential steps:

1) will reclaim the liquid input port of machine gaseous state input port and recovery machine and be connected on the refrigeration system, and reclaim the liquid delivery outlet of machine gaseous state delivery outlet and recovery machine and be connected on the recycling can;

2) turn on the power switch, by starting knob, compressor rotation, cold-producing medium entering recovery machine gaseous state input port in the refrigeration system and the liquid input port of recovery machine;

1. when the gas-liquid sensor detected cold-producing medium for liquid state, the magnetic switch that control circuit is controlled in the gas-liquid sensor automatically broke off, and the 5th, six, eight magnetic valves are connected and opened, in the liquid refrigerant entering recycling can in the refrigeration system;

2. when the gas-liquid sensor detects cold-producing medium and is gaseous state; The magnetic switch that control circuit is controlled in the gas-liquid sensor is automatically connected; The second, four, seven, eight magnetic valves are connected and are opened, and the gaseous refrigerant in the refrigeration system gets into condenser after compressor compresses, get in the recycling can again;

3. in the removal process, when internal system pressure reached the specified operating pressure of low tension switch, control circuit was automatically converted to from clear pattern;

3) carry out manually when the clear pattern like need, start manually from clear switch.

As shown in Figure 7, be the liquid recovery operation state of recovery machine.When the gas-liquid sensor detected cold-producing medium for liquid state, the closed type magnetic switch of gas-liquid sensor internal broke off, relay K A1 coil blackout; Relay K A5 coil has; This moment, the 5th, the 6th and the 8th magnetic valve was connected, other closed electromagnetic valve, and liquid mode of operation indicator lamp LED5 is bright.Gas in the recycling can is extracted out from reclaiming machine gaseous state delivery outlet; After compressor compresses, become gases at high pressure; Flow into refrigeration system through reclaiming machine gaseous state input port; Under the effect of pressure reduction, the 4th check valve, the 8th magnetic valve, the 3rd check valve, the liquid delivery outlet of recovery machine flow directly into recycling can to the liquid refrigerant in the refrigeration system from the liquid input port of recovery machine.

As shown in Figure 8, for reclaiming machine gaseous state recovery operation state., the gas-liquid sensor (perhaps extracted the back) when detecting cold-producing medium and be gaseous state at liquid refrigerant; 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, and LED4 is bright for gaseous state mode of operation indicator lamp.Gaseous refrigerant (having a small amount of liquid refrigerant) in the refrigeration system from the liquid input port of recovery machine, reclaim machine gaseous state input port and get into compressor, the compression back flows into recycling can through first check valve from reclaiming machine gaseous state delivery outlet through the condenser cooling.

As shown in Figure 9, be the certainly clear duty of recovery machine.After reclaiming a period of time, when the refrigeration system internal pressure reached the specified operating pressure of low tension switch LP, relay K A2, relay K A3 got; Change over to from clear pattern; This moment, the first, the 3rd and the 8th magnetic valve was connected, and all the other closed electromagnetic valves are bright from clear mode of operation indicator lamp LED6.The residual cold-producing medium of recovery machine inner (comprising condenser and internal pipeline) flows into recycling can from reclaiming machine gaseous state delivery outlet after compressor compresses.Because this recovery machine is built-in with the second, the 4th check valve, can prevent when clear in the cold-producing medium flow back into refrigeration system.Action through low tension switch comes to relay signal, thereby the break-make of control respective electrical magnet valve realizes the variation of path, reaches from clear order.All processes is accomplished automatically, does not need manual operation.

The utility model has good security performance.In entire work process, when outlet side pressure reached the rated pressure value of high-voltage switch gear HP, high-voltage switch gear broke off, the relay K outage, and compressor M1 shuts down, and HT pilot LED1 is bright.When the recycling can inner refrigerant reach nominal volume 80% the time, protection switch ofp breaks off, relay K A5 outage, the relay K outage, compressor M1 shuts down, LED3 is bright for the OFP indicator lamp.After settling accounts bundle certainly, relay K A4 outage, the relay K outage, compressor M1 shuts down, and it is bright to settle accounts bundle indicator lamp LED2 certainly.

The utility model has also fully taken into account the special circumstances in the practical work process; As because of the working time oversize; Or because of the specified operating pressure that causes to reach low tension switch service time more for a long time or piston ring damage etc.; At this moment can be manually from clear, by manually certainly clear switch S B3 is just passable, but do not work from clear mode of operation indicator lamp LED6 this moment.

Also be provided with three time delay modules in the utility model control circuit, realized by 555 delay chips, amount of liquid refrigerant was few when both having taken into full account firm start, and the problem of frequent movement possibly appear in the gas-liquid sensor; Consider that again presumable client starts shooting earlier, the back is opened the intake line stop valve and possibly occurred because of the input port hypotony causes the low tension switch action, and machine changes the problem from clear mode of operation over to; Also considered when reclaim to finish changeing, possibly occur from clear pattern because of the very low out-of-work problem of low tension switch action machine that causes of moment compressor input port pressure.

Specific embodiment described herein only is that the design to the utility model illustrates.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from the spirit of the utility model or surmount the defined scope of appended claims.

Claims (9)

1. a full-automatic four-hole reclaims machine; Comprise housing and be located at control valve (9), compressor (11), condenser (12) and the blower fan (13) in the housing; On control valve (9), be provided with recovery machine gaseous state input port (91), the liquid input port (92) of recovery machine, recovery machine gaseous state delivery outlet (93), the liquid delivery outlet (94) of recovery machine; Recovery machine gaseous state input port (91) links to each other with refrigeration system with the liquid input port of recovery machine (92); Recovery machine gaseous state delivery outlet (93) links to each other with recycling can with the liquid delivery outlet of recovery machine (94); It is characterized in that: on the liquid input port of said recovery machine (92), be provided with gas-liquid sensor (14); And on the connecting line on the connecting line between control valve (9) and compressor (11), between compressor (11) and condenser (12) and condenser (12) and control valve (9) but between connecting line on be provided with the magnetic valve of several control piper break-makes, magnetic valve and gas-liquid sensor (14) are connected electrically in the break-make of controlling corresponding pipeline on the control circuit and through control circuit.

2. full-automatic four-hole according to claim 1 reclaims machine; It is characterized in that: said magnetic valve comprises first magnetic valve (1), second magnetic valve (2), the 3rd magnetic valve (3), the 4th magnetic valve (4), the 5th magnetic valve (5), the 6th magnetic valve (6), the 7th magnetic valve (7) and the 8th magnetic valve (8); Recovery machine gaseous state input port (91) links to each other through the import of second magnetic valve (2) and compressor (11); The outlet of compressor (11); One road warp first magnetic valve (1) links to each other with recovery machine gaseous state delivery outlet (93); Another Lu Jingdi six magnetic valves (6) link to each other with recovery machine gaseous state input port (91); Also have one tunnel import to link to each other through the 7th magnetic valve (7) and condenser (12); The outlet of condenser (12) links to each other with recovery machine gaseous state delivery outlet (93); The import of condenser (12) links to each other through the 3rd magnetic valve (3), the 5th magnetic valve (5) and recovery machine gaseous state delivery outlet (93) again successively; The import of passing through pipeline and compressor (11) between the 3rd magnetic valve (3) and the 5th magnetic valve (5) again links to each other, and the liquid input port of recovery machine (92) links to each other with the liquid delivery outlet of recovery machine (94) through the 8th magnetic valve (8), and gas-liquid sensor (14) is located on the connecting line between liquid input port (92) of recovery machine and the 8th magnetic valve (8); Gas-liquid sensor (14) is connected after the import of the 4th magnetic valve (4) and compressor (11) links to each other but also through pipeline not only on the pipeline between the 3rd magnetic valve (3) and the 5th magnetic valve (5), and compressor (11) also is connected electrically on the control circuit.

3. full-automatic four-hole according to claim 1 and 2 reclaims machine; It is characterized in that: on the connecting line between liquid input port (92) of said recovery machine and gas-liquid sensor (14), be provided with the 4th check valve (15); On the connecting line that reclaims between machine gaseous state input port (91) and second magnetic valve (2), be provided with second check valve (16); The input of second check valve (16) links to each other with the tie point that reclaims machine gaseous state input port (91) with the 6th magnetic valve (6); The output of second check valve (16) links to each other with second magnetic valve (2), and being provided with of second check valve (16) and the 4th check valve (15) flows to to flow to the recovery machine from refrigeration system; On the connecting line between liquid delivery outlet (94) of recovery machine and the 8th magnetic valve (8), be provided with the 3rd check valve (17); On the connecting line that reclaims between the outlet of machine gaseous state delivery outlet (93) and condenser (12), be provided with first check valve (18), being provided with of first check valve (18) and the 3rd check valve (17) flows to to flow to recycling can from the recovery machine.

4. full-automatic four-hole according to claim 1 and 2 reclaims machine; It is characterized in that: the import at said compressor (11) is provided with low tension switch LP; The outlet of compressor (11) is provided with high-voltage switch gear HP, and low tension switch LP, high-voltage switch gear HP are connected electrically on the control circuit respectively.

5. full-automatic four-hole according to claim 1 and 2 reclaims machine; It is characterized in that: said gas-liquid sensor (14) comprises that a valve body (141) and an end are encapsulated in the hollow guide rod (142) in valve body (141) container cavity; In corresponding to the hollow guide rod (142) in the valve body (141), be provided with magnetic switch (143); Outside the hollow guide rod (142) corresponding, slidely connect the ball float group with magnetic switch (143); And in the corresponding container cavity in ball float group two ends, be respectively equipped with input port and delivery outlet; Ball float group wherein comprises empty boasting (144), annular magnet (145) and the capping (146) that is sleeved on the PP material on the hollow guide rod (142) successively; Annular magnet (145) is folded between empty boasting (144) and capping (146), and on the hollow guide rod (142) between ball float group and the valve body (141), is set with power assistant spring (147).

6. full-automatic four-hole according to claim 5 reclaims machine; It is characterized in that: go up suit at said hollow guide rod (142) and be fixed with rod coupling (148); Hollow guide rod (142) spins through rod coupling (148) and is fixed on the valve body (141), and between valve body (141) and rod coupling (148), is folded with O RunddichtringO (149).

7. full-automatic four-hole according to claim 1 and 2 reclaims machine; It is characterized in that: on said recovery machine gaseous state input port (91), the liquid input port (92) of recovery machine, recovery machine gaseous state delivery outlet (93), the liquid delivery outlet of recovery machine (94), be provided with the filter screen adapter; The filter screen adapter comprises that an end is screwed in the union elbow (191) on the control valve (9); The other end at union elbow (191) is connected with crossover sub (192), between union elbow (191) and crossover sub (192), is folded with filter screen (193).

8. full-automatic four-hole according to claim 1 and 2 reclaims machine; It is characterized in that: said blower fan (13) is fixed on the rear end cap of compressor (11); Between compressor (11) rotating shaft and blower fan (13) rotating shaft, be provided with speed increasing mechanism; Speed increasing mechanism comprises and is fixed on the gear wheel (201) in compressor (11) rotating shaft and is fixed on the pinion (202) in blower fan (13) rotating shaft; Gear wheel (201) is mutually meshing with pinion (202), and fan blade (131) is sleeved in blower fan (13) rotating shaft, and between fan blade (131) and blower fan (13) rotating shaft, is provided with buffer stopper (132).

9. full-automatic four-hole according to claim 1 and 2 reclaims machine; It is characterized in that: said housing comprises left shell (101) and the right shell body (102) that docks with left shell (101); Between the leading section of left shell (101) and right shell body (102), be folded with guidance panel (21), on guidance panel (21), be provided with power switch, manual 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.

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