CN113959077A - Control method and device for refrigeration equipment, refrigeration equipment and storage medium - Google Patents

Control method and device for refrigeration equipment, refrigeration equipment and storage medium Download PDF

Info

Publication number
CN113959077A
CN113959077A CN202111089399.1A CN202111089399A CN113959077A CN 113959077 A CN113959077 A CN 113959077A CN 202111089399 A CN202111089399 A CN 202111089399A CN 113959077 A CN113959077 A CN 113959077A
Authority
CN
China
Prior art keywords
compressor
load
coefficient
rotating speed
information
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202111089399.1A
Other languages
Chinese (zh)
Other versions
CN113959077B (en
Inventor
王书森
邓善营
张捷
王铁伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Haier Air Conditioner Gen Corp Ltd
Qingdao Haier Air Conditioning Electric Co Ltd
Haier Smart Home Co Ltd
Original Assignee
Qingdao Haier Air Conditioner Gen Corp Ltd
Qingdao Haier Air Conditioning Electric Co Ltd
Haier Smart Home Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qingdao Haier Air Conditioner Gen Corp Ltd, Qingdao Haier Air Conditioning Electric Co Ltd, Haier Smart Home Co Ltd filed Critical Qingdao Haier Air Conditioner Gen Corp Ltd
Priority to CN202111089399.1A priority Critical patent/CN113959077B/en
Publication of CN113959077A publication Critical patent/CN113959077A/en
Application granted granted Critical
Publication of CN113959077B publication Critical patent/CN113959077B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F25B49/022—Compressor control arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/20—Heat-exchange fluid temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/50—Load
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Thermal Sciences (AREA)
  • Air Conditioning Control Device (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

The application relates to the technical field of refrigeration equipment, and discloses a control method for the refrigeration equipment, which comprises the steps of obtaining the water temperature information of chilled water exchanging heat with an evaporator; determining load information and an energy coefficient of the compressor according to the water temperature information; determining a first load coefficient corresponding to the current rotating speed of the compressor according to the rotating speed of the compressor and the load information; and adjusting the current rotating speed of the compressor according to the energy coefficient and the first load coefficient so as to obtain the target rotating speed of the compressor. The method can improve the stability of the water temperature control of the refrigeration equipment. The application also discloses a control device for the refrigeration equipment, the refrigeration equipment and a storage medium.

Description

Control method and device for refrigeration equipment, refrigeration equipment and storage medium
Technical Field
The present application relates to the technical field of refrigeration equipment, and for example, to a control method and apparatus for refrigeration equipment, and a storage medium.
Background
At present, water cooling equipment belongs to refrigeration equipment and is commonly used in building air conditioners. The water chiller is typically configured with an air suspension compressor or a gas-liquid mixture compressor. Taking the air suspension compressor as an example, the air suspension compressor is provided with an air suspension bearing, which belongs to power equipment which utilizes the pressure generated by air between the bearing and a rotor to support the rotor to run. In the operation process of the refrigeration equipment, the temperature value of the chilled water needs to be monitored in real time, and the stability of the temperature value of the chilled water is kept by adjusting various parameters of the refrigeration equipment.
In order to maintain the stability of the temperature of the chilled water, the conventional refrigeration equipment generally adopts a mode of adjusting the rotating speed of a gas suspension compressor or a gas-liquid mixing compressor. However, during the operation of the refrigeration equipment, the gas suspension or gas-liquid mixture compressor may surge, and the operation reliability of the compressor is obviously reduced after the compressor surges, which may adversely affect the stability of the temperature of the chilled water.
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 traditional refrigeration equipment has the defect of unstable water temperature control.
Disclosure of Invention
The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.
The embodiment of the disclosure provides a control method and device for refrigeration equipment, the refrigeration equipment and a medium, so as to improve the stability of water temperature control of the refrigeration equipment.
In some embodiments, the method includes obtaining water temperature information of chilled water exchanging heat with an evaporator; determining load information and an energy coefficient of the compressor according to the water temperature information; determining a first load coefficient corresponding to the current rotating speed of the compressor according to the rotating speed of the compressor and the load information; and adjusting the current rotating speed of the compressor according to the energy coefficient and the first load coefficient so as to obtain the target rotating speed of the compressor.
In some embodiments, the apparatus comprises a processor and a memory storing program instructions, the processor being configured to execute the control method for a refrigeration appliance as described above when executing the program instructions.
In some embodiments, the centrifugal refrigeration device comprises a control device for a refrigeration device as described above.
In some embodiments, the storage medium stores program instructions that, when executed, perform a control method for a refrigeration appliance as previously described.
The control method and device for the refrigeration equipment, the refrigeration equipment and the medium provided by the embodiment of the disclosure can realize the following technical effects:
the centrifugal refrigeration equipment determines the load information and the energy coefficient of the compressor according to the water temperature information of chilled water exchanging heat with the evaporator, and then determines a first load coefficient corresponding to the current rotating speed of the compressor according to the rotating speed and the load information of the compressor, so that the load adding and reducing components of the rotating speed of the compressor are accurately obtained, the current rotating speed of the compressor is adjusted according to the first load coefficient and the energy coefficient, the refrigeration equipment can realize accurate adjustment of the rotating speed of the compressor according to the water temperature information of the chilled water, and the stability of water temperature control of the refrigeration equipment is improved.
The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:
FIG. 1 is a system schematic of a centrifugal refrigeration apparatus provided by an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of a control method for a refrigeration appliance provided by an embodiment of the present disclosure;
FIG. 3 is a schematic diagram of another control method for a refrigeration appliance provided by an embodiment of the present disclosure;
FIG. 4 is a schematic diagram of another control method for a refrigeration appliance provided by an embodiment of the present disclosure;
FIG. 5 is a schematic diagram of another control method for a refrigeration appliance provided by an embodiment of the present disclosure;
FIG. 6 is a schematic diagram of another control method for a refrigeration appliance provided by an embodiment of the present disclosure;
FIG. 7 is a schematic diagram of another control method for a refrigeration appliance provided by an embodiment of the present disclosure;
FIG. 8 is a schematic diagram of another control method for a refrigeration appliance provided by an embodiment of the present disclosure;
FIG. 9 is a graph of water temperature information of chilled water as a function of energy factor provided by an embodiment of the present disclosure;
FIG. 10 is a schematic diagram of a control device for a refrigeration appliance provided by an embodiment of the present disclosure;
fig. 11 is a schematic diagram of another control device for a refrigeration appliance provided by an embodiment of the present disclosure.
Detailed Description
So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.
The terms "first," "second," and the like in the description and in the claims, and the above-described drawings of embodiments of the present disclosure, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the present disclosure described herein may be made. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.
The term "plurality" means two or more unless otherwise specified.
In the embodiment of the present disclosure, the character "/" indicates that the preceding and following objects are in an or relationship. For example, A/B represents: a or B.
The term "and/or" is an associative relationship that describes objects, meaning that three relationships may exist. For example, a and/or B, represents: a or B, or A and B.
The term "correspond" may refer to an association or binding relationship, and a corresponds to B refers to an association or binding relationship between a and B.
Referring to fig. 1, a system diagram of a centrifugal refrigeration apparatus is provided in an embodiment of the present disclosure, where the centrifugal refrigeration apparatus includes a refrigerant circulation loop, an air supply system, and a control assembly. The refrigerant circulation circuit includes a compressor 10, an evaporator 20, a throttling element and a condenser 40 which are sequentially communicated through a pipeline. The air supply system includes an air supply tank 30. The air supply tank 30 is provided in communication with the compressor 10 and the evaporator 20. The control assembly can be used for executing the control method of the refrigeration equipment. The compressor 10 may be an air-suspension compressor provided with an air-suspension bearing, or may be a gas-liquid mixture compressor.
Referring to fig. 2, an embodiment of the present disclosure provides a control method for a refrigeration apparatus, including:
and S01, the centrifugal refrigeration equipment acquires the water temperature information of the chilled water exchanging heat with the evaporator.
And S02, the centrifugal refrigeration equipment determines the load information and the energy coefficient of the compressor according to the water temperature information.
And S03, the centrifugal refrigeration equipment determines a first load coefficient corresponding to the current rotating speed of the compressor according to the rotating speed and the load information of the compressor.
And S04, the centrifugal refrigeration equipment adjusts the current rotating speed of the compressor according to the energy coefficient and the first load coefficient so as to obtain the target rotating speed of the compressor.
By adopting the control method for the refrigeration equipment provided by the embodiment of the disclosure, the centrifugal refrigeration equipment determines the load information and the energy coefficient of the compressor according to the water temperature information of the chilled water exchanging heat with the evaporator, and then determines the first load coefficient corresponding to the current rotating speed of the compressor according to the rotating speed and the load information of the compressor, so that the load component of the rotating speed of the compressor can be accurately obtained, and then the current rotating speed of the compressor is adjusted according to the first load coefficient and the energy coefficient, so that the refrigeration equipment can realize the accurate adjustment of the rotating speed of the compressor according to the water temperature information of the chilled water, and further the stability of the water temperature control of the refrigeration equipment is improved.
It can be understood that, the information of the water temperature of the chilled water exchanging heat with the evaporator may be obtained by setting a temperature sensor at the outlet of the chilled water of the evaporator 10, and detecting the information of the water temperature of the chilled water by the temperature sensor.
With reference to fig. 3, an embodiment of the present disclosure further provides a control method for a refrigeration apparatus, including:
and S11, the centrifugal refrigeration equipment acquires the water temperature information of the chilled water exchanging heat with the evaporator.
And S12, the centrifugal refrigeration equipment determines the load information and the energy coefficient of the compressor according to the water temperature information.
S13, the centrifugal refrigeration equipment acquires surge information of the compressor.
And S14, the centrifugal refrigeration equipment determines a first load coefficient corresponding to the current rotating speed of the compressor according to the matching condition of the rotating speed of the compressor and the surge information and the load information.
And S15, the centrifugal refrigeration equipment adjusts the current rotating speed of the compressor according to the energy coefficient and the first load coefficient so as to obtain the target rotating speed of the compressor.
By adopting the control method for the refrigeration equipment provided by the embodiment of the disclosure, the refrigeration equipment belongs to a centrifugal unit, and surge can occur in the operation process of a compressor of the centrifugal unit. Since the operation stability of the compressor is reduced after the compressor generates surge, whether the compressor generates surge or not needs to be judged according to the matching condition of the rotating speed of the compressor and surge information, and then a first load coefficient corresponding to the current rotating speed of the compressor is determined according to the matching condition of the rotating speed and the surge information and load information. Therefore, on the basis of regulating the rotating speed of the compressor according to the water temperature information of the chilled water, the running stability of the compressor is brought into the factor of regulating the rotating speed of the compressor, and the stability of controlling the water temperature of the refrigeration equipment is further improved.
As shown in fig. 4, the surge information includes a surge section corresponding to the surge speed. According to the matching condition of the rotating speed of the compressor and the surge information and the load information, determining a first load coefficient corresponding to the current rotating speed of the compressor, wherein the method comprises the following steps:
s21, the centrifugal refrigeration equipment determines the first coefficient as a first load coefficient under the condition that the load information shows that the compressor is in a loading state and the current rotating speed of the compressor is in a surge region.
And S22, determining the second coefficient as the first load coefficient by the centrifugal refrigeration equipment under the condition that the load information indicates that the compressor is in a loading state and the current rotating speed of the compressor is outside the surge region.
Wherein the first coefficient is greater than the second coefficient.
Like this, when judging that the compressor is in the loading state according to the load information, judge whether the current rotational speed of compressor is located the surge interval, when the current rotational speed is located the surge interval, because the current rotational speed of the compressor that is in the loading state progressively increases, must not take place the surge at current rotational speed progressively increase in-process, so, need quick loading to break away from the surge interval, be greater than the second coefficient through setting up first coefficient, can make the compressor break away from the surge interval fast to promote the reliability of compressor operation fast.
Optionally, the first coefficient is greater than or equal to 0.1 and the first coefficient is less than or equal to 10. The second coefficient is greater than or equal to 0.1 and the second coefficient is less than or equal to 10.
Referring to fig. 5, the surge information includes a surge section corresponding to a surge speed of the compressor, and the first load factor corresponding to a current rotation speed of the compressor is determined based on a matching condition between the rotation speed of the compressor and the surge information and the load information, and includes:
and S31, the centrifugal refrigeration equipment determines the third coefficient as the first load coefficient when the load information shows that the compressor is in the load relief state and the current rotating speed of the compressor is in the surge region.
And S32, the centrifugal refrigeration equipment determines the fourth coefficient as the first load coefficient when the load information shows that the compressor is in the load shedding state and the current rotating speed of the compressor is outside the surge region.
Wherein the third coefficient is less than the fourth coefficient.
Optionally, the third coefficient is greater than or equal to 0.1 and the third coefficient is less than or equal to 10. The fourth coefficient is greater than or equal to 0.1 and the fourth coefficient is less than or equal to 10.
Therefore, when the compressor is judged to be in the load shedding state according to the load information, whether the current rotating speed of the compressor is in the surge interval or not is judged, when the current rotating speed is in the surge interval, the current rotating speed of the compressor in the load shedding state is gradually reduced, if the load shedding is fast, the current rotating speed of the compressor after the load shedding is close to or even equal to the surge speed, so that the compressor needs to be slowly unloaded to be separated from the surge interval, and the compressor can be slowly separated from the surge interval by setting the third coefficient to be greater than the fourth coefficient, so that the running reliability of the compressor is fast improved.
Optionally, as shown in fig. 6, determining load information of the compressor according to the water temperature information includes:
s41, determining that the load information is in a loading state by the centrifugal refrigeration equipment under the condition that the water temperature information is greater than the preset water temperature and the energy coefficient corresponding to the water temperature information is in the linear loading area.
And S42, determining that the load information is in the load shedding state by the centrifugal refrigeration equipment under the condition that the current water temperature information is less than or equal to the preset water temperature and the energy coefficient corresponding to the water temperature information is in the linear unloading area.
Therefore, as the water temperature information of the chilled water has a functional relation with the energy coefficient, and the load information of the compressor can be reflected by the positive and negative of the energy coefficient, the load information of the compressor can be determined according to the relation between the water temperature information and the preset water temperature information and the corresponding relation between the energy coefficient and the linear loading area/linear unloading area.
Optionally, as shown in fig. 9, the functional relationship between the water temperature information of the chilled water and the energy coefficient is as follows:
Figure BDA0003266761460000071
wherein, K0Represents the energy coefficient in%. T iscIndicates water temperature information in degrees celsius. T iscThe energy coefficient corresponding to-D is located in the fast unloading area, -D<TcThe energy coefficient corresponding to-C is positioned in the linear unloading zone, A is less than or equal to Tc<The energy coefficient corresponding to B is in the linear loading region, TcThe energy coefficient corresponding to B or more is located in the fast loading area. -C<Tc<The energy coefficient corresponding to 0 is in the negative dead zone, 0<Tc<The energy coefficient corresponding to A is positioned in a positive dead zone. It is noted that A, B, C, D are positive numbers and that-D represents the water temperature boundary between the rapid unloading zone and the linear unloading zone and B represents the water temperature boundary between the linear loading zone and the rapid loading zone. A. B, C, D is determined by the type of compressor, etcAnd (4) determining factors.
According to the functional relation, when the water temperature information is in the positive dead zone or the negative dead zone, the energy coefficient is zero, and the current rotating speed of the compressor is kept unchanged. And under the condition that the water temperature information is in a region outside the positive dead zone or the negative dead zone, determining the energy coefficient and the loading state or the unloading state of the compressor according to the water temperature information.
In practical application, TcIndicating current water temperature information, TsExpressing a preset water temperature, K expressing a first load factor, K1、K2、K3、K4Representing a first coefficient, a second coefficient, a third coefficient and a fourth coefficient, respectively. v. ofcRepresenting the surge speed, M represents a preset surge offset amount representing the degree of closeness of the rotation speed of the compressor and the surge speed, (0, v)c+M]Indicating surge speed vcThe corresponding surge interval.
When T isc≥TsAnd 0<v≤vcWhen + M, then K ═ K1；
When T isc≥TsAnd v is>vcWhen + M, then K ═ K2；
When T isc<TsAnd 0<v≤vcWhen + M, then K ═ K3；
When T isc<TsAnd v is>vcWhen + M, then K ═ K4；
Therein, 10>K1>K2>0.1，10>K4>K3>0.1。
As shown in fig. 7, an embodiment of the present disclosure further provides a control method for a refrigeration apparatus, including:
and S51, the centrifugal refrigeration equipment acquires the water temperature information of the chilled water exchanging heat with the evaporator.
And S52, the centrifugal refrigeration equipment determines the load information and the energy coefficient of the compressor according to the water temperature information.
And S53, the centrifugal refrigeration equipment determines a first load coefficient corresponding to the current rotating speed of the compressor according to the rotating speed and the load information of the compressor.
And S54, the centrifugal refrigeration equipment multiplies the energy coefficient by the first load coefficient to determine a target load coefficient.
And S55, the centrifugal refrigerating equipment multiplies the target load coefficient and the highest rotating speed of the compressor to determine a target load component.
And S56, the centrifugal refrigeration equipment adds the target load component and the current rotating speed to determine a new target rotating speed of the compressor.
By adopting the control method for the refrigeration equipment provided by the embodiment of the disclosure, the centrifugal water cooling sound can determine the first load coefficient corresponding to the current rotating speed according to the rotating speed and the load information of the compressor, then the energy coefficient is multiplied by the first load coefficient to determine the target load coefficient, and then the target load coefficient is multiplied by the highest rotating speed to determine the target load component. The method can quickly and accurately determine the target rotating speed, can quickly stabilize the temperature of the chilled water, and improves the efficiency of adjusting the rotating speed of the compressor.
With reference to fig. 8, an embodiment of the present disclosure further provides a control method for a refrigeration apparatus, including:
and S61, the centrifugal refrigeration equipment acquires the water temperature information of the chilled water exchanging heat with the evaporator.
And S62, the centrifugal refrigeration equipment determines the load information and the energy coefficient of the compressor according to the water temperature information.
And S63, the centrifugal refrigeration equipment determines a first load coefficient corresponding to the current rotating speed of the compressor according to the rotating speed and the load information of the compressor.
And S64, the centrifugal refrigeration equipment multiplies the energy coefficient by the first load coefficient to determine a target load coefficient.
And S65, the centrifugal refrigerating equipment multiplies the target load coefficient and the highest rotating speed of the compressor to determine a target load component.
And S66, the centrifugal refrigeration equipment obtains the change rate of the water temperature of the chilled water exchanging heat with the evaporator.
And S67, when the change rate of the centrifugal refrigeration equipment is greater than the preset change rate, obtaining a second load coefficient according to the change rate, and determining a third load coefficient according to the product of the second load coefficient and the absolute value of the energy coefficient.
And S68, the centrifugal refrigerating equipment multiplies the sum of the third load coefficient and the target load coefficient by the highest rotating speed to determine a new target load component.
And S69, the centrifugal refrigerating equipment adds the new target load component and the current rotating speed to determine the new target rotating speed of the compressor.
By adopting the control method for the refrigeration equipment provided by the embodiment of the disclosure, whether the water temperature information of the chilled water is stable can be determined through the change rate of the water temperature, therefore, on the basis of determining the target load component, a second load coefficient can be determined according to the change rate of the water temperature of the chilled water, a third load coefficient is determined according to the second load coefficient and the absolute value of the energy coefficient, and a product is obtained according to the maximum rotating speed and the sum of the third load coefficient and the target load coefficient, so that a new target load component is determined. The method can give consideration to the information of the water temperature of the chilled water, the operation stability of the compressor and the rising and falling trend of the water temperature of the chilled water, and further quickly improves the operation reliability of the compressor.
Optionally, obtaining the second load coefficient according to the change rate includes:
and multiplying the rate of change by the weighting factor to determine a second loading factor. Wherein the weighting factor can be determined according to the type of the compressor, and the like. As an example, the weighting factor has a value range of [0.1,5 ].
In practical application, the target rotation speed is calculated according to the following formula:
Figure BDA0003266761460000091
wherein, K0Representing an energy coefficient, K representing a first load coefficient, Δ T representing duration information of a preset time period, Δ TcRepresents the amount of change in water temperature over a preset period of time at. r represents a target rotation speed of the compressor, rcIndicating the current speed of the compressor, rhIndicating the maximum rotational speed of the compressor.
Figure BDA0003266761460000101
Denotes a second load factor, K0The target load factor is represented as a function of,
Figure BDA0003266761460000102
representing the third load factor. N represents a weighting coefficient and 0.1. ltoreq. N.ltoreq.5.
As shown in fig. 10, an embodiment of the present disclosure provides a control apparatus for a refrigeration device, which includes an obtaining module 201, a first determining module 202, a second determining module 203, and an executing module 204. The acquiring module 201 is configured to acquire water temperature information of chilled water exchanging heat with an evaporator; the first determination module 202 is configured to determine load information and an energy coefficient of the compressor according to the water temperature information; the second determination module 203 is configured to determine a first load coefficient corresponding to the current rotation speed of the compressor according to the rotation speed of the compressor and the load information; the execution module 204 is configured to adjust the current rotation speed of the compressor according to the energy coefficient and the first load coefficient to obtain a target rotation speed of the compressor.
By adopting the control device for the refrigeration equipment provided by the embodiment of the disclosure, the stability of water temperature control of the refrigeration equipment is favorably improved.
As shown in fig. 11, the present disclosure provides a control device for a refrigeration apparatus, which includes a processor (processor)100 and a memory (memory) 101. Optionally, the apparatus may also include a Communication Interface (Communication Interface)102 and a bus 103. The processor 100, the communication interface 102, and the memory 101 may communicate with each other via a bus 103. The communication interface 102 may be used for information transfer. The processor 100 may call logic instructions in the memory 101 to execute the control method for the refrigeration appliance of the above-described embodiment.
In addition, the logic instructions in the memory 101 may be implemented in the form of software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as independent products.
The memory 101, which is a computer-readable storage medium, may be used for storing software programs, computer-executable programs, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 100 executes functional applications and data processing by executing program instructions/modules stored in the memory 101, that is, implements the control method for the refrigeration apparatus 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, an application program required for at least one function; the storage data area may store data created according to the use of the terminal device, and the like. In addition, the memory 101 may include a high-speed random access memory, and may also include a nonvolatile memory.
The embodiment of the disclosure provides a centrifugal refrigeration device, which comprises the control device for the refrigeration device.
The disclosed embodiments provide a computer-readable storage medium storing computer-executable instructions configured to perform the above-described control method for a refrigeration appliance.
The disclosed embodiments provide a computer program product comprising a computer program stored on a computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, cause the computer to perform the above-described control method for a refrigeration appliance.
The computer-readable storage medium described above may be a transitory computer-readable storage medium or a non-transitory computer-readable storage medium.
The technical solution of the embodiments of the present disclosure may be embodied in the form of a software product, where the computer software product is stored in a storage medium and includes one or more instructions to enable a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method of the embodiments of the present disclosure. And the aforementioned storage medium may be a non-transitory storage medium comprising: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes, and may also be a transient storage medium.
The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. Furthermore, the words used in the specification are words of description only and are not intended to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Similarly, the term "and/or" as used in this application is meant to encompass any and all possible combinations of one or more of the associated listed. Furthermore, the terms "comprises" and/or "comprising," when used in this application, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Without further limitation, an element defined by the phrase "comprising an …" does not exclude the presence of other like elements in a process, method or apparatus that comprises the element. In this document, each embodiment may be described with emphasis on differences from other embodiments, and the same and similar parts between the respective embodiments may be referred to each other. For methods, products, etc. of the embodiment disclosures, reference may be made to the description of the method section for relevance if it corresponds to the method section of the embodiment disclosure.
Those of skill in the art would appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software may depend upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the disclosed embodiments. It can be clearly understood by the skilled person that, for convenience and brevity of description, the specific working processes of the system, the apparatus and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments disclosed herein, the disclosed methods, products (including but not limited to devices, apparatuses, etc.) may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units may be merely a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form. The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to implement the present embodiment. In addition, functional units in the embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. In the description corresponding to the flowcharts and block diagrams in the figures, operations or steps corresponding to different blocks may also occur in different orders than disclosed in the description, and sometimes there is no specific order between the different operations or steps. For example, two sequential operations or steps may in fact be executed substantially concurrently, or they may sometimes be executed in the reverse order, depending upon the functionality involved. Each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by special purpose hardware-based systems that perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

Claims (10)

1. A control method for a refrigeration appliance, comprising:
acquiring water temperature information of chilled water exchanging heat with an evaporator;
determining load information and an energy coefficient of the compressor according to the water temperature information;
determining a first load coefficient corresponding to the current rotating speed of the compressor according to the rotating speed of the compressor and the load information;
and adjusting the current rotating speed of the compressor according to the energy coefficient and the first load coefficient so as to obtain the target rotating speed of the compressor.
2. The method of claim 1, wherein determining a first load factor corresponding to a current speed of the compressor based on the speed of the compressor and the load information comprises:
obtaining surge information of the compressor;
and determining a first load coefficient corresponding to the current rotating speed of the compressor according to the matching condition of the rotating speed of the compressor and the surge information and the load information.
3. The method of claim 2, wherein the surge information includes a surge region corresponding to a surge speed, and wherein determining a first load factor corresponding to a current speed of the compressor based on a matching of the speed of the compressor to the surge information and the load information comprises:
determining a first coefficient as the first load coefficient under the condition that the load information indicates that the compressor is in a loading state and the current rotating speed of the compressor is in the surge interval;
determining a second coefficient as the first load coefficient under the condition that the load information indicates that the compressor is in a loading state and the current rotating speed of the compressor is located outside the surge interval;
wherein the first coefficient is greater than the second coefficient.
4. The method of claim 2, wherein the surge information includes a surge region corresponding to a surge speed of the compressor, and wherein determining a first load factor corresponding to a current speed of the compressor based on a matching of the speed of the compressor to the surge information and the load information comprises:
determining a third coefficient as the first load coefficient under the condition that the load information indicates that the compressor is in a load shedding state and the current rotating speed of the compressor is in the surge interval;
determining a fourth coefficient as the first load coefficient under the condition that the load information indicates that the compressor is in a load shedding state and the current rotating speed of the compressor is located outside the surge interval;
wherein the third coefficient is less than the fourth coefficient.
5. The method of claim 3 or 4, wherein determining load information of the compressor based on the water temperature information comprises:
determining the load information to be in a loading state under the condition that the water temperature information is greater than the preset water temperature and the energy coefficient corresponding to the water temperature information is located in a linear loading area;
and determining the load information to be in a load shedding state under the condition that the current water temperature information is less than or equal to the preset water temperature and the energy coefficient corresponding to the water temperature information is in a linear unloading area.
6. The method of any one of claims 1 to 4, wherein said adjusting a current speed of the compressor to obtain a target speed of the compressor based on the energy coefficient and the first load coefficient comprises:
multiplying the energy coefficient by the first load coefficient to determine a target load coefficient;
multiplying the target load coefficient by the highest rotating speed of the compressor to determine a target load component;
and adding the target load component and the current rotating speed to determine a new target rotating speed of the compressor.
7. The method of claim 6, wherein after determining the target load component, further comprising:
acquiring the change rate of the water temperature of the chilled water exchanging heat with the evaporator;
when the change rate is larger than a preset change rate, obtaining a second load coefficient according to the change rate, and determining a third load coefficient according to the product of the second load coefficient and the absolute value of the energy coefficient;
multiplying the sum of the third load coefficient and the target load coefficient by the highest rotation speed to determine a new target load component;
and determining a new target rotating speed of the compressor according to the sum of the new target load component and the current rotating speed.
8. A control device for a refrigeration appliance comprising a processor and a memory storing program instructions, characterized in that the processor is configured to carry out the control method for a refrigeration appliance according to any one of claims 1 to 7 when executing the program instructions.
9. A centrifugal refrigeration apparatus comprising a control device for a refrigeration apparatus as recited in claim 8.
10. A storage medium storing program instructions, characterized in that the program instructions, when executed, perform a control method for a refrigeration appliance according to any one of claims 1 to 7.
CN202111089399.1A 2021-09-16 2021-09-16 Control method and device for refrigeration equipment, refrigeration equipment and storage medium Active CN113959077B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111089399.1A CN113959077B (en) 2021-09-16 2021-09-16 Control method and device for refrigeration equipment, refrigeration equipment and storage medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111089399.1A CN113959077B (en) 2021-09-16 2021-09-16 Control method and device for refrigeration equipment, refrigeration equipment and storage medium

Publications (2)

Publication Number Publication Date
CN113959077A true CN113959077A (en) 2022-01-21
CN113959077B CN113959077B (en) 2023-05-26

Family

ID=79461816

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111089399.1A Active CN113959077B (en) 2021-09-16 2021-09-16 Control method and device for refrigeration equipment, refrigeration equipment and storage medium

Country Status (1)

Country Link
CN (1) CN113959077B (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4282718A (en) * 1979-09-12 1981-08-11 Borg-Warner Corporation Evaporator inlet water temperature control system
CN101782261A (en) * 2010-04-23 2010-07-21 吕红丽 Nonlinear self-adapting energy-saving control method for heating ventilation air-conditioning system
CN106524613A (en) * 2016-11-14 2017-03-22 广东美的暖通设备有限公司 Variable-frequency air-cooled heat pump unit and control method and device thereof
CN108444122A (en) * 2018-02-09 2018-08-24 珠海格力电器股份有限公司 Air conditioning system
CN110529991A (en) * 2019-09-10 2019-12-03 重庆美的通用制冷设备有限公司 The control method and system of air conditioner, air conditioner and computer readable storage medium

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4282718A (en) * 1979-09-12 1981-08-11 Borg-Warner Corporation Evaporator inlet water temperature control system
CN101782261A (en) * 2010-04-23 2010-07-21 吕红丽 Nonlinear self-adapting energy-saving control method for heating ventilation air-conditioning system
CN106524613A (en) * 2016-11-14 2017-03-22 广东美的暖通设备有限公司 Variable-frequency air-cooled heat pump unit and control method and device thereof
CN108444122A (en) * 2018-02-09 2018-08-24 珠海格力电器股份有限公司 Air conditioning system
CN110529991A (en) * 2019-09-10 2019-12-03 重庆美的通用制冷设备有限公司 The control method and system of air conditioner, air conditioner and computer readable storage medium

Also Published As

Publication number Publication date
CN113959077B (en) 2023-05-26

Similar Documents

Publication Publication Date Title
CN113091260B (en) Control method and device for air conditioner and air conditioner
CN104729193A (en) Method and device for controlling fan in air-cooled refrigerator to work at steady speed
CN113639485B (en) Method and device for adjusting exhaust superheat degree of heat pump equipment and heat pump equipment
CN113885600B (en) Method and device for controlling temperature of centrifugal machine, centrifugal machine and storage medium
CN113091231B (en) Control method and device for air conditioner and air conditioner
CN111043737A (en) Method and device for controlling expansion valve and air conditioner
CN114198825A (en) Control method and device for single cooling of chilled water inter-row air conditioner and inter-row air conditioner
CN114738949A (en) Control method and device for mobile air conditioner and mobile air conditioner
CN113983692A (en) Method and device for controlling hot water supply equipment and hot water supply equipment
CN113685984A (en) Method and device for air conditioner control and air conditioner
CN113959077A (en) Control method and device for refrigeration equipment, refrigeration equipment and storage medium
CN115507509A (en) Method and device for controlling water chiller unit, water chiller unit and storage medium
CN113357803B (en) Method and device for controlling electronic expansion valve of air conditioner and air conditioner
CN113819639B (en) Control method and device for adjusting frequency of air conditioner compressor
CN116182369A (en) Method and device for controlling air outlet temperature of air conditioner, air conditioner and storage medium
CN113959111B (en) Heat pump system and method and device for controlling heat pump system
CN115355640A (en) Method and device for controlling water chilling unit, water chilling unit and storage medium
CN115111731A (en) Method and device for controlling air conditioner and air conditioner
CN112594796B (en) Air conditioner air outlet control method and device and air conditioner
JP6890727B1 (en) Air conditioning system and control method
CN109506332B (en) Air speed control method and device of air conditioning system and electronic equipment
CN110542191B (en) Operation control method, operation control device, air conditioner, and storage medium
CN115164300B (en) Method and device for oil return control of air conditioner, air conditioner and storage medium
CN113685991B (en) Control method and device for intelligent air conditioner and intelligent air conditioner
CN113959126B (en) Control method, device, equipment and storage medium for refrigeration equipment

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant