CN113757919B - Compressor output control method and device of air conditioner and air conditioner - Google Patents
Compressor output control method and device of air conditioner and air conditioner Download PDFInfo
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- CN113757919B CN113757919B CN202110965426.0A CN202110965426A CN113757919B CN 113757919 B CN113757919 B CN 113757919B CN 202110965426 A CN202110965426 A CN 202110965426A CN 113757919 B CN113757919 B CN 113757919B
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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
- F24F11/62—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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- 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
- F24F2140/00—Control inputs relating to system states
- F24F2140/10—Pressure
- F24F2140/12—Heat-exchange fluid pressure
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
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- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides an air conditioner compressor output control method, a device and an air conditioner, wherein the method comprises the following steps: if the air conditioner operates in a heating mode, acquiring high-pressure saturation temperature and dew point temperature; the high-pressure saturation temperature is the saturation temperature corresponding to the high-pressure of the compressor; controlling the compressor to operate according to the relation between the high-pressure saturation temperature and the preset temperature range and the target dew point low pressure; the target dew point low pressure is a saturation pressure corresponding to the current dew point temperature. The invention takes the target dew point low pressure as a low pressure target and takes the preset temperature range as a high pressure target, and the target dew point low pressure and the preset temperature range are coupled and controlled, so that the defrosting times can be reduced on the premise of ensuring the heating effect, and the use comfort of a user is improved.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner and an output control method and device for a compressor of the air conditioner.
Background
Compared with other heating equipment, the air conditioning system has high energy efficiency and less investment in winter heating, is the main heating equipment in winter, and has the main problem of the current air conditioning system in winter defrosting.
Most of compressors used in an air conditioning system are inverter compressors, and in order to ensure rapid heating during heating, the output of the compressors usually takes high pressure as a control target, so that a rapid heating effect is more pursued, and the research on heating and defrosting is less. Heating and frosting are mutually contradictory under the partial defrosting working condition, the higher the heating output is, the higher the frosting speed is, and the defrosting operation leads to heating interruption, so that the use comfort of a user is insufficient.
Disclosure of Invention
The invention solves the problem that the existing air conditioner control scheme has contradiction between heating and defrosting operation, which causes insufficient use comfort of users.
In order to solve the above problems, the present invention provides a compressor output control method of an air conditioner, the method comprising: if the air conditioner operates in a heating mode, acquiring high-pressure saturation temperature and dew point temperature; the high-pressure saturation temperature is the saturation temperature corresponding to the high-pressure of the compressor; controlling the compressor to operate according to the relation between the high-pressure saturation temperature and a preset temperature range and the target dew point low pressure; and the target dew point low pressure is a saturation pressure corresponding to the current dew point temperature.
The embodiment of the invention takes the target dew point low pressure as a low pressure target and the preset temperature range as a high pressure target, and the target dew point low pressure and the preset temperature range are coupled and controlled, so that the defrosting times can be reduced on the premise of ensuring the heating effect, and the use comfort of a user is improved.
Optionally, the controlling the compressor to operate according to the relationship between the high-pressure saturation temperature and the preset temperature range and the target dew point low pressure includes: if the high-pressure saturation temperature is smaller than a first temperature threshold, controlling the high-pressure saturation temperature to operate by taking the first temperature threshold as a target; if the high-pressure saturation temperature is larger than the second temperature threshold, controlling the high-pressure saturation temperature to operate by taking the second temperature threshold as a target; and if the high-pressure saturation temperature is greater than or equal to the first temperature threshold and less than or equal to a second temperature threshold, controlling the low-pressure to operate by taking the target dew point low pressure as a target.
The embodiment of the invention provides a specific coupling control mode of a low-voltage target and a high-voltage target, and reduces the defrosting times on the premise of ensuring the heating effect, thereby improving the use comfort of users.
Optionally, the controlling the low pressure to operate with a target dew point low pressure as a target comprises: if the low-pressure is larger than the target dew point low pressure, controlling the compressor to increase the frequency; and if the low-pressure is less than the target dew point low pressure, controlling the compressor to reduce the frequency.
The embodiment of the invention provides a specific low-pressure target control mode, which can reduce frosting and further reduce the defrosting times.
Optionally, the method further comprises: if the defrosting period is smaller than the shortest period threshold value, controlling the target value of the low-pressure to increase; the defrosting period is the time length between two defrosting actions; and if the defrosting period is greater than the longest period threshold value, controlling the target value of the low-pressure to be reduced.
The embodiment of the invention provides a defrosting cycle control process, which can avoid the problems of frequent defrosting and long-time non-defrosting.
Optionally, the method further comprises: acquiring outdoor environment temperature and outdoor environment humidity; and calculating the dew point temperature according to the outdoor environment temperature and the outdoor environment humidity, and converting the dew point temperature into corresponding saturation pressure.
The embodiment of the invention provides a calculation process of the target dew point low pressure, and can avoid condensation and frosting when the low pressure is higher than the target dew point low pressure.
Optionally, the first temperature threshold has a value range of 35 to 42 ℃, and the second temperature threshold has a value range of 45 to 52 ℃.
Optionally, the minimum period threshold value ranges from 60 min to 120min, and the maximum period threshold value ranges from 200 min to 300min.
The embodiment of the invention provides the value range of each parameter, can reduce the times of defrosting and improves the use comfort of users.
The present invention provides a compressor output control device of an air conditioner, the device includes: the acquisition module is used for acquiring high-pressure saturation temperature and dew point temperature if the air conditioner runs in a heating mode; the high-pressure saturation temperature is the saturation temperature corresponding to the high-pressure of the compressor; the control module is used for controlling the compressor to operate according to the relation between the high-pressure saturation temperature and a preset temperature range and the target dew point low pressure; and the target dew point low pressure is a saturation pressure corresponding to the current dew point temperature.
The invention provides an air conditioner, which comprises a computer readable storage medium and a processor, wherein a computer program is stored in the computer readable storage medium, and when the computer program is read and run by the processor, the air conditioner realizes the compressor output control method of the air conditioner.
The present invention provides a computer-readable storage medium storing a computer program which, when read and executed by a processor, implements the above-described compressor output control method of an air conditioner.
The compressor output control device of the air conditioner, the air conditioner and the computer readable storage medium of the invention can achieve the same technical effect as the compressor output control method of the air conditioner.
Drawings
Fig. 1 is a schematic flow chart illustrating a compressor output control method of an air conditioner according to an embodiment of the present invention;
fig. 2 is a schematic flow chart illustrating another method for controlling an output of a compressor of an air conditioner according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a compressor output control device of an air conditioner according to an embodiment of the present invention.
Description of the reference numerals:
301-an obtaining module; 302-control module.
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.
According to the heating operation control scheme of the existing air conditioner, a compressor takes high pressure or indoor unit pipe temperature as an output control target, a frosting scene is not considered, and defrosting is performed in winter as a main problem of an air conditioning system, so that the room temperature fluctuation is large and defrosting noise exists, and therefore the defrosting times are reduced, and the using comfort of the air conditioner can be effectively improved.
According to the embodiment of the invention, the outdoor air humidity is collected and the dew point temperature is calculated, so that the outdoor air humidity is used as the low-pressure control target, and the low-pressure target and the high-pressure target are used for coupling control, so that the defrosting times can be reduced on the premise of ensuring the heating effect, and the use comfort of a user is improved.
The air conditioning system comprises a variable-frequency compressor, a high-pressure sensor Pd for detecting high-pressure, a low-pressure sensor Ps for detecting low-pressure, an electronic expansion valve for adjusting flow, an outdoor environment temperature detection sensor (such as an outdoor environment temperature sensing bulb) and an outdoor environment humidity detection sensor. The high pressure sensor Pd is disposed at the compressor discharge pipe position and the low pressure sensor Ps is disposed at the compressor suction pipe position. In the air conditioning system without the high pressure sensor or the low pressure sensor, the high pressure and the low pressure can be estimated according to the corresponding pipe temperature.
Fig. 1 is a schematic flowchart of a compressor output control method of an air conditioner according to an embodiment of the present invention, the method including:
s102, if the air conditioner operates in a heating mode, acquiring high-pressure saturation temperature and dew point temperature.
The high-pressure saturation temperature is a saturation temperature corresponding to the high-pressure of the compressor, and correspondingly, the low-pressure saturation temperature is a saturation temperature corresponding to the low-pressure of the compressor.
Optionally, the high-pressure saturation temperature Pd-t is a saturation temperature corresponding to the high-pressure detection value, and the values are conversion values and are in one-to-one correspondence; the low-pressure saturation temperature Ps-t is the saturation temperature corresponding to the low-pressure detection value, and the values are conversion values and are in one-to-one correspondence.
And S104, controlling the compressor to operate according to the relation between the high-pressure saturation temperature and the preset temperature range and the target dew point low pressure.
The target dew point low pressure is a saturation pressure corresponding to the current dew point temperature. Specifically, the outdoor ambient temperature and the outdoor ambient humidity may be obtained, and then the dew point temperature may be calculated according to the outdoor ambient temperature and the outdoor ambient humidity, and the dew point temperature may be converted into the corresponding saturation pressure.
In the embodiment, a reasonable temperature range [ PD-1, PD-2 ] is set for the high-pressure saturation temperature in advance, the range is set according to the air supply temperature of the air conditioner, and the corresponding air supply temperature of the high-pressure saturation temperature in the range can not be overcooled or overheated when blown to a human body.
The embodiment is based on the coupling control of a low-pressure target and a high-pressure target, and if the high-pressure saturation temperature is higher than the preset temperature range, the high-pressure is controlled to be reduced so as to reduce the heating capacity of the air conditioner; if the high-pressure saturation temperature is lower than the preset temperature range, controlling the high-pressure to rise so as to improve the heating capacity of the air conditioner; and if the high-pressure saturation temperature is within the preset temperature range, controlling the low-pressure, and taking the target dew point low pressure as a control target so as to avoid frosting.
Optionally, if the high pressure saturation temperature is smaller than the first temperature threshold, the high pressure saturation temperature is controlled to operate with the first temperature threshold as a target. The first temperature threshold may employ the lower limit value PD-1 described above. When the pressure saturation temperature is less than the first temperature threshold value, it indicates that the pipe temperature is too low, and the indoor air-out temperature at this moment is too low, needs preferentially to heat, guarantees that the minimum pipe temperature is in the comfortable temperature range of the human body. Specifically, the high pressure can be controlled to operate with the first temperature threshold as a target until the high pressure saturation temperature is equal to the first temperature threshold.
Optionally, if the high-pressure saturation temperature is greater than the second temperature threshold, the high-pressure saturation temperature is controlled to operate with the second temperature threshold as a target. The second temperature threshold may adopt the above-described upper limit value PD-2. When the pressure saturation temperature is higher than the second temperature threshold, the pipe temperature is too high, the indoor air outlet temperature is too high at the moment, the comfort is affected, the heating output is higher, the frosting speed is higher, the heating output needs to be reduced, and the highest pipe temperature is ensured to be in the comfortable temperature range of a human body. Specifically, the high-pressure can be controlled, and the operation is performed with the second temperature threshold as a target until the high-pressure saturation temperature is equal to the second temperature threshold.
Optionally, if the high-pressure saturation temperature is greater than or equal to the first temperature threshold and less than or equal to the second temperature threshold, the low-pressure is controlled to operate with the target dew point low pressure as a target. Between the first temperature threshold and the second temperature threshold, the indoor air outlet temperature is more appropriate, and the low-pressure is used as the control basis to avoid frosting.
If the low-pressure is larger than the target dew point low pressure, controlling the compressor to increase the frequency; and if the low-pressure is less than the target dew point low pressure, controlling the compressor to reduce the frequency. When the low-pressure is higher than the target dew point low pressure, the condensation is not generated, and the frequency rise of the compressor can be controlled to improve the heating capacity of the air conditioner as much as possible so as to meet the user requirements; when the low-pressure is smaller than the target dew point low pressure, condensation and frosting can be shown, the compressor can be controlled to reduce the frequency, and the low-pressure can be increased, so that the condensation and frosting can be avoided.
The method provided by the embodiment takes the target dew point low pressure as a low pressure target and takes the preset temperature range as a high pressure target, and the target dew point low pressure and the preset temperature range are coupled and controlled, so that the defrosting times can be reduced on the premise of ensuring the heating effect, and the use comfort of a user is improved.
In view of reducing the defrosting times as much as possible, a control logic for a defrosting period is further arranged on the basis of the method, and based on the control logic, the method can further comprise the following steps: if the defrosting period is smaller than the shortest period threshold value, the target value of the low-pressure is controlled to be increased; and if the defrosting period is greater than the longest period threshold value, the target value of the low-pressure is reduced. The defrosting cycle is the time length between two defrosting actions.
In order to avoid frequent defrosting and misjudgment of entering defrosting, the shortest defrosting period T1 is usually set; in order to ensure the operation reliability, the long-time non-defrosting is avoided, and the condition that the actual defrosting is caused by the inspection error but the system cannot accurately judge is avoided, so that the longest defrosting period T2 is set. Comparing the actual defrosting period with the set defrosting target period (T1, T2), and when the actual period is less than T1, the current low pressure is too low, and the frosting is frequently carried out, so that the target low pressure is increased by one in the next defrosting period; on the contrary, when the actual period is greater than T2, the control system does not frost at present, and at the moment, the control is mainly focused on the heating effect, so that the target low pressure is reduced by one in the next defrosting period.
Optionally, the first temperature threshold has a value range of 35 to 42 ℃, and the second temperature threshold has a value range of 45 to 52 ℃.
Optionally, the minimum period threshold value ranges from 60 min to 120min, and the maximum period threshold value ranges from 200 min to 300min.
Referring to fig. 2, a schematic flow chart of a compressor output control method of an air conditioner includes the steps of:
s201, after receiving a heating starting command, the compressor is normally started according to a normal starting program.
S202, initializing the target high-pressure saturation temperature to be (PD-1 + PD-2)/2.
After the start is finished, the control is carried out in the transition stage in the first 10 minutes, because the system parameters of the process are not stable, the intermediate value of the range of the target high-pressure saturation temperature Pd-t is taken as the initial target, namely (PD-1 + PD-2)/2, and the control is switched to the normal control after ten minutes.
S203, detecting the outdoor environment temperature Tao and the outdoor environment humidity RH, calculating the dew point temperature Tl, and converting into the target dew point low pressure PS-l.
The dew point temperature Td is calculated as follows:
in the formula
a and b are respectively constant, a =17.27, b =237.7 ℃.
The temperature T and the dew point Td are given in degrees celsius, the relative humidity RH is given as a percentage and Ln represents the natural logarithm.
S204, judging whether the current high-pressure saturation temperature Pd-t is larger than or equal to PD-1. If yes, go to S205; if not, go to S206.
PD-1 represents the lowest pipe temperature (air outlet temperature) of the heating effect, and when the actual high pressure is lower than the value, the heating priority is adopted to ensure the lowest pipe temperature. If the current high pressure is lower than the PD-1, the compressor is controlled according to the target high pressure saturation temperature, and the target value is controlled according to the PD-1, so that the lowest air outlet temperature for heating is ensured.
And S205, controlling the output of the compressor according to the target high-pressure saturation temperature PD-1.
S206, the output of the compressor is controlled according to the target dew point low pressure PS-l.
When Ps-t is more than PS-l + a, the condensation is not generated, the frequency of the compressor is increased, and when Ps-t is less than PS-l + a, the condensation is generated, and the frequency of the compressor is reduced. a ranges from 2 to 6, for example 4.
S207, judging whether the current high-pressure saturation temperature Pd-t meets the condition that Pd-t is larger than PD-2. If yes, go to step S208; if not, the process continues to execute S204.
When the output of the compressor is controlled according to the target dew point low pressure PS-l and the actual high pressure saturation temperature Pd-t is detected to be larger than PD-2, the temperature of the pipe is overhigh at the moment, the temperature of the outlet air is overhigh, and the comfort is influenced, the output of the compressor is controlled according to the target high pressure saturation temperature PD-2.
And S208, controlling the output of the compressor according to the target high-pressure saturation temperature PD-2.
Further, a defrosting target period [ T1, T2 ] is set, when the actual defrosting period is less than T1, the target is lower at present and the target low pressure is +1 in the next defrosting period, and when the actual defrosting period is greater than T2, the target is higher at present and the target low pressure is +1 in the next defrosting period.
Optionally, the value range of Pd-1 is 35-42 ℃, for example, 40 ℃; the value range of Pd-2 is 45-52 ℃, such as 48 ℃; the value range of T1 is 60-120 min, such as 90min; the value range of T2 is 200-300 min, such as 240min.
The value range can be determined by the specific use condition of a user, the installation position of the sensor and the like, and the numerical values of different scenes are different, so that the selected range corresponds to the acceptable maximum bearing capacity under the conditions of not influencing comfort, reliability and the like.
Fig. 3 is a schematic structural diagram of a compressor output control device of an air conditioner according to an embodiment of the present invention, the device including:
an obtaining module 301, configured to obtain a high-pressure saturation temperature and a dew point temperature if the air conditioner operates in a heating mode; the high-pressure saturation temperature is the saturation temperature corresponding to the high-pressure of the compressor;
the control module 302 is configured to control operation of the compressor according to the relationship between the high-pressure saturation temperature and a preset temperature range and the target dew point low pressure; and the target dew point low pressure is a saturation pressure corresponding to the current dew point temperature.
The compressor output control device of the air conditioner provided by the embodiment takes the target dew point low pressure as a low pressure target and takes the preset temperature range as a high pressure target, and the two are coupled and controlled, so that the defrosting times can be reduced on the premise of ensuring the heating effect, and the use comfort of a user is improved.
Optionally, as an embodiment, the control module 302 is specifically configured to: if the high-pressure saturation temperature is smaller than a first temperature threshold, controlling the high-pressure saturation temperature to operate by taking the first temperature threshold as a target; if the high-pressure saturation temperature is larger than the second temperature threshold, controlling the high-pressure saturation temperature to operate by taking the second temperature threshold as a target; and if the high-pressure saturation temperature is greater than or equal to the first temperature threshold and less than or equal to the second temperature threshold, controlling the low-pressure to operate by taking the target dew point low pressure as a target.
Optionally, as an embodiment, the control module 302 is specifically configured to: if the low-pressure is larger than the target dew point low pressure, controlling the compressor to increase the frequency; and if the low-pressure is less than the target dew point low pressure, controlling the compressor to reduce the frequency.
Optionally, as an embodiment, the control module 302 is further configured to: if the defrosting period is smaller than the shortest period threshold value, controlling the target value of the low-pressure to increase; the defrosting period is the time length between two defrosting actions; and if the defrosting period is greater than the longest period threshold value, controlling the target value of the low-pressure to be reduced.
Optionally, as an embodiment, the obtaining module 301 is further configured to: acquiring outdoor environment temperature and outdoor environment humidity; and calculating the dew point temperature according to the outdoor environment temperature and the outdoor environment humidity, and converting the dew point temperature into corresponding saturation pressure.
Optionally, as an embodiment, a range of the first temperature threshold is 35 to 42 ℃, and a range of the second temperature threshold is 45 to 52 ℃.
Optionally, as an embodiment, a value range of the shortest cycle threshold is 60 to 120min, and a value range of the longest cycle threshold is 200 to 300min.
The embodiment of 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 compressor output control method of the air conditioner.
The embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored, and when the computer program is read and executed by a processor, the method provided in the foregoing embodiment is implemented, and the same technical effect can be achieved, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
Of course, those skilled in the art will understand that all or part of the processes in the methods of the above embodiments may be implemented by instructing the control device to perform operations through a computer, and the programs may be stored in a computer-readable storage medium, and when executed, the programs may include the processes of the above method embodiments, where the storage medium may be a memory, a magnetic disk, an optical disk, and the like.
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.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising one of 8230; \8230;" 8230; "does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The compressor output control device of the air conditioner and the air conditioner disclosed by the embodiment correspond to the compressor output control method of the air conditioner disclosed by the embodiment, so that the description is simple, and related points can be referred to the description of the method part.
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 (9)
1. A compressor output control method of an air conditioner, the method comprising:
if the air conditioner operates in a heating mode, acquiring high-pressure saturation temperature and dew point temperature; the high-pressure saturation temperature is the saturation temperature corresponding to the high-pressure of the compressor;
controlling the compressor to operate according to the relation between the high-pressure saturation temperature and a preset temperature range and the target dew point low pressure; the target dew point low pressure is a saturation pressure corresponding to the current dew point temperature;
according to the relation between the high-pressure saturation temperature and the preset temperature range and the target dew point low pressure, the operation of the compressor is controlled, and the method comprises the following steps:
if the high-pressure saturation temperature is smaller than a first temperature threshold, controlling the high-pressure saturation temperature to operate by taking the first temperature threshold as a target;
if the high-pressure saturation temperature is larger than a second temperature threshold, controlling the high-pressure saturation temperature to operate by taking the second temperature threshold as a target;
and if the high-pressure saturation temperature is greater than or equal to the first temperature threshold and less than or equal to the second temperature threshold, controlling the low-pressure to operate by taking the target dew point low pressure as a target.
2. The method of claim 1, wherein the controlling the low pressure to operate with a target dew point low pressure comprises:
if the low-pressure is larger than the target dew point low pressure, controlling the compressor to increase the frequency;
and if the low-pressure is less than the target dew point low pressure, controlling the compressor to reduce the frequency.
3. The method of claim 1, wherein the method further comprises:
if the defrosting period is smaller than the shortest period threshold value, controlling the target value of the low-pressure to increase; the defrosting period is the time length between two defrosting actions;
and if the defrosting period is greater than the longest period threshold value, controlling the target value of the low-pressure to be reduced.
4. The method of claim 1, wherein the method further comprises:
acquiring outdoor environment temperature and outdoor environment humidity;
and calculating dew point temperature according to the outdoor environment temperature and the outdoor environment humidity, and converting the dew point temperature into corresponding saturation pressure.
5. The method of any one of claims 1-4, wherein the first temperature threshold is in a range of 35-42 ℃ and the second temperature threshold is in a range of 45-52 ℃.
6. The method of claim 3, wherein the shortest period threshold has a value in a range of 60 to 120min, and the longest period threshold has a value in a range of 200 to 300min.
7. A compressor output control apparatus of an air conditioner, characterized in that the apparatus comprises:
the acquisition module is used for acquiring high-pressure saturation temperature and dew point temperature if the air conditioner operates in a heating mode; the high-pressure saturation temperature is the saturation temperature corresponding to the high-pressure of the compressor;
the control module is used for controlling the compressor to operate according to the relation between the high-pressure saturation temperature and a preset temperature range and the target dew point low pressure; the target dew point low pressure is a saturation pressure corresponding to the current dew point temperature;
the control module is specifically configured to:
if the high-pressure saturation temperature is smaller than a first temperature threshold, controlling the high-pressure saturation temperature to operate by taking the first temperature threshold as a target;
if the high-pressure saturation temperature is larger than a second temperature threshold, controlling the high-pressure saturation temperature to operate by taking the second temperature threshold as a target;
and if the high-pressure saturation temperature is greater than or equal to the first temperature threshold and less than or equal to the second temperature threshold, controlling the low-pressure to operate by taking the target dew point low pressure as a target.
8. 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 method of any one of claims 1-6.
9. A computer-readable storage medium, characterized in that it stores a computer program which, when read and executed by a processor, implements the method according to any one of claims 1-6.
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