CN110848903A - Air conditioner exhaust fluctuation control method and device, air conditioner and storage medium - Google Patents
Air conditioner exhaust fluctuation control method and device, air conditioner and storage medium Download PDFInfo
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- CN110848903A CN110848903A CN201911138347.1A CN201911138347A CN110848903A CN 110848903 A CN110848903 A CN 110848903A CN 201911138347 A CN201911138347 A CN 201911138347A CN 110848903 A CN110848903 A CN 110848903A
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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
- F24F11/62—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
- F24F11/65—Electronic processing for selecting an operating mode
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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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Abstract
The invention provides an air conditioner exhaust fluctuation control method, an air conditioner exhaust fluctuation control device, an air conditioner and a storage medium, wherein the control method comprises the following steps: acquiring a target superheat degree, an upper limit value of exhaust temperature and current exhaust temperature; when the current exhaust temperature is greater than the exhaust temperature upper limit value, controlling the air conditioner to enter a first control mode so as to reduce the exhaust temperature; and when the first control mode exit condition is met, controlling the air conditioner to enter a third control mode so as to correct the target superheat degree. According to the invention, after the exhaust temperature is judged to be higher than the upper limit value of the exhaust temperature for the first time, the target superheat degree is corrected, the target superheat degree of the internal machine is reduced in advance, and the exhaust is maintained in a stable state.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner exhaust fluctuation control method and device, an air conditioner and a storage medium.
Background
The expansion valve plays an important role in a refrigeration system, and under the condition that the control of the expansion valve is not good, for example, when the opening degree of the valve is controlled to be too small or too large, periodic oscillation of the exhaust of the press can be caused, namely when the exhaust temperature is too high, the internal valve can be forced to be opened, the exhaust temperature is reduced after liquid is returned for a short time or the specific gravity of the wet refrigerant is increased, the internal valve is closed under the control of the superheat degree after the exhaust temperature is reduced, the specific gravity of the wet refrigerant is reduced, the exhaust temperature is increased, and the exhaust temperature is caused to fluctuate frequently due to the reciprocating circulation, so that the working.
Disclosure of Invention
The invention solves the problem that the working stability of a system is influenced by periodic oscillation of the exhaust of a press in the control of the existing air conditioner.
In order to solve the above problems, the present invention provides an air conditioner exhaust fluctuation control method, which comprises the following steps:
acquiring a target superheat degree, an upper limit value of exhaust temperature and current exhaust temperature;
when the current exhaust temperature is greater than the exhaust temperature upper limit value, controlling the air conditioner to enter a first control mode so as to reduce the exhaust temperature;
and when the first control mode exit condition is met, controlling the air conditioner to enter a third control mode so as to correct the target superheat degree.
According to the air conditioner exhaust fluctuation control method provided by the invention, after the exhaust temperature is judged to be higher than the exhaust temperature upper limit value for the first time, the target superheat degree is corrected, the target superheat degree of the inner machine is reduced in advance, the opening degree of the inner machine valve is increased, the exhaust is maintained in a stable state, frequent fluctuation of the inner machine valve caused by re-triggering of the first control mode is avoided, and the comfort of the air conditioner is improved.
Further, the third control mode specifically includes:
re-acquiring the current exhaust temperature;
acquiring the difference value between the newly acquired current exhaust temperature and the exhaust temperature upper limit value;
and correcting the target superheat degree according to the difference value to obtain a target superheat degree correction value.
Because the system triggers the first control mode once, the invention corrects the target superheat degree in advance to reduce the target superheat degree and further reduce the exhaust fluctuation in order to prevent the first control mode from being triggered again, and corrects the target superheat degree to different degrees according to the comparison result of the current exhaust temperature and the upper limit value of the exhaust temperature, so that the exhaust temperature is maintained in a stable state, and the working stability of the system is improved.
Further, the correcting the target superheat degree according to the difference value to obtain a target superheat degree correction value specifically includes:
when the exhaust temperature difference is larger than or equal to a first set value, the target superheat correction value is equal to the target superheat;
when the exhaust temperature difference is smaller than the first set value and larger than a second set value, the target superheat correction value is smaller than the target superheat by a first amplitude;
when the exhaust temperature difference is smaller than or equal to the second set value, the target superheat correction value is smaller than the target superheat by a second amplitude, and the second amplitude is larger than the first amplitude;
according to different degrees that the current exhaust temperature is lower than the upper limit value of the exhaust temperature, different correction amplitudes are executed on the target superheat degree, the closer the current exhaust temperature is to the upper limit value of the exhaust temperature, the larger the reduction amplitude of the target superheat degree is, and the farther the current exhaust temperature is from the upper limit value of the exhaust temperature, the smaller the reduction amplitude of the target superheat degree is. Therefore, the target superheat degree is reduced to increase the opening degree of the internal valve, the exhaust temperature is prevented from rising, the first control mode is triggered again, and the exhaust temperature is caused to fluctuate periodically in such a circulating mode.
Further, the method also comprises the following steps:
and when the current exhaust temperature is less than or equal to the exhaust temperature upper limit value or after the air conditioner exits from the third control mode, controlling the air conditioner to enter a second control mode so as to realize the adjustment of the opening of the internal engine valve.
Therefore, after the current exhaust temperature is obtained, when the current exhaust temperature is smaller than or equal to the exhaust temperature upper limit value, the first control mode is not required to be entered, but the second control mode is directly entered, namely, the opening degree of the internal valve is controlled according to the comparison result of the target superheat degree and the actual superheat degree, so that the exhaust temperature is controlled. And when the current exhaust temperature is greater than the upper limit value of the exhaust temperature, the target superheat degree is corrected after the exhaust temperature is reduced in the first control mode, and the opening degree of the internal valve is controlled according to the comparison result of the corrected target superheat degree and the actual superheat degree. Because the target superheat degree is corrected in advance, the control of the internal machine valve according to the superheat degree difference value is more stable, and the exhaust temperature is maintained in a stable state.
Further, the second control mode specifically includes:
acquiring an actual superheat degree;
controlling the opening of the internal machine valve according to the actual superheat degree and the simulated target superheat degree; wherein the quasi-target superheat degree is the target superheat degree or the target superheat degree correction value.
Therefore, the control of the internal machine valve is realized according to the superheat degree difference value.
Further, before controlling the internal valve to perform the closing, the method further comprises:
acquiring a superheat difference value between the actual superheat and the quasi-target superheat;
when the absolute value of the superheat degree difference value is larger than a third set value, controlling the internal valve to be closed according to a first step number;
when the absolute value of the superheat degree difference is smaller than or equal to the third set value and larger than a fourth set value, controlling the internal machine valve to be closed according to a second step number;
when the absolute value of the superheat degree difference value is smaller than or equal to the fourth set value, controlling the internal valve not to act; wherein the first number of steps is greater than the second number of steps.
The invention optimizes the valve closing mode of the internal valve, controls the internal valve to close in a smaller range under the condition that the actual superheat degree is close to the target superheat degree, maintains the air conditioning system in a stable state, improves the comfort, prevents the exhaust temperature from rising due to the over-small closing of the internal valve, and further triggers the forced opening control of the internal valve again to cause frequent fluctuation of the exhaust temperature and frequent fluctuation of the internal valve. And under the condition that the actual superheat degree is far less than the target superheat degree, the liquid return of the internal machine is judged to be serious, and a large amount of refrigerant is not evaporated in time, so that the internal machine valve is controlled to be closed to a small extent, the valve is closed quickly in time, the liquid return is prevented, and the reliability of the internal machine is ensured in time. According to the invention, through changing the valve closing mode of the internal valve, the exhaust temperature rise caused by improper valve closing is avoided, the target superheat degree is frequently adjusted by the system, the reliability of controlling the opening degree of the internal valve according to the actual superheat degree and the target superheat degree is reduced, and the system stability is reduced.
Further, the first control mode exit condition is a first condition or a second condition, wherein,
the first condition is: the current exhaust temperature is obtained again in one period until the current exhaust temperature is reduced to a preset target exhaust temperature;
the second condition is: and operating in the first control mode for a first preset time.
The invention judges whether to exit the forced open control of the internal valve of the first control mode according to the detected exhaust temperature, and exits the first control mode when the exhaust temperature is lower than the target exhaust temperature or the time required for the exhaust temperature to fall below the target exhaust temperature is obtained according to experience and the first control mode is operated for the first preset time, and both the two judgment modes are simpler.
The present invention also provides an air conditioner exhaust fluctuation control apparatus, including:
the device comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring the current exhaust temperature, the upper limit value of the exhaust temperature, the actual superheat degree and the target superheat degree;
the control unit is used for controlling the air conditioner to enter a first control mode according to the current exhaust temperature and the upper limit value of the exhaust temperature so as to reduce the exhaust temperature;
the control unit is further used for controlling the air conditioner to enter a third control mode after the first control mode exit condition is met so as to correct the target superheat degree.
The invention also provides an air conditioner, which comprises a computer readable storage medium and a processor, wherein the computer readable storage medium is used for storing a computer program, and the computer program is read by the processor and runs to realize the air conditioner exhaust fluctuation control method.
The invention also provides a computer readable storage medium, which stores a computer program, and when the computer program is read and executed by a processor, the computer program realizes the air conditioner exhaust fluctuation control method.
Compared with the prior art, the air conditioner exhaust fluctuation control device and the air conditioner have the same advantages as the air conditioner exhaust fluctuation control method, and are not repeated herein.
Drawings
FIG. 1 is a flow chart of an air conditioner exhaust fluctuation control method according to an embodiment of the present invention;
FIG. 2 is a flow chart of a third control mode in an embodiment of the present invention;
FIG. 3 is a flow chart of an air conditioner exhaust fluctuation control method according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Referring to fig. 1, an embodiment of the invention provides an air conditioner exhaust fluctuation control method, including the following steps: acquiring a target superheat degree, an upper limit value of exhaust temperature and current exhaust temperature;
when the current exhaust temperature is greater than the upper limit value of the exhaust temperature, controlling the air conditioner to enter a first control mode so as to reduce the exhaust temperature;
and when the first control mode exit condition is met, controlling the air conditioner to enter a third control mode so as to correct the target superheat degree.
In this embodiment, when it is detected that the exhaust temperature of the compressor is higher than the upper limit of the set exhaust temperature, it indicates that the exhaust temperature of the air conditioning system is too high, and the air conditioner needs to be controlled to operate in the first control mode, and further, the first control mode is to control the internal engine valve to be forcibly opened, so that the specific gravity of the wet refrigerant is increased, or the liquid is returned for a short time, so as to lower the exhaust temperature.
When the first control mode exit condition is reached, the first control mode is exited. The first control mode exit condition is a first condition or a second condition:
the first condition is: acquiring the primary exhaust temperature again in one period until the exhaust temperature is reduced to a preset target exhaust temperature;
the second condition is: and operating in the first control mode for a first preset time.
It should be understood that the current exhaust temperature is reacquired after the first preset time of operation in the first control mode, which is empirically determined, which is necessarily lower than the upper exhaust temperature limit.
Further, after exiting the first control mode, the mobile terminal enters a third control mode, as shown in fig. 2, the third control mode specifically includes the following steps:
re-acquiring the current exhaust temperature;
acquiring an exhaust temperature difference value between the newly acquired current exhaust temperature and the exhaust temperature upper limit value;
and correcting the target superheat degree according to the size of the exhaust temperature difference to obtain a target superheat degree correction value.
When the difference in the exhaust gas temperatures is greater than or equal to the first set value, it is indicated that the exhaust gas temperature has been reduced to the appropriate section by the first control mode, and at this time, the target superheat degree is not corrected, i.e., the target superheat degree correction value is equal to the target superheat degree.
And when the exhaust temperature difference is smaller than or equal to a second set value, controlling the target superheat degree to be reduced by a second amplitude, namely controlling the target superheat degree correction value to be smaller than the target superheat degree by a second amplitude.
When the difference value of the exhaust temperatures is smaller than or equal to the second set value, under the condition that the known system triggers the first control mode, the exhaust temperature is still in a higher range or is close to the upper limit value of the exhaust temperature, under the condition, the exhaust temperature is easily increased continuously and exceeds the upper limit value of the exhaust temperature again, and the first control mode is triggered again, namely the internal valve forced opening mode is triggered.
The internal valve generally adopts an expansion valve, and in the pipe opening control of the expansion valve, the expansion valve generally follows the principle of 'slow opening and fast closing' so as to prevent the system from not reacting in time due to too slow valve closing action or too fast valve opening speed, so that the air suction and liquid return of the press are caused, and the service life of the press is shortened. And the valve closing of the expansion valve is too fast, so that the valve closing is over-head, when the exhaust temperature is detected to be still at a high level after the first control mode is exited, the subsequent internal valves need to be closed down under the control of superheat degree, and the exhaust temperature is further increased. And because the internal valve is easy to cause the closing head caused by the over-fast valve closing in the valve closing process, the exhaust temperature is easy to rise, and then the first control mode is triggered, so circulation is performed, the exhaust is repeatedly fluctuated, the internal valve is frequently fluctuated, and the stable output of the internal valve capacity and the use comfort of a user are influenced.
Therefore, in this embodiment, when the difference between the upper limit value of the exhaust temperature and the current exhaust temperature is less than or equal to the second set value, the target superheat degree is reduced, so that the indoor unit valve is opened greatly, the actual superheat degree is reduced, the exhaust temperature is reduced in advance, the repeated triggering of the first control mode is avoided, and the repeated fluctuation of the indoor unit valve is avoided.
And when the difference value between the upper limit value of the exhaust temperature and the current exhaust temperature is larger than a second set value and smaller than a first set value, controlling the target superheat degree to reduce by a first amplitude, namely controlling the target superheat degree correction value to be smaller than the target superheat degree by a first amplitude, wherein the first amplitude is smaller than the second amplitude.
Preferably, the first set point is 10 ℃, the second set point is 5 ℃, the first amplitude is 1 ℃ and the second amplitude is 2 ℃.
The embodiment executes different correction ranges on the target superheat degree according to different degrees of the current exhaust temperature lower than the upper limit value of the exhaust temperature, wherein the closer the current exhaust temperature is to the upper limit value of the exhaust temperature, the larger the reduction range of the target superheat degree is, and the farther the current exhaust temperature is from the upper limit value of the exhaust temperature, the smaller the reduction range of the target superheat degree is.
One specific implementation of the third control mode is as follows: the upper limit of the exhaust temperature was 94 ℃ and the target superheat was 2 ℃. And (4) starting the refrigerator, wherein the exhaust temperature rises to 96 ℃ after a period of time, and the internal engine valve is forcibly opened for control when the exhaust is triggered to be high. Then the exhaust temperature is reduced to 91 ℃, the difference between the upper limit value of the exhaust temperature and the current exhaust temperature is 5 ℃, the target superheat degree of the inner machine is controlled to be corrected to be 0 ℃ from the original 2 ℃, then the inner machine valve is opened to be large under the control of the target superheat degree, the exhaust temperature is basically maintained to be 92 ℃, the inner machine outputs stably, and the exhaust fluctuation is eliminated. And then, the frequency output of the compressor is reduced due to load change, the exhaust gas is also reduced, and when the exhaust gas is lower than 84 ℃, the superheat degree of the internal machine is recovered to be normal without correcting the target superheat degree.
Further, in the air conditioner exhaust fluctuation control method, when the exhaust temperature is less than or equal to the exhaust temperature upper limit value, or after the third control mode is exited, the air conditioner is controlled to enter the second control mode;
the second control mode is that the opening of the internal machine valve is controlled according to the actual superheat degree and the simulated target superheat degree; wherein the target superheat degree is a target superheat degree or a target superheat degree correction value.
In one specific embodiment, as shown in fig. 3, the method for controlling the air conditioner exhaust fluctuation specifically includes:
acquiring a target superheat degree, an upper limit value of exhaust temperature and current exhaust temperature;
judging whether the current exhaust temperature is greater than the upper limit value of the exhaust temperature, if so, controlling the air conditioner to enter a first control mode, and otherwise, controlling the air conditioner to enter a second control mode;
judging whether a first control mode exit condition is reached, if so, controlling the air conditioner to enter a third control mode, otherwise, controlling the air conditioner to continue the first control mode, and continuously judging whether the first control mode exit condition is reached;
and after the air conditioner exits the third control mode, controlling the air conditioner to enter a second control mode.
Further, the second control mode specifically includes the steps of:
acquiring the current actual superheat degree;
comparing the actual superheat degree with the simulated target superheat degree to obtain a second comparison result; wherein the target superheat degree is a target superheat degree or a target superheat degree correction value;
controlling the opening of the internal machine valve according to a second comparison result, and acquiring the current exhaust temperature again after a second preset time; wherein controlling the opening of the internal machine valve comprises:
when the actual superheat degree is larger than the preset target superheat degree, controlling the opening of an internal machine valve to be large;
and when the actual superheat degree is smaller than the target superheat degree, controlling the internal machine valve to be closed.
It should be noted that, when the current exhaust temperature is compared with the upper limit value of the exhaust temperature, if the current exhaust temperature is not greater than the upper limit value of the exhaust temperature, the second control mode is entered, that is, the opening of the internal engine valve is controlled according to the actual superheat degree and the target superheat degree, and at this time, the target superheat degree is the obtained target superheat degree. And if the current exhaust temperature is greater than the upper limit value of the exhaust temperature, entering a first control mode and then entering a second control mode, wherein the target superheat degree in the second control mode is the target superheat degree correction value.
Further, before controlling the internal machine valve to be closed, the method also comprises the following steps:
obtaining a difference value between the actual superheat degree and the simulated target superheat degree to obtain a superheat degree difference value;
and judging whether the absolute value of the superheat degree difference is larger than a third set value or not, if so, controlling the internal valve to be turned off according to a first step number, otherwise, judging whether the absolute value of the superheat degree difference is smaller than the third set value and larger than a fourth set value or not, if so, controlling the internal valve to be turned off according to a second step number, and otherwise, controlling the internal valve not to act. Wherein the first number of steps is greater than the second number of steps.
Preferably, the third set point is 3, the first number of steps is 4b, and the second number of steps is b, where b is numerically equal to the absolute value of the superheat difference.
In the prior art, when the actual superheat degree is smaller than the target superheat degree, the internal valve is controlled to be closed according to the preset step number. This embodiment has optimized the mode of closing the valve of interior valve, and under the condition that actual superheat degree is close target superheat degree, the control interior valve is closed for a short time with less range, maintains air conditioning system steady state, improves the travelling comfort, prevents that interior valve from closing the undersize and leading to exhaust temperature to rise, and then triggers interior valve once more and forces big control, causes exhaust temperature frequent fluctuation to and interior valve frequent fluctuation. And under the condition that the actual superheat degree is far less than the target superheat degree, the liquid return of the internal machine is judged to be serious, and a large amount of refrigerant is not evaporated in time, so that the internal machine valve is controlled to be closed to a small extent, the valve is closed quickly in time, the liquid return is prevented, and the reliability of the internal machine is ensured in time.
Further, when the actual superheat degree is smaller than the target superheat degree, controlling the internal valve to close further comprises: and judging whether the internal valve reaches a preset valve opening lower limit, if so, detecting the current exhaust temperature, comparing the current exhaust temperature with an exhaust temperature upper limit value, if the exhaust temperature is greater than the exhaust temperature upper limit value, entering a first control mode, reducing the exhaust temperature in time, and correcting the target superheat degree. Otherwise, continuing to control in the second control mode.
According to the air conditioner exhaust fluctuation control method provided by the embodiment of the invention, after the exhaust temperature is judged to be higher than the exhaust temperature upper limit value for the first time, the target superheat degree of the inner machine is reduced in advance, and then the opening degree of the inner machine valve is increased, so that the exhaust is maintained in a stable state, and frequent fluctuation of the inner machine valve caused by re-triggering of the first control mode is avoided, and the comfort of the air conditioner is improved.
One specific implementation of the second control mode is as follows: the upper limit value of the exhaust temperature is set to be 95 ℃, and the target superheat degree of the internal machine is set to be 2 ℃. In the outdoor unit refrigeration mode, the detected exhaust temperature is 100 ℃, the inner air pipe temperature is 16 ℃, the liquid pipe temperature is 15 ℃, the actual superheat degree is 1 ℃, at this time, although the actual superheat degree is smaller than the target superheat degree, the inner valve is required to be opened small according to the second control mode, because the exhaust temperature is higher than the upper limit value of the exhaust temperature, the inner valve is required to be triggered to be forcibly opened for large control, the control period of the inner valve is 40s once, the inner valve is opened for 10pls after 10 periods, at this time, the exhaust temperature is reduced from 100 ℃ to 94 ℃, and the inner valve is withdrawn from the forced opening control. After the forced opening control of the internal valve, the actual superheat degree is 0 ℃, is less than 2 ℃ of the target superheat degree, the internal valve is controlled to be closed for 40s at one time, and the internal valve is closed for 1pls in one period until the superheat degree is restored to the target 2 ℃. If 8pls is closed in one cycle in the prior art valve closing manner, the head is easily closed.
Another embodiment of the present invention provides an air conditioner exhaust fluctuation control apparatus, including:
the acquisition unit is used for acquiring the current exhaust temperature, the upper limit value of the exhaust temperature, the actual superheat degree and the target superheat degree;
the control unit is used for controlling the air conditioner to enter a first control mode according to the current exhaust temperature and the upper limit value of the exhaust temperature so as to reduce the exhaust temperature;
the control unit is also used for controlling the air conditioner to enter a third control mode after the first control mode exit condition is met so as to correct the target superheat degree.
Another embodiment of the present invention further provides an air conditioner, including a computer-readable storage medium storing a computer program and a processor, where the computer program is read and executed by the processor to implement an air conditioner exhaust fluctuation control method.
Another embodiment of the present invention further provides a computer-readable storage medium storing a computer program, which is read and executed by a processor to implement an air conditioner exhaust fluctuation control method.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. An air conditioner exhaust fluctuation control method is characterized by comprising the following steps:
acquiring a target superheat degree, an upper limit value of exhaust temperature and current exhaust temperature;
when the current exhaust temperature is greater than the exhaust temperature upper limit value, controlling the air conditioner to enter a first control mode so as to reduce the exhaust temperature;
and when the first control mode exit condition is met, controlling the air conditioner to enter a third control mode so as to correct the target superheat degree.
2. The air conditioner exhaust air fluctuation control method according to claim 1, wherein the third control mode specifically includes:
re-acquiring the current exhaust temperature;
acquiring the difference value between the newly acquired current exhaust temperature and the exhaust temperature upper limit value;
and correcting the target superheat degree according to the difference value to obtain a target superheat degree correction value.
3. The air conditioner exhaust fluctuation control method according to claim 2, wherein the correcting the target superheat degree according to the difference value to obtain a target superheat degree correction value specifically comprises:
when the difference is larger than or equal to a first set value, the target superheat correction value is equal to the target superheat;
when the difference value is smaller than the first set value and larger than a second set value, the target superheat correction value is smaller than the target superheat by a first amplitude;
and when the difference is smaller than or equal to a second set value, the target superheat correction value is smaller than the target superheat by a second amplitude, and the second amplitude is larger than the first amplitude.
4. The air conditioner exhaust air fluctuation control method according to claim 1, characterized by further comprising the steps of:
and when the current exhaust temperature is less than or equal to the exhaust temperature upper limit value or after the air conditioner exits from the third control mode, controlling the air conditioner to enter a second control mode so as to realize the adjustment of the opening of the internal engine valve.
5. The air conditioner exhaust air fluctuation control method according to claim 4, characterized in that the second control mode specifically includes:
acquiring an actual superheat degree;
controlling the opening of the internal machine valve according to the actual superheat degree and the simulated target superheat degree; wherein the quasi-target superheat degree is the target superheat degree or the target superheat degree correction value.
6. The air conditioner exhaust air fluctuation control method according to claim 5, before controlling the internal valve opening degree execution switch-down, further comprising:
acquiring a superheat difference value between the actual superheat and the quasi-target superheat;
when the absolute value of the superheat degree difference value is larger than a third set value, controlling the internal valve to be closed according to a first step number;
when the absolute value of the superheat degree difference is smaller than or equal to the third set value and larger than a fourth set value, controlling the internal machine valve to be closed according to a second step number;
when the absolute value of the superheat degree difference value is smaller than or equal to the fourth set value, controlling the internal valve not to act; wherein the first number of steps is greater than the second number of steps.
7. The air conditioner exhaust air fluctuation control method according to claim 1, wherein the first control mode exit condition is a first condition or a second condition, wherein,
the first condition is: the current exhaust temperature is obtained again in one period until the current exhaust temperature is reduced to a preset target exhaust temperature;
the second condition is: and operating in the first control mode for a first preset time.
8. An air conditioner exhaust fluctuation control apparatus, characterized by comprising:
the device comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring the current exhaust temperature, the upper limit value of the exhaust temperature, the actual superheat degree and the target superheat degree;
the control unit is used for controlling the air conditioner to enter a first control mode according to the current exhaust temperature and the upper limit value of the exhaust temperature so as to reduce the exhaust temperature;
the control unit is further used for controlling the air conditioner to enter a third control mode after the first control mode exit condition is met so as to correct the target superheat degree.
9. An air conditioner comprising a computer-readable storage medium storing a computer program and a processor, the computer program being read and executed by the processor to implement the air conditioner exhaust air fluctuation control method according to any one of claims 1 to 7.
10. A computer-readable storage medium, characterized in that it stores a computer program which, when read and executed by a processor, implements the air conditioner exhaust air fluctuation control method according to any one of claims 1 to 7.
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| CN201911138347.1A CN110848903B (en) | 2019-11-20 | 2019-11-20 | Air conditioner exhaust fluctuation control method and device, air conditioner and storage medium |
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| CN201911138347.1A CN110848903B (en) | 2019-11-20 | 2019-11-20 | Air conditioner exhaust fluctuation control method and device, air conditioner and storage medium |
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| CN110848903A true CN110848903A (en) | 2020-02-28 |
| CN110848903B CN110848903B (en) | 2021-05-18 |
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| CN201911138347.1A Active CN110848903B (en) | 2019-11-20 | 2019-11-20 | Air conditioner exhaust fluctuation control method and device, air conditioner and storage medium |
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| CN111442504A (en) * | 2020-04-10 | 2020-07-24 | 广东美的制冷设备有限公司 | Operation method and device of air conditioner, air conditioner and readable storage medium |
| CN113028575A (en) * | 2021-04-22 | 2021-06-25 | 宁波奥克斯电气股份有限公司 | Target exhaust gas temperature correction method, target exhaust gas temperature correction device, electronic apparatus, and storage medium |
| CN113251596A (en) * | 2021-04-16 | 2021-08-13 | 青岛海尔空调器有限总公司 | Control method and device for air conditioner and air conditioner |
| CN113251607A (en) * | 2021-04-30 | 2021-08-13 | 广东Tcl智能暖通设备有限公司 | Air conditioner refrigeration control method and device, air conditioner and computer storage medium |
| CN114322249A (en) * | 2021-12-17 | 2022-04-12 | 宁波奥克斯电气股份有限公司 | Exhaust pressure adjusting method and device of air conditioner and air conditioner |
| CN117404827A (en) * | 2023-12-14 | 2024-01-16 | 珠海格力电器股份有限公司 | Heat pump system control method and device and heat pump system |
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| CN113028575A (en) * | 2021-04-22 | 2021-06-25 | 宁波奥克斯电气股份有限公司 | Target exhaust gas temperature correction method, target exhaust gas temperature correction device, electronic apparatus, and storage medium |
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| CN114322249A (en) * | 2021-12-17 | 2022-04-12 | 宁波奥克斯电气股份有限公司 | Exhaust pressure adjusting method and device of air conditioner and air conditioner |
| CN117404827A (en) * | 2023-12-14 | 2024-01-16 | 珠海格力电器股份有限公司 | Heat pump system control method and device and heat pump system |
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