JP3703346B2 - Air conditioner - Google Patents

Air conditioner Download PDF

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Publication number
JP3703346B2
JP3703346B2 JP27036299A JP27036299A JP3703346B2 JP 3703346 B2 JP3703346 B2 JP 3703346B2 JP 27036299 A JP27036299 A JP 27036299A JP 27036299 A JP27036299 A JP 27036299A JP 3703346 B2 JP3703346 B2 JP 3703346B2
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Japan
Prior art keywords
compressor
pressure switch
current
step
high pressure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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JP27036299A
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Japanese (ja)
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JP2001091022A (en
Inventor
政也 板垣
昭裕 甲斐
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三菱電機株式会社
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Priority to JP27036299A priority Critical patent/JP3703346B2/en
Publication of JP2001091022A publication Critical patent/JP2001091022A/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B49/00Arrangement or mounting of control or safety devices
    • F25B49/005Arrangement or mounting of control or safety devices of safety devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/70Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83Control 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00Control inputs relating to system states
    • F24F2140/10Pressure
    • F24F2140/12Heat-exchange fluid pressure
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00Control inputs relating to system states
    • F24F2140/50Load
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B13/00Compression machines, plant or systems with reversible cycle
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B2700/00Sensing or detecting of parameters; Sensors therefor
    • F25B2700/15Power, e.g. by voltage or current
    • F25B2700/151Power, e.g. by voltage or current of the compressor motor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B49/00Arrangement or mounting of control or safety devices
    • F25B49/02Arrangement or mounting of control or safety devices for compression type machines, plant or systems
    • F25B49/022Compressor control arrangements

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an air conditioner.
[0002]
[Prior art]
FIG. 8 is a diagram showing a control device for a conventional air conditioner disclosed in, for example, Japanese Patent Laid-Open No. 9-14805. In the figure, a protection circuit 42, a relay contact 36, and a compressor magnet (between R and S in the figure) between any two phases of the three-phase AC power supply (R, S, T) of the air conditioner. An exciting coil 38 of an electromagnetic contactor for operating the compressor) is connected in series.
[0003]
The protection circuit 42 includes a blower internal thermo switch (bimetal) 24, a compressor internal thermo switch (bimetal) 26, and a high voltage 28 connected in series.
[0004]
A photocoupler (phototriac coupler, etc.) 44 as an optical coupler for signal transmission is connected in parallel with the relay contact 36 and the compressor magnet 38, and an abnormality detection signal from the photocoupler 44 is supplied to the microcomputer 46. . The microcomputer 46 opens and closes the relay contact 36.
[0005]
In the above circuit configuration, when the temperature of the blower motor becomes abnormal, the thermo switch 24 opens, and when the temperature of the compressor motor becomes abnormal, the thermo switch 24 opens and the temperature of the compressor motor becomes abnormal. Then, the protection switch 26 is opened, and when an abnormal high pressure is generated in the compressor, the high pressure switch 28 is opened. These three abnormal states may occur at the same time as well as when they occur independently. When any one of the thermo switches 24 and 26 and the high voltage switch 28 is opened, the protection circuit 42 is opened. Accordingly, energization to the compressor magnet 38 is stopped and the compressor is stopped.
[0006]
Next, an operation for discriminating an abnormal portion based on a difference in return times of the thermo switches 24 and 26 and the high pressure switch 28 when an abnormality of the air conditioner occurs will be described.
In FIG. 8, the photocoupler 44 is turned off in the following four cases.
(1) Instantaneous power failure (power supply between R and S is cut off)
(2) When the high pressure switch 28 of the compressor is opened (3) When the blower internal thermo switch 24 is opened (4) When the compressor internal thermo switch 26 is opened [0007]
Here, in general, since the instantaneous power failure of (1) is within several milliseconds to several hundred milliseconds at the longest, the photocoupler 44 returns to the ON state one second after the instantaneous power failure occurs.
Also, is set differential is such that the high-pressure switch 28 is "open at 30 Kg / cm 2 (off), the return at 28.5 kg / cm 2 (ON)" normal (2). For this reason, even if the pressure in the compressor rises above 30 kg / cm 2 and the high pressure switch 28 opens and the compressor stops, the high pressure switch 28 does not return immediately, and the high and low pressures of the refrigerant circuit are reduced. By bypassing with a solenoid valve (see the bypass valve 30 in FIG. 9) and the pressure in the compressor is reduced to 28.5 kg / cm 2 , the high pressure switch 28 returns to the closed state, and this return is required. The time is a few seconds.
[0008]
On the other hand, the blower and compressor internal thermoswitches 24 and 26 of (3) and (4) do not return for several tens of minutes at least once they are opened (turned off).
Therefore, the microcomputer 46 determines which switch has been operated based on the abnormality detection signal from the photocoupler 44 using the difference in the return times of the thermoswitches 26 and 28.
[0009]
[Problems to be solved by the invention]
The conventional air conditioner is configured as described above, and as a means for determining which protection device has been activated, since it is determined by the return time of each thermo switch, there is a problem that it takes time to determine. there were.
[0010]
Also, one of the switches is activated and the compressor is stopped, and the microcomputer determines which switch is activated, but there is no means to indicate which switch has been activated due to which switch is activated. When performing maintenance, the efficiency was poor.
[0011]
Also, if the wiring between switches is disconnected or the wiring between switches is disconnected, the compressor magnet cannot be energized even if the main power is turned on and the air conditioner is operated. There was a problem that could not drive.
[0012]
The present invention has been made to solve such a problem, and an object thereof is to make it possible to determine the operation of a high-pressure switch in a short time.
[0013]
Another object of the present invention is to enable efficient maintenance when the high pressure switch is operated.
[0014]
It is another object of the present invention to enable efficient maintenance when a high pressure switch is abnormal.
[0015]
Another object of the present invention is to enable efficient maintenance when the current detection means of the compressor is abnormal.
[0016]
[Means for Solving the Problems]
An air conditioner according to the present invention includes a refrigerant circulation circuit that circulates refrigerant discharged from a compressor from a condenser to an evaporator, current detection means that detects an operating current of the compressor, and detection results of the current detection means From the microcomputer for determining the operating state of the compressor, the driving means for driving the compressor in response to the instruction from the microcomputer, and the electric circuit of the driving means inserted in series, based on the discharge pressure of the compressor The microcomputer includes an operating high pressure switch and a compressor control relay connected in series to the high pressure switch, and the microcomputer detects that the operating current of the compressor detected by the current detecting means is equal to or higher than the detected current value of the high pressure switch. If the microcomputer determines that the compressor operating current detected by the current detection means is less than the high-pressure pressure switch operation detection current value, And wherein the stopping the compressor by compressor control relay.
[0017]
Moreover, the display means which displays the driving | running state of a compressor based on the instruction | command from a microcomputer is provided.
[0027]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1 FIG.
Embodiment 1 of the present invention will be described below with reference to the drawings.
FIG. 1 is a diagram showing the first embodiment and is an overall configuration diagram of an air conditioner.
In the figure, reference numeral 1 denotes a compressor for compressing a refrigerant, which is a refrigerant circulation circuit in which the compressor 1, a four-way valve 2, a condenser 3, an electric expansion valve 4, and an evaporator 5 are sequentially connected in an annular manner through a refrigerant pipe. It constitutes the refrigeration cycle.
[0028]
Reference numeral 6 denotes an outdoor control board that controls the outdoor unit. Reference numeral 7 denotes an outdoor unit control microcomputer (also referred to as a microcomputer) mounted on the outdoor control board 6.
[0029]
Reference numeral 8 denotes a high pressure switch operated by the discharge pressure, and reference numeral 9 denotes a low pressure switch operated by the suction pressure. The operating state of the low pressure switch 9 is taken into the outdoor unit control microcomputer 7. Reference numeral 10 denotes a thermo switch that operates according to temperature. The operating state of the thermo switch 10 is taken into the outdoor unit control microcomputer 7.
[0030]
The electric expansion valve 4 is an electric expansion valve that controls the flow rate of the refrigerant, and is controlled based on a command from the outdoor unit control microcomputer 7.
[0031]
As the high-pressure side refrigerant temperature detecting means, a thermistor 11 for detecting the temperature of the refrigerant discharged from the compressor 1, a thermistor 12 for detecting the temperature of the condenser, and a thermistor 13 for detecting the temperature of the outlet of the condenser are provided. Information of the thermistors 11 to 13 is taken into the outdoor unit control microcomputer 7.
[0032]
14 is a monitor display unit which is a display means for displaying various types of information provided on the outdoor control board 6, and 15 is a penetrating wiring to be detected through the annular iron core, so that depending on the magnitude of the current flowing in the wiring, This is a current sensor which is a current detection means for detecting the operating current of the compressor 1 by using a method in which the magnitude of the induced electric power is changed by the mutual induction action, and is taken into the outdoor unit control microcomputer 7 via the conversion circuit 16. It is.
[0033]
Reference numeral 17a denotes a compressor control relay contact. The compressor control relay contact 17a and the compressor 1 are connected by a voltage applying wiring 18, and the commercial power source 21 is energized by opening and closing the compressor control relay contact 17a. Alternatively, the operation of the compressor 1 is controlled by shutting off. Further, any one of the voltage applying wires 18 to the compressor 1 is penetrated through the annular iron core of the current sensor 15.
[0034]
Reference numeral 17b denotes an exciting coil of a compressor control relay which is a driving means for driving the compressor 1. Reference numeral 19a denotes a control relay that controls application or cutoff of voltage to the excitation coil 17b of the compressor control relay, and reference numeral 19b denotes an excitation coil of the control relay 19a. The exciting coil 19b is controlled via the drive circuit unit 20 in accordance with a command from the outdoor unit control microcomputer 7.
[0035]
Here, the contact of the high pressure switch 8 is inserted in series between the wiring of the excitation coil 17b of the compressor control relay and the control relay 19a of the compressor control relay.
[0036]
The operation of the air conditioner configured as described above will be described with reference to the flowchart shown in FIG.
First, when the air conditioner is operated, the outdoor control microcomputer 7 reads in step 201 the temperature set by the remote controller connected to the indoor unit and the temperature detected by the indoor temperature detection thermistor. .
[0037]
Next, in step 202, the set temperature of the remote controller read in step 201 is compared with the temperature detected by the room temperature detection thermistor to determine whether the compressor 1 is in operating condition.
[0038]
If the compressor 1 is not in the operating condition in step 202, the process returns to step 201, and the temperature set by the remote controller connected to the indoor unit and the temperature detected by the indoor temperature detection thermistor are used again. 7 reads.
[0039]
If the compressor 1 is in the operating condition at step 202, the compressor 1 is operated at step 203.
[0040]
Next, in step 204, it is determined whether or not the operating current of the compressor 1 detected by the current sensor 15 is equal to or lower than the high pressure switch operation detection current value.
[0041]
In step 204, when the operating current of the compressor 1 detected by the current sensor 15 is equal to or higher than the high pressure switch operation detection current value, the process returns to step 203 and the operation of the compressor 1 is continued.
[0042]
If the operation current of the compressor 1 detected by the current sensor 15 is equal to or lower than the high pressure switch operation detection current value at step 204, the compressor 1 is stopped at step 205.
[0043]
As a result, it is possible to determine whether or not the high pressure switch 8 is activated from the detection result of the current sensor 15.
[0044]
In the above embodiment, FIG. 1 shows a method using a three-phase commercial power source as a method of applying voltage to the compressor 1 (commercial power source 21). However, the same applies to a single-phase commercial power source. An effect is obtained.
[0045]
Embodiment 2. FIG.
Embodiment 2 of the present invention will be described below with reference to the drawings.
FIGS. 3 and 4 are diagrams showing the second embodiment. FIG. 3 is a flowchart of a method for displaying an operation state on the monitor display unit when the operation of the high pressure switch is detected, and FIG. 4 is a display content of the monitor display unit. It is a figure which shows an example. In addition, the whole structure of an air conditioner is the same as FIG.
[0046]
Hereinafter, the operation of the air conditioner according to Embodiment 2 will be described with reference to the flowchart of FIG.
First, when the air conditioner is operated, the outdoor control microcomputer 7 reads in step 301 the temperature set by the remote controller connected to the indoor unit and the temperature detected by the indoor temperature detection thermistor. .
[0047]
Next, in step 302, the set temperature of the remote controller read in step 301 is compared with the temperature detected by the room temperature detection thermistor to determine whether the compressor 1 is in operating condition.
[0048]
In step 302, if the compressor 1 is not in the operating condition, the process returns to step 301, and the temperature set by the remote controller connected to the indoor unit and the temperature detected by the indoor temperature detection thermistor are used again. The computer 7 reads.
[0049]
If the compressor 1 is in operating condition at step 302, the compressor 1 is operated at step 303, and the code indicating that the compressor 1 is operated at the next step 104 is displayed.
[0050]
Next, in step 305, it is determined whether the operating current of the compressor 1 detected by the current sensor 15 is equal to or lower than the high pressure switch operation detection current value.
[0051]
In step 305, when the operating current of the compressor 1 detected by the current sensor 15 is equal to or higher than the high pressure switch operation detection current value, the process returns to step 303 and the operation of the compressor 1 is continued.
[0052]
In step 305, when the operating current of the compressor 1 detected by the current sensor 15 is equal to or less than the high pressure switch operation detection current value, the compressor 1 is stopped in step 306.
[0053]
Next, at step 307, the fact that the high pressure switch 8 has been activated and the compressor 1 has been stopped is displayed by a code on the monitor display unit 14 as shown in FIG.
[0054]
As a result, the presence / absence of the operation of the high pressure switch 8 can be displayed on the monitor display unit 14 from the detection result of the current sensor 15, so that the efficiency of maintenance is increased.
[0055]
Embodiment 3 FIG.
Embodiment 3 of the present invention will be described below with reference to the drawings.
5, 6, and 7 are diagrams showing the third embodiment, and FIG. 5 shows that the wiring is disconnected or disconnected due to the temperature change of the current sensor and the discharge refrigerant temperature detection thermistor, and the wiring is not set correctly. Flow charts of detection methods for detection, FIGS. 6 and 7 are diagrams showing examples of display contents of the monitor display unit. In addition, the whole structure of an air conditioner is the same as FIG.
[0056]
Hereinafter, the operation of the air conditioner according to Embodiment 3 will be described with reference to the flowchart of FIG.
First, when the air conditioner is operated, the outdoor control microcomputer 7 reads in step 501 the temperature set by the remote controller connected to the indoor unit and the temperature detected by the indoor temperature detection thermistor. .
[0057]
Next, in step 502, the set temperature of the remote controller read in step 501 is compared with the temperature detected by the room temperature detection thermistor to determine whether the compressor 1 is in operating condition.
[0058]
In step 502, if the compressor 1 is not in the operating condition, the process returns to step 501, and the temperature set by the remote controller connected to the indoor unit and the temperature detected by the indoor temperature detection thermistor are used again. The computer 7 reads.
[0059]
If the compressor 1 is in operating condition at step 502, the temperature (T0) of the discharged refrigerant temperature detecting thermistor 11 is taken at step 503, and the compressor 1 is operated at step 504. In step 505, the fact that the compressor 1 has been operated is displayed as a code.
[0060]
Next, in step 506, a timer t1 for operating the compressor 1 for a predetermined time is set.
[0061]
Next, in step 507, the timer t1 for the predetermined time operation of the compressor 1 set in step 506 is decremented.
[0062]
Next, in step 508, it is determined whether or not the operation (t1) of the compressor 1 for a predetermined time has been completed. If it is determined in step 508 that the operation of the compressor 1 has not been completed for a predetermined time, the operation of the compressor 1 is continued in step 509 and the process returns to step 507.
[0063]
If the operation of the compressor 1 for the predetermined time is completed in step 508, the temperature (T1) of the discharged refrigerant temperature detecting thermistor 11 after the completion of the operation (t1) for the predetermined time is taken in step 510.
[0064]
Next, in step 511, the temperature (T0) of the discharged refrigerant temperature detecting thermistor 11 taken in in step 503 and the temperature (T1) of the discharged refrigerant temperature detecting thermistor 11 taken in in step 510 are obtained. Compare.
[0065]
If T0 <T1 in step 511, it is determined in step 512 whether the operating current of the compressor 1 detected by the current sensor 15 is equal to or less than the high pressure switch activation detection current value. If it is not less than the high pressure switch operation detection current value, the operation of the compressor 1 is continued in step 513.
[0066]
If the operating current of the compressor 1 is equal to or lower than the high pressure switch operation detection current value at step 512, the compressor 1 is stopped at step 514, and the monitor display is shown at step 515 as shown in FIG. An error state is displayed on the unit 14 assuming that the wiring is not normally set in the current sensor 15.
[0067]
If T0 <T1 is not satisfied in step 511, it is determined in step 516 whether or not the operating current of the compressor 1 detected by the current sensor 15 is equal to or lower than the high pressure switch operation detection current value. If it is not less than the high pressure switch activation detection current value, the process returns to step 503.
[0068]
If the operating current of the compressor 1 is equal to or lower than the high pressure switch activation detection current value at step 516, the compressor 1 is stopped at step 517, and the monitor display unit is displayed at step 518 as shown in FIG. 14, the error state is displayed as disconnection or disconnection of the wiring of the electric circuit to which the contact of the high pressure switch 8 and the excitation coil 17b of the compressor control relay are connected.
[0069]
As a result, it is possible to determine that the wiring is disconnected or disconnected, or that the wiring is not normally set in the current sensor, and an error state can be displayed on the monitor display.
[0070]
In the above-described embodiment, whether the refrigerant temperature has changed is determined by the temperature detected by the discharged refrigerant temperature detection thermistor 11, but the condenser temperature detection thermistor 12 or the outlet temperature of the condenser is determined as follows. Even when the temperature is detected by the temperature detected by the detection thermistor 13, the same effect can be obtained.
[0071]
【The invention's effect】
In the air conditioner according to the present invention, when the high pressure switch is activated and the compressor is stopped, the operation of the high pressure switch is very short by determining whether the high pressure switch is activated or not from the result of the current detection means. Can be judged by time.
[0072]
In addition, when the high pressure switch is activated and the compressor is stopped is displayed on the display means, the efficiency of maintenance is increased.
[Brief description of the drawings]
FIG. 1 is a diagram illustrating Embodiments 1 to 3, and is an overall configuration diagram of an air conditioner.
FIG. 2 is a diagram showing the first embodiment and is a flowchart of a method for detecting the operation of the high pressure switch.
FIG. 3 shows the second embodiment, and is a flowchart of a method for displaying an operation state on a monitor display unit when the operation of a high pressure switch is detected.
FIG. 4 is a diagram illustrating the second embodiment and illustrating an example of display contents on a monitor display unit.
FIG. 5 is a diagram showing a third embodiment, and is a flowchart of a detection method for detecting disconnection or disconnection of a wiring, and that the wiring is not normally set due to a temperature change of a current sensor and a discharge thermistor temperature detection thermistor. FIG.
6 is a diagram illustrating the third embodiment and is a diagram illustrating an example of display contents of a monitor display unit. FIG.
7 is a diagram illustrating the third embodiment and is a diagram illustrating an example of display contents of a monitor display unit. FIG.
FIG. 8 is a circuit diagram of a conventional protection device for an air conditioner.
FIG. 9 is a refrigeration cycle diagram of a conventional air conditioner.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Compressor, 2 Four way valve, 3 Condenser, 4 Electric expansion valve, 5 Evaporator, 6 Outdoor unit control board, 7 Outdoor unit control microcomputer, 8 High pressure switch, 9 Low pressure switch, 10 Thermo switch, 11 Discharge Refrigerant temperature detection thermistor, 12 Condenser temperature detection thermistor, 13 Condenser outlet temperature detection thermistor, 14 Monitor display unit, 15 Current sensor, 16 Conversion circuit, 17a Compressor control relay contact, 17b Compressor control relay Excitation coil, 18 voltage application wiring, 19a control relay, 19b excitation coil, 20 control relay drive circuit, 21 commercial power source.

Claims (2)

  1. A refrigerant circuit that circulates refrigerant discharged from the compressor from the condenser to the evaporator;
    Current detecting means for detecting an operating current of the compressor;
    From the detection result of this current detection means, a microcomputer for determining the operating state of the compressor,
    In response to a command from the microcomputer, driving means for driving the compressor;
    A high-pressure switch inserted in series in the electric circuit of the drive means and operating based on the discharge pressure of the compressor;
    A compressor control relay connected in series to the high pressure switch, and the microcomputer determines that the operating current of the compressor detected by the current detection means is equal to or higher than the detected current value of the high pressure switch. If the microcomputer determines that the operation current of the compressor detected by the current detection means is equal to or lower than the high-pressure pressure switch operation detection current value, the compressor is controlled by the compressor control relay. An air conditioner characterized by stopping the operation.
  2.   The air conditioner according to claim 1, further comprising display means for displaying an operating state of the compressor based on a command from the microcomputer.
JP27036299A 1999-09-24 1999-09-24 Air conditioner Expired - Lifetime JP3703346B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP27036299A JP3703346B2 (en) 1999-09-24 1999-09-24 Air conditioner

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP27036299A JP3703346B2 (en) 1999-09-24 1999-09-24 Air conditioner
EP00307919A EP1087184B1 (en) 1999-09-24 2000-09-13 Air conditioner
ES00307919T ES2241555T3 (en) 1999-09-24 2000-09-13 Air conditioner device.
CNB001288830A CN1135337C (en) 1999-09-24 2000-09-22 Air conditioner

Publications (2)

Publication Number Publication Date
JP2001091022A JP2001091022A (en) 2001-04-06
JP3703346B2 true JP3703346B2 (en) 2005-10-05

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JP27036299A Expired - Lifetime JP3703346B2 (en) 1999-09-24 1999-09-24 Air conditioner

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EP (1) EP1087184B1 (en)
JP (1) JP3703346B2 (en)
CN (1) CN1135337C (en)
ES (1) ES2241555T3 (en)

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CN1135337C (en) 2004-01-21
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ES2241555T3 (en) 2005-11-01
EP1087184A2 (en) 2001-03-28

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