CN114508868A - Refrigeration device, refrigeration control method and system - Google Patents
Refrigeration device, refrigeration control method and system Download PDFInfo
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- CN114508868A CN114508868A CN202111678122.2A CN202111678122A CN114508868A CN 114508868 A CN114508868 A CN 114508868A CN 202111678122 A CN202111678122 A CN 202111678122A CN 114508868 A CN114508868 A CN 114508868A
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- refrigeration
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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
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61C—LOCOMOTIVES; MOTOR RAILCARS
- B61C17/00—Arrangement or disposition of parts; Details or accessories not otherwise provided for; Use of control gear and control systems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D27/00—Heating, cooling, ventilating, or air-conditioning
- B61D27/0018—Air-conditioning means, i.e. combining at least two of the following ways of treating or supplying air, namely heating, cooling or ventilating
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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
Abstract
The embodiment of the invention discloses a refrigerating device, a control method and a system, wherein the refrigerating device comprises two groups of parallel refrigerating systems; the refrigerating system comprises a liquid path refrigerating structure and a bypass refrigerating pipeline communicated with the designated position of the liquid path refrigerating structure; when the liquid path refrigeration structure is started and the bypass refrigeration pipeline is opened, the refrigeration system can provide refrigeration with a preset level; the designated position is any one of the following communication modes: one end of the bypass refrigeration pipeline is communicated with a pipeline at the inlet of the condenser or a pipeline at the outlet of the condenser in the liquid path refrigeration structure, and the other end of the bypass refrigeration pipeline is communicated with a pipeline at the inlet of the evaporator in the liquid path refrigeration structure; one end of the bypass refrigeration pipeline is communicated with a condenser inlet pipeline in the liquid path refrigeration structure, and the other end of the bypass refrigeration pipeline is communicated with a pipeline at the outlet of an evaporator in the liquid path refrigeration structure. The refrigerating device, the control method and the system can provide multi-stage refrigeration grade adjustment, so that the temperature change of the rail vehicle is balanced, the control is more flexible, and the comfort of passengers is improved.
Description
Technical Field
The invention relates to the technical field of air conditioning control of rail vehicles, in particular to a refrigerating device, a refrigerating control method and a refrigerating control system.
Background
Along with the development of cities, the passenger capacity of urban rail transit such as subway, tram and other rail vehicles is greatly increased, and the requirement of passengers on the comfort level is higher and higher. In the existing vehicle air conditioning technology, a fixed-frequency air conditioning unit generally has only 1 or 2 sets of refrigeration cycles.
Air conditioning is typically required to operate to provide different levels of cooling when the vehicle thermal load changes. Due to the design of double refrigeration cycles, the traditional vehicle can achieve two refrigeration levels of 50% and 100% by controlling the working state of the double refrigeration cycles, and only the two refrigeration levels can cause that the temperature change of a carriage (in a to-be-refrigerated area) of the vehicle is not smooth and uniform enough and the riding comfort is not enough.
Disclosure of Invention
The embodiment of the invention aims to provide a refrigerating device, a control method and a system, which can provide multi-stage refrigeration grade adjustment, so that the temperature change of a railway vehicle is balanced, the control is more flexible, and the comfort of passengers is improved.
In order to achieve the above object, the present invention provides a refrigeration apparatus, comprising two sets of parallel refrigeration systems; the refrigerating system comprises a liquid path refrigerating structure and a bypass refrigerating pipeline communicated with the designated position of the liquid path refrigerating structure;
the bypass refrigeration pipeline is provided with a bypass valve and a throttling element;
the designated position is any one of the following communication modes:
the inlet of the bypass refrigeration pipeline is communicated with a pipeline at the inlet of a condenser in the liquid path refrigeration structure or a pipeline at the outlet of the condenser, and the outlet of the bypass refrigeration pipeline is communicated with a pipeline at the inlet of an evaporator in the liquid path refrigeration structure; or one end of the bypass refrigeration pipeline is communicated with a condenser inlet pipeline in the liquid path refrigeration structure, and the other end of the bypass refrigeration pipeline is communicated with a pipeline at the outlet of an evaporator in the liquid path refrigeration structure.
Preferably, the liquid path refrigerating structure comprises a compressor, a condenser, a liquid path valve and an evaporator which are sequentially communicated; wherein the liquid path valve is opened or closed simultaneously with the compressor.
In addition, the present invention provides a refrigeration control method using the refrigeration apparatus described above, the refrigeration control method including:
acquiring a temperature value and a preset temperature value in an area to be refrigerated;
determining a current target refrigeration grade corresponding to a current difference value between the temperature value in the area to be refrigerated and a preset temperature value according to a corresponding relation between the preset difference value and the refrigeration grade; and
and controlling the refrigerating device to perform refrigeration by adopting a control strategy corresponding to the current target refrigeration level.
Preferably, the method for obtaining the preset corresponding relationship between the difference value and the refrigeration level includes:
acquiring a current refrigeration state of the air conditioner, wherein the refrigeration state comprises a refrigeration entering process and a refrigeration exiting process; and
determining the corresponding relation between a preset difference value and a refrigeration grade according to the current refrigeration state; wherein, the refrigeration entering process and the refrigeration exiting process respectively correspond to a preset corresponding relation between the difference value and the refrigeration grade.
Preferably, the first and second electrodes are formed of a metal,
when the current refrigeration state is a refrigeration entering process, determining a current target refrigeration grade corresponding to a current difference value between the temperature value in the area to be refrigerated and a preset temperature value according to a corresponding relation between the preset difference value and the refrigeration grade comprises the following steps:
when T isin-Tic-0.5, the current target refrigeration level is configured to be the first level corresponding to no refrigeration enabled by either of the two groups of the refrigeration systems;
when-0.5 is less than or equal to Tin-TicIf the target refrigeration grade is less than 0, the current target refrigeration grade is a second grade corresponding to the starting of any group of refrigeration systems and the opening of bypass refrigeration pipelines of the refrigeration systems
When 0 is less than or equal to Tin-TicWhen the current target refrigeration grade is less than 0.5, the current target refrigeration grade is a third grade corresponding to the starting of any group of refrigeration systems and the closing of bypass refrigeration pipelines of the refrigeration systems;
when T is more than or equal to 0.5in-TicWhen the current target refrigeration grade is less than 1, the current target refrigeration grade is a fourth grade corresponding to the condition that the two groups of refrigeration systems are started and bypass refrigeration pipelines of the two groups of refrigeration systems are started;
when 1 is less than or equal to Tin-TicWhen the current target refrigeration grade is less than 1.5, the current target refrigeration grade is a fifth grade corresponding to the condition that the two groups of refrigeration systems are started and a bypass refrigeration pipeline of any one group of refrigeration systems is started;
when T isin-TicWhen the current target refrigeration grade is more than or equal to 1.5, the current target refrigeration grade is a sixth grade corresponding to that the two groups of refrigeration systems are started and bypass refrigeration pipelines of the two groups of refrigeration systems are closed;
wherein, TicFor a predetermined temperature value, TinIs the temperature value in the area to be refrigerated.
Preferably, the first and second electrodes are formed of a metal,
when the current refrigeration state is a refrigeration exit process, determining a current target refrigeration level corresponding to a current difference value between the temperature value in the area to be refrigerated and the preset temperature value according to a corresponding relationship between the preset difference value and the refrigeration level includes:
when T is more than or equal to 0.5in-TicWhen the current target refrigeration grade is less than 1, the current target refrigeration grade is a fifth grade corresponding to the starting of the two groups of refrigeration systems and the opening of the bypass refrigeration pipeline of any one group of refrigeration systems;
when 0 is less than or equal to Tin-TicWhen the current target refrigeration grade is less than 0.5, the current target refrigeration grade is a fourth grade corresponding to that the two groups of refrigeration systems are started and bypass refrigeration pipelines of the two groups of refrigeration systems are both opened;
when-0.5 is less than or equal to Tin-TicIf the current target refrigeration level is less than 0, starting any group of the refrigeration systems of the current target refrigeration level and closing a bypass refrigeration pipeline of the refrigeration systems to a corresponding third level;
when-1 is less than or equal to Tin-TicWhen the current target refrigeration grade is less than-0.5, the current target refrigeration grade is a second grade corresponding to the starting of any group of refrigeration systems and the opening of bypass refrigeration pipelines of the refrigeration systems;
when T isin-Tic-1, the current target refrigeration level is configured to be the first level for which neither of the two groups of the refrigeration systems is enabled for refrigeration.
Preferably, the controlling the refrigeration system to perform refrigeration by using a control strategy corresponding to the current target refrigeration level includes:
when the current target refrigeration level is a first level, controlling the air feeder to operate;
when the current target refrigeration level is a second level, controlling the operation of the air blower and the condensing fan and opening a bypass refrigeration pipeline of any one group of the refrigeration systems;
when the current target refrigeration level is a third level, controlling a blower and a condensing fan to operate, starting any one group of refrigeration system and closing a bypass refrigeration pipeline of the refrigeration system;
when the current target refrigeration level is a fourth level, controlling a blower and a condensing fan to operate, starting two groups of refrigeration systems and starting bypass refrigeration pipelines of the two groups of refrigeration systems;
when the current target refrigeration level is a fifth level, controlling a blower and a condensing fan to operate, starting two groups of refrigeration systems and starting a bypass refrigeration pipeline of any one group of refrigeration system;
when the current target refrigeration grade is a sixth grade, the blower and the condensing fan are controlled to operate, the two groups of refrigeration systems are all started, and bypass refrigeration pipelines of the two groups of refrigeration systems are all closed.
Preferably, the refrigeration control method further includes:
when the pressure of the refrigeration system is greater than a preset first pressure threshold value, controlling the refrigeration system to adopt a refrigeration level so as to reduce the pressure of the refrigeration system; or
When the pressure of the refrigeration system is smaller than a preset second pressure threshold value, controlling the refrigeration system to adopt a refrigeration grade to increase the pressure of the refrigeration system;
wherein the second pressure threshold is less than the first pressure threshold.
In addition, the present invention provides a refrigeration control system using the refrigeration apparatus described above, the refrigeration control system including:
the temperature acquisition unit is used for acquiring a temperature value and a preset temperature value in the area to be refrigerated;
the grade determining unit is used for determining a current target refrigeration grade corresponding to a current difference value between the temperature value in the area to be refrigerated and a preset temperature value according to a corresponding relation between the preset difference value and the refrigeration grade; and
and the system control unit is used for controlling the refrigerating device to execute refrigeration by adopting a control strategy corresponding to the current target refrigeration grade.
Preferably, the refrigeration control system further comprises:
the state obtaining unit is used for obtaining the current refrigeration state of the air conditioner, wherein the refrigeration state comprises a refrigeration entering process and a refrigeration exiting process; and
the corresponding relation determining unit is used for determining the corresponding relation between the preset difference value and the refrigeration grade according to the current refrigeration state; wherein, the refrigeration entering process and the refrigeration exiting process respectively correspond to a preset corresponding relation between the difference value and the refrigeration grade.
Preferably, the rank determination unit includes:
when the current cooling state is a cooling entry process,
a first grade determination module for determining when T isin-Tic-0.5, the current target refrigeration level is configured to be the first level corresponding to no refrigeration enabled by either of the two groups of the refrigeration systems;
a second level determination module, when-0.5 ≤ Tin-TicIf the current target refrigeration grade is less than 0, the current target refrigeration grade is a second grade corresponding to the starting of any group of refrigeration systems and the opening of bypass refrigeration pipelines of the refrigeration systems;
a third level determination module for determining if T is greater than or equal to 0in-TicWhen the current target refrigeration grade is less than 0.5, the current target refrigeration grade is a third grade corresponding to the starting of any group of refrigeration systems and the closing of bypass refrigeration pipelines of the refrigeration systems;
a fourth level determination module for determining if T is greater than or equal to 0.5in-TicWhen the current target refrigeration grade is less than 1, the two groups of refrigeration systems are all started, and bypass refrigeration pipelines of the two groups of refrigeration systems are all opened corresponding fourthGrade;
the fifth grade determining module is used for determining that the current target refrigeration grade is a fifth grade corresponding to the condition that the two groups of refrigeration systems are started and bypass refrigeration pipelines of any one group of refrigeration systems are started;
a sixth grade determining module for determining if T is higher than the first gradein-TicWhen the current target refrigeration grade is more than or equal to 1.5, the current target refrigeration grade is a sixth grade corresponding to that the two groups of refrigeration systems are started and bypass refrigeration pipelines of the two groups of refrigeration systems are closed;
wherein, TicFor a predetermined temperature value, TinIs the temperature value in the area to be refrigerated.
Preferably, the rank determination unit further includes:
when the current cooling state is a cooling exit process,
the fifth grade determining module is used for determining T when T is more than or equal to 0.5in-TicWhen the current target refrigeration grade is less than 1, the current target refrigeration grade is a fifth grade corresponding to the condition that the two groups of refrigeration systems are started and the bypass refrigeration pipeline of any one group of refrigeration systems is opened
The fourth grade determining module is used for determining T when T is more than or equal to 0in-TicWhen the current target refrigeration grade is less than 0.5, the current target refrigeration grade is a fourth grade corresponding to that the two groups of refrigeration systems are started and bypass refrigeration pipelines of the two groups of refrigeration systems are both opened;
the third grade determining module is used for determining the third grade when the T is more than or equal to-0.5in-TicIf the current target refrigeration level is less than 0, starting any group of the refrigeration systems of the current target refrigeration level and closing a bypass refrigeration pipeline of the refrigeration systems to a corresponding third level;
the second grade determining module is used for determining the grade of the product when the value is-1 ≦ Tin-TicWhen < -0.5%, the current target refrigeration grade is a second grade corresponding to the starting of any group of refrigeration systems and the opening of bypass refrigeration pipelines of the refrigeration systems;
the first grade determining module is used for determining the grade when T is reachedin-TicWhen < -1 >, the current target refrigeration level is configured as a first level corresponding to no refrigeration activation of either of the two groups of refrigeration systemsAnd (4) stage.
Preferably, the system control unit includes:
the first control module is used for controlling the air feeder to operate when the current target refrigeration level is a first level;
the second control module is used for controlling the operation of the air feeder and the condensing fan, starting any group of the refrigerating systems and starting a bypass refrigerating pipeline when the current target refrigerating grade is a second grade;
the third control module is used for controlling the operation of the blower and the condensing fan, starting any one group of the refrigerating systems and closing a bypass refrigerating pipeline when the current target refrigerating grade is a third grade;
the fourth control module is used for controlling the operation of the air blower and the condensing fan when the current target refrigeration level is a fourth level, wherein the two groups of refrigeration systems are started, and bypass refrigeration pipelines of the two groups of refrigeration systems are started;
the fifth control module is used for controlling the air blower and the condensing fan to operate two groups of refrigeration systems to be started and a bypass refrigeration pipeline of any one group of refrigeration system to be opened when the current target refrigeration level is a fifth level, so that the refrigeration system performs refrigeration by adopting the fifth level;
and the sixth control module is used for controlling the air feeder and the condensing fan to operate and two sets of the refrigerating systems to be started and two sets of bypass refrigerating pipelines of the refrigerating systems to be closed when the current target refrigerating grade is the sixth grade.
Preferably, the refrigeration control system may further include:
the pressure reducing unit is used for controlling the refrigeration system to adopt a refrigeration level to reduce the pressure of the refrigeration system when the pressure of the refrigeration system is greater than a preset first pressure threshold value; or
The pressure increasing unit is used for controlling the refrigeration system to adopt a refrigeration grade to increase the pressure of the refrigeration system when the pressure of the refrigeration system is smaller than a preset second pressure threshold value;
wherein the second pressure threshold is less than the first pressure threshold.
In addition, the invention also provides computer equipment which comprises a processor, a memory and a program which is stored on the memory and can run on the processor, wherein the refrigeration control method is realized when the processor executes the program.
In addition, the present invention also provides a computer-readable storage medium having a program stored thereon, the program implementing the above-described refrigeration control method when executed by a processor.
The embodiment of the invention has the following beneficial effects:
after having adopted above-mentioned refrigerating plant, on original refrigerating system's basis, can increase refrigerating system's refrigeration grade's selectivity through bypass refrigeration pipeline, utilize multiple refrigeration grade for treat that the temperature variation in the refrigeration area is more even, control more nimble, the reliability is higher, and it can guarantee air conditioning system continuous stable operation, promotes and treats refrigeration area in passenger's the travelling comfort.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Wherein:
FIG. 1a is a schematic diagram of a refrigeration unit according to an embodiment;
FIG. 1b is a schematic diagram of another embodiment of a refrigeration unit;
FIG. 1c is a schematic diagram of another embodiment of a refrigeration unit;
FIG. 2 is a schematic diagram of a refrigeration unit in one embodiment;
FIG. 3 is a flow chart of a refrigeration control method according to an embodiment;
FIG. 4 is a flowchart illustrating a method for obtaining the corresponding relationship between the preset difference and the refrigeration level according to an embodiment; and
FIG. 5 is a block diagram of a refrigeration control system in accordance with one embodiment.
Description of the reference numerals
1. A condenser; 2. a first compressor; 3. a first liquid path valve; 4. a first bypass valve; 5. a condensing fan; 6. a blower; 7. an evaporator; 8. a second compressor; 9. a second liquid path valve; 10. a second bypass valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The present invention will be described by taking an air-conditioning and cooling system for a rail vehicle as an example, and before describing the present invention in detail, an air-conditioning and cooling system for a conventional rail vehicle will be described briefly. First, the existing air-conditioning and refrigerating system for railway vehicles may also have 2 sets of refrigerating cycles, which are generally realized by a constant-frequency air-conditioning unit. And the air-conditioning refrigeration systems of the two groups only realize the adjustment of the refrigeration levels of 50 percent and 100 percent through the change of the starting mode. Significant costs are incurred if new types of domestic or commercial air conditioning refrigeration systems are reassembled. In order to reduce the cost of rectification, the refrigeration system of the invention is designed, which is obtained after certain modifications are carried out on the existing refrigeration system of the railway vehicle.
Fig. 1 a-1 c are schematic structural views of a refrigeration apparatus of the present invention, as shown in fig. 1a, 1b and 1c, comprising two parallel sets of refrigeration systems for refrigerating a passenger compartment of a railway vehicle; when the liquid path refrigerating structure is started and the bypass refrigerating pipeline is opened, the refrigerating system can provide refrigeration with a preset level; for example, the refrigeration level is 50% refrigeration when one of the refrigeration systems is on and the bypass refrigeration line is off, which becomes 35% when the bypass refrigeration line is on; the designated position is any one of the following communication modes:
as shown in fig. 1a and 1b, the inlet of the bypass refrigeration pipeline is communicated with the pipeline at the inlet of the condenser 1 in the liquid path refrigeration structure or the pipeline at the outlet of the condenser 1, and the outlet of the bypass refrigeration pipeline is communicated with the pipeline at the inlet of the evaporator 7 in the liquid path refrigeration structure; in the bypass valve of the two refrigeration systems in fig. 1a, the inlet of the bypass pipeline is between the compressor 2 and the condenser 1, and the outlet of the bypass pipeline is between the throttling element and the evaporator 7, wherein the throttling element may be a capillary tube 11. The bypass valve of both systems of fig. 1b has a bypass line inlet between the condenser 1 and the capillary tube 11 (the schematic drawing is only shown at the outlet of the condenser 1) and an outlet between the capillary tube 11 and the evaporator 7.
As shown in fig. 1c, one end of the bypass refrigeration pipeline is communicated with an inlet pipeline of the condenser 1 in the liquid path refrigeration structure, and the other end is communicated with a pipeline at an outlet of the evaporator 7 in the liquid path refrigeration structure. Where the bypass valves 4 and 10 of the two systems of figure 1c are located with the bypass line inlet between the compressor 2 and the condenser 1 and the outlet between the evaporator 7 and the compressor 2.
The refrigerating apparatus of the present invention may further include a condensing fan 5 and a blower 6, which are structures existing in the existing railway, and are not described in detail in the present invention, but it is to be noted that although the condensing fan 5 and the blower 6 are structures existing in the existing railway vehicle, a control logic method thereof is not disclosed. The liquid path refrigerating structure can realize refrigeration control. The main improvement of the invention is that the bypass refrigeration pipeline communicated with the liquid path refrigeration structure can provide refrigeration of a preset grade for the carriage of the railway vehicle, so that a user can automatically select more refrigeration grades to finish the refrigeration by increasing the selectivity of the refrigeration grade or the whole system can automatically select more refrigeration grades. The invention increases a plurality of adjustable levels (two groups of refrigeration systems are adopted) for the temperature adjustment of the carriage of the whole railway vehicle through the improvement of the bypass refrigeration pipeline. For example, two refrigeration systems can correspond to 6 different refrigeration levels, shown in fig. 2, of no refrigeration (ventilation), 35% refrigeration, 50% refrigeration, 70% refrigeration, 85% refrigeration, and 100% refrigeration, respectively. Although each group of refrigerating systems is only provided with a bypass refrigerating pipeline, the whole device has great control selectivity, and can achieve smoother and more comfortable passengers when adjusting the temperature.
In an embodiment of the present invention, the bypass refrigeration circuit may include: a bypass pipeline body communicated with the specified position in the liquid path refrigerating structure, and a bypass valve and a capillary tube which are arranged on the bypass pipeline body; wherein when the liquid path refrigeration structure is activated and the bypass valve is closed, the refrigeration system is configured for full capacity operation refrigeration, i.e., full capacity refrigeration of a single refrigeration system; when the liquid path refrigeration structure is started and the bypass valve is opened, the refrigeration system can provide refrigeration with a preset level, namely, 35% refrigeration of a single refrigeration system. As shown in fig. 1, the bypass valve in the bypass refrigeration pipeline may receive a control signal to complete opening or closing, so as to implement the implementation of the refrigeration level. The bypass refrigeration pipeline is connected with the pipeline where the liquid path valve is located in parallel, the liquid path valve is opened when the refrigeration system starts, whether the bypass valve is opened or not is determined according to the required refrigeration grade, the refrigeration system operates in full load when the liquid path valve is opened and the bypass valve is not opened, and under the condition that the refrigeration systems are provided with two groups, the refrigeration system can provide 50% refrigeration in full load operation.
In an embodiment of the present invention, taking fig. 1a as an example, the liquid path refrigeration structure may include: the compressor, the condenser, the liquid path valve and the evaporator are sequentially communicated; wherein the liquid path valve is opened or closed simultaneously with the compressor. As shown in fig. 1, the first group of liquid path refrigeration structures includes a first compressor 2, a condenser 1, an evaporator 7, a capillary tube 11, and the like, and the communication manner is as shown in fig. 1 a. The second set of liquid path refrigeration components includes: the second compressor 8, the condenser and the evaporator, as shown in fig. 1a, are indicated in fig. 1a in the same position for the sake of convenience of reference, which does not affect understanding. The line in which the second circuit valve 9 is located may be in parallel with the bypass line body of the second bypass valve 10.
Fig. 3 is a flowchart of a refrigeration control method according to the present invention, taking an area to be refrigerated as a carriage of a rail vehicle as an example, as shown in fig. 3, and using the refrigeration apparatus described above, the refrigeration control method includes:
s301, acquiring a temperature value and a preset temperature value in a carriage of the railway vehicle; the temperature value in the vehicle compartment is obtained by a temperature sensor in the vehicle compartment, and the preset temperature value may be set in real time or preset in the control system.
S302, determining a current target refrigeration grade corresponding to the current difference value between the temperature value in the compartment and the preset temperature value according to the corresponding relation between the preset difference value and the refrigeration grade. As shown in fig. 2, the operating logic of the air conditioning unit is determined by the difference between the cabin temperature and the cabin set temperature. For example, taking the cooling entry process as an example, the difference is-0.5, then the current target cooling level may be the first level, i.e., ventilation mode, with only blower 6 operating.
And S303, controlling the refrigerating device to perform refrigeration by adopting a control strategy corresponding to the current target refrigeration level. The control strategy and the control logic of the component for controlling the refrigeration device are, for example, when the current target refrigeration level is a first level, the control strategy is to control only the blower 6 of the device to operate.
In an embodiment of the present invention, as shown in fig. 4, the method for obtaining the preset correspondence between the difference and the refrigeration level may include:
s401, obtaining the current refrigeration state of the air conditioner, wherein the refrigeration state comprises a refrigeration entering process and a refrigeration exiting process. As shown in fig. 2, the difference is set in the refrigeration exit process, and the refrigeration entry process and the refrigeration exit process use different corresponding relationships between the difference and the refrigeration level.
S402, determining the corresponding relation between the preset difference value and the refrigeration grade according to the current refrigeration state; wherein, the refrigeration entering process and the refrigeration exiting process respectively correspond to a preset corresponding relation between the difference value and the refrigeration grade.
In the embodiment of the present invention, as shown in fig. 2, Tic denotes the difference in the left part of the "eight" word. When the current refrigeration state is a refrigeration entering process, in step S302, determining a current target refrigeration level corresponding to the current difference between the temperature value in the vehicle compartment and the preset temperature value according to the preset correspondence between the difference and the refrigeration level includes:
when T isin-Tic-0.5, said current target refrigeration level is configured as a first level corresponding to neither of said two sets of refrigeration systems initiating refrigeration, no refrigeration being deemed to be blower 6 operation, wherein the first level is 0 refrigeration, i.e. no refrigeration;
when-0.5 is less than or equal to Tin-TicIf the target refrigeration level is less than 0, the current target refrigeration level is a second level corresponding to the starting of any group of refrigeration systems and the opening of bypass refrigeration pipelines of the refrigeration systems, and the second level is 35% refrigeration;
when 0 is less than or equal to Tin-TicWhen the current target refrigeration grade is less than 0.5, the current target refrigeration grade is a third grade corresponding to the starting of any group of refrigeration systems and the closing of bypass refrigeration pipelines of the refrigeration systems, and the third grade is 50% refrigeration;
when T is more than or equal to 0.5in-TicWhen the current target refrigeration grade is less than 1, the two groups of refrigeration systems are started, bypass refrigeration pipelines of the two groups of refrigeration systems are started to correspond to a fourth grade, and the fourth grade is 70% refrigeration;
when 1 is less than or equal to Tin-TicWhen the current target refrigeration grade is less than 1.5, the current target refrigeration grade is a fifth grade corresponding to the starting of the two groups of refrigeration systems and the opening of the bypass refrigeration pipeline of any group of refrigeration systems, and the fifth grade is 85% refrigeration;
when T isin-TicWhen the current target refrigeration grade is more than or equal to 1.5, the current target refrigeration grade is that the two groups of refrigeration systems are started and bypass refrigeration pipelines of the two groups of refrigeration systems are closed correspondinglyGrade, the sixth grade is 100% refrigeration;
wherein, TicFor a predetermined temperature value, TinIs the temperature value in the compartment which is the area to be refrigerated.
By the mode, multi-level hierarchical control can be realized by utilizing various refrigeration judging and adjusting modes and various refrigeration modes, so that the change of the carriage is more balanced. In the refrigerating process, the comfort of the carriage is improved, and 5 grades of refrigerating hierarchical control modes are adopted except for the first grade (no refrigeration), so that one air conditioning unit (two groups of refrigerating systems) can uniformly control the temperature in the carriage.
In an embodiment of the present invention, as shown in fig. 2, the determining, at the right part of the "eight" shape, the current target refrigeration level corresponding to the current difference between the interior temperature value and the preset temperature value according to the preset correspondence between the difference and the refrigeration level when the current refrigeration state is the refrigeration exiting process may include:
when T is more than or equal to 0.5in-TicWhen the current target refrigeration grade is less than 1, the current target refrigeration grade is a fifth grade corresponding to the starting of the two groups of refrigeration systems and the opening of the bypass refrigeration pipeline of any one group of refrigeration systems;
when 0 is less than or equal to Tin-TicWhen the current target refrigeration grade is less than 0.5, the bypass refrigeration pipelines of the two groups of refrigeration systems are all opened to corresponding fourth grades;
when-0.5 is less than or equal to Tin-TicIf the current target refrigeration grade is less than 0, the current target refrigeration grade is a third grade corresponding to the starting of any group of refrigeration systems and the closing of bypass refrigeration pipelines of the refrigeration systems;
when-1 is less than or equal to Tin-TicWhen the current target refrigeration grade is less than-0.5, the current target refrigeration grade is a second grade corresponding to the starting of any group of refrigeration systems and the opening of bypass refrigeration pipelines of the refrigeration systems;
when T isin-Tic< -1, the current target refrigeration level is configured to not refrigerate the corresponding first level.
Preferably, in order to implement multi-level control, in S303 of the present invention, the controlling the refrigeration system to perform refrigeration by using the control strategy corresponding to the current target refrigeration level may include:
when the current target refrigeration level is a first level, controlling the blower 6 to operate, and refrigerating 0, namely not refrigerating; wherein, the blower 6 can realize air supply without refrigeration.
When the current target refrigeration level is 35% of the second level, controlling the blower 6 and the condensing fan 5 to operate, and independently starting a bypass refrigeration pipeline of any group of refrigeration systems;
when the current target refrigeration grade is the third grade 50% refrigeration, controlling the blower 6 and the condensing fan 5 to operate, starting any one group of refrigeration system and closing a bypass refrigeration pipeline;
when the current target refrigeration level is 70% of the fourth level, controlling the blower 6 and the condensing fan 5 to operate, starting the two groups of refrigeration systems and starting bypass refrigeration pipelines of the two groups of refrigeration systems;
when the current target refrigeration grade is 85% of the fifth grade, controlling the blower 6 and the condensing fan 5 to operate, starting two groups of refrigeration systems and starting a bypass refrigeration pipeline of any one group of refrigeration systems;
when the current target refrigeration grade is the sixth grade 100% refrigeration, the blower 6 and the condensing fan 5 are controlled to operate, the two groups of refrigeration systems are all started, and bypass refrigeration pipelines of the two groups of refrigeration systems are all closed.
Preferably, when the air conditioning unit of the railway vehicle operates in an extreme environment, the problems of high-pressure protection (high-temperature environment) and frosting of the indoor heat exchanger, which leads to water spraying or low-pressure protection (low-temperature environment) also easily occur, and the problems are solved. The refrigeration control method further includes:
when the pressure of the refrigeration system is greater than a preset first pressure threshold value, controlling the refrigeration system to adopt a refrigeration level so as to reduce the pressure of the refrigeration system; or
And when the pressure of the refrigeration system is smaller than a preset second pressure threshold value, controlling the refrigeration system to adopt a refrigeration grade to increase the pressure of the refrigeration system.
Wherein the first pressure threshold may be 20MPa and the second pressure threshold may be 5 MPa. Controlling the refrigeration system to employ a level of refrigeration to reduce the pressure of the refrigeration system may be to below a first pressure threshold, and the level of refrigeration controlled may be one of a 70% refrigeration stage, a 50% refrigeration stage, or a 35% refrigeration stage; controlling the refrigeration system to employ a level of refrigeration to increase the pressure of the refrigeration system may be to above a second pressure threshold, and the level of refrigeration controlled may be one of a 70% refrigeration stage, a 50% refrigeration stage, or a 35% refrigeration stage.
In addition, fig. 5 is a refrigeration control system of the present invention, as shown in fig. 5, the refrigeration control system includes:
the temperature acquisition unit is used for acquiring a temperature value and a preset temperature value in the area to be refrigerated;
the grade determining unit is used for determining a current target refrigeration grade corresponding to a current difference value between the temperature value in the area to be refrigerated and a preset temperature value according to a corresponding relation between the preset difference value and the refrigeration grade; and
and the system control unit is used for controlling the refrigerating device to execute refrigeration by adopting a control strategy corresponding to the current target refrigeration grade.
Preferably, the refrigeration control system further includes:
the state obtaining unit is used for obtaining the current refrigeration state of the air conditioner, wherein the refrigeration state comprises a refrigeration entering process and a refrigeration exiting process; and
the corresponding relation determining unit is used for determining the corresponding relation between the preset difference value and the refrigeration grade according to the current refrigeration state; wherein, the refrigeration entering process and the refrigeration exiting process respectively correspond to a preset corresponding relation between the difference value and the refrigeration grade.
Preferably, the rank determination unit includes:
when the current cooling state is a cooling entry process,
a first rank determination module that determines a rank of the image,for when Tin-Tic-0.5, the current target refrigeration level is configured to be the first level corresponding to no refrigeration enabled by either of the two groups of the refrigeration systems;
a second level determination module, when-0.5 ≤ Tin-TicIf the current target refrigeration grade is less than 0, the current target refrigeration grade is a second grade corresponding to the starting of any group of refrigeration systems and the opening of bypass refrigeration pipelines of the refrigeration systems;
a third level determination module for determining if 0 ≦ Tin-TicWhen the current target refrigeration grade is less than 0.5, the current target refrigeration grade is a third grade corresponding to the starting of any group of refrigeration systems and the closing of bypass refrigeration pipelines of the refrigeration systems;
a fourth level determination module for determining if T is greater than or equal to 0.5in-TicWhen the current target refrigeration grade is less than 1, the current target refrigeration grade is a fourth grade corresponding to the condition that the two groups of refrigeration systems are started and bypass refrigeration pipelines of the two groups of refrigeration systems are started;
the fifth grade determining module is used for determining that the current target refrigeration grade is a fifth grade corresponding to the condition that the two groups of refrigeration systems are started and bypass refrigeration pipelines of any one group of refrigeration systems are started;
a sixth grade determining module for determining if T is higher than the first gradein-TicWhen the current target refrigeration grade is more than or equal to 1.5, the current target refrigeration grade is a sixth grade corresponding to that the two groups of refrigeration systems are started and bypass refrigeration pipelines of the two groups of refrigeration systems are closed;
wherein, TicFor a predetermined temperature value, TinIs the temperature value in the area to be refrigerated.
Preferably, the rank determination unit further includes:
when the current cooling state is a cooling exit process,
the fifth grade determining module is used for determining T when T is more than or equal to 0.5in-TicWhen the current target refrigeration grade is less than 1, the current target refrigeration grade is a fifth grade corresponding to the starting of the two groups of refrigeration systems and the opening of the bypass refrigeration pipeline of any one group of refrigeration systems;
the fourth grade determining module is used for determining T when T is more than or equal to 0in-TicWhen the current target refrigeration grade is less than 0.5, the current target refrigeration grade is a fourth grade corresponding to the condition that the two groups of refrigeration systems are started and bypass refrigeration pipelines of the two groups of refrigeration systems are both opened;
the third grade determining module is used for determining the third grade when the T is more than or equal to-0.5in-TicIf the current target refrigeration level is less than 0, starting any group of the refrigeration systems of the current target refrigeration level and closing a bypass refrigeration pipeline of the refrigeration systems to a corresponding third level;
the second grade determining module is used for determining the grade of the product when the value is-1 ≦ Tin-TicWhen < -0.5%, the current target refrigeration grade is a second grade corresponding to the starting of any group of refrigeration systems and the opening of bypass refrigeration pipelines of the refrigeration systems;
the first grade determining module is used for determining the grade when T is reachedin-Tic-1, the current target refrigeration level is configured to be the first level for which neither of the two groups of the refrigeration systems is enabled for refrigeration.
Preferably, the system control unit includes:
the first control module is used for controlling the blower 6 to operate when the current target refrigeration level is a first level;
the second control module is used for controlling the operation of the blower 6 and the condensing fan 5, starting any group of the refrigeration systems and starting a bypass refrigeration pipeline when the current target refrigeration level is a second level;
the third control module is used for controlling the operation of the blower 6 and the condensing fan 5, starting any one group of the refrigerating systems and closing a bypass refrigerating pipeline when the current target refrigerating grade is a third grade;
the fourth control module is used for controlling the operation of the blower 6 and the condensing fan 5 when the current target refrigeration level is a fourth level, starting the two groups of refrigeration systems and starting bypass refrigeration pipelines of the two groups of refrigeration systems;
the fifth control module is used for controlling the blower 6 and the condensing fan 5 to operate two groups of refrigeration systems to be started and a bypass refrigeration pipeline of any one group of refrigeration systems to be opened when the current target refrigeration level is a fifth level, so that the refrigeration systems perform refrigeration by adopting the fifth level;
and the sixth control module is used for controlling the air blower 6 and the condensing fan 5 to operate and two sets of the refrigerating systems to be started and two sets of bypass refrigerating pipelines of the refrigerating systems to be closed when the current target refrigerating grade is the sixth grade.
Preferably, the refrigeration control system may further include:
the pressure reducing unit is used for controlling the refrigeration system to adopt a refrigeration level to reduce the pressure of the refrigeration system when the pressure of the refrigeration system is greater than a preset first pressure threshold value; or
The pressure increasing unit is used for controlling the refrigeration system to adopt a refrigeration grade to increase the pressure of the refrigeration system when the pressure of the refrigeration system is smaller than a preset second pressure threshold value;
wherein the second pressure threshold is less than the first pressure threshold.
Compared with the prior art, the refrigeration control system of the invention has the same distinguishing technical characteristics and technical effects as the refrigeration control method, and is not repeated herein.
In addition, the invention also provides computer equipment which comprises a processor, a memory and a program which is stored on the memory and can run on the processor, wherein the refrigeration control method is realized when the processor executes the program.
In addition, the present invention also provides a computer-readable storage medium having a program stored thereon, the program implementing the above-described refrigeration control method when executed by a processor.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include forms of volatile memory in a computer readable medium, Random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). The memory is an example of a computer-readable medium.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the invention is not limited by the scope of the appended claims.
Claims (11)
1. The refrigerating device is characterized by comprising two groups of parallel refrigerating systems; wherein the content of the first and second substances,
the refrigerating system comprises a liquid path refrigerating structure and a bypass refrigerating pipeline communicated with the designated position of the liquid path refrigerating structure;
the bypass refrigeration pipeline is provided with a bypass valve and a throttling element;
the designated position is any one of the following communication modes:
the inlet of the bypass refrigeration pipeline is communicated with a pipeline at the inlet of a condenser in the liquid path refrigeration structure or a pipeline at the outlet of the condenser, and the outlet of the bypass refrigeration pipeline is communicated with a pipeline at the inlet of an evaporator in the liquid path refrigeration structure; or
One end of the bypass refrigeration pipeline is communicated with a condenser inlet pipeline in the liquid path refrigeration structure, and the other end of the bypass refrigeration pipeline is communicated with a pipeline at an evaporator outlet in the liquid path refrigeration structure.
2. The refrigeration device as recited in claim 1 wherein said liquid path refrigeration structure comprises a compressor, a condenser, a liquid path valve and an evaporator in sequential communication; wherein the liquid path valve is opened or closed simultaneously with the compressor.
3. A refrigeration control method using the refrigeration apparatus according to any one of claims 1 to 2, the refrigeration control method comprising:
acquiring a temperature value and a preset temperature value in an area to be refrigerated;
determining a current target refrigeration grade corresponding to a current difference value between the temperature value in the area to be refrigerated and a preset temperature value according to a corresponding relation between the preset difference value and the refrigeration grade; and
and controlling the refrigerating device to perform refrigeration by adopting a control strategy corresponding to the current target refrigeration level.
4. The refrigeration control method according to claim 3, wherein the method of obtaining the correspondence relationship between the preset difference value and the refrigeration level includes:
acquiring a current refrigeration state of the air conditioner, wherein the refrigeration state comprises a refrigeration entering process and a refrigeration exiting process;
determining the corresponding relation between the preset difference value and the refrigeration grade according to the current refrigeration state;
wherein, the refrigeration entering process and the refrigeration exiting process respectively correspond to a preset corresponding relation between the difference value and the refrigeration grade.
5. The refrigeration control method according to claim 4,
when the current refrigeration state is a refrigeration entering process, determining a current target refrigeration grade corresponding to a current difference value between the temperature value in the area to be refrigerated and a preset temperature value according to a corresponding relation between the preset difference value and the refrigeration grade comprises the following steps:
when T isin-Tic-0.5, the current target refrigeration level is configured to be the first level corresponding to no refrigeration enabled by either of the two groups of the refrigeration systems;
when-0.5 is less than or equal to Tin-TicIf the current target refrigeration grade is less than 0, the current target refrigeration grade is a second grade corresponding to the starting of any group of refrigeration systems and the opening of bypass refrigeration pipelines of the refrigeration systems;
when 0 is less than or equal to Tin-TicWhen the current target refrigeration grade is less than 0.5, the current target refrigeration grade is a third grade corresponding to the starting of any group of refrigeration systems and the closing of bypass refrigeration pipelines of the refrigeration systems;
when T is more than or equal to 0.5in-TicWhen the current target refrigeration grade is less than 1, the two groups of refrigeration systems are all started, and bypass refrigeration pipelines of the two groups of refrigeration systems are all opened corresponding fourth and the likeA stage;
when 1 is less than or equal to Tin-TicWhen the current target refrigeration grade is less than 1.5, the current target refrigeration grade is a fifth grade corresponding to the condition that the two groups of refrigeration systems are started and a bypass refrigeration pipeline of any one group of refrigeration systems is started;
when T isin-TicWhen the current target refrigeration grade is more than or equal to 1.5, the current target refrigeration grade is a sixth grade corresponding to that the two groups of refrigeration systems are started and bypass refrigeration pipelines of the two groups of refrigeration systems are closed;
wherein, TicFor a predetermined temperature value, TinIs the temperature value in the area to be refrigerated.
6. The refrigeration control method according to claim 5,
when the current refrigeration state is a refrigeration exit process, determining a current target refrigeration level corresponding to a current difference value between the temperature value in the area to be refrigerated and the preset temperature value according to a corresponding relationship between the preset difference value and the refrigeration level includes:
when T is more than or equal to 0.5in-TicWhen the current target refrigeration grade is less than 1, the current target refrigeration grade is a fifth grade corresponding to the starting of the two groups of refrigeration systems and the opening of the bypass refrigeration pipeline of any one group of refrigeration systems;
when 0 is less than or equal to Tin-TicWhen the current target refrigeration grade is less than 0.5, the current target refrigeration grade is a fourth grade corresponding to that the two groups of refrigeration systems are started and bypass refrigeration pipelines of the two groups of refrigeration systems are both opened;
when-0.5 is less than or equal to Tin-TicIf the current target refrigeration grade is less than 0, the current target refrigeration grade is a third grade corresponding to the starting of any group of refrigeration systems and the closing of bypass refrigeration pipelines of the refrigeration systems;
when-1 is less than or equal to Tin-TicWhen the current target refrigeration grade is less than-0.5, the current target refrigeration grade is a second grade corresponding to the starting of any group of refrigeration systems and the opening of bypass refrigeration pipelines of the refrigeration systems;
when T isin-Tic< -1 >, the current target refrigeration level is configured such that neither of the two groups of refrigeration systems is activatedCooling the corresponding first level.
7. The refrigeration control method as recited in claim 5 or 6, wherein the controlling the refrigeration system to perform refrigeration using the control strategy corresponding to the current target refrigeration level comprises:
when the current target refrigeration level is a first level, controlling the blower (6) to operate;
when the current target refrigeration grade is a second grade, controlling a blower (6) and a condensing fan (5) to operate, starting any one group of refrigeration systems and starting a bypass refrigeration pipeline of the refrigeration systems;
when the current target refrigeration grade is a third grade, controlling a blower (6) and a condensing fan (5) to operate, starting any one group of refrigeration systems, and closing a bypass refrigeration pipeline of the refrigeration systems;
when the current target refrigeration grade is a fourth grade, controlling a blower (6) and a condensing fan (5) to operate, starting two groups of refrigeration systems and starting bypass refrigeration pipelines of the two groups of refrigeration systems;
when the current target refrigeration grade is a fifth grade, controlling a blower (6) and a condensing fan (5) to operate, starting two groups of refrigeration systems and starting a bypass refrigeration pipeline of any one group of refrigeration systems;
when the current target refrigeration grade is a sixth grade, the blower (6) and the condensing fan (5) are controlled to operate, the refrigeration systems are all started, and bypass refrigeration pipelines of the refrigeration systems are all closed.
8. The refrigeration control method as recited in claim 3, further comprising:
when the pressure of the refrigeration system is greater than a preset first pressure threshold value, controlling the refrigeration system to adopt a refrigeration level so as to reduce the pressure of the refrigeration system; or
When the pressure of the refrigeration system is smaller than a preset second pressure threshold value, controlling the refrigeration system to adopt a refrigeration grade to increase the pressure of the refrigeration system;
wherein the second pressure threshold is less than the first pressure threshold.
9. A refrigeration control system using the refrigeration apparatus of any one of claims 1 to 2, the refrigeration control system comprising:
the temperature acquisition unit is used for acquiring a temperature value and a preset temperature value in the area to be refrigerated;
the grade determining unit is used for determining a current target refrigeration grade corresponding to a current difference value between the temperature value in the area to be refrigerated and a preset temperature value according to a corresponding relation between the preset difference value and the refrigeration grade; and
and the system control unit is used for controlling the refrigerating device to execute refrigeration by adopting a control strategy corresponding to the current target refrigeration grade.
10. A computer device, characterized in that the computer device comprises a processor, a memory and a program stored on the memory and executable on the processor, and the processor executes the program to realize the refrigeration control method according to any one of claims 3 to 8.
11. A computer-readable storage medium on which a program is stored, characterized in that the program, when executed by a processor, implements the refrigeration control method according to any one of claims 3 to 8.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002087053A (en) * | 2000-09-11 | 2002-03-26 | Hitachi Ltd | Air conditioner for rolling-stock and its control method |
| KR20040094101A (en) * | 2003-05-01 | 2004-11-09 | 엘지전자 주식회사 | By-pass device with variable flow rate of multi air-conditioner system |
| JP2007155230A (en) * | 2005-12-06 | 2007-06-21 | Hitachi Appliances Inc | Air conditioner |
| CN101158495A (en) * | 2007-08-15 | 2008-04-09 | 阿尔西制冷工程技术（北京）有限公司 | Refrigeration system capable of controlling refrigerating capacity |
| CN202071840U (en) * | 2011-03-14 | 2011-12-14 | 上海科泰运输制冷设备有限公司 | Four-stage energy adjustable heat pump type rail transmit train air conditioning unit |
| CN106766423A (en) * | 2016-12-30 | 2017-05-31 | 石家庄国祥运输设备有限公司 | The method of the high pressure accumulating mechanism security monitoring of track traffic air-conditioning system |
| CN108731224A (en) * | 2018-08-31 | 2018-11-02 | 广东美的制冷设备有限公司 | Control method, device, equipment and the fixed frequency air conditioner system of fixed frequency air conditioner system |
-
2021
- 2021-12-31 CN CN202111678122.2A patent/CN114508868A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002087053A (en) * | 2000-09-11 | 2002-03-26 | Hitachi Ltd | Air conditioner for rolling-stock and its control method |
| KR20040094101A (en) * | 2003-05-01 | 2004-11-09 | 엘지전자 주식회사 | By-pass device with variable flow rate of multi air-conditioner system |
| JP2007155230A (en) * | 2005-12-06 | 2007-06-21 | Hitachi Appliances Inc | Air conditioner |
| CN101158495A (en) * | 2007-08-15 | 2008-04-09 | 阿尔西制冷工程技术（北京）有限公司 | Refrigeration system capable of controlling refrigerating capacity |
| CN202071840U (en) * | 2011-03-14 | 2011-12-14 | 上海科泰运输制冷设备有限公司 | Four-stage energy adjustable heat pump type rail transmit train air conditioning unit |
| CN106766423A (en) * | 2016-12-30 | 2017-05-31 | 石家庄国祥运输设备有限公司 | The method of the high pressure accumulating mechanism security monitoring of track traffic air-conditioning system |
| CN108731224A (en) * | 2018-08-31 | 2018-11-02 | 广东美的制冷设备有限公司 | Control method, device, equipment and the fixed frequency air conditioner system of fixed frequency air conditioner system |
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