CN113909006A - Method and device for controlling temperature of centrifugal machine and centrifugal machine - Google Patents
Method and device for controlling temperature of centrifugal machine and centrifugal machine Download PDFInfo
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- CN113909006A CN113909006A CN202111210161.XA CN202111210161A CN113909006A CN 113909006 A CN113909006 A CN 113909006A CN 202111210161 A CN202111210161 A CN 202111210161A CN 113909006 A CN113909006 A CN 113909006A
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Abstract
The application relates to the technical field of centrifuges and discloses a method for controlling the temperature of a centrifuge, wherein the centrifuge comprises a refrigerating system consisting of a compressor, an evaporator, a condenser and a thermal expansion valve; the method comprises the following steps: determining a reference temperature ta(ii) a Detecting the temperature in the cavity of the centrifugal machine to obtain a temperature detection value tb(ii) a Calculating a temperature detection value tbWith a reference temperature taThe difference Δ t of (d); and under the condition that the absolute value of the difference value delta t is greater than or equal to a preset threshold value, adjusting the rotating speed of the variable frequency compressor to enable the temperature in the cavity of the centrifugal machine to be close to the target temperature. The method can adjust the rotating speed of the variable frequency compressor based on the temperature in the cavity of the centrifugal machine, so that the temperature in the cavity of the centrifugal machine is more stable. The application also discloses a device and centrifuge for centrifuge temperature control.
Description
Technical Field
The present application relates to the technical field of centrifuge control, and for example, to a method and an apparatus for controlling temperature of a centrifuge, and a centrifuge.
Background
At present, with the development of medical and biological laboratories, more stringent requirements are put on the temperature control of laboratory centrifuges. In the related art, a system for controlling temperature of a centrifuge by using a variable frequency compressor is disclosed, which includes: a variable frequency compressor, a temperature sensor, a centrifuge control panel and the like; when the centrifuge works, if the temperature in the centrifuge cavity is close to the set temperature, the centrifuge control board adjusts the frequency of the compressor slowly according to the temperature in the centrifuge cavity detected by the temperature sensor, so that the temperature in the centrifuge cavity is close to the set temperature.
In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:
the conventional method has been described to slowly adjust the frequency of the compressor when the temperature is close to the set temperature, but a more specific temperature control method has not been provided.
Disclosure of Invention
The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.
The embodiment of the disclosure provides a method and a device for controlling the temperature of a centrifuge and the centrifuge, so as to provide a method for specifically controlling the temperature of the centrifuge by adopting a variable frequency compressor.
In some embodiments, the method comprises: determining a reference temperature ta(ii) a Detecting the temperature in the cavity of the centrifugal machine to obtain a temperature detection value tb(ii) a Calculating a temperature detection value tbWith a reference temperature taThe difference Δ t of (d); at the temperature detection value tbWith a reference temperature taAnd under the condition that the absolute value delta t of the difference value is greater than or equal to the preset threshold value, adjusting the rotating speed of the variable frequency compressor so as to enable the temperature in the cavity of the centrifugal machine to be close to the target temperature.
In some embodiments, the apparatus comprises: a processor and a memory storing program instructions, the processor being configured to, when executing the program instructions, perform the method for centrifuge temperature control described above.
In some embodiments, the centrifuge comprises: the refrigerating system comprises a compressor, an evaporator, a condenser and a thermal expansion valve, and the device for controlling the temperature of the centrifuge.
The method and the device for controlling the temperature of the centrifuge and the centrifuge provided by the embodiment of the disclosure can realize the following technical effects:
the method can adjust the rotating speed of the variable frequency compressor based on the temperature in the cavity of the centrifugal machine, so that the temperature in the cavity of the centrifugal machine is more stable.
The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:
FIG. 1 is a schematic diagram of a method for temperature control of a centrifuge provided by an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of another method for temperature control of a centrifuge provided by an embodiment of the present disclosure;
FIG. 3 is a schematic diagram of a method for adjusting a rotational speed of an inverter compressor according to an embodiment of the present disclosure;
FIG. 4 is a schematic diagram of another method for adjusting a rotational speed of an inverter compressor provided by an embodiment of the present disclosure;
FIG. 5 is a schematic diagram of an application provided by an embodiment of the present disclosure;
fig. 6 is a schematic diagram of an apparatus for controlling the temperature of a centrifuge according to an embodiment of the present disclosure.
Detailed Description
So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.
The terms "first," "second," and the like in the description and in the claims, and the above-described drawings of embodiments of the present disclosure, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the present disclosure described herein may be made. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.
The term "plurality" means two or more unless otherwise specified.
In the embodiment of the present disclosure, the character "/" indicates that the preceding and following objects are in an or relationship. For example, A/B represents: a or B.
The term "and/or" is an associative relationship that describes objects, meaning that three relationships may exist. For example, a and/or B, represents: a or B, or A and B.
The term "correspond" may refer to an association or binding relationship, and a corresponds to B refers to an association or binding relationship between a and B.
In the embodiment of the disclosure, the refrigerating system of the centrifuge comprises a refrigerant loop formed by sequentially connecting a compressor, an evaporator, a condenser and a thermostatic expansion valve. Wherein, the compressor is the inverter compressor.
Referring to fig. 1, an embodiment of the present disclosure provides a method for controlling temperature of a centrifuge, including:
s01, the centrifuge processor determines a reference temperature ta。
In the disclosed embodiment, the reference temperature taThe determination of (c) may be based on a target temperature setting, or may be based on a temperature setting within a centrifuge chamber.
S02, detecting the temperature in the cavity of the centrifuge by the temperature detection element to obtain a temperature detection value tb。
A temperature detection element, such as a temperature sensor, is arranged in the centrifuge cavity, detects the temperature in the centrifuge cavity, and transmits a detected temperature signal to the centrifuge processor so that the centrifuge processor obtains a temperature detection value tb。
S03, calculating the temperature detection value t by the centrifuge processorbWith a reference temperature taThe difference Δ t of (d).
And S04, when the absolute value of the difference value delta t is larger than or equal to the preset threshold value, the centrifuge processor adjusts the rotating speed of the variable frequency compressor so as to enable the temperature in the centrifuge cavity to approach the target temperature.
In the embodiment of the present disclosure, the preset threshold is a set value, for example, the preset threshold is 0.3 ℃. Then at tb-taWhen | -. DELTA t is not less than 0.3, i.e. tb-taNot less than 0.3 or tb-taAnd when the rotating speed is less than or equal to-0.3, adjusting the rotating speed of the variable frequency compressor. As an example, if tb-taAnd if the temperature in the cavity of the centrifugal machine rises more than or equal to 0.3, the rotating speed of the variable frequency compressor needs to be increased so as to reduce the temperature in the cavity of the centrifugal machine. Here, the rotational speed of the inverter compressor is increased, and the rotational speed of the inverter compressor can be increased at a certain adjustment speed. Alternatively, the inverter compressor speed may be directly adjusted to a higher speed. As another example, if tb-taLess than or equal to-0.3, the temperature in the chamber of the centrifuge is reduced rapidly. The rotating speed of the frequency conversion compressor needs to be reduced so as to improve the cavity of the centrifugal machineAnd (3) temperature. Likewise, the rotational speed of the inverter compressor may be reduced at a certain regulation speed, or the rotational speed of the inverter compressor may be directly regulated down to a lower rotational speed.
Understandably, at the temperature detection value tbWith a reference temperature taAnd under the condition that the absolute value of the difference value delta t is smaller than a preset threshold value, the centrifugal machine processor keeps the rotating speed of the variable-frequency compressor. When the absolute value of the difference value delta t is smaller than a preset threshold value, namely-0.3 < tb-ta< 0.3, indicating that the temperature variation is within a reasonable range. At this time, the rotation speed of the inverter compressor does not need to be adjusted.
By adopting the method for controlling the temperature of the centrifuge, which is provided by the embodiment of the disclosure, the rotating speed of the variable frequency compressor can be adjusted based on the temperature in the cavity of the centrifuge, so that the temperature in the cavity of the centrifuge is more stable.
Alternatively, in step S01, the temperature t is referred toaIs determined by:
judging whether the difference value between the current temperature in the cavity of the centrifugal machine and the target temperature is less than a first temperature and greater than a second temperature or not; if yes, taking the current cavity temperature of the centrifuge as the reference temperature ta。
In the embodiment of the disclosure, the first temperature and the second temperature are set as threshold temperatures for determining whether the temperature in the chamber of the centrifuge is close to a target temperature. The difference value between the current temperature in the cavity of the centrifuge and the target temperature is smaller than the first temperature and larger than the second temperature, which indicates that the temperature in the cavity of the centrifuge is close to the target temperature. Here, the values of the first temperature and the second temperature are set as required. For example, setting the temperature in the chamber of the centrifuge to T0Target temperature of TsThe first temperature is T1The second temperature is T2. Wherein the first temperature T1The value of 1.3 ℃, and the second temperature T2The value is-0.5 ℃. Then T is more than-0.50-TsAnd when the temperature is less than 1.3, the temperature in the cavity of the centrifugal machine is close to the target temperature.
Furthermore, reference temperature taIs a variation value, the difference between the current chamber temperature of the centrifuge and the target temperature is less than the first temperature and greater than the second temperatureAnd under the condition of the second temperature, taking the obtained current temperature in the cavity of the centrifugal machine as a reference temperature. Therefore, the temperature in the cavity of the centrifugal machine is detected in real time when the temperature in the cavity of the centrifugal machine is close to the target temperature. And comparing the temperature with a reference temperature, and determining whether the temperature change is within a preset threshold range according to the difference value of the two temperatures. Therefore, the rotating speed of the variable frequency compressor is adjusted to adjust the temperature, so that the temperature in the cavity of the centrifugal machine gradually approaches to the target temperature, and the condition that the temperature is over-adjusted or slowly adjusted due to the traditional adjusting mode is avoided.
Alternatively, in the case that the difference between the current cavity temperature of the centrifuge and the target temperature is less than the first temperature and greater than the second temperature, the steps S02 to S04 are periodically performed.
In the embodiment of the disclosure, the steps S02 to S04 are performed periodically, and the rotation speed of the compressor can be adjusted at a faster or slower adjustment speed according to the speed of the temperature change in the cavity. To improve the stability of temperature control. Here, the number of detection cycles is set according to the demand. In principle, the number of detection cycles is not less than 4 cycles, and for example, 5 detection cycles may be set.
In some embodiments, a preset duration is set, and the next steps are periodically executed within the preset duration. Here, the preset time period includes a plurality of detection periods, i.e., the preset time period is in a multiple relation with the detection periods. For example, the detection period is set to 2 seconds, and the preset time period is set to 10 seconds. The temperature in the chamber of the centrifuge is detected every 2 seconds for a preset time period of 10 seconds. Optionally, the preset duration includes more than 4 detection periods.
After the centrifuge adjusts the rotation speed, the temperature in the chamber of the centrifuge changes. Therefore, it is necessary to jump out of the cycle period to re-determine whether the temperature in the chamber of the centrifuge is less than the first temperature and greater than the second temperature. If so, the reference temperature is determined again and steps S02-S04 are performed periodically. When the absolute value of the difference value delta t is smaller than the preset threshold value, the rotating speed of the variable frequency compressor does not need to be adjusted. At this time, the temperature detection value t is continuously judged after the arrival of the next detection periodbWith a reference temperature taThe difference Δ t of (d). So that the absolute value at the difference Δ t is greater than or equal toAnd under the condition of a preset threshold value, adjusting the rotating speed of the variable frequency compressor in time.
Alternatively, the detection period is set to be plural, or steps S02 to S04 are periodically executed within a set time period.
In some embodiments, the detection period is set to 2 seconds, and the number of detection periods is set to 4 periods. Determining a reference temperature taThen, in the first detection period, obtaining the temperature detection value t of the temperature in the cavity of the centrifugal machineb. If the temperature detected value tbWith a reference temperature taThe absolute value of the difference value delta t is smaller than a preset threshold value, which indicates that the temperature change is in a reasonable range and the rotating speed of the variable frequency compressor does not need to be adjusted; waiting for the next detection period. If the absolute value of the difference value delta t is judged to be larger than or equal to the preset threshold value in the second detection period, the rotating speed of the compressor needs to be adjusted, and at the moment, the rotating speed of the compressor is adjusted. It is understood that when the absolute value of the difference value Δ t is smaller than the preset threshold, and the difference value between the chamber temperature of the centrifuge and the target temperature is smaller than the first temperature and larger than the second temperature, the chamber temperature is periodically and cyclically detected. Until the set detection times or the set time length are met. And when the absolute value of the difference value delta t is greater than or equal to a preset threshold value, adjusting the rotating speed of the variable-frequency compressor and jumping out of the cycle. It is determined whether the difference between the chamber temperature of the centrifuge and the target temperature satisfies the above condition again. Therefore, the rotating speed of the variable frequency compressor can be quickly or slowly adjusted according to the speed of temperature change by adopting multi-cycle nested temperature control. The temperature control of the centrifuge is realized, and the stability of temperature change is ensured.
Optionally, in step S04, the centrifuge processor adjusts a rotation speed of the inverter compressor, including:
at the temperature detection value tbGreater than the reference temperature taAnd under the condition that the rotating speed of the variable-frequency compressor is less than the first rotating speed, increasing the rotating speed of the variable-frequency compressor according to the set amplification. Or, at the temperature detection value tbLess than the reference temperature taAnd reducing the rotating speed of the variable frequency compressor according to the set amplitude under the condition that the rotating speed of the variable frequency compressor is greater than or equal to the second rotating speed. Wherein the first rotation speed is greater than the second rotation speed。
In the embodiment of the disclosure, the first rotation speed is a preset value, and is used for defining the critical condition of high rotation speed of the compressor. Here, the first rotation speed may take a value of 2800 rpm to 2950 rpm, and may take a value of 2950 rpm. The range of the set amplification or the set reduction is 40-80, the range can be 50, and the values of the set amplification or the set reduction can be different. The second rotation speed is a preset value and is used for defining the critical condition of the low rotation speed of the compressor. Here, the second rotation speed ranges from 1250 rpm to 1300 rpm, and may take 1250 rpm.
Temperature detection value tbWith a reference temperature taThe absolute value of the difference value delta t is greater than or equal to a preset threshold value, and the rotating speed of the variable frequency compressor is adjusted. And further judging whether the temperature in the cavity is in the temperature rising or cooling process, and further adjusting the rotating speed of the variable frequency compressor. Specifically, at the temperature detection value tbGreater than the reference temperature taIndicating that the temperature in the chamber is increasing. At this time, the rotation speed of the inverter compressor needs to be increased to reduce the temperature rising speed. And acquiring the current rotating speed of the compressor, and if the current rotating speed of the variable frequency compressor is less than the first rotating speed, indicating that the current rotating speed of the variable frequency compressor is low, and adjusting the rotating speed of the variable frequency compressor to increase the set rotating speed. At the temperature detection value tbLess than the reference temperature taTime, it indicates that the temperature in the chamber is decreasing. At this time, the rotational speed of the inverter compressor needs to be reduced. And further, acquiring the current rotating speed of the variable frequency compressor, and if the current rotating speed of the variable frequency compressor is greater than or equal to the second rotating speed. The current rotating speed of the variable frequency compressor is higher, and the rotating speed of the variable frequency compressor can be adjusted to be reduced. Like this, through inverter compressor frequency conversion control, realize the stability of centrifuge's strong adaptability on the one hand, on the other hand realizes the control of temperature, improves the stability of temperature.
Optionally, in step S04, the centrifuge processor adjusts a rotation speed of the inverter compressor, and further includes:
at the temperature detection value tbGreater than the reference temperature taAnd adjusting the inverter compressor to run at the highest rotating speed under the condition that the rotating speed of the inverter compressor is greater than or equal to the first rotating speed. Or, atTemperature detection value tbLess than the reference temperature taAnd under the condition that the rotating speed of the variable-frequency compressor is less than the second rotating speed, the variable-frequency compressor is adjusted to run at the lowest rotating speed.
In the embodiment of the disclosure, the temperature detection value tbGreater than the reference temperature taAnd the current rotating speed of the variable frequency compressor is greater than or equal to the first rotating speed. The temperature in the cavity is increasing, the current rotating speed of the variable frequency compressor is high, and the rotating speed increasing space is limited. In this case, the inverter compressor is controlled to operate at the maximum rotation speed to achieve temperature stability. Similarly, at the temperature detection value tbLess than the reference temperature taAnd the rotating speed of the variable frequency compressor is less than the second rotating speed. And when the temperature in the cavity is reduced and the current rotating speed of the variable frequency compressor is lower, controlling the variable frequency compressor to operate at the lowest rotating speed. The temperature stability is realized through the frequency reduction control of the variable frequency compressor; meanwhile, the energy is saved.
With reference to fig. 2, another method for controlling the temperature of a centrifuge is provided in an embodiment of the present disclosure, including:
and S15, when the difference between the current cavity temperature of the centrifuge and the target temperature is greater than or equal to the first temperature, or is less than or equal to the second temperature, the centrifuge processor adjusts the rotation speed of the variable frequency compressor according to the difference between the current cavity temperature of the centrifuge and the target temperature.
S01, in the case that the difference value between the current cavity temperature of the centrifuge and the target temperature is less than the first temperature and greater than the second temperature, the centrifuge processor determines the reference temperature ta。
S02, detecting the temperature in the cavity of the centrifuge by the temperature detection element to obtain a temperature detection value tb。
S03, calculating the temperature detection value t by the centrifuge processorbWith a reference temperature taThe difference Δ t of (d).
And S04, when the absolute value of the difference value delta t is larger than or equal to the preset threshold value, the centrifuge processor adjusts the rotating speed of the variable frequency compressor so as to enable the temperature in the cavity of the centrifuge to approach the target temperature.
In the embodiment of the disclosure, when the difference between the current cavity temperature of the centrifuge and the target temperature is greater than or equal to the first temperature, or is less than or equal to the second temperature, it indicates that the current cavity temperature of the centrifuge and the target temperature are far apart. And then the rotating speed of the variable frequency compressor is adjusted according to the difference value between the current temperature in the cavity of the centrifugal machine and the target temperature. Specifically, when the difference value between the current cavity temperature of the centrifuge and the target temperature is greater than or equal to the first temperature, the rotating speed of the variable frequency compressor is increased to a higher rotating speed. Or when the difference value between the current cavity temperature of the centrifugal machine and the target temperature is less than or equal to the second temperature, the rotating speed of the variable-frequency compressor is reduced to a lower rotating speed. In this way, a fast temperature regulation can be achieved, so that the temperature in the chamber of the centrifuge approaches the target temperature at a fast speed.
Optionally, as shown in fig. 3, in step S15, the adjusting, by the centrifuge processor, the rotation speed of the inverter compressor according to the difference between the current cavity temperature of the centrifuge and the target temperature includes:
s51, controlling the inverter compressor to run at the highest rotating speed by the centrifuge processor under the condition that the difference value between the temperature in the centrifuge cavity and the target temperature is greater than or equal to the first temperature; and S52, under the condition that the difference value between the temperature in the cavity of the centrifuge and the target temperature is less than or equal to the second temperature, the centrifuge processor adjusts the rotating speed of the variable frequency compressor according to the state of the centrifuge.
In the embodiment of the disclosure, when the current cavity temperature of the centrifuge and the target temperature are greater than or equal to the first temperature, it indicates that the current cavity temperature of the centrifuge is far higher than the target temperature. Therefore, in this case, the inverter compressor is controlled to operate at the highest rotation speed. The temperature in the centrifugal machine cavity is reduced to be close to the target temperature quickly, and quick response of the refrigeration temperature can be realized. And under the condition that the difference value between the temperature in the cavity of the centrifugal machine and the target temperature is less than or equal to the second temperature, adjusting the rotating speed of the variable-frequency compressor according to the state of the centrifugal machine. Specifically, when the centrifugal machine is in the working state, the variable frequency compressor is adjusted to run at a lower rotating speed. And in the stop state, the variable frequency compressor is adjusted to operate at the rotating speed before the stop.
In some embodiments, the experimental centrifuge is primarily used in low temperature environments. Therefore, at startup, the temperature in the centrifuge chamber is typically much higher than the target temperature. Therefore, when the compressor is started, the variable frequency compressor is controlled to run at the highest rotating speed. After the variable frequency compressor runs for a period of time at the highest rotating speed, the difference value between the temperature in the cavity of the centrifugal machine and the target temperature is smaller than or equal to a second temperature. And the temperature in the chamber of the centrifugal machine is reduced to a certain range below the target temperature, and the rotating speed of the variable frequency compressor is adjusted according to the state of the centrifugal machine.
Optionally, in step S52, the centrifuge processor adjusts the rotation speed of the inverter compressor according to the state of the centrifuge, including:
if the centrifuge is in a starting state for the first time, the centrifuge processor controls the variable frequency compressor to operate at the lowest rotating speed; and if the centrifuge is in a non-initial starting state, the centrifuge processor controls the variable frequency compressor to operate at the rotating speed before adjustment.
In the embodiment of the present disclosure, the first startup of the centrifuge means that the centrifuge is started after setting parameters when the centrifuge is used each time. After the variable frequency compressor runs for a period of time at the highest rotating speed and the temperature in the cavity of the centrifugal machine is reduced to a certain range below the target temperature, if the centrifugal machine is in a starting state for the first time, the variable frequency compressor is reduced to the lowest rotating speed to run. At the moment, the temperature in the centrifugal machine cavity is relatively low, and the variable frequency compressor can be controlled to operate at a low rotating speed. On the one hand, the temperature in the cavity can be maintained, and on the other hand, the energy conservation is facilitated. If the centrifuge is in a non-initial starting state, the centrifuge is suspended due to the fact that the temperature in the cavity of the centrifuge is too low. After the temperature is recovered to a certain temperature range, the variable frequency compressor is controlled to operate at the rotating speed before the shutdown. In this way, temperature stability is helped to be maintained.
Optionally, as shown in fig. 4, in step S15, the adjusting, by the centrifuge processor, the rotation speed of the inverter compressor according to the temperature in the centrifuge chamber includes:
and S53, when the difference between the current temperature in the cavity of the centrifuge and the target temperature is less than or equal to the second temperature and greater than the third temperature, the centrifuge processor keeps the rotating speed of the variable frequency compressor unchanged.
In the embodiment of the disclosure, when the difference between the current temperature in the cavity of the centrifuge and the target temperature is greater than the third temperature and less than or equal to the second temperature, the buffering stage of the centrifuge control is performed. The rotation speed is not required to be regulated in the stage, and the influence of refrigeration lag on a regulation mechanism can be prevented. After the current rotating speed of the variable frequency compressor is maintained, the temperature in the cavity of the centrifugal machine can be periodically detected under the condition that the difference value between the temperature in the cavity of the centrifugal machine and the target temperature is smaller than the first temperature and larger than the second temperature. And the rotating speed of the variable frequency compressor is adjusted according to the temperature change.
S54, controlling the frequency conversion compressor to stop by the centrifuge processor under the condition that the difference value between the current cavity temperature of the centrifuge and the target temperature is less than or equal to a third temperature; under the condition that the difference value between the temperature in the cavity of the centrifugal machine and the target temperature is greater than or equal to a first temperature, controlling the variable frequency compressor to start and operate at the rotating speed before the shutdown; wherein the third temperature is less than the second temperature.
In the embodiment of the disclosure, when the difference between the current cavity temperature of the centrifuge and the target temperature is less than or equal to the third temperature, it indicates that the cavity temperature of the centrifuge is far lower than the target temperature. Therefore, in this case, the inverter compressor is controlled to stop, so that the temperature in the chamber of the centrifuge is rapidly increased to approach the target temperature.
And after the frequency conversion compressor is stopped for a period of time, obtaining the temperature in the cavity of the centrifugal machine again. And if the difference value between the temperature in the cavity of the centrifugal machine and the target temperature is greater than or equal to the first temperature, indicating that the temperature in the cavity of the centrifugal machine is increased, and restoring the rotating speed of the variable frequency compressor to the rotating speed before adjustment. In this way, the influence of a delay in the cooling effect on the temperature regulation is avoided.
In practical applications, as shown in figure 5,
wherein the first temperature T1Value 1.3, second temperature T2Value 0.5, third temperature T3The value of-1.7, where T1、T2、T3The three temperatures are used for judging the difference condition of the temperature in the cavity of the centrifugal machine and the target temperature. T isSIs a target temperature, i isA preset number of detection cycles, where i is set equal to 4.
S401, operating a centrifugal machine;
s402, judging the temperature T in the cavity of the centrifugal machine0With a target temperature TSIs greater than or equal to the first temperature T1(ii) a If yes, executing S403, otherwise, executing S404;
s403, judging whether the inverter compressor is in an operating state, if so, executing S405; if not, go to step S406.
S404, judging whether the difference value between the temperature in the cavity of the centrifugal machine and the target temperature is less than or equal to a second temperature T2If yes, executing S407; if not, after delaying for a period of time, executing S404;
s405, controlling the variable frequency compressor to run at the highest rotating speed, wherein Ra is the rotating speed of the variable frequency compressor; then, S404 is executed;
s406, if the variable frequency compressor is shut down due to the fact that the temperature in the cavity is too low, controlling the variable frequency compressor to run at the rotating speed before the shutdown, and then executing S410; if the inverter compressor is stopped due to other reasons, controlling the inverter compressor to run at the highest rotating speed, and then executing S402;
s407, judging whether the centrifuge operates for the first time, if so, executing S408, otherwise, executing S409;
s408, controlling the inverter compressor to operate at the lowest rotating speed, and then executing S410;
s409, controlling the variable frequency compressor to operate at the rotating speed before adjustment, and then executing S410;
s410, judging whether the difference value between the temperature in the cavity of the centrifugal machine and the target temperature is greater than a second temperature T2And is less than the first temperature T1(ii) a If yes, go to S411; if not, after delaying for a period of time, executing S410;
s411, acquiring the temperature in the cavity of the centrifugal machine as a reference temperature value ta(ii) a Then, S412 is performed;
s412, periodically detecting the temperature in the cavity of the centrifuge to obtain a temperature detection value tb(ii) a Then, S413 is executed;
s413, judging the temperature detection value tbAnd a reference temperature value taDifference of (2)Whether the first threshold value is greater than or equal to a first threshold value, wherein the first threshold value is 0.3; if yes, go to S414; if not, go to S415;
s414, acquiring the rotating speed ra of the variable frequency compressor, and judging whether the current rotating speed is less than or equal to a first rotating speed, wherein the first rotating speed takes the value of 2950 revolutions per minute; if yes, go to S416; if not, executing S417;
s415, judging the temperature detection value tbAnd a reference temperature value taWhether the difference is less than or equal to a second threshold, wherein the second threshold takes a value of-0.3; if yes, go to S418; if not, executing S419;
s416, adjusting the rotating speed of the variable frequency compressor to increase the set rotating speed, wherein the set rotating speed takes 50 revolutions; the regulated rotating speed Ra of the variable frequency compressor is Ra + 50; then executing S402;
s417, controlling the inverter compressor to operate at the highest rotating speed; then executing S402;
s418, acquiring the rotating speed of the variable frequency compressor, and judging whether the rotating speed of the variable frequency compressor is greater than or equal to a second rotating speed, wherein the second rotating speed takes 1250 revolutions per minute; if yes, go to S420; if not, go to S421;
s419, judging whether the cavity temperature and the target temperature of the current centrifugal machine are higher than a second temperature and lower than a first temperature; if yes, go to S422; if not, executing S423;
s420, adjusting the rotating speed of the variable frequency compressor to reduce the set rotating speed, wherein the set rotating speed takes 50 revolutions; the regulated rotating speed Ra of the variable frequency compressor is Ra-50; then executing S402;
s421, controlling the inverter compressor to operate at the lowest rotating speed; then executing S402;
s422, judging whether the detection period is greater than or equal to a preset number of times, wherein the preset number of times is 4, if so, executing S410; if not, go to step S412;
s423; judging whether the current temperature in the cavity of the centrifugal machine and the target temperature are less than or equal to a third temperature T3Here, the third temperature takes the value of-1.7; if so; executing S424; if not, go to S402.
The disclosed embodiments provide a method forThe device for controlling the temperature of the centrifugal machine comprises a determining module, a detecting module, a calculating module and an adjusting module. The determination module is configured to determine the reference temperature ta. The detection module is configured to detect a temperature in the centrifuge chamber to obtain a temperature detection value tb. The calculation module is configured to calculate a temperature detection value tbWith a reference temperature taThe difference Δ t of (d). The adjusting module is configured to adjust the rotating speed of the variable frequency compressor to enable the temperature in the cavity of the centrifugal machine to be close to the target temperature under the condition that the absolute value of the delta t is larger than or equal to the preset threshold value.
Adopt the device for centrifuge temperature control that this disclosed embodiment provided, can be based on the rotational speed of centrifuge intracavity temperature regulation frequency conversion compressor to make centrifuge intracavity temperature more stable.
As shown in fig. 6, an embodiment of the present disclosure provides an apparatus for controlling temperature of a centrifuge, which includes a processor (processor)100 and a memory (memory) 101. Optionally, the apparatus may also include a Communication Interface (Communication Interface)102 and a bus 103. The processor 100, the communication interface 102, and the memory 101 may communicate with each other via a bus 103. The communication interface 102 may be used for information transfer. The processor 100 may invoke logic instructions in the memory 101 to perform the method for centrifuge temperature control of the above-described embodiments.
In addition, the logic instructions in the memory 101 may be implemented in the form of software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as independent products.
The memory 101, which is a computer-readable storage medium, may be used for storing software programs, computer-executable programs, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 100 executes functional applications and data processing, i.e., implements the method for centrifuge temperature control in the above-described embodiments, by executing program instructions/modules stored in the memory 101.
The memory 101 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal device, and the like. In addition, the memory 101 may include a high-speed random access memory, and may also include a nonvolatile memory.
The embodiment of the disclosure provides a centrifuge, which comprises the device for controlling the temperature of the centrifuge.
Embodiments of the present disclosure provide a storage medium having stored thereon computer-executable instructions configured to perform the above-described method for centrifuge temperature control.
The storage medium described above may be a transitory computer-readable storage medium or a non-transitory computer-readable storage medium.
The technical solution of the embodiments of the present disclosure may be embodied in the form of a software product, where the computer software product is stored in a storage medium and includes one or more instructions to enable a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method of the embodiments of the present disclosure. And the aforementioned storage medium may be a non-transitory storage medium comprising: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes, and may also be a transient storage medium.
The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. Furthermore, the words used in the specification are words of description only and are not intended to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Similarly, the term "and/or" as used in this application is meant to encompass any and all possible combinations of one or more of the associated listed. Furthermore, the terms "comprises" and/or "comprising," when used in this application, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Without further limitation, an element defined by the phrase "comprising an …" does not exclude the presence of other like elements in a process, method or apparatus that comprises the element. In this document, each embodiment may be described with emphasis on differences from other embodiments, and the same and similar parts between the respective embodiments may be referred to each other. For methods, products, etc. of the embodiment disclosures, reference may be made to the description of the method section for relevance if it corresponds to the method section of the embodiment disclosure.
Those of skill in the art would appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software may depend upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the disclosed embodiments. It can be clearly understood by the skilled person that, for convenience and brevity of description, the specific working processes of the system, the apparatus and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments disclosed herein, the disclosed methods, products (including but not limited to devices, apparatuses, etc.) may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units may be merely a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form. The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to implement the present embodiment. In addition, functional units in the embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. In the description corresponding to the flowcharts and block diagrams in the figures, operations or steps corresponding to different blocks may also occur in different orders than disclosed in the description, and sometimes there is no specific order between the different operations or steps. For example, two sequential operations or steps may in fact be executed substantially concurrently, or they may sometimes be executed in the reverse order, depending upon the functionality involved. Each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by special purpose hardware-based systems that perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
Claims (11)
1. A method for temperature control of a centrifuge, the centrifuge including a refrigeration system comprising a variable frequency compressor, an evaporator, a condenser, and a thermostatic expansion valve, the method comprising:
determining a reference temperature ta；
Detecting the temperature in the cavity of the centrifuge to obtain a temperature detection value tb；
Calculating a temperature detection value tbWith a reference temperature taThe difference Δ t of (d);
and under the condition that the absolute value of the delta t is greater than or equal to the preset threshold value, adjusting the rotating speed of the variable frequency compressor to enable the temperature in the cavity of the centrifugal machine to be close to the target temperature.
2. Method according to claim 1, characterized in that said determination of the reference temperature taThe method comprises the following steps:
judging whether the difference value between the current-stage cavity temperature of the centrifugal machine and the target temperature is less than a first temperature and greater than a second temperature or not;
if yes, taking the current cavity temperature of the centrifuge as the reference temperature ta。
3. The method of claim 2, wherein the temperature in the chamber of the centrifuge is periodically detected to obtain a temperature detection value tbAnd periodically adjusting the rotating speed of the variable frequency compressor.
4. The method of claim 1, wherein adjusting the rotational speed of the inverter compressor comprises:
at the temperature detection value tbGreater than the reference temperature taAnd increasing according to the set amplification under the condition that the rotating speed of the variable frequency compressor is less than the first rotating speedThe rotating speed of the variable frequency compressor; alternatively, the first and second electrodes may be,
at the temperature detection value tbLess than the reference temperature taAnd reducing the rotating speed of the variable frequency compressor according to the set amplitude reduction under the condition that the rotating speed of the variable frequency compressor is greater than or equal to the second rotating speed;
wherein the first rotational speed is greater than the second rotational speed.
5. The method of claim 4, further comprising:
at the temperature detection value tbGreater than the reference temperature taAnd when the rotating speed of the variable frequency compressor is greater than or equal to the first rotating speed, adjusting the variable frequency compressor to operate at the highest rotating speed; alternatively, the first and second electrodes may be,
at the temperature detection value tbLess than the reference temperature taAnd under the condition that the rotating speed of the variable-frequency compressor is less than the second rotating speed, the variable-frequency compressor is adjusted to run at the lowest rotating speed.
6. The method of any of claims 2 to 5, further comprising:
and under the condition that the difference value between the current cavity temperature of the centrifuge and the target temperature is greater than or equal to a first temperature or is less than or equal to a second temperature, adjusting the rotating speed of the variable frequency compressor according to the difference value between the current cavity temperature of the centrifuge and the target temperature.
7. The method of claim 6, wherein adjusting the rotational speed of the inverter compressor based on the difference between the current chamber temperature of the centrifuge and the target temperature comprises:
controlling the variable frequency compressor to run at the highest rotating speed under the condition that the difference value between the current temperature in the cavity of the centrifugal machine and the target temperature is greater than or equal to a first temperature; and the number of the first and second electrodes,
and under the condition that the difference value between the current temperature in the cavity of the centrifugal machine and the target temperature is less than or equal to the second temperature, adjusting the rotating speed of the variable-frequency compressor according to the state of the centrifugal machine.
8. The method of claim 7, wherein adjusting the rotational speed of the inverter compressor based on the state of the centrifuge comprises:
if the centrifuge is in a starting state for the first time, controlling the variable frequency compressor to operate at the lowest rotating speed;
and if the centrifuge is in a non-initial starting state, controlling the variable frequency compressor to operate at the rotating speed before adjustment.
9. The method of claim 6, wherein adjusting the rotational speed of the inverter compressor based on the current chamber temperature of the centrifuge comprises:
under the condition that the difference value between the current temperature in the cavity of the centrifugal machine and the target temperature is less than or equal to a second temperature and greater than a third temperature, keeping the rotating speed of the variable-frequency compressor unchanged; alternatively, the first and second electrodes may be,
controlling the variable frequency compressor to stop under the condition that the difference value between the current temperature in the cavity of the centrifugal machine and the target temperature is less than or equal to a third temperature; and the number of the first and second electrodes,
under the condition that the difference value between the current temperature in the cavity of the centrifugal machine and the target temperature is greater than or equal to a first temperature, controlling the variable frequency compressor to start and operating at the rotating speed before stopping;
wherein the third temperature is less than the second temperature.
10. An apparatus for centrifuge temperature control comprising a processor and a memory storing program instructions, characterized in that the processor is configured to perform a method for centrifuge temperature control according to any of claims 1 to 9 when executing the program instructions.
11. A centrifuge comprising a refrigeration system comprising a variable frequency compressor, an evaporator, a condenser and a thermostatic expansion valve, further comprising the apparatus for centrifuge temperature control of claim 10.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115338046A (en) * | 2022-07-21 | 2022-11-15 | 青岛海尔生物医疗科技有限公司 | Control method for centrifugal machine and centrifugal machine |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102728486A (en) * | 2011-04-15 | 2012-10-17 | 日立工机株式会社 | Centrifuge |
| CN104588221A (en) * | 2014-12-30 | 2015-05-06 | 上海力申科学仪器有限公司 | Fast temperature regulating mechanism for centrifugal machine |
| CN105020855A (en) * | 2015-07-24 | 2015-11-04 | 广东美的制冷设备有限公司 | Variable frequency air conditioner control method and system |
| DE102016220284A1 (en) * | 2015-10-20 | 2017-04-20 | Hangzhou Sanhua Home Appliance Thermal Management System Co., Ltd. | DRYING DEVICE, CONTROL PROCESS AND CONTROL SYSTEM FOR THE DRYING DEVICE |
| CN107013446A (en) * | 2017-04-25 | 2017-08-04 | 合肥华凌股份有限公司 | Control method, VFC plate and the refrigeration plant of frequency-changeable compressor |
| CN108343597A (en) * | 2018-01-19 | 2018-07-31 | 北京汽车研究总院有限公司 | A kind of compressor control method and device |
| CN112984720A (en) * | 2021-02-01 | 2021-06-18 | 青岛海尔空调器有限总公司 | Control method and device for air conditioner and air conditioner |
-
2021
- 2021-10-18 CN CN202111210161.XA patent/CN113909006B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102728486A (en) * | 2011-04-15 | 2012-10-17 | 日立工机株式会社 | Centrifuge |
| CN104588221A (en) * | 2014-12-30 | 2015-05-06 | 上海力申科学仪器有限公司 | Fast temperature regulating mechanism for centrifugal machine |
| CN105020855A (en) * | 2015-07-24 | 2015-11-04 | 广东美的制冷设备有限公司 | Variable frequency air conditioner control method and system |
| DE102016220284A1 (en) * | 2015-10-20 | 2017-04-20 | Hangzhou Sanhua Home Appliance Thermal Management System Co., Ltd. | DRYING DEVICE, CONTROL PROCESS AND CONTROL SYSTEM FOR THE DRYING DEVICE |
| CN107013446A (en) * | 2017-04-25 | 2017-08-04 | 合肥华凌股份有限公司 | Control method, VFC plate and the refrigeration plant of frequency-changeable compressor |
| CN108343597A (en) * | 2018-01-19 | 2018-07-31 | 北京汽车研究总院有限公司 | A kind of compressor control method and device |
| CN112984720A (en) * | 2021-02-01 | 2021-06-18 | 青岛海尔空调器有限总公司 | Control method and device for air conditioner and air conditioner |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115338046A (en) * | 2022-07-21 | 2022-11-15 | 青岛海尔生物医疗科技有限公司 | Control method for centrifugal machine and centrifugal machine |
| WO2024016734A1 (en) * | 2022-07-21 | 2024-01-25 | 青岛海尔生物医疗科技有限公司 | Control method for centrifuge and centrifuge |
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|---|---|
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