CN1987708A - Method for controlling constant temperature in frigerating chamber - Google Patents
Method for controlling constant temperature in frigerating chamber Download PDFInfo
- Publication number
- CN1987708A CN1987708A CN 200510133856 CN200510133856A CN1987708A CN 1987708 A CN1987708 A CN 1987708A CN 200510133856 CN200510133856 CN 200510133856 CN 200510133856 A CN200510133856 A CN 200510133856A CN 1987708 A CN1987708 A CN 1987708A
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- Prior art keywords
- reefer
- temperature
- thermostatically controlled
- controlled method
- curve
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Links
- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000001915 proofreading effect Effects 0.000 claims description 2
- 235000013399 edible fruits Nutrition 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 235000013311 vegetables Nutrition 0.000 description 4
- 230000008014 freezing Effects 0.000 description 3
- 238000007710 freezing Methods 0.000 description 3
- 208000001034 Frostbite Diseases 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 230000001934 delay Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000013211 curve analysis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 235000013611 frozen food Nutrition 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- NHDHVHZZCFYRSB-UHFFFAOYSA-N pyriproxyfen Chemical compound C=1C=CC=NC=1OC(C)COC(C=C1)=CC=C1OC1=CC=CC=C1 NHDHVHZZCFYRSB-UHFFFAOYSA-N 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
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- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
Using built performance database of cold storage room, and further based on change of ambient environment, the method calculates out temperature change influenced by change of ambient environment, and delay time of change so as to correct temperature of the cold storage room precisely. The invention controls thermostatic temperature of the cold storage room under changing ambient environment.
Description
Technical field
The invention relates to a kind of thermostatically controlled method, be applied to reefer, particularly a kind of thermostatically controlled method of reefer that is positioned under the variation of ambient temperature.
Background technology
The ultimate principle of freezing and refrigerating system, be to utilize equipment such as compressor, evaporator, condenser, expansion valve, interconnect with pipeline, and utilize compressor operation, and the refrigerant of pipeline inside is released with High Temperature High Pressure, continue by condenser, expansion valve, and become low-temperature condition, and in by evaporator the time, cold energy can be provided away, return at last and compress freeze cycle of formation in the compressor.
See also " Fig. 1 ", be to be general refrigerator test and performance curve, it adopts the standard of CNS 2062 to be implemented, to the eye, except the problem of frosting, defrosting, the control that all the other only need by temperature control equipment just can maintain the state of constant temperature, Keep cool, frozen food fresh.Yet the fact but not so, because adopt this standard, its refrigerator environment temperature is set in 30 ± 1 ℃, historical facts or anecdotes is tested the data quite stable that comes out can keep constant temperature, but on actual the use, the temperature of surrounding environment can not maintain the almost state of constant temperature, but can be changed along with weather, along with variation of ambient temperature, freezing, also fluctuation thereupon of refrigerated storage temperature see also " Fig. 2 ", when environment temperature is reduced to a certain temperature (time in severe winter), the refrigerated storage temperature that significantly departs from original setting makes refrigerated storage temperature reduce to freezing point and causes the vegetables and fruits frostbite.
In general, the best cold storage environment of food is 3 ℃, 90%RH, and it is wherein more responsive with vegetables and fruits, in case temperature variation departs from too big, tend to make and the vegetables and fruits frostbite, significantly reduce its appearance for paying attention to most vegetables and fruits attractive in appearance, cause the unsalable or problems of nobody shows any interest in such as some wholesale dealers, sales field, relative its cost burden of also increase.
Summary of the invention
For addressing the above problem, the objective of the invention is to propose the thermostatically controlled method of a kind of reefer, be to change down in ambient temperature, reach the thermostatically controlled method of reefer.
The thermostatically controlled method of disclosed a kind of reefer according to the present invention is in order to carrying out thermostatic control at a reefer, it is characterized in that, this method is to include the following step:
Measure a temperature of this reefer surrounding environment;
Thermotonus value according to this this reefer of temperature computation;
Wait for a time delay; And
The temperature of proofreading and correct this reefer according to this thermotonus value.
Wherein be that the required heat of temperature that variation according to this ambient temperature changes this reefer passes the time and defines this time delay.
Wherein this thermotonus value is calculated and is tried to achieve by setting up this reefer performance database.
Wherein include a variation of ambient temperature curve and a temperature of refrigerating chamber change curve in this reefer performance database.
Wherein this variation of ambient temperature curve is to be one-period property change curve.
Wherein this temperature of refrigerating chamber change curve is to be one-period property change curve.
Description of drawings
Relevant detailed content of the present invention and technology below cooperate embodiment and description of drawings as follows, wherein:
Fig. 1 is test of known standard refrigerator and performance chart.
Fig. 2 is temperature test and the performance chart for refrigerator under the known variations environment temperature.
Fig. 3 is the temperature test of refrigerator under the Changing Environment temperature and performance curve analysis chart.
Fig. 4 is the steps flow chart synoptic diagram for the thermostatically controlled method of reefer of the present invention.
Fig. 5 is the flow chart of steps for the embodiment that utilizes the thermostatically controlled method of reefer of the present invention.
Fig. 6 is for utilizing refrigerator temperature and the performance chart after the thermostatically controlled method of reefer of the present invention.
Embodiment
The thermostatically controlled method of disclosed reefer according to the present invention, be primarily aimed at the drawback that ambient temperature temperature of refrigerating chamber that variation causes changes, and the constant-temperature control method that is proposed, so, at first see also " Fig. 3 ", in the time of can changing at ambient temperature, the temperature variations that reefer produced (affected changing condition).The temperature of external environment is fluctuation to some extent along with weather, shown in " Fig. 3 ", can depart from standard temperature one temperature difference (as illustrating 1. among the figure) is arranged, along with this temperature change, reefer also can be along with producing thermotonus value (as illustrating 2. among the figure), and because reefer has quite thick thermal wall mostly, so along with its effect of heat insulation, rates of heat transfer, and can produce the time delay (as illustrating 3. among the figure) that waits scarcely, in other words, 1. ambient temperature changes, will in time delay 3. after, make reefer change temperature 2..
So, under this principle, the thermostatically controlled method of reefer of the present invention, see also " Fig. 4 ", at first measure the temperature (step 401) of reefer surrounding environment, and according to this temperature change, ask and calculate reefer institute corresponding thermotonus value (variable quantity) (step 402), and the latency delays time arrives (step 403), if also just do not arrive and proofread and correct earlier time delay, however can make the temperature of reefer that anti-phase variation (minus effect) is arranged, if temperature reduces, but before reducing as yet, just temperature of refrigerating chamber is not heightened, can be made the temperature of reefer in this section period too high on the contrary; Opposite, if environment temperature improves, but before improving as yet, just temperature of refrigerating chamber is not turned down, can make the temperature of reefer in this section period low excessively on the contrary; No matter be which kind of situation, all bad influence can be arranged for the article in the reefer.So, need the latency delays time to arrive after, the side carries out the correction (step 404) of temperature of refrigerating chamber.On the other hand, if before the time delay of no show still, ambient temperature changes again, then corresponding equally and adjust, and for this part convert, correction data, can set up the reefer performance database in advance and quicken to calculate.
At this, be illustrated for an embodiment, see also " Fig. 5 ", reefer thermostatic control (step 501) at first includes variation of ambient temperature curve and temperature of refrigerating chamber change curve in the reefer performance database, just it is all periodically variable curve for a long time, cycle is 24 hours, and similar be a string ripple curve, can represent by a+b*sin (ω t) haply, obtain (Fig. 3) according to experiment, it can be expressed as respectively:
Variation of ambient temperature curve: 21.64+6.60*sin (ω
1T)
Temperature of refrigerating chamber change curve: 2.24+1.39*sin (ω
2T-t
r)
ω wherein
1Be similar to ω
2And summary is 24 hours, and t
rBeing time delay, is 2.5 hours.Shown in " Fig. 5 ", drop to 20 when spending (step 502) when measuring ambient temperature, bring the variation of ambient temperature curve into and obtain sin (ω
1T) be-0.248, sin (ω
2T) should also be-0.248, so asking and calculating the temperature of refrigerating chamber reacting value is 1.9, just after 2.5 hours time delay, reefer has the change (step 503) that drops to 1.9 degree, if will keep constant temperature 3 degree, the refrigeration design temperature need up be revised 1.1 degree (step 504), whether the judgement time delay reached (step 505) in 2.5 hours, if do not have, then after the time timing 30 minutes (step 507), return step 502 and repeat,, the reefer design temperature is heightened 1.1 degree (step 506) if arrived.After utilization the present invention control, its curve map can make reefer reach the control of constant temperature shown in " Fig. 6 ".
Though the present invention discloses as above with aforesaid preferred embodiment; right its is not in order to limit the present invention; anyly have the knack of this operator; without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking accompanying the claim person of defining.
Claims (6)
1, the thermostatically controlled method of a kind of reefer is in order to carrying out thermostatic control at a reefer, it is characterized in that, this method is to include the following step:
Measure a temperature of this reefer surrounding environment;
Thermotonus value according to this this reefer of temperature computation;
Wait for a time delay; And
The temperature of proofreading and correct this reefer according to this thermotonus value.
As claim 1 a thermostatically controlled method of described reefer, it is characterized in that 2, wherein be that the required heat of temperature that variation according to this ambient temperature changes this reefer passes the time and defines this time delay.
As claim 1 a thermostatically controlled method of described reefer, it is characterized in that 3, wherein this thermotonus value is calculated and tried to achieve by setting up this reefer performance database.
4, as claim 3 a thermostatically controlled method of described reefer, it is characterized in that, wherein include a variation of ambient temperature curve and a temperature of refrigerating chamber change curve in this reefer performance database.
As claim 4 a thermostatically controlled method of described reefer, it is characterized in that 5, wherein this variation of ambient temperature curve is to be one-period property change curve.
As claim 4 a thermostatically controlled method of described reefer, it is characterized in that 6, wherein this temperature of refrigerating chamber change curve is to be one-period property change curve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101338567A CN100555150C (en) | 2005-12-22 | 2005-12-22 | The thermostatically controlled method of reefer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101338567A CN100555150C (en) | 2005-12-22 | 2005-12-22 | The thermostatically controlled method of reefer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1987708A true CN1987708A (en) | 2007-06-27 |
| CN100555150C CN100555150C (en) | 2009-10-28 |
Family
ID=38184533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101338567A Active CN100555150C (en) | 2005-12-22 | 2005-12-22 | The thermostatically controlled method of reefer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100555150C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101685298B (en) * | 2008-09-25 | 2011-11-23 | 三洋电机株式会社 | Controller for cooling system |
| CN102385639A (en) * | 2010-08-30 | 2012-03-21 | 谢建浩 | Cold efficiency evaluation method for refrigeration truck |
| CN102187739B (en) * | 2008-10-17 | 2015-04-15 | 皇家飞利浦电子股份有限公司 | Method and apparatus for controlling an illumination system in a temperature controlled environment |
| CN113587521A (en) * | 2021-07-19 | 2021-11-02 | 珠海格力电器股份有限公司 | Refrigerator cold storage chamber temperature control method and device, refrigerator and storage medium |
| CN116430923A (en) * | 2023-06-12 | 2023-07-14 | 沈阳兴华诺车辆科技有限公司 | Intelligent control and regulation method and device for temperature |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2259580C2 (en) * | 2002-05-31 | 2005-08-27 | Курский государственный технический университет | Method for automatic temperature adjustment with decreased dynamic error in apparatus with heating cover |
| WO2005016784A2 (en) * | 2003-08-15 | 2005-02-24 | Gasm Limited | Thermally insulating containers |
| GB2404911B (en) * | 2003-08-15 | 2006-09-20 | Stephen Tew | Containers |
| CN1601211A (en) * | 2004-10-13 | 2005-03-30 | Tcl家用电器（惠州）有限公司 | Temperature control equipment in use for full automatic mechanical refrigerator |
-
2005
- 2005-12-22 CN CNB2005101338567A patent/CN100555150C/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101685298B (en) * | 2008-09-25 | 2011-11-23 | 三洋电机株式会社 | Controller for cooling system |
| CN102187739B (en) * | 2008-10-17 | 2015-04-15 | 皇家飞利浦电子股份有限公司 | Method and apparatus for controlling an illumination system in a temperature controlled environment |
| CN102385639A (en) * | 2010-08-30 | 2012-03-21 | 谢建浩 | Cold efficiency evaluation method for refrigeration truck |
| CN102385639B (en) * | 2010-08-30 | 2015-11-18 | 宁波凯福莱特种汽车有限公司 | A kind of cold effect appraisal procedure of chill car |
| CN113587521A (en) * | 2021-07-19 | 2021-11-02 | 珠海格力电器股份有限公司 | Refrigerator cold storage chamber temperature control method and device, refrigerator and storage medium |
| CN116430923A (en) * | 2023-06-12 | 2023-07-14 | 沈阳兴华诺车辆科技有限公司 | Intelligent control and regulation method and device for temperature |
| CN116430923B (en) * | 2023-06-12 | 2023-08-15 | 沈阳兴华诺车辆科技有限公司 | Intelligent control and regulation method and device for temperature |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100555150C (en) | 2009-10-28 |
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