CN1038378C - Single-phase induction motor and refrigerator using single-phase induction motor - Google Patents
Single-phase induction motor and refrigerator using single-phase induction motor Download PDFInfo
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- CN1038378C CN1038378C CN95116930A CN95116930A CN1038378C CN 1038378 C CN1038378 C CN 1038378C CN 95116930 A CN95116930 A CN 95116930A CN 95116930 A CN95116930 A CN 95116930A CN 1038378 C CN1038378 C CN 1038378C
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- motor
- mutual capacitance
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- refrigerator
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/025—Motor control arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
- F25D17/062—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators
- F25D17/065—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators with compartments at different temperatures
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
- H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
- H02P1/42—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual single-phase induction motor
- H02P1/44—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual single-phase induction motor by phase-splitting with a capacitor
- H02P1/445—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual single-phase induction motor by phase-splitting with a capacitor by using additional capacitors switched at start up
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P3/00—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
- H02P3/06—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter
- H02P3/18—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an ac motor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/85—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using variable-flow pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
- F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
- F25D2317/065—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air return
- F25D2317/0653—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air return through the mullion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
- F25D2400/04—Refrigerators with a horizontal mullion
Abstract
A single-phase induction motor contains a main winding, an auxiliary winding installed at electrically different angles from each other, a starting capacitor connected with the auxiliary winding through a starting relay, a plurality of operation or run capacitors connected in parallel with the stating capacitor, a relay that connects and disconnects at least one of the operation or run capacitors, and a controller that closes the relay when the motor is powered off. Said single-phase induction motor overcomes present technology problems, especially, a high current does not having an arc take place at the contact of a relay for switching an operational capacitor. Said single phase induction motor has higher starting torque and better operational efficiency.
Description
The present invention relates to the method for single phase induction motor, a kind of control single phase induction motor that is used for compressor and use the refrigerator of this motor or air conditioner or/and other electric equipment.
In accompanying drawing, Figure 13 is a circuit diagram that is used for disclosing as uncensored Japan Patent the common compressor driving arrangement of this device of the disclosed air conditioner of clear 64-29682.This circuit is used for the electric capacity 2 of underload, electric capacity that is used for high load capacity 3, a change over switch 4 and a starter relay 5 by 1, one on a compressor (motor) and constitutes.Change over switch is transformed into another electric capacity from an electric capacity.Starter relay is only worked during to connecting terminal 5a at starting compressor 1.
The work of this traditional compressor driving arrangement may be described with reference to Figure 14.
When starting compressor 1, the terminal voltage of electric capacity is low, cause the contact 5a closure of starter relay 5, at this moment electric capacity 2 and electric capacity 3 are in parallel with the auxiliary winding of compressor 1, thereby obtain a very big starting torque (torque curve of use starting capacitance is shown in Figure 14).Therefore, although initial load is very high, compressor start.
When the rotating speed of compressor increased, the terminal voltage of electric capacity also raise.The place, working point of relay 5 shown in Figure 14, contact 5a is opened.Then, has only mutual capacitance work (seeing the torque curve that uses mutual capacitance among Figure 14).At this moment, according to the load of compressor 1, change over switch 4 is changed between electric capacity.When the load of compressor hangs down, electric capacity 2 is used as mutual capacitance and electric capacity 3 is used as starting capacitance.On the contrary, when the load of compressor is high, electric capacity 3 is used as mutual capacitance and electric capacity 2 is used as starting capacitance.Like this, switch transition makes the compression function drive with enough starting torques and very high operating efficiency.
The structure of common compressor driving arrangement produces following point:
1. when the amount of torque during compressor start and the routine work has marked difference, electric capacity 2 is used as mutual capacitance and electric capacity 3 is used as starting capacitance.Yet, at higher load condition electric capacity 3 is used as mutual capacitance, because the capacitance of electric capacity 3 is too big, the efficient that provides is very low.
2. same, electric capacity 3 excessive capacity always cause the error that absolute capacitance value is bigger, and then cause the job insecurity of starter relay.
3. each time when electric capacity 2 and electric capacity 3 are converted, one to the big electric current of the mutual capacitance charging contact by change over switch 4.And the electric arc that big electric current produces reduces the life-span of contact significantly, and the reinforcement of contact needs very high expense.
The present invention for overcoming the problems referred to above is, its purpose is, obtains a kind of contact that is used to change capacitance and connect single phase induction motor and the control method thereof that must just carry out and the refrigerator that uses this kind single phase induction motor when stopping.
Another object of the present invention is, obtain a kind ofly the time must utilize whole electric capacity, start with big starting torque in starting, and can be according to load condition, adopt the single phase induction motor and the control method thereof of optimum electric capacity and use the refrigerator of this kind single phase induction motor.
A further object of the invention is, obtain a kind of deenergization power supply rapidly when abnormal conditions such as generation stall, and can utilize whole electric capacity when starting once more, with single phase induction motor and control method thereof that produces maximum starting torque and the refrigerator that uses this kind single phase induction motor.
Therefore, main purpose of the present invention is to overcome these problems relevant with prior art.According to the present invention, a kind of single phase induction motor is provided, and it comprises that a main winding, one and main winding are mounted to the auxiliary winding of different electrical degrees, a plurality of mutual capacitances that are connected with auxiliary winding, one and connect and disconnect the relay of mutual capacitance and one and have only the controller that just makes relay closes when the power supply of motor is cut off.
The present invention also provides a kind of method of controlling single phase induction motor, and this motor has a main winding, one and main winding to be mounted to the auxiliary winding of different electrical degrees, a plurality of electric capacity that are connected with auxiliary winding, one to connect and disconnect the relay of mutual capacitance and one and have only the controller that just makes relay closes when the power supply of motor is cut off.
The present invention can use with compressor, for example is used for refrigerator.It can use all electric capacity also can select best electric capacity according to the size of load with very big starting torque starting compressor.
In one embodiment, deenergization is possible when abnormal conditions occurring, and makes all electric capacity can produce maximum starting torque when resetting.
The non-limiting embodiments of being lifted in conjunction with the drawings, present invention will be further described, wherein:
Fig. 1 is the circuit diagram of the single phase induction motor of the expression embodiment of the invention 1.
Fig. 2 is the viewgraph of cross-section of a refrigerator, and this refrigerator comprises the single phase induction motor of the embodiment of the invention 1.
Fig. 3 is the flow chart of the control program of the expression embodiment of the invention 1.
Fig. 4 is the flow chart of the refrigerator control program of the expression embodiment of the invention 1.
Fig. 5 is the flow chart of the refrigerator control program of the expression embodiment of the invention 1.
Fig. 6 is the circuit diagram of the single phase induction motor of the expression embodiment of the invention 2.
Fig. 7 is the flow chart of the refrigerator control program of the expression embodiment of the invention 2.
Fig. 8 is the flow chart of the refrigerator control program of the expression embodiment of the invention 2.
Fig. 9 represents the output voltage of the current detector of the embodiment of the invention 2.
Figure 10 is the flow chart of the refrigerator control program of the expression embodiment of the invention 2.
Figure 11 is the flow chart of the refrigerator control program of the expression embodiment of the invention 5.
Figure 12 is the flow chart of the refrigerator control program of the expression embodiment of the invention 6.
Figure 13 is the circuit diagram of traditional compressor driving arrangement.
Figure 14 is the characteristic of the traditional single phase induction motor of expression.
Because a big electric current produces electric arc by the contact, particularly when connecting mutual capacitance, has only when compressor is in halted state just closure of contact.
Referring now to Fig. 1, compressor 1 comprises a motor.Compressor 1 comprises a main winding 1a and an auxiliary winding 1b.A positive temperature coefficient (PTC) thermistor 5 makes starting capacitance 6 link to each other with the auxiliary winding 1b of compressor when compressor start.First mutual capacitance 7 is with the PTC thermistor and starting capacitance is in parallel and keep work when load reaches stable state.When uprising, load will add through the contact of relay 4 4a second mutual capacitance 8 in parallel with first mutual capacitance.The work of controller 10 control compressors 1.Temperature sensor 11 detects the temperature of cooler (not shown).Relay 12 is switched on or switched off power of compressor by its contact 12a.Discharge resistance 13 makes second mutual capacitance discharge when relay contact 4a is opened.
Fig. 2 represents the refrigerator viewgraph of cross-section with driven compressor equipment of the present invention.In Fig. 2, refrigerator main body 100 has a refrigerating chamber 101 that is positioned on the refrigerating chamber 102.The fan 103 that is used for circulate cold air is made up of blade and motor.By motor-driven air damper 104, this air damper is regulated the cold air amount that flows into refrigerating chamber, thereby makes it to remain on suitable temperature.A cooler (evaporator) 105 is provided in refrigerating chamber.Provide a heater 106 to make cooler 105 defrostings.
In the bottom of main body compressor 1 is installed.Near cooler 105, be provided with temperature sensor 11 and play the defrosting thermometer.
With reference to the flow chart among Fig. 3, second control operation of refrigerator is discussed at first.
In 200 steps, read temperature data from refrigerating chamber and refrigerating chamber, temperature sensor 11 is as a defrosting thermistor.In 201 steps, check whether cooler is defrosted then.Automatically detect or the operator defrosts with an independent subprogram (not shown) starting when asking in response.Determine to continue defrosting or stop defrosting according to the temperature that the temperature sensor 11 of cooler 105 is read.In 203 steps heater 106 is set and connects, continue defrosting; In 204 steps heater is set and disconnects, finish defrosting.Then, working procedure to 213 step, the temperature of using air damper 104 to regulate refrigerating chamber.If do not defrost, whether determine the needs compressor operating according to the temperature of refrigerating chamber at 205 steps places in 201 steps.When the temperature of refrigerating chamber is high, needs compressor operating and allow compressor operating (see and forbid that working mark K is low), if compressor 1 and fan electromotor 103 all less than work, then 206 steps the place with they startings, prevent to start the timer zero clearing.In 208 steps compressor operating sign F being set is 1 to show that compressor moves.When the temperature of refrigerating chamber is low or becomes when low, compressor 1 and fan electromotor 103 209 steps the place be stopped, forbid that working mark K is changed to 1, compressor operating sign F is clearly zero, putting and preventing to start timer TM is 10 minutes.The setting of forbidding working mark K reaches 10 minutes and can prevent too frequent operation of compressor.After 10 minutes, go on foot forbidding that working mark K is clearly zero 212.
In 213 to 215 steps,, make refrigerator remain on suitable temperature by motor-driven air damper work.
Said procedure periodically reruns, and for example, per minute all makes refrigerator be in slave mode.
The detailed operation situation of driven compressor equipment (particularly 205 of Fig. 3,206,208 and 209 steps) will be further described with reference to the flow chart of figure 4.
21 steps place in Fig. 4 determines whether compressor 1 is in halted state (zero setting of compressor operating sign).If be in halted state, according to temperature request work (in 22 steps).Whether compressor is ready to starting, at first will could determine after 23 steps place checks to forbid working mark.When it is when being in starting state, relay contact 4a closure, in parallel all three electric capacity 6,7 and 8 are for starting compressor is got ready.The working mark of compressor 1 also is changed to 1.After 1 second,, be the starting compressor energized in the 27 steps relay contact 12a of place closure.Like this, when down circuitry, relay contact 4a action.
Starting capacitance 6 and the mutual capacitance 7 and 8 in parallel with the auxiliary winding of compressor 1 will help compressor to obtain very high starting torque, and therefore, although high initial load is arranged, compressor also can be started.Simultaneously, electric current also flows through the PTC thermistor.When its resistance when Curie point becomes infinity, starting capacitance 6 will disconnect from auxiliary winding, surplus two mutual capacitances 7 are connected with 8.(whether this time depends primarily on defrosting and take place) need disconnect electric capacity 8 behind the certain hour.So,, pick up counting from compressor 1 starting in 28 steps.Then, went on foot for 30 steps 29, under the situation of finishing defrosting, consider the high load capacity of compressor, after 2 minutes (T1), relay contact 4a will disconnect, or after 2 seconds (T2) in other cases, mutual capacitance 7 only be arranged when making compressor 1 work.When the working mark (for example compressor is in work) when 21 steps were defined as 1 of compressor 1, the work of whether asking will be depended on the temperature in 26 steps, and then, in 27 steps, relay contact 12a remains closed, to the compressor power supply, and as above-mentioned work.
When 26 steps places compressor is being worked but do not had work request, the relay contact 12a of place disconnects in 34 steps, thereby disconnects power of compressor, and the working mark of putting compressor 1 is zero.After 1 second kind (S35), in 36 steps, relay contact 4a disconnects, thereby does not waste the electric energy of relay coil 4.Go wrong for fear of the contact, preferably after electric capacity 7 and electric capacity 8 discharges, relay contact 4a is opened.This be because, open relay contact 12a after relay contact 4a open.
Yet, shown in the flow chart of Fig. 5,, also can at first open relay contact 4a by exchange with step 34 and 36.
Torque according to the operating state of refrigerator control compressor 1 can make compressor with high efficiency and big starting torque work.
And because have only when compressor 1 during in halted state, relay contact 4a is just closed, and big electric current will can not pass through relay contact 4a, can not produce electric arc yet.When compressor 1 and power connection, they were can be not closed when for example electric capacity 7 just had been recharged.
Embodiment 2
Second embodiment of the present invention to above-mentioned be similar, but have additional inspection and the ability of fixing a breakdown.If compressor starts stall, because a certain former thereby quit work, abnormal conditions is promptly detected, and compressor is disconnected power supply then.When sending work request again, according to the present invention, all electric capacity are connected, so that obtain maximum starting torque.
In Fig. 6, except current detector 9 (being called CT hereinafter) be used for the protective device 14 of compressor 1, the configuration of embodiment 2 is identical with embodiment 1.CT detects the electric current that flows through compressor 1.
In CT9, as Fig. 9 represented, the output voltage that is produced depended on the electric current that flows through compressor 1.According to output voltage, controller 10 stops or disconnecting the state of store compressed machine by (1) work, (2) stall or locking or (3).
Then, in 37 steps of Fig. 7, determine whether operate as normal during in relay contact 12a closure of compressor 1 by the electric current that detects at CT9 place.If detect any abnormal conditions, do further to check to determine whether these abnormal conditions are caused by stall or lock condition in 38 steps.If determine to be caused by stall or lock condition, relay contact 12a is opened, and the compressor operating sign becomes 0 from 1, puts and forbids that working mark K is 1.After 1 second kind, relay contact 4a is opened (34 to 36 step).If abnormal conditions are not caused by stall or lock condition, because relay contact 12a is in closure state, circuit must be to quit work for a certain reason at the somewhere disconnection or the compressor 1 that comprise compressor, and in this case, putting discontinuous sign D in 39 steps is 1.Then, in 34 to 36 steps, cut off the power supply of compressor 1.Disconnecting this power supply will be prior to the power supply that is disconnected by protective device 14.
In Fig. 7,34 the step open relay contact 12a after, 36 the step, also be opened by embodiment 1 described reason relay contact 4a.Yet, as shown in Figure 8, also can before opening relay contact 12a, open relay contact 4a.
During operation, when compressor 1 stall or become when locking for a certain reason, the current detecting abnormal conditions that controller 10 is measured according to CT9 place, and the power supply of cut-out compressor 1 are opened relay contact 4a.Work is when starting once more, and controller 10 at first makes relay contact 4a closure, just makes relay contact 12a closure then, and like this, compressor 1 permission that is connected with all electric capacity starts to work once more with very big starting torque once more.
If there is not CT9, and can not carry out control operation, the protective device 14 final power supplys that disconnect compressors 1 under the situation of stall or locking condition at the CT9 shown in Fig. 7 or 8.If the situation of stall or locking condition occurs in after relay contact 4a is opened, after resuming work, relay contact 4a stays open state when protective device is connected power of compressor once more.Therefore, only have starting capacitance 6 and mutual capacitance 7 to work when starting, the starting torque that obtains thus is not enough.
Embodiment 3
The detection that shunt resistance or vibrating sensor can be used to replace current detector CT9 in the above-mentioned embodiment and proof can carry out equivalence to the operating state of compressor 1.
Embodiment 4
Refer now to Figure 10, when the refrigerator plug is inserted supply socket, survey the temperature of evaporator 105 by temperature sensor 11.If temperature keeps below A degree Celsius in 1 hour, just open relay contact 4a (40 to 45 step), produce the effect as embodiment 1, wherein, determine the use of uniting of when height and underload electric capacity 7 and 8 by the time cycle.Can judge the insertion time that goes on foot 40 by inserting mark P.Only when the refrigerator plug is inserted supply socket, put insertion and be masked as 1 by controller 10.When temperature in 1 hour keeps below A Celsius and spends, put to insert and be masked as zero in 46 steps.According to present embodiment, refrigerator can be with high torque (HT) continuous operation 1 hour, thereby guarantees can fully cool off when refrigerator inserts.
Embodiment 5
In above-mentioned, have this may: promptly the fault of CT9 causes controller to determine that improperly compressor is just in stall and cut off power of compressor.For fear of such false judgment, in the present embodiment,, thereby keep the refrigerator cooling as long as when detecting fault, there is request work just to check CT9 and to compressor power supply at the CT9 place.
Flow chart with reference to configuration and Figure 11 of figure 6 given proposes following embodiment 5.At 50 step periods, carry out fault detect at CT9.Although there is not electric current,, controller 10 just determines that fault takes place if receiving an ON (connection) signal.If the working mark that is in halted state and puts it at 21 step compressors 1 is zero, check the work of whether asking in 22 steps, if the working mark that is closed and puts compressor 1 at 24 step relay contact 4a is 1.After 1 second (S25), provide power supply at 27 step relay contacts, the closed compressor 1 of giving of 12a.
On the other hand, if be in running order and the working mark of putting it is 1, check the work of whether asking in 26 steps at 21 step compressors.When request work,, judge, before whole work request of compressor 1 have satisfied, still keep giving compressor and fan electromotor power supply owing to can not correctly make stall if detect abnormal conditions at 51 step CT9.
In 51 steps, if the CT9 operate as normal is checked stall in 52 steps.If detect stall 53, relay contact 12a is opened and the working mark of compressor 1 is changed to zero.After 1 second, relay contact 4a is opened, and cuts off the power supply (34 to 36 step) of compressor 1.
If detect fault, may make a wrong indication at 51 step CT9.The power supply of compressor 1 still keeps connecting after the stall even begin at it, might determine not to be compressor 1 but abnormal conditions appears in CT9.
In embodiment 5, even when detecting fault at the CT9 place, thereby it is inner and will keep do not judge stall before powering to compressor 1 to have satisfied the cooling refrigerator up to whole work request of compressor 1.Like this, the fault of CT9 will not hinder refrigerator work.
Can separate execution with the work among Fig. 7 or Fig. 8 or merge the serial execution in the work described in Figure 11.
Embodiment 6
With reference to the flow chart among Figure 12, below embodiment 6 will be described.If compressor 1 beginning stall, when its working mark was changed to 1, the power supply that stops to supply with compressor 1 was once counted 1 (S54) with the number of continuous stall.When supply power once more, if compressor begins stall once more, the power supply of supplying with compressor 1 is stopped once more after 10 minutes, and the number of stall is counted 2 (S55) continuously.At this moment controller 10 determines adding high load capacity.Therefore, after 10 minutes, when compressor 1 was reset, the work of high torque (HT) will extend to 30 minutes.If stall is recurred, when compressor 1 is reset, its high torque (HT) work is each as stall takes place will to prolong half an hour, until 2 hours (S56) after 10 minutes.
When compressor 1 normally stops its work, the number of continuous stall is set once more.Like this, high torque (HT) work can turn back to length normal time (57 and 58 step) when compressor 1 is reset next time.
Can be extended half an hour if recur the high torque (HT) work that the number of times of stall surpasses when compressor 1 is reset after twice, 10 minute,, thereby prevent compressor 1 continuous stall when its work starting until 2 hours.
Narrated several specific embodiment of the present invention, various changes, modification and improvement occurring by the those of ordinary skill in the technical field in the defined scope of the invention of following claim book is easily.
Claims (22)
1. single phase induction motor, this motor comprises:
A main winding;
One is mounted to the auxiliary winding of different electrical degrees with main winding;
The a plurality of mutual capacitances that are connected with auxiliary winding;
The relay that can connect and disconnect at least one mutual capacitance; With
It is characterized in that:
One is had only the controller of opening relay and closing relay before the power supply is being provided when the power supply of motor being cut off.
2. according to the single phase induction motor of claim 1, it is characterized in that a plurality of mutual capacitances are in parallel with a starting capacitance, this mutual capacitance is connected with auxiliary winding through a switching device.
3. according to the individual event induction machine of claim 1 or 2, it is characterized in that when load had reduced after motor was started, relay disconnected a mutual capacitance at least.
4. according to the induction machine of claim 3, it is characterized in that, this motor comprises and first mutual capacitance of assisting winding to be connected and second mutual capacitance that is connected with auxiliary winding through relay, wherein, be used as an additional capacitor when motor second mutual capacitance when high load capacity is worked.
5. according to the single phase induction motor of claim 1, it is characterized in that this motor also comprises: the current detector of detection streaming current in motor, wherein, controller cuts off the power supply of motor and opens relay when detector detects stall.
6. according to the single phase induction motor of claim 1, it is characterized in that motor power just disconnects relay through one period scheduled time after disconnecting.
7. refrigerator that uses single phase induction motor, this equipment comprise in the claim 1 to 6 each single phase induction motor, and wherein, whole mutual capacitances are connected when electric motor starting.
8. according to the refrigerator of claim 7, it is characterized in that when the load of driven compressor equipment hanged down, the relay of connection and disconnection mutual capacitance was opened.
9. according to the refrigerator of claim 7, it is characterized in that, when the temperature of the evaporator of refrigerating chamber or refrigerator drops to when being lower than predetermined level, connect and the relay that disconnects mutual capacitance is opened.
10. according to the refrigerator of claim 7, it is characterized in that, comprise a defrosting device, and wherein after defrosting is finished, be provided with longerly than the operate as normal phase during this period of time by what relay connected that time to the mutual capacitance of mutual capacitance is disconnected.
11. according to each refrigerator in the claim 7 to 10, when relevant with claim 5, further be included in the current detector place and detect the device of abnormal conditions, and wherein when current detector abnormal conditions occur, controller is not carried out the detection of compressor stall.
12. according to the refrigerator of claim 11, also comprise a cover setting device, this device is set one period time cycle that the each compressor stall of ratio is all grown between by relay connection and disconnection mutual capacitance.
13. method of controlling single phase induction motor, this single phase induction motor has a main winding, one and main winding and constitutes the auxiliary winding of different electrical degrees, a plurality of mutual capacitances that are connected with auxiliary winding, one and connect and disconnect the relay of at least one mutual capacitance and the controller of a control relay, it is characterized in that closing relay when controller opens and power supply are added on the motor when the power supply of motor is cut off.
14. the method according to claim 13 is characterized in that, after motor had been reduced by starting, load, relay disconnected a mutual capacitance at least.
15. method according to claim 14, employed motor comprises and first mutual capacitance and second mutual capacitance that is connected with auxiliary winding through relay of assisting winding to link to each other, wherein, be connected as an additional capacitor when second mutual capacitance when the motor high load capacity is worked.
16. according to each method in the claim 13 to 15, comprise the electric current that detection is flowed in motor, when detector detects stall, cut off the power supply of motor and open relay.
17., wherein, just disconnect relay through one section preset time after the power supply of motor is cut off according to the method for claim 13.
18. the method according to claim 13 is characterized in that, connects all electric capacity of work when being included in electric motor starting.
19. method according to claim 13, it is characterized in that wherein, motor is used as the compressor that drives refrigerator, and wherein drop to when being lower than predetermined level when the temperature of the evaporator of refrigerating chamber or refrigerator, connect and the relay that disconnects mutual capacitance is opened.
20. the method according to claim 19 is characterized in that, is provided with longerly than normal work period from the time that time to the mutual capacitance that is connected mutual capacitance by relay is disconnected after defrosting is finished.
21., it is characterized in that, when relevant, further be included in and detect abnormal conditions in the current detecting, and when abnormal conditions is detected, suspend and carry out compressor stall and survey with claim 17 according to each method in the claim 17 to 20.
22., comprise from relay being connected to one period time cycle that the each compressor stall of ratio is all grown of setting between the disconnection mutual capacitance according to the method for claim 21.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20710594 | 1994-08-31 | ||
| JP207105/94 | 1994-08-31 | ||
| JP07075178A JP3126895B2 (en) | 1994-08-31 | 1995-03-31 | Single-phase induction motor and refrigerator using the single-phase induction motor |
| JP075178/95 | 1995-03-31 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1132961A CN1132961A (en) | 1996-10-09 |
| CN1038378C true CN1038378C (en) | 1998-05-13 |
Family
ID=26416329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95116930A Expired - Lifetime CN1038378C (en) | 1994-08-31 | 1995-08-31 | Single-phase induction motor and refrigerator using single-phase induction motor |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP3126895B2 (en) |
| CN (1) | CN1038378C (en) |
| GB (1) | GB2292847B (en) |
| HK (1) | HK1000503A1 (en) |
| SG (1) | SG54971A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100513945C (en) * | 2006-05-11 | 2009-07-15 | 松下电器产业株式会社 | Air conditioner |
| CN103457520A (en) * | 2012-06-04 | 2013-12-18 | 思科普有限责任公司 | Motor system with a relay disconnecting start winding at voltage threshold |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5818186A (en) * | 1996-04-03 | 1998-10-06 | Hewlett-Packard Company | Multiple impact motor drive for stapling |
| US6318966B1 (en) | 1999-04-06 | 2001-11-20 | York International Corporation | Method and system for controlling a compressor |
| MY125213A (en) | 1999-11-12 | 2006-07-31 | Lg Electronics Inc | "device and method for controlling supply of current and static capacitance to compressor" |
| US6844698B1 (en) * | 1999-11-12 | 2005-01-18 | Lg Electronics Inc. | Device and method for controlling supply of current and static capacitance to compressor |
| EP1139549A3 (en) * | 2000-03-29 | 2002-06-05 | SANYO ELECTRIC Co., Ltd. | Sealed motor compressor |
| ES2181598B1 (en) * | 2001-07-10 | 2004-06-01 | Cubigel, S.A. | A CONTROL CIRCUIT FOR A SINGLE-PHASE ELECTRIC INDUCTION MOTOR. |
| GB2387978A (en) | 2002-04-27 | 2003-10-29 | P D Technology Ltd | Motor control |
| KR100474330B1 (en) * | 2002-05-13 | 2005-03-08 | 엘지전자 주식회사 | Driving comtrol apparatus of reciprocating compressor for refrigerator |
| CH695976A5 (en) * | 2002-12-02 | 2006-10-31 | Roland Weigel | Apparatus and method for reducing the power consumption during start-up of a single-phase AC induction motor. |
| JP2006187057A (en) * | 2004-12-24 | 2006-07-13 | Sumitomo Electric Ind Ltd | Motor |
| KR20070071202A (en) * | 2005-12-29 | 2007-07-04 | 엘지전자 주식회사 | Velocity changeableness apparatus and method for hybrid induction motor |
| JP4955705B2 (en) * | 2006-02-02 | 2012-06-20 | エルジー エレクトロニクス インコーポレイティド | Linear compressor controller |
| DE102006034499A1 (en) * | 2006-07-19 | 2008-01-31 | Danfoss Compressors Gmbh | Motor start circuit |
| KR100819617B1 (en) * | 2006-12-29 | 2008-04-04 | 캐리어 주식회사 | Airconditioner compressor with softstarter |
| JP5148978B2 (en) * | 2007-12-12 | 2013-02-20 | オリエンタルモーター株式会社 | Torque adjustment method and torque adjustment device for capacitor motor |
| CN101932836B (en) * | 2008-01-08 | 2015-06-03 | Lg电子株式会社 | Apparatus and method for controlling operation of compressor |
| JP4845990B2 (en) * | 2009-04-13 | 2011-12-28 | 株式会社日立産機システム | air compressor |
| CN102742145B (en) * | 2009-10-22 | 2015-12-16 | 思科普有限责任公司 | AC monocyclic-start induction motor, for operation sheet phase induction motor equipment and there is the compressor of this motor or equipment |
| BRPI1005448A2 (en) * | 2010-12-22 | 2013-04-02 | Whirlpool Sa | Modular Compressor Speed Switching Circuit |
| CN102918274B (en) * | 2011-05-31 | 2015-04-08 | 日立空调·家用电器株式会社 | Method for detecting abnormality in refrigeration apparatus and apparatus therefor |
| CN103326663A (en) * | 2013-05-15 | 2013-09-25 | 轮通空调节能设备（上海）有限公司 | Control circuit of motor for cold storage and control method of motor |
| CN103414454B (en) * | 2013-08-26 | 2016-06-01 | 施乐 | Rotary magnetic establishes pass and stall protection method by cable |
| CN105371544A (en) * | 2014-08-29 | 2016-03-02 | 青岛海尔洗衣机有限公司 | Heat pump system, control method of heat pump system and clothes dryer |
| CN107327397B (en) * | 2017-08-29 | 2021-06-01 | 合肥恒大江海泵业股份有限公司 | Electric control system for monitoring and improving starting performance of submersible electric pump |
| KR102287163B1 (en) | 2020-01-10 | 2021-08-06 | 엘지전자 주식회사 | Electric motor and compressor having the same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4066937A (en) * | 1976-01-13 | 1978-01-03 | Lennox Industries, Inc. | Control circuit for a two speed single phase motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB513635A (en) * | 1938-03-04 | 1939-10-18 | British Thomson Houston Co Ltd | Improvements in and relating to electric motors |
| GB531374A (en) * | 1938-07-23 | 1941-01-02 | British Thomson Houston Co Ltd | Improvements in and relating to electric motors |
| DE2847456C2 (en) * | 1978-11-02 | 1982-04-29 | Danfoss A/S, 6430 Nordborg | Starting circuit for a compressor arrangement |
| GB2067370B (en) * | 1979-12-28 | 1984-01-25 | Myson Group Ltd | Electric motor start up control |
| GB2088658B (en) * | 1980-11-27 | 1984-01-25 | Electricity Council | A starting circuit for a single-phase induction motor |
-
1995
- 1995-03-31 JP JP07075178A patent/JP3126895B2/en not_active Expired - Fee Related
- 1995-06-22 SG SG1995000714A patent/SG54971A1/en unknown
- 1995-08-11 GB GB9516541A patent/GB2292847B/en not_active Expired - Fee Related
- 1995-08-31 CN CN95116930A patent/CN1038378C/en not_active Expired - Lifetime
-
1997
- 1997-10-21 HK HK97101998A patent/HK1000503A1/en not_active IP Right Cessation
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4066937A (en) * | 1976-01-13 | 1978-01-03 | Lennox Industries, Inc. | Control circuit for a two speed single phase motor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100513945C (en) * | 2006-05-11 | 2009-07-15 | 松下电器产业株式会社 | Air conditioner |
| CN103457520A (en) * | 2012-06-04 | 2013-12-18 | 思科普有限责任公司 | Motor system with a relay disconnecting start winding at voltage threshold |
| CN103457520B (en) * | 2012-06-04 | 2016-05-18 | 思科普有限责任公司 | There is the electric system of electric power system and be used to the electric power system of motor component power supply |
Also Published As
| Publication number | Publication date |
|---|---|
| HK1000503A1 (en) | 2000-03-24 |
| GB2292847A (en) | 1996-03-06 |
| CN1132961A (en) | 1996-10-09 |
| JP3126895B2 (en) | 2001-01-22 |
| GB9516541D0 (en) | 1995-10-11 |
| SG54971A1 (en) | 1998-12-21 |
| GB2292847B (en) | 1998-05-06 |
| JPH08126363A (en) | 1996-05-17 |
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