CN117469761A - Temperature control method and device for refrigeration equipment and computer storage medium - Google Patents
Temperature control method and device for refrigeration equipment and computer storage medium Download PDFInfo
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- CN117469761A CN117469761A CN202311390894.5A CN202311390894A CN117469761A CN 117469761 A CN117469761 A CN 117469761A CN 202311390894 A CN202311390894 A CN 202311390894A CN 117469761 A CN117469761 A CN 117469761A
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- 238000005057 refrigeration Methods 0.000 title claims abstract description 192
- 238000000034 method Methods 0.000 title claims abstract description 55
- 239000011159 matrix material Substances 0.000 claims abstract description 32
- 230000001174 ascending effect Effects 0.000 claims description 34
- 238000004590 computer program Methods 0.000 claims description 6
- 230000003247 decreasing effect Effects 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 8
- 239000000203 mixture Substances 0.000 description 7
- 239000003507 refrigerant Substances 0.000 description 7
- 230000000630 rising effect Effects 0.000 description 5
- 238000005070 sampling Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- KLDZYURQCUYZBL-UHFFFAOYSA-N 2-[3-[(2-hydroxyphenyl)methylideneamino]propyliminomethyl]phenol Chemical compound OC1=CC=CC=C1C=NCCCN=CC1=CC=CC=C1O KLDZYURQCUYZBL-UHFFFAOYSA-N 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 201000001098 delayed sleep phase syndrome Diseases 0.000 description 1
- 208000033921 delayed sleep phase type circadian rhythm sleep disease Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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- Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
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- Mathematical Physics (AREA)
- Thermal Sciences (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The embodiment of the disclosure provides a temperature control method, a temperature control device and a computer storage medium of refrigeration equipment, wherein the method comprises the following steps: acquiring a current return air temperature and a preset temperature; determining a current temperature difference value according to the current return air temperature and a preset temperature; determining a target temperature control domain according to the current temperature difference value and the refrigeration temperature control matrix; wherein the refrigeration temperature control matrix represents a logical relationship between at least one temperature difference interval and at least one temperature control domain; and controlling the refrigeration equipment to run refrigeration operation according to the current temperature control domain and the target temperature control domain. In this way, the embodiment of the disclosure judges the load state of the current environment by using the difference value between the current return air temperature and the preset temperature, and determines a proper temperature control domain by combining the refrigeration temperature control matrix, so that the refrigeration equipment correspondingly operates to different refrigeration grades, thereby realizing accurate temperature control, avoiding the situation that the actual temperature and the preset temperature differ too much, and meeting the actual refrigeration requirement.
Description
Technical Field
The present disclosure relates to the field of refrigeration technologies, and in particular, to a temperature control method, a temperature control device, and a computer storage medium for a refrigeration apparatus.
Background
The refrigeration equipment (such as an air conditioner) utilizes a refrigerant to realize refrigeration, specifically, when in refrigeration, the air conditioner compressor compresses the gaseous refrigerant into a high-temperature and high-pressure gaseous state, and sends the gaseous refrigerant to the condenser to be cooled, the gaseous refrigerant becomes a medium-temperature and high-pressure liquid refrigerant after cooling, the medium-temperature liquid refrigerant is throttled and depressurized by the expansion valve to become a low-temperature and low-pressure gas-liquid mixture, the low-temperature and low-pressure gas-liquid mixture is vaporized after absorbing heat in the air by the evaporator to become the gaseous state, and then the gaseous refrigerant returns to the compressor to be continuously compressed, and the circulation is continuously carried out for refrigeration. However, during the operation of the refrigeration equipment, if the temperature control manner is improper, the actual temperature may be too different from the set temperature, so that it is difficult to meet the actual refrigeration requirement.
Disclosure of Invention
The embodiment of the disclosure provides a temperature control method, a temperature control device and a computer storage medium of refrigeration equipment.
In a first aspect, an embodiment of the present disclosure provides a temperature control method of a refrigeration apparatus, including:
acquiring a current return air temperature and a preset temperature;
determining a current temperature difference value according to the current return air temperature and the preset temperature;
determining a target temperature control domain according to the current temperature difference value and the refrigeration temperature control matrix; wherein the refrigeration temperature control matrix represents a logical relationship between at least one temperature difference interval and at least one temperature control domain;
and controlling the refrigeration equipment to run refrigeration operation according to the current temperature control domain and the target temperature control domain.
In some embodiments, the determining the current temperature difference according to the current return air temperature and the preset temperature includes:
and performing subtraction operation on the current return air temperature and the preset temperature to obtain the current temperature difference value.
In some embodiments, the at least one temperature difference interval includes a hold interval without intersections, N positive difference intervals, and M negative difference intervals; wherein, the temperature difference value contained in the positive difference value interval is a positive value, and the values from the 1 st positive difference value interval to the N th positive difference value interval are sequentially increased; the temperature difference values contained in the negative difference value intervals are all negative values, and the values from the 1 st negative difference value interval to the M th negative difference value interval are sequentially reduced; the value of the left end point of the holding interval is the same as the value of the right end point of the 1 st negative difference interval, and the value of the right end point of the holding interval is the same as the value of the left end point of the 1 st positive difference interval;
the at least one temperature control domain includes 1 holding domain, N ascending domains, and M descending domains; the holding areas correspond to the preset holding areas, N positive difference areas correspond to N ascending areas one by one, and M negative difference areas correspond to M descending areas one by one;
wherein N and M are integers greater than 0.
In some embodiments, the determining the target temperature control domain according to the current temperature difference value and the refrigeration temperature control matrix includes:
if the current temperature difference value is in the holding interval, determining the holding domain as the target temperature control domain;
if the current temperature difference value is in the ith positive difference value interval, determining the ith ascending domain as the target temperature control domain; wherein i is an integer greater than 0 and less than or equal to N;
if the current temperature difference value is in the j-th negative difference value interval, determining the j-th descending domain as the target temperature control domain; wherein j is an integer greater than 0 and less than or equal to M.
In some embodiments, there is a preset energy level difference between two adjacent temperature control domains, and the preset energy level difference between any two adjacent temperature control domains is the same or different; the controlling the refrigeration equipment to run refrigeration operation according to the current temperature control domain and the target temperature control domain comprises the following steps:
if the current temperature control domain is the same as the target temperature control domain, determining the current temperature control domain as the holding domain, and controlling the refrigeration equipment to maintain the current refrigeration operation;
if the current temperature control domain is different from the target temperature control domain, determining an energy range accumulated value of the preset energy level difference between the current temperature control domain and the target temperature control domain; and on the basis of the refrigeration energy level of the current operation of the refrigeration equipment, increasing or reducing the refrigeration energy level of the refrigeration equipment according to the energy level difference accumulated value, and controlling the refrigeration equipment to execute refrigeration operation according to the increased or reduced refrigeration energy level.
In some embodiments, n=m=2, N of the ascending fields include a first ascending field and a fast ascending field, M of the descending fields include a first descending field and a fast descending field, and a preset energy level difference between each adjacent two temperature control fields is one level in the order of the fast descending field, the first descending field, the holding field, the first ascending field, and the fast ascending field.
In some embodiments, the refrigeration appliance includes a preset number of compressors, and the number of compressors in a refrigeration operation state is increased in the case of increasing the refrigeration energy level of the refrigeration appliance; in the case of decreasing the refrigerating energy level of the refrigerating apparatus, the number of compressors in the refrigerating operation state is decreased.
In some embodiments, after said controlling said refrigeration appliance to run a refrigeration operation according to a current temperature control domain and said target temperature control domain, said method further comprises:
and after the refrigerating operation is operated for a preset period, continuing to execute the step of acquiring the current return air temperature and the preset temperature.
In a second aspect, an embodiment of the present disclosure provides a temperature control apparatus, including an obtaining unit, a first determining unit, a second determining unit, and an operating unit, where:
the acquisition unit is configured to acquire the current return air temperature and the preset temperature;
the first determining unit is configured to determine a current temperature difference value according to the current return air temperature and the preset temperature;
the second determining unit is configured to determine a target temperature control domain according to the current temperature difference value and the refrigeration temperature control matrix; wherein the refrigeration temperature control matrix represents a logical relationship between at least one temperature difference interval and at least one temperature control domain;
the operation unit is configured to control the refrigeration equipment to operate refrigeration operation according to a current temperature control domain and the target temperature control domain.
In a third aspect, an embodiment of the present disclosure provides a computer storage medium, where a computer program is stored, where the computer program is executed by at least one processor to implement the temperature control method according to any one of the first aspects.
The embodiment of the disclosure provides a temperature control method, a temperature control device and a computer storage medium of refrigeration equipment, wherein the method comprises the following steps: acquiring a current return air temperature and a preset temperature; determining a current temperature difference value according to the current return air temperature and a preset temperature; determining a target temperature control domain according to the current temperature difference value and the refrigeration temperature control matrix; wherein the refrigeration temperature control matrix represents a logical relationship between at least one temperature difference interval and at least one temperature control domain; and controlling the refrigeration equipment to run refrigeration operation according to the current temperature control domain and the target temperature control domain. In this way, the embodiment of the disclosure judges the load state of the current environment by using the difference value between the current return air temperature and the preset temperature, and determines a proper temperature control domain by combining the refrigeration temperature control matrix, so that the refrigeration equipment correspondingly operates to different refrigeration grades, thereby realizing accurate temperature control, avoiding the situation that the actual temperature and the preset temperature differ too much, and meeting the actual refrigeration requirement.
Drawings
Fig. 1 is a schematic flow chart of a temperature control method of a refrigeration device according to an embodiment of the disclosure;
FIG. 2 is a schematic diagram I of a temperature control matrix according to an embodiment of the present disclosure;
FIG. 3 is a schematic diagram II of a temperature control matrix according to an embodiment of the disclosure;
fig. 4 is a schematic diagram of a composition structure of a temperature control device according to an embodiment of the disclosure;
fig. 5 is a schematic diagram of a composition structure of an electronic device according to an embodiment of the disclosure.
Detailed Description
The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure. It is to be understood that the specific embodiments described herein are merely illustrative of the related disclosure and not limiting thereof. It should be further noted that, for convenience of description, only the portions related to the disclosure are shown in the drawings.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used herein is for the purpose of describing embodiments of the present disclosure only and is not intended to be limiting of the present disclosure.
In the following description, reference is made to "some embodiments" which describe a subset of all possible embodiments, but it is to be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments and can be combined with one another without conflict.
It should be noted that the term "first\second\third" in relation to the embodiments of the present disclosure is merely to distinguish similar objects and does not represent a particular ordering for the objects, it being understood that the "first\second\third" may be interchanged in a particular order or sequencing where allowed, so that the embodiments of the present disclosure described herein may be implemented in an order other than that illustrated or described herein.
In the operation process of the refrigeration equipment, if the temperature control mode is improper, the actual temperature and the set temperature can be excessively different, and the actual refrigeration requirement is difficult to meet.
Based on this, the embodiment of the disclosure provides a temperature control method of a refrigeration device, which includes: acquiring a current return air temperature and a preset temperature; determining a current temperature difference value according to the current return air temperature and a preset temperature; determining a target temperature control domain according to the current temperature difference value and the refrigeration temperature control matrix; wherein the refrigeration temperature control matrix represents a logical relationship between at least one temperature difference interval and at least one temperature control domain; and controlling the refrigeration equipment to run refrigeration operation according to the current temperature control domain and the target temperature control domain. In this way, the embodiment of the disclosure judges the load state of the current environment by using the difference value between the current return air temperature and the preset temperature, and determines a proper temperature control domain by combining the refrigeration temperature control matrix, so that the refrigeration equipment correspondingly operates to different refrigeration grades, thereby realizing accurate temperature control, avoiding the situation that the actual temperature and the preset temperature differ too much, and meeting the actual refrigeration requirement.
Embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings.
In an embodiment of the present disclosure, referring to fig. 1, a schematic flow chart of a temperature control method of a refrigeration device according to an embodiment of the present disclosure is shown. As shown in fig. 1, the method may include:
s101: and acquiring the current return air temperature and the preset temperature.
It should be noted that, the temperature control method provided in this embodiment is used to accurately control the refrigeration process of the refrigeration equipment, such as an air conditioner, so as to ensure that the actual temperature control temperature is the same as or less than the required preset temperature, and achieve accurate temperature control. The method may be applied to a temperature control device or an electronic apparatus integrated with the temperature control device, where the electronic apparatus may be a refrigeration apparatus or a control apparatus for controlling the refrigeration apparatus, etc., which is not particularly limited.
The refrigeration device may perform refrigeration operations in various application scenarios, for example: rail transit vehicles (high-speed rail, subway, train, etc.), computer rooms, large or small offices, etc., which are not particularly limited.
It should also be noted that the current return air temperature is the current collected return air temperature. The return air temperature is the temperature of air sucked from the interior of the air conditioner indoor unit, and the preset temperature is the set temperature which is expected to be reached, for example, the preset temperature is 26 ℃.
In the operation process of the refrigeration equipment, the current return air temperature can be acquired in real time or at certain intervals in a preset period, and according to actual requirements, the preset temperature can be manually or automatically reset, so that the preset temperature can be acquired again while the current return air temperature is acquired, and the accuracy and reliability of the subsequent temperature control are ensured. The preset period of the interval may be a refrigerating period of a compressor of the refrigerating apparatus.
S102: and determining a current temperature difference value according to the current return air temperature and the preset temperature.
It should be noted that the current temperature difference represents how much the current return air temperature differs from the preset temperature, and based on this, it is determined how to perform the temperature control adjustment in the subsequent step. The current temperature difference may be a difference obtained by subtracting the preset temperature from the current return air temperature, or may be a difference obtained by subtracting the current return air temperature from the preset temperature, which is not limited in particular.
In this embodiment, taking the difference obtained by subtracting the preset temperature from the current return air temperature as an example. Thus, determining the current temperature difference from the current return air temperature and the preset temperature includes:
and performing subtraction operation on the current return air temperature and the preset temperature to obtain a current temperature difference value.
S103: and determining a target temperature control domain according to the current temperature difference value and the refrigeration temperature control matrix.
It should be noted that the refrigeration temperature control matrix represents a logical relationship between at least one temperature difference interval and at least one temperature control domain. The current temperature difference calculated in step S102 falls within a certain temperature difference interval, and thus a temperature control domain (i.e., a target temperature control domain) corresponding to the current temperature difference is determined.
For the refrigeration temperature control matrix, in some embodiments, at least one temperature difference interval includes a hold interval without intersections, N positive difference intervals, and M negative difference intervals; wherein, the temperature difference value contained in the positive difference value interval is a positive value, and the values from the 1 st positive difference value interval to the N th positive difference value interval are sequentially increased; the temperature differences contained in the negative difference intervals are all negative values, and the values from the 1 st negative difference interval to the M negative difference interval are sequentially reduced; the value of the left end point of the holding interval is the same as the value of the right end point of the 1 st negative difference interval, and the value of the right end point of the holding interval is the same as the value of the left end point of the 1 st positive difference interval;
the at least one temperature control domain includes a holding domain, N ascending domains, and M descending domains; the holding regions correspond to preset holding regions, N positive difference regions correspond to N ascending regions one by one, and M negative difference regions correspond to M descending regions one by one;
wherein N and M are integers greater than 0.
Reference is made to FIG. 2, which illustrates the provision of embodiments of the present disclosureA schematic diagram of a refrigeration temperature control matrix. As shown in fig. 2, the abscissa indicates that the temperature difference increases in order from left to right. On the right side of the origin of coordinates 0, n 1 、n 2 、n 3 、…、n N-1 、n N Are positive and increase in turn, m is on the left side of the origin of coordinates 0 1 、m 2 、m 3 、…、m M-1 、m M All negative and decreasing in sequence (the absolute value increases in sequence). It can be understood that at the left origin 0, the difference between the return air temperature and the preset temperature is 0, and at this time, the return air temperature is equal to the preset temperature, and at the right side of the left origin, the return air temperature is greater than the preset temperature, and the farther to the right from the coordinate origin, the greater the return air temperature; similarly, on the left side of the origin on the left side, the return air temperature is less than the preset temperature, and the farther the left is away from the origin of coordinates, the lower the return air temperature is.
As shown in FIG. 2, n is used 1 、n 2 、n 3 、…、n N-1 、n N M 1 、m 2 、m 3 、…、m M-1 、m M N+m+1 temperature difference intervals are separated. Here, in order to ensure accuracy, in the position where the end points of the adjacent temperature difference sections overlap, if one is an open section, the other is a closed section, and if one is a closed section, the other is an open section, so as to ensure that the current temperature difference value can fall within a certain temperature difference value section. On the premise of meeting the above end point requirements, each temperature difference section may be an open section, a closed section, a left open-right closed section, or a left open-right open section, which is not limited in any way.
It is also noted that m M 、m M-1 、…、m 3 、m 2 、m 1 、0、n 1 、n 2 、n 3 、…、n N-1 、n N The spaces may be equally spaced or unequally spaced, and are not particularly limited herein. In addition, n=m, M j ＝-n i Wherein i is an integer greater than 0 and less than or equal to N, j is an integer greater than 0 and less than or equal to M,or may be unequal, and is not limited in any way herein.
For example, as shown in fig. 2, the correspondence between each temperature control domain and the temperature difference interval may be: holding domain corresponds to a holding section (m 1 ，n 1 ) The method comprises the steps of carrying out a first treatment on the surface of the The corresponding relations between the N upgrading domains and the N positive difference value intervals are respectively as follows: the ascending domain 1 corresponds to the positive difference interval 1 (n 1 ，n 2 ]The step-up domain 2 corresponds to a positive difference interval 2 (n 2 ，n 3 ]…, the ascending domain N-1 corresponds to the positive difference interval N-1 (N N-1 ，n N ]The ascending field N corresponds to a positive difference interval (N N , +++, -infinity), it will be appreciated that the number of components, in reality the temperature difference will not reach infinity, an upper threshold may be set here instead of + -infinity); the corresponding relations between the M falling domains and the M negative difference intervals are respectively as follows: the falling domain 1 corresponds to a negative difference interval 1 (m 2 ，m 1 ]The falling field 2 corresponds to a negative difference interval 2 (m 3 ，m 2 ]…, fall-off region M-1 corresponds to a negative difference interval M-1 (M M ，m M-1 ]The falling field M corresponds to a negative difference interval M (- ≡m) M ) It can be appreciated that in reality the temperature difference will not reach infinity, and a lower threshold can be set instead of- ≡.
It should be further noted that, in the temperature control matrix, a preset energy level difference exists between two adjacent temperature control domains, and the preset energy level difference between any two adjacent temperature control domains is the same or different. In this embodiment, the same preset energy level difference between two adjacent temperature control domains is taken as an example.
Based on the temperature control matrix shown in fig. 2, in some embodiments, determining the target temperature control domain according to the current temperature difference and the refrigeration temperature control matrix may include:
if the current temperature difference value is in the holding interval, determining the holding domain as a target temperature control domain;
if the current temperature difference value is in the ith positive difference value interval, determining the ith upgrading domain (namely an upgrading domain i) as a target temperature control domain;
if the current temperature difference is within the j-th negative temperature difference interval, the j-th falling domain (i.e., the falling domain j) is determined as the target temperature control domain.
S104: and controlling the refrigeration equipment to run refrigeration operation according to the current temperature control domain and the target temperature control domain.
It should be noted that the current temperature control domain is the temperature control domain in which the refrigeration equipment is currently located.
In some embodiments, controlling the refrigeration appliance to run a refrigeration operation according to the current temperature control domain and the target temperature control domain includes:
if the current temperature control domain is the same as the target temperature control domain, determining to be a holding domain, and controlling the refrigeration equipment to maintain the current refrigeration operation;
if the current temperature control domain is different from the target temperature control domain, determining an energy range accumulated value of a preset energy level difference between the current temperature control domain and the target temperature control domain; and on the basis of the refrigeration energy level of the current operation of the refrigeration equipment, the refrigeration energy level of the refrigeration equipment is increased or reduced according to the accumulated energy level value, and the refrigeration equipment is controlled to execute refrigeration operation according to the increased or reduced refrigeration energy level.
For example: and if the current temperature difference value falls into the holding interval, determining the target temperature control domain as the holding domain, and if the current temperature control domain is also the holding domain, the refrigeration equipment does not need to change the refrigeration energy level, and continuously executing the refrigeration operation according to the current mode.
For another example, if the current temperature difference value falls within the positive difference value interval 2, the target temperature control domain is determined to be the ascending domain 2, if the current temperature control domain is the ascending domain 4, which indicates that the return air temperature has fallen to be closer to the preset temperature after the previous refrigeration cycle, at this time, the cooling speed can be slowed down, the refrigeration capacity of the refrigeration equipment is reduced, the energy level difference integrated value between the ascending domain 2 and the ascending domain 4 is 2, and then the refrigeration energy level of the refrigeration equipment is reduced by 2 levels.
For another example, if the current temperature difference value falls within the positive difference value interval 4, the target temperature control domain is determined to be the rising domain 4, and if the current temperature control domain is the rising domain 2, it is indicated that the return air temperature is not only reduced to be closer to the preset temperature but also increased after the previous refrigeration cycle, and at this time, the cooling speed can be increased, the refrigeration capacity is improved, and the energy level difference cumulative value between the rising domain 2 and the rising domain 4 is 2, and then the refrigeration energy level of the refrigeration equipment is increased by 2 levels.
It will be appreciated that the same is true for energy level variations between the falling domains, between the falling domains and the rising domains. It can be seen that, in this embodiment, the refrigeration energy levels of the refrigeration equipment are not corresponding to the temperature control domains, but the change logic of the refrigeration energy levels is performed under the condition of different temperature differences, so that the embodiment of the disclosure can continuously raise or lower the refrigeration energy levels of the refrigeration equipment under the condition that the current return air temperature and the preset temperature have a large difference, and can moderately raise or lower the refrigeration energy levels of the refrigeration equipment under the condition that the return air temperature and the preset temperature have a small difference, thereby ensuring that the refrigeration to the preset temperature is accurately realized.
Further, in some embodiments, the refrigeration device may include a preset number of compressors, and changing the refrigeration energy level of the refrigeration device may be implemented by changing the number of compressors in the refrigeration device that are in a refrigeration operation state, specifically: increasing the number of compressors in a refrigeration operating state while increasing the refrigeration energy level of the refrigeration equipment; in the case of lowering the refrigeration energy level of the refrigeration apparatus, the number of compressors in the refrigeration operation state is reduced. The relationship between the specific refrigeration level and the number of compressors may be determined in conjunction with the actual refrigeration performance of the compressors, and is not limited thereto.
In the embodiment of the present disclosure, the operation period of each refrigeration energy level is a preset period (i.e., the foregoing refrigeration period), as shown in fig. 1, after controlling the refrigeration device to operate the refrigeration operation according to the current temperature control domain and the target temperature control domain, the method may further include:
and after the preset period of the refrigeration operation is run, continuing to execute the step of acquiring the current return air temperature and the preset temperature.
After the energy level adjustment (or not adjustment) is performed according to the current temperature control domain and the target temperature control domain, after the preset period of the refrigeration operation is run according to the adjusted refrigeration energy level, whether the return air temperature meets the preset temperature is continuously monitored, and whether the refrigeration energy level of the refrigeration equipment needs to be adjusted again is further determined, so that the steps S101 to S104 are executed again.
In a specific implementation, taking n=m=2 as an example, referring to fig. 3, a schematic diagram ii of a temperature control matrix provided by an embodiment of the disclosure is shown. As shown in fig. 2, the N ascending fields include a first ascending field and a fast ascending field, the M descending fields include a first descending field and a fast descending field, and the energy level difference between every two adjacent temperature control fields is one level in the order of the fast descending field, the first descending field, the holding field, the first ascending field, and the fast ascending field.
As shown in fig. 3, the first Up-field is represented by the Up field, the fast Up-field is represented by the Sup field, the hold field is represented by the Keep field, the first DOWN-field is represented by the DOWN field, and the fast DOWN-field is represented by the SDOWN field. Illustratively, table 1 shows the values of A, B, C.
TABLE 1
| Control accuracy (. Degree.C) | A | B | C |
| ±1 | 0.8 | 0.5 | 0.2 |
As shown in table 1, the length of the holding section is set to be larger (0.8 ℃), the length of the positive difference section 1 corresponding to the first ascending domain and the length of the negative difference section 1 corresponding to the first descending domain are set to be smaller (0.5 ℃), the length of the positive difference section 2 corresponding to the rapid ascending domain and the length of the negative difference section 2 corresponding to the rapid descending domain are set to be minimum (0.2 ℃), which accords with the actual temperature change rule, and is beneficial to furthest exerting the refrigerating effect of the refrigerating equipment.
As shown in fig. 3, it is assumed that the operation adjustment period of each refrigeration level of the compressor is 14 seconds (i.e., the aforementioned preset period, the following sampling period):
sup domain (fast ramp domain): when entering the area from the Keep domain, the refrigerating energy level of the compressor rises by 2 levels, the sampling period of the area is operated, the time overflows, and the judgment is carried out again;
up field (upscaled field): when entering the field from the Sup field or the Keep field, the refrigerating energy level of the compressor descends or ascends by 1 level, the sampling period of the field is operated, the time overflows, and the judgment is carried out again;
keep domain: maintaining a current refrigeration energy level of the compressor;
DOWN domain (DOWN domain): when entering the field from the Keep domain or the SDOWN domain, the refrigerating energy level of the compressor descends or ascends by 1 level, the sampling period of the field is operated, the time overflows, and the judgment is carried out again;
SDOWN domain (fast descent domain): when the Keep domain enters the area, the refrigerating energy level of the compressor is reduced by 2 levels, the sampling period of the area is operated, the time overflows, and the judgment is carried out again.
Two independent refrigerating systems are arranged in one air conditioning unit, and each refrigerating system comprises 2 compressors as an example. By controlling the start-stop of the compressor to adjust the refrigeration output capacity, a total of 4 refrigeration levels of C1-C4 as shown in table 2 can be achieved.
TABLE 2
Wherein, ON represents that the compressor is ON and is in a refrigeration working state, and OFF represents that the compressor is OFF.
Taking an air conditioner applied to a rail transit vehicle as an example, when the actual temperature (Tr) in a passenger room is lower than the preset temperature (Tic) A/2 ℃, the refrigerating energy level of the compressor is reduced by 1 level, the compressor enters a DOWN region, and if the temperature is continuously reduced and is lower than the set temperature (A/2+B+C) DEG C, the refrigerating energy level of the compressor is reduced by 2 level, and the compressor enters the SDOWN region; conversely, when the indoor actual temperature (Tr) and the temperature (Tic) are higher than the preset temperature (A/2 ℃, the refrigerating energy level of the compressor rises by 1 level, the compressor enters the Up domain, and when the temperature continues to rise and is higher than the set temperature (A/2+B+C), the refrigerating energy level of the compressor rises by 2 level, and the compressor enters the Sup domain. That is, if the actual temperature (Tr) in the passenger compartment is relatively close to the preset temperature (Tic), the refrigerating energy level may not be changed; if the phase difference is not great, only the 1-level refrigeration energy level can be adjusted; if the phase difference is large, adjusting the 2-level refrigeration energy level; thereby ensuring that the actual temperature is accurately controlled to be consistent with the preset temperature in different temperature intervals.
It will be appreciated that the fields of fig. 2 and 3 represent a logic for varying the refrigeration level according to the magnitude of the difference between the return air temperature and the predetermined temperature, and that the refrigeration level increases or decreases by a level according to the difference between the return air temperature and the predetermined temperature for each field. The refrigeration levels of fig. 3 and table 2 are not in a one-to-one correspondence, for example: assuming that ventilation is performed now, the system monitors that the current return air temperature is higher than the preset temperature (A/2+B+C), then enters the Sup domain, ventilation is changed into C2, after a preset period of 14S, the sampled current return air temperature is still higher than the preset temperature (A/2+B+C), then enters the Sup domain again (because the Sup domain is the highest ascending domain, the Sup domain can be entered again by the Keep domain under the condition that the temperature is always high, the refrigerating effect is ensured), and the refrigeration temperature control is realized by changing C2 into C4.
The embodiment of the disclosure provides an air conditioner temperature control logic, which judges the current load state in a vehicle by using the difference between the current return air temperature and the preset temperature of a passenger room, and enables an air conditioner unit to operate to different refrigeration energy levels by controlling the start and stop of a compressor or the output of cold according to a refrigeration temperature control matrix, so that the accurate control of the temperature of the passenger room is realized, and the situation that the difference between the actual temperature and the target temperature in the vehicle is too large is avoided.
In another embodiment of the present disclosure, referring to fig. 4, a schematic diagram of a composition structure of a temperature control device 40 according to an embodiment of the present disclosure is shown. As shown in fig. 4, the temperature control device 40 includes an acquisition unit 401, a first determination unit 402, a second determination unit 403, and an operation unit 404, wherein:
an obtaining unit 401 configured to obtain a current return air temperature and a preset temperature;
a first determining unit 402 configured to determine a current temperature difference according to a current return air temperature and a preset temperature;
a second determining unit 403 configured to determine a target temperature control domain according to the current temperature difference and the refrigeration temperature control matrix; wherein the refrigeration temperature control matrix represents a logical relationship between at least one temperature difference interval and at least one temperature control domain;
an operation unit 404 configured to control the refrigeration appliance to operate a refrigeration operation according to the current temperature control domain and the target temperature control domain.
In some embodiments, the first determining unit 402 is specifically configured to perform a subtraction operation on the current return air temperature and the preset temperature to obtain the current temperature difference value.
In some embodiments, the second determining unit 403 is specifically configured to determine the holding domain as the target temperature control domain if the current temperature difference value is within the holding interval; if the current temperature difference value is in the ith positive difference value interval, determining the ith ascending domain as the target temperature control domain; wherein i is an integer greater than 0 and less than or equal to N; if the current temperature difference value is in the j-th negative difference value interval, determining the j-th descending domain as the target temperature control domain; wherein j is an integer greater than 0 and less than or equal to M.
In some embodiments, the running unit 404 is specifically configured to determine that the current temperature control domain is the same as the target temperature control domain, and control the refrigeration device to maintain the current refrigeration operation;
if the current temperature control domain is different from the target temperature control domain, determining an energy range accumulated value of the preset energy level difference between the current temperature control domain and the target temperature control domain; and on the basis of the refrigeration energy level of the current operation of the refrigeration equipment, increasing or reducing the refrigeration energy level of the refrigeration equipment according to the energy level difference accumulated value, and controlling the refrigeration equipment to execute refrigeration operation according to the increased or reduced refrigeration energy level.
In some embodiments, the obtaining unit 401 is further configured to continue to perform the step of obtaining the current return air temperature and the preset temperature after running the preset period of the cooling operation.
It should be noted that, the temperature control device provided in this embodiment is used to implement the temperature control method in the foregoing embodiment, and details not disclosed in this embodiment are understood by referring to the description of the foregoing embodiment.
It will be appreciated that in this embodiment, the "unit" may be a part of a circuit, a part of a processor, a part of a program or software, etc., and may of course be a module, or may be non-modular. Furthermore, the components in the present embodiment may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional modules.
The integrated units, if implemented in the form of software functional modules, may be stored in a computer-readable storage medium, if not sold or used as separate products, and based on such understanding, the technical solution of the present embodiment may be embodied essentially or partly in the form of a software product, which is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) or processor to perform all or part of the steps of the method described in the present embodiment. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
Accordingly, the present embodiment provides a computer storage medium storing a computer program which, when executed by at least one processor, implements the steps of the temperature control method of any of the preceding embodiments.
Based on the above-mentioned composition of the temperature control device 40 and the computer storage medium, referring to fig. 5, a schematic diagram of the composition structure of an electronic device 50 according to an embodiment of the present application is shown. As shown in fig. 5, may include: a communication interface 501, a memory 502 and a processor 503; the various components are coupled together by a bus system 504. It is to be appreciated that bus system 504 is employed to enable connected communications between these components. The bus system 504 includes a power bus, a control bus, and a status signal bus in addition to the data bus. But for clarity of illustration, the various buses are labeled as bus system 504 in fig. 5. The communication interface 501 is configured to receive and send signals in a process of receiving and sending information with other external network elements;
a memory 502 for storing a computer program capable of running on the processor 503;
a processor 503, configured to execute the temperature control method according to the foregoing embodiment when the computer program is executed.
It should be noted that, the electronic device 50 may be the foregoing refrigeration device, so the electronic device 50 further includes a preset number of compressors and other components, or the electronic device 50 is a control device for controlling the foregoing refrigeration device, which is not limited in particular.
It is to be appreciated that the memory 502 in embodiments of the present application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (Double Data Rate SDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), and Direct memory bus RAM (DRRAM). The memory 502 of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.
And the processor 503 may be an integrated circuit chip with signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuitry of hardware in the processor 503 or instructions in the form of software. The processor 503 may be a general purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present application may be embodied directly in hardware, in a decoded processor, or in a combination of hardware and software modules in a decoded processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in the memory 502, and the processor 503 reads the information in the memory 502, and in combination with its hardware, performs the steps of the above method.
It is to be understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or a combination thereof. For a hardware implementation, the processing units may be implemented within one or more application specific integrated circuits (Application Specific Integrated Circuits, ASIC), digital signal processors (Digital Signal Processing, DSP), digital signal processing devices (DSP devices, DSPD), programmable logic devices (Programmable Logic Device, PLD), field programmable gate arrays (Field-Programmable Gate Array, FPGA), general purpose processors, controllers, microcontrollers, microprocessors, other electronic units configured to perform the functions described herein, or a combination thereof.
For a software implementation, the techniques described herein may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described herein. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.
The foregoing description is only of the preferred embodiments of the present disclosure, and is not intended to limit the scope of the present disclosure.
It should be noted that in this disclosure, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing embodiment numbers of the present disclosure are merely for description and do not represent advantages or disadvantages of the embodiments.
The methods disclosed in the several method embodiments provided in the present disclosure may be arbitrarily combined without collision to obtain a new method embodiment.
The features disclosed in the several product embodiments provided in the present disclosure may be combined arbitrarily without conflict to obtain new product embodiments.
The features disclosed in the several method or apparatus embodiments provided in the present disclosure may be arbitrarily combined without any conflict to obtain new method embodiments or apparatus embodiments.
The foregoing is merely specific embodiments of the disclosure, but the protection scope of the disclosure is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the disclosure, and it is intended to cover the scope of the disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.
Claims (10)
1. A method of controlling temperature of a refrigeration appliance, the method comprising:
acquiring a current return air temperature and a preset temperature;
determining a current temperature difference value according to the current return air temperature and the preset temperature;
determining a target temperature control domain according to the current temperature difference value and the refrigeration temperature control matrix; wherein the refrigeration temperature control matrix represents a logical relationship between at least one temperature difference interval and at least one temperature control domain;
and controlling the refrigeration equipment to run refrigeration operation according to the current temperature control domain and the target temperature control domain.
2. The method of claim 1, wherein said determining a current temperature difference based on said current return air temperature and said preset temperature comprises:
and performing subtraction operation on the current return air temperature and the preset temperature to obtain the current temperature difference value.
3. The method of claim 2, wherein the at least one temperature difference interval comprises an intersection-free hold interval, N positive difference intervals, and M negative difference intervals; wherein, the temperature difference value contained in the positive difference value interval is a positive value, and the values from the 1 st positive difference value interval to the N th positive difference value interval are sequentially increased; the temperature difference values contained in the negative difference value intervals are all negative values, and the values from the 1 st negative difference value interval to the M th negative difference value interval are sequentially reduced; the value of the left end point of the holding interval is the same as the value of the right end point of the 1 st negative difference interval, and the value of the right end point of the holding interval is the same as the value of the left end point of the 1 st positive difference interval;
the at least one temperature control domain includes 1 holding domain, N ascending domains, and M descending domains; the holding areas correspond to the preset holding areas, N positive difference areas correspond to N ascending areas one by one, and M negative difference areas correspond to M descending areas one by one;
wherein N and M are integers greater than 0.
4. A method according to claim 3, wherein said determining a target temperature control domain based on said current temperature difference and a refrigeration temperature control matrix comprises:
if the current temperature difference value is in the holding interval, determining the holding domain as the target temperature control domain;
if the current temperature difference value is in the ith positive difference value interval, determining the ith ascending domain as the target temperature control domain; wherein i is an integer greater than 0 and less than or equal to N;
if the current temperature difference value is in the j-th negative difference value interval, determining the j-th descending domain as the target temperature control domain; wherein j is an integer greater than 0 and less than or equal to M.
5. A method according to claim 3, wherein there is a preset energy level difference between two adjacent temperature control domains, and the preset energy level difference between any two adjacent temperature control domains is the same or different; the controlling the refrigeration equipment to run refrigeration operation according to the current temperature control domain and the target temperature control domain comprises the following steps:
if the current temperature control domain is the same as the target temperature control domain, determining the current temperature control domain as the holding domain, and controlling the refrigeration equipment to maintain the current refrigeration operation;
if the current temperature control domain is different from the target temperature control domain, determining an energy range accumulated value of the preset energy level difference between the current temperature control domain and the target temperature control domain; and on the basis of the refrigeration energy level of the current operation of the refrigeration equipment, increasing or reducing the refrigeration energy level of the refrigeration equipment according to the energy level difference accumulated value, and controlling the refrigeration equipment to execute refrigeration operation according to the increased or reduced refrigeration energy level.
6. A method according to claim 3, wherein N = M = 2, N said ascending fields comprise a first ascending field and a fast ascending field, M said descending fields comprise a first descending field and a fast descending field, and the preset energy level difference between each adjacent two temperature control fields is one level in the order of said fast descending field, said first descending field, said holding field, said first ascending field, said fast ascending field.
7. The method of claim 5, wherein the refrigeration appliance includes a predetermined number of compressors, and wherein the number of compressors in a refrigeration mode is increased upon increasing the refrigeration level of the refrigeration appliance; in the case of decreasing the refrigerating energy level of the refrigerating apparatus, the number of compressors in the refrigerating operation state is decreased.
8. The method of any of claims 1 to 7, further comprising, after said controlling the refrigeration appliance to run a refrigeration operation according to a current temperature control domain and the target temperature control domain:
and after the refrigerating operation is operated for a preset period, continuing to execute the step of acquiring the current return air temperature and the preset temperature.
9. The temperature control device is characterized by comprising an acquisition unit, a first determination unit, a second determination unit and an operation unit, wherein:
the acquisition unit is configured to acquire the current return air temperature and the preset temperature;
the first determining unit is configured to determine a current temperature difference value according to the current return air temperature and the preset temperature;
the second determining unit is configured to determine a target temperature control domain according to the current temperature difference value and the refrigeration temperature control matrix; wherein the refrigeration temperature control matrix represents a logical relationship between at least one temperature difference interval and at least one temperature control domain;
the operation unit is configured to control the refrigeration equipment to operate refrigeration operation according to a current temperature control domain and the target temperature control domain.
10. A computer storage medium, characterized in that it stores a computer program which, when executed by at least one processor, implements the temperature control method according to any one of claims 1 to 8.
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