CN115127231B - Air conditioning unit, anti-condensation control method thereof, computer device and readable storage medium - Google Patents
Air conditioning unit, anti-condensation control method thereof, computer device and readable storage medium Download PDFInfo
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- CN115127231B CN115127231B CN202210821055.3A CN202210821055A CN115127231B CN 115127231 B CN115127231 B CN 115127231B CN 202210821055 A CN202210821055 A CN 202210821055A CN 115127231 B CN115127231 B CN 115127231B
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- 238000009833 condensation Methods 0.000 title claims abstract description 61
- 238000004378 air conditioning Methods 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 39
- 238000003860 storage Methods 0.000 title claims abstract description 14
- 238000010438 heat treatment Methods 0.000 claims abstract description 58
- 239000003507 refrigerant Substances 0.000 claims abstract description 45
- 230000005494 condensation Effects 0.000 claims abstract description 30
- 238000011144 upstream manufacturing Methods 0.000 claims description 8
- 230000002045 lasting effect Effects 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- 230000017525 heat dissipation Effects 0.000 abstract description 4
- 238000004590 computer program Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- 238000012545 processing Methods 0.000 description 2
- 101100384355 Mus musculus Ctnnbip1 gene Proteins 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- 239000007787 solid Substances 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/20—Electric components for separate outdoor units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
- H05K7/20318—Condensers
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
- H05K7/20381—Thermal management, e.g. evaporation control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
- F24F2013/221—Means for preventing condensation or evacuating condensate to avoid the formation of condensate, e.g. dew
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides an air conditioning unit, an anti-condensation control method thereof, a computer device and a readable storage medium, wherein the air conditioning unit comprises an outdoor unit and an indoor unit which are connected through a refrigerant pipeline; the outdoor unit comprises an outdoor unit heat exchanger, a first throttling device, a heating module and a compressor, and the heating module, the first throttling device, the outdoor unit heat exchanger and the compressor are sequentially connected to a refrigerant pipeline along the flow direction of a refrigerant; the anti-condensation control method comprises the following steps: when heating, judging whether the condensation risk exists according to the ambient temperature and the temperature of the heating module, if the temperature of the heating module is smaller than or equal to the ambient temperature, judging that the condensation risk exists and reducing the opening of the first throttling device so as to improve the temperature of the heating module. The anti-condensation control method of the air conditioning unit can prevent the electric box from generating condensation water so as to cause the short circuit burnout of the driving plate, and improves the heat dissipation reliability of the controller.
Description
Technical Field
The invention relates to the field of consumables of electronic imaging equipment, in particular to an air conditioning unit, an anti-condensation control method thereof, a computer device and a readable storage medium.
Background
With the improvement of the technological level, people increasingly pursue comfort and production efficiency of life. The multi-split air conditioner has the advantages of high temperature control precision, good experience and convenient installation by virtue of large cold energy, and is widely applied to large-space places such as shops, restaurants, schools, warehouses, factories, waiting rooms and the like. The cooling capacity requirement of the multi-split air conditioner is larger, so that the heating value of the controller in the electric box is also larger, and in order to reduce the temperature rise of the controller in the electric box, a refrigerant pipe is required to be added to dissipate heat in the electric box controller of the unit. With the large amount of installation and use after sale, some problems are also exposed, the problem of burnout of a drive board of an external machine electrical box part of the six-generation multi-connected unit is found when the after-sale fault part of the multi-connected unit is rechecked in a factory, water marks are found on a PCB board by inspection, preliminary analysis is that the drive board is burnt out due to short circuit of water in the main board, but after-sale use conditions are checked, a rain shed is arranged at the installation position of the unit, the possibility of rain water inflow is eliminated, the whole machine is arranged to perform a relatively bad nonstandard rain experiment, the electrical box is inspected, no water inflow is avoided, structural design loopholes can be eliminated, the analysis is that the temperature of a refrigerant is influenced by an air conditioning system, the temperature of an I PM module is lower than the environment temperature condition of the electrical box during heating operation, and condensation is generated when the humidity is large, so that the control logic of the refrigerant heat dissipation reliability of the multi-connected unit controller is developed according to the problem, and the refrigerant heat dissipation reliability of the multi-connected unit controller is improved.
The existing multi-split air conditioning unit capable of realizing the control method for preventing the electric box from generating the dew is characterized in that the throttle effect of the electronic expansion valve is reduced by increasing the refrigerant quantity in a pipeline and increasing the opening of the electronic expansion valve at the downstream of the condenser, so that the temperature of the refrigerant is improved, and the temperature of the power module is prevented from being too low. However, after the refrigerant quantity in the pipeline is increased, the opening of the electronic expansion valve is increased, so that the degree of superheat is reduced, the heating effect of the air conditioning unit is affected, and if the degree of superheat is too low, the air suction and liquid carrying are possibly caused, so that hidden danger is caused to the operation reliability of the compressor.
Disclosure of Invention
The first object of the invention is to provide an anti-condensation control method of an air conditioning unit, which can prevent the electric box from generating condensation water to cause the short circuit burnout of a driving plate, improve the heat dissipation reliability of the controller, and prevent the overheat from influencing the heating effect and the operation reliability of a compressor of the air conditioning unit.
The second object of the invention is to provide an air conditioning unit for realizing the anti-condensation control method.
A third object of the present invention is to provide a computer device for implementing the above-mentioned anti-condensation control method.
A fourth object of the present invention is to provide a readable storage medium implementing the above-described anti-condensation control method.
In order to achieve the first object, the present invention provides an anti-condensation control method of an air conditioning unit, the air conditioning unit includes an outdoor unit and an indoor unit connected by a refrigerant pipeline; the outdoor unit comprises an outdoor unit heat exchanger, a first throttling device, a heating module and a compressor, and the heating module, the first throttling device, the outdoor unit heat exchanger and the compressor are sequentially connected to a refrigerant pipeline along the flow direction of a refrigerant; the anti-condensation control method comprises the following steps: when heating, judging whether the condensation risk exists according to the ambient temperature and the temperature of the heating module, if the temperature of the heating module is smaller than or equal to the ambient temperature, judging that the condensation risk exists and reducing the opening of the first throttling device so as to improve the temperature of the heating module.
According to the scheme, in the heating operation of the air conditioning unit adopting the refrigerant heat radiation, the opening degree of the throttling device of the air conditioning unit is adjusted by detecting and comparing the ambient temperature around the air conditioning unit and the temperature of the heating module, so that the temperature of the heating module of the air conditioning unit is kept to be always higher than the ambient temperature. Compared with the prior art, the cooling medium quantity flowing through the first throttling device is reduced in a heating mode, and the reliability is higher.
In a preferred scheme, after the opening degree of the first throttling device is reduced and the first preset time period is continued, judging whether the temperature of the heating module after temperature rise is higher than the ambient temperature or not; if not, judging whether the accumulated time of the temperature of the heating module or the temperature of the refrigerant pipeline connected to the upstream side of the heating module is greater than the ambient temperature within the continuous second preset time period is smaller than a preset time value; if the accumulated time is smaller than the preset time value, judging that the condensation risk still exists, and stopping the operation of the air conditioning unit; if the accumulated time is not less than the preset time value, the step of reducing the opening degree of the first throttling device is continuously executed.
Therefore, the opening degree of the electronic expansion valve is limited, if the opening degree of the electronic expansion valve reaches the minimum, the electronic expansion valve cannot be continuously turned down, otherwise, the high-pressure protection risk exists, the reliability of the air conditioning unit is affected, the temperature of the heating module after the temperature rise is higher than the ambient temperature after the opening degree of the first throttling device and the opening degree of the second throttling device are reduced through the judgment logic, so that the condensation risk is reduced, and if the condensation risk still exists, the air conditioning unit stops running, and the running reliability of the air conditioning unit is guaranteed. Meanwhile, the function of judging the accumulated time of the condensation is added, so that the problem that the condensation is actually generated and the controller main board is burnt out is prevented from being intermittently met.
Further, the second preset time period is 1 hour, and the preset time value is 30 minutes.
In a preferred scheme, the outdoor unit further comprises a refrigerant pipe branch and a second throttling device, wherein two ends of the refrigerant pipe branch are respectively connected with the upstream side of the heating module and the air inlet of the compressor, and the second throttling device is arranged on the refrigerant pipe branch.
Therefore, when the internal exhaust temperature of the compressor is too high, the compressor can report protection and limit the operating frequency of the compressor, so that the operation of the air conditioner unit can be influenced. The air inlet of the compressor is connected with a refrigerant pipe branch at the upstream side of the heating module, the refrigerant can be throttled and cooled through the second throttling device by arranging the second throttling device on the refrigerant pipe branch, and the temperature can be reduced below the suction temperature of the compressor before the second throttling device is opened. In the working process, some liquid refrigerants are conveyed to the compressor through the refrigerant pipe branch, so that the temperature of the refrigerants sucked into the air inlet is lowered, the exhaust temperature is lowered, the reliability of long-term operation of the compressor is facilitated, and the operation time is prolonged.
Further, the opening degree of the second throttle device is reduced while the opening degree of the first throttle device is reduced.
From this, it can be seen that by simultaneously reducing the opening degrees of the first throttle device and the second throttle device, the temperature rising speed of the heat generating module can be increased.
Further, at least one of the first throttling device and the second throttling device is an electronic expansion valve.
In a preferred embodiment, the condition for determining that there is a risk of condensation includes: the temperature of the heating module is smaller than or equal to the ambient temperature and the ambient temperature is larger than the preset temperature.
Further, the preset temperature is-5 ℃.
Therefore, experiments prove that when the ambient temperature is below-5 ℃, the compressor of the air conditioning unit can run at high frequency and condensation can not be generated any more.
In order to achieve the second objective, the present invention provides an air conditioning unit, which includes a processor, and the processor is configured to implement the above-mentioned anti-condensation control method of the air conditioning unit when executing a program stored in a memory.
In order to achieve the third object, the present invention provides a computer device, which includes a processor for implementing the above-mentioned anti-condensation control method of an air conditioning unit when executing a program stored in a memory.
In order to achieve the third object, the present invention provides a readable storage medium having a program stored thereon, which when executed by a processor, implements the above-described anti-condensation control method of an air conditioning unit.
Drawings
FIG. 1 is a system block diagram of an embodiment of an air conditioning unit of the present invention.
Fig. 2 is a flow chart of an embodiment of the anti-condensation control method of the present invention.
The invention is further described below with reference to the drawings and examples.
Detailed Description
Air conditioning unit and anti-condensation control method embodiment thereof:
referring to fig. 1, the air conditioning unit in this embodiment is a multi-connected air conditioning unit, which includes an outdoor unit 1 and indoor units 2 connected by refrigerant pipes 8, the number of the indoor units 2 is more than two, and a plurality of indoor units 2 are connected in parallel. The outdoor unit 1 comprises an outdoor unit heat exchanger 3, a first electronic expansion valve 4, a second electronic expansion valve 5, a heating module 6, a compressor 7, a refrigerant pipe branch 9 and a processor, wherein the heating module 6, the first electronic expansion valve 4, the outdoor unit heat exchanger 3 and the compressor 7 are sequentially connected to the refrigerant pipe 8 along the flow direction of a refrigerant, two ends of the refrigerant pipe branch 9 are respectively connected to the refrigerant pipe 8 on the upstream side 61 of the heating module 6 and an air inlet 71 of the compressor 7, and the second electronic expansion valve 5 is arranged on the refrigerant pipe branch 9. The heating module 6 is typically mainly an ipm module provided in an electrical box, and the processor is configured to implement the following anti-condensation control method when executing a program stored in the memory.
The anti-condensation control method comprises the following steps:
referring to fig. 1 and 2, during heating, after the air conditioning unit stably operates for 20 minutes, step S1 is performed to determine whether there is a condensation risk according to the ambient temperature and the temperature of the heat generating module 6, if the ambient temperature is greater than the preset temperature and the temperature of the heat generating module 6 is less than or equal to the ambient temperature, it is determined that there is a condensation risk, and step S2 is performed to reduce the opening degrees of the first electronic expansion valve 4 and the second electronic expansion valve 5 so as to increase the temperature of the heat generating module 6. After the opening degrees of the first electronic expansion valve 4 and the second electronic expansion valve 5 are reduced and the first preset time period is continued, step S3 is executed to determine whether the temperature of the heated heating module 6 is greater than the ambient temperature, if not, step S4 is executed to determine whether the cumulative time of the temperature of the heating module 6 or the temperature of the refrigerant line 8 connected to the upstream side of the heating module 6 being greater than the ambient temperature is less than the preset time value in the continuous second preset time period. If the accumulated time is smaller than the preset time value, executing step S5, judging that the condensation risk still exists, and stopping the operation of the air conditioning unit; if the accumulated time is not less than the preset time value, the step of reducing the opening of the first electronic expansion valve 4 and the second electronic expansion valve 5 is continued, that is, the step returns to step S2.
Preferably, the second preset time period is 1 hour, the preset time value is 30 minutes, and the preset temperature is-5 ℃. The first preset time period is approximately 20 seconds.
In addition, after the air conditioning unit stops running, the opening degrees of the first electronic expansion valve 4 and the second electronic expansion valve 5 can be increased, so that after the air conditioning unit is started next time, heating is faster, and the heating effect is better. Or when the air conditioning unit is started, the opening degrees of the first electronic expansion valve 4 and the second electronic expansion valve 5 are increased.
The following table shows the corresponding test phenomena of the air conditioning unit in the prior art and the air conditioning unit in the invention when tests are carried out under different environment temperatures, temperatures of the heating module in the high-pressure state of the system, temperatures of the heating module in the low-pressure state of the system, temperatures of the IPM module and the starting capacity of the indoor unit.
The table shows that the temperature of the IPM module after condensation prevention control is greatly improved compared with the temperature of the prior IPM module in the heating operation process of the air conditioning unit under the condition that the ambient temperature is about 23 ℃ through comparison of test data in a laboratory, condensation water is not generated in an electric appliance box from the aspect of experimental phenomena, and the controller does not generate condensation water, so that the reliability of cooling of the refrigerant of the air conditioning unit is improved, and the reliability of operation of the whole machine is ensured.
In addition, in step S1 of other embodiments, it may just determine whether the temperature of the heat generating module is less than or equal to the ambient temperature, so as to determine whether the electrical box has a condensation risk. Other throttling means may be used instead of the electronic expansion valve in the embodiment, such as a capillary tube or the like. In step S2, the temperature of the heat generating module may be increased by decreasing only the opening degree of the first electronic expansion valve.
Computer apparatus embodiment:
the computer device of the invention is a controller arranged in the outdoor unit and comprises a processor, a memory and other devices, such as a singlechip comprising a central processing unit and the like. And the processor is used for realizing the steps of the anti-condensation control method of the air conditioning unit when executing the computer program stored in the memory.
The processor may be a central processing unit (Centra l Process i ng Un it, CPU), but may also be other general purpose processors, digital signal processors (Digita l Signa l Processor, DSP), application specific integrated circuits (App l icat ion Spec ific I ntegrated Ci rcuit, asic), off-the-shelf programmable gate arrays (Fie l d-Programmab l e Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like; the storage data area may store data (such as audio data, phonebook, etc.) created according to the use of the handset, etc. In addition, the memory may include high-speed random access memory, and may also include non-volatile memory, such as a hard disk, memory, plug-in hard disk, smart memory Card (Smart Med ia Card, SMC), secure Digital (SD) Card, flash Card (F1 ash Card), at least one disk storage device, flash memory device, or other volatile solid state storage device.
Computer-readable storage medium embodiments:
the computer readable storage medium of the present invention may be any form of storage medium that is read by a processor of a computer device, including but not limited to a nonvolatile memory, a volatile memory, a ferroelectric memory, etc., on which a computer program is stored, and when the processor of the computer device reads and executes the computer program stored in the memory, the steps of the anti-condensation control method of an air conditioning unit described above may be implemented.
The computer program comprises computer program code which may be in source code form, object code form, executable file or in some intermediate form, etc. The computer readable medium may include: any entity or device capable of carrying computer program code, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer Memory, a Read-only Memory (ROM), a random access Memory (RAM, random Access Memory), an electrical carrier signal, a telecommunications signal, a software distribution medium, and so forth. It should be noted that the content of the computer readable medium can be appropriately increased or decreased according to the requirements of the jurisdiction's jurisdiction and the patent practice, for example, in some jurisdictions, the computer readable medium does not include electrical carrier signals and telecommunication signals according to the jurisdiction and the patent practice.
Finally, it should be emphasized that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention, but rather that various changes and modifications can be made by those skilled in the art without departing from the spirit and principles of the invention, and any modifications, equivalent substitutions, improvements, etc. are intended to be included within the scope of the present invention.
Claims (10)
1. An anti-condensation control method of an air conditioning unit,
the air conditioning unit comprises an outdoor unit and an indoor unit which are connected through a refrigerant pipeline;
the outdoor unit comprises an outdoor unit heat exchanger, a first throttling device, a heating module and a compressor, and the heating module, the first throttling device, the outdoor unit heat exchanger and the compressor are sequentially connected to the refrigerant pipeline along the flow direction of the refrigerant;
it is characterized in that the method comprises the steps of,
the anti-condensation control method comprises the following steps:
when heating, judging whether a condensation risk exists according to the ambient temperature and the temperature of the heating module, and if the temperature of the heating module is smaller than or equal to the ambient temperature, judging that the condensation risk exists and only reducing the opening of the first throttling device;
after the opening degree of the first throttling device is reduced and the first preset time period is continued, judging whether the temperature of the heating module after temperature rise is greater than the ambient temperature or not;
if not, judging whether the temperature of the heating module or the accumulated time of the refrigerant pipeline connected to the upstream side of the heating module, which is higher than the ambient temperature, is smaller than a preset time value or not in a continuous second preset time period;
if the accumulated time is smaller than the preset time value, judging that the condensation risk still exists, and stopping the operation of the air conditioning unit;
and if the accumulated time is not less than the preset time value, continuing to execute the step of reducing the opening degree of the first throttling device.
2. The anti-condensation control method according to claim 1, wherein:
the second preset time period is 1 hour, and the preset time value is 30 minutes.
3. The condensation preventing control method according to claim 1 or 2, characterized in that:
the first throttling device is an electronic expansion valve.
4. The condensation preventing control method according to claim 1 or 2, characterized in that:
conditions for determining the risk of condensation include: the temperature of the heating module is smaller than or equal to the ambient temperature and the ambient temperature is larger than a preset temperature.
5. The anti-condensation control method according to claim 4, wherein:
the preset temperature is-5 ℃.
6. An anti-condensation control method of an air conditioning unit,
the air conditioning unit comprises an outdoor unit and an indoor unit which are connected through a refrigerant pipeline;
the outdoor unit comprises an outdoor unit heat exchanger, a first throttling device, a heating module and a compressor, and the heating module, the first throttling device, the outdoor unit heat exchanger and the compressor are sequentially connected to the refrigerant pipeline along the flow direction of the refrigerant;
it is characterized in that the method comprises the steps of,
the outdoor unit further comprises a refrigerant pipe branch and a second throttling device, wherein two ends of the refrigerant pipe branch are respectively connected with the upstream side of the heating module and the air inlet of the compressor, the second throttling device is arranged on the refrigerant pipe branch, and the second throttling device can reduce the temperature of a refrigerant sucked into the air inlet so as to reduce the exhaust temperature;
the anti-condensation control method comprises the following steps:
when heating, judging whether the condensation risk exists according to the ambient temperature and the temperature of the heating module, and if the temperature of the heating module is smaller than or equal to the ambient temperature, judging that the condensation risk exists and simultaneously reducing the opening degrees of the first throttling device and the second throttling device;
after reducing the opening degrees of the first throttling device and the second throttling device and lasting for a first preset time period, judging whether the temperature of the heating module after temperature rise is higher than the ambient temperature or not;
if not, judging whether the temperature of the heating module or the accumulated time of the refrigerant pipeline connected to the upstream side of the heating module, which is higher than the ambient temperature, is smaller than a preset time value or not in a continuous second preset time period;
if the accumulated time is smaller than the preset time value, judging that the condensation risk still exists, and stopping the operation of the air conditioning unit;
and if the accumulated time is not less than the preset time value, continuing to execute the step of reducing the opening degrees of the first throttling device and the second throttling device.
7. The anti-condensation control method according to claim 6, wherein:
at least one of the first throttling device and the second throttling device is an electronic expansion valve.
8. An air conditioning unit comprising a processor for implementing the anti-condensation control method of an air conditioning unit according to any one of claims 1 to 7 when executing a program stored in a memory.
9. A computer apparatus, characterized in that: the computer device includes a processor for implementing the anti-condensation control method of an air conditioning unit according to any one of claims 1 to 7 when executing a program stored in a memory.
10. A readable storage medium having a program stored thereon, characterized in that: the program, when executed by a processor, implements an anti-condensation control method of an air conditioning unit according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210821055.3A CN115127231B (en) | 2022-07-13 | 2022-07-13 | Air conditioning unit, anti-condensation control method thereof, computer device and readable storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210821055.3A CN115127231B (en) | 2022-07-13 | 2022-07-13 | Air conditioning unit, anti-condensation control method thereof, computer device and readable storage medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115127231A CN115127231A (en) | 2022-09-30 |
| CN115127231B true CN115127231B (en) | 2023-11-24 |
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| CN116045385A (en) * | 2023-02-13 | 2023-05-02 | 珠海格力电器股份有限公司 | Refrigerant heat exchange system, air conditioner and heat exchange method of air conditioner |
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