CN104613690A - Control method and control system for condenser temperature protection - Google Patents
Control method and control system for condenser temperature protection Download PDFInfo
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- CN104613690A CN104613690A CN201410784708.0A CN201410784708A CN104613690A CN 104613690 A CN104613690 A CN 104613690A CN 201410784708 A CN201410784708 A CN 201410784708A CN 104613690 A CN104613690 A CN 104613690A
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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
- 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
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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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2116—Temperatures of a condenser
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- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention belongs to the field of refrigeration appliances, in particular to a control method and control system for condenser temperature protection. The control method for the condenser temperature protection comprises the following steps that real-time temperature of a condenser is detected by a temperature sensor, sampling is performed on obtained temperature data by a sampling unit according to a sampling period, the temperature data are transmitted to a main control unit, and the main control unit controls the operation state of a compressor according to the change rate of the temperature data; when the rising speed of the temperature of the condenser is judged to be too high, the compressor is controlled to be closed down; if the rising speed of the temperature of the condenser is not out of a normal range, the compressor is controlled to be operated normally. Accordingly, the temperature change of the condenser can be monitored in real time, the operation state of the compressor can be controlled through the change rate of the temperature data, the misinformation rate is reduced, and the stability and reliability of a refrigeration system are improved.
Description
Technical field
The invention belongs to refrigeration appliance field, particularly relate to control method and the control system of the protection of a kind of condenser temperature.
Background technology
For the powerful refrigeration appliance such as air-conditioning, refrigerator, its safety and reliability is the problem that research staff pays special attention to.In the process of refrigeration, refrigerant is heat release within the condenser, and condenser temperature can be caused to continue to raise.Condenser can affect the life-span of itself crossing operation under high temperature for a long time, even can the security incident such as initiation fire, electric leakage.
At present, general way arranges high temperature protection on condenser, namely on condenser, installs temperature-sensing element (device).After temperature is more than a definite value, send signal by main control unit, control compressor shutdown, household electrical appliances stop refrigeration, until condenser temperature is reduced to another definite value, main control unit sends another signal, and household electrical appliances continue refrigeration.But this method exists shortcomings, such as, undertaken judging and operating by single temperature spot, there is certain hysteresis quality, can not the change procedure of monitoring temperature, condenser is easily reported by mistake etc.
Summary of the invention
In view of this, first namely object of the present invention is the control method providing a kind of condenser temperature to protect, with solve existing guard method have hysteresis quality, can not monitoring temperature change procedure, easily produce the technical problem of wrong report.
The control method of condenser temperature protection provided by the invention, comprises the following steps:
Temperature detection: detected by the real time temperature of temperature sensor to condenser;
Data sampling: by sampling unit, obtained temperature data was sampled according to the sampling period, and be transferred to main control unit;
Judge first to control: main control unit controls the running status of compressor according to the rate of change of described temperature data: when the rate of rise in temperature of condenser is judged as too fast, control compressor shutdown; If the rate of rise in temperature of condenser does not exceed normal range (NR), then control compressor and as usual run.
On the other hand, the present invention also aims to the control system providing a kind of condenser temperature to protect, can solve equally existing protection system have hysteresis quality, can not monitoring temperature change procedure, easily produce the technical problem of wrong report.
The control system of condenser temperature protection provided by the invention, comprising:
Temperature sensor, for detecting the real time temperature of condenser;
Sampling unit, for sampling according to the sampling period to obtained temperature data, and is transferred to main control unit;
Main control unit, for controlling the running status of compressor: when the rate of rise in temperature of condenser is judged as too fast, control compressor shutdown according to the rate of change of described temperature data; If the rate of rise in temperature of condenser does not exceed normal range (NR), then control compressor and as usual run.
The control method protected according to condenser temperature provided by the invention and control system, by temperature sensor and sampling unit, the temperature to condenser detects and samples, main control unit is monitored in real time to the process that condenser temperature changes, and the running status of compressor is controlled according to the rate of change of temperature data: when the rate of rise in temperature of condenser is judged as too fast, control compressor shutdown; If the rate of rise in temperature of condenser does not exceed normal range (NR), then control compressor and as usual run.Thus, the variations in temperature of condenser can be monitored in real time, be controlled, to improve the reliability of refrigeration system by the running status of rate of change to compressor of temperature data.
Accompanying drawing explanation
Fig. 1 is the control method realization flow figure of the condenser temperature protection that the embodiment of the present invention provides;
Fig. 2 is the particular flow sheet of the control method of the condenser temperature protection that another embodiment of the present invention provides;
Fig. 3 is the structured flowchart of the control system of the condenser temperature protection that the embodiment of the present invention provides;
Fig. 4 is the structured flowchart of the control system of the condenser temperature protection that another embodiment of the present invention provides.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Fig. 1 is the control method realization flow figure of the condenser temperature protection that first embodiment of the invention provides, and for convenience of explanation, illustrate only part related to the present embodiment, as shown in the figure:
A control method for condenser temperature protection, comprising:
Step S110: detected by the real time temperature of temperature sensor to condenser.
Step S120: by sampling unit, obtained temperature data was sampled according to the sampling period, and be transferred to main control unit.
Step S130: main control unit controls the running status of compressor according to the rate of change of described temperature data: when the rate of rise in temperature of condenser is judged as too fast, performs step S140: control compressor shutdown; If the rate of rise in temperature of condenser is in normal range (NR), then controls compressor and as usual run, and return execution step S110 and step S120.
According to the control method of the condenser temperature protection that the present embodiment provides, main control unit controls the operation of compressor after receiving the temperature data of temperature sensor and sampling unit acquisition according to the rate of change of described temperature data.When rate of rise in temperature is too fast, control compressor shutdown, if rate of rise in temperature is within normal range (NR), then controls compressor and as usual run.The variations in temperature of condenser can be monitored thus in real time, to improve the reliability of refrigeration system.
As preferably, the control method of the condenser temperature protection that the embodiment of the present invention provides, the fault that may can also exist refrigeration system and potential risk are analyzed, and improve the reliability of refrigeration system further.
Namely Fig. 2 shows the concrete implementing procedure of the condenser temperature protecting control method that above preferred embodiment provides.After refrigeration system starts, see Fig. 2:
Step S200: compressor start runs.
Step S210: detected by the real time temperature of temperature sensor to condenser.
Step S220: by sampling unit, obtained temperature data was sampled according to the sampling period, and be transferred to main control unit.
Step S230: main control unit controls the running status of compressor according to the rate of change of described temperature data: realize particular by judging that whether the rate of rise in temperature of condenser is too fast.When being judged as too fast, perform step S240; If do not exceed normal range (NR), then control compressor and as usual run, and return execution step S210.
Step S240: control compressor shutdown.
Step S250: temperature sensor and sampling unit continue detect real time temperature and sample.
Step S260: according to the rate of change of the temperature data after compressor shutdown, main control unit judges whether described compressor exists fault, particular by judging whether the temperature decrease speed of condenser realizes excessively slowly.When being judged as slow, performed step S270; If do not exceed normal range (NR), and when the temperature of condenser drops to critical temperature value Trun, return and perform step S200.
Step S270: judge compressor cooling system fault.
As more excellent embodiment, after system judges that compressor cooling system breaks down, also to continue to perform step S280: carry out reminding user compressor by display unit and/or buzzing unit and break down, carry out relevant treatment with this reminding user, ensure refrigeration system reliability of operation further.
Further, in specific implementation process, when performing step S240 (control compressor shutdown), main control unit can also record current temperature value Tstop; Post-condenser temperature decline process in, described critical temperature value Trun is relevant to the temperature value Tstop recorded, and meeting functional relation one to one between the two, such as, can be as formula T
run=g (T
stop) the once linear functional relation that represents of+x.This is only and exemplifies, and is not used in restriction.
In the above-described embodiments, " main control unit controls the running status of compressor according to the rate of change of described temperature data: realize particular by judging that whether the rate of rise in temperature of condenser is too fast " in step S230, its specific implementation process can be as follows:
The temperature data that sampling unit transmits first is fitted to function T=f (t) by main control unit, and wherein, t is the moment of sampling, and T is the real time temperature of condenser;
According to formula
calculate the rate of change obtaining described temperature data; Wherein, λ be stochastic generation 1 to u between random integers, Δ t is the sampling period, and u is pre-configured parameter, and meets u<t/ Δ t;
As k (t) > ξ, judge that the rate of rise in temperature of condenser is too fast, control compressor shutdown;
As k (t)≤ξ, judge that the rate of rise in temperature of condenser is in normal range (NR), control compressor and as usual run.
Similar; " according to the rate of change of the temperature data after compressor shutdown, main control unit judges whether described compressor cooling system exists fault; particular by judging whether the temperature decrease speed of condenser realizes excessively slowly " in step S260, its specific implementation process can be as follows:
Main control unit is according to formula
calculate the rate of change of the temperature data after obtaining compressor shutdown; Wherein, η be stochastic generation 1 to v between random integers, Δ t is the sampling period, and v is pre-configured parameter, and meets v<t/ Δ t;
As k (t) >=ε, judge that the temperature decrease speed of condenser is as excessively slow, judge compressor cooling system fault;
As k (t) < ε, judge that the temperature decrease speed of condenser is in normal range (NR), and when the temperature of condenser drops to critical temperature value Trun, control compressor and again to start shooting operation.
Below by real case, explanation is further expalined to above-described embodiment:
Refrigeration system starts, and after compressor start runs, the real time temperature of temperature sensor to condenser detects.Sampling period, Δ t was set to 30 seconds, and the value that u value is set to 10, ξ is set to 4.Run after 20 minutes,
The temperature data sampled is as shown in the table, and wherein n is the sequence number obtaining data.
Like this, main control unit receives the real time temperature T value of a condenser at every turn from sampling unit, by stochastic generation λ value, and perform formula
judge.
Now, for t=9,
K (9) value calculated is less than ξ, and namely rate of rise in temperature does not exceed normal range (NR), illustrates that condenser temperature change is in safe range, controls compressor and as usual runs.Until when there is k (t) > ξ, judge that the rate of rise in temperature of condenser is too fast, control compressor shutdown.
When controlling compressor shutdown, the value of current Tstop is 75 DEG C, and main control unit records the value of Tstop, and by the formula T preset
run=g (T
stop) to extrapolate Trun be 53 DEG C to+x.Temperature sensor and sampling unit continue detect real time temperature and sample.During this period, sampling unit sampling period Δ t is that (in fact, this sampling period Δ t also can be identical with the cycle before in 1 minute.This sentences 1 minute for example, just in order to illustrate that two sampling periods can be identical, also can be different), u is set to 5, ε and is set to-0.8, and the temperature data collected is as shown in the table.
| n | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 |
| T | 74 | 73 | 71 | 70 | 68 | 66 | 65 | 63 | 62 | 60 | 60 | 59 | 58 | 56 | 55 | 53 |
| λ | 1 | 2 | 1 | 3 | 2 | 3 | 1 | 3 | 4 | 2 | 5 | 4 | 4 | 3 | 2 | 1 |
Main control unit receives the value of a T at every turn from sampling unit, just generate a η value, and perform formula
judge, until the temperature of condenser drops to Trun.
For t=6 in table, when the 6th minute, the temperature data T=66 DEG C of the sampling unit transmission that main control unit receives, and generate random number 3, as shown from the above formula,
On the other hand, the control system that the embodiment of the present invention also provides a kind of condenser temperature to protect, can solve equally existing protection system have hysteresis quality, can not monitoring temperature change procedure, easily produce the technical problem of wrong report.
Fig. 3 is the structured flowchart of the control system of this condenser temperature protection, see Fig. 3:
The control system of condenser temperature protection, comprising:
Temperature sensor 310, for detecting the real time temperature of condenser;
Sampling unit 320, for sampling according to the sampling period to obtained temperature data, and is transferred to main control unit;
Main control unit 330, for controlling the running status of compressor: when the rate of rise in temperature of condenser is judged as too fast, control compressor shutdown according to the rate of change of described temperature data; If the rate of rise in temperature of condenser does not exceed normal range (NR), then control compressor and as usual run.
In specific implementation process, as preferably, according to the rate of change of the temperature data after compressor shutdown, described main control unit 330 is also for judging whether described compressor exists fault: when the temperature decrease speed of condenser was judged as slow, judges compressor cooling system fault; If the temperature decrease speed of condenser is within normal range (NR), and when the temperature of condenser drops to critical temperature value Trun, controls compressor and again to start shooting operation.
Fig. 4 is the structured flowchart of the control system of the condenser temperature protection that another embodiment of the present invention provides.In the control system that the present embodiment provides, except temperature sensor 410, sampling unit 420 and main control unit 430, also comprise a fault cues unit 440.When judging compressor cooling system fault, this fault cues unit 440 may be used for reminding user compressor and breaks down.Further, preferably, fault cues unit 440 can be at least one in display unit and buzzing unit.Particularly, display unit is for showing the code etc. of fault message, and buzzing unit is used for cue of sounding.
The control method protected according to condenser temperature provided by the invention and control system, by temperature sensor and sampling unit, the temperature to condenser detects and samples, main control unit is monitored in real time to the process that condenser temperature changes, and the running status of compressor is controlled according to the rate of change of temperature data: when the rate of rise in temperature of condenser is judged as too fast, control compressor shutdown; If the rate of rise in temperature of condenser does not exceed normal range (NR), then control compressor and as usual run.Thus; the variations in temperature of condenser can be monitored in real time; controlled by the running status of rate of change to compressor of temperature data; reduce rate of false alarm; and also proceed to detect and sampling by temperature sensor and sampling unit after after the heat radiation of control compressor shutdown, main control unit continues to judge according to the rate of change of temperature data, if the temperature decrease speed of condenser is excessively slow; then judge compressor cooling system fault, further increase stability and the reliability of refrigeration system.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, although with reference to previous embodiment to invention has been comparatively detailed description, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments or carry out equivalent replacement to wherein portion of techniques feature.All any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a control method for condenser temperature protection, it is characterized in that, described control method comprises the following steps:
Temperature detection: detected by the real time temperature of temperature sensor to condenser;
Data sampling: by sampling unit, obtained temperature data was sampled according to the sampling period, and be transferred to main control unit;
Basis judges to control: main control unit controls the running status of compressor according to the rate of change of described temperature data: when the rate of rise in temperature of condenser is judged as too fast, controls compressor shutdown; If the rate of rise in temperature of condenser does not exceed normal range (NR), then control compressor and as usual run.
2. the control method of condenser temperature protection as claimed in claim 1, is characterized in that, described control method also comprises after control compressor shutdown:
Continue to perform said temperature to detect and data sampling step;
Again judge to control: according to the rate of change of the temperature data after compressor shutdown, main control unit judges whether described compressor cooling system exists fault: when the temperature decrease speed of condenser was judged as slow, judge compressor cooling system fault; If the temperature decrease speed of condenser is in normal range (NR), and when the temperature of condenser drops to critical temperature value Trun, controls compressor and again to start shooting operation.
3. the control method of condenser temperature protection as claimed in claim 1, it is characterized in that, described basis judges that rate-determining steps is specially:
The temperature data that sampling unit transmits is fitted to function T=f (t) by main control unit, and wherein, t is the moment of sampling, and T is the real time temperature of condenser;
According to formula
calculate the rate of change obtaining described temperature data; Wherein, λ be stochastic generation 1 to u between random integers, Δ t is the sampling period, and u is pre-configured parameter, and meets u<t/ Δ t;
As k (t) > ξ, judge that the rate of rise in temperature of condenser is too fast, control compressor shutdown;
As k (t)≤ξ, judge that the rate of rise in temperature of condenser is in normal range (NR), control compressor and as usual run.
4. the control method of condenser temperature protection as claimed in claim 3, is characterized in that, describedly again judges that rate-determining steps is specially:
Main control unit is according to formula
calculate the rate of change of the temperature data after obtaining compressor shutdown; Wherein, η be stochastic generation 1 to v between random integers, Δ t is the sampling period, and v is pre-configured parameter, and meets v<t/ Δ t;
As r (t) >=ε, judge that the temperature decrease speed of condenser is as excessively slow, judge compressor cooling system fault;
As r (t) < ε, judge that the temperature decrease speed of condenser is in normal range (NR), and when the temperature of condenser drops to critical temperature value Trun, control compressor and again to start shooting operation.
5. the control method of condenser temperature protection as claimed in claim 2, it is characterized in that, when controlling compressor shutdown, main control unit records current temperature value Tstop;
Described critical temperature value Trun is relevant to described temperature value Tstop, meets functional relation one to one between the two.
6. the control method of condenser temperature protection as claimed in claim 2, it is characterized in that, described control method also comprises:
When judging compressor cooling system fault, broken down by display unit and/or buzzing unit reminding user compressor.
7. a control system for condenser temperature protection, it is characterized in that, described control system comprises:
Temperature sensor, for detecting the real time temperature of condenser;
Sampling unit, for sampling according to the sampling period to obtained temperature data, and is transferred to main control unit;
Main control unit, for controlling the running status of compressor: when the rate of rise in temperature of condenser is judged as too fast, control compressor shutdown according to the rate of change of described temperature data; If the rate of rise in temperature of condenser does not exceed normal range (NR), then control compressor and as usual run.
8. the control system of condenser temperature protection as claimed in claim 7, it is characterized in that, described main control unit is also for judging according to the rate of change of the temperature data after compressor shutdown whether described compressor cooling system exists fault: when the temperature decrease speed of condenser was judged as slow, judges compressor cooling system fault; If the temperature decrease speed of condenser is in normal range (NR), and when the temperature of condenser drops to critical temperature value Trun, controls compressor and again to start shooting operation.
9. the control system of condenser temperature protection as claimed in claim 7, it is characterized in that, described control system also comprises:
Fault cues unit, for when judging compressor cooling system fault, reminding user compressor breaks down.
10. the control system of condenser temperature protection as claimed in claim 9, is characterized in that, described fault cues unit comprises display unit for showing fault message and at least one among the buzzing unit of prompting of sounding.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106441632A (en) * | 2016-09-07 | 2017-02-22 | 广州视源电子科技股份有限公司 | Detection method of thermometer and detection device of thermometer |
| CN106839260A (en) * | 2016-12-12 | 2017-06-13 | 广东芬尼克兹节能设备有限公司 | One kind exhaust protection control method and system |
| CN108662730A (en) * | 2018-03-30 | 2018-10-16 | 广东美芝制冷设备有限公司 | The guard system of refrigeration equipment and guard method for compressor safe operation |
| CN110986254A (en) * | 2019-11-25 | 2020-04-10 | 珠海格力电器股份有限公司 | Water multi-connected air conditioner control method, computer readable storage medium and air conditioner |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB962640A (en) * | 1959-12-01 | 1964-07-01 | Bbc Brown Boveri & Cie | Plant for cooling the loading space in engine-propelled vehicles |
| US20010017037A1 (en) * | 2000-02-28 | 2001-08-30 | Martin Kerron James | Thermostat controller |
| CN102466304A (en) * | 2010-11-16 | 2012-05-23 | 力博特公司 | Air-conditioning system and control method of condensation fan thereof |
| CN102650465A (en) * | 2012-05-10 | 2012-08-29 | 南京佳力图空调机电有限公司 | Refrigerating system of air conditioner |
-
2014
- 2014-12-16 CN CN201410784708.0A patent/CN104613690B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB962640A (en) * | 1959-12-01 | 1964-07-01 | Bbc Brown Boveri & Cie | Plant for cooling the loading space in engine-propelled vehicles |
| US20010017037A1 (en) * | 2000-02-28 | 2001-08-30 | Martin Kerron James | Thermostat controller |
| CN102466304A (en) * | 2010-11-16 | 2012-05-23 | 力博特公司 | Air-conditioning system and control method of condensation fan thereof |
| CN102650465A (en) * | 2012-05-10 | 2012-08-29 | 南京佳力图空调机电有限公司 | Refrigerating system of air conditioner |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106441632A (en) * | 2016-09-07 | 2017-02-22 | 广州视源电子科技股份有限公司 | Detection method of thermometer and detection device of thermometer |
| CN106441632B (en) * | 2016-09-07 | 2019-01-29 | 广州视源电子科技股份有限公司 | Detection method of thermometer and detection device of thermometer |
| CN106839260A (en) * | 2016-12-12 | 2017-06-13 | 广东芬尼克兹节能设备有限公司 | One kind exhaust protection control method and system |
| CN108662730A (en) * | 2018-03-30 | 2018-10-16 | 广东美芝制冷设备有限公司 | The guard system of refrigeration equipment and guard method for compressor safe operation |
| CN110986254A (en) * | 2019-11-25 | 2020-04-10 | 珠海格力电器股份有限公司 | Water multi-connected air conditioner control method, computer readable storage medium and air conditioner |
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