CN113339964A - Air conditioner and control method thereof - Google Patents
Air conditioner and control method thereof Download PDFInfo
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- CN113339964A CN113339964A CN202110530265.2A CN202110530265A CN113339964A CN 113339964 A CN113339964 A CN 113339964A CN 202110530265 A CN202110530265 A CN 202110530265A CN 113339964 A CN113339964 A CN 113339964A
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- 238000000034 method Methods 0.000 title claims abstract description 61
- 238000001514 detection method Methods 0.000 claims abstract description 44
- 238000005057 refrigeration Methods 0.000 claims abstract description 29
- 230000002596 correlated effect Effects 0.000 claims description 7
- 238000004590 computer program Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000001816 cooling Methods 0.000 description 14
- 230000000875 corresponding effect Effects 0.000 description 7
- 239000003507 refrigerant Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
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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
- F24F11/67—Switching between heating and cooling modes
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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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- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention belongs to the technical field of air conditioners and aims to solve the problem that the normal use of the existing air conditioner is influenced by alarming and stopping after starting up the air conditioner during the refrigeration operation in winter. To this end, the present invention provides an air conditioner and a control method thereof, the control method of the air conditioner including: when the air conditioner enters a refrigeration mode, judging whether the current time is in winter according to the outdoor environment temperature; if the current time is winter, the exhaust detection time is increased; detecting exhaust information of the compressor within an exhaust detection period; selectively issuing an alarm and/or shutting down based on the exhaust information. Like this, can avoid in winter the refrigeration operation because of the circumstances emergence of microthermal influence production false alarm and shutdown operation, guarantee the normal operating refrigeration of air conditioner to can lead to the exhaust temperature accurately to send the circumstances emergence of reporting to the police and shutting down when can't reach preset temperature or the exhaust of compressor can't satisfy other conditions in setting for a long time in other circumstances, make the user in time discover the trouble and maintain it.
Description
Technical Field
The invention belongs to the technical field of air conditioners, and particularly provides an air conditioner and a control method thereof.
Background
With the continuous improvement of the living standard of people, the air conditioner becomes a necessary household appliance in the life of people. Generally, people cool by means of an air conditioner in summer to reduce the ambient temperature, thereby improving the comfort of the environment where the user is located. In the daily use process, the condition that the exhaust temperature of the compressor is low due to insufficient refrigerant in the refrigerant circulation loop can occur, and the refrigeration efficiency of the air conditioner is low or even the air conditioner cannot refrigerate. In order to avoid the situation that the air conditioner still performs refrigeration operation under the condition that the exhaust temperature of the compressor is low, so that the refrigeration efficiency is low or even the air conditioner cannot perform refrigeration, the existing air conditioner detects the exhaust temperature of the compressor after the set time of starting operation in the refrigeration operation process, and sends out an alarm and controls the air conditioner to stop when the exhaust temperature is lower than the preset temperature. Through the arrangement, a user can contact after-sales maintenance personnel to maintain the air conditioner when the air conditioner gives an alarm and stops working, so that the condition that the air conditioner still operates when the exhaust temperature of the compressor is low is avoided.
In winter, central heating is usually performed in northern areas. Wherein, in northeast, because outdoor ambient temperature is lower, the heat supply pipeline heat scatters and disappears great, in order to guarantee that all users' indoor temperature can both reach the heating temperature that requires, and the heat supply is great usually, and the most users indoor ambient temperature who is located the heat supply pipeline upper reaches can reach very high, and the user can feel uncomfortable indoor. Part user can select to open the window and avoid indoor high temperature, and it is lower to be close to window position temperature indoor like this, and the position temperature that is close to the heating installation fin is higher, and indoor ambient temperature is inhomogeneous, and indoor comfort is still lower. In order to improve the comfort level in the room, people choose to use an air conditioner to cool the room. However, after the compressor is started, the outdoor temperature is low, so that the exhaust temperature of the compressor cannot reach the preset temperature within the set time, an alarm is given out, the compressor is stopped, and the normal use of a user is influenced.
Therefore, there is a need in the art for a new solution to the above problems.
Disclosure of Invention
In order to solve the above problems in the prior art, that is, to solve the problem that the normal use of the conventional air conditioner is easily affected by an alarm and a shutdown after the air conditioner is started in the winter cooling operation, the present invention provides a control method of an air conditioner, the control method including: when the air conditioner enters a refrigeration mode, judging whether the current time is in winter according to the outdoor environment temperature; if the current time is winter, increasing the exhaust detection time; detecting exhaust information of a compressor within the exhaust detection period; selectively issuing an alarm and/or shutting down based on the exhaust information.
In a preferred embodiment of the above control method, the exhaust information includes an exhaust temperature, and the step of selectively issuing an alarm and/or stopping the engine according to the exhaust information includes: comparing the exhaust temperature with a preset temperature; and selectively giving an alarm and/or stopping the machine according to the comparison result.
In a preferred embodiment of the above control method, the step of "selectively issuing an alarm and/or stopping according to the comparison result" includes: and if the exhaust temperature is less than or equal to the preset temperature, giving an alarm and/or stopping the engine.
In a preferred embodiment of the above control method, the step of "selectively issuing an alarm and/or stopping according to the comparison result" includes: if the exhaust temperature is less than or equal to the preset temperature, acquiring the operating frequency and the current of the compressor; selectively issuing an alarm and/or shutting down based on the operating frequency and the current.
In a preferred embodiment of the above control method, the step of "selectively issuing an alarm and/or shutting down according to the operating frequency and the current" includes; determining a current range according to the operating frequency; judging whether the current is in the current range; and if the current is not in the current range, giving an alarm and/or stopping the machine.
In a preferred embodiment of the above control method, the control method further includes: determining the preset temperature according to the running frequency of the compressor; wherein the preset temperature is positively correlated with the operating frequency.
In a preferred embodiment of the above control method, the exhaust information includes an exhaust gas temperature change rate, and the step of selectively issuing an alarm and/or stopping the engine based on the exhaust information includes: comparing the exhaust temperature change rate with a preset change rate; and selectively giving an alarm and/or stopping the machine according to the comparison result.
In a preferred embodiment of the above control method, the step of "selectively issuing an alarm and/or stopping according to the comparison result" specifically includes: and if the exhaust temperature change rate is less than or equal to the preset change rate, giving an alarm and/or stopping the machine.
In a preferred embodiment of the above control method, the control method further includes: determining the preset change rate according to the running frequency of the compressor; wherein the predetermined rate of change is positively correlated with the operating frequency.
In the technical scheme of the invention, the control method of the air conditioner comprises the following steps: when the air conditioner enters a refrigeration mode, judging whether the current time is in winter according to the outdoor environment temperature; if the current time is winter, the exhaust detection time is increased; detecting exhaust information of the compressor within an exhaust detection period; selectively issuing an alarm and/or shutting down based on the exhaust information. That is, when the air conditioner enters the cooling mode, it is judged whether it is the winter season at present according to the outdoor ambient temperature, the discharge detection time period is increased in the case of the current winter season, the discharge information of the compressor is detected within the discharge detection time period, and an alarm and/or a stop is issued when the discharge information satisfies the corresponding conditions.
By the control method, the condition that the air conditioner generates false alarm and shutdown operation due to low temperature influence in the refrigeration operation in winter can be avoided, the normal operation refrigeration of the air conditioner in winter is ensured, and the condition that the air conditioner gives an alarm and/or shuts down or the exhaust of the compressor cannot meet other conditions and gives an alarm and shuts down when the exhaust temperature cannot reach the preset temperature within the set time period under other conditions can be accurately generated, so that a user can timely find the fault of the air conditioner and maintain the fault.
In another aspect, the present invention also provides an air conditioner, including: a memory; a processor; and a computer program stored in the memory and configured to be executed by the processor to implement the control method of the air conditioner in the above-described technical solution.
It should be noted that the air conditioner has all the technical effects of the above control method, and details are not described herein.
Drawings
Preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:
FIG. 1 is a diagram of main steps of a control method of an air conditioner according to the present invention;
fig. 2 is a flowchart of a control method of an air conditioner according to a first embodiment of the present invention;
fig. 3 is a flowchart of a control method of an air conditioner according to a second embodiment of the present invention;
fig. 4 is a flowchart of a control method of an air conditioner according to a third embodiment of the present invention.
Detailed Description
First, it should be understood by those skilled in the art that the embodiments described below are merely for explaining technical principles of the present invention, and are not intended to limit the scope of the present invention. For example, the control method of the air conditioner of the present invention is suitable for an integrated air conditioner, a split air conditioner, a single-cooling air conditioner, a dual-purpose air conditioner, and the like. Such adjustments to the specific type of application object should not be construed as limiting the invention, but should be within the scope of the invention.
It should be noted that the terms "first", "second" and "third" in the description of the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the term "connected" is to be interpreted broadly, e.g., as a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through the communication between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1, a control method of an air conditioner according to the present invention will be described. Fig. 1 is a main step diagram of a control method of an air conditioner according to the present invention.
Based on the problem that the normal use of the existing air conditioner is easily influenced by alarming and stopping after starting up when the air conditioner operates in winter refrigeration, the invention provides a control method of the air conditioner.
As shown in fig. 1, the control method of the air conditioner of the present invention mainly comprises the following steps:
and S100, judging whether the current time is in winter according to the outdoor environment temperature when the air conditioner enters the refrigeration mode.
An outdoor portion of the air conditioner is provided with an outdoor temperature sensor that detects an outdoor ambient temperature. When the air conditioner enters a refrigeration mode according to an instruction of a user, the controller acquires the outdoor environment temperature through the outdoor temperature sensor, compares the outdoor environment temperature with a first preset temperature (such as 0 ℃ and the like), and judges that the winter season is present when the outdoor environment temperature is lower than the first preset temperature. It should be noted that the setting of the first preset temperature to 0 ℃ is only a specific setting manner, and those skilled in the art can make adjustments, for example, the first preset temperature may be 2 ℃, -1 ℃, or other suitable temperature values.
And step S200, if the current time is in winter, increasing the exhaust detection time.
For example, the exhaust gas detection period is set to 2 minutes in a normal case, and to 30 minutes if it is the winter season at present. It should be noted that setting the exhaust gas detection period to 2 minutes in general and setting the exhaust gas detection period to 30 minutes in determining that the current time is the winter season is only a specific setting, and those skilled in the art can make adjustments according to actual situations, for example, setting the exhaust gas detection period to 1.5 minutes, 2.5 minutes, 3 minutes or other suitable periods in general, setting the exhaust gas detection period to 25 minutes, 28 minutes, 32 minutes or other suitable periods in determining that the current time is the winter season, and the like.
And step S300, detecting the exhaust information of the compressor in the exhaust detection time period.
And step S400, selectively giving an alarm and/or stopping the engine according to the exhaust information.
And if the exhaust information meets the corresponding alarm and/or shutdown conditions, giving an alarm and/or shutting down the vehicle.
By the control method, the condition that the air conditioner generates false alarm and shutdown operation due to low temperature influence in the refrigeration operation in winter can be avoided, the normal operation refrigeration of the air conditioner in winter is ensured, and the condition that the air conditioner gives an alarm and/or shuts down or the exhaust of the compressor cannot meet other conditions and gives an alarm and shuts down when the exhaust temperature cannot reach the preset temperature within the set time period under other conditions can be accurately generated, so that a user can timely find the fault of the air conditioner and maintain the fault.
It should be noted that an indicator light, a buzzer or other suitable alarm prompting device may be disposed on the air conditioner, and the alarm prompting device is used to send an alarm prompt to the user in the form of an optical signal or an acoustic signal.
A control method of an air conditioner according to a first embodiment of the present invention will be described with reference to fig. 2. Fig. 2 is a flowchart of a control method of an air conditioner according to a first embodiment of the present invention.
As shown in fig. 2, in a first embodiment of the present invention, a control method of an air conditioner includes:
and step S110, the air conditioner enters a cooling mode.
And when the controller receives a refrigeration instruction of a user, the controller controls the air conditioner to operate a refrigeration mode according to the corresponding refrigeration power according to the outdoor environment temperature detected by the outdoor temperature sensor, the indoor temperature detected by the indoor temperature sensor and the set temperature of the user.
Step S120, determining whether the outdoor ambient temperature is less than or equal to a first preset temperature, if so, performing step S200, otherwise, performing step S310.
For example, the first predetermined temperature is 0 ℃, if the outdoor ambient temperature is less than or equal to 0 ℃, step S200 is executed, and if the outdoor ambient temperature is greater than 0 ℃, step S310 is executed.
And S200, increasing the exhaust detection time in winter.
The exhaust gas detection period is set to 2 minutes as is the usual case, and is set to 30 minutes if it is the winter season at present.
And S310, detecting the exhaust temperature of the compressor in the exhaust detection time period.
If it is winter, detect the exhaust temperature when the compressor runs for 30 minutes after starting up, if it is not winter, detect the exhaust temperature when the compressor runs for 2 minutes after starting up.
Step S410, determining whether the exhaust temperature is less than or equal to a second predetermined temperature, if so, performing step S420, otherwise, performing step S430.
For example, the second predetermined temperature is 20 deg.c. If the detected exhaust temperature is less than or equal to 20 ℃, step S420 is executed, and if the detected exhaust temperature is greater than 20 ℃, step S430 is executed.
And step S420, giving an alarm and stopping the machine.
And step S430, normal cooling operation.
That is, after the air conditioner enters the cooling mode, it is first determined whether the current time is in winter, if the current time is in winter, the exhaust detection time period is increased, and if the current time is not in winter, the exhaust detection time period is not increased. And detecting the exhaust temperature of the compressor when the compressor operates for the exhaust detection time after starting, giving an alarm and stopping if the exhaust temperature of the compressor is less than or equal to a second preset temperature, and normally refrigerating if the exhaust temperature of the compressor is greater than the second preset temperature.
Through the arrangement, according to whether the current time is in winter, the exhaust detection time is prolonged in winter, the exhaust information is detected in the exhaust detection time, the alarm and/or the shutdown are/is selectively sent out according to the exhaust information, no matter the refrigeration mode is operated in winter or in summer, the alarm and/or the shutdown can be selectively sent out according to the detected exhaust temperature after the compressor is operated for the set time after the compressor is started, therefore, the condition that the refrigeration effect is poor due to the fact that the air conditioner is operated under the condition that the exhaust temperature is low due to insufficient refrigerant is avoided, and the condition that the normal use is caused due to the fact that the false alarm shutdown is caused by the fact that the exhaust temperature cannot reach the set temperature within the set time when the air conditioner is operated in winter due to the fact that the low temperature is avoided.
A control method of an air conditioner according to a second embodiment of the present invention will be described with reference to fig. 3. Fig. 3 is a flowchart illustrating a control method of an air conditioner according to a second embodiment of the present invention.
As shown in fig. 3, in a second embodiment of the present invention, a control method of an air conditioner includes:
and step S110, the air conditioner enters a cooling mode.
Step S120, determining whether the outdoor ambient temperature is less than or equal to a first preset temperature, if so, performing step S200, otherwise, performing step S310.
And S200, increasing the exhaust detection time in winter.
And S310, detecting the exhaust temperature of the compressor in the exhaust detection time period.
Step S410, determining whether the exhaust temperature is less than or equal to a second predetermined temperature, if so, performing step S420, otherwise, performing step S440.
And step S420, acquiring the running frequency and current of the compressor.
For example, the controller may acquire the operating frequency of the compressor by using a detection element on the compressor, or may directly use the operating frequency determined according to the current working condition after starting up as the operating frequency of the compressor. If the compressor is started, the controller obtains a set temperature according to a received user instruction, obtains an indoor environment temperature through the indoor temperature sensor, and determines the running frequency of the compressor according to the difference value of the indoor environment temperature and the set temperature. Of course, the outdoor environment temperature can be obtained through the outdoor environment temperature, and the running frequency of the compressor can be determined according to the indoor environment temperature, the set temperature and the outdoor environment temperature. It should be noted that the method for determining the operating frequency of the compressor is the prior art, and will not be described herein. The current can be detected and obtained by a current sensor.
And step S431, determining a current range according to the operation frequency.
For example, a plurality of operating frequency ranges and a plurality of current ranges corresponding to the operating frequency ranges are stored in a memory of the controller, and the current range corresponding to the operating frequency is determined according to the operating frequency range in which the operating frequency falls. The larger the operating frequency of the compressor is, the larger the operating current thereof is, and thus the current range is positively correlated with the operating frequency range. The specific frequency range and the corresponding current range may vary according to different specifications of the air conditioner, and are not described in detail herein. It should be noted that, a corresponding current value may also be calculated according to the operating frequency in a set calculation manner, and a left-right deviation is added to the current value to obtain a current range, where a specific calculation manner belongs to the prior art and is not described herein again.
And step S432, judging whether the detected current is out of the current range. If so, go to step S433, otherwise go to step S440.
And step S433, sending out an alarm and stopping the machine.
And step S440, normal cooling operation.
That is, after the air conditioner enters the cooling mode, it is first determined whether the current time is in winter, if the current time is in winter, the exhaust detection time period is increased, and if the current time is not in winter, the exhaust detection time period is not increased. Detecting the exhaust temperature of the compressor when the compressor operates for exhaust detection time after starting; if the exhaust temperature of the compressor is less than or equal to a second preset temperature, further acquiring the operating frequency and the current of the compressor, determining a current range according to the operating frequency, giving an alarm and stopping the machine if the acquired current is not within the determined current range, and performing normal refrigeration operation if the acquired current is within the determined current range; and if the exhaust temperature of the compressor is higher than the second preset temperature, the normal refrigeration operation is performed.
The method comprises the steps of increasing exhaust detection time when the air conditioner operates in a refrigerating mode in winter, detecting the exhaust temperature of the compressor when the compressor operates in the exhaust detection time after the air conditioner is started, further judging whether the current of the compressor is matched with the operating frequency of the compressor or not under the condition that the exhaust temperature is less than or equal to a second preset temperature, sending an alarm and stopping the air conditioner under the condition that the current of the compressor is not matched with the operating frequency of the compressor, more accurately judging whether the exhaust temperature caused by insufficient refrigerant is low or not, and more accurately giving an alarm.
Preferably, the control method of the air conditioner further includes: and determining a second preset temperature according to the running frequency of the compressor. Wherein the preset temperature is positively correlated with the operating frequency.
When the air conditioner is started, the air conditioner runs at different running frequencies, the exhaust temperature of the compressor rises at different speeds, and the higher the running frequency is, the higher the exhaust temperature rising speed of the compressor is. The second preset temperature is determined according to the running frequency of the compressor, so that the operation of giving an alarm and/or stopping the compressor can be matched with the actual situation, and the probability of false alarm is reduced.
A method for controlling an air conditioner according to a third embodiment of the present invention will be described with reference to fig. 4. Fig. 4 is a flowchart of a control method of an air conditioner according to a third embodiment of the present invention.
As shown in fig. 4, in a third embodiment of the present invention, a control method of an air conditioner includes:
and step S110, the air conditioner enters a cooling mode.
Step S120, determining whether the outdoor ambient temperature is less than or equal to a first preset temperature, if so, performing step S200, and if not, performing step S320.
And S200, increasing the exhaust detection time in winter.
Step S320 detects the exhaust gas temperature change rate of the compressor during the exhaust gas detection period.
For example, the variation amount of the exhaust temperature is detected in the exhaust detection period after the startup, and the variation amount of the exhaust temperature is divided by the exhaust detection period to obtain the exhaust temperature change rate.
Step S410, determining whether the exhaust temperature change rate is less than or equal to a preset change rate, if so, executing step S420, otherwise, executing step S430.
And step S420, giving an alarm and stopping the machine.
And step S430, normal cooling operation.
That is, after the air conditioner enters the cooling mode, it is first determined whether the current time is in winter, if the current time is in winter, the exhaust detection time period is increased, and if the current time is not in winter, the exhaust detection time period is not increased. And obtaining the exhaust temperature change rate of the compressor within the exhaust detection time length after starting up, giving an alarm and stopping if the exhaust temperature change rate of the compressor is less than or equal to a preset temperature change rate, and normally refrigerating if the exhaust temperature change rate of the compressor is greater than the preset temperature change rate.
By the control method, the exhaust detection time can be set to be shorter, whether an alarm is sent out and/or the air conditioner is shut down can be accurately judged, the detection time can be shortened, the operation time under the condition of abnormal exhaust temperature is shortened, and the influence on the service life of the air conditioner is reduced.
Preferably, the control method of the air conditioner further includes: the preset change rate is determined according to the operating frequency of the compressor. Wherein the predetermined rate of change is positively correlated with the operating frequency.
When the air conditioner is started, the air conditioner runs at different running frequencies, the exhaust temperature of the compressor rises at different speeds, and the higher the running frequency is, the higher the exhaust temperature rising speed of the compressor is. The preset change rate is determined according to the running frequency of the compressor, so that the operation of giving an alarm and/or stopping the compressor can be matched with the actual situation, and the probability of false alarm is reduced.
Although in the above embodiments, the alarm is issued and the machine is stopped when the condition is satisfied, in practical application, the machine may only issue the alarm when the condition is satisfied, or may only stop when the condition is satisfied.
In the above embodiment, detecting the discharge information of the compressor, specifically detecting the discharge temperature of the compressor or the change rate of the discharge temperature, is only a specific setting mode, and may be adjusted in practical application, for example, in another feasible real-time mode, detecting the discharge information of the compressor, specifically detecting the discharge pressure of the compressor, and further selectively giving an alarm and/or stopping the compressor according to the discharge pressure and the preset pressure, and giving an alarm and/or stopping the compressor if the discharge pressure is less than or equal to the preset pressure, and normally performing cooling operation if the discharge pressure is greater than the preset pressure; in another feasible real-time manner, the discharge pressure of the compressor is detected, an alarm and/or a shutdown is selectively issued according to the discharge pressure and the magnitude of the preset pressure, if the discharge pressure is less than or equal to the preset pressure, the operating frequency and the current of the compressor are acquired, and an alarm and/or a shutdown is selectively issued according to the operating frequency and the current, and specific control logic can refer to relevant parts of the above-mentioned embodiments.
In another aspect, the present invention also provides an air conditioner, including: the air conditioner control device comprises a memory, a processor and a computer program, wherein the computer program is stored in the memory and is configured to be executed by the processor to realize the control method of the air conditioner of any one embodiment. The memory and the processor are arranged on the controller. When it is required to be described, the air conditioner may be an integrated air conditioner, a split air conditioner, a single-cooling air conditioner, a dual-purpose air conditioner, or other suitable air conditioners.
It should be noted that the memory in the above embodiments includes, but is not limited to, a random access memory, a flash memory, a read only memory, a programmable read only memory, a volatile memory, a non-volatile memory, a serial memory, a parallel memory, or a register, and the like, and the processor includes, but is not limited to, a CPLD/FPGA, a DSP, an ARM processor, a MIPS processor, and the like.
As can be seen from the above description, in the technical solution of the present invention, a control method of an air conditioner includes: when the air conditioner enters a refrigeration mode, judging whether the current time is in winter according to the outdoor environment temperature; if the current time is winter, the exhaust detection time is increased; detecting exhaust information of the compressor within an exhaust detection period; selectively issuing an alarm and/or shutting down based on the exhaust information. By the control method, the condition that the air conditioner generates false alarm and shutdown operation due to low temperature influence in the refrigeration operation in winter can be avoided, the normal operation refrigeration of the air conditioner in winter is ensured, and the condition that the air conditioner gives an alarm and/or shuts down or the exhaust of the compressor cannot meet other conditions and gives an alarm and shuts down when the exhaust temperature cannot reach the preset temperature within the set time period under other conditions can be accurately generated, so that a user can timely find the fault of the air conditioner and maintain the fault.
Those skilled in the art will appreciate that although some embodiments described herein include some features included in other embodiments instead of others, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the claims of the present invention, any of the claimed embodiments may be used in any combination.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (10)
1. A control method of an air conditioner, characterized in that the control method comprises:
when the air conditioner enters a refrigeration mode, judging whether the current time is in winter according to the outdoor environment temperature;
if the current time is winter, the exhaust detection time is increased;
detecting exhaust information of a compressor within the exhaust detection period;
selectively issuing an alarm and/or shutting down based on the exhaust information.
2. The control method of claim 1, wherein the exhaust information includes an exhaust temperature, and the step of selectively issuing an alarm and/or a shutdown according to the exhaust information includes:
comparing the exhaust temperature with a preset temperature;
and selectively giving an alarm and/or stopping the machine according to the comparison result.
3. The control method according to claim 2, wherein the step of selectively issuing an alarm and/or a shutdown according to the comparison result comprises:
and if the exhaust temperature is less than or equal to the preset temperature, giving an alarm and/or stopping the engine.
4. The control method according to claim 2, wherein the step of selectively issuing an alarm and/or a shutdown according to the comparison result comprises:
if the exhaust temperature is less than or equal to the preset temperature, acquiring the operating frequency and the current of the compressor;
selectively issuing an alarm and/or shutting down based on the operating frequency and the current.
5. The control method according to claim 4, wherein the step of selectively issuing an alarm and/or a shutdown according to the operating frequency and the current comprises:
determining a current range according to the operating frequency;
judging whether the current is in the current range;
and if the current is not in the current range, giving an alarm and/or stopping the machine.
6. The control method according to claim 2, characterized by further comprising:
determining the preset temperature according to the running frequency of the compressor;
wherein the preset temperature is positively correlated with the operating frequency.
7. The control method according to claim 1, wherein the exhaust information includes an exhaust temperature change rate, and the step of selectively issuing an alarm and/or a stop according to the exhaust information includes:
comparing the exhaust temperature change rate with a preset change rate;
and selectively giving an alarm and/or stopping the machine according to the comparison result.
8. The control method according to claim 7, wherein the step of selectively issuing an alarm and/or a shutdown according to the comparison result specifically comprises:
and if the exhaust temperature change rate is less than or equal to the preset change rate, giving an alarm and/or stopping the machine.
9. The control method according to claim 8, characterized by further comprising:
determining the preset change rate according to the running frequency of the compressor;
wherein the predetermined rate of change is positively correlated with the operating frequency.
10. An air conditioner, comprising:
a memory;
a processor; and
a computer program stored in the memory and configured to be executed by the processor to implement the control method of the air conditioner of any one of claims 1 to 9.
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| CN114234416A (en) * | 2021-11-25 | 2022-03-25 | 青岛海尔空调器有限总公司 | Air conditioner and control method thereof |
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