CN102464166A - Refrigerated container cooler, refrigerated container and control method for refrigerated container cooler - Google Patents
Refrigerated container cooler, refrigerated container and control method for refrigerated container cooler Download PDFInfo
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- CN102464166A CN102464166A CN2010105352367A CN201010535236A CN102464166A CN 102464166 A CN102464166 A CN 102464166A CN 2010105352367 A CN2010105352367 A CN 2010105352367A CN 201010535236 A CN201010535236 A CN 201010535236A CN 102464166 A CN102464166 A CN 102464166A
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Abstract
The invention discloses a refrigerated container cooler, a refrigerated container with the refrigerated container cooler and a control method for the refrigerated container cooler. The refrigerated container cooler is provided with a controller to control the cooler so that at least one internal condition parameter is maintained within the set range; the cooler is also provided with at least two sensors to sense internal condition parameters at positions of different distances from the cooler in the refrigerated container; and the controller also comprises a parameter modification module to receive the sensing value of each sensor, calculate the real-time uniformity of the internal condition parameters in the refrigerated container and start sending an adjustment command when the internal condition parameters are close to the set ranges to certain extent during operation of the cooler in accordance with control commands, and the adjustment command can be superimposed with the power of the cooler controlled by the control commands and the speed of an evaporator fan of the cooler so that the real-time uniformity reaches the set uniformity. The temperature distribution uniformity in the container can be well judged, controlled and maintained, and the power consumption of the cooler can be reduced.
Description
Technical field
The present invention relates to the refrigerated container technical field, relate in particular to the cold machine of a kind of refrigerated container, have the control method of the refrigerated container and the cold machine of said refrigerated container of the cold machine of this refrigerated container.
Background technology
Along with the development of Refrigeration Transport Market with technology; The user is increasingly high to the uniformity requirement of refrigerated container the temperature inside the box, but the structural limitations of refrigerated container body makes its cold machine (or claiming congealing machine) can only be installed in the front end (end of chamber door is not set) of casing; The operation of cold machine and the control of state; All be that the wind pushing temperature sensor that adopts cold machine, the wind pushing temperature and the return air temperature signal of return air temperature sensor collection are judged the temperature conditions in the case, make the difference of wind pushing temperature or return air temperature and design temperature remain on a zone of reasonableness through the load of controlling fefrigerator.
Range of temperatures is-30 ℃～30 ℃ in the congealing machine control box at present, is the freezing and refrigeration demarcation line with-10 ℃ usually, is refrigeration more than-10 ℃, adopts design temperature to judge that running state belongs to freezing still refrigeration.
Under the frozen state, the sign temperature of the temperature inside the box is wind pushing temperature (promptly representing the temperature inside the box with wind pushing temperature), and the acquiescence evaporating fan moves high wind all the time.Wind pushing temperature near design temperature after, change low wind running, realize energy-conservation.
Under the freezing state, the sign temperature of the temperature inside the box is return air temperature (promptly representing the temperature inside the box with return air temperature), and the acquiescence evaporating fan moves low wind all the time.Can be higher with the design temperature difference, when needing to give the goods down quench, evaporating fan adopts high-speed operation.
For the control of cold machine, comprise that power for cold machine increases or reduces, and also comprises the rotating speed of the evaporating fan of the evaporator of adjusting cold machine.
Normally two grades in the cold machine of prior art, the rotating speed of said evaporating fan, promptly high wind shelves and general wind shelves.During near design temperature, explain that the temperature conditions in the deep freezer has reached the requirement of setting at return air temperature or wind pushing temperature, promptly the cold machine of may command adopts low power and the operation of low wind speed.And, explain that the temperature conditions in the refrigerated container does not also reach the requirement of setting when when return air temperature or wind pushing temperature and design temperature differ big, need the control fefrigerator to adopt superpower and high wind speed to move.
Yet the cold machine control of prior art is not introduced the correlation behavior parameter of far-end and is controlled.Cause the temperature inside the box skewness easily; For example under certain condition; Can have a certain distance with cold machine apart from the temperature of door end far away and the temperature of the front end that cold machine belongs to, suppose that the temperature inside the box setting should be-10.5 degrees centigrade, a door end temperature is-5 degrees centigrade at this moment; And the front end temperature drops to-11 degrees centigrade; This moment, cold machine passed through to detect the difference of return air temperature and design temperature, and what make is the mode that adopts low power and the operation of low wind speed, and this mode of this moment can not reflect the demand of an end; Make the temperature of door end more can't reach the setting requirement, make goods receive loss easily.
Except holding with cold machine door farthest; In the freight container other and cold facility have the position of different distance; Also be difficult to reach synchronously the temperature of setting, therefore also need new mode to realize that the temperature of each position in the refrigerated container is even with the refrigerated container front end.
If cold machine adopts the high wind speed air-supply all the time, can effectively improve the homogeneity of the temperature inside the box, but increase the power consumption of cold machine, purpose of energy saving can not be reached and good economic benefit can not be obtained.
Except temperature homogeneity; Other conditional parameters such as humidity, composition of air etc. in the refrigerated container also have inhomogeneity demand; Also need reach through adjustment to the operation of cold machine each position in the freight container evenly, do not possess the condition of this adjustment in the prior art equally.
Summary of the invention
The object of the invention is for providing a kind of refrigerated container cold machine, and conditional parameter reaches uniform technical matters in the case at the cold machine different distance of distance place that the cold machine of refrigerated container in the prior art can not make internal container to solve.
Second purpose of the present invention is to provide a kind of refrigerated container with the cold machine of refrigerated container of the present invention, with the uneven technical matters of conditional parameter in the case that solves the cold machine different distance of refrigerated container inner distance place in the prior art.
The 3rd purpose of the present invention is to provide the control method of the cold machine of a kind of refrigerated container of the present invention; With through control, solve the interior uneven technical matters of conditional parameter of case at the cold machine different distance of refrigerated container inner distance place in the prior art to the cold machine of refrigerated container.
For realizing above-mentioned purpose, technical scheme of the present invention is following:
The cold machine of a kind of refrigerated container, said cold facility have a controller, through sending control command to said cold machine, control said cold machine so that the interior conditional parameter of at least one case maintains in the setting range; Said cold machine also has at least two sensors; Be arranged in said cold machine or the said refrigerated container; And one of them sensor is arranged in the said refrigerated container, with in the said refrigerated container of sensing with the said case at said cold machine different distance place in conditional parameter; Said controller also comprises the parameter correcting module; Receive the sensing value of each said sensor; Calculate the real-time degree of uniformity of conditional parameter in said refrigerated container in the said case; When conditional parameter approaches said setting range to a certain extent said cold machine makes said case according to said control command operation in; Begin to send an adjustment instruction, be superimposed on the rotating speed of evaporator fan of power and said cold machine that said control command controls said cold machine so that said real-time degree of uniformity reaches the setting degree of uniformity.
Refrigerated container of the present invention has front end and door end, and its cold machine is arranged at said front end, and said cold machine is the cold machine of refrigerated container of the present invention.
The control method of the cold machine of a kind of refrigerated container of the present invention comprises step: step S1: said controller is controlled said cold machine so that the interior conditional parameter of at least a case maintains in the setting range.Step S2: said parameter correcting module receives conditional parameter signal in the freight container that each said sensor transmits and the said case said cold machine different distance place, calculating real-time degree of uniformity; Step S3; When said cold machine makes that according to the operation of said control command conditional parameter approaches said setting range to a certain extent in the said case; Said parameter correcting module begins to send adjustment instruction, is superimposed on the rotating speed of evaporator fan of power and said cold machine that said control command controls said cold machine so that said real-time degree of uniformity reaches the setting degree of uniformity.
Beneficial effect of the present invention is; The control method of the cold machine of refrigerated container of the present invention, refrigerated container of the present invention and the cold machine of said refrigerated container; Through the sensor of conditional parameter in other casees of temperature sensor or sensing is set in freight container; Gather the real-time degree of uniformity of its this conditional parameter of sensing value union, and compare, take the Different control mode so that it reaches the setting degree of uniformity with regard to comparative result with setting degree of uniformity; Better judged, controlled and kept the homogeneity that the temperature inside the box or other conditional parameters distribute; Avoided because the loss that the irregularity of some parameter is brought, reduced the power consumption of cold machine, also promoted the economic benefit of refrigerated container the storage goods.
Description of drawings
Fig. 1 is the control architecture figure of the cold machine of refrigerated container of first embodiment of the invention.
Fig. 2 is the scheme drawing of parameter correcting module of the cold machine of refrigerated container of first embodiment of the invention.
Fig. 3 is the transducer arrangements scheme drawing of the refrigerated container of third embodiment of the invention.
The specific embodiment
The exemplary embodiments that embodies characteristic of the present invention and advantage will be described in detail in following explanation.Be understood that the present invention can have various variations on various embodiment, its neither departing from the scope of the present invention, and explanation wherein and accompanying drawing be the usefulness of being used as explanation in itself, but not in order to restriction the present invention.
The refrigerated container of the embodiment of the invention has the cold machine of refrigerated container of the present invention.The refrigerated container of the embodiment of the invention is controlled cold machine by means of the cold machine control method of refrigerated container of the present invention.
The refrigerated container of various embodiments of the present invention; Have front end and door end; The same with prior art; Said cold machine is arranged at said front end, and the controller of the cold machine of said refrigerated container is controlled said cold machine so that the difference of said wind pushing temperature or return air temperature and design temperature maintains in the setting range; The collection of its wind pushing temperature, return air temperature reaches the mode to cold machine, and is identical with prior art, repeats no more.
Below based on different sensor arrange, conditional parameter in the different case, different degree of uniformity account form and a plurality of embodiment of Different control strategy, the detailed control method of introducing the cold machine of refrigerated container of the present invention, refrigerated container and the cold machine of refrigerated container.
First embodiment:
Different with prior art is; Except that the wind pushing temperature sensor and return air temperature sensor installed near cold machine or the cold machine; Said cold machine also is provided with a temperature sensor (abbreviating an end sensor as) in the refrigerated container of door end; Be used in the sensing refrigerated container door end temperature near the warehousing district of door end; In order to obtain the real-time degree of uniformity of temperature in the refrigerated container, except that the temperature sensor of door end, the selection wind pushing temperature that wind pushing temperature sensor sensed is as the front end temperature in the refrigeration pattern; The selection return air temperature that return air temperature sensor sensed is controlled the homogeneity of refrigeration the temperature inside the box through the parameter correcting module of controller as the front end temperature in frozen mode.
As depicted in figs. 1 and 2, in the first embodiment of the invention, be example with the frozen mode, the parameter correcting module comprises signal processing unit, arithmetic element, comparing unit, command unit and performance element.The door end temperature signal that signal processing unit, receiving gate end sensor transmit, the front end temperature signal that the reception return air temperature sensor transmits all are treated to temperature data; And calculate the real-time degree of uniformity of said the temperature inside the box by arithmetic element; Said real-time degree of uniformity is used numeric representation, and for example a door end temperature is 8 degrees centigrade, and the front end temperature is under 4 degrees centigrade the situation; The said real-time degree of uniformity of available its difference 4 (no unit) expression; Numerical value is big more, representes inhomogeneously more, and promptly homogeneity is poor more.In the present embodiment, setting degree of uniformity is 0, promptly requires door end temperature equal fully with the front end temperature, and certainly, in the less demanding occasion of some control accuracys, the setting degree of uniformity also can be numerical value such as 0.1,0.5,1.Comparing unit compares real-time degree of uniformity and setting degree of uniformity; After drawing comparative result, can promptly be adjusted to high speed gear by command unit according to the instruction that comparative result sends the rotating speed that changes said evaporator fan by low gear; And transmit said instruction to evaporator fan by performance element; And rotation speed of the fan fed back to command unit, to detect the execution of said instruction, this instruction implements real-time degree of uniformity always and equals to set till the degree of uniformity.
And the parameter correcting module sends the opportunity of adjustment instruction; Be controller control return air temperature to setting value near process in; For example the former gap of return air temperature and setting value is 4 degrees centigrade; Send the adjustment instruction when then can be close to 1 degree centigrade, start above-mentioned adjustment process in the former gap of return air temperature and setting value.
Second embodiment:
Present embodiment to adjust remain the temperature inside the box.
In the process of carrying out above-mentioned degree of uniformity adjustment, the gap of degree of uniformity is bigger sometimes, and is smaller sometimes, then can take different adjustment strategies.When for example the difference of door end temperature and front-end temperature is merely 1 degree centigrade (also can heal differential be scaled the poor of degree of uniformity), only adjust the rotating speed of the evaporator fan of said cold machine; When for example the difference of door end temperature and front-end temperature reached 2 degrees centigrade, the rotating speed of evaporator fan of power and said cold machine of then adjusting cold machine simultaneously was so that said real-time degree of uniformity reaches the setting degree of uniformity.
Concrete adjustment is as shown in table 1:
Table 1:
| Heal differential | Control to evaporator fan | Control to cold acc power |
| .5 | The rotation speed of the fan operation at a high speed | Cold unit frequency reduces 20Hz |
| 4 | The rotation speed of the fan operation at a high speed | Cold unit frequency reduces 15Hz |
| 3 | The rotation speed of the fan operation at a high speed | Cold unit frequency reduces 10Hz |
| 2 | The rotation speed of the fan operation at a high speed | Cold unit frequency reduces 5Hz |
| 1 | The rotation speed of the fan operation at a high speed | There is not instruction |
Can know from table 1,, revise and adjust the running state of unit and the rotating speed of evaporation wind speed, realize reducing the purpose of power consumption according to different real-time degree of uniformity or heal differentials.
Above-mentioned two embodiment, its common advantage is that only needing increases an extra sensor, can realize the effect of balance the temperature inside the box or humidity, its cost is low, is convenient to implement.
The 3rd embodiment:
The characteristics of present embodiment at first are the layout of sensor; Sensor is three pairs of totally 6 temperature sensors (among Fig. 3 1. 2. 3. 4. 5. 6.); As shown in Figure 3, be arranged in the top board middle position and the base plate middle position of front end of top board middle position and base plate middle position, the casing of place, two diagonal angles, the casing longitudinal middle part of an end respectively, than first embodiment; Increase the temperature sensor of casing longitudinal middle part, made degree of uniformity reaction more accurate of the temperature inside the box.
Had after the temperature data, needed the calculating real-time degree of uniformity, in the present embodiment, supposed that each temperature value is respectively A1, A2, A3, A4, A5, A6, found out a maximum temperature value A6 earlier, then real-time degree of uniformity value=(A1+A2+A3+A4+A5)/5A6.After obtaining real-time degree of uniformity value, follow-up mode can adopt the mode of first embodiment.
The 4th embodiment:
In order to reflect in the refrigerated container degree of uniformity of conditional parameter in temperature or other casees everywhere more accurately, can in refrigerated container, a plurality of sensors be set with said cold machine different distance place, below still be example with the temperature sensor.
In refrigerated container, during the uneven situation of occurrence temperature, normally the cold machine of distance position temperature contrast far away more is big more, and by near to being the process of a gradual change far.Therefore; In the present embodiment; The a plurality of temperature sensors of installing in refrigerated container, it is vertical to be distributed in said refrigerated container uniformly, supposes that cold machine is 20 feet apart from chamber door in the refrigerated container; Temperature sensor has five, and then said five temperature sensor C1, C2, C3, C4, C5 are installed in 4 feet, 8 feet, 12 feet, 16 feet in cold machine of distance and 20 feet places respectively.
Gathered after the temperature data of above-mentioned five sensors, can use the mode calculating real-time degree of uniformity of the 4th embodiment, also can use following mode calculating real-time degree of uniformity:
Judge the temperature situation up to standard of each position; See that which position to begin temperature from not up to standard, and draw and the corresponding relation of degree of uniformity in real time that promptly to begin corresponding real-time degree of uniformity not up to standard be 1 to C1; It is 2 that C2 begins corresponding real-time degree of uniformity not up to standard; It is 3 that C3 begins corresponding real-time degree of uniformity not up to standard, and it is 4 that C4 begins corresponding real-time degree of uniformity not up to standard, and it is 5 that C5 begins cooresponding real-time degree of uniformity not up to standard.
Draw after the above-mentioned real-time degree of uniformity value; Promptly can issue control command to cold machine or evaporator fan (specifically being the motor of evaporator fan) according to the mode of the table 1 of second embodiment; With the dependent instruction of the 1st, 2,3,4,5 row in real-time degree of uniformity value 1,2,3,4, the 5 difference corresponding tables 1, follow-up step is also identical with second embodiment.
The 5th embodiment:
Present embodiment and the 4th embodiment difference are that five sensors are changed to five groups of sensors, and every group of sensor can be two or more, can be arranged at respectively on base plate, top board or the sidewall.Every group of sensor readings averaged, as the Temperature numerical of this position.Perhaps, individual sensor meeting et out of order is arranged, can produce an obvious irrational value after the fault, before averaging, need this obvious unreasonable value removal.Present embodiment has further increased the accuracy of temperature acquisition, has avoided because the single-sensor fault is controlled adverse effect to cold machine.
In above-mentioned the 3rd embodiment to the five embodiment, be arranged at being connected cable and can being embedded in advance in the foaming layer of said refrigerated container of each said sensor and said cold machine in the said refrigerated container.Avoid the problems that cabling brought in case.
Among above-mentioned each embodiment, degree of uniformity wherein comprises real-time degree of uniformity and sets degree of uniformity; All be one with irrelevant amount such as the unit of temperature, humidity; What reflected is the degree of uniformity that temperature and humidity distributes, and therefore both can also can represent with percentum with numeric representation.
The program of parameter adjustment module can write and refresh the control program of said controller through the interface of cold machine.Setting degree of uniformitys wherein etc. can be imported through the external input device such as keyboard of cold machine by the numerical value that the user sets according to actual conditions.
And; The present invention is not exceeded with the foregoing description; Different sensor among above-mentioned each embodiment arranges, conditional parameter in the different case, different degree of uniformity account form and the mutual combination between the Different control strategy, belongs to embodiment of the present invention too.In the time of need adjusting in a plurality of casees conditional parameter at the same time, can preferentially adjust the high parameter of priority, for example the temperature inside the box to different parameter settings priority.
Technical scheme of the present invention is disclosed as above by preferred embodiment.Those skilled in the art should recognize change and the retouching of under the situation that does not break away from appended scope of the present invention that claim disclosed of the present invention and spirit, being done, and all belong within the protection domain of claim of the present invention.
Claims (10)
1. the cold machine of refrigerated container is characterized in that,
Said cold facility have a controller, through sending control command to said cold machine, control said cold machine so that the interior conditional parameter of at least one case maintains in the setting range;
Said cold machine also has at least two sensors; Be arranged in said cold machine or the said refrigerated container; And one of them sensor is arranged in the said refrigerated container, with in the said refrigerated container of sensing with the said case at said cold machine different distance place in conditional parameter;
Said controller also comprises the parameter correcting module; Receive the sensing value of each said sensor; Calculate the real-time degree of uniformity of conditional parameter in said refrigerated container in the said case; When conditional parameter approaches said setting range to a certain extent said cold machine makes said case according to said control command operation in; Begin to send an adjustment instruction, be superimposed on the rotating speed of evaporator fan of power and said cold machine that said control command controls said cold machine so that said real-time degree of uniformity reaches the setting degree of uniformity.
2. the cold machine of refrigerated container as claimed in claim 1; It is characterized in that; Conditional parameter is the temperature inside the box in the said case; Said sensor is three, comprises a temperature sensor that is arranged at an end, a wind pushing temperature sensor that is arranged at cold machine and a return air temperature sensor, and said parameter correcting module comprises:
Signal processing unit receives the temperature signal that each said sensor transmits and is treated to temperature data;
Arithmetic element receives the said temperature data that said signal processing unit transmits, and calculates said real-time degree of uniformity;
Comparing unit, more said real-time degree of uniformity and setting degree of uniformity draw comparative result;
Command unit sends the rotating speed of the evaporator fan that changes said cold machine according to the comparative result of said comparing unit, or the power that changes said cold machine simultaneously instructs with the said adjustment of the rotating speed of the evaporator fan of said cold machine;
Performance element is superimposed on said control command so that the load of said cold machine and the rotating speed of said evaporator fan are controlled with said adjustment instruction.
3. a refrigerated container has front end and door end, and its cold machine is arranged at said front end, it is characterized in that, said cold machine is claim 1 or the cold machine of 2 described refrigerated containers.
4. refrigerated container as claimed in claim 3; It is characterized in that; Totally three pairs of said sensors are arranged at the upper middle position and the lower middle position of front end of top board middle position and bottom side plate middle position, the casing of place, two diagonal angles, the casing longitudinal middle part of said door end respectively.
5. refrigerated container as claimed in claim 4 is characterized in that, is arranged at being connected in the foaming layer that cable is embedded in said refrigerated container in advance of said sensor and said cold machine in the said refrigerated container.
6. the control method of the cold machine of the said refrigerated container of claim 1 is characterized in that said control method comprises step:
Step S1: said controller is controlled said cold machine so that the interior conditional parameter of at least a case maintains in the setting range.
Step S2: said parameter correcting module receives conditional parameter signal in the freight container that each said sensor transmits and the said case said cold machine different distance place, calculating real-time degree of uniformity;
Step S3; When said cold machine makes that according to the operation of said control command conditional parameter approaches said setting range to a certain extent in the said case; Said parameter correcting module begins to send adjustment instruction, is superimposed on the rotating speed of evaporator fan of power and said cold machine that said control command controls said cold machine so that said real-time degree of uniformity reaches the setting degree of uniformity.
7. control method as claimed in claim 6; It is characterized in that; Conditional parameter is the temperature inside the box in the said case, and said sensor is three, comprises a temperature sensor that is arranged at an end, a wind pushing temperature sensor that is arranged at cold machine and a return air temperature sensor; When said cold machine is in the refrigeration pattern; Said controller is controlled wind pushing temperature in one first setting range in step S1, when said cold machine was in frozen mode, said controller was controlled return air temperature in one second setting range in step S1.
8. control method as claimed in claim 7 is characterized in that, in step S3: if in real time degree of uniformity and the difference of setting degree of uniformity only reach one first when setting difference, only adjust the rotating speed of the evaporator fan of said cold machine; When if degree of uniformity reaches one second setting difference with the difference of setting degree of uniformity in real time; And second sets difference sets difference greater than first, and the rotating speed of evaporator fan of power and said cold machine of then adjusting cold machine simultaneously is so that said real-time degree of uniformity reaches the setting degree of uniformity.
9. like claim 6 or 8 described control methods; It is characterized in that; In step S1, get in the said refrigerated container with the same distance of said cold machine but the aviation value after the unreasonable value of removal of a plurality of sensors at diverse location place as conditional parameter in the said case of this position.
10. control method as claimed in claim 9 is characterized in that, conditional parameter is temperature, humidity or composition of air in the said case.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010535236.7A CN102464166B (en) | 2010-11-03 | 2010-11-03 | Frozen products insulated container cold, frozen products insulated container and frozen products insulated container cold control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010535236.7A CN102464166B (en) | 2010-11-03 | 2010-11-03 | Frozen products insulated container cold, frozen products insulated container and frozen products insulated container cold control method |
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| CN102464166A true CN102464166A (en) | 2012-05-23 |
| CN102464166B CN102464166B (en) | 2017-03-15 |
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| CN104634031A (en) * | 2014-12-26 | 2015-05-20 | 珠海格力电器股份有限公司 | Transportation refrigerating unit inside temperature control method and device |
| CN105182768A (en) * | 2015-08-17 | 2015-12-23 | 惠州莫思特科技有限公司 | Intelligent control system |
| CN106337826A (en) * | 2015-07-10 | 2017-01-18 | 青岛中集特种冷藏设备有限公司 | Speed regulating system and refrigerating container with speed regulating system |
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| CN106337826B (en) * | 2015-07-10 | 2019-04-12 | 青岛中集特种冷藏设备有限公司 | Speed-regulating system and frozen products insulated container with it |
| CN105182768A (en) * | 2015-08-17 | 2015-12-23 | 惠州莫思特科技有限公司 | Intelligent control system |
| CN109800444A (en) * | 2017-11-17 | 2019-05-24 | 山东科技大学 | A kind of plasma quick freezing cabinet temperature uniformity design method |
| CN109171960A (en) * | 2018-07-25 | 2019-01-11 | 杭州三坛医疗科技有限公司 | Method for positioning light beam, guide channel localization method and positioning mechanism |
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