CN117968268A - Heat pipe compression composite refrigeration system and control method and control device thereof - Google Patents
Heat pipe compression composite refrigeration system and control method and control device thereof Download PDFInfo
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- CN117968268A CN117968268A CN202311804383.3A CN202311804383A CN117968268A CN 117968268 A CN117968268 A CN 117968268A CN 202311804383 A CN202311804383 A CN 202311804383A CN 117968268 A CN117968268 A CN 117968268A
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- 238000005057 refrigeration Methods 0.000 title claims abstract description 171
- 230000006835 compression Effects 0.000 title claims abstract description 142
- 238000007906 compression Methods 0.000 title claims abstract description 142
- 239000002131 composite material Substances 0.000 title claims abstract description 120
- 238000000034 method Methods 0.000 title claims abstract description 28
- 230000007613 environmental effect Effects 0.000 claims abstract description 30
- 239000003507 refrigerant Substances 0.000 claims description 100
- 150000001875 compounds Chemical class 0.000 claims description 16
- 238000010586 diagram Methods 0.000 description 10
- 230000001276 controlling effect Effects 0.000 description 6
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 5
- 229910052731 fluorine Inorganic materials 0.000 description 5
- 239000011737 fluorine Substances 0.000 description 5
- 238000001704 evaporation Methods 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The invention discloses a heat pipe compression composite refrigeration system, a control method and a control device thereof, wherein the control method comprises the following steps: acquiring environmental parameters of an area where a heat pipe compression composite refrigeration system is located; determining an operation mode of the heat pipe compression composite refrigeration system according to the environmental parameters; and controlling the operation of the heat pipe compression composite refrigeration system according to the operation mode. The invention solves the problem of low system energy efficiency caused by unmatched operation mode and actual load of the heat pipe compression composite refrigeration system in the prior art, and improves the operation energy efficiency of the heat pipe and the compression refrigeration composite system.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a heat pipe compression composite refrigeration system, a control method and a control device thereof.
Background
The scale of the data center is increased stably, the energy efficiency is improved, the design and the selection of a cooling system of the data center are important factors influencing the energy consumption level, the existing air conditioning system of the data center is various, the air conditioning system of the data center comprises a vapor compression refrigerating system, a water system, a heat pipe system and a vapor compression and heat pipe composite refrigerating system, the temperature of the data center is always at a higher level, the external environment temperature is changed continuously along with seasons and day-to-day alternation, the vapor compression refrigerating system is needed to supply cold for the data center when the data center is in summer, the heat pipe can meet the refrigerating requirement of the data center in spring and autumn transitional seasons when the temperature difference between the inside and outside is larger, and the refrigerating requirement of the whole day and whole season can be basically met in winter.
The heat pipe compression composite refrigerating system at the present stage mainly comprises a heat pipe system and a compression refrigerating system which are independently combined, and the independent operation or the combined operation of the refrigerating system is realized through a shared heat exchange module in the season replacement process, so that the system is simple to control, but the front-stage product input cost of the scheme comprises two sets of systems, the installation space requirement is larger, the shared heat exchange module is used for the refrigerating system, the windage is improved, the performance requirement on a fan is higher, and the energy loss is improved, so that the whole energy efficiency level is reduced.
Meanwhile, the heat pipe compression composite refrigeration system in the prior art generally does not consider the current environmental change according to the operation mode of the seasonal adjustment system, and extreme weather phenomena such as low-temperature weather in summer and high-temperature weather in winter can also exist in actual use, so that the scheme of switching the operation mode according to seasons in the prior art is not suitable for all weather in the current season, especially in the season change stage. And because of regional differences, the operation modes applicable to each season in different regions are also different, so that the operation modes are not matched with the actual environment.
Aiming at the problem of low energy efficiency of a system caused by unmatched operation mode and actual load of a heat pipe compression composite refrigeration system in the related technology, an effective solution is not proposed at present.
Disclosure of Invention
The invention provides a heat pipe compression composite refrigeration system, a control method and a control device thereof, which at least solve the problem of low energy efficiency of the system caused by unmatched operation mode and actual load of the heat pipe compression composite refrigeration system in the prior art.
In order to solve the above technical problems, according to an aspect of an embodiment of the present invention, there is provided a control method of a heat pipe compression composite refrigeration system, applied to a heat pipe compression composite refrigeration system, the method including: acquiring environmental parameters of an area where a heat pipe compression composite refrigeration system is located; determining an operation mode of the heat pipe compression composite refrigeration system according to the environmental parameters; and controlling the operation of the heat pipe compression composite refrigeration system according to the operation mode.
Further, the environmental parameters include at least an indoor environmental temperature and an outdoor environmental temperature; determining an operating mode of the heat pipe compression composite refrigeration system according to the environmental parameter, comprising: calculating the temperature difference between the indoor environment temperature and the outdoor environment temperature; and determining the operation mode of the heat pipe compression composite refrigeration system according to the temperature difference.
Further, the operation modes include at least: a compression refrigeration mode, a compound operation mode and a heat pipe refrigeration mode; determining an operating mode of the heat pipe compression composite refrigeration system according to the temperature difference, comprising: when the temperature difference is larger than a first preset temperature difference, determining that the operation mode of the heat pipe compression composite refrigeration system is a compression refrigeration mode; when the temperature difference is larger than the second preset temperature difference and smaller than the first preset temperature difference, determining that the operation mode of the heat pipe compression composite refrigeration system is a composite operation mode; when the temperature difference is larger than a second preset temperature difference, determining that the operation mode of the heat pipe compression composite refrigeration system is a heat pipe refrigeration mode; wherein the second preset temperature difference is greater than the first preset temperature difference.
Further, controlling operation of the heat pipe compression composite refrigeration system according to the operation mode includes: when the operation mode of the heat pipe compression composite refrigeration system is determined to be a composite operation mode or the operation mode of the heat pipe compression composite refrigeration system is determined to be a heat pipe refrigeration mode, determining the refrigerant filling rate of the heat pipe compression composite refrigeration system according to the temperature difference before the heat pipe system of the heat pipe compression composite refrigeration system is started; and carrying out refrigerant filling on the heat pipe system according to the refrigerant filling rate.
Further, the refrigerant filling of the heat pipe system according to the refrigerant filling rate comprises: determining the refrigerant pressure of the heat pipe system; and (5) carrying out refrigerant filling on the heat pipe system according to the pressure of the refrigerant.
Further, determining the refrigerant filling rate of the heat pipe system according to the temperature difference includes: acquiring a corresponding relation table of a preset temperature difference and a refrigerant charging rate range; wherein, the larger the temperature difference is, the smaller the refrigerant filling rate range is; determining a refrigerant charging rate range corresponding to the temperature difference according to the corresponding relation table; acquiring system parameters of a heat pipe system; and determining the optimal refrigerant filling rate within the refrigerant filling rate range according to the system parameters.
Further, the system parameters at least comprise the evaporator volume and the refrigerant saturation density corresponding to the indoor environment temperature; determining an optimal refrigerant filling rate within a refrigerant filling rate range according to system parameters, comprising: acquiring a fitting relation between system parameters and an optimal refrigerant filling rate; and determining the optimal refrigerant filling rate corresponding to the system parameters according to the fitting relation.
According to another aspect of the embodiment of the present invention, there is provided a control device for a heat pipe compression composite refrigeration system, which is applied to a heat pipe compression composite refrigeration system, the device including: the acquisition module is used for acquiring environmental parameters of the area where the heat pipe compression composite refrigeration system is located; the determining module is used for determining the operation mode of the heat pipe compression composite refrigeration system according to the environmental parameters; and the control module is used for controlling the operation of the heat pipe compression composite refrigeration system according to the operation mode.
According to still another aspect of the embodiment of the present invention, there is provided a heat pipe compression composite refrigeration system, including a heat pipe compression composite refrigeration system control device as described above.
According to yet another aspect of embodiments of the present invention, there is provided a storage medium containing computer executable instructions for performing a heat pipe compression compound refrigeration system control method as described above when executed by a computer processor.
The invention provides a control scheme of a heat pipe and compression refrigeration composite system, which is used for judging the matching relation between the current refrigeration load and the refrigeration system by detecting the temperature of the inner ring and the outer ring, so as to realize the matching of different refrigeration modes and the current load, effectively solve the problem of low energy efficiency of the system caused by the mismatching of the operation mode and the actual load of the heat pipe compression composite refrigeration system in the prior art, and further improve the operation energy efficiency of the heat pipe and the compression refrigeration composite system.
Drawings
FIG. 1 is a schematic diagram of an alternative construction of a heat pipe compression compound refrigeration system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an alternative refrigerant flow path for a compression refrigeration mode of a heat pipe compression compound refrigeration system according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of an alternative refrigerant flow path for a compound mode of operation of a heat pipe compression compound refrigeration system according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of an alternative refrigerant flow path for a heat pipe refrigeration mode of a heat pipe compression compound refrigeration system according to an embodiment of the present invention;
FIG. 5 is an alternative flow chart of a method of controlling a heat pipe compression compound refrigeration system according to an embodiment of the present invention;
fig. 6 is a block diagram of an alternative configuration of a heat pipe compression compound refrigeration system control device according to an embodiment of the present invention.
Reference numerals illustrate:
1. a compressor; 2. a compressor condenser; 3. a reservoir; 4. an electronic expansion valve; 5. an electromagnetic valve; 6. an electromagnetic valve; 7. a three-way valve; 8. a heat pipe system condenser; 9. an electromagnetic valve; 10. a temperature sensor; 11. a pressure sensor; 12. an evaporator; 13. a fluorine pump; 14. a one-way valve; 15. a plate heat exchanger; 16. a one-way valve; 17. a solenoid valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, the "plurality" generally includes at least two.
It should be understood that the term "and/or" as used herein is merely one relationship describing the association of the associated objects, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
It should be understood that although the terms first, second, third, etc. may be used to describe the controllers in the embodiments of the present invention, these controllers should not be limited to these terms. These terms are only used to distinguish between controllers connected to different devices. For example, a first controller may also be referred to as a second controller, and similarly, a second controller may also be referred to as a first controller, without departing from the scope of embodiments of the invention.
The words "if", as used herein, may be interpreted as "at … …" or "at … …" or "in response to a determination" or "in response to a detection", depending on the context. Similarly, the phrase "if determined" or "if detected (stated condition or event)" may be interpreted as "when determined" or "in response to determination" or "when detected (stated condition or event)" or "in response to detection (stated condition or event), depending on the context.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a product 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 product or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a commodity or device comprising such elements.
Alternative embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Example 1
In a preferred embodiment 1 of the present invention, a heat pipe compression composite refrigeration system is provided, specifically, fig. 1 shows an alternative structural schematic diagram of the system, as shown in fig. 1, the system includes:
The compressor 1, the compressor condenser 2, the liquid storage device 3, the electronic expansion valve 4, the electromagnetic valve 5, the electromagnetic valve 6, the three-way valve 7, the heat pipe system condenser 8, the electromagnetic valve 9, the temperature sensor 10, the pressure sensor 11, the evaporator 12, the fluorine pump 13, the one-way valve 14, the plate heat exchanger 15, the one-way valve 16 and the electromagnetic valve 17.
Compared with a composite refrigeration system with a heat exchanger sharing a fan, the system has the advantages that the installation space required by the evaporator is greatly reduced, the equipment is more compact, and the product cost is reduced.
In summer or in seasons with high load and low temperature difference, the heat pipe cannot effectively operate. The system enters a vapor compression refrigeration mode, at the moment, the compressor is started, the electronic expansion valve is operated according to logic, the fluorine pump is closed, the electromagnetic valves 5 and 9 are closed, and the electromagnetic valves 6 and 17 are opened, so that a conventional compression refrigeration system is formed. Fig. 2 shows an alternative refrigerant flow diagram for the compression refrigeration mode, with the refrigerant circulation flow path shown in bold lines. Compression refrigeration mode, compound operation mode and heat pipe refrigeration mode
In transitional seasons, the heat pipe system can start to operate, but cannot independently bear the load of the refrigerator, and the combined operation of the compression refrigeration system and the heat pipe system meets the refrigeration requirement of the system. When the system detects that the temperature difference between the inside and the outside reaches the starting condition of the heat pipe, the system enters a switching working mode, the refrigerant at the evaporation side cannot meet the normal operation of the heat pipe system, the target evaporation pressure Pr (filling pressure) is set, the compressor is closed, the electromagnetic valves 5, 9 and 17 are closed, the electromagnetic valve 6 is opened, the electronic expansion valve is adjusted to set the opening degree Ex, the heat pipe refrigerant is filled, and at the moment, the refrigerant at the high pressure side enters the heat pipe system through the electromagnetic valve 6.
After the pressure of the evaporator reaches the set pressure Pr, the electromagnetic valve 6 is closed, the electromagnetic valve 9 is opened, the electronic expansion valve is regulated according to the control logic of the compression refrigeration system, the electronic expansion valve enters a combined operation mode, the compressor and the fluorine pump are opened (for providing additional power for the refrigerant to flow through the plate exchange), the refrigerant at the compression refrigeration side exchanges heat with the refrigerant at the outlet of the condensation side of the heat pipe in the plate heat exchanger 15 after being compressed and condensed, the enthalpy value of the refrigerant flowing back to the evaporator end is reduced, and the refrigerating capacity is improved.
Fig. 3 shows an alternative refrigerant flow diagram for the compound mode of operation, with the bold lines representing the refrigerant circulation flow paths of the compression system and the dashed lines representing the refrigerant circulation flow paths of the heat pipe system.
Under the condition of larger temperature difference between the inner ring and the outer ring in winter, the heat pipe system can independently bear the refrigeration requirement, the compression refrigeration system is closed, the fluorine pump is closed, at the moment, the circulation power of the heat pipe refrigerant is mainly provided by the density difference and gravity, the refrigerant enters the condensing end to be condensed into two phases after being gasified by the heat absorption of the evaporator, and the liquid refrigerant flows into the evaporating side to absorb heat again to evaporate under the influence of the gravity.
Fig. 4 shows an alternative refrigerant flow diagram for the heat pipe cooling mode, with the thick dashed line representing the refrigerant circulation flow path of the heat pipe system.
Based on the above heat pipe compression composite refrigeration system, in a preferred embodiment 1 of the present invention, a control method of the heat pipe compression composite refrigeration system is provided, which is applied to the above heat pipe compression composite refrigeration system. Specifically, fig. 5 shows an alternative flow chart of the method, as shown in fig. 5, comprising the following steps S502-S506:
S502: acquiring environmental parameters of an area where a heat pipe compression composite refrigeration system is located;
S504: determining an operation mode of the heat pipe compression composite refrigeration system according to the environmental parameters;
S506: and controlling the operation of the heat pipe compression composite refrigeration system according to the operation mode.
In the embodiment, the control scheme of the heat pipe and compression refrigeration composite system is provided, the matching relation between the current refrigeration load and the refrigeration system is judged by detecting the temperature of the inner ring and the outer ring, so that the matching of different refrigeration modes and the current load is realized, the problem that the operation mode and the actual load of the heat pipe compression composite refrigeration system are not matched in the prior art, and the system energy efficiency is low is effectively solved, and the operation energy efficiency of the heat pipe and the compression refrigeration composite system is improved.
Wherein the environmental parameters include at least an indoor environmental temperature and an outdoor environmental temperature; determining an operating mode of the heat pipe compression composite refrigeration system according to the environmental parameter, comprising: calculating the temperature difference between the indoor environment temperature and the outdoor environment temperature; and determining the operation mode of the heat pipe compression composite refrigeration system according to the temperature difference.
The operation mode at least comprises: a compression refrigeration mode, a compound operation mode and a heat pipe refrigeration mode; determining an operating mode of the heat pipe compression composite refrigeration system according to the temperature difference, comprising: when the temperature difference is larger than a first preset temperature difference, determining that the operation mode of the heat pipe compression composite refrigeration system is a compression refrigeration mode; when the temperature difference is larger than the second preset temperature difference and smaller than the first preset temperature difference, determining that the operation mode of the heat pipe compression composite refrigeration system is a composite operation mode; when the temperature difference is larger than a second preset temperature difference, determining that the operation mode of the heat pipe compression composite refrigeration system is a heat pipe refrigeration mode; wherein the second preset temperature difference is greater than the first preset temperature difference. The second preset temperature difference and the first preset temperature difference are settable parameters, and specific numerical values are set to different values according to different systems.
The matching relation between the current refrigeration load and the refrigeration system is judged by detecting the temperature of the inner ring and the outer ring, and the independent and combined operation of the two refrigeration modes is realized by judging through a control program, so that the operation energy efficiency is improved.
Controlling operation of the heat pipe compression composite refrigeration system according to the operation mode, comprising: when the operation mode of the heat pipe compression composite refrigeration system is determined to be a composite operation mode or the operation mode of the heat pipe compression composite refrigeration system is determined to be a heat pipe refrigeration mode, determining the refrigerant filling rate of the heat pipe compression composite refrigeration system according to the temperature difference before the heat pipe system of the heat pipe compression composite refrigeration system is started; and carrying out refrigerant filling on the heat pipe system according to the refrigerant filling rate. Refrigerant filling is carried out on the heat pipe system according to the refrigerant filling rate, and the method comprises the following steps: determining the refrigerant pressure of the heat pipe system; and (5) carrying out refrigerant filling on the heat pipe system according to the pressure of the refrigerant.
The refrigerant filling amount is an important factor influencing the performance of the heat pipe, when the working medium and the geometric structure are confirmed, the temperature difference of the inner ring and the outer ring of the heated pipe is influenced, the liquid filling rate range Fr is reduced along with the rising of the temperature difference, the optimal filling rate range Fr exists, the optimal filling rate is determined according to the inner volume Ve of the evaporator, the current inner ring working temperature Ti and the saturated refrigerant density ρi, and the refrigerant filling pressure Pr in the heat pipe is confirmed.
Specifically, determining the refrigerant filling rate of the heat pipe system according to the temperature difference includes: acquiring a corresponding relation table of a preset temperature difference and a refrigerant charging rate range; wherein, the larger the temperature difference is, the smaller the refrigerant filling rate range is; determining a refrigerant charging rate range corresponding to the temperature difference according to the corresponding relation table; acquiring system parameters of a heat pipe system; and determining the optimal refrigerant filling rate within the refrigerant filling rate range according to the system parameters.
The system parameters at least comprise the volume of the evaporator and the refrigerant saturation density corresponding to the indoor environment temperature; determining an optimal refrigerant filling rate within a refrigerant filling rate range according to system parameters, comprising: acquiring a fitting relation between system parameters and an optimal refrigerant filling rate; and determining the optimal refrigerant filling rate corresponding to the system parameters according to the fitting relation.
The efficiency of the heat pipe system is affected by the refrigerant filling amount, and the refrigerant amount at the evaporation side can be adjusted in the switching process of the system operation mode, so that the adjustable operation of the heat pipe system is realized. The refrigerant filling needs to consider the compression refrigeration system and the heat pipe system at the same time, and the refrigerant matching difficulty is high. The scheme of the invention can intelligently realize the matching of the refrigerant filling quantity, realize the combined operation of the system or the operation of the heat pipe system, and has lower influence degree of the refrigerant filling quantity matching on the heat pipe system.
Example 2
Based on the control method of the heat pipe compression composite refrigeration system provided in the above embodiment 1, in a preferred embodiment 2 of the present invention, there is further provided a control device of the heat pipe compression composite refrigeration system, specifically, fig. 6 shows an optional block diagram of the device, as shown in fig. 6, and the device includes:
An obtaining module 602, configured to obtain an environmental parameter of an area where the heat pipe compression composite refrigeration system is located;
A determining module 604, coupled to the obtaining module 602, for determining an operation mode of the heat pipe compression composite refrigeration system according to the environmental parameter;
The control module 606 is connected to the determining module 604, and is configured to control operation of the heat pipe compression composite refrigeration system according to an operation mode.
In the embodiment, the control scheme of the heat pipe and compression refrigeration composite system is provided, the matching relation between the current refrigeration load and the refrigeration system is judged by detecting the temperature of the inner ring and the outer ring, so that the matching of different refrigeration modes and the current load is realized, the problem that the operation mode and the actual load of the heat pipe compression composite refrigeration system are not matched in the prior art, and the system energy efficiency is low is effectively solved, and the operation energy efficiency of the heat pipe and the compression refrigeration composite system is improved.
Wherein the environmental parameters include at least an indoor environmental temperature and an outdoor environmental temperature; the determining module 604 includes: the computing submodule is used for computing the temperature difference between the indoor environment temperature and the outdoor environment temperature; and the first determining submodule is used for determining the operation mode of the heat pipe compression composite refrigeration system according to the temperature difference.
The operation mode at least comprises: a compression refrigeration mode, a compound operation mode and a heat pipe refrigeration mode; the first determination submodule includes: the first determining unit is used for determining that the operation mode of the heat pipe compression composite refrigeration system is a compression refrigeration mode when the temperature difference is larger than a first preset temperature difference; the second determining unit is used for determining that the operation mode of the heat pipe compression composite refrigeration system is a composite operation mode when the temperature difference is larger than a second preset temperature difference and smaller than the first preset temperature difference; the third determining unit is used for determining that the operation mode of the heat pipe compression composite refrigeration system is a heat pipe refrigeration mode when the temperature difference is larger than a second preset temperature difference; wherein the second preset temperature difference is greater than the first preset temperature difference.
The control module 606 includes: the second determining submodule is used for determining the refrigerant filling rate of the heat pipe compression composite refrigeration system according to the temperature difference before the heat pipe system of the heat pipe compression composite refrigeration system is started when the operation mode of the heat pipe compression composite refrigeration system is determined to be the composite operation mode or the operation mode of the heat pipe compression composite refrigeration system is determined to be the heat pipe refrigeration mode; and the filling sub-module is used for filling the refrigerant into the heat pipe system according to the refrigerant filling rate.
The filling submodule includes: a fourth determining unit for determining the refrigerant pressure of the heat pipe system; and the filling unit is used for filling the refrigerant into the heat pipe system according to the pressure of the refrigerant.
The second determination submodule includes: the first acquisition unit is used for acquiring a corresponding relation table of a preset temperature difference and a refrigerant charging rate range; wherein, the larger the temperature difference is, the smaller the refrigerant filling rate range is; a fifth determining unit, configured to determine a refrigerant charging rate range corresponding to the temperature difference according to the correspondence table; the second acquisition unit is used for acquiring system parameters of the heat pipe system; and the sixth determining unit is used for determining the optimal refrigerant filling rate within the refrigerant filling rate range according to the system parameters.
The system parameters at least comprise the volume of the evaporator and the refrigerant saturation density corresponding to the indoor environment temperature; the sixth determination unit includes: acquiring a fitting relation between system parameters and an optimal refrigerant filling rate; and determining the optimal refrigerant filling rate corresponding to the system parameters according to the fitting relation.
The specific manner in which the respective units and modules perform the operations in the apparatus of the above embodiments has been described in detail in the embodiments related to the method, and will not be described in detail here.
Example 3
Based on the control device for the heat pipe compression composite refrigeration system provided in the above embodiment 2, in a preferred embodiment 3 of the present invention, there is further provided a heat pipe compression composite refrigeration system, including the control device for the heat pipe compression composite refrigeration system as described above.
In the embodiment, the control scheme of the heat pipe and compression refrigeration composite system is provided, the matching relation between the current refrigeration load and the refrigeration system is judged by detecting the temperature of the inner ring and the outer ring, so that the matching of different refrigeration modes and the current load is realized, the problem that the operation mode and the actual load of the heat pipe compression composite refrigeration system are not matched in the prior art, and the system energy efficiency is low is effectively solved, and the operation energy efficiency of the heat pipe and the compression refrigeration composite system is improved.
Example 4
Based on the heat pipe compression composite refrigeration system control method provided in the above-described embodiment 1, there is also provided in a preferred embodiment 4 of the present invention a storage medium containing computer-executable instructions which, when executed by a computer processor, are used to perform the heat pipe compression composite refrigeration system control method as described above.
In the embodiment, the control scheme of the heat pipe and compression refrigeration composite system is provided, the matching relation between the current refrigeration load and the refrigeration system is judged by detecting the temperature of the inner ring and the outer ring, so that the matching of different refrigeration modes and the current load is realized, the problem that the operation mode and the actual load of the heat pipe compression composite refrigeration system are not matched in the prior art, and the system energy efficiency is low is effectively solved, and the operation energy efficiency of the heat pipe and the compression refrigeration composite system is improved.
Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the application following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the application pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.
It is to be understood that the invention is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (10)
1. A control method of a heat pipe compression composite refrigeration system, which is applied to the heat pipe compression composite refrigeration system, and is characterized in that the method comprises the following steps:
Acquiring environmental parameters of an area where the heat pipe compression composite refrigeration system is located;
Determining an operation mode of the heat pipe compression composite refrigeration system according to the environmental parameters;
And controlling the operation of the heat pipe compression composite refrigeration system according to the operation mode.
2. The method of claim 1, wherein the environmental parameters include at least an indoor environmental temperature and an outdoor environmental temperature; determining an operation mode of the heat pipe compression composite refrigeration system according to the environmental parameter, wherein the operation mode comprises the following steps:
Calculating a temperature difference between the indoor environment temperature and the outdoor environment temperature;
And determining the operation mode of the heat pipe compression composite refrigeration system according to the temperature difference.
3. The method according to claim 2, wherein the operation mode comprises at least: a compression refrigeration mode, a compound operation mode and a heat pipe refrigeration mode; determining an operation mode of the heat pipe compression composite refrigeration system according to the temperature difference, wherein the operation mode comprises the following steps:
When the temperature difference is larger than a first preset temperature difference, determining the operation mode of the heat pipe compression composite refrigeration system as the compression refrigeration mode;
When the temperature difference is larger than a second preset temperature difference and smaller than the first preset temperature difference, determining an operation mode of the heat pipe compression composite refrigeration system as the composite operation mode;
When the temperature difference is larger than the second preset temperature difference, determining that the operation mode of the heat pipe compression composite refrigeration system is the heat pipe refrigeration mode; wherein the second preset temperature difference is greater than the first preset temperature difference.
4. The method of claim 3, wherein controlling operation of the heat pipe compression compound refrigeration system in accordance with the mode of operation comprises:
When the operation mode of the heat pipe compression composite refrigeration system is determined to be the composite operation mode or the operation mode of the heat pipe compression composite refrigeration system is determined to be the heat pipe refrigeration mode, before the heat pipe system of the heat pipe compression composite refrigeration system is started, determining the refrigerant filling rate of the heat pipe compression composite refrigeration system according to the temperature difference;
And filling the refrigerant into the heat pipe system according to the refrigerant filling rate.
5. The method of claim 4, wherein refrigerant charging the heat pipe system according to the refrigerant charge rate comprises:
determining the refrigerant pressure of the heat pipe system;
And filling the refrigerant into the heat pipe system according to the refrigerant pressure.
6. The method of claim 4, wherein determining a refrigerant charge rate of the heat pipe system based on the temperature differential comprises:
acquiring a preset corresponding relation table of the temperature difference and the refrigerant charging rate range; wherein, the larger the temperature difference is, the smaller the refrigerant charging rate range is;
determining the refrigerant charging rate range corresponding to the temperature difference according to the corresponding relation table;
acquiring system parameters of the heat pipe system;
and determining the optimal refrigerant filling rate within the refrigerant filling rate range according to the system parameters.
7. The method of claim 6, wherein the system parameters include at least an evaporator volume, a refrigerant saturation density corresponding to the indoor ambient temperature; determining an optimal refrigerant filling rate within the refrigerant filling rate range according to the system parameters, including:
acquiring a fitting relation between the system parameters and the optimal refrigerant filling rate;
And determining the optimal refrigerant filling rate corresponding to the system parameters according to the fitting relation.
8. A control device for a heat pipe compression composite refrigeration system, which is applied to the heat pipe compression composite refrigeration system, characterized in that the device comprises:
the acquisition module is used for acquiring the environmental parameters of the area where the heat pipe compression composite refrigeration system is located;
The determining module is used for determining the operation mode of the heat pipe compression composite refrigeration system according to the environmental parameters;
And the control module is used for controlling the operation of the heat pipe compression composite refrigeration system according to the operation mode.
9. A heat pipe compression composite refrigeration system comprising the heat pipe compression composite refrigeration system control device of claim 8.
10. A storage medium containing computer executable instructions, which when executed by a computer processor are for performing the heat pipe compression compound refrigeration system control method of any one of claims 1 to 8.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311804383.3A CN117968268A (en) | 2023-12-25 | 2023-12-25 | Heat pipe compression composite refrigeration system and control method and control device thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311804383.3A CN117968268A (en) | 2023-12-25 | 2023-12-25 | Heat pipe compression composite refrigeration system and control method and control device thereof |
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