CN105423978A - Method, device and system for detecting length of engineering piping of multi-split system - Google Patents
Method, device and system for detecting length of engineering piping of multi-split system Download PDFInfo
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- CN105423978A CN105423978A CN201510823540.4A CN201510823540A CN105423978A CN 105423978 A CN105423978 A CN 105423978A CN 201510823540 A CN201510823540 A CN 201510823540A CN 105423978 A CN105423978 A CN 105423978A
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- 238000000034 method Methods 0.000 title claims abstract description 41
- 238000001514 detection method Methods 0.000 claims abstract description 26
- 238000001704 evaporation Methods 0.000 claims description 32
- 238000010438 heat treatment Methods 0.000 claims description 18
- 238000005057 refrigeration Methods 0.000 claims description 16
- 238000010168 coupling process Methods 0.000 claims description 10
- 238000005859 coupling reaction Methods 0.000 claims description 10
- 230000008878 coupling Effects 0.000 claims description 9
- 239000003507 refrigerant Substances 0.000 claims description 6
- 238000005259 measurement Methods 0.000 description 11
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- 239000000203 mixture Substances 0.000 description 5
- 238000004891 communication Methods 0.000 description 4
- 238000005070 sampling Methods 0.000 description 4
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- 238000004364 calculation method Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
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Abstract
The invention discloses a method, a device and a system for detecting the length of an engineering piping of a multi-split system. Wherein, the method comprises the following steps: reading a pressure detection value of a pressure sensor in an outdoor unit corresponding to an operation mode according to the operation mode of a first indoor unit, wherein the first indoor unit is any one indoor unit in a multi-split system; reading the inlet and outlet temperature of a heat exchanger installed in a first indoor unit; and calculating the length of the engineering piping for connecting the first indoor unit to the outdoor unit according to the pressure detection value and the inlet-outlet temperature. The invention solves the technical problem that the engineering piping length of the multi-connected indoor unit under different engineering differences cannot be accurately detected in the prior art.
Description
Technical field
The present invention relates to field of air conditioning, in particular to a kind of detection method of engineering piping length of multiple on-line system, device and system.
Background technology
At present, in the use of air-conditioning products, more and more very extensive to the application of multi-connected machine application, multi-connected machine adopts an off-premises station to connect two or more indoor set by pipe arrangement, reach the control object to multiple indoor temperature, in the prior art, multi-connected machine adopts off-premises station sensor to control multiple indoor set, but because the project installation of multi-connected machine product uses very flexible, under same control objectives, because the piping length of multiple indoor set is different, refrigerant circulation is not identical to state during each indoor set yet, cause the control out of true to indoor set, therefore the engineering piping length of multiple indoor sets of multi-connected machine is measured, can realize controlling the differentiation of multiple indoor set.
For the technical matters of engineering piping length that accurately cannot detect multi-joint indoor set under different engineering difference in prior art, at present effective solution is not yet proposed.
Summary of the invention
Embodiments provide a kind of detection method of engineering piping length of multiple on-line system, device and system, at least to solve in prior art the technical matters of the technical matters of the engineering piping length that accurately cannot detect multi-joint indoor set under different engineering difference.
According to an aspect of the embodiment of the present invention, provide a kind of detection method of engineering piping length of multiple on-line system, comprise: the detected pressure value reading pressure transducer corresponding to operational mode in off-premises station according to the operational mode of the first indoor set, wherein, the first indoor set is any one indoor set in multiple on-line system; Read the out temperature of the heat interchanger be arranged in the first indoor set; And calculate according to detected pressure value and out temperature the length that the first indoor set accesses the engineering pipe arrangement of off-premises station.
According to another aspect of the embodiment of the present invention, provide a kind of pick-up unit of engineering piping length of multiple on-line system, comprise: the first read module, for reading the detected pressure value of pressure transducer corresponding to operational mode in off-premises station according to the operational mode of the first indoor set, wherein, the first indoor set is any one indoor set in multiple on-line system; Second read module, for reading the out temperature of the heat interchanger be arranged in the first indoor set; And computing module, for calculating the length of the engineering pipe arrangement of the first indoor set access off-premises station according to detected pressure value and out temperature.
According to another aspect of the embodiment of the present invention, provide a kind of detection system of engineering piping length of multiple on-line system, comprise: the temperature sensor being arranged on heat exchanger inlet and outlet, for detecting the out temperature of the heat interchanger in the first indoor set, wherein, the first indoor set is any one indoor set in multiple on-line system; Be placed in the pressure transducer in off-premises station, for detecting the detected pressure value corresponding to the operational mode of the first indoor set; And processor, be connected with temperature sensor and pressure transducer, for calculating the length of the engineering pipe arrangement of the first indoor set access off-premises station according to detected pressure value and out temperature.
In embodiments of the present invention, adopt the mode of the detected pressure value reading pressure transducer corresponding to operational mode in off-premises station, by reading the out temperature of the heat interchanger be arranged in indoor set, reach the object of the length calculating the engineering pipe arrangement of the first indoor set access off-premises station according to the detected pressure value of pressure transducer and the out temperature of heat interchanger, thus achieve the technique effect of the engineering piping length detecting multi-joint indoor set, and then solve in prior art the technical matters of technical matters of the engineering piping length that accurately cannot detect multi-joint indoor set under different engineering difference.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the process flow diagram of the detection method of the engineering piping length of a kind of multiple on-line system according to the embodiment of the present invention 1;
Fig. 2 is the process flow diagram of a kind of optional multi-joint unit survey engineering piping length according to the embodiment of the present invention 1;
Fig. 3 is the structural representation of the pick-up unit of the engineering piping length of a kind of optional multiple on-line system according to the embodiment of the present invention 2;
Fig. 4 is the structural representation of the detection system of the engineering piping length of a kind of optional multiple on-line system according to the embodiment of the present invention 3; And
Fig. 5 is the structural representation of the multi-joint unit of a kind of optional survey engineering piping length according to the embodiment of the present invention 3.
Embodiment
The present invention program is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the embodiment of a part of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, should belong to the scope of protection of the invention.
It should be noted that, term " first ", " second " etc. in instructions of the present invention and claims and above-mentioned accompanying drawing are for distinguishing similar object, and need not be used for describing specific order or precedence.Should be appreciated that the data used like this can be exchanged in the appropriate case, so as embodiments of the invention described herein can with except here diagram or describe those except order implement.In addition, term " comprises " and " having " and their any distortion, intention is to cover not exclusive comprising, such as, contain those steps or unit that the process of series of steps or unit, method, system, product or equipment is not necessarily limited to clearly list, but can comprise clearly do not list or for intrinsic other step of these processes, method, product or equipment or unit.
Embodiment 1
According to the embodiment of the present invention, provide a kind of detection method embodiment of engineering piping length of multi-joint indoor set, it should be noted that, can perform in the computer system of such as one group of computer executable instructions in the step shown in the process flow diagram of accompanying drawing, and, although show logical order in flow charts, in some cases, can be different from the step shown or described by order execution herein.
This multiple on-line system comprises: off-premises station, the multiple indoor sets by engineering pipe arrangement access off-premises station, the heat interchanger be placed in indoor set, the temperature sensor being arranged on heat exchanger inlet and outlet and the pressure transducer be placed in off-premises station.
Fig. 1 is the process flow diagram of the detection method of the engineering piping length of a kind of multiple on-line system according to the embodiment of the present invention 1, and as shown in Figure 1, the method comprises the steps:
Step S102, read the detected pressure value of pressure transducer corresponding to operational mode in off-premises station according to the operational mode of the first indoor set, wherein, the first indoor set is any one indoor set in multiple on-line system.
In above-mentioned steps S102, the operational mode of the first indoor set can be refrigeration mode or heating mode, multiple pressure transducers of the off-premises station of multiple on-line system detect different pressure, under the pattern that indoor set runs, obtain the detected value of corresponding pressure transducer, this pressure transducer can for being placed at least two pressure transducers on the condenser of off-premises station, the pressure that off-premises station is corresponding with it under refrigeration mode or heating mode is in respectively for detecting indoor set, in a kind of optional embodiment, above-mentioned pressure transducer can be the intelligent pressure sensor with water-tight corrosion-proof function, intelligent sensor transfers to detecting the force value obtained the device needing this force value by built-in microprocessor, do not need artificially to read pressure detection numerical value, and same power supply can be used with off-premises station, wait in use and add corresponding potential device according to the power demands of pressure transducer, be reached for the effect that pressure transducer is powered, above-mentioned pressure transducer can also possess the function of overvoltage power-off, to the protective effect of the off-premises station in on-line system, when pressure transducer detects that condenser pressure value is greater than threshold values, operation circuit disconnects, reach the protective effect to off-premises station entirety, in another kind optionally example, at all right solar energy intelligent pressure transducer of the pressure transducer being placed in off-premises station, except there is the function of intelligent transportation force value, also have and self gather the effect of sun power as energy resource supply, then, be applied to pressure transducer of the present invention and be not limited in this, other pressure monitoring devices that can reach above-mentioned effect all can use.
Step S104, reads the out temperature of the heat interchanger be arranged in the first indoor set.
As an Alternate embodiments, heat interchanger can be installed in indoor set, the acquisition of out temperature can be undertaken by the intelligent temperature sensor of water-tight corrosion-proof, the measurement range of above-mentioned intelligent temperature sensor can make-50 degrees Celsius to 1600 degrees Celsius, the measurement requirement of the out temperature of air-condition heat exchanger can be met, measuring accuracy is greater than 0.05 degree Celsius, namely the deviation of measured value and actual temperature value is not more than 0.05 degree Celsius, the temperature range of said temperature sensor can be certainly also be not limited to this, other modes obtaining heat exchanger inlet and outlet temperature value also have same effect.
Step S106, calculates the length of the engineering pipe arrangement of the first indoor set access off-premises station according to detected pressure value and out temperature.
In above-mentioned steps S106, pressure transducer is the above-mentioned pressure transducer being placed in off-premises station, this pressure transducer is placed on the condenser of off-premises station, the out temperature of detection heat interchanger can be the out temperature under indoor set is in refrigeration mode, also can be the out temperature under indoor set is in heating mode, in a kind of optional embodiment, can be processor as indoor set for calculating the device of the engineering piping length of indoor set, this processor can be the PLC device storing pre-set programs, by the temperature sensor communication outside the mode of wired or wireless connection and the pressure transducer of off-premises station and heat interchanger, read the measured value of above-mentioned pressure transducer and temperature sensor, calculating according to the program preset, and result of calculation can be shown by display screen.
In a kind of optional embodiment, above-mentioned multiple on-line system is the air-conditioning system comprising multiple indoor set, the indoor set of this multiple on-line system is connected with off-premises station by engineering pipe arrangement, when needing the engineering piping length of the some indoor sets detecting multiple indoor set in multiple on-line system, first detecting of pressure transducer in this multiple on-line system off-premises station is obtained, it should be noted that, when obtaining this detected pressure value, need the pressure monitoring value obtaining corresponding pressure transducer according to the operational mode of above-mentioned indoor set; And then obtain the measured value of heat exchanger inlet and outlet temperature sensor in this indoor set; Calculated by the formula preset in conjunction with the force value of acquisition and temperature value again, obtain the engineering piping length of this indoor set.
As from the foregoing, the method that the present embodiment provides is by obtaining the detected value of corresponding pressure sensor according to the operational mode of indoor set, and obtain the out temperature of heat interchanger in indoor set, again by obtaining the engineering piping length of multiple indoor set in multiple on-line system to the calculating of pressure transducer detected value and heat exchanger inlet and outlet temperature value, achieve in multiple on-line system flexible for installation, and when in same multiple on-line system, multiple indoor set piping length is all not identical, the engineering piping length of each indoor set is carried out to the technique effect accurately measured, reach and measure in different multiple on-line system, the object of multiple indoor set engineering piping length, and then for accurately controlling to provide accurate engineering piping length parameter according to engineering piping length point situation when a multiple indoor set of off-premises station traction runs in multiple on-line system, solve in prior art the technical matters of the piping length that accurately cannot detect multi-joint indoor set under different engineering difference.
Alternatively, in the above embodiments of the present application, in step s 102, comprise when being placed in the pressure transducer in off-premises station: when the condensing pressure sensor for detection system condensing pressure and the evaporating pressure sensor for detection system evaporating pressure, the detected pressure value reading pressure transducer corresponding to described operational mode in described off-premises station according to the operational mode of the first indoor set comprises:
Step S1021, when the operational mode of the first indoor set is refrigeration mode, the first indoor set reads the detected pressure value of the evaporating pressure sensor in off-premises station.
In above-mentioned steps S1021, shown in composition graphs 2, in a kind of optional embodiment, evaporating pressure sensor in off-premises station and condensing pressure sensor adopt unified power supply, when the first indoor set is in refrigeration mode, processor can control evaporating pressure sensor and connect power supply and the evaporating pressure of start detection off-premises station, and the evaporating pressure detected value obtaining off-premises station is transferred to the processor of indoor set by evaporating pressure sensor.
Step S1023, when the operational mode of the first indoor set is heating mode, the first indoor set reads the detected pressure value of the condensing pressure sensor in off-premises station.
In above-mentioned steps S1023, shown in composition graphs 2, if when the operational mode through judging the first indoor set is heating mode, processor can control to stop evaporating pressure sensor power, make evaporating pressure sensor conducts and the condensing pressure of start detection off-premises station, and condensing pressure is transferred in processor.It can thus be appreciated that, the method provided at above-described embodiment is by obtaining the detected pressure value of off-premises station evaporating pressure sensor under being in refrigeration mode at indoor set, and under interior machine is in heating mode, obtain the method for the detected pressure value of off-premises station condensation pressure transducer, achieve the object that the operational mode different according to indoor set obtains the detected pressure value of corresponding pressure sensor.
It can thus be appreciated that, method provided by the present invention adopts the method judging indoor set operational mode, the detected value of evaporating pressure sensor is obtained when indoor set is in refrigeration mode, the mode of the detected value of condensing pressure sensor is obtained under indoor set is in heating mode, the engineering piping length achieving the indoor set for obtaining different operational mode provides the technical purpose of calculating parameter, solves the problem that indoor set accurately cannot measure its engineering piping length under different operational mode.
Optionally, in the above embodiments of the present application, the length calculating the engineering pipe arrangement of the first indoor set access off-premises station in step s 106 according to the detected pressure value of pressure transducer and the out temperature of heat interchanger comprises the following steps:
Step S1061, the state value of the first indoor set is calculated by preset formula according to the detected pressure value of pressure transducer and heat exchanger inlet and outlet temperature, wherein, the state value that first indoor set is corresponding different under multiple different engineering piping length, state value enters the evaporating state of heat interchanger for assessment of refrigerant after pipe arrangement.
Concrete, in above-mentioned steps S1061, the result that above-mentioned state value is calculated by preset formula is assessed the evaporating state that refrigerant enters heat interchanger, and above-mentioned preset formula can be:
The state value S=n of the first indoor set [(| t
o-t
i|/2)-p],
Wherein, n is with the relevant correction factor of indoor environment, t
ofor the outlet temperature of heat interchanger, t
ifor the inlet temperature of heat interchanger, p is the detected pressure value of pressure transducer.In the pressure of pressure transducer obtaining off-premises station in multi-connected machine and indoor set heat interchanger out temperature after, the force value of acquisition and temperature value are carried out the state value calculating acquisition first indoor set, in a kind of optional embodiment, the force value that processor can obtain pressure transducer and the temperature value that temperature sensor obtains such as to carry out at the sampling in cycle, in order to ensure the degree of accuracy calculated, sampling period can be the value being less than 0.2s, the mean value of multiple sampled value can be tried to achieve again, think that the sampled value larger with mean value gap is sampling error, sampling error can be weeded out, multiple sampled value can also be carried out dividing into groups according to the measurement moment and given different weighted values, such as, distance being calculated sampled value within one minute moment as first group gives weighted value 0.4, distance to calculate the measured value in one minute to two minutes moment as second group and gives weighted value 0.3, distance to calculate the sampled value in two minutes to three minutes moment as the 3rd group and gives weighted value 0.2, distance to calculate the sampled value in three minutes to four minutes moment as the 4th group and gives weighted value 0.1, the sampled value tax weight limit value that the distance calculating moment is nearer, the sampled value of weighted value to pressure transducer and temperature sensor according to each group is weighted average computation, can using this calculated value as the force value adopted when calculating indoor set engineering piping length and temperature value.
In a kind of optional embodiment, shown in composition graphs 2, when the detected value of evaporating pressure sensor is P
1, the detected value of condensing pressure sensor is P
2, the inlet temperature of heat interchanger is T
1, outlet temperature is T
2when, if the operational mode of the first indoor set is refrigeration mode, when the first indoor set is in refrigerating state, the state value F of the first indoor set
cold=f (p
1, t
1, t
2)=n [(| t
2-t
1|/2)-p
1], when the first indoor set be in heat state, the state value G of the first indoor set
heat=g (p
2, t
1, t
2)=n [(| t
2-t
1|/2)-p
2].
Step S1063, obtains the length of the engineering pipe arrangement of the first indoor set access off-premises station according to the state value inquiry of the first indoor set.
As the optional embodiment of one, what the state value for the first indoor set was inquired about can be multiple empirical value, and wherein, multiple empirical value is the state value of indoor set under multiple different piping length respectively corresponding to refrigerating state and heating mode.
As from the foregoing, the method that above-described embodiment provides is passed through according to the detected pressure value of pressure transducer and the out temperature value computing mode value of heat interchanger, and the engineering piping length of indoor set is inquired about according to the state value calculating gained, be reached through the object of the state value inquiry indoor set engineering piping length calculating indoor set, solve in prior art the technical matters of the technical matters of the engineering piping length that accurately cannot detect multi-joint indoor set under different engineering difference.
Optionally, according to the state value of the first indoor set calculated in step S1063, the engineering piping length being obtained above-mentioned first indoor set by inquiry is comprised the steps:
Step S1065: state value is contrasted with the multiple empirical values preset respectively.
In above-mentioned steps S1065, the state value and multiple empirical value that calculate the indoor set of gained are contrasted, wherein, empirical value can be through the state value of the indoor set precalculating the different engineering piping lengths obtained, in a kind of optional embodiment, the empirical value of indoor set can be obtained as follows: first choose multiple multiple indoor sets with different engineering piping length, then the detected value of multiple different indoor set off-premises station pressure transducer under normal operating conditions and the out temperature value of indoor set heat exchanger is obtained, calculated by formula according to the detected pressure value obtained and temperature value again, obtain the state value of multiple indoor sets with multiple different mounting distance, next state value is above-mentioned empirical value.
Step S1067: search the empirical value being less than or equal to predetermined threshold value with the difference of state value, obtains the coupling empirical value corresponding with the first indoor set.
In above-mentioned steps S1067, the empirical value be close with state value is searched in empirical value, in a kind of optional embodiment, the difference of empirical value and state value can be calculated, when the absolute value of difference is less than or equal to default threshold values, think that the first indoor set is identical with the engineering piping length of the indoor set with this empirical value.
Step S1069: confirm that the engineering piping length that coupling empirical value is corresponding is the length that the first indoor set accesses the engineering pipe arrangement of off-premises station.
In above-mentioned steps S1069, after obtaining the empirical value mated with the state value of the first indoor set, the indoor set engineering piping length that this empirical value is corresponding is the engineering piping length of the first indoor set.
It can thus be appreciated that, the method of the method that above-described embodiment provides by the state value of indoor set and empirical value are carried out contrasting, and search the empirical value being less than or equal to pre-set threshold value with the difference of state value, using the engineering piping length of engineering piping length corresponding for this empirical value as the first indoor set, reach the object being obtained indoor set engineering piping length by the contrast of indoor set state value and default empirical value, solve in prior art the technical matters of the technical matters of the engineering piping length that accurately cannot detect multi-joint indoor set under different engineering difference.
Optionally, in the above embodiments of the present application, in step S1065 before being contrasted with the multiple empirical values preset respectively by state value, method also comprises:
Step S1071, preserves multiple empirical value and the engineering piping length corresponding with each empirical value by database.
In above-mentioned steps S1071, before the state value of the first indoor set and empirical value are contrasted, after obtaining the empirical value of indoor set and engineering piping length corresponding to empirical value, the empirical value and engineering piping length corresponding to each empirical value that obtain is preserved by database, in a kind of optional embodiment, database file can be numbered by multiple indoor set, the pressure transducer detected value of the temperature of above-mentioned indoor set heat exchanger and off-premises station, by the above-mentioned indoor of calculating gained and empirical value and the engineering piping length of above-mentioned indoor set form.
It can thus be appreciated that, the method that above-described embodiment provides is by preserving the method for empirical value and engineering piping length corresponding to each empirical value in a database, achieve after can searching the empirical value corresponding with the first indoor set state value in a database, the technique effect of corresponding engineering piping length can be obtained, solve in prior art the technical matters of the piping length that accurately cannot detect multi-joint indoor set under different engineering difference.
Optionally, in the above embodiments of the present application, the temperature sensor being arranged on heat exchanger inlet and outlet comprises: for detecting the first temperature sensor of heat interchanger inlet temperature and the second temperature sensor for detecting heat exchanger outlet temperature, wherein, before reading the out temperature of the heat interchanger be arranged in the first indoor set, method also comprises:
Step S1073, confirms that multiple on-line system operates steadily.
In above-mentioned steps S1073, before the heat exchanger inlet and outlet temperature of reading first indoor set, confirm that multiple on-line system operates steadily.
It can thus be appreciated that, the method that above-described embodiment provides is by confirming that multiple on-line system operates steadily in the measurement carrying out heat exchanger inlet and outlet temperature, reach the accurate technical purpose of measurement data, solve owing to carrying out when multiple on-line system fluctuation of service measuring the measurement result out of true caused, cause the coarse problem of measurement of the engineering piping length of indoor set.
Fig. 2 is the process flow diagram of a kind of optional multi-joint unit survey engineering piping length according to the embodiment of the present invention.
Shown in composition graphs 2, below to connect the multiple on-line system of multiple indoor set, be described in detail as follows to the example under a kind of application scenarios of the above embodiments of the present application:
S21: confirm that multiple on-line system operates steadily.
Concrete, in above-mentioned steps S21, before the engineering piping length of indoor set detecting multiple on-line system, determine that multiple on-line system operates steadily.
S22: the operational mode judging indoor set.
Concrete, in above-mentioned steps S22, before the detected value of detected pressures sensor and temperature sensor, judge the operational mode needing the indoor set detecting engineering piping length, when above-mentioned indoor set is in cooling operation mode, enter step S23, when above-mentioned indoor set is in heating operation mode, enter step S28.
S23: the detected value P obtaining evaporating pressure sensor
1.
Concrete, in above-mentioned steps S23, obtain the detected value of off-premises station evaporating pressure sensor when indoor set is in refrigeration mode.
S24: obtain heat exchanger inlet and outlet temperature T respectively
1and T
2.
Concrete, in above-mentioned steps S24, obtain heat exchanger inlet and outlet temperature T
1and T
2.
S25: the state value F=f (P of indoor set under calculating refrigeration mode
1, T
1, T
2).
Concrete, in above-mentioned steps S25, the force value obtained according to above step and temperature value carry out the state value calculating indoor set.
S26: state value and empirical value are compared.
Concrete, in above-mentioned steps S26, the state value above step being calculated gained with to pre-set and the empirical value being stored in database is compared.
S27: acquisition is in the engineering piping length of the indoor under refrigeration mode.
Concrete, in above-mentioned steps S27, by the state value of indoor set and empirical value comparison, after obtaining comparison result, think that the engineering piping length corresponding with the empirical value of comparison result is the engineering piping length of indoor set.
S28: the measured value P obtaining condensing pressure sensor
2.
Concrete, in above-mentioned steps S28, under indoor set is in heating mode, obtain the measured value of condensing pressure sensor on outdoor condenser.
S29: obtain heat exchanger inlet and outlet temperature T
1, T
2.
Concrete, in above-mentioned steps S29, obtain heat exchanger inlet and outlet temperature T
1and T
2.
S210: the state value G=g (P of indoor set under calculating heating mode
2, T
1, T
2).
Concrete, in above-mentioned steps S210, the force value obtained according to above step and temperature value carry out the state value calculating indoor set.
S211: state value and empirical value are compared.
Concrete, in above-mentioned steps S211, the state value above step being calculated gained with to pre-set and the empirical value being stored in database is compared.
S212: acquisition is in the engineering piping length of the indoor under heating mode.
Concrete, in above-mentioned steps S212, by the state value of indoor set and empirical value comparison, after obtaining comparison result, think that the engineering piping length corresponding with the empirical value of comparison result is the engineering piping length of indoor set.
Embodiment 2
Fig. 3 is the structural representation of the pick-up unit of the engineering piping length of a kind of optional multiple on-line system according to the embodiment of the present invention 2.Be in the object of description, the architecture painted is only an example of when environment, not limitation being proposed to the usable range of the application or function, also should not have any dependence or demand by being used for a kind of device obtaining the engineering piping length of multiple on-line system to be considered as to arbitrary assembly of Fig. 3 or combination.
This multiple on-line system comprises: off-premises station, the multiple indoor sets by engineering pipe arrangement access off-premises station, the heat interchanger be placed in indoor set, the temperature sensor being arranged on heat exchanger inlet and outlet and the pressure transducer be placed in off-premises station.
As shown in Figure 3, this device being used for the engineering piping length obtaining multiple on-line system can comprise the first read module 30, second read module 32 and computing module 34, wherein:
First read module 30, for reading the detected pressure value of pressure transducer corresponding to operational mode in off-premises station according to the operational mode of the first indoor set, wherein, the first indoor set is any one indoor set in multiple on-line system.
Concrete, in above-mentioned first reading device, multiple pressure transducers of the off-premises station of multiple on-line system detect different pressure, this pressure transducer can for being placed at least two pressure transducers on the condenser of off-premises station, the pressure that off-premises station is corresponding with it under refrigeration mode or heating mode is in respectively for detecting indoor set, reading device of the present invention is not limited in above-mentioned pressure transducer, and other pressure monitoring devices that can reach above-mentioned effect all can use.
Second read module 32, for reading the out temperature of the heat interchanger be arranged in the first indoor set.
Concrete, above-mentioned second read module can be temperature sensor, but is not limited to this, also can be that other can the device of detected temperatures value.
Computing module 34, for calculating the length of the engineering pipe arrangement of the first indoor set access off-premises station according to detected pressure value and out temperature.
Concrete, above-mentioned computing module can be mounted in the processor in indoor set, this processor can be the PLC device storing pre-set programs, by the temperature sensor communication outside the mode of wired or wireless connection and the pressure transducer of off-premises station and heat interchanger, read the measured value of above-mentioned pressure transducer and temperature sensor, calculating according to the program preset, and result of calculation can shown by display screen.
As from the foregoing, the device that the present embodiment provides obtains the detected value of corresponding pressure sensor according to the operational mode of indoor set by the first read module, and the out temperature of heat interchanger in indoor set is obtained by the second read module, by computing module, the calculating of pressure transducer detected value and heat exchanger inlet and outlet temperature value is obtained to the engineering piping length of multiple indoor set in multiple on-line system again, achieve in multiple on-line system flexible for installation, and when in same multiple on-line system, multiple indoor set piping length is all not identical, the engineering piping length of each indoor set is carried out to the technique effect accurately measured, reach and measure in different multiple on-line system, the object of multiple indoor set engineering piping length, and then for accurately controlling to provide accurate engineering piping length parameter according to engineering piping length point situation when a multiple indoor set of off-premises station traction runs in multiple on-line system, solve in prior art the technical matters of the piping length that accurately cannot detect multi-joint indoor set under different engineering difference.
Optionally, the application's said apparatus can also comprise: the first reading submodule and the second reading submodule, wherein,
First reading submodule, for when the operational mode of the first indoor set is refrigeration mode, the first indoor set reads the detected pressure value of the evaporating pressure sensor in off-premises station.
Second reading submodule, when the operational mode of the first indoor set is heating mode, the first indoor set reads the detected pressure value of the condensing pressure sensor in off-premises station.
It can thus be appreciated that, device provided by the present invention adopts the first reading submodule to obtain the detected value of evaporating pressure sensor when indoor set is in refrigeration mode, adopt the second reading submodule under indoor set is in heating mode, obtain the mode of the detected value of condensing pressure sensor, the engineering piping length achieving the indoor set for obtaining different operational mode provides the technical purpose of calculating parameter, solves the problem that indoor set accurately cannot measure its engineering piping length under different operational mode.
Optionally, the application's said apparatus can also comprise: calculating sub module and enquiry module.
Calculating sub module, for calculating the state value of the first indoor set according to the detected pressure value of pressure transducer and heat exchanger inlet and outlet temperature by preset formula, wherein, state value is the state value of the first indoor set corresponding under multiple different engineering piping length, and state value enters the evaporating state of heat interchanger for assessment of refrigerant after pipe arrangement.
Enquiry module, for obtaining the length of the engineering pipe arrangement of the first indoor set access off-premises station according to the state value inquiry of the first indoor set.
As from the foregoing, the device that above-described embodiment provides is by the out temperature value computing mode value of calculating sub module according to the detected pressure value of pressure transducer and heat interchanger, and inquired about the engineering piping length of indoor set according to the state value calculating gained by enquiry module, be reached through the object of the state value inquiry indoor set engineering piping length calculating indoor set, solve in prior art the technical matters of the technical matters of the engineering piping length that accurately cannot detect multi-joint indoor set under different engineering difference.
Optionally, the application's said apparatus can also comprise: comparing module, inquiry submodule and first confirm module, wherein,
Comparing module, for contrasting state value with the multiple empirical values preset respectively.
Concrete, the state value and multiple empirical value that calculate the indoor set of gained contrast by above-mentioned comparing module, wherein, empirical value can be through the state value of the indoor set precalculating the different engineering piping lengths obtained, in a kind of optional embodiment, the empirical value of indoor set can be obtained as follows: first choose multiple multiple indoor sets with different engineering piping length, then the detected value of multiple different indoor set off-premises station pressure transducer under normal operating conditions and the out temperature value of indoor set heat exchanger is obtained, calculated by formula according to the detected pressure value obtained and temperature value again, obtain the state value of multiple indoor sets with multiple different mounting distance, next state value is above-mentioned empirical value.
Inquiry submodule, for searching the empirical value being less than or equal to predetermined threshold value with the difference of state value, obtains the coupling empirical value corresponding with the first indoor set.
Concrete, above-mentioned inquiry submodule searches the empirical value be close with state value in empirical value, in a kind of optional embodiment, the difference of empirical value and state value can be calculated, when the absolute value of difference is less than or equal to default threshold values, think that the first indoor set is identical with the engineering piping length of the indoor set with this empirical value.
First confirms module, mates for confirming the length that engineering piping length corresponding to empirical value is the engineering pipe arrangement of the first indoor set access off-premises station.
It can thus be appreciated that, the state value of indoor set and empirical value are contrasted by comparing module by the device that above-described embodiment provides, and search by inquiry submodule the empirical value being less than or equal to pre-set threshold value with the difference of state value, then confirm that module is using the engineering piping length of engineering piping length corresponding for this empirical value as the first indoor set by first, reach the object being obtained indoor set engineering piping length by the contrast of indoor set state value and default empirical value, solve in prior art the technical matters of the technical matters of the engineering piping length that accurately cannot detect multi-joint indoor set under different engineering difference.
Optionally, the application's said apparatus can also comprise: preserve module.
Preserve module, for being preserved multiple empirical value and the engineering piping length corresponding with each empirical value by database.
Concrete, above-mentioned preservation module is before contrasting the state value of the first indoor set and empirical value, after obtaining the empirical value of indoor set and engineering piping length corresponding to empirical value, preserve the empirical value that obtains and engineering piping length corresponding to each empirical value by database.
It can thus be appreciated that, the device that above-described embodiment provides is by preserving the method for empirical value and engineering piping length corresponding to each empirical value in a database, achieve after can searching the empirical value corresponding with the first indoor set state value in a database, the technique effect of corresponding engineering piping length can be obtained, solve in prior art the technical matters of the piping length that accurately cannot detect multi-joint indoor set under different engineering difference.
Optionally, the application's said apparatus can also comprise: second confirms module.
Second confirms module, for confirming that multiple on-line system operates steadily.
Concrete, above-mentioned second confirms that module is before the heat exchanger inlet and outlet temperature of reading first indoor set, confirms that multiple on-line system operates steadily.
It can thus be appreciated that, by second, the device that above-described embodiment provides confirms that module confirms that multiple on-line system operates steadily in the measurement carrying out heat exchanger inlet and outlet temperature, reach the accurate technical purpose of measurement data, solve owing to carrying out when multiple on-line system fluctuation of service measuring the measurement result out of true caused, cause the coarse problem of measurement of the engineering piping length of indoor set.
Embodiment 3
Multiple on-line system comprises: off-premises station, by engineering pipe arrangement access off-premises station multiple indoor sets, the heat interchanger be placed in indoor set.
Fig. 4 is the structural representation of the detection system of the engineering piping length of a kind of optional multiple on-line system according to the embodiment of the present invention 3, and as shown in Figure 4, this system comprises: temperature sensor 10, pressure transducer 12 and processor 14.
Be arranged on the temperature sensor 10 of heat exchanger inlet and outlet, for detecting the out temperature of the heat interchanger in the first indoor set, wherein, the first indoor set is any one indoor set in multiple on-line system.
Concrete, said temperature sensor is installed on the heat exchanger inlet and outlet of indoor set, at least two heat interchanger for detecting the heat exchanger inlet and outlet temperature of indoor set in multiple on-line system, for calculating the state value of indoor set.
Be placed in the pressure transducer 12 in off-premises station, for detecting the detected pressure value corresponding to the operational mode of the first indoor set.
Concrete, above-mentioned pressure transducer is placed on the condenser of above-mentioned off-premises station, detects evaporating pressure and the condensing pressure of off-premises station under at least two pressure transducers are respectively used to the state operated steadily in multiple on-line system; Wherein, computing mode value when the indoor set that the evaporating pressure detected value that above-mentioned pressure transducer detects is used for multiple on-line system is in cooling operation mode, the condensing pressure of detection is used for the computing mode value when the indoor set of multiple on-line system is in heating mode.
Processor 14, is connected with temperature sensor and pressure transducer, for calculating the length of the engineering pipe arrangement of the first indoor set access off-premises station according to detected pressure value and out temperature.
Concrete, above-mentioned processor has micro-processing capacity, be connected with two pressure transducers of off-premises station with each temperature sensor of indoor set multiple in multiple on-line system, for obtaining the evaporating pressure sensor of off-premises station in multiple on-line system when detecting the engineering piping length of indoor set, the force value of condensing pressure sensor and the measured value of heat exchanger inlet and outlet temperature sensor, and above-mentioned multiple measured value is substituted into the formula preset obtains one or more indoor set state value by calculating, after acquisition state value, above-mentioned state value and the empirical value being stored in processor inside are compared by processor, search the empirical value being less than or equal to pre-set threshold value with the difference of above-mentioned state value, and export being less than or equal to engineering piping length corresponding to the empirical value of pre-set threshold value with the difference of above-mentioned state value as the engineering piping length of indoor set.
Fig. 5 is the structural representation of the multi-joint unit of a kind of optional survey engineering piping length according to the embodiment of the present invention 3.Shown in composition graphs 5, in a kind of optional embodiment, the multi-joint unit of survey engineering piping length can comprise off-premises station 1, evaporating pressure sensor 2, condensing pressure sensor 3, indoor set 4, indoor set heat exchanger 5, heat interchanger inlet temperature sensor 6, heat exchanger outlet temperature sensor 7 and processor 8, this multi-joint unit also comprises other the multiple indoor sets except indoor set 4, after this multi-joint unit operates steadily, the measured value that processor obtains two pressure transducers and two temperature sensors calculates accordingly according to the running status of indoor set, and result of calculation and the empirical value be stored in advance in processor are compared, search the empirical value being no more than pre-set threshold value with the difference of state value, the engineering piping length finally thinking corresponding to above-mentioned empirical value is the engineering piping length of above-mentioned indoor set.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
In the above embodiment of the present invention, the description of each embodiment is all emphasized particularly on different fields, in certain embodiment, there is no the part described in detail, can see the associated description of other embodiments.
In several embodiments that the application provides, should be understood that, disclosed technology contents, the mode by other realizes.Wherein, device embodiment described above is only schematic, the division of such as unit, can be that a kind of logic function divides, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, and the indirect coupling of unit or module or communication connection can be electrical or other form.
The unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed on multiple unit.Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, also can be that the independent physics of unit exists, also can two or more unit in a unit integrated.Above-mentioned integrated unit both can adopt the form of hardware to realize, and the form of SFU software functional unit also can be adopted to realize.
If integrated unit using the form of SFU software functional unit realize and as independently production marketing or use time, can be stored in a computer read/write memory medium.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words or all or part of of this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprises all or part of step of some instructions in order to make a computer equipment (can be personal computer, server or the network equipment etc.) perform each embodiment method of the present invention.And aforesaid storage medium comprises: USB flash disk, ROM (read-only memory) (ROM, Read-OnlyMemory), random access memory (RAM, RandomAccessMemory), portable hard drive, magnetic disc or CD etc. various can be program code stored medium.
Below be only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (13)
1. the detection method of the engineering piping length of a multiple on-line system, described multiple on-line system comprises: off-premises station, the multiple indoor sets being accessed described off-premises station by engineering pipe arrangement, the heat interchanger be placed in described indoor set, the temperature sensor being arranged on described heat exchanger inlet and outlet and the pressure transducer be placed in described off-premises station, it is characterized in that, described method comprises:
Read the detected pressure value of pressure transducer corresponding to described operational mode in described off-premises station according to the operational mode of the first indoor set, wherein, described first indoor set is any one indoor set in described multiple on-line system;
Read the out temperature of the heat interchanger be arranged in described first indoor set; And
The length that described first indoor set accesses the engineering pipe arrangement of described off-premises station is calculated according to described detected pressure value and described out temperature.
2. method according to claim 1, it is characterized in that, comprise when being placed in the pressure transducer in described off-premises station: when the condensing pressure sensor for detection system condensing pressure and the evaporating pressure sensor for detection system evaporating pressure, wherein, read the detected pressure value of pressure transducer corresponding to described operational mode in described off-premises station according to the operational mode of the first indoor set, comprising:
When the operational mode of described first indoor set is refrigeration mode, described first indoor set reads the detected pressure value of the described evaporating pressure sensor in described off-premises station; And
When the operational mode of described first indoor set is heating mode, described first indoor set reads the detected pressure value of the described condensing pressure sensor in described off-premises station.
3. method according to claim 1, is characterized in that, calculates the length that described first indoor set accesses the engineering pipe arrangement of described off-premises station comprise according to described detected pressure value and described out temperature:
According to the detected pressure value of described pressure transducer and the out temperature of described heat interchanger, the state value of described first indoor set is calculated by preset formula, wherein, the state value that described first indoor set is corresponding different under multiple different described engineering piping length, described state value enters the evaporating state of described heat interchanger after described engineering pipe arrangement for assessment of refrigerant; And
State value inquiry according to described first indoor set obtains the length that described first indoor set accesses the engineering pipe arrangement of described off-premises station.
4. method according to claim 3, is characterized in that, the state value inquiry according to described first indoor set obtains the length that described first indoor set accesses the engineering pipe arrangement of described off-premises station, comprising:
Described state value is contrasted with the multiple empirical values preset respectively;
Search the empirical value being less than or equal to predetermined threshold value with the difference of described state value, obtain the coupling empirical value corresponding with described first indoor set; And
Confirm that the engineering piping length that described coupling empirical value is corresponding is the length that described first indoor set accesses the described engineering pipe arrangement of described off-premises station.
5. method according to claim 4, it is characterized in that, before being contrasted with the multiple empirical values preset respectively by described state value, described method also comprises: preserve described multiple empirical value and the engineering piping length corresponding with each empirical value by database.
6. method as claimed in any of claims 1 to 5, it is characterized in that, the temperature sensor being arranged on described heat exchanger inlet and outlet comprises: for detecting the first temperature sensor of the inlet temperature of described heat interchanger and the second temperature sensor for the outlet temperature that detects described heat interchanger, wherein, before reading the out temperature of the heat interchanger be arranged in described first indoor set, described method also comprises: confirm that described multiple on-line system operates steadily.
7. the pick-up unit of the engineering piping length of a multiple on-line system, described multiple on-line system comprises: off-premises station, the multiple indoor sets being accessed described off-premises station by engineering pipe arrangement, the heat interchanger be placed in described indoor set, the temperature sensor being arranged on described heat exchanger inlet and outlet and the pressure transducer be placed in described off-premises station, it is characterized in that, described device comprises:
First read module, for reading the detected pressure value of pressure transducer corresponding to described operational mode in off-premises station according to the operational mode of the first indoor set, wherein, described first indoor set is any one indoor set in described multiple on-line system;
Second read module, for reading the out temperature of the heat interchanger be arranged in described first indoor set; And
Computing module, for calculating according to described detected pressure value and described out temperature the length that described first indoor set accesses the engineering pipe arrangement of described off-premises station.
8. device according to claim 7, it is characterized in that, comprise when being placed in the pressure transducer in described off-premises station: when the condensing pressure sensor for detection system condensing pressure and the evaporating pressure sensor for detection system evaporating pressure, described device also comprises:
First reading submodule, for when the operational mode of described first indoor set is refrigeration mode, described first indoor set reads the detected pressure value of the described evaporating pressure sensor in described off-premises station; And
Second reading submodule, when the operational mode of described first indoor set is heating mode, described first indoor set reads the detected pressure value of the described condensing pressure sensor in described off-premises station.
9. device according to claim 7, is characterized in that, described device also comprises:
Calculating sub module, for calculating the state value of described first indoor set according to the detected pressure value of described pressure transducer and the out temperature of described heat interchanger by preset formula, wherein, described state value is the described state value of described first indoor set corresponding under multiple different described engineering piping length, and described state value enters the evaporating state of described heat interchanger after described engineering pipe arrangement for assessment of refrigerant; And
Enquiry module, obtains for the state value inquiry according to described first indoor set the length that described first indoor set accesses the engineering pipe arrangement of described off-premises station.
10. device according to claim 9, is characterized in that, described device also comprises:
Comparing module, for contrasting described state value with the multiple empirical values preset respectively;
Inquiry submodule, for searching the empirical value being less than or equal to predetermined threshold value with the difference of described state value, obtains the coupling empirical value corresponding with described first indoor set; And
First confirms module, for confirming that the engineering piping length that described coupling empirical value is corresponding is the length that described first indoor set accesses the described engineering pipe arrangement of described off-premises station.
11. devices according to claim 10, is characterized in that, described device also comprises:
Preserve module, for being preserved described multiple empirical value and the engineering piping length corresponding with each empirical value by database.
12. according to the device in claim 7 to 11 described in any one, it is characterized in that, the temperature sensor being arranged on described heat exchanger inlet and outlet comprises: for detecting the first temperature sensor of the inlet temperature of described heat interchanger and the second temperature sensor for the outlet temperature that detects described heat interchanger, described device also comprises:
Second confirms module, for confirming that described multiple on-line system operates steadily.
The detection system of the engineering piping length of 13. 1 kinds of multiple on-line system, described multiple on-line system comprises: off-premises station, the multiple indoor sets being accessed described off-premises station by engineering pipe arrangement, the heat interchanger be placed in described indoor set, it is characterized in that, described detection system comprises:
Be arranged on the temperature sensor of described heat exchanger inlet and outlet, for detecting the out temperature of the heat interchanger in the first indoor set, wherein, described first indoor set is any one indoor set in described multiple on-line system;
Be placed in the pressure transducer in described off-premises station, for detecting the detected pressure value corresponding to the operational mode of described first indoor set; And
Processor, is connected with described temperature sensor and described pressure transducer, for calculating according to described detected pressure value and described out temperature the length that described first indoor set accesses the engineering pipe arrangement of described off-premises station.
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