CN114194237A - Temperature control method and device for subway air conditioning unit and readable storage medium - Google Patents
Temperature control method and device for subway air conditioning unit and readable storage medium Download PDFInfo
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- CN114194237A CN114194237A CN202010987397.3A CN202010987397A CN114194237A CN 114194237 A CN114194237 A CN 114194237A CN 202010987397 A CN202010987397 A CN 202010987397A CN 114194237 A CN114194237 A CN 114194237A
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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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Abstract
The application relates to a temperature control method and device for a subway air conditioning unit and a readable storage medium, wherein the temperature control method for the subway air conditioning unit comprises the following steps: acquiring the ambient temperature outside the subway; acquiring first running time of the air conditioning unit in a refrigeration mode according to the ambient temperature; if the first running time is less than a first time threshold value, the running mode of the air conditioning unit is adjusted to a cold quantity balance mode; detecting a second running time of the air conditioning unit in a cold quantity balance mode; and if the second running time is greater than or equal to a second time threshold value, adjusting the running mode of the air conditioning unit to a refrigeration mode. Through the method and the device, the second running time of the air conditioning unit in the cold quantity balance mode is controlled, the problem that how to keep the temperature in the vehicle stable because the cold quantity output is not carried out or the cold quantity output is reduced when the compressor needs to run continuously due to the shortest running time is solved, and the temperature in the vehicle is stable.
Description
Technical Field
The application relates to the technical field of variable frequency air conditioners for trains, in particular to a method, a device and a system for controlling the temperature of a subway air conditioning unit, computer equipment and a computer readable storage medium.
Background
In the transition season, the actual cold load in the vehicle is smaller, the requirement on cold quantity is small, the outdoor temperature is not high, the condensation temperature is lower, the energy efficiency ratio of the air conditioning unit is high, and the refrigerating capacity is large. Wherein, the frequency conversion of air conditioning unit does: limited by the lowest operating frequency of the compressor; the fixed frequency of the air conditioning unit is as follows: the hot gas bypass control is adopted, the unit has the minimum refrigerating capacity limitation, and the temperature in the vehicle is rapidly reduced due to the fact that the refrigerating capacity is far greater than the actual required refrigerating capacity in a transition season. In order to ensure oil return and safe operation of the compressor, the shortest operation time of the compressor is limited, so that the temperature in the vehicle is reduced to exceed a target temperature range, and the temperature in the vehicle is too low.
The roof structure is compact due to the limitation of the installation space of the subway vehicle, and the redundant refrigerating output cannot be output out of the train in an air duct bypass mode; the air conditioning unit is designed to be light and thin, the minimum height of the existing air conditioning unit reaches 300mm, the structure is compact, and the design of a bypass air channel cannot be realized. Heat recovery units, due to space limitations, are also temporarily not applicable.
In order to ensure comfort of the environment inside the vehicle, the temperature must not deviate too much from the target temperature, which might otherwise cause discomfort to the passengers.
At present, no effective solution is provided for how to keep the temperature in the vehicle stable without carrying out cold output or reducing the cold output when the compressor needs to continuously run due to the shortest running time in the related technology.
Disclosure of Invention
The embodiment of the application provides a temperature control method and device for a subway air conditioning unit and a readable storage medium, and aims to at least solve the problem that how to keep the temperature in a vehicle stable without cold output or reducing the cold output when a compressor needs to continuously run due to the shortest running time in the related art.
In a first aspect, an embodiment of the present application provides a temperature control method for a subway air conditioning unit, including: acquiring the ambient temperature outside the subway;
acquiring first running time of the air conditioning unit in a refrigeration mode according to the ambient temperature;
if the first running time is less than a first time threshold value, the running mode of the air conditioning unit is adjusted to a cold quantity balance mode;
detecting a second running time of the air conditioning unit in a cold quantity balance mode;
and if the second running time is greater than or equal to a second time threshold value, adjusting the running mode of the air conditioning unit to a refrigeration mode.
In some embodiments, determining whether the ambient temperature is within a preset ambient temperature range;
and if the ambient temperature is within the preset ambient temperature range, acquiring the first running time of the air conditioning unit in the refrigeration mode.
In some embodiments, the indoor temperature and the target temperature inside the subway are obtained;
acquiring a temperature difference value according to the indoor temperature and the target temperature;
and if the temperature difference is within the temperature difference range, the air conditioning unit keeps the current frequency running.
In some embodiments, the frequency of the refrigerant compressor of the air conditioning unit is adjusted if the temperature difference is outside the temperature difference range.
In some embodiments, if the temperature difference is lower than the temperature difference range, the operating frequency of a refrigeration compressor of the air conditioning unit is reduced;
and if the temperature difference is higher than the temperature difference range, increasing the operating frequency of a refrigeration compressor of the air conditioning unit.
In some embodiments, the current indoor temperature is acquired at preset time intervals;
acquiring a current temperature difference value according to the current indoor temperature and the target temperature;
and adjusting the operating frequency of a refrigeration compressor of the air conditioning unit according to the temperature difference until the second operating time is greater than or equal to a second time threshold.
In some embodiments, if the second operation time is less than the second time threshold, the operation mode of the air conditioning unit is continuously kept in the cooling capacity balance mode.
In a second aspect, an embodiment of the present application provides a temperature control device for a subway air conditioning unit, including:
the temperature acquisition module is used for acquiring the ambient temperature outside the subway;
the first running time acquisition module is used for acquiring first running time of the air conditioning unit in a refrigeration mode according to the environment temperature;
the first adjusting module is used for adjusting the operation mode of the air conditioning unit to a cold quantity balance mode if the first operation time is less than a first time threshold value;
the second running time acquisition module is used for detecting the second running time of the air conditioning unit in the cold quantity balance mode;
and the second adjusting module is used for adjusting the operation mode of the air conditioning unit to be the refrigeration mode if the second operation time is greater than or equal to a second time threshold.
In a third aspect, an embodiment of the present application provides a computer device, which includes a memory, a processor, and a computer program stored on the memory and executable on the processor, and when the processor executes the computer program, the method for controlling the temperature of the subway air conditioning unit as described in the first aspect is implemented.
In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the method for controlling the temperature of a subway air conditioning unit as described in the first aspect above.
Compared with the prior art, the method for controlling the temperature of the subway air conditioning unit, provided by the embodiment of the application, solves the problem that how to keep the temperature in the train stable without cold output or with cold output reduced when the compressor needs to continuously run due to the shortest running time by controlling the second running time of the air conditioning unit in the cold balance mode, and realizes the temperature stability in the train.
The details of one or more embodiments of the application are set forth in the accompanying drawings and the description below to provide a more thorough understanding of the application.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a schematic diagram of a cooling capacity balance mode of an air conditioning unit according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a fork-type evaporator according to an embodiment of the present application;
fig. 3 is a flowchart of a temperature control method of a subway air conditioning unit according to an embodiment of the application;
fig. 4 is a flowchart of another subway air conditioning unit temperature control method according to the embodiment of the application;
fig. 5 is a preferred flowchart of a temperature control method of a subway air conditioning unit according to an embodiment of the application;
fig. 6 is a block diagram of a temperature control device of a subway air conditioning unit according to an embodiment of the application;
fig. 7 is a schematic diagram of a hardware structure of a temperature control device of a subway air conditioning unit according to an embodiment of the application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be described and illustrated below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments provided in the present application without any inventive step are within the scope of protection of the present application.
It is obvious that the drawings in the following description are only examples or embodiments of the present application, and that it is also possible for a person skilled in the art to apply the present application to other similar contexts on the basis of these drawings without inventive effort. Moreover, it should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions must be made to achieve the developers' specific goals, such as compliance with system-related and business-related constraints, which may vary from one implementation to another.
Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the specification. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of ordinary skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments without conflict.
Unless defined otherwise, technical or scientific terms referred to herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which this application belongs. Reference to "a," "an," "the," and similar words throughout this application are not to be construed as limiting in number, and may refer to the singular or the plural. The present application is directed to the use of the terms "including," "comprising," "having," and any variations thereof, which are intended to cover non-exclusive inclusions; for example, a process, method, system, article, or apparatus that comprises a list of steps or modules (elements) is not limited to the listed steps or elements, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. Reference to "connected," "coupled," and the like in this application is not intended to be limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The term "plurality" as referred to herein means two or more. "and/or" describes an association relationship of associated objects, meaning that three relationships may exist, for example, "A and/or B" may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. Reference herein to the terms "first," "second," "third," and the like, are merely to distinguish similar objects and do not denote a particular ordering for the objects.
In a transition season, the refrigerating capacity is far greater than the actual demand, and the solution that the control cannot be performed through the starting and stopping of the compressor and the frequency adjustment is achieved, so that the refrigerating temperature is too low, the temperature control method for the subway air conditioning unit can enable the compressor not to perform cold output or reduce the cold output any more in the shortest operation time, and the temperature in the train is kept stable.
As shown in fig. 1 to 2, fig. 1 is a schematic view of a cooling capacity balance mode of an air conditioning unit according to an embodiment of the present application, and fig. 2 is a schematic view of a structure of a staggered evaporator according to an embodiment of the present application. The air conditioning unit comprises a refrigeration compressor and a heating compressor. The air conditioning unit enters a cold quantity balance mode when the refrigeration compressor operates, the heating compressor is started, the four-way valve is powered by the electric heating compressor to heat, the evaporator is arranged in a staggered mode, the pipeline A and the pipeline B are alternately arranged, cold and hot offset can be generated, the refrigeration compressor can still perform frequency adjustment according to the indoor load condition at the moment, the heating compressor operates at a low frequency, and the actual refrigerating capacity of the air conditioning unit is represented as the refrigerating capacity of the refrigeration compressor minus the heating capacity of the heating compressor.
The working principle of the refrigeration cycle of the air conditioning unit is as follows: the refrigerant flows, high-temperature and high-pressure refrigerant gas is discharged from the compressor CP2, passes through the four-way valve FV2, enters the condenser COND2, is throttled into low-temperature and low-pressure gas-liquid two-phase refrigerant by the electronic expansion valve EXV2, enters the evaporator EVA2 for heat exchange, and finally returns to the compressor through the four-way valve FV2 and the gas-liquid separator GLS 2.
The working principle of the heating cycle of the air conditioning unit is as follows: the refrigerant flows, high-temperature and high-pressure refrigerant gas is discharged from the compressor CP1, directly enters the evaporator EVA1 through the four-way valve FV2, is throttled into low-temperature and low-pressure gas-liquid two-phase refrigerant through the electronic expansion valve EXV1, enters the condenser COND1 for heat exchange, and finally returns to the compressor CP1 through the four-way valve and the gas-liquid separator.
The embodiment also provides a temperature control method of the subway air conditioning unit. Fig. 3 is a flowchart of a temperature control method for a subway air conditioning unit according to an embodiment of the present application, and as shown in fig. 3, the flowchart includes the following steps:
step S301, acquiring the external ambient temperature of the subway.
Specifically, the air conditioning unit obtains the ambient temperature outside the subway through a temperature sensor.
And step S302, acquiring a first running time of the air conditioning unit in a refrigeration mode according to the ambient temperature.
Specifically, judging whether the ambient temperature is within a preset ambient temperature range; if the ambient temperature is within a preset ambient temperature range, acquiring first running time of the air conditioning unit in a refrigeration mode; and if the ambient temperature is out of the preset ambient temperature range, stopping adjusting the air conditioning unit. In this embodiment, the preset ambient temperature range is 15 ℃ to 25 ℃, and if the ambient temperature is in the range of 15 ℃ to 25 ℃, the current season is considered to be in a transition season, and the first operation time of the air conditioning unit in the refrigeration mode is obtained. It is understood that the temperature range may also be 18 ℃ to 25 ℃, and the specific value can be set by a user, which is not limited herein.
Step S303, if the first running time is less than a first time threshold, the running mode of the air conditioning unit is adjusted to a cold quantity balance mode.
Specifically, if the first running time is less than a first time threshold, the refrigeration compressor of the air conditioning unit cannot finish oil return, and the running mode of the air conditioning unit is adjusted to a cold quantity balance mode; if the first running time is greater than or equal to the first time threshold value, the compressor of the air conditioning unit can finish oil return and can directly stop running. In this embodiment, the first time threshold is 180 seconds. It is understood that the first time threshold may be 240 seconds, 300 seconds, or other values, and it is only necessary that the compressor completes oil return within the first time threshold.
The step of adjusting the operation mode of the air conditioning unit to the cooling capacity balance mode comprises the following steps: acquiring indoor temperature and target temperature inside a subway; acquiring a temperature difference value according to the indoor temperature and the target temperature; and if the temperature difference is within the temperature difference range, the air conditioning unit keeps the current frequency running.
Specifically, if the temperature difference is within the temperature difference range, the air conditioning unit keeps the current frequency running. Further, if the temperature difference is lower than the temperature difference range, the operating frequency of a refrigeration compressor of the air conditioning unit is reduced, and the indoor temperature is raised; and if the temperature difference is higher than the temperature difference range, increasing the operating frequency of a refrigeration compressor of the air conditioning unit to reduce the indoor temperature.
And step S304, detecting the second running time of the air conditioning unit in the cold quantity balance mode.
Specifically, if the second operation time is less than the second time threshold, the operation mode of the air conditioning unit is continuously kept to be the cooling capacity balance mode. In this embodiment, the second time threshold is 180 seconds. It is understood that the second time threshold may also be 240 seconds, 300 seconds or other values, and it is only necessary that the compressor completes oil return within the second time threshold.
The step of obtaining the temperature difference according to the indoor temperature and the target temperature comprises: acquiring the current indoor temperature according to a preset time interval; acquiring a current temperature difference value according to the current indoor temperature and the target temperature; and adjusting the operating frequency of a refrigeration compressor of the air conditioning unit according to the temperature difference until the second operating time is greater than or equal to a second time threshold.
Specifically, the current temperature difference is detected at preset time intervals, and the operation frequency of a refrigeration compressor of the air conditioning unit is adjusted until the second operation time is greater than or equal to a second time threshold. In one embodiment, the time interval is 5 seconds, and the current indoor temperature is acquired every 5 seconds; and acquiring a current temperature difference value according to the current indoor temperature and the target temperature, adjusting the operating frequency of a refrigeration compressor of the air conditioning unit according to the temperature difference value, and circulating until the second operating time is greater than or equal to a second time threshold value.
And step S305, if the second running time is greater than or equal to a second time threshold, adjusting the running mode of the air conditioning unit to a cooling mode.
And the refrigeration mode is that the refrigeration compressor is adjusted in frequency or started and stopped according to the difference value between the indoor temperature and the target temperature.
Specifically, if the second running time is greater than or equal to a second time threshold, the compressor of the air conditioning unit finishes oil return, and the running mode of the air conditioning unit is adjusted to the refrigeration mode.
Through the steps, the second running time of the air conditioning unit in the cold quantity balance mode is controlled, the problem that how to keep the temperature in the vehicle stable because the cold quantity output is not carried out or the cold quantity output is reduced when the compressor needs to run continuously due to the shortest running time is solved, and the temperature in the vehicle is stable.
The embodiment also provides a temperature control method of the subway air conditioning unit. Fig. 4 is a flowchart of another subway air conditioning unit temperature control method according to an embodiment of the present application, and as shown in fig. 4, the flowchart includes the following steps:
in step S401, the ambient temperature Te is determined.
Step S402, judging whether the environment temperature is between 18 ℃ and 25 ℃.
Specifically, if the ambient temperature is between 18 ℃ and 25 ℃, obtaining the running time T of the refrigeration compressor; if the environmental temperature is out of 18 ℃ to 25 ℃, ending the temperature control.
And step S403, judging the running time T of the single compressor.
In step S404, it is determined whether the operating time T is less than 180 seconds.
Specifically, if the running time T is less than 180 seconds, the cold quantity balance mode is started; and if the running time T is greater than or equal to 180 seconds, ending the temperature control.
Step S405, cold balance mode.
Specifically, a cold balance mode is entered, and the heating compressor is started to perform cold balance.
In step S406, it is determined whether the operation time T2 is equal to 180 seconds.
Specifically, if the running time T2 is less than 180 seconds, the cold balance mode is maintained; if the operation time T2 is equal to 180 seconds, the cooling mode is entered.
Step S407, a cooling mode.
Specifically, a cooling mode is entered, and frequency adjustment or start-stop is performed according to the difference between the indoor temperature and the target temperature.
Through above-mentioned step, breakthrough utilizes heat pump set and frequency conversion compressor's advantage under the unable condition through wind channel bypass, reduction compressor operating duration, through cold and hot volume offset, realizes the consumption to unnecessary cold volume, guarantees that the interior temperature of car is unlikely to low excessively, influences passenger experience.
Fig. 5 is a preferred flowchart of a method for controlling the temperature of a subway air conditioning unit according to an embodiment of the present application, and as shown in fig. 5, the method for controlling the temperature of the subway air conditioning unit includes the following steps:
step S501, a cold quantity balance mode.
Specifically, the cold regulation mode is entered.
Step S502, judging whether the temperature difference between the indoor temperature Tin and the target temperature Tic is larger than or smaller than a preset difference value Delta T.
Specifically, when the difference between the indoor temperature (Tin) and the target temperature (Tic) is greater than Δ T, the frequency of the refrigeration compressor is adjusted, the adjustment time interval is PIDt, the frequency is judged again after the PTDt time, the adjustment is continued if the difference is greater than or less than Δ T, and otherwise the existing frequency is maintained.
Step S503, the refrigerant compressor frequency is adjusted.
Specifically, if the temperature difference is lower than the temperature difference range, the operating frequency of a refrigeration compressor of the air conditioning unit is reduced; and if the temperature difference is higher than the temperature difference range, increasing the operating frequency of a refrigeration compressor of the air conditioning unit.
It should be noted that the steps illustrated in the above-described flow diagrams or in the flow diagrams of the figures may be performed in a computer system, such as a set of computer-executable instructions, and that, although a logical order is illustrated in the flow diagrams, in some cases, the steps illustrated or described may be performed in an order different than here.
The embodiment also provides a temperature control device of a subway air conditioning unit, which is used for realizing the above embodiments and preferred embodiments, and the description of the device is omitted. As used hereinafter, the terms "module," "unit," "subunit," and the like may implement a combination of software and/or hardware for a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated.
Fig. 6 is a block diagram of a temperature control device of an air conditioning unit of a subway according to an embodiment of the present application, and as shown in fig. 6, the device includes: a temperature acquisition module 610, a first runtime acquisition module 620, a first adjustment module 630, a second runtime acquisition module 640, and a second adjustment module 650.
The temperature obtaining module 610 is configured to obtain an ambient temperature outside the subway.
The first operation time obtaining module 620 is configured to obtain a first operation time of the air conditioning unit in the cooling mode according to the ambient temperature.
The first adjusting module 630 is configured to adjust the operation mode of the air conditioning unit to a cooling capacity balancing mode if the first operation time is less than a first time threshold.
The second running time obtaining module 640 is configured to detect a second running time of the air conditioning unit in the cooling capacity balancing mode.
The second adjusting module 650 is configured to adjust the operation mode of the air conditioning unit to the cooling mode if the second operation time is greater than or equal to a second time threshold.
The first operation time obtaining module 620 is further configured to determine whether the ambient temperature is within a preset ambient temperature range; and if the ambient temperature is within the preset ambient temperature range, acquiring the first running time of the air conditioning unit in the refrigeration mode.
The first adjusting module 630 is further configured to obtain an indoor temperature and a target temperature inside the subway; acquiring a temperature difference value according to the indoor temperature and the target temperature; and if the temperature difference is within the temperature difference range, the air conditioning unit keeps the current frequency running.
The first adjusting module 630 is further configured to adjust the frequency of the refrigeration compressor of the air conditioning unit if the temperature difference is outside the temperature difference range.
The first adjusting module 630 is further configured to reduce the operating frequency of a refrigeration compressor of the air conditioning unit if the temperature difference is lower than the temperature difference range;
and if the temperature difference is higher than the temperature difference range, increasing the operating frequency of a refrigeration compressor of the air conditioning unit.
The first adjusting module 630 is further configured to obtain a current indoor temperature according to a preset time interval;
acquiring a current temperature difference value according to the current indoor temperature and the target temperature;
and adjusting the operating frequency of a refrigeration compressor of the air conditioning unit according to the temperature difference until the second operating time is greater than or equal to a second time threshold.
The second adjusting module 650 is further configured to, if the second operation time is less than a second time threshold, continuously maintain the operation mode of the air conditioning unit as the cooling capacity balance mode.
The above modules may be functional modules or program modules, and may be implemented by software or hardware. For a module implemented by hardware, the modules may be located in the same processor; or the modules can be respectively positioned in different processors in any combination.
In addition, the method for controlling the temperature of the subway air conditioning unit in the embodiment of the application described in conjunction with fig. 1 can be implemented by a temperature control device of the subway air conditioning unit. Fig. 7 is a schematic diagram of a hardware structure of a temperature control device of a subway air conditioning unit according to an embodiment of the application.
The subway air conditioning unit temperature control apparatus may include a processor 81 and a memory 72 storing computer program instructions.
Specifically, the processor 71 may include a Central Processing Unit (CPU), or A Specific Integrated Circuit (ASIC), or may be configured to implement one or more Integrated circuits of the embodiments of the present Application.
The memory 72 may be used to store or cache various data files that need to be processed and/or used for communication, as well as possible computer program instructions executed by the processor 71.
The processor 71 reads and executes computer program instructions stored in the memory 72 to implement any one of the above-described embodiments of the temperature control method for the subway air conditioning unit.
In some embodiments, the subway air conditioning unit temperature control equipment may further include a communication interface 73 and a bus 70. As shown in fig. 7, the processor 71, the memory 72, and the communication interface 73 are connected via the bus 70 to complete mutual communication.
The communication interface 73 is used for realizing communication among modules, devices, units and/or equipment in the embodiment of the present application. The communication port 73 may also be implemented with other components such as: the data communication is carried out among external equipment, image/data acquisition equipment, a database, external storage, an image/data processing workstation and the like.
The temperature control device for the subway air conditioning unit can execute the temperature control method for the subway air conditioning unit in the embodiment of the application based on the acquired environment temperature, so that the temperature control method for the subway air conditioning unit described in combination with the figure 1 is realized.
In addition, by combining the temperature control method of the subway air conditioning unit in the above embodiments, the embodiments of the present application can be implemented by providing a computer-readable storage medium. The computer readable storage medium having stored thereon computer program instructions; the computer program instructions, when executed by a processor, implement any of the above-described embodiments of a method for controlling the temperature of a subway air conditioning unit.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A temperature control method for a subway air conditioning unit is characterized by comprising the following steps:
acquiring the ambient temperature outside the subway;
acquiring first running time of the air conditioning unit in a refrigeration mode according to the ambient temperature;
if the first running time is less than a first time threshold value, the running mode of the air conditioning unit is adjusted to a cold quantity balance mode;
detecting a second running time of the air conditioning unit in a cold quantity balance mode;
and if the second running time is greater than or equal to a second time threshold value, adjusting the running mode of the air conditioning unit to a refrigeration mode.
2. The method for controlling the temperature of the air conditioning unit in the subway according to claim 1, wherein the obtaining the first running time of the air conditioning unit in the cooling mode according to the environmental temperature comprises:
judging whether the environment temperature is within a preset environment temperature range or not;
and if the ambient temperature is within the preset ambient temperature range, acquiring the first running time of the air conditioning unit in the refrigeration mode.
3. The method for controlling the temperature of the air conditioning unit in the subway as claimed in claim 1, wherein said adjusting the operation mode of the air conditioning unit to the cooling capacity balancing mode comprises:
acquiring indoor temperature and target temperature inside a subway;
acquiring a temperature difference value according to the indoor temperature and the target temperature;
and if the temperature difference is within the temperature difference range, the air conditioning unit keeps the current frequency running.
4. A method as claimed in claim 3, wherein the obtaining a temperature difference value according to the indoor temperature and the target temperature comprises:
and if the temperature difference is out of the temperature difference range, carrying out frequency adjustment on a refrigeration compressor of the air conditioning unit.
5. The method for controlling the temperature of the air conditioning unit of the subway as claimed in claim 4, wherein if the temperature difference is outside the temperature difference range, the adjusting the frequency of the refrigeration compressor of the air conditioning unit comprises:
if the temperature difference is lower than the temperature difference range, reducing the operating frequency of a refrigeration compressor of the air conditioning unit;
and if the temperature difference is higher than the temperature difference range, increasing the operating frequency of a refrigeration compressor of the air conditioning unit.
6. A method as claimed in claim 3, wherein the step of obtaining a temperature difference according to the indoor temperature and the target temperature comprises:
acquiring the current indoor temperature according to a preset time interval;
acquiring a current temperature difference value according to the current indoor temperature and the target temperature;
and adjusting the operating frequency of a refrigeration compressor of the air conditioning unit according to the temperature difference until the second operating time is greater than or equal to a second time threshold.
7. The method for controlling the temperature of the air conditioning unit in the subway as claimed in claim 1, wherein said detecting the second operation time of the air conditioning unit in the cold balance mode comprises:
and if the second running time is less than a second time threshold, the running mode of the air conditioning unit is continuously kept to be a cold quantity balance mode.
8. A temperature control device of a subway air conditioning unit is characterized by comprising:
the temperature acquisition module is used for acquiring the ambient temperature outside the subway;
the first running time acquisition module is used for acquiring first running time of the air conditioning unit in a refrigeration mode according to the environment temperature;
the first adjusting module is used for adjusting the operation mode of the air conditioning unit to a cold quantity balance mode if the first operation time is less than a first time threshold value;
the second running time acquisition module is used for detecting the second running time of the air conditioning unit in the cold quantity balance mode;
and the second adjusting module is used for adjusting the operation mode of the air conditioning unit to be the refrigeration mode if the second operation time is greater than or equal to a second time threshold.
9. Computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the method for controlling the temperature of a subway air conditioning unit as claimed in any one of claims 1 to 7 when executing the computer program.
10. A computer-readable storage medium, on which a computer program is stored, wherein the program, when executed by a processor, implements the method for controlling the temperature of a subway air conditioning unit as claimed in any one of claims 1 to 7.
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| CN202010987397.3A CN114194237B (en) | 2020-09-18 | 2020-09-18 | Temperature control method and device for subway air conditioning unit and readable storage medium |
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| CN202010987397.3A CN114194237B (en) | 2020-09-18 | 2020-09-18 | Temperature control method and device for subway air conditioning unit and readable storage medium |
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| CN115854499B (en) * | 2022-12-21 | 2024-05-10 | 珠海格力电器股份有限公司 | Air conditioning unit control method, air conditioning unit and computer readable storage medium |
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| CN114194237B (en) | 2023-06-06 |
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