CN111102680A - Automatic refrigerant quantity calibration device and calibration method - Google Patents
Automatic refrigerant quantity calibration device and calibration method Download PDFInfo
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- CN111102680A CN111102680A CN201911262151.3A CN201911262151A CN111102680A CN 111102680 A CN111102680 A CN 111102680A CN 201911262151 A CN201911262151 A CN 201911262151A CN 111102680 A CN111102680 A CN 111102680A
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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
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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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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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
- F24F11/88—Electrical aspects, e.g. circuits
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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Abstract
The invention provides a refrigerant quantity automatic calibration device and a calibration method, which can automatically calibrate the refrigerant quantity of an air conditioner during installation and maintenance, wherein the calibration device supplements the refrigerant to the air conditioner when the refrigerant quantity of the air conditioner is insufficient, and the air conditioner discharges the refrigerant to the calibration device when the refrigerant quantity of the air conditioner is excessive, so that the refrigerant quantity of an air conditioning system is proper, and the air conditioner is ensured to run well; the automatic refrigerant quantity calibration device is used for calibrating the refrigerant quantity of the air conditioner, a stop valve is arranged on a connecting pipeline of an indoor unit and an outdoor unit of the air conditioner, a fluorine injection nozzle is arranged on the stop valve, and the automatic refrigerant quantity calibration device is detachably connected with the fluorine injection nozzle.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an automatic refrigerant quantity calibration device and a calibration method.
Background
The air conditioner system needs a proper amount of refrigerant for good and efficient operation, and the performance and the reliability of the air conditioner unit can be reduced due to inaccurate refrigerant amount.
When the air conditioner is installed and used with a long connecting pipe, the air conditioner system needs more refrigerants and needs to add refrigerants with corresponding weight, the prior art is that manufacturers note the refrigerant adding amount standard of the long connecting pipe in the specification, for example, when the length of the connecting pipe is more than 5m, 50g refrigerants are added every 1m, the refrigerant adding amount is determined when the air conditioner is installed, but the installation environment of the multi-split air conditioner is complex, and the method cannot accurately estimate the refrigerant adding amount of the air conditioner unit.
Sometimes, the air conditioner is maintained after the refrigerant is released due to faults, and the refrigerant is refilled after the maintenance is finished; the air conditioner is moved and needs to be refilled after the refrigerant is discharged; the air conditioner has long running time and may have insufficient refrigerant quantity; when the situations occur, the filling amount of the refrigerant cannot be accurately determined, and the normal operation of the air conditioner is influenced.
Disclosure of Invention
In order to solve the problems, the invention provides a device and a method for automatically calibrating the refrigerant quantity, which can automatically calibrate the refrigerant quantity of an air conditioner during installation and maintenance, wherein the calibrating device supplements the refrigerant to the air conditioner when the refrigerant quantity of the air conditioner is insufficient, and discharges the refrigerant to the calibrating device when the refrigerant quantity of the air conditioner is excessive, so that the refrigerant quantity of an air conditioning system is ensured to be proper, and the air conditioner is ensured to run well.
The invention provides an automatic refrigerant quantity calibration device which is used for calibrating the refrigerant quantity of an air conditioner.
When the air conditioner is installed and maintained, when a refrigerant needs to be filled or calibrated, the refrigerant quantity automatic calibration device is connected with the fluorine injection nozzle of the stop valve of the air conditioner, and is detached after the refrigerant is calibrated, so that the refrigerant quantity automatic calibration device acts on an installation tool for use, and can be repeatedly used.
Further, comprising: the device comprises a first electromagnetic valve, a second electromagnetic valve, a canned refrigerant, a refrigerant storage tank and a pipe joint, wherein the first electromagnetic valve is connected with the canned refrigerant, the second electromagnetic valve is connected with the refrigerant storage tank, the first electromagnetic valve and the second electromagnetic valve are respectively connected with the pipe joint, and the pipe joint is connected with a fluorine injection nozzle of a stop valve through a connecting pipe.
The canned refrigerant is stored with enough refrigerant for supplementing the refrigerant to the air conditioner; the refrigerant storage tank is provided with no refrigerant or a small amount of refrigerant and is used for storing the refrigerant discharged by the air conditioner.
The first valve is arranged between the first electromagnetic valve and the canned refrigerant; the second valve is arranged between the second electromagnetic valve (102) and the refrigerant storage tank.
The first valve can manually control the opening and closing of the canned refrigerant; the second valve can be used for manually controlling the opening and the closing of the refrigerant storage tank.
Further, the refrigerant storage tank further comprises a first throttling device and a second throttling device, wherein the first throttling device is arranged between the first electromagnetic valve and the canned refrigerant, and the second throttling device is arranged between the second electromagnetic valve and the refrigerant storage tank.
The first throttling device and the second throttling device are used for reducing the flowing speed of the refrigerant so as to realize accurate adjustment of the amount of the refrigerant.
Further, the device comprises a calibration device processor and a receiving module, wherein the calibration device processor is respectively connected with the first electromagnetic valve, the second electromagnetic valve and the receiving module.
The calibrating device processor controls the opening and closing of the canned refrigerant by controlling the first electromagnetic valve; the calibration device processor controls the opening and closing of the refrigerant storage tank by controlling the second electromagnetic valve.
The invention also provides a method for automatically calibrating the refrigerant quantity, which is applied to an air conditioner and comprises the following steps:
step S100, connecting the refrigerant quantity automatic calibration device with an air conditioner;
s200, starting the air conditioner and adjusting to a refrigerant quantity automatic calibration mode, wherein the air conditioner runs according to a refrigeration mode, and an internal fan is started to the highest gear;
step S300, detecting an indoor environment temperature T inner ring, an outdoor environment temperature T outer ring and a real-time exhaust temperature TP in real time;
step S400, when detecting that the change value of the real-time exhaust temperature TP continuous time t is less than or equal to a first set value, executing step S500;
s500, searching a target exhaust temperature TP0 according to the T inner ring and the T outer ring, comparing the real-time exhaust temperature TP with the target exhaust temperature TP0, and exiting from a refrigerant quantity automatic calibration mode when TP-1 is more than or equal to TP-TP0 is more than or equal to 1; when TP-TP0 > 1 or TP-TP0 < -1, the air conditioner 200 sends TP and TP0 and operation command to the refrigerant quantity automatic calibration device.
The invention also provides a refrigerant quantity automatic calibration method, which is applied to a refrigerant quantity automatic calibration device and comprises the following steps:
step Z100, connecting the refrigerant quantity automatic calibration device with the air conditioner;
and step Z200, receiving TP, TP0 and an operation instruction sent by the air conditioner, comparing TP with TP0, and controlling the first electromagnetic valve and the second electromagnetic valve to be opened or closed according to a comparison result.
Further, the step Z200 further includes: when TP-TP0 is greater than 1, the first electromagnetic valve is opened, and the second electromagnetic valve is closed; when TP-TP0 < -1, the first solenoid valve is closed and the second solenoid valve is opened.
Further, the step Z200 further includes:
when T1 is not less than TP-TP0, the first electromagnetic valve is opened for a first duration T1 and then closed, and the second electromagnetic valve is closed;
when the T2 is more than or equal to TP-TP0 and less than T1, the first electromagnetic valve is closed after being opened for a second duration T2, and the second electromagnetic valve 102 is closed;
when 1 < TP-TP0 < T2, the first electromagnetic valve is opened for a third duration T3 and then closed, and the second electromagnetic valve 102 is closed.
Further, the step Z200 further includes:
when-T2 is not less than TP-TP0 < -1, the first electromagnetic valve is closed, and the second electromagnetic valve is closed after being opened for a third duration T3;
when-T1 is not less than TP-TP0 < -T2, the first electromagnetic valve is closed, and the second electromagnetic valve is closed after being opened for a second duration T2;
when TP-TP0 < -T1, the first solenoid valve is closed, and the second solenoid valve is opened for a first duration T1 and then closed.
The invention also provides a method for automatically calibrating the refrigerant quantity, which comprises the following steps:
step M100, connecting the refrigerant quantity automatic calibration device with the air conditioner;
step M200, starting the air conditioner and adjusting to a refrigerant quantity automatic calibration mode, wherein the air conditioner operates according to a refrigeration mode, and an internal fan is started to the highest gear;
m300, detecting an indoor environment temperature T inner ring, an outdoor environment temperature T outer ring and a real-time exhaust temperature TP in real time;
step M400, when detecting that the change value of the real-time exhaust temperature TP continuous time t is less than or equal to a first set value, executing step M500;
m500, searching a target exhaust temperature TP0 according to the T inner ring and the T outer ring, comparing the real-time exhaust temperature TP with the target exhaust temperature TP0, and exiting from a refrigerant quantity automatic calibration mode when TP-1 is more than or equal to TP-TP0 is more than or equal to 1; when TP-TP0 > 1 or TP-TP0 < -1, the air conditioner sends TP, TP0 and operation instructions to the refrigerant quantity automatic calibration device;
and M600, the refrigerant quantity automatic calibration device receives TP, TP0 and an operation instruction sent by the air conditioner, compares TP with TP0, and controls the first electromagnetic valve and the second electromagnetic valve to be opened or closed according to a comparison result.
When TP-TP0 > 1, it is indicated that the exhaust temperature is too high, the air conditioner lacks refrigerant, the refrigerant quantity automatic calibration device is needed to supplement refrigerant to the air conditioner, and the opening time of the first electromagnetic valve is controlled according to the difference value between TP and TP0, the larger the difference value is, the larger the refrigerant quantity lacking quantity of the air conditioner is, the larger the refrigerant quantity needed to be supplemented by the air conditioner is, and the longer the opening time of the first electromagnetic valve is.
When TP-TP0 is less than-1, the exhaust temperature is over low, the refrigerant quantity of the air conditioner is excessive, the air conditioner needs to discharge the refrigerant to the refrigerant quantity automatic calibration device, the opening time of the electromagnetic valve is controlled according to the difference value of TP and TP0, the larger the difference value is, the more the refrigerant excess quantity of the air conditioner is, the larger the refrigerant quantity the air conditioner needs to discharge to the refrigerant quantity automatic calibration device is, and the longer the opening time of the second electromagnetic valve is.
Furthermore, T1 and T2 are temperature values, T1 > T2, and the value range of T1 is: 6-10 ℃; the value range of T2 is: 3-7 ℃; t1, t2 and t3 are time values, t1 is more than t2 is more than t3, and the value range of t1 is as follows: 60-100S, the value range of t2 is as follows: 30-70S, wherein the value range of t3 is as follows: 10-30S.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a diagram of the connection between an air conditioner and a refrigerant quantity automatic calibration device;
FIG. 2 is a connection diagram of the air conditioner and the control device of the refrigerant quantity automatic calibration device;
FIG. 3 is a flow chart of a method for automatically calibrating the amount of refrigerant applied to an air conditioner;
FIG. 4 is a first flowchart of a refrigerant quantity automatic calibration method applied to the refrigerant quantity automatic calibration device;
FIG. 5 is a flow chart of a second method for automatically calibrating the refrigerant quantity applied to the apparatus for automatically calibrating the refrigerant quantity;
fig. 6 is a flowchart illustrating a method for automatically calibrating the refrigerant quantity according to embodiment 4.
Description of reference numerals:
100-automatic calibrating device of refrigerant quantity; 101-a first solenoid valve; 102-a second solenoid valve; 103-a first throttling means; 104-a second throttling means; 105-a first valve; 106-a second valve; 107-canning refrigerant; 108-refrigerant storage tank; 109-a pipe joint; 110-connecting pipe; 111-calibrating the device processor; 112-a receiving module; 200-an air conditioner; 201-indoor ambient temperature sensor; 202-outdoor ambient temperature sensor; 203-exhaust gas temperature sensor; 204-a stop valve; 205-indoor unit; 206-an outdoor unit; 207-four-way valve; 208-a compressor; 209-gas-liquid separator; 210-a throttling device; 211-an air conditioner processor; 212-a sending module.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
An automatic refrigerant quantity calibration device 100 is used for calibrating the refrigerant quantity of an air conditioner 200, a stop valve 204 is arranged on a connecting pipeline between an indoor unit 205 and an outdoor unit 206 of the air conditioner 200, a fluorine injection nozzle is arranged on the stop valve 204, the automatic refrigerant quantity calibration device 100 is detachably connected with the fluorine injection nozzle, and when the air conditioner 200 normally operates, the automatic refrigerant quantity calibration device 100 is disconnected with the fluorine injection nozzle; when the air conditioner needs to calibrate the refrigerant quantity, the refrigerant quantity automatic calibration device 100 is connected with the fluorine injection nozzle.
When the air conditioner 200 is installed and maintained and needs to be filled with a refrigerant or the refrigerant is calibrated, the refrigerant quantity automatic calibration device 100 is connected with the fluorine injection nozzle of the stop valve 204 of the air conditioner 200 and is detached after the refrigerant is calibrated, and the refrigerant quantity automatic calibration device 100 is used as an installation tool and can be repeatedly used.
An apparatus 100 for automatically calibrating a refrigerant quantity, comprising: the refrigerant quantity automatic calibration device comprises a first electromagnetic valve 101, a second electromagnetic valve 102, a canned refrigerant 107, a refrigerant storage tank 108 and a pipe joint 109, wherein the first electromagnetic valve 101 is connected with the canned refrigerant 107, the second electromagnetic valve 102 is connected with the refrigerant storage tank 108, the first electromagnetic valve 101 and the second electromagnetic valve 102 are respectively connected with the pipe joint 109, the pipe joint 109 is connected with a fluorine injection nozzle of a stop valve 204 through a connecting pipe 110, so that the refrigerant quantity automatic calibration device 100 is communicated with the air conditioner 200, and the refrigerant can flow between the refrigerant quantity automatic calibration device 100 and the air conditioner 200.
A sufficient amount of refrigerant is stored in the canned refrigerant 107 and used for supplementing the refrigerant to the air conditioner 200; the refrigerant storage tank 108 is used for storing the refrigerant discharged by the air conditioner 200, and has no refrigerant or a small amount of refrigerant;
the refrigerant charging device also comprises a first valve 105 and a second valve 106, wherein the first valve 105 is arranged between the first electromagnetic valve 101 and a canned refrigerant 107; the second valve 106 is disposed between the second solenoid valve 102 and the refrigerant storage tank 108.
The first valve 105 can manually control the opening and closing of the canned refrigerant 107; the second valve 106 can manually control the opening and closing of the refrigerant storage tank 108;
the refrigerant storage tank further comprises a first throttling device 103 and a second throttling device 104, wherein the first throttling device 103 is arranged between the first electromagnetic valve 101 and the canned refrigerant 107, and the second throttling device 104 is arranged between the second electromagnetic valve 102 and the refrigerant storage tank 108.
Preferably, the first throttling means 103 is arranged between the first solenoid valve 101 and the first valve 105, and the second throttling means 104 is arranged between the second solenoid valve 102 and the second valve 106.
The first throttling device 103 and the second throttling device 104 are used for reducing the flowing speed of the refrigerant so as to realize accurate adjustment of the amount of the refrigerant;
the electromagnetic valve calibration device further comprises a calibration device processor 111 and a receiving module 112, wherein the calibration device processor 111 is respectively connected with the first electromagnetic valve 101, the second electromagnetic valve 102 and the receiving module 112.
The calibrating device processor 111 controls the opening and closing of the canned refrigerant 107 by controlling the first electromagnetic valve 101; the calibration device processor 111 controls the second solenoid valve 102 to control the refrigerant storage tank 108 to open and close;
the receiving module 112 is configured to receive the exhaust temperature TP, the target exhaust temperature TP0 and the control instruction sent by the air conditioner 200; the calibration device processor 111 is configured to compare the real-time exhaust temperature TP with the target exhaust temperature TP0, and control the first solenoid valve 101 and the second solenoid valve 102 to open or close according to the comparison result.
Example 2
An automatic refrigerant quantity calibration method is applied to an air conditioner and comprises the following steps:
step S100, the refrigerant quantity automatic calibration device 100 and the air conditioner 200 are connected together.
The pipe joint 109 of the automatic refrigerant quantity calibration device 100 is connected to the fluorine injection nozzle of the air conditioner 200 by the connection pipe 110, and the first valve 105 and the second valve 106 are opened.
And S200, starting the air conditioner, adjusting to an automatic refrigerant quantity calibration mode, operating the air conditioner according to a refrigeration mode, and starting the internal fan to the highest gear.
And S300, detecting the indoor environment temperature T inner ring, the outdoor environment temperature T outer ring and the real-time exhaust temperature TP in real time.
Step S400, when detecting that the change value of the real-time exhaust temperature TP continuous time t is less than or equal to a first set value, executing step S500; t is preferably 2min and the first set point is preferably 1 ℃.
S500, searching a target exhaust temperature TP0 according to the T inner ring and the T outer ring, comparing the real-time exhaust temperature TP with the target exhaust temperature TP0, and exiting from a refrigerant quantity automatic calibration mode when TP-1 is more than or equal to TP-TP0 is more than or equal to 1; when TP-TP0 > 1 or TP-TP0 < -1, the air conditioner 200 sends TP and TP0 and operation command to the refrigerant quantity automatic calibration device 100.
An automatic refrigerant quantity calibration method is applied to an automatic refrigerant quantity calibration device 100 and comprises the following steps:
and step Z100, connecting the refrigerant quantity automatic calibration device 100 and the air conditioner 200 together.
The pipe joint 109 of the automatic refrigerant quantity calibration device 100 is connected to the fluorine injection nozzle of the air conditioner 200 by the connection pipe 110, and the first valve 105 and the second valve 106 are opened.
And step Z200, receiving TP, TP0 and an operation command sent by the air conditioner 200, comparing TP with TP0, and controlling the first electromagnetic valve 101 and the second electromagnetic valve 102 to be opened or closed according to the comparison result.
And step Z210, when TP-TP0 is greater than 1, the first electromagnetic valve 101 is opened, and the second electromagnetic valve 102 is closed.
When TP-TP0 > 1 indicates that the discharge temperature is too high, the air conditioner 200 lacks a refrigerant, the refrigerant quantity automatic calibration device 100 is required to supplement the refrigerant to the air conditioner 200, and the opening time of the first electromagnetic valve 101 is controlled according to the difference value between TP and TP0, wherein the larger the difference value is, the larger the refrigerant quantity deficiency of the air conditioner 200 is, the larger the refrigerant quantity the air conditioner 200 needs to supplement is, and the longer the opening time of the first electromagnetic valve 101 is.
Step Z211, when T1 is not less than TP-TP0, the first electromagnetic valve 101 is opened for a first duration T1 and then is closed;
step Z212, when T2 is not less than TP-TP0 and is less than T1, the first electromagnetic valve 101 is opened for a second duration T2 and then is closed;
step Z213, when the TP-TP0 is more than 1 and less than T2, the first electromagnetic valve 101 is closed after being opened for a third duration T3;
step Z220, when TP-TP0 < -1, the first solenoid valve 101 is closed and the second solenoid valve 102 is opened.
When TP-TP0 is less than-1, it is indicated that the discharge temperature is too low, the refrigerant quantity of the air conditioner 200 is too high, the air conditioner 200 needs to discharge the refrigerant to the refrigerant quantity automatic calibration device 100, and the opening time of the solenoid valve is controlled according to the difference value between TP and TP0, wherein the larger the difference value is, the more the refrigerant excess quantity of the air conditioner 200 is, the larger the refrigerant quantity the air conditioner 200 needs to discharge to the refrigerant quantity automatic calibration device 100 is, and the longer the opening time of the second solenoid valve 102 is.
Step Z221, when the value-T2 is more than or equal to TP-TP0 < -1, the second electromagnetic valve 102 is opened for a third duration T3 and then is closed;
step Z222, when the pressure is-T1 or more and TP-TP0 < -T2, the second electromagnetic valve 102 is opened for a second duration T2 and then is closed;
step Z223, when TP-TP0 < -T1, the second solenoid valve 102 opens for a first duration T1 and closes.
Wherein T1 and T2 are temperature values, T1 is more than T2, and the value range of T1 is as follows: 6-10 ℃; the value range of T2 is: 3-7 ℃; t1, t2 and t3 are time values, t1 is more than t2 is more than t3, and the value range of t1 is as follows: 60-100S, the value range of t2 is as follows: 30-70S, wherein the value range of t3 is as follows: 10-30S.
Example 3
An automatic refrigerant quantity calibration method is applied to an automatic refrigerant quantity calibration device 100 and comprises the following steps:
and step N100, connecting the refrigerant quantity automatic calibration device 100 and the air conditioner 200 together.
The pipe joint 109 of the automatic refrigerant quantity calibration device 100 is connected to the fluorine injection nozzle of the air conditioner 200 by the connection pipe 110, and the first valve 105 and the second valve 106 are opened.
And step N200, receiving TP, TP0 and an operation instruction sent by the air conditioner 200, comparing TP with TP0, and controlling the first electromagnetic valve 101 and the second electromagnetic valve 102 to be opened or closed according to the comparison result.
When TP-TP0 > 1 indicates that the discharge temperature is too high, the air conditioner 200 lacks a refrigerant, the refrigerant quantity automatic calibration device 100 is required to supplement the refrigerant to the air conditioner 200, and the opening time of the first electromagnetic valve 101 is controlled according to the difference value between TP and TP0, wherein the larger the difference value is, the larger the refrigerant quantity deficiency of the air conditioner 200 is, the larger the refrigerant quantity the air conditioner 200 needs to supplement is, and the longer the opening time of the first electromagnetic valve 101 is.
And step N210, when T1 is not less than TP-TP0, the first electromagnetic valve 101 is opened for a first duration time T1 and then closed, and the second electromagnetic valve 102 is closed.
And step N220, when the T2 is more than or equal to TP-TP0 and less than T1, the first electromagnetic valve 101 is closed after being opened for a second duration T2, and the second electromagnetic valve 102 is closed.
And step N230, when the 1 < TP-TP0 < T2, the first electromagnetic valve 101 is closed after being opened for a third duration T3, and the second electromagnetic valve 102 is closed.
When TP-TP0 is less than-1, it is indicated that the discharge temperature is too low, the refrigerant quantity of the air conditioner 200 is too high, the air conditioner 200 needs to discharge the refrigerant to the refrigerant quantity automatic calibration device 100, and the opening time of the solenoid valve is controlled according to the difference value between TP and TP0, wherein the larger the difference value is, the more the refrigerant excess quantity of the air conditioner 200 is, the larger the refrigerant quantity the air conditioner 200 needs to discharge to the refrigerant quantity automatic calibration device 100 is, and the longer the opening time of the second solenoid valve 102 is.
N240, when the pressure is-T2 or more and TP-TP0 < -1, closing the first electromagnetic valve 101, and closing the second electromagnetic valve 102 after opening for a third duration T3;
n250, when the pressure is-T1 or more and TP-TP0 < -T2, closing the first electromagnetic valve 101, and closing the second electromagnetic valve 102 after opening for a second duration T2;
step N260, when TP-TP0 < -T1, the first solenoid valve 101 is closed, and the second solenoid valve 102 is opened for a first duration T1 and then closed.
Wherein T1 and T2 are temperature values, T1 is more than T2, and the value range of T1 is as follows: 6-10 ℃; the value range of T2 is: 3-7 ℃; t1, t2 and t3 are time values, t1 is more than t2 is more than t3, and the value range of t1 is as follows: 60-100S, the value range of t2 is as follows: 30-70S, wherein the value range of t3 is as follows: 10-30S.
Example 4
An automatic refrigerant quantity calibration method comprises the following steps:
and step M100, connecting the refrigerant quantity automatic calibration device 100 and the air conditioner 200 together.
The pipe joint 109 of the automatic refrigerant quantity calibration device 100 is connected to the fluorine injection nozzle of the air conditioner 200 by the connection pipe 110, and the first valve 105 and the second valve 106 are opened.
And step M200, starting the air conditioner and adjusting to a refrigerant quantity automatic calibration mode, wherein the air conditioner operates according to a refrigeration mode, and the internal fan is started to the highest gear.
And M300, detecting the indoor environment temperature T inner ring, the outdoor environment temperature T outer ring and the real-time exhaust temperature TP in real time.
Step M400, when detecting that the change value of the real-time exhaust temperature TP continuous time t is less than or equal to a first set value, executing step M500; t is preferably 2min and the first set point is preferably 1 ℃.
M500, searching a target exhaust temperature TP0 according to the T inner ring and the T outer ring, comparing the real-time exhaust temperature TP with the target exhaust temperature TP0, and exiting from a refrigerant quantity automatic calibration mode when TP-1 is more than or equal to TP-TP0 is more than or equal to 1; when TP-TP0 > 1 or TP-TP0 < -1, the air conditioner 200 sends TP and TP0 and operation command to the refrigerant quantity automatic calibration device 100.
And step M600, the refrigerant quantity automatic calibration device 100 receives TP, TP0 and an operation command sent by the air conditioner 200, compares TP with TP0, and controls the first electromagnetic valve 101 and the second electromagnetic valve 102 to be opened or closed according to a comparison result.
And step M610, when TP-TP0 is greater than 1, the first electromagnetic valve 101 is opened, and the second electromagnetic valve 102 is closed.
When TP-TP0 > 1 indicates that the discharge temperature is too high, the air conditioner 200 lacks a refrigerant, the refrigerant quantity automatic calibration device 100 is required to supplement the refrigerant to the air conditioner 200, and the opening time of the first electromagnetic valve 101 is controlled according to the difference value between TP and TP0, wherein the larger the difference value is, the larger the refrigerant quantity deficiency of the air conditioner 200 is, the larger the refrigerant quantity the air conditioner 200 needs to supplement is, and the longer the opening time of the first electromagnetic valve 101 is.
Step M611, when the T1 is not less than TP-TP0, the first electromagnetic valve 101 is opened for a first duration time T1 and then is closed; the second solenoid valve 102 is closed.
Step M612, when the T2 is more than or equal to TP-TP0 and less than T1, the first electromagnetic valve 101 is opened for a second duration T2 and then closed; the second solenoid valve 102 is closed.
Step M613, when the ratio 1 is more than TP-TP0 and more than T2, the first electromagnetic valve 101 is closed after being opened for a third duration T3; the second solenoid valve 102 is closed.
Step M620, when TP-TP0 < -1, the first solenoid valve 101 is closed and the second solenoid valve 102 is opened.
When TP-TP0 is less than-1, it is indicated that the discharge temperature is too low, the refrigerant quantity of the air conditioner 200 is too high, the air conditioner 200 needs to discharge the refrigerant to the refrigerant quantity automatic calibration device 100, and the opening time of the solenoid valve is controlled according to the difference value between TP and TP0, wherein the larger the difference value is, the more the refrigerant excess quantity of the air conditioner 200 is, the larger the refrigerant quantity the air conditioner 200 needs to discharge to the refrigerant quantity automatic calibration device 100 is, and the longer the opening time of the second solenoid valve 102 is.
Step M621, when the time period-T2 is more than or equal to TP-TP0 < -1, the first electromagnetic valve 101 is closed, and the second electromagnetic valve 102 is opened for a third duration time T3 and then closed;
step M622, when the pressure is equal to or less than-T1 and TP-TP0 < -T2, the first electromagnetic valve 101 is closed, and the second electromagnetic valve 102 is opened for a second duration T2 and then closed;
and step M623, when TP-TP0 < -T1, the first electromagnetic valve 101 is closed, and the second electromagnetic valve 102 is closed after being opened for a first duration T1.
Wherein T1 and T2 are temperature values, T1 is more than T2, and the value range of T1 is as follows: 6-10 ℃; the value range of T2 is: 3-7 ℃; t1, t2 and t3 are time values, t1 is more than t2 is more than t3, and the value range of t1 is as follows: 60-100S, the value range of t2 is as follows: 30-70S, wherein the value range of t3 is as follows: 10-30S.
It is to be understood that the control manner of step N200 in embodiment 3 can also be adopted in step M600.
Of course, those skilled in the art will understand that all or part of the processes in the methods of the above embodiments may be implemented by instructing the control device to perform operations through a computer, and the programs may be stored in a computer-readable storage medium, and when executed, the programs may include the processes of the above method embodiments, where the storage medium may be a memory, a magnetic disk, an optical disk, and the like.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (12)
1. The device is characterized in that the device is used for calibrating the refrigerant quantity of an air conditioner (200), a stop valve (204) is arranged on a connecting pipeline between an indoor unit (205) and an outdoor unit (206) of the air conditioner (200), a fluorine injection nozzle is arranged on the stop valve (204), and the device (100) is detachably connected with the fluorine injection nozzle.
2. The apparatus for automatically calibrating a refrigerant quantity according to claim 1, comprising: first solenoid valve (101), second solenoid valve (102), canning refrigerant (107), refrigerant holding vessel (108), coupling (109), first solenoid valve (101) are connected with canning refrigerant (107), second solenoid valve (102) are connected with refrigerant holding vessel (108), first solenoid valve (101) with second solenoid valve (102) are connected with coupling (109) respectively, coupling (109) pass through connecting pipe (110) with the notes fluorine mouth of stop valve (204) is connected.
3. The device for automatically calibrating the refrigerant quantity according to claim 2, further comprising a first valve (105) and a second valve (106), wherein the first valve (105) is arranged between the first solenoid valve (101) and the canned refrigerant (107); the second valve (106) is disposed between the second solenoid valve (102) and the refrigerant storage tank (108).
4. The device for automatically calibrating the amount of refrigerant according to claim 2, further comprising a first throttling device (103) and a second throttling device (104), wherein the first throttling device (103) is arranged between the first solenoid valve (101) and the refrigerant tank (107), and the second throttling device (104) is arranged between the second solenoid valve (102) and the refrigerant storage tank (108).
5. The device for automatically calibrating the amount of refrigerant according to claim 2, further comprising a calibration device processor (111) and a receiving module (112), wherein the calibration device processor (111) is connected to the first solenoid valve (101), the second solenoid valve (102) and the receiving module (112), respectively.
6. An automatic refrigerant quantity calibration method is applied to an air conditioner and is characterized by comprising the following steps:
step S100, connecting the refrigerant quantity automatic calibration device with an air conditioner;
s200, starting the air conditioner and adjusting to a refrigerant quantity automatic calibration mode, wherein the air conditioner runs according to a refrigeration mode, and an internal fan is started to the highest gear;
step S300, detecting an indoor environment temperature T inner ring, an outdoor environment temperature T outer ring and a real-time exhaust temperature TP in real time;
step S400, when detecting that the change value of the real-time exhaust temperature TP continuous time t is less than or equal to a first set value, executing step S500;
s500, searching a target exhaust temperature TP0 according to the T inner ring and the T outer ring, comparing the real-time exhaust temperature TP with the target exhaust temperature TP0, and exiting from a refrigerant quantity automatic calibration mode when TP-1 is more than or equal to TP-TP0 is more than or equal to 1; when TP-TP0 > 1 or TP-TP0 < -1, the air conditioner 200 sends TP and TP0 and operation command to the refrigerant quantity automatic calibration device.
7. An automatic refrigerant quantity calibration method is applied to an automatic refrigerant quantity calibration device and is characterized by comprising the following steps:
step Z100, connecting the refrigerant quantity automatic calibration device with the air conditioner;
and step Z200, receiving TP, TP0 and an operation instruction sent by the air conditioner, comparing TP with TP0, and controlling the first electromagnetic valve and the second electromagnetic valve to be opened or closed according to a comparison result.
8. The method as claimed in claim 7, wherein the step Z200 further comprises:
when TP-TP0 is greater than 1, the first electromagnetic valve is opened, and the second electromagnetic valve is closed;
when TP-TP0 < -1, the first solenoid valve is closed and the second solenoid valve is opened.
9. The method as claimed in claim 7, wherein the step Z200 further comprises:
when T1 is not less than TP-TP0, the first electromagnetic valve is opened for a first duration T1 and then closed, and the second electromagnetic valve is closed;
when the T2 is more than or equal to TP-TP0 and less than T1, the first electromagnetic valve is closed after being opened for a second duration T2, and the second electromagnetic valve 102 is closed;
when 1 < TP-TP0 < T2, the first electromagnetic valve is opened for a third duration T3 and then closed, and the second electromagnetic valve 102 is closed.
10. The method as claimed in claim 7, wherein the step Z200 further comprises:
when-T2 is not less than TP-TP0 < -1, the first electromagnetic valve is closed, and the second electromagnetic valve is closed after being opened for a third duration T3;
when-T1 is not less than TP-TP0 < -T2, the first electromagnetic valve is closed, and the second electromagnetic valve is closed after being opened for a second duration T2;
when TP-TP0 < -T1, the first solenoid valve is closed, and the second solenoid valve is opened for a first duration T1 and then closed.
11. An automatic refrigerant quantity calibration method is characterized by comprising the following steps:
step M100, connecting the refrigerant quantity automatic calibration device with the air conditioner;
step M200, starting the air conditioner and adjusting to a refrigerant quantity automatic calibration mode, wherein the air conditioner operates according to a refrigeration mode, and an internal fan is started to the highest gear;
m300, detecting an indoor environment temperature T inner ring, an outdoor environment temperature T outer ring and a real-time exhaust temperature TP in real time;
step M400, when detecting that the change value of the real-time exhaust temperature TP continuous time t is less than or equal to a first set value, executing step M500;
m500, searching a target exhaust temperature TP0 according to the T inner ring and the T outer ring, comparing the real-time exhaust temperature TP with the target exhaust temperature TP0, and exiting from a refrigerant quantity automatic calibration mode when TP-1 is more than or equal to TP-TP0 is more than or equal to 1; when TP-TP0 > 1 or TP-TP0 < -1, the air conditioner sends TP, TP0 and operation instructions to the refrigerant quantity automatic calibration device;
and M600, the refrigerant quantity automatic calibration device receives TP, TP0 and an operation instruction sent by the air conditioner, compares TP with TP0, and controls the first electromagnetic valve and the second electromagnetic valve to be opened or closed according to a comparison result.
12. The apparatus according to any one of claims 9-11, wherein T1 and T2 are temperature values, T1 > T2, and T1 has a value range of: 6-10 ℃; the value range of T2 is: 3-7 ℃; t1, t2 and t3 are time values, t1 is more than t2 is more than t3, and the value range of t1 is as follows: 60-100S, the value range of t2 is as follows: 30-70S, wherein the value range of t3 is as follows: 10-30S.
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| CN202747484U (en) * | 2012-09-14 | 2013-02-20 | 珠海格力电器股份有限公司 | Air conditioner |
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Application publication date: 20200505 |