CN101846414A - Aircondition and energy device - Google Patents

Aircondition and energy device Download PDF

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Publication number
CN101846414A
CN101846414A CN201010111031A CN201010111031A CN101846414A CN 101846414 A CN101846414 A CN 101846414A CN 201010111031 A CN201010111031 A CN 201010111031A CN 201010111031 A CN201010111031 A CN 201010111031A CN 101846414 A CN101846414 A CN 101846414A
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China
Prior art keywords
sensor
temperature
detected value
aircondition
abnormal
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Granted
Application number
CN201010111031A
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Chinese (zh)
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CN101846414B (en
Inventor
平田亮太
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Sanyo Electric Co Ltd
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Sanyo Electric Co Ltd
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Publication of CN101846414A publication Critical patent/CN101846414A/en
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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
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/32—Responding to malfunctions or emergencies
    • 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
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • 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
    • F25B49/005—Arrangement or mounting of control or safety devices of safety devices
    • 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
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
    • F25B2313/02741—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using one four-way valve
    • 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
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/031—Sensor arrangements
    • F25B2313/0314—Temperature sensors near the indoor heat exchanger
    • 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
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/031—Sensor arrangements
    • F25B2313/0315—Temperature sensors near the outdoor heat exchanger
    • 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
    • F25B2700/2106—Temperatures of fresh outdoor air

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention provides a kind of unusual aircondition and energy device that can detect each sensor that is arranged on aircondition or the energy device in advance.Aircondition (100) possesses and connects compressor (15) successively, cross valve (18), outdoor heat converter (19) and indoor heat converter (26) and the refrigerant loop (10) that forms and comprising is used for the refrigerant condition that the state to cold-producing medium detects and detects usefulness sensor (SP, ST) at interior a plurality of sensors, detected value based on each sensor, carry out operation of air conditioner, this aircondition (100) is provided with abnormality juding portion (65), this abnormality juding portion (65) is after operation of air conditioner stops, when cold-producing medium returns stable state, compare each sensor (SP mutually, ST) detected value is judged each sensor (SP, ST) have no abnormal.

Description

Aircondition and energy device
Technical field
The present invention relates to the fluid of regulations such as cold-producing medium is added energy and the aircondition and the energy device that carry out the work of regulations such as operation of air conditioner, especially relate to and possess described aircondition and the energy device that a plurality of sensors are arranged.
Background technology
Known have a following aircondition: a plurality of sensors that possess the refrigerant loop that connects compressor, cross valve, outdoor heat converter and indoor heat converter successively and form and the temperature and pressure of the cold-producing medium that circulates in described refrigerant loop is detected, and based on the detected value of each sensor, drive described compressor, carry out and the corresponding operation of air conditioner of air-conditioning load (for example, with reference to patent documentation 1).
In aircondition so, when broken string that produces sensor or short circuit,, detect the unusual of sensor from the sensor detected value of output abnormality clearly.For example, by be set at the refrigerant temperature sensors that makes the temperature that detects cold-producing medium as following for-46 degree when the broken string, for+110 degree, export the detected value of abnormal value during in short circuit as refrigerant temperature sensors, break or the fault of sensors such as short circuit thereby can detect.When detecting the fault of sensor, be notified to user or maintenance personal etc., carry out the replacing or the repairing of sensor.
Patent documentation 1: Japanese kokai publication hei 08-159567 communique
But various sensors such as temperature sensor exist sensor characteristics to produce the situation of deviation because aging etc.When sensor characteristics produces deviation, can't correctly detect the temperature or the pressure of the cold-producing medium that becomes detected object etc.Carrying out in the operation of air conditioner based on the force value different or temperature value with reality, the problem that can't bring into play the desired heat pump performance of aircondition is arranged, and, have because superfluous running and problem that energy consumption increases.But, in existing aircondition,, thereby whether unusual can't judge by the detected value of sensor because the deviation of sensor characteristics is little etc., before reaching complete failure, sensor is difficult to detect the unusual of sensor.If the deviation of sensor characteristics hour can determine sensor have no abnormal, even then can as night or intermittent phase, stop repairing that to carry out sensor period or the replacing that operation of air conditioner does not bring obstacle yet.
Summary of the invention
The present invention In view of the foregoing provides a kind of unusual aircondition and energy device that can detect each sensor that is arranged on aircondition or the energy device in advance.
For achieving the above object, first mode of the present invention provides a kind of aircondition, this aircondition possesses and connects compressor successively, cross valve, outdoor heat converter and indoor heat converter and the refrigerant loop that forms and comprising is used for the refrigerant condition that the state to the cold-producing medium in the described refrigerant loop detects and detects with sensor at interior a plurality of sensors, detected value based on each sensor, drive described compressor, carry out operation of air conditioner, described aircondition is characterised in that, possesses abnormality juding portion, after described operation of air conditioner stops, when described cold-producing medium has returned stable state, this abnormality juding portion compares the detected value of each sensor mutually, and it is no abnormal to judge that each sensor has.
According to said structure, abnormality juding portion when cold-producing medium returns stable state, compares the detected value of each sensor mutually after operation of air conditioner stops, and it is no abnormal to judge that each sensor has.At this, if after operation of air conditioner stops, stopping to utilize compressor that cold-producing medium is compressed and promptly add energy, then state such as the temperature of cold-producing medium and on every side states such as temperature become stable state about equally.Therefore, when cold-producing medium returned stable state, the detected value of each sensor became and the corresponding value of state on every side.Therefore, the detected value of each sensor relatively can be judged to be the sensor of the detected value of the ambient state different conditions shown in the detected value of output expression and other sensor unusually, also the sensor of sensor characteristics deviation can be judged to be unusually.Thus,, before sensor reaches complete failure, just can detect the unusual of sensor in advance, can predict the fault of sensor as short-term fault or open circuit fault.
Second mode of the present invention is characterised in that, in first mode, the refrigerant pressure sensor that described refrigerant condition detects the refrigerant temperature sensors that detects with the temperature that comprises in the sensor described cold-producing medium and the pressure of described cold-producing medium is detected, described abnormality juding portion obtains the saturation temperature value of described cold-producing medium according to the detected value of described refrigerant pressure sensor, in temperature value, the detected value of more described each sensor mutually.
According to said structure, because detected value conversion saturation temperature value according to refrigerant pressure sensor, and in temperature value, the fiducial value that compares each sensor mutually, therefore even be arranged under the few situation of the number of the refrigerant pressure sensor on the aircondition, it is no abnormal that detected value that also can the C.T sensor judges that refrigerant pressure sensor has.
Third Way of the present invention is characterised in that, in first mode, the a plurality of pressure sensors that comprise a plurality of temperature sensors that the temperature to detected object detects in described a plurality of sensor and the pressure of detected object is detected, described abnormality juding portion is judging that described temperature sensor has when no abnormal, the detected value of described pressure sensor is got rid of from comparison other, and mutually relatively the detected value of each temperature sensor judge have no abnormal, judging that described pressure sensor has when no abnormal, the detected value of described temperature sensor is got rid of from comparison other, and mutually relatively the detected value of each pressure sensor to judge that each pressure sensor has no abnormal.
According to said structure, described abnormality juding portion is judging that temperature sensor has when no abnormal, because the detected value of pressure sensor is got rid of from comparison other, therefore the detected value that can save pressure sensor is converted into operations such as temperature value, and N/R determination processing can be arranged simply.Similarly, judging that pressure sensor has under the N/R situation because the detected value of temperature sensor is got rid of from comparison other, therefore mutually the comparative pressure value judge each other and simply have no abnormal.
Cubic formula of the present invention is characterised in that, in the arbitrary mode in first～Third Way, comprises in described a plurality of sensors and is used for the air temperature sensor that the ambient air temperature to described refrigerant loop detects.
According to said structure be used for the air temperature sensor that the ambient air temperature to refrigerant loop detects owing to comprise in a plurality of sensors, so abnormality juding portion can to judge that this air temperature sensor has no abnormal.And, use the detected value of this air temperature sensor, can judge that comprising refrigerant condition detects and have no abnormal with sensor at other interior sensor.
The 5th mode of the present invention is characterised in that, in the arbitrary mode in the first～the cubic formula, possesses the engine that drives described compressor, comprises in described a plurality of sensors to be used for the exhaust gas temperature sensor that the EGT to described engine detects.
According to said structure be used for the temperature sensor that the EGT to the engine of drive compression machine detects owing to comprise in a plurality of sensors, so abnormality juding portion can to judge that this exhaust gas temperature sensor has no abnormal.And, use the detected value of this exhaust gas temperature sensor, can judge that comprising refrigerant condition detects and have no abnormal with sensor at other interior sensor.
The 6th mode of the present invention is characterised in that, in arbitrary mode in first～the 5th mode, possesses the chilled(cooling) water return (CWR) that makes the cooling water circulation, this cooling water cools off the engine that drives described compressor, comprises in described a plurality of sensors to be used for the cooling-water temperature sensor that the temperature to described cooling water detects.
According to said structure, be used for the cooling-water temperature sensor that the cooling water temperature to cooled engine detects owing to comprise in a plurality of sensors, this engine drives compressor, thus abnormality juding portion can to judge that this cooling-water temperature sensor has no abnormal.And, use the detected value of this cooling-water temperature sensor, can judge that comprising refrigerant condition detects and have no abnormal with sensor at other interior sensor.
The 7th mode of the present invention is characterised in that, in arbitrary mode in first～the 6th mode, possessing comparison other could detection unit, this comparison other could detection unit based in sensor characteristics, detected object and the detection position at least one, judge that whether each sensor is to judge the subject sensor that the mutual comparison when no abnormal is arranged in described abnormality juding portion.
According to said structure, comparison other could detection unit based in sensor characteristics, detected object and the detection position at least one, judge that whether each sensor is to judge the subject sensor that the mutual comparison when no abnormal is arranged in abnormality juding portion.Therefore, according to sensor characteristics, detected object and detection position, can with as the subject sensor of mutual comparison not preferred sensor from the subject sensor of mutual comparison, get rid of, can prevent misinterpretation.
For example, in a plurality of sensors that in aircondition, possessed, because the difference of detected object, exist accuracy of detection in the set point of temperature zone to have the temperature sensor of the sensor characteristics lower than other sensor.Therefore, sensor characteristics based on each sensor, preestablish and other sensor between can compare the scope of promptly can the output reliability high detected value of the scope of the detected value of detected value mutually as having or not the judgement possible range unusually, when the detected value of this temperature sensor is represented to have or not the value of judging outside the possible range unusually, from comparison other, get rid of, thus, can prevent to have or not unusually each sensor in the detection unit that N/R misinterpretation is arranged.
In addition, in above-mentioned a plurality of sensors, exist to as the temperature of the like that different detected object of cold-producing medium and cooling water detect temperature sensor the time, after operation of air conditioner stopped, each detected object returned the required time existence difference of stable state.Therefore, according to judgement arranged N/R opportunity, there is different situations in the detected value of each sensor owing to the difference of detected object.Therefore, judge to have when no abnormal by abnormality juding portion, return under the situation of stable state and other detected object when not returning stable state at cold-producing medium, sensor by the state of getting rid of from the subject sensor of mutual comparison other detected object of not returning stable state detects can prevent N/R misinterpretation.
Moreover according to season, at indoor pusher side and outdoor pusher side, the temperature around existing etc. are different situations greatly.At this moment, judge that by abnormality juding portion each sensor has under the N/R situation, judging that sensor that the detection position is positioned at indoor pusher side has when no abnormal, get rid of from the subject sensor of mutual comparison by the sensor that the detection position is arranged in outdoor pusher side, can prevent N/R misinterpretation.Similarly,, get rid of from the subject sensor of mutual comparison, can prevent N/R misinterpretation by the sensor that the detection position is arranged in indoor pusher side judging that sensor that the detection position is positioned at outdoor pusher side has when no abnormal.
All directions of the present invention formula is characterised in that, in the 5th mode, described comparison other could detection unit when judging whether each sensor is the subject sensor of described mutual comparison, under the situation that has or not the value outside the judgement possible range unusually that the detected value that becomes the sensor of judging object is represented to stipulate, not with the subject sensor of this sensor as described mutual comparison, this has or not unusually judges that possible range sets based on the sensor characteristics of this sensor.
According to said structure, even exist accuracy of detection in the temperature province of regulation to have under the situation of temperature sensor of low sensor characteristics, sensor characteristics based on this sensor, preestablish and other sensor between can compare the scope of promptly can the output reliability high detected value of the scope of the detected value of detected value mutually as having or not the judgement possible range unusually, when the detected value of this temperature sensor is represented to have or not the value of judging outside the possible range unusually, from comparison other, get rid of, thus, can prevent to have or not unusually each sensor in the detection unit that N/R misinterpretation is arranged.As such sensor, can enumerate and for example be used for the exhaust gas temperature sensor that the waste gas to the engine of drive compression machine detects.Exhaust gas temperature sensor with the waste gas of the engine of drive compression machine as detected object.EGT is because more contour than the temperature of the ambient air of the temperature of cold-producing medium or refrigerant loop, so exhaust gas temperature sensor uses the high temperature sensor of accuracy of detection in the high-temperature area.When using the high temperature sensor of accuracy of detection in the high-temperature area, the situation of the accuracy of detection step-down in the low-temperature region (for example 20 degree are with inferior) is arranged.Therefore, based on sensor characteristics, if what the scope of can output reliability high detected value was set at Abgassensor has or not the judgement possible range unusually, then being in this at the detected value of this exhaust gas temperature sensor has or not when judging possible range unusually, in abnormality juding portion, can correctly judge have no abnormal.On the other hand, when expression has or not the value of judging outside the possible range unusually, this exhaust gas temperature sensor is got rid of from the subject sensor of mutual comparison, have no abnormal by the judgement of abnormality juding portion, thus, judging that other sensor has when no abnormal, can prevent misinterpretation.
The 9th mode of the present invention is characterised in that, in the 6th mode, described comparison other could detection unit when judging whether each sensor is the subject sensor of described mutual comparison, the sensor that will detect the state of the detected object that do not return stable state is not as the subject sensor of described mutual comparison.
According to said structure, for example, exist under the situation of the temperature sensor that the temperature to detected objects different as cold-producing medium and cooling water detects, after stopping operation of air conditioner, in cold-producing medium and cooling water, returning aspect the stable state required time, cooling water is longer.Therefore, according to judgement arranged N/R opportunity, the detected value of the cooling-water temperature sensor that the temperature of cooling water is detected represents to compare the high value of detected value of the refrigerant temperature sensors that the temperature of cold-producing medium detects.Therefore, abnormality juding portion judges that each sensor has when no abnormal, the sensor that will detect the state of the detected object that do not return stable state is as relatively subject sensor mutually, thus, can prevent to judge that other sensor has the misinterpretation when no abnormal.
The tenth mode of the present invention is characterised in that, in arbitrary mode in first～the 9th mode, possess: the counter-measure information storage part, it is for each sensor, to be judged to be the situation that counter-measure when unusual is divided into the expression detected value lower than the situation of the detected value that relatively the detected value of subject sensor group is high mutually and expression by described abnormality juding portion, and relevant counter-measure information will be stored; Notice portion, it is utilizing described abnormality juding portion to be judged to be when unusual as the sensor that N/R judgement object is arranged, based on the detected value of this sensor, the counter-measure that notice is corresponding.
According to said structure, to be judged to be when unusual as the sensor that N/R judgement object is arranged, higher or low according to this detected value that is judged as unusual sensor than the detected value of the subject sensor group that compares mutually, can utilize the corresponding counter-measure of notice portion notice.
In addition, in order to solve above-mentioned problem, the 11 mode of the present invention provides a kind of energy device, possess the fluid circulating path of the fluid circulation that makes the energy that is added regulation and comprise and be used for the fluid state that the state to described fluid detects and detect with sensor at interior a plurality of sensors, in the process that makes described fluid circulation, the work that makes described release of fluid energy and stipulate, described energy device is characterised in that, possesses abnormality juding portion, this abnormality juding portion is after stopping described fluid interpolation energy, when described fluid returns stable state, compare the detected value of each sensor mutually, it is no abnormal to judge that each sensor has.
According to said structure, abnormality juding portion when cold-producing medium returns stable state, compares the detected value of each sensor mutually after stopping convection cell interpolation energy, and it is no abnormal to judge that each sensor has.Add energy if stop convection cell, then state such as the temperature of fluid and on every side states such as temperature about equally, the detected value of each sensor becomes and on every side the corresponding value of state.Therefore, the sensor of the detected value of ambient state that can the output expression is different with other sensor is judged to be unusually, also the sensor of sensor characteristics deviation can be judged to be unusually.Thus, as disconnection fault or short trouble, before sensor reaches complete failure, can detect the unusual of sensor in advance, the fault of precognition sensor.
According to the present invention, by the detected value that is arranged on a plurality of sensors on aircondition or the energy device is compared mutually, can detect each sensor in advance has no abnormal.
Description of drawings
Fig. 1 is the figure that an example of the refrigerant loop of aircondition of the present invention and chilled(cooling) water return (CWR) is shown.
Fig. 2 is the block diagram that the functional structure of control device is shown.
Fig. 3 illustrates the figure of the detected value of each sensor with respect to the variation of time.
Fig. 4 is the figure that counter-measure information is shown.
Fig. 5 is the process chart that comparison other could determination processing.
Fig. 6 is the process chart that abnormality juding is handled.
Label declaration:
10 refrigerant loops
11 off-premises stations
12 indoor sets
15 compressors
18 cross valves
19 outdoor heat converters
26 indoor heat converters
40 gas engines (engine)
50 chilled(cooling) water return (CWR)s
60 control device
65 abnormality juding portions
66 counter-measure information storage parts
67 counter-measure detection units
68 notice portions
SP refrigerant pressure sensor (refrigerant condition detects and uses sensor)
ST 11Compressor exit temperature sensor (refrigerant condition detects and uses sensor)
ST 12Compressor inlet temperature sensor (refrigerant condition detects and uses sensor)
ST 13Outdoor heat converter fluid temperature sensor (refrigerant condition detects and uses sensor)
ST 14Extraneous gas temperature sensor (air temperature sensor)
ST 21Indoor heat converter fluid temperature sensor (refrigerant condition detects and uses sensor)
ST 22Indoor heat converter gas temperature sensor (refrigerant condition detects and uses sensor)
ST 31Inlet temperature sensor (air temperature sensor)
ST 31Blow out temperature sensor (air temperature sensor)
ST 41Cooling-water temperature sensor
ST 42Exhaust gas temperature sensor
The ST temperature sensor
The specific embodiment
Below, with reference to description of drawings preferred implementation of the present invention.
Fig. 1 is the figure of structure of the aircondition 100 of gas-fired heat pump (GHP) formula that embodiments of the present invention are shown.The structure of the refrigerant loop 10 of aircondition 100 at first, is described.In addition, in Fig. 1, represent refrigerant loop 10 with thick line.
Aircondition 100 shown in Figure 1 has and is arranged on outdoor off-premises station 11 and is arranged on indoor indoor set 12, and the outdoor refrigerant pipe arrangement 13 of off-premises station 11 is connected with the indoor refrigerant piping 14 of indoor set 12.
As shown in Figure 1, dispose compressor 15 at outdoor refrigerant pipe arrangement 13.Compressor 15 is connected with gas engine 40 (engine) via V-belt 40A, is driven by this gas engine 40.Suction side at the compressor 15 of outdoor refrigerant pipe arrangement 13 disposes reservoir 16, disposes cross valve 18, outdoor heat converter 19, outdoor expansion valve 20 in the ejection side successively via separator 17.And, with the outdoor fan 21 of oriented these outdoor heat converter 19 air blast of outdoor heat converter 19 disposed adjacent.And, with outdoor heat converter 19 disposed adjacent radiator 54 described later is arranged.
In addition, between cold-producing medium high-pressure side of outdoor refrigerant pipe arrangement 13 (the ejection side of compressor 15) and cold-producing medium low-pressure side (front of reservoir 16 in the illustrated example), be connected with oil return pipe 22 and by-passing valve 23, be connected with liquid valve 24 at the entrance side of reservoir 16 and the outlet side of outdoor expansion valve 20.And, the compressor delivery pressure sensor SP that is provided with pressure switch SW in the cold-producing medium high-pressure side of outdoor refrigerant pipe arrangement 13, the refrigerant pressure of the outlet side of compressor 15 is detected 1, compressor exit temperature sensor ST that the refrigerant temperature of the outlet side of compressor 15 is detected 11, be provided with the compressor inlet pressure sensor SP that the pressure to the entrance side of compressor 15 detects in the cold-producing medium low-pressure side of outdoor refrigerant pipe arrangement 13 2, and compressor inlet temperature sensor ST that the refrigerant temperature of the entrance side of compressor 15 is detected 12And the outdoor refrigerant pipe arrangement 13 that is connected with outdoor expansion valve 20 at the end to outdoor heat converter 19 is provided with the outdoor heat converter fluid temperature sensor ST of the temperature of the cold-producing medium that is used for the tracer liquid state 13And, be provided with the extraneous gas temperature sensor ST that is used to detect the extraneous gas temperature at off-premises station 11 14Below, exist compressor delivery pressure sensor SP 1With compressor inlet pressure sensor SP 2General name is expressed as the situation (with reference to Fig. 2) of refrigerant pressure sensor SP.And, exist and fall compressor outlet temperature sensor ST 11, compressor inlet temperature sensor ST 12, and outdoor heat converter fluid temperature sensor ST 13General name is expressed as outdoor pusher side refrigerant temperature sensors ST 10Situation.And, exist outdoor pusher side refrigerant temperature sensors ST 10, extraneous gas temperature sensor ST 14, cooling-water temperature sensor ST described later 41And exhaust gas temperature sensor ST 42General name is expressed as outdoor pusher side temperature sensor ST 1Situation.
On the other hand, as shown in Figure 1, dispose indoor heat converter 26 at the indoor refrigerant piping 14 of indoor set 12.And, at indoor refrigerant piping 14, near indoor heat converter 26, dispose indoor expansion valve 27.With indoor heat converter 26 disposed adjacent indoor fan 28 is arranged, indoor fan 28 is respectively to indoor heat converter 26 air blast.And, between a distolateral and indoor expansion valve 27 of the indoor heat converter 26 of indoor refrigerant piping 14, be provided with and be used for the indoor heat converter fluid temperature sensor ST that the temperature to the cold-producing medium of liquid condition detects 21, be provided with at the other end of indoor heat converter 26 and be used for the indoor heat converter gas temperature sensor ST that the temperature to the cold-producing medium of gaseous state detects 22And, be provided with the suction inlet that not shown being used to sucks room air at indoor set 12, near this suction inlet, be provided with and be used for the inlet temperature sensor ST that the temperature to the air that is drawn into indoor set 12 detects 31And, be provided with the not shown blow-off outlet that is used for the air that blow out air regulates at indoor set 12, blow out temperature sensor ST what be provided with near this blow-off outlet that the temperature that is used for the air after being blown out to indoor air conditioning detects 32Below, as shown in Figure 2, exist indoor heat converter fluid temperature sensor ST 21With indoor heat converter gas temperature sensor ST 22General name is expressed as indoor pusher side refrigerant temperature sensors ST 20Situation, exist inlet temperature sensor ST 31With blow out temperature sensor ST 32General name is expressed as indoor pusher side air temperature sensor ST 30Situation.And, exist indoor pusher side refrigerant temperature sensors ST 20With indoor pusher side air temperature sensor ST 30General name is expressed as indoor pusher side temperature sensor ST 2Situation.And, exist outdoor pusher side temperature sensor ST 1With indoor pusher side temperature sensor ST 2General name also simply is expressed as the situation of temperature sensor ST.
In aircondition 100, switch cooling operation and add heat run by switching cross valve 18.When cross valve 18 switched to the refrigeration side, cold-producing medium flowed along solid arrow shown in Figure 1, and outdoor heat converter 19 becomes condenser, and indoor heat converter 26 becomes evaporimeter, and indoor heat converter 26 becomes the cooling operation state that freezes to indoor.
In addition, when cross valve 18 switched to heated side, cold-producing medium flowed along dotted arrow shown in Figure 1, and indoor heat converter 26 becomes condenser, and outdoor heat converter 19 becomes evaporimeter, and indoor heat converter 26 becomes the heating operating condition that heats indoor.When cooling operation and when adding heat run, based on above-mentioned refrigerant pressure sensor SP, the various state and the temperature of the ambient air of refrigerant loop 10 etc. by the detected cold-producing medium of temperature sensor ST, by control device 60 described later (with reference to Fig. 2), driving to compressor 15, gas engine 40 etc. is controlled, and carries out and the corresponding operation of air conditioner of air-conditioning load.And, the unusual temperature of cold-producing medium of representing the detected value of described refrigerant pressure sensor SP or temperature sensor ST rises or during pressure rising etc., control device 60 stop for the sake of security compressor 15 or gas engine 40 driving so that operation of air conditioner stop.
Next, the structure related with gas engine 40 is described.
The aircondition 100 of present embodiment possesses and is used for chilled(cooling) water return (CWR) 50 that gas engine 40 is cooled off.Chilled(cooling) water return (CWR) 50 is provided with exhaust-heat exchanger 52, heat-exchangers of the plate type 53, radiator 54 for the used heat that reclaims gas engine 40 at cooling water pipe 51.In addition, in Fig. 1, represent chilled(cooling) water return (CWR) 50 with fine rule.And, represent the exhaust path of gas engine 40 with two-wire.
At this, exhaust-heat exchanger 52 is the heat exchangers that carry out heat exchange between the waste gas of gas engine 40 and cooling water, and this exhaust-heat exchanger 52 is connected with exhaust-gas silencer 52A, waste gas filter 52B, waste gas end 52C.And heat-exchangers of the plate type 53 is the cooling water/refrigerant heat exchanger of carrying out heat exchange between cold-producing medium in refrigerant loop 10 and the cooling water in the chilled(cooling) water return (CWR) 50.This heat-exchangers of the plate type 53 is configured between the cross valve 18 and compressor 15 of outdoor refrigerant pipe arrangement 13, when adding heat run, works as secondary evaporimeter by making heat-exchangers of the plate type 53, can keep and strengthen heating efficiency.54 pairs of cooling waters that reclaim the heat extraction of gas engine 40 of radiator cool off.
In addition, above-mentioned chilled(cooling) water return (CWR) 50 has: the first cooling water path 50A that makes the cooling water circulation between exhaust-heat exchanger 52 and gas engine 40; Between heat-exchangers of the plate type 53 and gas engine 40, make the second cooling water path 50B of cooling water circulation; Between radiator 54 and gas engine 40, make the 3rd cooling water path 50C of cooling water circulation.
The described first cooling water path 50A, the second cooling water path 50B and the 3rd cooling water path 50C are by first triple valve 55, second triple valve, 56 branches that are arranged on the cooling water pipe 51.
The inlet 55A of first triple valve 55 is connected with the coolant outlet 40B of gas engine 40 via cooling water pipe 51, is connected with DYN dynamic circulating pump 57 and the exhaust-heat exchanger 52 that is used to make the cooling water circulation in turn at a side's of first triple valve 55 outlet 55B.Shown in arrow A among the figure, the first cooling water path 50A forms by the pipe arrangement path that first triple valve 55, circulating pump 57, exhaust-heat exchanger 52 are connected.
Second triple valve 56 is triple valves of Flow-rate adjustment formula, is that the cooling water of the high temperature that will be via first triple valve 55 flows into is to either party's guiding of heat-exchangers of the plate type 53 and radiator 54 or change split ratio and to the valve of both sides' guiding.Be connected with the opposing party's of first triple valve 55 outlet 55C via cooling water pipe 51 at the inlet 56A of second triple valve 56.And, be connected with heat-exchangers of the plate type 53 at a side's of second triple valve 56 outlet 56B via cooling water pipe 51.And then, be connected with radiator 54 at the opposing party's of second triple valve 56 outlet 56C via cooling water pipe 51.Shown in arrow B among the figure, the second cooling water path 50B is by forming, and be connected with the first cooling water path 50A a side's of first triple valve 55, second triple valve 56 outlet 56B, the pipe arrangement path that heat-exchangers of the plate type 53 connects.Shown in arrow C among the figure, the 3rd cooling water path 50C is by forming, and be connected with the first cooling water path 50A the opposing party's of first triple valve 55, second triple valve 56 outlet 56C, the pipe arrangement path that radiator 54 connects.
In chilled(cooling) water return (CWR) 50, on the cooling water pipe 51 that the inlet 55A to the coolant outlet 40B of gas engine 40 and first triple valve 55 is connected, be provided with the cooling-water temperature sensor ST that the temperature to the cooling water of gas engine 40 outlet sides detects 41 Control device 60 is according to utilizing this cooling-water temperature sensor ST 41The states of the operation of air conditioner of the temperature of detected cooling water or aircondition 100 etc. are controlled the switching of first triple valve 55 and second triple valve 56, and control circulates cooling water in the cooling water path of regulation.
In addition, be used for the exhaust gas temperature sensor ST that the temperature to the waste gas of gas engine 40 detects being arranged to be provided with on the exhaust gas muffler 52A of exhaust-heat exchanger 52 42Based on by this exhaust gas temperature sensor ST 42Detected EGT or by cooling-water temperature sensor ST 41The state of detected cooling water temperature or other operation of air conditioner etc., control device 60 monitors the state of gas engines 40, when detecting gas engine 40 unusual, control shuts down gas engine 40 for the sake of security.Below, exist cooling-water temperature sensor ST 41And exhaust gas temperature sensor ST 42It is temperature sensor ST that general name is expressed as engine 40Situation.
Next, with reference to Fig. 2, the control device 60 that each inscape of aircondition 100 is controlled is described.Control device 60 is controlled above-mentioned each inscape by the computer system that possesses not shown CPU, RAM, EEPROM etc.As mentioned above, the refrigerant pressure sensor SP, the outdoor pusher side refrigerant temperature sensors ST that are possessed by aircondition 100 of control device 60 10, indoor pusher side refrigerant temperature sensors ST 20, detect in refrigerant loop 10 state of the cold-producing medium of circulation, by extraneous gas temperature sensor ST 14, indoor pusher side air temperature sensor ST 30, detect the temperature of the ambient air of refrigerant loop 10, be temperature sensor ST by engine 40, detect the state of gas engine 40, to control above-mentioned each inscape carrying out and the corresponding operation of air conditioner of air-conditioning load, and in the state of the state of cold-producing medium or gas engine 40, detect when unusual, control stops operation of air conditioner.
The situation of faults such as generation broken string or short circuit certainly needless to say in described refrigerant pressure sensor SP or all temps sensor ST, even when detected value produces deviation owing to the deviation of sensor characteristics, also can't bring into play aircondition 100 desired heat pump performances, and, the situation that exists the unusual detection of the state of cold-producing medium or gas engine 40 to postpone.Therefore, the aircondition 100 of present embodiment is after stopping operation of air conditioner, through the stipulated time, when the state of cold-producing medium returns stable state, the detected value that compares each sensor SP, ST mutually, it is no abnormal to judge that each sensor SP, ST have, to detect unusual at interior each sensor SP, ST of the deviation that comprises sensor characteristics in advance.
Fig. 2 represents to handle with above-mentioned abnormality juding the functional structure of the control device 60 that is associated.As shown in Figure 2, control device 60 possesses: force value input part 61, temperature value input part 62, saturation temperature value conversion portion 63, comparison other could detection units 64, abnormality juding portion 65, counter-measure information storage part 66, counter-measure detection unit 67, notice portion 68.But, store in EEPROM (non-volatile memory) and comprise sensor abnormality decision procedure etc. in interior various control programs or other various information, the functional structure of control device 60 shown in Figure 2 is realized by the co-operatings such as various programs that the department of computer science as hardware system unifies as software resource.
Will be as the detected value of detected force value in described refrigerant pressure sensor SP from compressor inlet pressure sensor SP 2And compressor delivery pressure sensor SP 1Input pressure value input part 61.Will as by the detected value of the detected temperature value of described temperature sensor ST from compressor inlet temperature sensor ST 12, compressor exit temperature sensor ST 11, outdoor heat converter fluid temperature sensor ST 13, cooling-water temperature sensor ST 41, exhaust gas temperature sensor ST 42, extraneous gas temperature sensor ST 14, indoor heat converter fluid temperature sensor ST 21, indoor heat converter gas temperature sensor ST 22, inlet temperature sensor ST 31, blow out temperature sensor ST 32Input temp value input part 62.
Saturation temperature value conversion portion 63 has the function of saturation temperature value of cold-producing medium of obtaining the detection position of each refrigerant pressure sensor SP based on the detected value of the refrigerant pressure sensor SP that is input to force value input part 61.The saturation temperature value of being obtained by saturation temperature value conversion portion 63 as the detected value of each refrigerant pressure sensor SP and export to comparison other could detection unit 64.And, in abnormality juding portion 65, judge that each sensor SP, ST have when no abnormal, mutually the temperature value of each temperature sensor ST relatively as detected value.
Comparison other could have following function by detection unit 64: based in sensor characteristics, detected object and the detection position at least one, judge that each sensor SP, ST that aircondition 100 possessed judge the subject sensor that the mutual comparison when no abnormal is arranged in abnormality juding portion 65.Could detection unit 64 according to comparison other, can with as the subject sensor of mutual comparison not preferred sensor from the subject sensor of mutual comparison, get rid of, thereby can prevent misinterpretation.In addition, performed comparison other could determination processing be narrated in the back in this comparison other could detection unit 64.
Abnormality juding portion 65 has following function: after operation of air conditioner stops, when cold-producing medium returns stable state, compare the detected value of each sensor SP, ST mutually, judge that each sensor SP, ST have no abnormal.At this, the detected value of each sensor SP, ST compares in temperature value mutually.And, judging has when no abnormal, the mean value of could detection unit 64 obtaining the detected value of the subject sensor group of permitting by comparison other as relatively subject sensor mutually, and based on this mean value, at each sensor SP, ST for just often, whether setting comprises the detected value of each sensor SP, ST in interior normal temperature range (range of normal value), be included in this normal temperature range according to the detected value of each sensor SP, ST, judges that each sensor SP, ST have no abnormal.Mean value ± a% that normal temperature range can be set at for example above-mentioned detected value (for example, a=5) etc.Wherein, so-called mean value ± a% is, is 10 ℃ at mean value for example, during a=5, and normal temperature range is the temperature range from 9.5 ℃ to 10.5 ℃, is 20 ℃ at mean value, during a=5, and normal temperature range is the temperature range from 19 ℃ to 21 ℃.
At this,, the principle that the abnormality juding in the present embodiment is handled is described with reference to Fig. 3.During Fig. 3 (a) expression operation of air conditioner and operation of air conditioner after stopping by extraneous gas temperature sensor ST 14The variations in temperature of detected extraneous gas temperature, (b) expression is by outdoor heat converter fluid temperature sensor ST 13The variations in temperature of detected cold-producing medium, (c) expression is by cooling-water temperature sensor ST 41The variations in temperature of detected cooling water, (d) expression is by exhaust gas temperature sensor ST 42The variations in temperature of detected waste gas.Wherein, transverse axis is represented the elapsed time, and the longitudinal axis is represented temperature.And, in aircondition 100, at T from figure 0To T 1Operation of air conditioner is carried out in the interval of expression, at T 1The shown moment stops operation of air conditioner.
As shown in Figure 3, during carrying out operation of air conditioner, the air-conditioning load of the variation of the design temperature according to based on air-conditioning time the or extraneous gas variation of temperature etc., driving to compressor 15 or engine 40 is controlled, follow therewith, the cooling water in the cold-producing medium in the refrigerant loop 10, the chilled(cooling) water return (CWR) 50, the EGT of gas engine 40 change.On the other hand, if operation of air conditioner T in the drawings 1The shown moment stops, then outdoor heat converter fluid temperature sensor ST 13, cooling-water temperature sensor ST 41, exhaust gas temperature sensor ST 42Detected value shown in Fig. 3 (b), (c), (d), descend gradually.If promptly add energy because operation of air conditioner stops cold-producing medium being compressed, then the temperature of cold-producing medium or pressure become the corresponding value of state with the atmosphere on every side of refrigerant loop 10.Therefore, before the state of cold-producing medium returns stable state, if place sufficient time, then the outdoor heat converter fluid temperature sensor ST shown in Fig. 3 (b), (c), (d) 13, cooling-water temperature sensor ST 41, exhaust gas temperature sensor ST 42Detected value represent with Fig. 3 (a) shown in extraneous gas temperature sensor ST 14Detected value value about equally, expression can be departed from other the detected value of sensor SP, ST and the sensor of the value more than the setting be judged to be exist unusual.Abnormality juding portion 65 utilizes this principle, judges that the deviation that comprises sensor characteristics has no abnormal at interior sensor SP, ST.
Yet, according to the difference of the sensor characteristics of each sensor SP, ST, the difference of detected object, the difference of detection position, have when no abnormal in judgement, if existence can be included in the subject sensor of mutual comparison situation and mutually relatively subject sensor then produce the situation of misinterpretation.
For example, exhaust gas temperature sensor ST 42With the waste gas of gas engine 40 as detected object.Because the temperature of waste gas is than the temperature height of the ambient air of the temperature of cold-producing medium or refrigerant loop 10, so exhaust gas temperature sensor ST 42Use the high temperature sensor of accuracy of detection in the high-temperature area to constitute.When using the high temperature sensor of the accuracy of detection of high-temperature area, there is the situation of the accuracy of detection step-down of low-temperature region.For example, the exhaust gas temperature sensor ST of present embodiment 42The accuracy of detection of the low-temperature region more than 20 degree is than other the sensor ST shown in Fig. 3 (a) and (b), (c) 41, ST 13, ST 14Low.Therefore, in the present embodiment, for example, the extraneous gas temperature is 20 degree when following, other sensor ST 41, ST 13, ST 14Detected value be expressed as 20 the degree below, relative therewith, exhaust gas temperature sensor ST 42The detected value and the temperature of the reality of extraneous gas temperature irrelevant, always be set at expression 20 degree.Therefore, the extraneous gas temperature is that 20 degree are when following, if comprise exhaust gas temperature sensor ST in the subject sensor of comparison mutually 42, can't judge correctly that then each sensor SP, ST have no abnormal.Therefore, in the present embodiment, about each sensor SP, ST, based on each sensor characteristics, have when no abnormal in judgement, preestablish and other sensor SP, ST between can compare the detected value of detected value mutually the scope scope that promptly can export high reliability as can judging that the N/R judgement possible range that has or not is unusually arranged, according to the detected value of each sensor SP, ST whether having or not unusually judge in the possible range judge whether comprise each sensor SP, ST in the comparison other.
In addition, shown in Fig. 3 (b), (c), at outdoor heat converter fluid temperature sensor ST 13Detected object be cold-producing medium and cooling-water temperature sensor ST 41Detected object be in the cooling water, return required asynchronism(-nization) till the stable state, compare with cold-producing medium, cooling water returns till the stable state more spended time.Therefore, after operation of air conditioner stops, before the state of cooling water returns stable state, cooling-water temperature sensor ST 41Detected value represent than outdoor heat converter fluid temperature sensor ST 13The high value of detected value.Therefore, judge that according to utilizing abnormality juding portion 65 each sensor SP, ST have N/R opportunity, the sensor that detects by the state of from the subject sensor of mutual comparison, getting rid of the detected object that do not return stable state, thus the sensor that can correctly judge other has no abnormal.
Moreover according to season, in off-premises station 11 sides, indoor set 12 sides, temperature on every side etc. exist greatly different.At this moment, utilizing abnormality juding portion 65 to judge that each sensor SP, ST have under the N/R situation, judging that the detection position is in the sensor ST of off-premises station 11 sides 2Have when no abnormal, by from comparison other, getting rid of the sensor ST that the detection position is in indoor set 12 sides 1, can prevent N/R misinterpretation.Similarly, judging that the detection position is in sensor SP, the ST of off-premises station side 1Have when no abnormal, by from comparison other, getting rid of the sensor ST that the detection position is in the indoor set side 2, can prevent N/R misinterpretation.
The counter-measure that 66 pairs of counter-measure information storage parts utilize abnormality juding portion 65 to be judged to be when unusual defines and stores.
Fig. 4 represents counter-measure information.As shown in Figure 4, counter-measure is divided into detected value and represents the situation of the value higher than normal temperature range and represent that the situation of low value defines with respect to each sensor SP, ST, and the difference corresponding stored.
For example, outdoor heat converter fluid temperature sensor ST 13Detected value when representing than the high value of above-mentioned normal temperature range owing to detect the high temperature of temperature than the cold-producing medium of reality, though therefore influential to heat pump performance, there is no need directly to stop operation of air conditioner.Therefore, about outdoor heat converter fluid temperature sensor ST 13, the counter-measure as expression during, the situation that might have a fault and the fault that the user is represented than the high detected value of normal temperature range predict notify corresponding.
On the other hand, exhaust gas temperature sensor ST 42Detected value when being expressed as than the low value of normal temperature range since output than the low temperature of actual EGT as detected value, therefore when the EGT abnormal ascending, have and detect the worry that postpones.Therefore, exhaust gas temperature sensor ST 42Detected value when being expressed as than the low value of normal temperature range, carry out exhaust gas temperature sensor ST 42Abnormity notifying, and, forbid corresponding to the running of operation of air conditioner as counter-measure.And each counter-measure also can be that the maintenance side of user side, aircondition 100 is that maintenance personal or management company's side untill further notice object more segment and define according to the object of notice.
Notice portion 68 constitutes, and uses to be arranged at control substrate etc. and to switch according to content of announcement and turns on light/turn off the light/LED that glimmers or wait the display panels of representing testing result or be arranged on according to literal or mark and be used for aircondition 100 is carried out display part etc. on the remote control of straighforward operation.And, for example, also can carry out external equipments such as the remote supervisory (control) equipment of supervisory control or centralized management equipment to aircondition 100 with respect to being used for, output counter-measure information, and via the display panels untill further notice mechanism that external equipment possessed content of announcement is notified.
In notice portion 68, about utilizing abnormality juding portion 65 to be judged to be unusual sensor, based on the counter-measure information that is stored in the above-mentioned counter-measure information storage part 66, and more high or low based on detected value than normal temperature range, notify corresponding counter-measure.
Next, with reference to Fig. 5, illustrate that comparison other could determination processing.
Comparison other could detection unit 64 in comparison other could determination processing, at first, judge whether current be the action opportunity (step S1) that the abnormality juding in the abnormality juding portion 65 is handled.Be judged to be abnormality juding handle action opportunity the time (step S1: be), the sensor number of the judgement subject sensor (i) that comparison other could be judged is changed to " 1 " (i=1) (step S2) earlier.At this, in above-mentioned each sensor SP, ST, from " 1 " beginning according to the rules additional in advance intrinsic sensor number of order successively, in control device 60, utilize this sensor number to discern each sensor SP, ST respectively.
Next, the judgement subject sensor (i) that could judge about the comparison other of sensor number (i), based on this sensor characteristics of judging subject sensor, whether the current detected value of judging this judgements subject sensor (i) is included in as the scope of the detected value that can export high reliability and predefined having or not unusually judged possible range interior (step S3).Wherein, in the present embodiment, unusually have or not judge possible range for higher limit that may temperature range from the detection of each sensor SP, ST below the temperature (for example 5 degree) of regulation, from above-mentioned detection may temperature range lower limit to the scope more than the temperature (for example 5 degree) of regulation.
In step S2, the current detected value of the judgement subject sensor (i) that comparison other could be judged is in predefined having or not unusually when judging in the possible range (step S3: be), next, judge from the detected value of judging subject sensor (i) output whether stablize (step S4).At this, so-called detected value is stable to be meant that the change of the detected value in the stipulated time closes in the scope of predefined regulation, the detected object that is meant the judgement subject sensor (i) that comparison other could be judged returns stable object, and output and refrigerant loop 10 around the corresponding detected value of state.Wherein, this step S2 also can constitute simply, with respect to each sensor SP, ST, after air-conditioning stops, based on experiment wait be set to detected value stable till the required time, through this predefined time, judge whether the detected value of each sensor SP, ST is stablized according to whether.
In step S4, if will judge that the detected value of subject sensor (i) is judged to be stable (step S4: be), then comparison other could detection unit 64 be allowed this sensor (i) is included in the subject sensor of mutual comparison (step S5).On the other hand, the detected value that to judge subject sensor in step S3 is judged to be and is not included in and has or not unusually when judging in the possible range (step S3: (step S4: not) when detected value being judged to be instability not) and in step S4, S6 advances to step, and comparison other could detection unit 64 be forbidden this judgement subject sensor (i) is included in the subject sensor of mutual comparison (step S6).
Then, in step S7, make the sensor number of judging subject sensor (i) increase by 1 (i=i+1), whether judge about all sensors SP, ST compare object could judgement (step S8), all sensors SP, ST compare object could judgement before (step S8: be), carry out above-mentioned processing repeatedly.
Wherein, in comparison other shown in Figure 5 could the flow chart of determination processing, detection position based on each sensor SP, ST, though do not judge whether be included in the subject sensor of mutual comparison, but in the present embodiment, be set at refrigerant pressure sensor SP and outdoor pusher side temperature sensor ST about being arranged on off-premises station 11 sides 1, and be arranged on the indoor pusher side temperature sensor ST of indoor pusher side 2, judgement has no abnormal respectively in advance.That is, judge that the detection position is in the indoor pusher side temperature sensor ST of indoor set 12 sides 2Have when no abnormal, by refrigerant pressure sensor SP and the outdoor pusher side temperature sensor ST that the detection position is in off-premises station 11 sides 1From the subject sensor of mutual comparison, get rid of, can prevent N/R misinterpretation.Similarly, judge that the detection position is in the refrigerant pressure sensor SP and the outdoor pusher side temperature sensor ST of off-premises station 11 sides 1Have when no abnormal, by the detection position being in the indoor pusher side temperature sensor ST of indoor set 12 sides 2From the subject sensor of mutual comparison, get rid of, can prevent N/R misinterpretation.This is because owing to the difference in season, and in off-premises station 11 sides, indoor set 12 sides, there is greatly different situation in temperature on every side etc.
Next, with reference to Fig. 6, the specification exception determination processing.
Abnormality juding portion 65 at first, judges whether operation of air conditioner stops (step S11) when carrying out the abnormality juding processing.Be judged to be operation of air conditioner when stopping (step S11: be), judge and whether pass through the predefined stipulated time (step S12).At this, this stipulated time is after stopping operation of air conditioner, returns the required time till the stable state and the predefined time is to determine that enforcement has or not the time on the opportunity of determination processing unusually based on cold-producing medium.
In step S12, when being judged to be (step S12: be) through the stipulated time, next, abnormality juding portion 65 based on could detection unit by comparison other the mean value of detected value of sensor groups of the subject sensor that compares mutually of the conduct of 64 permissions, in the present embodiment, set the temperature range of mean value ± 5 ℃ as normal temperature range.In step S12, (step S12: not), returning step S11, was not holding state before the process stipulated time when passing through the stipulated time.
Next, will have or not the sensor number of the judgement subject sensor (j) of judgement to be changed to " 1 " (j=1) (step S14) earlier unusually.Then, could judge that this has N/R judgement subject sensor (j) subject sensor whether licensed conduct is compared mutually (step S 15) by detection unit 64 by comparison other.In step S15, judge when the subject sensor that the licensed conduct of N/R judgement subject sensor (j) compares is mutually arranged (step S15: be), move to the processing of step S16.In step S16, judge whether the detected value of this judgement subject sensor (j) is included in the normal temperature range interior (step S16) that step S13 sets.When the detected value of judgement subject sensor (j) is included in the normal temperature range, judge this sensor (j) no abnormal (step S17).When the detected value of judgement subject sensor (j) is not included in the normal temperature range, judge that this sensor (j) has (step S18) unusually.
Next, in step S 19, abnormality juding portion 65 makes the sensor number of judging subject sensor (j) increase by 1 (j=j+1), judge and whether carried out judging (step S20) about whole sensor SP, ST, before judging (step S20: be), carry out above-mentioned processing repeatedly about whole sensor SP, ST.Wherein, in step S15, judge (step S15: not), judge subject sensor (j), N/R judgement is no longer arranged when subject sensor (j) could detection unit 64 be judged to be in the subject sensor of forbidding being included in mutual comparison by comparison other about this.
Wherein, in step S18, about being judged as unusual sensor, by counter-measure detection unit 67, represent than the high value of normal temperature range or represent low value based on detected value, read corresponding counter-measure information, export to notice portion 68 from counter-measure information storage part 66.In notice portion 68,, abnormity notifying or fault precognition are notified to user or maintenance personal etc. based on the detected value that is judged as unusual sensor.And control device 60 will forbid that operation of air conditioner is judged to be the counter-measure of unusual sensor when corresponding with utilizing counter-measure detection unit 67, each inscape of control aircondition 100 so that operation of air conditioner stop.
More than, in the present embodiment of explanation, after operation of air conditioner stops, when cold-producing medium returns stable state owing to the process stipulated time, compare the detected value of each sensor SP, ST mutually, judge that each sensor SP, ST have no abnormal.At this, after operation of air conditioner stopped, if stop to utilize 15 pairs of cold-producing mediums of compressor to compress promptly adding energy, then the states such as temperature on every side of state such as the temperature of cold-producing medium and refrigerant loop 10 became stable state about equally.Therefore, when cold-producing medium returned stable state, the detected value of each sensor SP, ST became and on every side the corresponding value of state.Therefore, the detected value that compares each sensor SP, ST, the sensor of the detected value of the ambient state different conditions of the refrigerant loop 10 shown in the detected value of output expression and other sensor SP, ST can be judged to be unusually, also the sensor of sensor characteristics deviation can be judged to be unusually.Thus, as disconnection fault or short trouble, before sensor SP, ST reach complete failure, can detect the unusual of each sensor SP, ST in advance, the fault of precognition sensor SP, ST.And, because in the deviation of sensor characteristics hour, also can detect the unusual of each sensor SP, ST, even therefore can stop also not bringing the repairing of carrying out sensor period or the exchange of obstacle at operation of air conditioner as night or intermittent phase to user's business etc.
In addition, in the above-described embodiment, in saturation temperature value conversion portion 63, obtain the saturation temperature value according to the detected value of refrigerant pressure sensor SP, in temperature value, compare the detected value of each sensor SP, ST mutually, judge that each sensor SP, ST have no abnormal.Therefore, shown in present embodiment, even when being arranged on the number of the refrigerant pressure sensor SP of aircondition 100 and being two, in arbitrary refrigerant pressure sensor SP, exist when unusual, compare with other the detected value of temperature sensor ST, can judge whether arbitrary refrigerant pressure sensor SP has unusually.And, even be arranged on aircondition 100 refrigerant pressure sensor SP number after a little while, by the detected value of other temperature sensor of mutual comparison ST, also can correctly judge have no abnormal.
In addition, in the above-described embodiment, owing to utilize the comparison other could detection unit 64, based in detected object and the detection position at least any, therefore judge whether each sensor SP, ST are included in the subject sensor of mutual comparison, have when no abnormal in judgement, if subject sensor relatively mutually, then can get rid of the sensor that produces misinterpretation, can judge correctly that each sensor SP, ST have no abnormal.
In addition, be judged to be and judge that subject sensor (j) has when unusual, more high or low according to the detected value that is judged as this unusual sensor (j) than the normal temperature range of setting based on the mean value of the detected value of the subject sensor of mutual comparison, utilize counter-measure detection unit 67 to judge and the unusual corresponding counter-measures of content, thereby can be notified to the maintenance personal of user or aircondition 100 or management company's side etc. by notice portion 68.
More than, one embodiment of the present invention has been described, but the present invention is not limited thereto, can implement various changes.For example, component parts shown in the above-mentioned embodiment and matched tube structure are not limited thereto, and can suitably change in the scope that does not break away from main contents of the present invention.
For example, in the above-described embodiment, obtain the saturation temperature value according to the detected value of refrigerant pressure sensor SP, in temperature value, the detected value that compares each sensor SP, ST, it is no abnormal to judge that each sensor SP, ST have, but also can have three refrigerant pressure sensor SP at aircondition 100, judges that according to getting rid of temperature sensor ST in the subject sensor of mutual comparison each refrigerant pressure sensor SP has no abnormal.In this case, the detected value of each refrigerant pressure sensor SP need not be converted into temperature value, mutual comparative pressure value, it is no abnormal just can to judge that each refrigerant pressure sensor SP has, can judge simply have no abnormal.And, also can judge that each temperature sensor ST has no abnormal according to getting rid of refrigerant pressure sensor SP in the subject sensor of mutual comparison.
In addition, in the above-described embodiment, in the control device 60 that aircondition 100 is possessed, illustrated compare object could determination processing or abnormality juding handle, but in external equipments such as remote supervisory (control) equipment that aircondition 100 is carried out supervisory control or centralized management equipment, can certainly carry out described comparison other could determination processing or abnormality juding processing.
In addition, in the above-described embodiment, for example understand the aircondition 100 of the gas heat pump type that utilizes gas engine 40 drive compression machines 15, but be not limited to the aircondition 100 of gas heat pump type, can be applicable to various airconditions certainly.In a word, detect with sensor at interior a plurality of sensors so long as possess the refrigerant condition that comprises the state that is used to detect the cold-producing medium in the refrigerant loop, and based on the detected value of each sensor, the drive compression machine carries out the aircondition of operation of air conditioner, just can be suitable for the present invention.And, in the above-described embodiment, illustrated with respect to an outdoor unit, be connected with the structure of an indoor unit, but about possessing the aircondition of many indoor units, also can be suitable equally.
In addition, the present invention by the method identical with above-mentioned embodiment, can judge that each sensor that is arranged on the described energy device has no abnormal for a plurality of sensors that are arranged on the steam boiler homenergic equipment.Promptly, as compression, heating etc., can be applicable to following energy device: possess the fluid circulating path of the fluid circulation that makes the energy that is added with regulation and comprise and be used for the fluid state that the state to this fluid detects and detect with sensor at interior a plurality of sensors, in the process that makes the fluid circulation, discharge the work that is accumulated in the energy in the fluid and stipulates.By making such energy device possess abnormality juding portion, can detect each sensor in advance has or not the deviation that comprises sensor characteristics interior unusual, this abnormality juding portion is after stopping convection cell interpolation energy, when fluid returns stable state, compare the detected value of each sensor mutually, it is no abnormal to judge that each sensor has.That is, if stop fluids such as cold-producing medium or steam are added energy, then the state of the fluid of temperature etc. and on every side state about equally, the detected value of each sensor becomes and on every side the corresponding value of state.Therefore, the sensor of the detected value of ambient state that can the output expression is different with other sensor is judged to be unusually, also the sensor of sensor characteristics deviation can be judged to be unusually.Thus, as disconnection fault or short trouble, before sensor reaches complete failure, the unusual of sensor can be detected in advance, the fault of sensor can be predicted.

Claims (11)

1. aircondition, possess the refrigerant loop that connects compressor, cross valve, outdoor heat converter and indoor heat converter successively and form and comprise and be used for the refrigerant condition that the state to the cold-producing medium in the described refrigerant loop detects and detect with sensor at interior a plurality of sensors, detected value based on each sensor, drive described compressor, carry out operation of air conditioner, described aircondition is characterised in that
Possess abnormality juding portion, this abnormality juding portion when described cold-producing medium has returned stable state, compares the detected value of each sensor mutually after described operation of air conditioner stops, and it is no abnormal to judge that each sensor has.
2. aircondition according to claim 1 is characterized in that,
The refrigerant pressure sensor that described refrigerant condition detects the refrigerant temperature sensors that detects with the temperature that comprises in the sensor described cold-producing medium and the pressure of described cold-producing medium is detected,
Described abnormality juding portion obtains the saturation temperature value of described cold-producing medium according to the detected value of described refrigerant pressure sensor, in temperature value, and the detected value of more described each sensor mutually.
3. aircondition according to claim 1 is characterized in that,
The a plurality of pressure sensors that comprise a plurality of temperature sensors that the temperature to detected object detects in described a plurality of sensor and the pressure of detected object is detected,
Described abnormality juding portion is judging that described temperature sensor has when no abnormal, the detected value of described pressure sensor is got rid of from comparison other, and mutually relatively the detected value of each temperature sensor judge have no abnormal, judging that described pressure sensor has when no abnormal, the detected value of described temperature sensor is got rid of from comparison other, and mutually relatively the detected value of each pressure sensor to judge that each pressure sensor has no abnormal.
4. according to each described aircondition in the claim 1～3, it is characterized in that,
Comprise in described a plurality of sensor and be used for the air temperature sensor that the ambient air temperature to described refrigerant loop detects.
5. according to each described aircondition in the claim 1～4, it is characterized in that,
Possess the engine that drives described compressor,
Comprise in described a plurality of sensor and be used for the exhaust gas temperature sensor that the EGT to described engine detects.
6. according to each described aircondition in the claim 1～5, it is characterized in that,
Possess the chilled(cooling) water return (CWR) that makes the cooling water circulation, this cooling water cools off the engine that drives described compressor,
Comprise in described a plurality of sensor and be used for the cooling-water temperature sensor that the temperature to described cooling water detects.
7. according to each described aircondition in the claim 1～6, it is characterized in that,
Possessing comparison other could detection unit, this comparison other could detection unit based in sensor characteristics, detected object and the detection position at least one, judge that whether each sensor is to judge the subject sensor that the mutual comparison when no abnormal is arranged in described abnormality juding portion.
8. aircondition according to claim 5 is characterized in that,
Described comparison other could detection unit when judging whether each sensor is the subject sensor of described mutual comparison, under the situation that has or not the value outside the judgement possible range unusually that the detected value that becomes the sensor of judging object is represented to stipulate, not with the subject sensor of this sensor as described mutual comparison, this has or not unusually judges that possible range sets based on the sensor characteristics of this sensor.
9. aircondition according to claim 6 is characterized in that,
Described comparison other could detection unit when judging whether each sensor is the subject sensor of described mutual comparison, the sensor that will detect the state of the detected object that do not return stable state is not as the subject sensor of described mutual comparison.
10. according to each described aircondition in the claim 1～9, it is characterized in that possessing:
The counter-measure information storage part, it is for each sensor, to be judged to be the situation that counter-measure when unusual is divided into the expression detected value lower than the situation of the detected value that relatively the detected value of subject sensor group is high mutually and expression by described abnormality juding portion, and relevant counter-measure information will be stored;
Notice portion, it is utilizing described abnormality juding portion to be judged to be when unusual as the sensor that N/R judgement object is arranged, based on the detected value of this sensor, the counter-measure that notice is corresponding.
11. energy device, possess the fluid circulating path of the fluid circulation that makes the energy that is added regulation and comprise and be used for the fluid state that the state to described fluid detects and detect with sensor at interior a plurality of sensors, in the process that makes described fluid circulation, the work that makes described release of fluid energy and stipulate, described energy device is characterised in that
Possess abnormality juding portion, after stopping described fluid interpolation energy, when described fluid had returned stable state, this abnormality juding portion compared the detected value of each sensor mutually, and it is no abnormal to judge that each sensor has.
CN2010101110316A 2009-03-23 2010-02-02 Air conditioner and energy device Expired - Fee Related CN101846414B (en)

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