CN113959127B - Control method, device, equipment and medium for air supply system of refrigeration equipment - Google Patents

Control method, device, equipment and medium for air supply system of refrigeration equipment Download PDF

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Publication number
CN113959127B
CN113959127B CN202111096431.9A CN202111096431A CN113959127B CN 113959127 B CN113959127 B CN 113959127B CN 202111096431 A CN202111096431 A CN 202111096431A CN 113959127 B CN113959127 B CN 113959127B
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China
Prior art keywords
air supply
compressor
pressure difference
supply system
preset
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CN202111096431.9A
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Chinese (zh)
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CN113959127A (en
Inventor
王书森
邓善营
张捷
王铁伟
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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
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Priority to CN202111096431.9A priority Critical patent/CN113959127B/en
Publication of CN113959127A publication Critical patent/CN113959127A/en
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    • 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
    • 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
    • F25B31/00—Compressor arrangements
    • 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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/31—Expansion valves
    • F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
    • 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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/40—Fluid line arrangements
    • 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
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • 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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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Power Engineering (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The application relates to the technical field of water cooling equipment and discloses a control method for an air supply system of refrigeration equipment, wherein the air supply system comprises an air supply tank, a bypass pipeline is arranged between the air supply tank and an evaporator, and the method comprises the steps of obtaining the starting state of a compressor; acquiring the air supply pressure difference of the air supply system according to the starting state of the compressor; and controlling the on-off state of the bypass pipeline according to the matching condition of the air supply pressure difference and the preset pressure difference. The method can avoid pressure difference faults of the air supply system when the compressor is started, and improves the operation reliability of the water cooling equipment. The application also discloses a control device, equipment and medium for the air supply system of the refrigeration equipment.

Description

Control method, device, equipment and medium for air supply system of refrigeration equipment
Technical Field
The present disclosure relates to the technical field of refrigeration devices, and for example, to a control method, an apparatus, a device, and a storage medium for an air supply system of a refrigeration device.
Background
At present, water cooling equipment belongs to refrigeration equipment and is quite commonly used in building air conditioners. Water chiller units are typically configured with either a gas suspension compressor or a gas-liquid hybrid compressor. Taking an air suspension compressor as an example, the air suspension compressor is provided with an air suspension bearing, and belongs to power equipment which utilizes the pressure generated by gas between the bearing and a rotor to support the rotor to operate, and the air suspension compressor has a simple structure and a simple control system.
In the operation of the water cooling apparatus, the air supply pressure difference of the air supply system for the compressor needs to be kept stable, and thus, the reliable operation of the air suspension unit can be ensured. However, during the start-up phase of the compressor, the temperature of the cooling water is significantly higher than that of the chilled water, which can lead to a rapid drop in the suction pressure of the compressor, which can adversely affect the pressure difference of the air supplied by the air supply system, and even cause a malfunction of the air supply system.
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:
in the running process of the existing water cooling equipment, when the compressor is started, the pressure difference fault of the air supply system can be caused by the rapid change of the air suction pressure of the compressor, and the running reliability of the water cooling equipment is affected.
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 control method, a control device, control equipment and a control medium for an air supply system of refrigeration equipment, so as to avoid pressure difference faults of the air supply system when a compressor is started and improve the operation reliability of water cooling equipment.
In some embodiments, the air supply system includes an air supply tank with a bypass line disposed between the air supply tank and the evaporator, the method including obtaining a start-up condition of the compressor; acquiring the air supply pressure difference of the air supply system according to the starting state of the compressor; and controlling the on-off state of the bypass pipeline according to the matching condition of the air supply pressure difference and the preset pressure difference.
In some embodiments, the apparatus includes a processor and a memory storing program instructions configured to, when executed, perform a control method for a refrigeration appliance air supply system as previously described.
In some embodiments, the refrigeration appliance comprises a gas supply system configured with a gas supply tank with a bypass line disposed between the gas supply tank and the evaporator, the refrigeration appliance further comprising a control device for the refrigeration appliance gas supply system as previously described.
In some embodiments, the storage medium stores program instructions that, when executed, perform a control method for a refrigeration appliance air supply system as described above.
The control method, the device, the equipment and the storage medium for the air supply system of the refrigeration equipment provided by the embodiment of the disclosure can realize the following technical effects:
when the compressor of the water cooling equipment is started, the air supply pressure difference is in a rapid increasing trend, and the increasing trend of the air supply pressure difference can be judged by comparing the air supply pressure difference with a preset pressure difference. And controlling the on-off of the bypass pipeline according to the matching condition of the air supply pressure difference and the preset pressure difference, so that when the air supply pressure difference is in a rapid increasing trend, the air supply pressure difference is reduced through the conduction of the bypass pipeline, the pressure difference fault of the air supply system is avoided, and the operation reliability of the water cooling 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 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 structural view of a refrigeration apparatus according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of a control method for a refrigeration appliance air supply system provided in accordance with an embodiment of the present disclosure;
FIG. 3 is a schematic diagram of another control method for a refrigeration appliance air supply system provided in an embodiment of the present disclosure;
FIG. 4 is a schematic diagram of another control method for a refrigeration appliance air supply system provided by an embodiment of the present disclosure;
FIG. 5 is a schematic diagram of another control method for a refrigeration appliance air supply system provided in an embodiment of the present disclosure;
FIG. 6 is a schematic diagram of another control method for a refrigeration appliance air supply system provided in an embodiment of the present disclosure;
FIG. 7 is a schematic diagram of another control method for a refrigeration appliance air supply system provided by an embodiment of the present disclosure;
FIG. 8 is a schematic diagram of a control device for a refrigeration appliance air supply system provided in accordance with an embodiment of the present disclosure;
fig. 9 is a schematic diagram of another control device for a refrigeration appliance air supply system provided in an embodiment of the present disclosure.
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.
As shown in connection with fig. 1, an embodiment of the present disclosure provides a refrigeration apparatus including a compressor 10, an evaporator 20, a condenser 40, and an air supply system. The compressor 10, the evaporator 20 and the condenser 40 constitute a refrigerant circulation circuit. The air supply system includes an air supply tank 30, an electrical heating assembly 50, and a controller. A bypass line 60 is provided between the gas supply tank 30 and the evaporator 20. An auxiliary liquid supply line 80 is provided between the gas supply tank 30 and the evaporator 20. The condenser 40 communicates with the evaporator 20 through an economizer 70. Bypass line 60 is provided with an electronic control element 601. The controller is configured to perform a control method for the air supply system of the refrigeration appliance as described below.
The compressor 10 may be a gas suspension compressor provided with a gas suspension bearing, or may be a gas-liquid hybrid compressor. The air supply tank 30 is used for pumping the liquid refrigerant in the evaporator 20 through the auxiliary liquid supply pipeline 80 when the supercooling liquid level after the economizer 70 is pumped by the refrigerant pump or the liquid level of the condenser 40 is low. The electric heating assembly 50 is used for heating the refrigerant in the air supply tank 30 to form a vapor-liquid two-phase refrigerant to be supplied to the compressor 10 so as to supply air to the air suspension bearing of the compressor 10. The refrigerant in the gas supply tank 30 may be a liquid refrigerant or a vapor-liquid two-phase refrigerant.
As shown in connection with fig. 2, an embodiment of the present disclosure further provides a control method for an air supply system of a refrigeration apparatus, including:
s01, the refrigeration equipment acquires the starting state of the compressor.
S02, the refrigeration equipment acquires the air supply pressure difference of the air supply system according to the starting state of the compressor.
S03, controlling the on-off state of the bypass pipeline by the refrigeration equipment according to the matching condition of the air supply pressure difference and the preset pressure difference.
By adopting the control method for the air supply system of the refrigeration equipment, when the compressor starting state of the air suspension unit is starting, the air supply pressure difference is in a rapid increasing trend, and the increasing trend of the air supply pressure difference can be judged by comparing the air supply pressure difference with the preset pressure difference. And controlling the on-off of the bypass pipeline according to the matching condition of the air supply pressure difference and the preset pressure difference, so that when the air supply pressure difference is in a rapid increasing trend, the air supply pressure difference is reduced through the conduction of the bypass pipeline, the pressure difference fault of an air supply system is avoided, and the operation reliability of the air suspension unit is improved.
Optionally, as shown in connection with fig. 3, according to the start state of the compressor, acquiring the air supply pressure difference of the air supply system includes:
s11, when the starting state of the compressor indicates that the compressor is started, the refrigeration equipment acquires bearing exhaust pressure information of the compressor and air supply pressure information of the air supply tank.
S12, the refrigerating equipment obtains the air supply pressure difference of the air supply system according to the difference value of the bearing exhaust pressure information and the air supply pressure information.
Thus, the supply air pressure information refers to the supply air pressure value of the supply air tank, and the bearing exhaust air pressure information refers to the bearing exhaust air pressure value in the compressor. The air supply pressure difference is the difference between the pressure value of the air supply tank and the bearing exhaust pressure value of the compressor, and because the change trend of the bearing exhaust pressure value and the pressure value of the evaporator is consistent, when the compressor of the air suspension unit is started, the pressure value of the evaporator is rapidly reduced, therefore, when the pressure value of the evaporator is rapidly reduced, the bearing exhaust pressure is also rapidly reduced, the pressure value of the air supply tank is basically maintained, the air supply pressure difference is rapidly increased, the air supply pressure difference is compared with the preset pressure difference, and the on-off of the bypass pipeline is controlled according to the matching condition of the air supply pressure difference and the preset pressure difference, so that when the air supply pressure difference is rapidly increased, the pressure value of the vapor-liquid two-phase refrigerant in the air supply tank is reduced through the conduction of the bypass pipeline, the pressure difference fault of the air supply system is avoided, and the operation reliability of the air suspension unit is improved.
As shown in conjunction with fig. 4, an embodiment of the present disclosure further provides a control method for an air supply system of a refrigeration device, where the preset pressure difference includes a first preset pressure value, the method including:
s21, the refrigeration equipment acquires the starting state of the compressor.
S22, the refrigeration equipment acquires the air supply pressure difference of the air supply system according to the starting state of the compressor.
S23, the refrigeration equipment acquires the on-off state of the bypass pipeline.
S24, under the condition that the on-off state of the bypass pipeline is disconnected and the air supply pressure difference is larger than a first preset pressure value, the refrigeration equipment controls the electric control element to execute a control instruction for opening so as to control the on-off state of the bypass pipeline to be switched into opening.
By adopting the control method for the air supply system of the refrigeration equipment, when the on-off state of the bypass pipeline is disconnected and the air supply pressure difference is larger than the first preset pressure value, the air supply system is indicated to have a high pressure value of the vapor-liquid two-phase refrigerant in the air supply tank, and the pressure difference fault is most likely to occur, at the moment, the bypass pipeline is controlled to be opened, so that the vapor-liquid two-phase refrigerant of the air supply tank is guided into the evaporator through the opening of the bypass pipeline, and the operation reliability of the air suspension unit is improved.
As shown in conjunction with fig. 5, an embodiment of the present disclosure further provides a control method for an air supply system of a refrigeration device, where the preset pressure difference includes a first preset pressure value, the method including:
s31, the refrigeration equipment acquires the starting state of the compressor.
S32, the refrigeration equipment acquires the air supply pressure difference of the air supply system according to the starting state of the compressor.
S33, the refrigeration equipment acquires the on-off state of the bypass pipeline.
S34, under the condition that the on-off state of the bypass pipeline is disconnected and the air supply pressure difference is larger than a first preset pressure value, the refrigeration equipment controls the electric control element to execute a control instruction for opening so as to control the on-off state of the bypass pipeline to be switched into opening.
S35, the refrigeration equipment acquires starting time information of the compressor.
S36, the refrigeration equipment acquires time delay time length information of the compressor under the condition that the starting time length information indicates that the starting of the compressor is completed.
And S37, under the condition that the delay time information indicates the turn-off delay of the compressor after the delay time is preset, the refrigeration equipment controls the electric control element to execute a turn-off control instruction.
By adopting the control method for the air supply system of the refrigeration equipment, after the vapor-liquid two-phase refrigerant of the air supply tank is led into the evaporator through the bypass pipeline, the pressure value of the air supply tank is in a descending trend. When the start-up time information indicates that the compressor is started, and then the start-up time information indicates that the start-up time is delayed for a preset time delay, at the moment, the air supply pressure difference is basically stable, and the vapor-liquid two-phase refrigerant of the air supply tank is not required to be continuously led into the evaporator, so that the control instruction of the start-up is controlled to be executed by the electric control element, and the air supply pressure difference is continuously kept stable.
Optionally, the compressor start-up completion is determined as follows:
the starting time length information is matched with the preset starting time length. As an example, the start duration information is matched with the preset start duration, or the start duration information is greater than or equal to the preset start duration information, or the start duration information is located in a preset range corresponding to the preset start duration.
Optionally, the compressor is turned off after a preset delay time is determined according to the following manner:
the delay time information is matched with a preset delay time. As an example, the delay time information is matched with a preset delay time, or the delay time information is located in a preset range corresponding to the preset delay time.
The preset delay time can be preset by the refrigeration equipment. As one example, the preset delay time is greater than or equal to 1 second or less than or equal to 200 seconds.
As shown in fig. 6, an embodiment of the present disclosure further provides a control method for an air supply system of a refrigeration apparatus, where the preset pressure difference includes a first preset pressure value, the method including:
s41, the refrigeration equipment acquires the starting state of the compressor.
S42, the refrigeration equipment acquires the air supply pressure difference of the air supply system according to the starting state of the compressor.
S43, the refrigeration equipment acquires the on-off state of the bypass pipeline.
S44, under the condition that the on-off state of the bypass pipeline is disconnected and the air supply pressure difference is larger than a first preset pressure value, the refrigeration equipment controls the electric control element to execute a control instruction for opening so as to control the on-off state of the bypass pipeline to be switched into opening.
S45, the refrigerating equipment acquires the air supply pressure difference again.
S46, under the condition that the new air supply pressure difference is smaller than the preset air supply pressure difference, the refrigerating equipment controls the electric control element to execute a control instruction of turning off.
By adopting the control method for the air supply system of the refrigeration equipment, when the new air supply pressure difference is smaller than the preset air supply pressure difference, the air supply pressure difference is basically stable, and at the moment, the vapor-liquid two-phase refrigerant of the air supply tank is not required to be continuously led into the evaporator, so that the control instruction of turning off is controlled to be executed by the electric control element, and the air supply pressure difference is continuously kept stable.
As shown in fig. 7, an embodiment of the present disclosure further provides a control method for an air supply system of a refrigeration apparatus, where the preset pressure difference includes a first preset pressure value, the method including:
s51, the refrigeration equipment acquires the starting state of the compressor.
S52, the refrigeration equipment acquires the air supply pressure difference of the air supply system according to the starting state of the compressor.
S53, the refrigeration equipment acquires the on-off state of the bypass pipeline.
S54, under the condition that the on-off state of the bypass pipeline is disconnected and the air supply pressure difference is larger than a first preset pressure value, the refrigeration equipment controls the electric control element to execute a control instruction for starting so as to control the on-off state of the bypass pipeline to be switched to be started.
S55, the refrigerating equipment acquires a new air supply pressure difference of the air supply system again.
S56, under the condition that the new air supply pressure difference is matched with the second preset pressure value, the refrigeration equipment controls the electric control element to execute a control instruction of turning off.
Wherein the second preset pressure value is smaller than the first preset pressure value.
By adopting the control method for the air supply system of the refrigeration equipment, after the vapor-liquid two-phase refrigerant of the air supply tank is led into the evaporator through the bypass pipeline, the pressure value of the air supply tank is in a descending trend. Typically, the electronic control element is regulated by means of PID. In the process of performing pressure regulation in a PID mode, the pressure value of the air supply tank floats to a certain extent, when the pressure value of the air supply tank is reduced to a second preset pressure value, the trend of rapidly increasing the air supply pressure difference is indicated to be effectively controlled, and at the moment, the gas-liquid two-phase refrigerant of the air supply tank is not required to be drained into the evaporator, so that the new air supply pressure difference of the air supply system is acquired again, and when the new air supply pressure difference is matched with the second preset pressure value, the control instruction of turning off is controlled by the electric control element.
It should be noted that the new air supply pressure difference is matched with the second preset pressure value, which may be that the new air supply pressure difference is smaller than or equal to the second preset pressure value, or that the new air supply pressure difference is located in a preset range corresponding to the second preset pressure value.
Optionally, the first preset pressure value and the second preset pressure value are determined in the following manner:
a first preset pressure value is determined based on a shut-off pressure threshold of the electrical heating assembly. A second preset pressure value is determined based on the drive pressure threshold of the electrical heating assembly.
Optionally, the first preset pressure value is greater than or equal to a sum of a shut-off pressure threshold of the electrical heating assembly and the first pressure differential component.
Wherein the first pressure differential component is greater than or equal to 1kPa and less than or equal to 100kPa.
Optionally, the second preset pressure value is greater than or equal to a sum of a starting pressure threshold of the electric heating assembly and the second differential pressure component.
The second pressure differential component is greater than or equal to 1kPa and less than or equal to 100kPa.
Optionally, the electronic control element includes an electronic expansion valve, and the control instruction for controlling the electronic control element to execute the opening includes:
and controlling the electronic expansion valve to be opened at a preset opening degree.
Therefore, the opening degree of the electronic expansion valve can be controlled to control the flow of the refrigerant in the opened bypass pipeline, and the operation reliability of the air suspension unit is further improved.
Alternatively, the electric control element may be a solenoid valve or a pressure regulating valve.
In practice, a bypass line 60 is provided between the air supply tank 30 and the evaporator 20. The bypass line 60 is provided with an electronic expansion valve. The control method for the air supply system of the refrigeration equipment comprises the following steps:
first, the controller obtains the start state of the compressor as start, and obtains the air supply pressure difference of the air supply system according to the start state.
And secondly, the controller acquires that the on-off state of the bypass pipeline is disconnected, and the air supply pressure difference is larger than a first preset pressure value through judgment, so that the electronic expansion valve is controlled to be opened by the preset opening degree, the on-off state of the bypass pipeline is controlled to be switched to be opened, so that the vapor-liquid two-phase refrigerant of the air supply tank is led into the evaporator, and pressure relief is realized.
And finally, after the electronic expansion valve is opened for a preset time, the controller acquires a new air supply pressure difference again, and the new air supply pressure difference is smaller than a second preset pressure value after judging. Therefore, the completion of pressure release of the electronic expansion valve is determined, and the controller controls the electronic expansion valve to be turned off.
As shown in conjunction with fig. 8, an embodiment of the present disclosure provides a control apparatus for a refrigeration equipment air supply system, including an acquisition module 201, a determination module 202, and an execution module 203. The acquisition module 201 is configured to acquire a start state of the compressor; the determining module 202 is configured to obtain a gas supply pressure difference of the gas supply system according to a start state of the compressor; the execution module 203 is configured to control the on-off state of the bypass pipeline according to the matching condition of the air supply pressure difference and a preset pressure difference.
By adopting the control device for the air supply system of the refrigeration equipment, which is provided by the embodiment of the disclosure, the pressure difference fault of the air supply system can be avoided, and the operation reliability of the air suspension unit is improved.
As shown in connection with fig. 9, an embodiment of the present disclosure provides a control apparatus for a refrigeration appliance air supply system, including a processor (processor) 100 and a memory (memory) 101. Optionally, the apparatus may further comprise 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 the bus 103. The communication interface 102 may be used for information transfer. The processor 100 may invoke logic instructions in the memory 101 to perform the control method for the refrigeration appliance air supply system of the above-described embodiment.
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 100 executes functional applications and data processing by running program instructions/modules stored in the memory 101, i.e., implements the control method for the air supply system of the refrigeration appliance 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.
The embodiment of the disclosure provides a refrigeration device, which comprises the control device for an air supply system of the refrigeration device.
Embodiments of the present disclosure provide a computer-readable storage medium storing computer-executable instructions configured to perform the above-described control method for a refrigeration appliance air supply system.
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 air supply system.
The computer readable storage medium may be a transitory computer readable storage medium or a non-transitory computer readable 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 application is meant to encompass any and all possible combinations of one or more of the associated listed. Furthermore, when used in this application, the terms "comprises," "comprising," and/or "includes," and variations thereof, mean that the stated features, integers, steps, operations, elements, and/or components are present, but that the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof is not precluded. 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 (8)

1. A control method for a refrigeration equipment air supply system including an air supply tank, characterized in that a bypass line is provided between the air supply tank and an evaporator, the method comprising:
acquiring the starting state of a compressor;
acquiring the air supply pressure difference of the air supply system according to the starting state of the compressor, wherein the air supply pressure difference is the difference value between the pressure value of an air supply tank and the bearing exhaust pressure value of the compressor;
controlling the on-off state of the bypass pipeline according to the matching condition of the air supply pressure difference and the preset pressure difference;
the preset differential pressure comprises a first preset pressure value, the bypass pipeline is provided with an electric control element, and the on-off state of the bypass pipeline is controlled according to the matching condition of the air supply differential pressure and the preset differential pressure, and the method comprises the following steps:
acquiring the on-off state of the bypass pipeline;
when the on-off state of the bypass pipeline is disconnected and the air supply pressure difference is larger than a first preset pressure value, the electric control element is controlled to execute an on-off control instruction so as to control the on-off state of the bypass pipeline to be switched to be on, the vapor-liquid two-phase refrigerant of the air supply tank is led into the evaporator through the bypass pipeline, and the pressure value of the vapor-liquid two-phase refrigerant in the air supply tank is reduced;
the step of obtaining the air supply pressure difference of the air supply system according to the starting state of the compressor comprises the following steps:
acquiring bearing exhaust pressure information of the compressor and air supply pressure information of the air supply tank under the condition that the starting state of the compressor indicates that the compressor is started;
and obtaining the air supply pressure difference of the air supply system according to the bearing exhaust pressure information and the difference value of the air supply pressure information.
2. The method of claim 1, wherein after the controlling the electronic control element to execute the on control command, further comprising:
acquiring starting time information of the compressor;
acquiring time delay time length information of the compressor under the condition that the starting time length information indicates that the starting of the compressor is completed;
under the condition that the delay time information indicates that the compressor is turned off for delay after delay time is preset, the control instruction for turning off is controlled to be executed by the electric control element; or alternatively, the process may be performed,
re-acquiring the air supply pressure difference;
and under the condition that the new air supply pressure difference is smaller than the preset air supply pressure difference, controlling the electric control element to execute a control instruction of turning off.
3. The method of claim 1, wherein the predetermined pressure differential further comprises a second predetermined pressure value, and wherein after the control command to turn on is executed by the electronic control element, further comprising:
re-acquiring a new air supply pressure difference of the air supply system;
under the condition that the new air supply pressure difference is matched with a second preset pressure value, the electric control element is controlled to execute a control instruction of turning off;
wherein the second preset pressure value is less than the first preset pressure value.
4. The method of claim 3, wherein the gas supply system further comprises an electrical heating assembly for heating the gas-liquid two-phase refrigerant of the gas supply tank to form a gas-liquid two-phase refrigerant for supply to the compressor, the first and second preset pressure values being determined as follows:
determining the first preset pressure value according to a turn-off pressure threshold of the electric heating assembly;
and determining the second preset pressure value according to the driving pressure threshold value of the electric heating assembly.
5. The method of any one of claims 1 to 4, wherein the electronic control element comprises an electronic expansion valve, the controlling the electronic control element to execute an open control command comprising:
and controlling the electronic expansion valve to be opened at a preset opening degree.
6. A control apparatus for a refrigeration appliance air supply system comprising a processor and a memory storing program instructions, wherein the processor is configured, when executing the program instructions, to perform the control method for a refrigeration appliance air supply system of any one of claims 1 to 5.
7. A refrigeration apparatus comprising a gas supply system provided with a gas supply tank, characterized in that a bypass line is provided between the gas supply tank and the evaporator, the refrigeration apparatus further comprising a control device for a refrigeration apparatus gas supply system according to claim 6.
8. A storage medium storing program instructions which, when executed, perform the control method for a refrigeration appliance air supply system of any one of claims 1 to 5.
CN202111096431.9A 2021-09-16 2021-09-16 Control method, device, equipment and medium for air supply system of refrigeration equipment Active CN113959127B (en)

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