CN117213123A - Method and device for controlling water chiller, water chiller and storage medium - Google Patents
Method and device for controlling water chiller, water chiller and storage medium Download PDFInfo
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- CN117213123A CN117213123A CN202311100428.9A CN202311100428A CN117213123A CN 117213123 A CN117213123 A CN 117213123A CN 202311100428 A CN202311100428 A CN 202311100428A CN 117213123 A CN117213123 A CN 117213123A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 245
- 238000000034 method Methods 0.000 title claims abstract description 55
- 230000005855 radiation Effects 0.000 claims abstract description 29
- 230000000694 effects Effects 0.000 abstract description 7
- 230000000191 radiation effect Effects 0.000 abstract description 6
- 230000006872 improvement Effects 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 description 30
- 238000004891 communication Methods 0.000 description 10
- 230000006870 function Effects 0.000 description 8
- 239000000498 cooling water Substances 0.000 description 7
- 230000017525 heat dissipation Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000007613 environmental effect Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000001965 increasing effect Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000003507 refrigerant Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000012546 transfer Methods 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 application relates to the technical field of water coolers, and discloses a method for controlling the water coolers, which comprises the following steps: when the operation frequency of the compressor is in a set frequency interval, obtaining the temperature difference of the water outlet; determining a target rotating speed of the heat radiation fan according to the operating frequency of the compressor, the outlet water temperature difference and the environment temperature; and adjusting the rotating speed of the heat radiation fan to the target rotating speed. The influence of the running frequency, the water outlet temperature difference and the environment temperature of the compressor on the heat radiation effect of the heat radiation fan is fully considered, so that the rotation speed of the heat radiation fan of the water chiller is adjusted more accurately, the heat radiation effect of the heat radiation fan on the condenser is better, and the improvement effect of the energy efficiency ratio of the water chiller is enhanced. The application also discloses a device for controlling the water chiller, the water chiller and a storage medium.
Description
Technical Field
The application relates to the technical field of water coolers, in particular to a method and a device for controlling a water cooler, the water cooler and a storage medium.
Background
At present, with the rapid development of social economy, the number of factory equipment is increased, and the factory equipment can be cooled by a water chiller in the running process of the equipment. The water chiller is water cooling equipment which can provide constant temperature, constant current and constant pressure; the principle of the water chiller is that a certain amount of water is injected into an internal water tank of the machine, the water is cooled by a chiller refrigerating system, then the low-temperature frozen water is injected into equipment to be cooled by a water pump in the machine, the frozen water takes away the heat in the machine, and the high-temperature hot water is returned to the water tank again for cooling, so that the effect of cooling the equipment is achieved by circulating exchange cooling. The current water chiller adjusts the energy efficiency ratio only by adjusting the operating frequency of the compressor, which can cause the problem of lower energy efficiency of the system due to the fact that the operating frequency of the compressor exceeds a certain value.
The related art discloses a method for controlling a water chiller, comprising: acquiring an ambient temperature value and a water temperature value of an inflow end of the on-off device; controlling the running state of the on-off device according to the environmental temperature value; and adjusting the running state of the compressor and the fan set according to the water temperature value. And comprehensively adjusting the running state of the water chilling unit according to the environmental temperature value and the water temperature value, thereby effectively improving the energy efficiency ratio of the water chilling unit.
In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:
the related technology is adopted to adjust the fan according to the ambient temperature and the water temperature value, and although the energy efficiency ratio of the water chiller is improved to a certain extent, the energy efficiency ratio of the water chiller is not only related to the ambient temperature value and the water temperature value, but also influenced by other parameters, such as the running frequency of the compressor, the water outlet temperature and the like. Therefore, the fan speed is adjusted only according to the ambient temperature and the water temperature value, which is not accurate enough. The energy efficiency ratio of the water chiller is improved poorly.
It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the application and thus may include information that does not form the prior art that is already known to those of ordinary skill in the art.
Disclosure of Invention
The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview, and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended as a prelude to the more detailed description that follows.
The embodiment of the disclosure provides a method and a device for controlling a water chiller, the water chiller and a storage medium, so that the rotation speed of a cooling fan of the water chiller is adjusted more accurately, and the lifting effect of the energy efficiency ratio of the water chiller is enhanced.
In some embodiments, the chiller includes a heat rejection fan for condenser heat rejection; the method comprises the following steps: when the operation frequency of the compressor is in a set frequency interval, obtaining the temperature difference of the water outlet; determining a target rotating speed of the heat radiation fan according to the operating frequency of the compressor, the outlet water temperature difference and the environment temperature; and adjusting the rotating speed of the heat radiation fan to the target rotating speed.
In some embodiments, the apparatus comprises: the water chiller control system comprises a processor and a memory storing program instructions, wherein the processor is configured to execute the method for controlling the water chiller when executing the program instructions.
In some embodiments, the water chiller includes:
the water chiller body comprises a heat radiation fan for radiating heat of the condenser and a water tank for heat exchange; the method comprises the steps of,
the device for controlling the water chiller is arranged on the water chiller body.
In some embodiments, the storage medium stores program instructions that, when executed, perform the method for chiller control described above.
The method and the device for controlling the water chiller, the water chiller and the storage medium provided by the embodiment of the disclosure can realize the following technical effects:
when the operation frequency of the compressor is in a set frequency interval, the temperature difference of the water outlet is obtained. And determining the target rotating speed of the heat radiation fan according to the operating frequency, the water outlet temperature difference and the environment temperature of the compressor, and adjusting the rotating speed of the heat radiation fan to the target rotating speed. The influence of the running frequency, the water outlet temperature difference and the environment temperature of the compressor on the heat radiation effect of the heat radiation fan is fully considered, so that the rotation speed of the heat radiation fan of the water chiller is adjusted more accurately, the heat radiation effect of the heat radiation fan on the condenser is better, and the improvement effect of the energy efficiency ratio of the water chiller is enhanced.
The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.
Drawings
One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which like reference numerals refer to similar elements, and in which:
FIG. 1 is a schematic view of an overall structure of a water chiller according to an embodiment of the present disclosure;
FIG. 2 is a schematic illustration of a method for chiller control provided by an embodiment of the present disclosure;
FIG. 3 is a schematic illustration of another method for chiller control provided by an embodiment of the present disclosure;
FIG. 4 is a schematic illustration of another method for chiller control provided by an embodiment of the present disclosure;
FIG. 5 is a schematic illustration of an apparatus for chiller control provided by an embodiment of the present disclosure;
fig. 6 is a schematic diagram of a water chiller provided by an embodiment of the present disclosure.
Reference numerals:
1: a compressor; 2: a condenser; 3: a throttle device; 4: a heat exchanger; 5: a heat radiation fan; 6: a water tank; 61: a water filling port; 62: a water outlet; 63: a water inlet; 64: a water outlet; 65: a water pump; 200: the device is used for controlling the water chiller; 300: the device is used for controlling the water chiller; 301: a processor; 101: a memory; 102: a communication interface; 103: a bus.
Detailed Description
So that the manner in which the features and techniques of the disclosed embodiments can be understood in more detail, a more particular description of the embodiments of the disclosure, briefly summarized below, may be had by reference to the appended drawings, which are not intended to be limiting of the embodiments of the disclosure. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may still be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawing.
The terms first, second and the like in the description and in the claims of the embodiments of the disclosure and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe embodiments of the present disclosure. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.
The term "plurality" means two or more, unless otherwise indicated.
In the embodiment of the present disclosure, the character "/" indicates that the front and rear objects are an or relationship. For example, A/B represents: a or B.
The term "and/or" is an associative relationship that describes an object, meaning that there may be three relationships. For example, a and/or B, represent: a or B, or, A and B.
The term "corresponding" may refer to an association or binding relationship, and the correspondence between a and B refers to an association or binding relationship between a and B.
In the embodiment of the disclosure, the intelligent home appliance refers to a home appliance formed after a microprocessor, a sensor technology and a network communication technology are introduced into the home appliance, and has the characteristics of intelligent control, intelligent sensing and intelligent application, the operation process of the intelligent home appliance often depends on the application and processing of modern technologies such as the internet of things, the internet and an electronic chip, for example, the intelligent home appliance can realize remote control and management of a user on the intelligent home appliance by connecting the electronic appliance.
In the disclosed embodiment, the terminal device refers to an electronic device with a wireless connection function, and the terminal device can be in communication connection with the intelligent household electrical appliance through connecting with the internet, or can be in communication connection with the intelligent household electrical appliance through Bluetooth, wifi and other modes. In some embodiments, the terminal device is, for example, a mobile device, a computer, or an in-vehicle device built into a hover vehicle, etc., or any combination thereof. The mobile device may include, for example, a cell phone, smart home device, wearable device, smart mobile device, virtual reality device, etc., or any combination thereof, wherein the wearable device includes, for example: smart watches, smart bracelets, pedometers, etc.
At present, with the rapid development of social economy, the number of factory equipment is increased, and the factory equipment can be cooled by a water chiller in the running process of the equipment. The water chiller is water cooling equipment which can provide constant temperature, constant current and constant pressure; the principle of the water chiller is that a certain amount of water is injected into an internal water tank of the machine, the water is cooled by a chiller refrigerating system, then the low-temperature frozen water is injected into equipment to be cooled by a water pump in the machine, the frozen water takes away the heat in the machine, and the high-temperature hot water is returned to the water tank again for cooling, so that the effect of cooling the equipment is achieved by circulating exchange cooling. The current water chiller adjusts the energy efficiency ratio only by adjusting the operating frequency of the compressor, which can cause the problem of lower energy efficiency of the system due to the fact that the operating frequency of the compressor exceeds a certain value. The related art discloses a method for controlling a water chiller, comprising: acquiring an ambient temperature value and a water temperature value of an inflow end of the on-off device; controlling the running state of the on-off device according to the environmental temperature value; and adjusting the running state of the compressor and the fan set according to the water temperature value. And comprehensively adjusting the running state of the water chilling unit according to the environmental temperature value and the water temperature value, thereby effectively improving the energy efficiency ratio of the water chilling unit. The related technology is adopted to adjust the fan according to the ambient temperature and the water temperature value, and although the energy efficiency ratio of the water chiller is improved to a certain extent, the energy efficiency ratio of the water chiller is not only related to the ambient temperature value and the water temperature value, but also influenced by other parameters, such as the running frequency of the compressor, the water outlet temperature and the like. Therefore, the fan speed is adjusted only according to the ambient temperature and the water temperature value, which is not accurate enough. The energy efficiency ratio of the water chiller is improved poorly.
As shown in fig. 1, the water chiller includes a refrigerant circulation circuit and a water tank 6. The refrigerant circulation loop comprises a compressor 1, a condenser 2, a throttling device 3 and a heat exchanger 4 which are sequentially connected, and finally returns to the compressor 1 from the heat exchanger 4. The condenser 2 is correspondingly provided with a heat dissipation fan 5 for dissipating heat of the condenser 2. The heat exchanger 4 is disposed in the water tank 6 and is used for heat exchanging the water in the water tank 6. The water tank 6 includes a water filling port 61, a water discharging port 62, a water inlet 63, and a water outlet 64. The water inlet 63 opens into the heat exchanger 4 for passing water into the heat exchanger 4 for heat exchange. A water pump 65 is arranged on the pipeline of the water outlet 64 and is used for pumping water out of the water tank 6. Wherein the heat exchanger 4 may be any type of heat exchanger. Such as plate heat exchangers, jacketed heat exchangers, shell and tube heat exchangers, submerged coil heat exchangers, and the like. The restriction 3 is an expansion valve or a capillary tube.
The heat exchanger 4 in the refrigerant circulation loop of the water chiller cools the water in the water tank 6, then the water pump 65 sends the low-temperature cooling water into the equipment to be cooled, the cooling water heats up and flows back to the water tank 6 after taking away heat, the cooling water is conveyed back to the equipment after being cooled again, and a user can set or observe the water temperature working state through the temperature controller.
Based on the above-mentioned structure of the water chiller, as shown in fig. 2, an embodiment of the present disclosure provides a method for controlling the water chiller, including:
s21, when the operation frequency of the compressor is in a set frequency range, the water chiller acquires the temperature difference of the outlet water.
S22, the chiller determines the target rotating speed of the heat radiation fan according to the operating frequency of the compressor, the outlet water temperature difference and the environment temperature.
S23, the cooling machine adjusts the rotating speed of the cooling fan to the target rotating speed.
After the cold water machine is started, the numerical value of the operation parameters (the operation frequency of the compressor, the outlet water temperature difference and the environment temperature) is obtained. And continuously acquiring parameter values of the operation parameters, and taking an average value in the second time period as reference data to avoid errors of the data. The second duration may be any duration of 4-6s, for example, 4s, 5s, 6s, or the like.
By adopting the method for controlling the water chiller provided by the embodiment of the disclosure, when the running frequency of the compressor is in the set frequency interval, the outlet water temperature difference is obtained. And determining the target rotating speed of the heat radiation fan according to the operating frequency, the water outlet temperature difference and the environment temperature of the compressor, and adjusting the rotating speed of the heat radiation fan to the target rotating speed. The influence of the running frequency, the water outlet temperature difference and the environment temperature of the compressor on the heat radiation effect of the heat radiation fan is fully considered, so that the rotation speed of the heat radiation fan of the water chiller is adjusted more accurately, the heat radiation effect of the heat radiation fan on the condenser is better, and the improvement effect of the energy efficiency ratio of the water chiller is enhanced.
Optionally, the water chiller obtaining the outlet water temperature difference includes: the water chiller detects the temperature of the water tank; the water chiller determines the outlet water temperature difference according to the water tank temperature and the set outlet water temperature.
Therefore, the water chiller detects the temperature of the water tank, determines the temperature difference of the water according to the temperature of the water tank and the set water outlet temperature, and can determine the actual water temperature in the water tank and the set water outlet temperature.
Optionally, the water chiller determines the water outlet temperature difference according to the water tank temperature and the set water outlet temperature, including: the water chiller calculates a first temperature difference between the water tank temperature and the set water outlet temperature; the water chiller determines that the first temperature difference is the outlet water temperature difference.
Thus, the water chiller calculates a first temperature difference between the water tank temperature and the set outlet water temperature, and determines the first temperature difference as the outlet water temperature difference. The first temperature difference value between the water tank temperature and the set water outlet temperature can represent the temperature difference condition of the water temperature in the water tank and the user demand temperature, so that the degree of lifting required by the water cooling efficiency can be determined, and the temperature difference between the water temperature and the user demand temperature is reduced.
Based on the above-mentioned structure of the water chiller, as shown in fig. 3, an embodiment of the present disclosure provides a method for controlling the water chiller, including:
s21, when the operation frequency of the compressor is in a set frequency range, the water chiller acquires the temperature difference of the outlet water.
S31, the water chiller determines a frequency control parameter, a temperature difference control parameter and a ring temperature control parameter according to the operating frequency of the compressor, the outlet water temperature difference and the environment temperature respectively.
S32, the water chiller determines a target rotating speed according to the frequency control parameter, the temperature difference control parameter and the ring temperature control parameter.
S23, the cooling machine adjusts the rotating speed of the cooling fan to the target rotating speed.
By adopting the method for controlling the water chiller provided by the embodiment of the disclosure, the water chiller determines the frequency control parameter, the temperature difference control parameter and the ring temperature control parameter according to the running frequency, the outlet water temperature difference and the environment temperature of the compressor respectively, and determines the target rotating speed according to the frequency control parameter, the temperature difference control parameter and the ring temperature control parameter. The influence of the running frequency, the outlet water temperature difference and the environment temperature of the compressor on the heat dissipation of the condenser is fully considered, so that the rotating speed of the heat dissipation fan is more accurate.
Optionally, the determining the frequency control parameter, the temperature difference control parameter and the ring temperature control parameter by the chiller according to the operation frequency, the outlet water temperature difference and the ambient temperature of the compressor respectively includes: the chiller calculates v1=k1×f, v2=k2×Δt, v3=k3× (Th-a); wherein, V1 is the frequency control parameter, V2 is the temperature difference control parameter, V3 is the ring temperature control parameter, K1 is the first frequency coefficient, K2 is the second frequency coefficient, K3 is the third frequency coefficient, F is the operating frequency of the compressor, deltaT is the outlet water temperature difference, th is the ambient temperature, and a is the fixed value reference parameter. In some embodiments, a may be any fixed value, such as 19, 20, 21, and the like.
The water chiller determines a first frequency coefficient corresponding to an operating frequency of the compressor according to the first relationship. And determining a third frequency coefficient corresponding to the ambient temperature by the water chiller according to the third relation.
When the temperature difference of the outlet water is larger than the set temperature difference, for example, when the delta T is larger than 10 ℃, the temperature difference of the outlet water is larger at this time, the cooling capacity of the water in the water tank needs to be enhanced, and the condenser emits larger heat at this time, so that the heat dissipation capacity of the condenser needs to be enhanced. Therefore, the chiller determines the temperature difference control parameter v2=vmax, thereby increasing the target rotation speed of the heat radiation fan.
When the temperature difference of the outlet water is smaller than or equal to the set temperature difference, for example, when the delta T is smaller than or equal to 10 ℃, the water chiller determines a second frequency coefficient according to the temperature difference range where the temperature difference of the outlet water is located. Specifically, the water chiller determines a second frequency coefficient corresponding to a temperature difference range in which the outlet water temperature difference is located according to a second relationship. The first relationship, the second relationship and the third relationship can be all measured according to experiments, can be determined according to user settings, and can be specifically stored in a local server or a cloud server without limitation. The second relationship includes: k2=k2b when Δt is 2 ℃ less than or equal to 10 ℃; k2=0 when Δt is less than or equal to-2 ℃ and equal to 2 ℃; when DeltaT is less than or equal to minus 2 ℃, K2=K2c. Wherein b is any positive number and c is any negative number. The second frequency coefficient is determined according to the temperature difference range where the outlet water temperature difference is located, and the second frequency coefficient can be matched with the outlet water temperature difference, so that the temperature difference control parameter can be matched with the outlet water temperature difference, and the accuracy of the target rotating speed is improved. When the water tank temperature is larger than the set water outlet temperature, the second frequency coefficient is set to be positive, and when the water tank temperature is smaller than the set water outlet temperature, the second frequency coefficient is set to be negative, so that the heat radiation capacity of the heat radiation fan is matched with the water outlet temperature difference.
Therefore, the water chiller calculates the corresponding control parameters through the frequency coefficients corresponding to the different control parameters, so that each control parameter can be more accurate.
Optionally, the determining the target rotation speed of the water chiller according to the frequency control parameter, the temperature difference control parameter and the ring temperature control parameter includes: calculating V=V1+V2+V3+V0 by the water chiller; wherein V is the target rotation speed, and V0 is the compensation rotation speed.
And determining the compensation rotating speed corresponding to the frequency control parameter, the temperature difference control parameter and the ring temperature control parameter according to the fourth relation, so that the compensation rotating speed is matched with each control parameter, and the accuracy of the target rotating speed is improved. The fourth relationship may be measured according to an experiment, or may be determined according to a user setting, and may specifically be stored in a local or cloud server, which is not limited thereto.
Therefore, the target rotating speed of the water chiller is calculated through the frequency control parameter, the temperature difference control parameter and the ring temperature control parameter, and the influences of the running frequency, the outlet water temperature difference and the environment temperature of the compressor on the heat dissipation of the condenser are fully considered, so that the rotating speed of the heat dissipation fan is more accurate.
Optionally, the method for controlling the water chiller further comprises: when the running frequency of the compressor is outside the set frequency interval, the cooling water machine adjusts the rotating speed of the cooling fan according to the frequency of the compressor.
Based on the above-mentioned structure of the water chiller, as shown in fig. 4, an embodiment of the present disclosure provides a method for controlling the water chiller, including:
s21, when the operation frequency of the compressor is in a set frequency range, the water chiller acquires the temperature difference of the outlet water.
S22, the chiller determines the target rotating speed of the heat radiation fan according to the operating frequency of the compressor, the outlet water temperature difference and the environment temperature.
S23, the cooling machine adjusts the rotating speed of the cooling fan to the target rotating speed.
S41, when the operation frequency of the compressor is outside the set frequency interval, the cooling water machine adjusts the rotating speed of the cooling fan according to the frequency of the compressor.
By adopting the method for controlling the water chiller, which is provided by the embodiment of the disclosure, when the running frequency of the compressor is outside the set frequency interval, the compressor may be stopped or just started soon, the water outlet temperature difference does not tend to be stable, and the target rotating speed of the heat dissipation fan is determined according to the control parameter of the water outlet temperature difference and is easy to have errors. Therefore, the cooling water machine adjusts the rotating speed of the cooling fan according to the frequency of the compressor.
Optionally, the adjusting the rotation speed of the cooling fan according to the frequency of the compressor includes: when the compressor is stopped, the cooling fan is controlled by the water chiller to stop after a first time period; when the compressor is smaller than the minimum value of the set frequency interval, the cooling fan is controlled by the cooling machine to operate at the minimum rotation speed; when the compressor is larger than the maximum value of the set frequency interval, the cooling fan is controlled by the water chiller to run at the maximum rotation speed.
Therefore, when the compressor is stopped, the cooling fan is controlled to stop after the first time, and the cooling fan is prevented from running under the condition that the cooling fan is not in action. When the compressor is smaller than the minimum value of the set frequency interval, the cooling fan is controlled to run at the minimum rotation speed by the cooling water machine. When the compressor is larger than the maximum value of the set frequency interval, the refrigerating capacity of the water chiller reaches the maximum, so that the water chiller directly controls the cooling fan to operate at the maximum rotating speed so as to cool the condenser and improve the energy efficiency ratio.
As shown in connection with fig. 5, an embodiment of the present disclosure provides an apparatus 300 for chiller control, including a processor (processor) 301 and a memory (memory) 101. Optionally, the apparatus may further comprise a communication interface (Communication Interface) 102 and a bus 103. The processor 301, the communication interface 102, and the memory 101 may communicate with each other via the bus 103. The communication interface 102 may be used for information transfer. The processor 301 may call logic instructions in the memory 101 to perform the method for chiller control of the above-described embodiments.
Further, the logic instructions in the memory 101 described above may be implemented in the form of software functional units and may be stored in a computer readable storage medium when sold or used as a stand alone product.
The memory 101 is a computer readable storage medium that can be used to store a software program, a computer executable program, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 301 executes the program instructions/modules stored in the memory 101 to perform functional applications and data processing, i.e., to implement the method for chiller control in the above-described embodiments.
The memory 101 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, at least one application program required for a function; the storage data area may store data created according to the use of the terminal device, etc. Further, the memory 101 may include a high-speed random access memory, and may also include a nonvolatile memory.
As shown in connection with fig. 6, an embodiment of the present disclosure provides a water chiller 100, comprising: a chiller body, and the apparatus 200 (300) for chiller control described above. The apparatus 200 (300) for controlling a water chiller is mounted to a water chiller body. The mounting relationship described herein is not limited to being placed inside the chiller, but includes mounting connections with other components of the chiller, including but not limited to physical connections, electrical connections, or signal transmission connections, etc. Those skilled in the art will appreciate that the apparatus 200 (300) for chiller control may be adapted to a feasible chiller body to implement other feasible embodiments.
The disclosed embodiments provide a storage medium storing computer executable instructions configured to perform the above-described method for chiller control.
The storage medium may be a transitory storage medium or a non-transitory storage medium.
Embodiments of the present disclosure may be embodied in a software product stored on a storage medium, including one or more instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of a method according to embodiments of the present disclosure. And the aforementioned storage medium may be a non-transitory storage medium including: a plurality of media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or a transitory storage medium.
The above description and the drawings illustrate embodiments of the disclosure sufficiently to enable those skilled in the art to practice them. Other embodiments may involve structural, logical, electrical, process, and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in, or substituted for, those of others. Moreover, the terminology used in the present application is for the purpose of describing embodiments only and is not intended to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a," "an," and "the" (the) are intended to include the plural forms as well, unless the context clearly indicates otherwise. Similarly, the term "and/or" as used in this disclosure is meant to encompass any and all possible combinations of one or more of the associated listed. Furthermore, when used in the present disclosure, the terms "comprises," "comprising," and/or variations thereof, mean that the recited features, integers, steps, operations, elements, and/or components are present, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Without further limitation, an element defined by the phrase "comprising one …" does not exclude the presence of other like elements in a process, method or apparatus comprising such elements. In this context, each embodiment may be described with emphasis on the differences from the other embodiments, and the same similar parts between the various embodiments may be referred to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method sections disclosed in the embodiments, the description of the method sections may be referred to for relevance.
Those of skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. The skilled artisan may use different methods for each particular application to achieve the described functionality, but such implementation should not be considered to be beyond the scope of the embodiments of the present disclosure. It will be clearly understood by those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, which are not repeated herein.
In the embodiments disclosed herein, the disclosed methods, articles of manufacture (including but not limited to devices, apparatuses, etc.) may be practiced in other ways. For example, the apparatus embodiments described above are merely illustrative, and for example, the division of the units may be merely a logical function division, and there may be additional divisions when actually implemented, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. In addition, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interface, device or unit indirect coupling or communication connection, which may be in electrical, mechanical or other form. The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to implement the present embodiment. In addition, each functional unit in the embodiments of the present disclosure 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 flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. In the description corresponding to the flowcharts and block diagrams in the figures, operations or steps corresponding to different blocks may also occur in different orders than that disclosed in the description, and sometimes no specific order exists between different operations or steps. For example, two consecutive operations or steps may actually be performed substantially in parallel, they may sometimes be performed in reverse order, which may be dependent on the functions involved. Each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
Claims (10)
1. The method for controlling the water chiller is characterized in that the water chiller comprises a heat radiation fan for radiating heat of a condenser; the method comprises the following steps:
when the operation frequency of the compressor is in a set frequency interval, obtaining the temperature difference of the water outlet;
determining a target rotating speed of the heat radiation fan according to the operating frequency of the compressor, the outlet water temperature difference and the environment temperature;
and adjusting the rotating speed of the heat radiation fan to the target rotating speed.
2. The method of claim 1, wherein the chiller further comprises a water tank for heat exchange; the obtaining the outlet water temperature difference comprises the following steps:
detecting the temperature of the water tank;
and determining the outlet water temperature difference according to the water tank temperature and the set outlet water temperature.
3. The method of claim 2, wherein determining the outlet water temperature difference based on the water tank temperature and the set outlet water temperature comprises:
calculating a first temperature difference between the water tank temperature and the set water outlet temperature;
and determining the first temperature difference as the outlet water temperature difference.
4. The method of claim 1, wherein determining the target rotational speed of the heat dissipating fan based on the operating frequency of the compressor, the outlet water temperature difference, and the ambient temperature comprises:
determining a frequency control parameter, a temperature difference control parameter and a ring temperature control parameter according to the operation frequency, the outlet water temperature difference and the environment temperature of the compressor respectively;
and determining the target rotating speed according to the frequency control parameter, the temperature difference control parameter and the ring temperature control parameter.
5. The method of claim 4, wherein determining the frequency control parameter, the temperature difference control parameter, and the ring temperature control parameter based on the operating frequency of the compressor, the outlet water temperature difference, and the ambient temperature, respectively, comprises:
calculating v1=k1×f, v2=k2×Δt, v3=k3× (Th-a);
wherein, V1 is the frequency control parameter, V2 is the temperature difference control parameter, V3 is the ring temperature control parameter, K1 is the first frequency coefficient, K2 is the second frequency coefficient, K3 is the third frequency coefficient, F is the operating frequency of the compressor, deltaT is the outlet water temperature difference, th is the ambient temperature, and a is the fixed value reference parameter.
6. The method of claim 5, wherein determining the target rotational speed based on the frequency control parameter, the temperature difference control parameter, and the ring temperature control parameter comprises:
calculating v=v1+v2+v3+v0;
wherein V is the target rotation speed, and V0 is the compensation rotation speed.
7. The method according to any one of claims 1 to 6, further comprising:
when the operation frequency of the compressor is outside the set frequency interval, the rotating speed of the heat radiation fan is adjusted according to the frequency of the compressor.
8. An apparatus for chiller control comprising a processor and a memory storing program instructions, wherein the processor is configured, when executing the program instructions, to perform the method for chiller control of any of claims 1 to 7.
9. A water chiller, comprising:
the water chiller body comprises a heat radiation fan for radiating heat of the condenser and a water tank for heat exchange; the method comprises the steps of,
the apparatus for controlling a water chiller according to claim 8 being mounted to the chiller body.
10. A storage medium storing program instructions which, when executed, perform the method for chiller control of any one of claims 1 to 7.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311100428.9A CN117213123A (en) | 2023-08-29 | 2023-08-29 | Method and device for controlling water chiller, water chiller and storage medium |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311100428.9A CN117213123A (en) | 2023-08-29 | 2023-08-29 | Method and device for controlling water chiller, water chiller and storage medium |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024140518A1 (en) * | 2022-12-29 | 2024-07-04 | 青岛海尔空调器有限总公司 | Method and apparatus for controlling water chiller, water chiller, and storage medium |
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- 2023-08-29 CN CN202311100428.9A patent/CN117213123A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024140518A1 (en) * | 2022-12-29 | 2024-07-04 | 青岛海尔空调器有限总公司 | Method and apparatus for controlling water chiller, water chiller, and storage medium |
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