CN108662730A - The guard system of refrigeration equipment and guard method for compressor safe operation - Google Patents
The guard system of refrigeration equipment and guard method for compressor safe operation Download PDFInfo
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- CN108662730A CN108662730A CN201810292056.7A CN201810292056A CN108662730A CN 108662730 A CN108662730 A CN 108662730A CN 201810292056 A CN201810292056 A CN 201810292056A CN 108662730 A CN108662730 A CN 108662730A
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- compressor
- temperature
- preset
- real time
- time data
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Classifications
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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
- F24F11/85—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 variable-flow pumps
-
- 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
-
- 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
- F24F11/89—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/005—Arrangement or mounting of control or safety devices of safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/025—Motor control arrangements
-
- 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
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/19—Calculation of parameters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/024—Compressor control by controlling the electric parameters, e.g. current or voltage
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/025—Compressor control by controlling speed
- F25B2600/0251—Compressor control by controlling speed with on-off operation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2115—Temperatures of a compressor or the drive means therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2115—Temperatures of a compressor or the drive means therefor
- F25B2700/21153—Temperatures of a compressor or the drive means therefor of electronic components
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2116—Temperatures of a condenser
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2116—Temperatures of a condenser
- F25B2700/21162—Temperatures of a condenser of the refrigerant at the inlet of the condenser
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2116—Temperatures of a condenser
- F25B2700/21163—Temperatures of a condenser of the refrigerant at the outlet of the condenser
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The refrigeration cycle of guard method the invention discloses a kind of guard system of refrigeration equipment and for compressor safe operation, the refrigeration equipment includes compressor, condenser, throttling unit and evaporator, which is characterized in that the guard system includes：Measurement module, the measurement module are used to measure the real time data of the refrigeration cycle；Data acquisition module, the data acquisition module are electrically connected with the measurement module, the real time data measured for acquiring the measurement module；Control module, the control module are electrically connected with the data acquisition module, and with the compression mechatronics；Wherein, the control module is set as controlling the energization or power-off of the compressor according to the real time data of the data collecting module collected.The guard system of the refrigeration equipment of the present invention can effectively monitor the high temperature demagnetization risk or air operation risk of explosion of compressor, and the versatility of the system is high, low using difficulty, with strong points, reaction speed is fast, and at low cost.
Description
Technical field
The invention belongs to compressor manufacturing technical fields, in particular to the guard system and use of a kind of refrigeration equipment
In the guard method of compressor safe operation.
Background technology
As domestic and international domestic air conditioning Energy Efficiency Standard is constantly promoted, personal energy conservation and environmental awareness persistently enhance, domestic air conditioning
In market, the usage amount of frequency-changeable compressor increases comparatively fast in recent years, but frequency-changeable compressor high temperature demagnetization high failure rate becomes restriction
The key factor that frequency-changeable compressor is promoted.In the implementation of the present invention, inventor has found, compressor high temperature demagnetization master
If since air-conditioning high-pressure flow line blocks, and compressor continuous service, the suction and discharge pressure ratio and higher suction temperature of superelevation,
Lead to the remote supermagnet normal working temperature of pump housing delivery temperature, causes rotor loss of excitation, final compressor failure.
Meanwhile in refrigeration equipment operational process, also it will appear once in a while because air-conditioning system high-pressure side blocks, low-pressure side is let out
Leakage, compressor continuous service and from low-pressure side suck air, then cause compressor air operation explosion accident.Its mechanism and
Internal combustion engine is similar, and when air is constantly inhaled into, compresses, crosses thermal exhaust, compressor and freeze machine oil gasifies to form oil and gas mixture.When
Temperature, pressure reach certain condition, refrigerator oil spontaneous combustion, explosion！Such accident can lead to casualties, property loss.
Invention content
The present invention is directed at least solve one of the technical problems existing in the prior art.For this purpose, the present invention proposes a kind of system
The guard system of the guard system of cool equipment, the refrigeration equipment can effectively monitor the high temperature demagnetization risk or sky of compressor
Fate row risk of explosion.
The guard system of refrigeration equipment according to the ... of the embodiment of the present invention, including compressor, condenser, throttling unit and evaporation
Device, which is characterized in that the guard system includes：Measurement module, the measurement module are used to measure the reality of the refrigeration cycle
When data；Data acquisition module, the data acquisition module are electrically connected with the measurement module, for acquiring the measurement module
The real time data of measurement；Control module, the control module are electrically connected with the data acquisition module, and electromechanical with the compression
Connection；Wherein, the control module is set as controlling the compressor according to the real time data of the data collecting module collected
Energization or power-off.
The guard system of refrigeration equipment according to the ... of the embodiment of the present invention can effectively monitor the high temperature demagnetization wind of compressor
Danger or air run risk of explosion, and the versatility of the system is high, low using difficulty, with strong points, reaction speed is fast, and cost
It is low.
The guard system of refrigeration equipment according to an embodiment of the invention, the measurement module include：Duty parameter is surveyed
Component is measured, the duty parameter measuring part is used to measure the entrance temperature of the case temperature Tc of the compressor, the condenser
Spend the condensation temperature Tcond of Td, the condenser；Electric parameter measurement component, the electric parameter measurement component are described for measuring
The operating current I of compressor.
The guard system of refrigeration equipment according to an embodiment of the invention, the duty parameter measuring part include：The
One temperature meter, the case temperature Tc for detecting the compressor；Second temperature measuring appliance, for measuring the condenser
Inlet temperature Td；Third temperature meter, the condensation temperature Tcond for measuring the condenser.
The guard system of refrigeration equipment according to an embodiment of the invention, the control module are arranged to, as Tc ＞
When Tcmax, the control module controls the compressor power-off, wherein Tcmax is on the case temperature of the compressor is default
Limit value.
The guard system of refrigeration equipment according to an embodiment of the invention, the control module are arranged to, as Tc ＞
Tcmax, Dv≤Dvmin, and when Imin≤I≤Imax, the control module control the compressor power-off, wherein Tcmax is
The preset upper limit value of the case temperature of the compressor, Dv=Td-Tc, Dvmin be the condenser inlet temperature with it is described
The preset difference value lower limiting value of the case temperature of compressor, Imin are the preset lower limit value of the operating current of the compressor, Imax
For the preset upper limit value of the operating current of the compressor.
The guard system of refrigeration equipment according to an embodiment of the invention, the control module are arranged to, as Tc ＞
Tcmax, Dv≤Dvmin, Tcond≤Tcondmax, Δ Tcond≤Δ Tcondmin, and when Imin≤I≤Imax, the control
Molding block controls the compressor power-off, wherein Tcmax is the preset upper limit value of the case temperature of the compressor, Dv=Td-
Tc, Dvmin are the preset difference value lower limiting value of the inlet temperature of the condenser and the case temperature of the compressor, and Imin is institute
The preset lower limit value of the operating current of compressor is stated, Imax is the preset upper limit value of the operating current of the compressor,
Tcondmax is the preset upper limit value of the condensation temperature of the condenser, and Δ Tcond is the change rate of the condensation temperature, Δ
Tcondmin is the preset lower limit value of the change rate of the condensation temperature.
The guard system of refrigeration equipment according to an embodiment of the invention, the control module include：Computing unit is posted
Memory cell, comparing unit, output unit；Wherein, the deposit unit and the data acquisition unit, the computing unit, institute
Comparing unit electrical connection is stated, the computing unit is electrically connected with comparing unit, and the output unit is electrically connected with the comparing unit
It connects；The computing unit is used to calculate result of calculation according to the real time data and preset calculating function；The deposit
Comparison result of the unit for depositing parameter preset, the real time data, the result of calculation, the comparing unit；The ratio
Compared with unit for the parameter preset, the real-time parameter and the result of calculation to obtain comparison result；It is described defeated
Go out unit to be suitable for being electrically connected with the switch of the compressor or the refrigeration equipment, for according to described in comparison result control
The energization or power-off of compressor.
The guard system of refrigeration equipment according to an embodiment of the invention further includes：Alarm, the alarm and institute
State control module electrical connection.
The invention also provides a kind of guard methods for compressor safe operation, include the following steps：Setting refrigeration
The parameter preset of equipment safety operation；Measure the real time data under the refrigeration equipment operating status；By the real time data or
According to the calculated calculated value of the real time data compared with the parameter preset, and control instruction is exported according to comparison result,
The control instruction includes control compressor power-off.
Guard method according to an embodiment of the invention for compressor safe operation, the parameter preset include institute
State the case temperature preset upper limit value Tcmax of compressor, the real time data includes the case temperature Tc of the compressor, described
Step by the real time data or according to the calculated calculated value of the real time data compared with the parameter preset, and according to than
Relatively result exports control instruction：As Tc ＞ Tcmax, the control module controls the compressor power-off.
Guard method according to an embodiment of the invention for compressor safe operation, the parameter preset include institute
State the case temperature preset upper limit value Tcmax of compressor, the inlet temperature and the compressor of the condenser case temperature
Preset difference value lower limiting value Dvmin, the preset lower limit value Imin of operating current of the compressor, the compressor work electricity
The preset upper limit value Imax of stream, the real time data include the case temperature Tc of the compressor and the entrance temperature of the condenser
Spend Td, include Dv, Dv=Td-Tc according to the calculated calculated value of the real time data, the step by the real time data or
According to the calculated calculated value of the real time data compared with the parameter preset, and control instruction packet is exported according to comparison result
It includes：As Tc ＞ Tcmax, Dv≤Dvmin, and Imin≤I≤Imax, the control module controls the compressor power-off.
Guard method according to an embodiment of the invention for compressor safe operation, the parameter preset include institute
State the case temperature preset upper limit value Tcmax of compressor, the inlet temperature and the compressor of the condenser case temperature
Preset difference value lower limiting value Dvmin, the preset lower limit value Imin of operating current of the compressor, the compressor work electricity
The preset upper limit value Imax of stream, the condensation temperature of the condenser preset upper limit value Tcondmax, the condensation temperature change
The preset lower limit value Δ Tcondmin of rate, the real time data include the case temperature Tc of the compressor and the condenser
Inlet temperature Td, include Dv and the change rate Δ of the condensation temperature according to the calculated calculated value of the real time data
Tcond, Dv=Td-Tc, the step by the real time data or according to the calculated calculated value of the real time data with it is described
Parameter preset compares, and exports control instruction according to comparison result and include：When Tc ＞ Tcmax, Dv≤Dvmin, Tcond≤
Tcondmax, Δ Tcond≤Δ Tcondmin, and when Imin≤I≤Imax, it is disconnected that the control module controls the compressor
Electricity.
The guard system of the guard method for compressor safe operation and above-mentioned refrigeration equipment is relative to existing
Advantage possessed by technology is identical, and details are not described herein.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obviously, or practice through the invention is recognized.
Description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination following accompanying drawings to embodiment
Obviously and it is readily appreciated that, wherein：
Fig. 1 is the structural schematic diagram of guard system according to the ... of the embodiment of the present invention；
Fig. 2 and Fig. 3 is the data transmission schematic diagram in guard system according to the ... of the embodiment of the present invention；
Fig. 4-Fig. 6 is the flow chart of the guard method according to the ... of the embodiment of the present invention for compressor safe operation.
Reference numeral：
Compressor 10, condenser 20, throttling unit 30, evaporator 40,
Measurement module 100, the first temperature meter 110, second temperature measuring appliance 120, third temperature meter 130, electricity
Parameter measurement device 140,
Data acquisition module 200,
Control module 300, computing unit 310, deposit unit 320, comparing unit 330, output unit 340,
Alarm 410, switch 420, power supply 430.
Specific implementation mode
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and is only used for explaining the present invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term "center", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on ... shown in the drawings or
Position relationship is merely for convenience of description of the present invention and simplification of the description, and does not indicate or imply the indicated device or element must
There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.In addition, limit
There is the feature of " first ", " second " to can explicitly or implicitly include one or more this feature surely.The present invention's
In description, unless otherwise indicated, the meaning of " plurality " is two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be electrical connection to be mechanical connection；It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
The guard system of refrigeration equipment according to the ... of the embodiment of the present invention is described below with reference to Fig. 1-Fig. 3.Refrigeration equipment can be with
For equipment such as air-conditionings.
As shown in Figure 1, the refrigeration cycle of refrigeration equipment includes compressor 10, condenser 20, throttling unit 30 and evaporator
40, the exhaust outlet of compressor 10 is connected with the entrance of condenser 20 by pipeline, and the outlet of condenser 20 passes through pipeline and evaporation
The entrance of device 40 is connected, and throttling unit 30 is equipped between the outlet and the entrance of evaporator 40 of condenser 20, evaporator 40
Outlet is connected with the air entry of compressor 10 by pipeline, and compressor 10 is connected with power supply 430, and compressor 10 and power supply 430
Between be equipped with switch 420.
As shown in Figure 1-Figure 3, the guard system of refrigeration equipment according to an embodiment of the invention includes：Measurement module
100, data acquisition module 200, control module 300.
Wherein, measurement module 100 is used to measure the real time data of refrigeration cycle, which may include refrigeration cycle
In at least partly device operating temperature in refrigeration cycle everywhere of temperature or refrigerant, data acquisition module 200 with survey
It measures module 100 to be electrically connected, data acquisition module 200 is used to acquire the real time data of the measurement of measurement module 100, control module 300
It is electrically connected with data acquisition module 200, data acquisition module 200 gives the real-time Data Transmission of the refrigeration cycle of acquisition to control mould
Block 300, control module 300 are electrically connected with compressor 10, what control module 300 was set as being acquired according to data acquisition module 200
Real time data controls the energization or power-off of compressor 10.
That is, operational data of the guard system of the refrigeration equipment of the embodiment of the present invention by monitoring refrigeration equipment,
Judge that compressor 10 with the presence or absence of the risk of high temperature demagnetization or air operation explosion, finds risk point in advance by the data,
And power down process is made to compressor 10, the safety in operation of refrigeration equipment can be improved.
The guard system of refrigeration equipment according to the ... of the embodiment of the present invention can effectively monitor the high temperature demagnetization of compressor 10
Risk or air run risk of explosion, and the versatility of the system is high, low using difficulty, with strong points, reaction speed is fast, and cost
It is low.
As shown in Figures 2 and 3, measurement module 100 includes：Duty parameter measuring part and electric parameter measurement component 140.
Wherein, duty parameter measuring part is used to measure the inlet temperature of the case temperature Tc of compressor 10, condenser 20
The condensation temperature Tcond of Td, condenser 20, the inlet temperature Td of condenser 20 are approximately equal to the delivery temperature of compressor 10, condensation
The condensation temperature Tcond of device 20 is the condensation temperature of refrigeration equipment freeze cycle, can be with the middle portion temperature of condenser 20 come table
Sign.
Duty parameter measuring part may include：First temperature meter 110, second temperature measuring appliance 120, third temperature
Measuring appliance 130.
First temperature meter 110 is used to detect the case temperature Tc of compressor 10, for example the first temperature meter 110 is
Thermal resistance sensor, and the first temperature meter 110 is installed on the upper shell of compressor 10.
Second temperature measuring appliance 120 is used to measure the inlet temperature Td of condenser 20, for example second temperature measuring appliance 120 can
Think thermocouple sensor, and second temperature measuring appliance 120 is pasted on connection middle part of 10 exhaust pipe of compressor with condenser 20,
Specifically, first U that connecting tube after 10 exhaust pipe of compressor can be pasted on to the refrigeration equipment of Mr. Yu's model is curved, passes through pressure
The inlet temperature Td of the middle portion temperature characterization condenser 20 of connecting tube, can simplify condenser 20 between contracting machine 10 and condenser 20
Inlet temperature Td measurement.
Third temperature meter 130 is used to measure the condensation temperature Tcond of condenser 20, such as third temperature meter
130 be thermal resistance sensor, and third temperature meter 130 is pasted on the middle part of condenser 20, specifically, to Mr. Yu's model
Refrigeration equipment third temperature meter 130 is pasted on the first of condenser 20, and to ranked fifth U curved.
Electric parameter measurement component 140 is used to measure the operating current I of compressor 10, and electric parameter measurement component 140 includes：Suddenly
That sensor, for measuring the R phase currents for measuring compressor 10.
As shown in Figures 2 and 3, control module 300 includes：It is computing unit 310, deposit unit 320, comparing unit 330, defeated
Go out unit 340.
Deposit unit 320 is electrically connected with data acquisition unit, computing unit 310, comparing unit 330, computing unit 310 with
Comparing unit 330 is electrically connected, and output unit 340 is electrically connected with comparing unit 330, and computing unit 310 is used for according to real time data
And preset calculating function calculates result of calculation, deposit unit 320 is for depositing parameter preset, real time data, calculating knot
Fruit, comparing unit 330 comparison result, comparing unit 330 for compare parameter preset, real-time parameter and result of calculation with
Go out comparison result, output unit 340 is suitable for be electrically connected with the switch 420 of compressor 10 or refrigeration equipment, for tying according to comparing
Fruit controls the energization or power-off of compressor 10.
With reference to figure 3, the guard system of refrigeration equipment can also include：Alarm 410, alarm 410 and control module 300
Electrical connection, specifically, alarm 410 is electrically connected with output unit 340, and judging compressor 10 in comparison result, there are high temperature to move back
Magnetic or the risk of air operation explosion, output unit 340 output signal to alarm 410.
In some embodiments, control module 300 is arranged to, and as Tc ＞ Tcmax, control module 300 controls compressor
10 power-off, wherein Tcmax is the case temperature preset upper limit value of compressor 10, and Tcmax can be previously written control module 300.
It is understood that then can determine whether compressor 10 as Tc ＞ Tcmax, there are internal high temperature risk, the control reports of control module 300
Alert device 410 sends out alarm signal and controls the power supply that switch 420 cuts off compressor 10.
In further embodiments, control module 300 is arranged to, when Tc ＞ Tcmax, Dv≤Dvmin, and Imin≤I≤
When Imax, control module 300 controls compressor 10 and powers off, wherein Tcmax is the preset upper limit of the case temperature of compressor 10
Value, Dv=Td-Tc, Dvmin are the preset difference value lower limiting value of the inlet temperature of condenser 20 and the case temperature of compressor 10,
Imin is the preset lower limit value of the operating current of compressor 10, and Imax is the preset upper limit value of the operating current of compressor 10,
Tcmax, Dvmin, Imin, Imax can be previously written control module 300.It is understood that when above-mentioned condition meets simultaneously
When, then system is can determine whether there are the risk that high-pressure side blocks, and control module 300 controls alarm 410 and sends out alarm signal and control
Make the power supply that switch 420 cuts off compressor 10.It should be noted that if I is unsatisfactory for Imin≤I≤Imax, then may be other
Failure.
Control module 300 is arranged in yet other embodiments, when Tc ＞ Tcmax, Dv≤Dvmin, Tcond≤
Tcondmax, Δ Tcond≤Δ Tcondmin, and when Imin≤I≤Imax, control module 300 controls compressor 10 and powers off,
In, Tcmax is the preset upper limit value of the case temperature of compressor 10, and Dv=Td-Tc, Dvmin are the inlet temperature of condenser 20
With the preset difference value lower limiting value of the case temperature of compressor 10, Imin is the preset lower limit value of the operating current of compressor 10,
Imax is the preset upper limit value of the operating current of compressor 10, and Tcondmax is the preset upper limit of the condensation temperature of condenser 20
Value, Δ Tcond be condensation temperature change rate, Δ Tcondmin be condensation temperature change rate preset lower limit value, Tcmax,
Tcondmax, Dvmin, Δ Tcondmin, Imin, Imax can be previously written control module 300.It is understood that when upper
When stating condition while meeting, can determine whether compressor 10, there are the risk of high temperature demagnetization or air operation, the control reports of control module 300
Alert device 410 sends out alarm signal and controls the power supply that switch 420 cuts off compressor 10.It should be noted that if I is unsatisfactory for Imin
≤ I≤Imax may be then other failures.
The invention also discloses a kind of guard method for 10 safe operation of compressor, the embodiment of the present invention is used to press
The guard method of 10 safe operation of contracting machine can use the guard system of the refrigeration equipment of above-described embodiment to realize.
As shown in Figure 4-Figure 6, the guard method according to the ... of the embodiment of the present invention for 10 safe operation of compressor includes such as
Lower step：Set the parameter preset of refrigeration equipment safe operation；Measure the real time data under refrigeration equipment operating status；It will be real-time
Data export control instruction, control according to the calculated calculated value of real time data compared with parameter preset, and according to comparison result
System instruction includes that control compressor 10 powers off.
In some embodiments, parameter preset includes the case temperature preset upper limit value Tcmax of compressor 10, real time data
Case temperature Tc including compressor 10, step is by real time data or according to the calculated calculated value of real time data and parameter preset
Compare, and control instruction is exported according to comparison result and includes：As Tc ＞ Tcmax, it is disconnected that control module 300 controls compressor 10
Electricity.It is understood that then can determine whether compressor 10 as Tc ＞ Tcmax there are internal high temperature risk, control module 300 controls
Alarm 410 sends out alarm signal and controls the power supply that switch 420 cuts off compressor 10.
In further embodiments, parameter preset includes case temperature preset upper limit value Tcmax, the condenser of compressor 10
20 inlet temperature and the preset difference value lower limiting value Dvmin of the case temperature of compressor 10, the operating current of compressor 10 it is pre-
Set limit value Imin, compressor 10 operating current preset upper limit value Imax, real time data includes the shell temperature of compressor 10
The inlet temperature Td for spending Tc and condenser 20 includes Dv according to the calculated calculated value of real time data, and Dv=Td-Tc, step will
Real time data exports control instruction according to the calculated calculated value of real time data compared with parameter preset, and according to comparison result
Including：As Tc ＞ Tcmax, Dv≤Dvmin, and Imin≤I≤Imax, control module 300 controls compressor 10 and powers off.It can be with
Understand, when above-mentioned condition meets simultaneously, then can determine whether system there are the risk that high-pressure side blocks, control module 300 is controlled
Alarm 410 processed sends out alarm signal and controls the power supply that switch 420 cuts off compressor 10.It should be noted that if I is unsatisfactory for
Imin≤I≤Imax may be then other failures.
Parameter preset includes case temperature preset upper limit value Tcmax, the condenser of compressor 10 in yet other embodiments,
20 inlet temperature and the preset difference value lower limiting value Dvmin of the case temperature of compressor 10, the operating current of compressor 10 it is pre-
Set the preset upper limit of the condensation temperature of limit value Imin, the preset upper limit value Imax of operating current of compressor 10, condenser 20
Value Tcondmax, condensation temperature change rate preset lower limit value Δ Tcondmin, real time data includes the shell of compressor 10
The inlet temperature Td of temperature Tc and condenser 20 include the variation of Dv and condensation temperature according to the calculated calculated value of real time data
Rate Δ Tcond, Dv=Td-Tc, step by real time data or according to the calculated calculated value of real time data compared with parameter preset,
And control instruction is exported according to comparison result and includes：As Tc ＞ Tcmax, Dv≤Dvmin, Tcond≤Tcondmax, Δ Tcond
≤ Δ Tcondmin, and when Imin≤I≤Imax, control module 300 controls compressor 10 and powers off.It is understood that when upper
When stating condition while meeting, can determine whether compressor 10, there are the risk of high temperature demagnetization or air operation, the control reports of control module 300
Alert device 410 sends out alarm signal and controls the power supply that switch 420 cuts off compressor 10.It should be noted that if I is unsatisfactory for Imin
≤ I≤Imax may be then other failures.
In yet other embodiments, with reference to figure 5, the protection according to the ... of the embodiment of the present invention for 10 safe operation of compressor
Method includes the following steps：
S1：Guard system for 10 safe operation of compressor is mounted in refrigeration equipment, the pre- of safe operation is written
Setting parameter；S2：It measures and acquires real-time working condition parameter and electrical parameter under refrigeration equipment operating status；S3：According to certain logic
Calculation processing is carried out to the duty parameter and the electrical parameter；S4：The duty parameter, electrical parameter and calculation processing knot
Fruit is compared with the parameter preset, judges and exports control.
With reference to figure 6, the guard method according to the ... of the embodiment of the present invention for 10 safe operation of compressor includes the following steps：
S101：Guard system for 10 safe operation of compressor is mounted in refrigeration equipment；
S102：Preset in control module 300 case temperature upper limit value Tcmax, condensation temperature unit interval change rate
The difference lower limiting value Dvmin of the case temperature of lower limiting value Δ Tcondmin, the inlet temperature of condenser 20 and the compressor 10,
The running current upper limit Imax of compressor 10, the running current lower limit Imin of compressor 10 and condensation temperature it is upper
Limit value Tcondmax；S103：Measure and acquire the inlet temperature of the case temperature Tc under refrigeration equipment operating status, condenser 20
Td, refrigeration equipment condensation temperature Tcond and compressor 10 operating current I；S104：The unit interval for calculating condensation temperature becomes
The difference Dv of rate Δ Tcond and 20 inlet temperature of condenser and 10 case temperature of the compressor；S105：Relatively following ginseng
Number can determine whether the compressor 10 there are internal high temperature risk, output alarm signal is controlled with switch 420 if Tc ＞ Tcmax
Action；S106：Compare following parameter, if Tc ＞ Tcmax, Dv≤Dvmin, Imin≤I≤Imax meet simultaneously, then can determine whether institute
Stating system, there are the risk that high-pressure side blocks, output alarm signal and 420 control actions of switch；S107：Compare following parameter, if
Tc ＞ Tcmax, Dv≤Dvmin, Tcond≤Tcondmax, Δ Tcond≤Δ Tcondmin, and Imin≤I≤Imax is full simultaneously
Foot then can determine whether the compressor 10 there are the risk of high temperature demagnetization or air operation, and output alarm signal is controlled with switch 420
Action.
To sum up, according to the guard method proposed by the present invention for 10 safe operation of compressor, by measuring, acquiring system
After the duty parameter and electrical parameter of cool equipment carry out certain logic calculating, it is compared, judges with parameter preset, final output report
Alert signal and with 430 control action of power supply, to avoid compressor 10 from high temperature demagnetization and air operation explosion occur.This method is patrolled
It is volume clear, versatility is high, with strong points, and will not be with the control logic contradiction of existing common refrigeration equipment.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means specific features described in conjunction with this embodiment or example, knot
Structure, material or feature are included at least one embodiment or example of the invention.In the present specification, to above-mentioned term
Schematic representation may not refer to the same embodiment or example.Moreover, specific features, structure, material or the spy of description
Point can be combined in any suitable manner in any one or more of the embodiments or examples.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
In the case of being detached from the principle of the present invention and objective a variety of change, modification, replacement and modification can be carried out to these embodiments, this
The range of invention is limited by claim and its equivalent.
Claims (12)
1. the refrigeration cycle of a kind of guard system of refrigeration equipment, the refrigeration equipment includes compressor, condenser, throttling unit
And evaporator, which is characterized in that the guard system includes：
Measurement module, the measurement module are used to measure the real time data of the refrigeration cycle；
Data acquisition module, the data acquisition module are electrically connected with the measurement module, are surveyed for acquiring the measurement module
The real time data of amount；
Control module, the control module are electrically connected with the data acquisition module, and with the compression mechatronics；Wherein,
The control module is set as controlling the energization of the compressor according to the real time data of the data collecting module collected
Or power-off.
2. the guard system of refrigeration equipment according to claim 1, which is characterized in that the measurement module includes：
Duty parameter measuring part, the duty parameter measuring part are used to measure the case temperature Tc, described of the compressor
The inlet temperature Td of condenser, the condensation temperature Tcond of the condenser；
Electric parameter measurement component, the electric parameter measurement component are used to measure the operating current I of the compressor.
3. the guard system of refrigeration equipment according to claim 2, which is characterized in that the duty parameter measuring part packet
It includes：
First temperature meter, the case temperature Tc for detecting the compressor；
Second temperature measuring appliance, the inlet temperature Td for measuring the condenser；
Third temperature meter, the condensation temperature Tcond for measuring the condenser.
4. the guard system of refrigeration equipment according to claim 2, which is characterized in that the control module is arranged to, when
When Tc ＞ Tcmax, the control module controls the compressor power-off, wherein Tcmax is that the case temperature of the compressor is pre-
If upper limit value.
5. the guard system of refrigeration equipment according to claim 2, which is characterized in that the control module is arranged to, when
When Tc ＞ Tcmax, Dv≤Dvmin, and Imin≤I≤Imax, the control module controls the compressor power-off, wherein
Tcmax is the preset upper limit value of the case temperature of the compressor, and Dv=Td-Tc, Dvmin are the inlet temperature of the condenser
With the preset difference value lower limiting value of the case temperature of the compressor, Imin is the pre-determined lower limit of the operating current of the compressor
Value, Imax are the preset upper limit value of the operating current of the compressor.
6. the guard system of refrigeration equipment according to claim 2, which is characterized in that the control module is arranged to, when
Tc ＞ Tcmax, Dv≤Dvmin, Tcond≤Tcondmax, Δ Tcond≤Δ Tcondmin, and when Imin≤I≤Imax, institute
It states control module and controls the compressor power-off, wherein Tcmax is the preset upper limit value of the case temperature of the compressor, Dv
=Td-Tc, Dvmin are the preset difference value lower limiting value of the inlet temperature of the condenser and the case temperature of the compressor,
Imin is the preset lower limit value of the operating current of the compressor, and Imax is the preset upper limit of the operating current of the compressor
Value, Tcondmax are the preset upper limit value of the condensation temperature of the condenser, and Δ Tcond is the change rate of the condensation temperature,
Δ Tcondmin is the preset lower limit value of the change rate of the condensation temperature.
7. the guard system of the refrigeration equipment according to any one of claim 1-6, which is characterized in that the control module
Including：Computing unit, deposit unit, comparing unit, output unit；Wherein,
The deposit unit is electrically connected with the data acquisition unit, the computing unit, the comparing unit, and the calculating is single
Member is electrically connected with comparing unit, and the output unit is electrically connected with the comparing unit；
The computing unit is used to calculate result of calculation according to the real time data and preset calculating function；
The deposit unit is used to deposit the comparison of parameter preset, the real time data, the result of calculation, the comparing unit
As a result；
The comparing unit compares knot for the parameter preset, the real-time parameter and the result of calculation to obtain
Fruit；
The output unit is suitable for being electrically connected with the switch of the compressor or the refrigeration equipment, for relatively being tied according to described
Fruit controls the energization or power-off of the compressor.
8. the guard system of the refrigeration equipment according to any one of claim 1-6, which is characterized in that further include：Alarm
Device, the alarm are electrically connected with the control module.
9. a kind of guard method for compressor safe operation, which is characterized in that include the following steps：
Set the parameter preset of refrigeration equipment safe operation；
Measure the real time data under the refrigeration equipment operating status；
By the real time data or according to the calculated calculated value of the real time data compared with the parameter preset, and according to than
Relatively result exports control instruction, and the control instruction includes control compressor power-off.
10. the guard method according to claim 9 for compressor safe operation, which is characterized in that the default ginseng
Number includes the case temperature preset upper limit value Tcmax of the compressor, and the real time data includes the shell temperature of the compressor
Tc is spent, the step is by the real time data or according to the calculated calculated value of the real time data and the parameter preset ratio
Compared with, and control instruction is exported according to comparison result and includes：
As Tc ＞ Tcmax, the control module controls the compressor power-off.
11. the guard method according to claim 9 for compressor safe operation, which is characterized in that the default ginseng
Number includes inlet temperature and the compressor of the case temperature preset upper limit value Tcmax of the compressor, the condenser
Preset lower limit value Imin, the compressor of the preset difference value lower limiting value Dvmin of case temperature, the operating current of the compressor
Operating current preset upper limit value Imax, the real time data includes the case temperature Tc of the compressor and the condenser
Inlet temperature Td, include Dv, Dv=Td-Tc according to the calculated calculated value of the real time data, the step is by the reality
When data or according to the calculated calculated value of the real time data compared with the parameter preset, and according to comparison result export control
System instructs：
As Tc ＞ Tcmax, Dv≤Dvmin, and Imin≤I≤Imax, the control module controls the compressor power-off.
12. the guard method according to claim 9 for compressor safe operation, which is characterized in that the default ginseng
Number includes inlet temperature and the compressor of the case temperature preset upper limit value Tcmax of the compressor, the condenser
Preset lower limit value Imin, the compressor of the preset difference value lower limiting value Dvmin of case temperature, the operating current of the compressor
The preset upper limit value Imax of operating current, the preset upper limit value Tcondmax of condensation temperature of the condenser, the condensation
The preset lower limit value Δ Tcondmin of the change rate of temperature, the real time data include case temperature Tc and the institute of the compressor
The inlet temperature Td for stating condenser includes the variation of Dv and the condensation temperature according to the calculated calculated value of the real time data
Rate Δ Tcond, Dv=Td-Tc, the step by the real time data or according to the calculated calculated value of the real time data with
The parameter preset compares, and exports control instruction according to comparison result and include：
As Tc ＞ Tcmax, Dv≤Dvmin, Tcond≤Tcondmax, Δ Tcond≤Δ Tcondmin, and Imin≤I≤Imax
When, the control module controls the compressor power-off.
Priority Applications (2)
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| CN201810292056.7A CN108662730B (en) | 2018-03-30 | 2018-03-30 | Protection system for refrigeration equipment and protection method for safe operation of compressor |
| PCT/CN2018/112622 WO2019184332A1 (en) | 2018-03-30 | 2018-10-30 | Protection system of refrigeration device and protection method for safe operation of compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810292056.7A CN108662730B (en) | 2018-03-30 | 2018-03-30 | Protection system for refrigeration equipment and protection method for safe operation of compressor |
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| CN111780380A (en) * | 2020-06-15 | 2020-10-16 | 珠海格力电器股份有限公司 | Method and device for controlling running state of compressor |
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| CN108662730B (en) | 2021-02-12 |
| WO2019184332A1 (en) | 2019-10-03 |
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