CN112050349A - Anti-freezing control method, device and equipment and air conditioner - Google Patents
Anti-freezing control method, device and equipment and air conditioner Download PDFInfo
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- CN112050349A CN112050349A CN202010854823.6A CN202010854823A CN112050349A CN 112050349 A CN112050349 A CN 112050349A CN 202010854823 A CN202010854823 A CN 202010854823A CN 112050349 A CN112050349 A CN 112050349A
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
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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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/56—Remote 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
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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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
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
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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
- F24F11/88—Electrical aspects, e.g. circuits
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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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
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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Abstract
The application discloses an anti-freezing control method, an anti-freezing control device, anti-freezing control equipment and an air conditioner. The method is applied to an outer unit of an air conditioner without communication between an inner unit main board and an outer unit main board, and comprises the following steps: acquiring outdoor temperature; if the outdoor temperature is less than or equal to a preset temperature, acquiring the temperature of an internal pipe; judging a temperature interval in which the temperature of the inner machine pipe is located; and adjusting the frequency of the compressor according to a frequency limiting strategy corresponding to the temperature interval. When the outdoor temperature is higher, the freezing phenomenon is not easy to occur, so that the subsequent steps can be executed when the outdoor temperature is less than or equal to the preset temperature; the probability of freezing is different under different temperatures of the inner machine pipe, so that the frequency of the compressor can be adjusted according to a frequency limiting strategy corresponding to a temperature interval where the temperature of the inner machine pipe is located, and the freezing phenomenon is avoided; and the process can be realized without the communication between an internal machine and an external machine.
Description
Technical Field
The application relates to the technical field of air conditioners, in particular to an anti-freezing control method, an anti-freezing control device, anti-freezing control equipment and an air conditioner.
Background
The air conditioner without communication between the inner machine mainboard and the outer machine mainboard is developed for America and other countries, and is one kind of air cooling air conditioning unit.
Air conditioner internal unit mainboard signal, like indoor ambient temperature, evaporimeter tube temperature etc. because the unable output of communication signal, outer quick-witted mainboard can't be handled, can only open the shut down signal through the temperature controller output if temperature point shut down etc. so then lead to the unable application of outer quick-witted mainboard of corresponding state of air conditioner internal unit to judge. Under the partial low temperature condition, because the outside heat transfer effect is splendid, inboard ring temperature is lower, the evaporimeter condition of frosting appears easily, seriously influences the refrigerating output, leads to inboard heat transfer not good simultaneously, and interior machine refrigerant evaporation degree is not high, leads to the circumstances such as air conditioner complete machine system to return liquid to take place.
The existing anti-freezing treatment method is applied to the traditional air conditioner with communication between an internal machine and an external machine, but no effective solution exists at present for the air conditioner without communication between the internal machine and the external machine.
Disclosure of Invention
The embodiment of the application provides an anti-freezing control method, an anti-freezing control device, anti-freezing equipment and an air conditioner, and is used for solving the problem of realizing freezing under the condition that an internal machine and an external machine do not communicate.
In a first aspect, an embodiment of the present application provides an anti-freezing control method, which is applied to an outdoor unit of an air conditioner without communication between an indoor unit main board and an outdoor unit main board, where the method includes:
acquiring outdoor temperature;
if the outdoor temperature is less than or equal to a preset temperature, acquiring the temperature of an internal pipe;
judging a temperature interval in which the temperature of the inner machine pipe is located;
and adjusting the frequency of the compressor according to a frequency limiting strategy corresponding to the temperature interval.
In a possible implementation manner, the adjusting the compressor frequency according to the frequency limiting strategy corresponding to the temperature interval includes:
if the temperature interval where the temperature of the inner machine pipe is located is a first temperature interval, and the frequency limiting strategy corresponding to the first temperature interval is to keep the frequency unchanged, keeping the frequency of the compressor unchanged;
if the temperature interval of the inner machine pipe temperature is a second temperature interval, and the frequency limiting strategy corresponding to the second temperature interval is to reduce the frequency of the compressor, reducing the frequency of the compressor;
if the temperature interval of the inner machine pipe is a third temperature interval and the frequency limiting strategy corresponding to the third temperature interval is shutdown, controlling the compressor to be shutdown;
the temperature value of the first temperature interval is greater than that of the second temperature interval, and the temperature value of the second temperature interval is greater than that of the third temperature interval.
In a possible implementation manner, the frequency limiting policy corresponding to the second temperature interval includes:
the compressor frequency is gradually reduced according to a preset speed.
In a possible implementation manner, the frequency limiting policy corresponding to the third temperature interval includes:
and stopping the machine when the time that the temperature of the inner machine pipe is in the third temperature interval reaches a first preset time.
In a possible implementation manner, the frequency limiting policy corresponding to the third temperature interval further includes:
and reducing the frequency of the compressor before the temperature of the inner machine pipe reaches the first preset time after the temperature of the inner machine pipe is in the third temperature interval.
In one possible implementation, the obtaining of the internal pipe temperature includes:
acquiring the current low-pressure of the air conditioner;
and determining the saturation temperature corresponding to the low-pressure, wherein the saturation temperature is the temperature of the internal machine pipe.
In one possible implementation, the obtaining of the internal pipe temperature includes:
acquiring the detection temperature of a temperature sensing bulb arranged at an air suction port of a compressor;
and compensating the detected temperature to obtain the temperature of the internal machine pipe.
In a possible implementation manner, the compensating the detected temperature to obtain the internal pipe temperature includes:
judging an outdoor temperature interval in which the outdoor temperature is;
and compensating the detection temperature according to the compensation temperature corresponding to the outdoor temperature interval to obtain the temperature of the internal machine pipe.
In one possible implementation, the acquiring the outdoor temperature includes:
and acquiring the outdoor temperature after the current running time of the compressor reaches a second preset time.
In a second aspect, an embodiment of the present application provides an anti-freezing control device, which is applied to an air conditioner without communication between an internal machine motherboard and an external machine motherboard, where the device includes:
the acquisition module is used for acquiring outdoor temperature; if the outdoor temperature is less than or equal to a preset temperature, acquiring the temperature of an internal pipe;
the judging module is used for judging a temperature interval where the temperature of the inner machine pipe is located;
and the adjusting module is used for adjusting the frequency of the compressor according to the frequency limiting strategy corresponding to the temperature interval.
In a third aspect, an embodiment of the present application provides an anti-freezing control apparatus, including: the anti-freeze control method comprises a processor and a memory connected with the processor, wherein the memory is used for storing programs, and the processor calls the programs stored in the memory to execute the anti-freeze control method according to any implementation manner of the first aspect.
In a fourth aspect, an embodiment of the present application provides an air conditioner, where there is no communication between an inner unit main board and an outer unit main board of the air conditioner, and the air conditioner includes the anti-freezing control device according to the third aspect.
In one possible implementation, a bulb or a low-pressure sensor is arranged at the air inlet of the compressor of the air conditioner.
In a fifth aspect, the present application further provides a computer-readable storage medium, where the computer-readable storage medium stores computer instructions, and when the instructions are executed on a computer, the computer is caused to execute the anti-freeze control method according to any implementation manner of the first aspect.
In the above embodiment of the present application, the outdoor temperature may be obtained by the outer motherboard, the temperature of the inner tube is obtained when the outdoor temperature is less than or equal to the preset temperature, the temperature range where the current temperature of the inner tube is located is determined, and the frequency of the compressor is adjusted according to the frequency limiting strategy corresponding to the temperature range. When the outdoor temperature is higher, the freezing phenomenon is not easy to occur, so that the subsequent steps can be executed when the outdoor temperature is less than or equal to the preset temperature; the probability of freezing is different under different temperatures of the inner machine pipe, so that the frequency of the compressor can be adjusted according to a frequency limiting strategy corresponding to a temperature interval where the temperature of the inner machine pipe is located, and the freezing phenomenon is avoided; and the process can be realized without the communication between an internal machine and an external machine.
Drawings
In order to more clearly illustrate the embodiments of the present application 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 application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic flow chart illustrating an anti-freeze control method according to an embodiment of the present application;
FIG. 2 is a second schematic flow chart of the anti-freezing control method according to the embodiment of the present application;
FIG. 3 is a schematic structural diagram of an anti-freezing control device provided by an embodiment of the present application;
fig. 4 is a schematic structural diagram of an anti-freezing control device provided in an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail below. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without making any creative effort, shall fall within the protection scope of the present application.
To solve the problem of freeze prevention in a wireless home air conditioner, embodiments of the present application provide an anti-freeze control method, apparatus, device and air conditioner to perform freeze prevention when an internal and an external units cannot communicate.
Referring to fig. 1, a flowchart of an anti-freezing control method according to an embodiment of the present application is shown, where the method may be executed by an external unit controller of an air conditioner. As shown, the method may include the steps of:
The outdoor temperature has certain relevance with whether the freezing condition can happen, so that the outdoor temperature can be utilized for preliminary screening in the application.
And 102, acquiring the temperature of the internal pipe if the outdoor temperature is less than or equal to the preset temperature.
If the outdoor temperature is high, the possibility of freezing is low, and the anti-freezing process is not required. If the outdoor temperature is low, that is, less than or equal to the preset temperature, because the outside heat exchange is good, and the inside ambient temperature is also relatively low, the possibility of freezing is increased, and the flow of the anti-freezing method provided by the embodiment of the present application is implemented. For example, the preset temperature may be set to 30 ℃, and when the outdoor temperature is 30 ℃ or less, the following steps are continuously performed.
Because the temperature of the inner machine pipe is also in certain correlation with the condition whether the freezing occurs or not, when the current outdoor temperature is determined to be less than or equal to the preset temperature, the temperature of the inner machine pipe can be further obtained, and the anti-freezing measures are determined to be taken according to the temperature of the inner machine pipe.
And 103, judging a temperature interval where the temperature of the internal machine pipe is located.
A plurality of temperature intervals can be preset for the temperature of the compressor, and each temperature interval can be provided with a corresponding frequency limiting strategy, namely, a measure for preventing freezing; after the current temperature of the internal machine pipe is obtained, the temperature interval where the current temperature of the internal machine pipe is located is judged, and therefore the corresponding frequency limiting strategy is determined.
And 104, adjusting the frequency of the compressor according to a frequency limiting strategy corresponding to the temperature interval.
And after the frequency limiting strategy corresponding to the interval where the temperature of the internal machine pipe is located is determined, adjusting the frequency of the compressor according to the frequency limiting strategy. For example, the frequency limiting strategy may include keeping the frequency constant, reducing the frequency, shutting down, or the like, and the compressor is controlled accordingly according to the frequency limiting strategy.
In a specific embodiment, three temperature intervals, namely a first temperature interval, a second temperature interval and a third temperature interval, can be set for the temperature of the inner machine tube in advance, wherein the temperature value of the first temperature interval is greater than that of the second temperature interval, and the temperature value of the second temperature interval is greater than that of the third temperature interval. The frequency limiting strategy corresponding to the first temperature interval is to keep the frequency unchanged, the frequency limiting strategy corresponding to the second temperature interval is to reduce the frequency of the compressor, and the frequency limiting strategy corresponding to the third temperature interval is to stop the compressor.
If the current temperature of the inner machine pipe is in a first temperature interval, correspondingly keeping the running frequency of the compressor unchanged; if the current temperature of the inner machine pipe is in a second temperature interval, correspondingly reducing the running frequency of the compressor; and if the current temperature of the inner machine pipe is in a third temperature interval, controlling the compressor to stop so as to avoid the freezing condition.
Optionally, for the frequency limiting strategy for reducing the compressor frequency corresponding to the second temperature interval, the compressor may be controlled to gradually reduce the compressor frequency according to a preset speed. For example, the compressor may be controlled to decrease the compression frequency at a rate of 2Hz per second until the current inner tube temperature enters the first temperature interval, or until the compressor frequency decreases to the lower operating frequency limit of the compressor.
Optionally, a frequency-limiting strategy for shutdown corresponding to the third temperature interval may be further defined, and after the time when the temperature of the internal machine pipe is in the third temperature interval reaches a first preset time, the internal machine pipe is shut down again. Due to the frequency limiting strategy, a period of time may be required from execution to work, and in order to reduce unnecessary shutdown operations, the compressor may be controlled to be shut down after the time when the internal pipe temperature is determined to be in the third temperature interval reaches the first preset time. For example, the first preset time may be set to 3min, that is, after the temperature of the inner pipe is reduced to the third temperature interval and maintained for 3min, the compressor is controlled to stop; if the temperature of the inner machine pipe is reduced to the third temperature interval, but quickly rises to the second temperature interval, the shutdown control of the compressor is not needed.
Furthermore, when the temperature of the inner machine pipe is detected to be reduced to the third temperature interval but not continuously maintained for the first preset time, the frequency reduction control can be continuously carried out on the compressor. For example, when the temperature of the inner pipe is just detected to be reduced to the third temperature interval, the compressor can be controlled to continue to reduce the frequency until the lower limit of the running frequency of the compressor is reduced; if the temperature of the inner machine pipe does not rise to other temperature intervals within the first preset time, the compressor is controlled to stop at the moment so as to avoid the freezing phenomenon and avoid unnecessary stop operation.
In one possible implementation mode, a temperature sensing bulb can be arranged at an air suction port of the air-conditioning compressor; accordingly, in the step 102, when the temperature of the internal machine pipe is obtained, the detected temperature of the thermal bulb may be obtained, and the detected temperature may be compensated, so as to obtain the temperature of the internal machine pipe. For example, the bulb may be positioned 10-15cm from the compressor suction. Because the temperature sensing bulb is low in price, the freezing prevention is realized through the mode, and the cost cannot be increased.
A plurality of outdoor temperature sections may be set for the outdoor temperature in advance, one compensation temperature being set for each outdoor temperature section. When the detected temperature is compensated, the compensation temperature corresponding to the outdoor temperature interval can be determined according to the outdoor temperature interval in which the current outdoor temperature is located, and then the compensation temperature is used for compensating the detected temperature, so that the temperature of the internal machine pipe is obtained.
For example, 5 outdoor temperature ranges, Tw ≦ 10 ≦ Tw ≦ 0 ℃, -0 ≦ Tw ≦ 10 ≦ Tw ≦ 20 ℃, and-20 ≦ Tw ≦ 30 ℃ may be previously set, where Tw represents the outdoor temperature, and the compensation temperatures corresponding to these 5 temperature ranges are K1, K2, K3, K4, and K5, respectively. Specifically, the compensation temperature Ki can be determined according to actual data and the refrigerating capacity of the air conditioner type. For example, K1 ═ 12 ± 1 ℃, K2 ═ 8 ± 1 ℃, K3 ═ 6 ± 1 ℃, K4 ═ 3 ± 1 ℃, and K5 ═ 0 ℃.
In another possible implementation, a low pressure sensor may be provided at the suction port of the air conditioner compressor; accordingly, in step 102, when the temperature of the internal machine pipe is obtained, the low-pressure detected by the low-pressure sensor may be obtained, and then the saturation temperature corresponding to the detected low-pressure is determined, and the corresponding saturation temperature is used as the temperature of the internal machine pipe. The temperature of the inner machine pipe acquired by the method is more accurate.
Because the phenomena of freezing and internal frosting are easy to occur only after the compressor runs for a period of time, in some embodiments, the anti-freezing process provided by the present application may be executed after the current running time of the compressor reaches the second preset time. For example, the second preset time may be set to 30min, that is, when the current start operation of the compressor is less than 30min, no anti-freezing measures are taken; after 30min of operation, the anti-freezing control method flow is executed.
For a more clear understanding of the above-described embodiments of the present application, reference is now made to FIG. 2 for illustration.
And step 204, judging the temperature interval in which the Tmp is positioned.
And step 205, if T2< Tmp ≦ T1, controlling the compressor to keep the current running frequency.
And step 206, if T3< Tmp is less than or equal to T2, controlling the compressor to reduce the operating frequency. And gradually reducing the operating frequency of the compressor according to a preset speed until T2< Tmp ≦ T1 or until the operating frequency of the compressor is reduced to an allowable lower frequency limit.
And step 207, if the Tmp is less than or equal to T3 and lasts for 3min, controlling the compressor to stop.
In the above embodiment of the present application, the outdoor temperature may be obtained, the temperature of the internal machine pipe is obtained when the outdoor temperature is less than or equal to the preset temperature, the temperature interval where the current temperature of the internal machine pipe is located is determined, and the frequency of the compressor is adjusted according to the frequency limiting strategy corresponding to the temperature interval. When the outdoor temperature is higher, the freezing phenomenon is not easy to occur, so that the subsequent steps can be executed when the outdoor temperature is less than or equal to the preset temperature; the probability of freezing is different under different temperatures of the inner machine pipe, so that the frequency of the compressor can be adjusted according to a frequency limiting strategy corresponding to a temperature interval where the temperature of the inner machine pipe is located, and the freezing phenomenon is avoided; and the process can be realized without the communication between an internal machine and an external machine.
Based on the same technical concept, the embodiment of the present application further provides an anti-freezing control device, which is used for implementing the method embodiment. As shown in fig. 3, the apparatus may include:
an obtaining module 301, configured to obtain an outdoor temperature; if the outdoor temperature is less than or equal to a preset temperature, acquiring the temperature of an internal pipe;
a judging module 302, configured to judge a temperature interval where the temperature of the internal machine pipe is located;
and the adjusting module 303 is configured to adjust the frequency of the compressor according to a frequency limiting strategy corresponding to the temperature interval.
In a possible implementation manner, the adjusting module 303 is specifically configured to:
if the temperature interval where the temperature of the inner machine pipe is located is a first temperature interval, and the frequency limiting strategy corresponding to the first temperature interval is to keep the frequency unchanged, keeping the frequency of the compressor unchanged;
if the temperature interval of the inner machine pipe temperature is a second temperature interval, and the frequency limiting strategy corresponding to the second temperature interval is to reduce the frequency of the compressor, reducing the frequency of the compressor;
if the temperature interval of the inner machine pipe is a third temperature interval and the frequency limiting strategy corresponding to the third temperature interval is shutdown, controlling the compressor to be shutdown;
the temperature value of the first temperature interval is greater than that of the second temperature interval, and the temperature value of the second temperature interval is greater than that of the third temperature interval.
In a possible implementation manner, the frequency limiting policy corresponding to the second temperature interval includes:
the compressor frequency is gradually reduced according to a preset speed.
In a possible implementation manner, the frequency limiting policy corresponding to the third temperature interval includes:
and stopping the machine when the time that the temperature of the inner machine pipe is in the third temperature interval reaches a first preset time.
In a possible implementation manner, the frequency limiting policy corresponding to the third temperature interval further includes:
and reducing the frequency of the compressor before the temperature of the inner machine pipe reaches the first preset time after the temperature of the inner machine pipe is in the third temperature interval.
In a possible implementation manner, the obtaining module 301, when obtaining the temperature of the inner tube, is specifically configured to:
acquiring the current low-pressure of the air conditioner;
and determining the saturation temperature corresponding to the low-pressure, wherein the saturation temperature is the temperature of the internal machine pipe.
In a possible implementation manner, the obtaining module 301, when obtaining the temperature of the inner tube, is specifically configured to:
acquiring the detection temperature of a temperature sensing bulb arranged at an air suction port of a compressor;
and compensating the detected temperature to obtain the temperature of the internal machine pipe.
In a possible implementation manner, the obtaining module 301, when compensating the detected temperature to obtain the temperature of the internal pipe, is specifically configured to:
judging an outdoor temperature interval in which the outdoor temperature is;
and compensating the detection temperature according to the compensation temperature corresponding to the outdoor temperature interval to obtain the temperature of the internal machine pipe.
In a possible implementation manner, the obtaining module 301, when obtaining the outdoor temperature, is specifically configured to:
and acquiring the outdoor temperature after the current running time of the compressor reaches a second preset time.
In the above embodiment of the present application, the outdoor temperature may be obtained, the temperature of the internal machine pipe is obtained when the outdoor temperature is less than or equal to the preset temperature, the temperature interval where the current temperature of the internal machine pipe is located is determined, and the frequency of the compressor is adjusted according to the frequency limiting strategy corresponding to the temperature interval. When the outdoor temperature is higher, the freezing phenomenon is not easy to occur, so that the subsequent steps can be executed when the outdoor temperature is less than or equal to the preset temperature; the probability of freezing is different under different temperatures of the inner machine pipe, so that the frequency of the compressor can be adjusted according to a frequency limiting strategy corresponding to a temperature interval where the temperature of the inner machine pipe is located, and the freezing phenomenon is avoided; and the process can be realized without the communication between an internal machine and an external machine.
Based on the same technical concept, embodiments of the present application further provide an anti-freezing control apparatus, as shown in fig. 4, the apparatus may include: a processor 401 and a memory 402 connected to the processor 401, where the memory 402 is used to store a program, and the processor 401 calls the program stored in the memory 402 to execute the anti-freeze control method according to any implementation manner of the foregoing method embodiments.
Based on the same technical concept, an embodiment of the present application further provides an air conditioner, where there is no communication between an inner machine main board and an outer machine main board of the air conditioner, and the air conditioner includes the anti-freezing control device according to the third aspect.
In a possible implementation manner, a temperature sensing bulb or a low-pressure sensor is arranged at a compressor air suction outlet of the air conditioner.
Based on the same technical concept, embodiments of the present application further provide a computer-readable storage medium storing computer instructions, which, when executed on a computer, cause the computer to execute the above-mentioned anti-freeze control method.
It should be noted that the terms "first", "second", and the like in the description of the embodiments of the present application are used for distinguishing and not to indicate or imply relative importance or precedence. Further, in the description of the present application, the meaning of "a plurality" means at least two unless otherwise specified.
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 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.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (13)
1. An anti-freezing control method is applied to an outdoor unit of an air conditioner without communication between an indoor unit main board and an outdoor unit main board, and comprises the following steps:
acquiring outdoor temperature;
if the outdoor temperature is less than or equal to a preset temperature, acquiring the temperature of an internal pipe;
judging a temperature interval in which the temperature of the inner machine pipe is located;
and adjusting the frequency of the compressor according to a frequency limiting strategy corresponding to the temperature interval.
2. The method of claim 1, wherein the adjusting the compressor frequency according to the frequency limiting strategy corresponding to the temperature interval comprises:
if the temperature interval where the temperature of the inner machine pipe is located is a first temperature interval, and the frequency limiting strategy corresponding to the first temperature interval is to keep the frequency unchanged, keeping the frequency of the compressor unchanged;
if the temperature interval of the inner machine pipe temperature is a second temperature interval, and the frequency limiting strategy corresponding to the second temperature interval is to reduce the frequency of the compressor, reducing the frequency of the compressor;
if the temperature interval of the inner machine pipe is a third temperature interval and the frequency limiting strategy corresponding to the third temperature interval is shutdown, controlling the compressor to be shutdown;
the temperature value of the first temperature interval is greater than that of the second temperature interval, and the temperature value of the second temperature interval is greater than that of the third temperature interval.
3. The method of claim 2, wherein the frequency-limiting strategy for the second temperature interval comprises:
the compressor frequency is gradually reduced according to a preset speed.
4. The method of claim 2, wherein the frequency limiting strategy for the third temperature interval comprises:
and stopping the machine when the time that the temperature of the inner machine pipe is in the third temperature interval reaches a first preset time.
5. The method of claim 3, wherein the frequency limiting strategy for the third temperature interval further comprises:
and reducing the frequency of the compressor before the temperature of the inner machine pipe reaches the first preset time after the temperature of the inner machine pipe is in the third temperature interval.
6. The method of claim 1, wherein the obtaining an internal machine tube temperature comprises:
acquiring the current low-pressure of the air conditioner;
and determining the saturation temperature corresponding to the low-pressure, wherein the saturation temperature is the temperature of the internal machine pipe.
7. The method of claim 1, wherein the obtaining an internal machine tube temperature comprises:
acquiring the detection temperature of a temperature sensing bulb arranged at an air suction port of a compressor;
and compensating the detected temperature to obtain the temperature of the internal machine pipe.
8. The method of claim 7, wherein said compensating said sensed temperature to obtain an internal machine tube temperature comprises:
judging an outdoor temperature interval in which the outdoor temperature is;
and compensating the detection temperature according to the compensation temperature corresponding to the outdoor temperature interval to obtain the temperature of the internal machine pipe.
9. The method of claim 1, wherein said obtaining an outdoor temperature comprises:
and acquiring the outdoor temperature after the current running time of the compressor reaches a second preset time.
10. The utility model provides an anti-freezing controlling means which characterized in that is applied to the air conditioner that does not have the communication between interior machine mainboard and the outer quick-witted mainboard, the device includes:
the acquisition module is used for acquiring outdoor temperature; if the outdoor temperature is less than or equal to a preset temperature, acquiring the temperature of an internal pipe;
the judging module is used for judging a temperature interval where the temperature of the inner machine pipe is located;
and the adjusting module is used for adjusting the frequency of the compressor according to the frequency limiting strategy corresponding to the temperature interval.
11. An anti-freezing control apparatus, comprising: a processor and a memory coupled to the processor, the memory for storing a program, the processor calling the program stored in the memory to perform the method of any of claims 1-9.
12. An air conditioner characterized in that there is no communication between an inner machine main board and an outer machine main board of the air conditioner, the air conditioner comprising the anti-freezing control device as claimed in claim 11.
13. The air conditioner as claimed in claim 12, wherein a bulb or a low pressure sensor is provided at a compressor suction port of the air conditioner.
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| CN114608145A (en) * | 2022-02-24 | 2022-06-10 | 青岛海尔空调器有限总公司 | Control method and control device for air conditioner, air conditioner and storage medium |
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