CN1124838A - Air conditioner - Google Patents
Air conditioner Download PDFInfo
- Publication number
- CN1124838A CN1124838A CN95116121A CN95116121A CN1124838A CN 1124838 A CN1124838 A CN 1124838A CN 95116121 A CN95116121 A CN 95116121A CN 95116121 A CN95116121 A CN 95116121A CN 1124838 A CN1124838 A CN 1124838A
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- China
- Prior art keywords
- temperature
- compressor
- voltage
- motor
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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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/024—Compressor control by controlling the electric parameters, e.g. current or voltage
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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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2115—Temperatures of a compressor or the drive means therefor
- F25B2700/21156—Temperatures of a compressor or the drive means therefor of the motor
Abstract
Provided is to start a motor smoothly without consuming an electric power uselessly when a temperature in the vicinity of the arranged site of a compressor is low. A voltage, supplied to a compressor motor 106 upon starting the compressor motor 106, is increased so as to be higher than a voltage supplied upon usual starting when a detecting temperature in the vicinity of a compressor 26, which is detected by a compressor temperature thermistor 110C, is lower than a predetermined temperature.
Description
The present invention relates to air conditioner, particularly have motor and the air conditioner that utilizes this compressors driven.
So far the known air conditioner of people have be separately positioned on indoor and outdoors by cold-producing medium carry out heat exchange a pair of heat exchanger, cold-producing medium is carried out compressor for compressing, switches the cross valve of circulating direction of cold-producing medium and capillary etc., utilize the switching etc. of cross valve under various operation modes such as heating installation, cold air, dehumidifying, to carry out air conditioning.
The compressor that is installed in inside such as domestic air conditioner nearly all is to obtain the driving force that is used to compress from motor.Yet, when electric motor starting and when running because this motor produces vibration and sound, so, above-mentioned motor and all be arranged in the outdoor unit usually from the compressor that motor obtains driving force.
But, if adopt said structure, just be arranged on compressor in the outdoor unit and motor be placed in the approaching temperature environment of outside air temperature in, particularly to winter just be in the very low environment of temperature.Under low temperature environment, the resistance value of the drive coil of motor will increase, and in addition, the viscosity of the lubricating oil of the lubricated usefulness of movable member in the compressor also be increased.Therefore, the environment temperature of tube compressor is not how, when electric motor starting, supply with in the air conditioner of certain voltage, when the environment temperature of compressor is hanged down, the electric current that flows through in the drive coil will reduce, in addition, because the viscous drag of lubricating oil increases, the needed torque of electric motor starting also increases, so might take place can not be with the situation of electric motor starting.The swash of wave in order to reduce to start particularly, a significant tendency is set starting voltage lower exactly.
In addition, in order to address this problem, the voltage that has also occurred just will supplying with motor when electric motor starting is failed improves some, makes electric motor starting once more, tentative so repeatedly air conditioner.But, owing to when low temperature, start motor is tentative repeatedly, so, when electric motor starting, to waste electric power, simultaneously, make the actual starting of motor get up to need the regular hour.
Therefore, in view of the above fact, the air conditioner of not wasting electric power and motor being started smoothly when the object of the present invention is to provide a kind of temperature around low.
In order to achieve the above object, the described air conditioner of a first aspect of the present invention is characterised in that: have motor, compressor, temperature-detecting device and control device.Compressor is by above-mentioned motor-driven; Temperature-detecting device is used to detect near the temperature in installation position of above-mentioned compressor; When control device is used for the temperature that detects when the said temperature checkout gear less than assigned temperature, the magnitude of voltage of the temperature that the voltage of supplying with this motor when controlling above-mentioned electric motor starting is higher than above-mentioned detection during greater than above-mentioned assigned temperature.
In addition, the described air conditioner of a second aspect of the present invention is characterised in that: in the described air conditioner of a first aspect of the present invention, the temperature that above-mentioned control device detects at the said temperature checkout gear is during less than assigned temperature, and the voltage of supplying with this motor when controlling above-mentioned electric motor starting reduces along with the temperature of above-mentioned detection and raises.
In air conditioner of the present invention, temperature-detecting device detects near the temperature in installation position of compressor.When this detected temperatures during less than assigned temperature, the starting voltage when control device makes the voltage ratio detected temperatures of supplying with this motor be higher than assigned temperature when electric motor starting is also high.Usually, when near the temperature the compressor installation position is low, because the resistance value of the drive coil of the motor of this compressor of driving increases, so the electric current that flows through in the drive coil reduces, and, because the viscosity of the lubricating oil in the compressor increases, so, the needed torque of electric motor starting is also increased, still, as mentioned above, by improving the voltage of supplying with this motor when the electric motor starting, just can avoid the driving torque of motor to reduce, thereby can avoid the starting failure of motor.Therefore, owing to needn't carry out the starting of motor repeatedly, so, can not waste electric power when temperature is low around yet and make electric motor starting smoothly.
In addition, when detected temperatures is higher than assigned temperature, the starting voltage the when starting voltage of control device control supply motor is lower than detected temperatures less than assigned temperature.Therefore, no matter compare with the situation how detected temperatures all is set at starting voltage certain high numerical value, can conservation of power, and the swash of wave can reduce to start the time.
The big motors of the sort of output such as motor for the drive compression machine that uses in the large-size air conditioning machine is used under normal conditions, also need very big torque during electric motor starting, thereby need to supply with high voltage.Therefore, along with near the temperature the compressor installation position reduces, the drive current of above-mentioned the sort of motor to reduce and start the influence that needed torque increases very big, so, if apply the present invention to export big motor, will show effect of the present invention significantly.
Usually, along with near the temperature the compressor installation position reduces, the resistance value of the drive coil of motor increases, and the viscosity of the lubricating oil in the compressor also increases.Therefore, along with near the temperature the compressor installation position reduces, the needed service voltage of electric motor starting also increases.
Therefore, as described in a second aspect of the present invention, the temperature that detects when temperature-detecting device is during less than assigned temperature, supply with the voltage of this motor during control device control electric motor starting, it is raise along with the reduction of this detected temperatures, more particularly, be exactly best reduction along with detected temperatures, slowly improve or improve continuously voltage step by step.
It is that boundary divides 2 grades to change the voltage condition of supplying with motor that a first aspect of the present invention also comprises with the assigned temperature, but, at this moment, in order under the very low environment of temperature, also to make the electric motor starting success, voltage equates in the time of must setting very lowly with temperature than the voltage under the lower slightly temperature of this assigned temperature, that is, must be set at the high voltage that under the very low environment of temperature, also can make electric motor starting.On the other hand, as mentioned above, when improving the voltage of supplying with motor along with the detected temperatures reduction, because it is very little with the temperature difference of assigned temperature, though so littler than the difference of voltage under the lower slightly temperature of this assigned temperature and the voltage under the assigned temperature,, this voltage also can make electric motor starting reliably.According to above-mentioned situation, the voltage of supplying with motor changes this voltage condition and compares by 2 grades of these voltage condition of change along with the reduction of detected temperatures, in very wide temperature range, can finish with lower voltage, so, the power consumption that makes electric motor starting can further be reduced.
Fig. 1 is the refrigerant loop figure of the air conditioner in the embodiments of the invention.
Fig. 2 is the circuit diagram of the indoor units of air conditioner.
Fig. 3 is the circuit diagram of the outdoor unit of air conditioner.
Fig. 4 is the simple structure chart of compressor and compressor electric motor.
Fig. 5 is the simple structure chart of compressor and discharge chambe periphery
Fig. 6 is the sketch of the winding connection of compressor electric motor.
Fig. 7 is the flow chart of control program.
Fig. 8 is the corresponding relation curve map between the starting voltage of near the compressor installation position of reference in the control of present embodiment temperature and motor.
Fig. 9 is the corresponding relation curve map that can use between the starting voltage of near the compressor of the present invention installation position temperature and motor.
The 10-indoor units
The outdoor unit of 12-
The 26-compressor
The 72C-microprocessor
The 102F-microprocessor
106-compressor electric motor (motor)
110C-compressor temperature thermistor (temperature-detecting device)
Below, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
As shown in Figure 1, the air conditioner of present embodiment comprises indoor units 10 and outdoor unit 12, simultaneously, is provided with the refrigeration cycle that makes the cold-producing medium circulation in indoor units 10 and outdoor unit 12.
In indoor units 10, be provided with indoor heat converter 16.Near this indoor heat converter 16, be provided with the fan 17 that makes wind pass through indoor heat converter 16 air-supply usefulness by the described fan electromotor 70E driving in back.
Outdoor heat converter 28 is connected with valve 32 with screen pack 42 by capillary 30, simultaneously, is connected between silencer 38 and the cross valve 36 by magnetic valve 40.And valve 32 is connected with indoor heat converter 16 by the refrigerant piping 34 that constitutes with tubule, and like this, the refrigerant circulation loop that just forms sealing is a kind of refrigeration cycle.Near outdoor heat converter 28, be provided with the fan 29 that makes wind pass through outdoor heat converter 28 air-supply usefulness by the described fan electromotor 112A driving in back.
Shown in Figure 2 is the circuit of indoor units 10, and this circuit has power supply board 70 and control substrate 72.The serial circuit power circuit 70D of the electrical power that the control circuit that be provided with drive circuit 70A, the motor power circuit 70B that generates the electrical power that is used for drive motors that adjustment connects to the fan electromotor 70E of indoor air output (dc brushless motor) on power supply board 70, generates the electrical power that control circuit uses is used with power circuit 70C and generation serial circuit.
Therefore, by changing the galvanic voltage of supplying with to drive circuit 70A from motor power circuit 70B, just the revolution that can regulate fan electromotor 70E arbitrarily by microprocessor is the air output of air-supply arrangement.In the present embodiment, for example in the scope of 12V-36V, be divided into 256 grades of these voltages of control.
Be provided with the drive circuit 72B of the serial circuit 72A that is connected with power circuit with serial circuit, drive motors on the substrate 72 and as the microprocessor 72C of control circuit in control.Stepper motor 74A, the stepper motor 74B that left and right sides wind deflector is used that the moving up and down wind deflector up and down of wind deflector is used, 74C and change stepper motor 74D that the direction of the floor temperature sensor of detection surface temperature uses etc. and all be connected with drive circuit 72B.These stepper motors are by the signal controlling angle of rotation of microprocessor 72C.
In addition, microprocessor 72C is made of not shown CPU, RAM, ROM, input and output control part etc.The demonstration that is located at demonstration operation mode on the display base plate 76 etc. is with LED and receive that be connected and the floor temperature sensor that be located at the detection surface temperature on the sensor base plate 78 of the receiving circuit of operation signal of remote controller and all be connected with this microprocessor 72C with optical sensor.And, detect the temperature sensor 80A of room temperature, the heat exchanger that detects the temperature of indoor heat converter 16 all is connected with microprocessor 72C with temperature sensor 80B, the self diagnosis that is located at simultaneously on the switch substrate 82 also is connected with microprocessor 72C with self-diagnostic switch with LED, the change-over switch that switches to common running and test running.
Fig. 3 is the circuit of outdoor unit 12, and this circuit has rectification circuit 100 and control substrate 102.In addition, the circuit of outdoor unit 12 by with 1.～circuit of indoor units 10 among a plurality of terminals of 3. representing and Fig. 2 is connected.
On control substrate 102, be provided with indoor units 10 in the serial circuit 102A that is connected with power circuit 70D of serial circuit, eliminate the noise filter 102B of noise, 102C, generates the conversion electric power circuit 102E of the electrical power be used to change phase inverter 104 and as the microprocessor 102F of control circuit at 102D.This microprocessor 102F by not shown CPU, RAM, ROM, and input and output control part etc. constitute, and serial circuit 72A and serial circuit 102A by indoor units 10, the control signal that sends according to the microprocessor 72C from indoor units 10, control are supplied with frequency (18Hz～150Hz) and the action of each machine of the alternating current of compressor.
Phase inverter 104 is connected with conversion electric power circuit 102E, and compressor electric motor 106 from driving force to the compressor 26 of compressed refrigerant that supply with is connected with phase inverter 104.
In addition, as the outdoor temperature thermistor 110A of the outdoor temperature sensor that detects outdoor temperature, as the coil temperature thermistor 110B of the coil temperature sensor of the temperature of sensing chamber's outer heat-exchanger 28, also be connected with microprocessor 102F as the compressor temperature thermistor 110C of the temperature sensor of the temperature that detects compressor etc.In addition, cross valve 36 is connected with outdoor unit 12 with magnetic valve 40.112A is a fan electromotor, and 112B is the fan electromotor capacitor.
If adopt this air conditioner, then under the state of closing magnetic valve 40, switch cross valve 36, make cold-producing medium carry out circulation time according to the order of indoor heat converter 16, refrigerant piping 18, valve 20, silencer 22, cross valve 36, accumulator 24, compressor 26, silencer 38, cross valve 36, outdoor heat converter 28, capillary 30, screen pack 42, valve 32, refrigerant piping 34 and indoor heat converter 16, because cold-producing medium evaporation in indoor heat converter 16, and condensation of refrigerant in outdoor heat converter 28, so, can be to the indoor cold air that provides.In addition, if make cold-producing medium along with above-mentioned opposite direction circulation time, condensation of refrigerant in indoor heat converter 16 then, cold-producing medium evaporation in outdoor heat converter 28, so, can be to the indoor heating installation that provides.
When heating installation turns round, by magnetic valve 40 is opened, make in a part of inflow outdoor heat exchanger 28 of the high temperature refrigerant of discharging from compressor 26, can improve the temperature of outdoor heat converter 28, make it be difficult for frosting.
As shown in Figure 4, the compressor 26 of present embodiment is fitted in the casing 120 with compressor electric motor 106 integral installations that drive this compressor 26.Compressor 26 is located at the bottom in the casing 120, and compressor electric motor 106 is located at the substantial middle portion in the casing 120.
Compressor electric motor 106 is by the rotating shaft 130 that driving torque is passed to compressor 26 usefulness, constitute with rotor 132, stator 128 and the winding 126 on stator 128 of rotating shaft 130 unitary rotation.Slightly be the central portion that rotor 132 cylindraceous is located at casing 120, its rotary middle spindle is provided with along the vertical direction.Rotating shaft 130 is fixed on the central part of rotor 132, and the central shaft of the central shaft of above-below direction and rotor 132 is consistent with each other, and the described bottom that the casing 120 of compressor 26 is set is grown to the back in the court of a feudal ruler always.The stator 128 that is provided with from every side rotor 132 being surrounded, its outside is fixed on the inwall of casing 120, leaves very little gap between the side of its inner surface and stator 128.
In addition, as shown in Figure 6, above-mentioned compressor motor 106 is three phase winding 126A, 126B, 126C connect into the acute direct current generator of nothing of star, by in order voltage being supplied with 3 contact A, B between 2 contacts among the C, and supplies with rotor 132 and rotating shaft 130 with driving torque.Promptly, at first voltage is supplied with between contact A and the contact B, through after the fixed time voltage is supplied with between contact B and the contact C, through after the fixed time voltage is supplied with between contact C and the contact A again, by changing the winding that is supplied to voltage in order, driving torque is supplied with rotor 132 and rotating shaft 130.
To above-mentioned winding service voltage, the turned position of rotor 132 was consistent with the time, so, the turned position of necessary detection rotor 132.Usually, the position probing of the rotor of brshless DC motor utilizes the Hall element that is made of the n type semiconductor that adopts InSb (indium antimonide) to detect mostly.But, because Hall element poor heat resistance, at high temperature misoperation might take place, so, detect the induced voltage that causes by electromagnetic induction in another winding the winding except that between 2 contacts that are supplied to voltage in the present embodiment, according to the turned position of this inductive voltage value detection rotor 132.
In compressor 26, be provided with 2 cylinders 142,150 that form the discharge chambe that the described compressed refrigerants in back use.Be provided with bearing 136 between cylinder 142 and above-mentioned rotor 132, above-mentioned rotating shaft 130 is passed from this bearing 136.In addition, be provided with bearing 152 between the bottom surface of cylinder 150 and casing 120, this bearing 152 is also passed in above-mentioned rotating shaft 130.Between 2 cylinders 142,150, be provided with dividing plate 144, from above-below direction cylinder 142 be clipped in the middle, thereby in cylinder 142, form discharge chambe by dividing plate 144 and bearing 136.
As shown in Figure 5, in cylinder 142 cylindraceous, as mentioned above, rotating shaft 130 is passed from the center, and eccentric part 138 is fixed in this rotating shaft 130 prejudicially, roller 140 is fixed on the outside of eccentric part 138 again.The outer surface of roller 140 contacts with the inner peripheral surface of cylinder 142.Space between the inner peripheral surface of the outer peripheral face of this roller 140 and cylinder 142 constitutes the discharge chambe 170 of compressed refrigerant.In addition, on cylinder 142, be provided with cold-producing medium is sucked the suction inlet 174 used in the discharge chambe 170, cold-producing medium is discharged the outlet 178 of usefulness in the discharge chambe 170 and regulates the dump valve 180 that the discharge rate of cold-producing medium is used.The blade 172 that fixedly is located on the not shown spring in the groove 176 contacts with roller 140 under the pressure effect of this spring.Like this, discharge chambe 170 just is divided into 2 parts, the right half part that the cold-producing medium that promptly is divided into suction in Fig. 5 is compressed by roller 140 and become the left-half that the cold-producing medium that compressed leads to the path of outlet 178.
In addition, cylinder 150 also is clipped in the middle from above-below direction by dividing plate 144 and bearing 152, therefore lacks in 150 at vapour to form discharge chambe.In the discharge chambe of this cylinder 150, be provided with respect to the eccentric axis of rotating shaft 130 the discoid eccentric part 148 fixed and the annular rollers 146 that is fixed on the peripheral part of eccentric part 148.Above-mentioned eccentric part 138 and eccentric part 148 are fixed on the position with respect to rotating shaft 130 symmetries, rotate with rotating shaft 130 with the phasic difference of 180 degree.
Attracting the suction tube 154,156 of usefulness to be located at vapour respectively in discharge chambe cold-producing medium lacks on 142,150.The cold-producing medium that reception is discharged from the described outlet 178 in back (referring to Fig. 5) that is located on the cylinder 142 slightly be the bottom that funnelform discharge silencer 158 is arranged to cover from the top bearing 136.In addition, the discharge silencer 160 that slightly is the dish shape that receives the cold-producing medium of discharging from the not shown outlet that is located on the cylinder 150 is located at the bottom of bearing 152.The bypass pipe 134 that uses as the path of the cold-producing medium that leads to central portion from the bottom of casing 120 is located at the outside of casing 120, and the mouth of pipe at these bypass pipe two ends connects from the sidewall of casing 120.The discharge pipe 122 of cold-producing medium is located at the upper central portion of casing 120.Above-mentioned discharge silencer 158 and discharge silencer 160 use not shown pipeline to be communicated with bypass pipe 134, and this bypass pipe 134 also uses not shown pipeline to be communicated with discharge pipe 122.
In addition, on casing 120, also be provided with 3 terminal 124A to above-mentioned compressor electric motor 106 power supply usefulness.124B, 124C and the compressor temperature thermistor 110C that had illustrated.
Below, the working condition of present embodiment is described.
When receiving the signal of the indication air conditioner entry into service that sends from remote controller, carry out control program shown in Figure 7.This control program is carried out in the microprocessor 102F of outdoor unit 12.
At S200, read in by near the temperature T the compressor installation position of compressor temperature thermistor 110C detection, then at S202, judge that whether temperature T is less than assigned temperature T
1
When temperature T is higher than assigned temperature T
1The time, enter S206, be set at voltage when common as the starting voltage of compressor electric motor 106, and enter S208, on the other hand, when temperature T less than assigned temperature T
1The time, just enter S204, read starting voltage V with the corresponding compressor electric motor of temperature T according to the corresponding curve (block curve shown in Figure 8) between the starting voltage of near the temperature the compressor installation position that is stored in the not shown ROM that is assembled in the microprocessor 72C and compressor electric motor
2, with this voltage V
2Be set at the starting voltage of compressor electric motor 106, enter S208 then, above-mentioned voltage V
2Be set at the voltage V that is higher than when common
1Numerical value.
At S208, will supply with the winding 126 of compressor electric motor 106 in the starting voltage of above-mentioned S204 or S206 setting, start.Like this, the just rotation of the R direction in Fig. 5 of the rotating shaft 130 of compressor electric motor 106, meanwhile, roller 140 is contacting slidably to the R direction with the inner peripheral surface of cylinder 142 and is rotating prejudicially.
At this moment, cold-producing medium enters in the compressor 26 from suction tube shown in Figure 4 154,156.The suction inlet 174 of cold-producing medium from Fig. 5 that attracts from suction tube 154 enters in the discharge chambe 170, by the eccentric rotary of above-mentioned roller 140, compressed by the outer peripheral face of roller 140 and the inner peripheral surface of cylinder 142.After the compression, the cold-producing medium just left-half in Fig. 5 moves, and is discharged outside discharge chambe by dump valve 180 adjusted outlets 178 from openings of sizes.The cold-producing medium of discharging is discharged outside casing 120 from discharge pipe 122 by not shown pipeline and bypass pipe 134 by after discharging silencer 158 again.The cold-producing medium that attracts from suction tube 154, is discharged outside casing 120 from discharge pipe 122 by same route after also being compressed in the not shown discharge chambe in cylinder 150 with above-mentioned the same.
And,, carry out operation of air conditioner with revolution with the indication correspondence that is located at the microprocessor 72C in the indoor units 10 at S210.In more detail, be exactly that microprocessor 72C carries out fuzzy operation according to the temperature difference of target temperature and room temperature and the variable quantity of this temperature difference, calculate the variable quantity of the running ability (frequency) of compressor 26, and the variable quantity of this running ability is sent to the microprocessor 102F of outdoor unit 12 by interface circuit and holding wire.In addition, the microprocessor 102F of outdoor unit 12 frequency that will supply with the alternating current of compressor 26 now adds that the alternating current of the new frequency after the frequency of this increase and decrease amount supplies with compressor 26.
Like this, according to target temperature and room temperature, the frequency of the alternating current of compressor 26 is supplied with in increase and decrease, obtains the running ability (frequency of alternating current) of keeping target temperature desired compression machine 26, keeps the running of compressor 26 with this running ability.In addition, when changing target temperature under this state, microprocessor 72C recomputates the variable quantity of the running ability of compressor 26, and sets and keep the needed running ability of target temperature (air conditioner load) (frequency).
As seen from the above description, near the temperature the compressor installation position is during less than assigned temperature, will be higher than the voltage V when common
1Voltage V
2Be set at the starting voltage of motor, so, can avoid the starting failure of motor, thereby can not waste electric power and actuating motor reposefully.
When near the temperature the compressor installation position during less than assigned temperature, as the starting voltage of motor and the magnitude of voltage of setting, be not limited to be taken as the value that changes step by step with variation of temperature like that shown in the solid line among Fig. 8 of above-mentioned explanation, get continually varying value like that shown in also can image pattern 9 with variation of temperature.In addition, also can be shown in the dotted line of Fig. 8 like that, change voltages with 2 grades, be boundary with the assigned temperature, less than this assigned temperature the time, improve magnitude of voltage.In above-mentioned the whole bag of tricks, change voltage condition by 2 grades shown in the dotted line among Fig. 8, its advantage is that control is simple.In addition, in contrast to this, change voltage condition step by step with variation of temperature shown in the solid line of Fig. 8, less than assigned temperature T
1The temperature T electric motor starting time service voltage V
2Less than shown in the dotted line of Fig. 8 change voltages by 2 grades the time voltage V
3So,, can save and magnitude of voltage (V
3-V
2) corresponding electric power, that is, can further reduce the power consumption of actuating motor.
In addition, in the present embodiment, the compressor that is provided with a plurality of discharge chambes is illustrated, still, the present invention also can be applied to have only the compressor of 1 discharge chambe.
In the present embodiment, as the motor of drive compression machine, enumerated the example that uses three-phase brushless dc motor, still, the present invention also can be applied to use the situation of other direct current generators or alternating current generator.
In addition, as shown in this embodiment, temperature-detecting device can use the temperature sensor that existing compressor is used in the air conditioner.Like this, than being set again, special-purpose temperature sensor has advantage of simple structure near compressor.In addition, in the present embodiment, enumerated the top example of the casing 120 of dress compressor 26 in temperature sensor is located at, still, the position that is provided with of temperature sensor is not limited to this situation.
According to a first aspect of the invention, has control device, when the detected temperature of using by near the temperature that detects the compressor installation position of temperature-detecting device during less than assigned temperature, the magnitude of voltage of the temperature that the voltage of supplying with this motor during this control device control electric motor starting is higher than above-mentioned detection during greater than assigned temperature, so, when near the temperature the compressor installation position is low, can avoids the driving torque of motor to reduce, thereby can avoid the failure of electric motor starting.Therefore, needn't try the starting of motor repeatedly, when temperature is low around, also can not waste electric power and actuating motor reposefully.
In addition, according to a second aspect of the invention, when the temperature that detects by temperature-detecting device during less than assigned temperature, the voltage of supplying with this motor during control device control electric motor starting reduces along with the temperature that detects and raises, so, to compare with to be boundary with the assigned temperature change above-mentioned voltage condition by 2 grades, the voltage of supplying with during electric motor starting in very wide temperature range can achieve the goal with lower numerical value, so, can further reduce the power consumption of actuating motor.
Claims (2)
1. air conditioner has motor, compressor, temperature-detecting device and control device, and compressor is driven by above-mentioned motor; Temperature-detecting device is used to detect near the temperature in installation position of above-mentioned compressor; Control device is used for when the temperature that is detected by the said temperature checkout gear during less than assigned temperature, the magnitude of voltage of the temperature that the voltage of supplying with this motor when controlling above-mentioned electric motor starting is higher than above-mentioned detection during greater than above-mentioned assigned temperature.
2. be characterised in that by the described air conditioner of claim 1: the temperature that detects when the said temperature checkout gear is during less than assigned temperature, and the voltage of supplying with this motor when above-mentioned control device is controlled above-mentioned electric motor starting reduces along with the temperature of above-mentioned detection and raises.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP223740/1994 | 1994-09-19 | ||
| JP6223740A JP2989490B2 (en) | 1994-09-19 | 1994-09-19 | Air conditioner |
| JP223740/94 | 1994-09-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1124838A true CN1124838A (en) | 1996-06-19 |
| CN1106551C CN1106551C (en) | 2003-04-23 |
Family
ID=16802955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95116121A Expired - Fee Related CN1106551C (en) | 1994-09-19 | 1995-09-18 | Air conditioner |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2989490B2 (en) |
| KR (1) | KR100374445B1 (en) |
| CN (1) | CN1106551C (en) |
| TW (1) | TW317930U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101523131B (en) * | 2006-11-13 | 2011-03-23 | 大金工业株式会社 | Heat exchanging system |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1089426C (en) * | 1997-03-10 | 2002-08-21 | 三菱电机株式会社 | Control device for refrigerator |
| JP4522202B2 (en) * | 2004-09-09 | 2010-08-11 | 三洋電機株式会社 | Air conditioner |
| KR101872844B1 (en) | 2014-10-02 | 2018-07-02 | 손희원 | Motor driving method for energy saving via margin power control |
| KR102345028B1 (en) * | 2021-05-25 | 2021-12-30 | (주) 투템디자인 | Support legs of furniture with seismic performance |
| CN115264927A (en) * | 2022-08-26 | 2022-11-01 | 宁波奥克斯电气股份有限公司 | Oil temperature heating system, air conditioner, control method of air conditioner and readable storage medium |
-
1994
- 1994-09-19 JP JP6223740A patent/JP2989490B2/en not_active Expired - Fee Related
-
1995
- 1995-02-16 TW TW086200344U patent/TW317930U/en unknown
- 1995-09-15 KR KR1019950030168A patent/KR100374445B1/en not_active IP Right Cessation
- 1995-09-18 CN CN95116121A patent/CN1106551C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101523131B (en) * | 2006-11-13 | 2011-03-23 | 大金工业株式会社 | Heat exchanging system |
Also Published As
| Publication number | Publication date |
|---|---|
| KR100374445B1 (en) | 2003-05-01 |
| CN1106551C (en) | 2003-04-23 |
| TW317930U (en) | 1997-10-11 |
| JPH0886518A (en) | 1996-04-02 |
| KR960011312A (en) | 1996-04-20 |
| JP2989490B2 (en) | 1999-12-13 |
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