WO2015058666A1 - 压缩机过载保护控制方法和装置 - Google Patents

压缩机过载保护控制方法和装置 Download PDF

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Publication number
WO2015058666A1
WO2015058666A1 PCT/CN2014/088976 CN2014088976W WO2015058666A1 WO 2015058666 A1 WO2015058666 A1 WO 2015058666A1 CN 2014088976 W CN2014088976 W CN 2014088976W WO 2015058666 A1 WO2015058666 A1 WO 2015058666A1
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WIPO (PCT)
Prior art keywords
time period
target time
compressor
tube temperature
temperature
Prior art date
Application number
PCT/CN2014/088976
Other languages
English (en)
French (fr)
Inventor
刘炜
梁勇超
李佩丽
玉鼎
高玉平
陈鹏宇
罗永宏
陈祖庆
彭启洋
王春
杨检群
Original Assignee
珠海格力电器股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 珠海格力电器股份有限公司 filed Critical 珠海格力电器股份有限公司
Priority to EP14855274.8A priority Critical patent/EP3073115B1/en
Priority to ES14855274T priority patent/ES2790575T3/es
Priority to US15/031,845 priority patent/US10228174B2/en
Publication of WO2015058666A1 publication Critical patent/WO2015058666A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F25B49/022—Compressor control arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/02—Stopping, starting, unloading or idling control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • F04B49/065—Control using electricity and making use of computers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/10—Other safety measures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B51/00—Testing machines, pumps, or pumping installations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B31/00—Compressor arrangements
    • F25B31/02—Compressor arrangements of motor-compressor units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2207/00—External parameters
    • F04B2207/70—Warnings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2500/00—Problems to be solved
    • F25B2500/06—Damage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2500/00—Problems to be solved
    • F25B2500/19—Calculation of parameters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/02—Compressor control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2117—Temperatures of an evaporator

Definitions

  • the present invention relates to the field of control, and in particular to a compressor overload protection control method and apparatus.
  • the refrigerant leakage protection function and the overload protection function are generally provided in the dehumidifier and the air conditioner.
  • the overload protection function is mainly realized by an overload protector.
  • the overload protector detects that the exhaust temperature of the dehumidifier and the air conditioner exceeds the exhaust gas temperature threshold, the compressor power switch of the dehumidifier and the air conditioner is disconnected, thereby implementing overload protection of the dehumidifier and the air conditioner.
  • the compressor power switch of the dehumidifier and the air conditioner has been disconnected, the compressor is still in a power-on state.
  • the dehumidifier and the air conditioner when the data parameter detected by the main controller satisfies the determination logic of the refrigerant leakage protection, the dehumidifier and the air conditioner generate a fluorine deficiency protection alarm and perform a fluorine deficiency protection action, in which case the dehumidifier and the air conditioner In fact, this overload protection is considered to be lack of fluorine protection, resulting in false alarms due to lack of fluoride protection.
  • the main object of the present invention is to provide a compressor overload protection control method and apparatus, which solves the problem of easily generating false alarms due to lack of fluorine protection in the related art.
  • a compressor overload protection control method includes: detecting a state of the compressor; determining whether the compressor is overload protected; and shielding the fluorine-deficient protection if the compressor exhibits overload protection.
  • the compressor overload protection control method is used for overload protection of the dehumidifier, the dehumidifier includes an evaporator and a compressor, wherein: detecting the state of the compressor includes: detecting a tube temperature of the evaporator in the first target period and second The ambient temperature and the tube temperature of the evaporator during the target time period, wherein the first target time period and the second target time period are adjacent time periods, and the second target time period is located after the first target time period, and the compressor is determined Whether the overload protection occurs includes: determining whether the pipe temperature continues to rise and reaches a maximum value during the first target time period; determining that the pipe temperature is at the first target time after determining that the pipe temperature continues to rise and reaches a maximum value within the first target time period Whether the temperature difference of the continuous rising section is greater than or equal to the preset temperature difference; determining the second target time period after determining that the temperature difference of the tube temperature continuously rising in the first target time period is greater than or equal to the preset temperature difference Internal environment temperature
  • detecting the tube temperature of the evaporator in the first target time period comprises: detecting the first tube temperature of the first time evaporator; detecting the second tube temperature of the second time evaporator; detecting the third time of the third time evaporator a tube temperature, wherein the first time, the second time, and the third time are any consecutive time points in the first target time period, and the second time is after the first time, and the third time is after the second time, the first Whether the tube temperature continuously rises and reaches a maximum value in a target time period includes: judging whether the tube temperature of the evaporator continuously rises and reaches the first target time period by judging the relationship between the first tube temperature and the second tube temperature and the third tube temperature Maximum value.
  • detecting the tube temperature of the evaporator in the second target time period comprises: detecting a fourth tube temperature of the evaporator at the fourth time; detecting a fifth tube temperature of the evaporator at the fifth time, wherein the fourth time and the fifth time For any continuous time point in the second target time period, and after the fifth time is located after the fourth time, determining whether the difference between the ambient temperature and the pipe temperature in the second target time period is less than a preset temperature difference limit value includes: The temperature difference between the five tubes and the fourth tube temperature; and determining whether the temperature difference is less than zero to determine whether the tube temperature continues to decrease during the second target period.
  • shielding the fluorine deficiency protection includes: acquiring a preset overload protection time period; removing the first target time period and the second target time period from the preset overload protection time period to determine a third target time period, wherein the third target The time period is adjacent to the second target time period, and the third target time period is located after the second target time period; and the fluorine deficiency protection is shielded during the third target time period.
  • shielding the fluorine deficiency protection further comprises: obtaining a fluorine deficiency protection shutdown command sent to the compressor, wherein the fluorine deficiency protection shutdown command includes the first fluorine deficiency protection shutdown Command, second fluorine deficiency protection stop command and third fluorine deficiency protection stop command; and detecting whether the moment of sending the third fluorine deficiency protection stop command is within the first target time period or within the second target time period, wherein, if it is detected that the moment of transmitting the third fluorine deficiency protection stop command is not within the first target time period or the second target time period, the fluorine deficiency protection is shielded.
  • a compressor overload protection control device comprises: a detecting unit for detecting the state of the compressor; a determining unit for determining whether the compressor has overload protection; and a shielding unit for shielding the fluorine-deficient protection if the compressor is overload protected.
  • the compressor overload protection control device is used for overload protection of the dehumidifier
  • the dehumidifier includes an evaporator and a compressor
  • the detecting unit is further configured to detect the tube temperature of the evaporator and the second target time in the first target time period The ambient temperature in the segment and the tube temperature of the evaporator, wherein the first target time period and the second target time period are adjacent time segments, and the second target time segment is located after the first target time period
  • the determining unit includes: a judgment The module is configured to determine whether the tube temperature continuously rises and reaches a maximum value during the first target time period; and the second determining module is configured to determine the tube temperature after determining that the tube temperature continues to rise and reaches a maximum value within the first target time period Whether the temperature difference that continues to rise during the first target time period is greater than or equal to the preset temperature difference; and the third determining module is configured to determine that the temperature difference of the tube temperature continues to rise during the first target time period is greater than or equal to the pre-
  • the detecting unit includes: a first detecting module, configured to detect a first tube temperature of the first time evaporator; a second detecting module, configured to detect a second tube temperature of the second time evaporator; and a third detecting module, a third tube temperature for detecting the third time evaporator; and wherein the first time, the second time and the third time are any consecutive time points within the first target time period, and the second time is after the first time After the second time is located at the second time, the first determining module is further configured to determine whether the temperature of the evaporator tube in the first target time period continues to rise by determining the relationship between the first tube temperature and the second tube temperature and the third tube temperature. Reaches the maximum value.
  • the detecting unit further includes: a fourth detecting module, configured to detect a fourth tube temperature of the fourth time evaporator; and a fifth detecting module, configured to detect a fifth tube temperature of the fifth time evaporator, wherein the fourth The time and the fifth time are any consecutive time points in the second target time period, and the fifth time is after the fourth time, the second determining module comprises: a calculating sub-module for calculating the fifth tube temperature and the fourth tube temperature a temperature difference; and a judging sub-module for determining whether the temperature difference is less than zero to determine whether the tube temperature continues to decrease during the second target period.
  • the shielding unit includes: a first acquiring module, configured to acquire a preset overload protection time period; and a second determining module, configured to remove the first target time segment and the second target time segment from the preset overload protection time period Determining a third target time period, wherein the third target time period is adjacent to the second target time period, and the third target time period is located after the second target time period; and a shielding module for masking the missing in the third target time period Fluorine protection.
  • the shielding unit further includes: a second acquiring module, configured to acquire a fluorine-deficient protection shutdown command sent to the compressor before shielding the fluorine-deficient protection in the third target time period, wherein the fluorine-deficient protection shutdown command includes the first The second fluorine deficiency protection shutdown command, the second fluorine deficiency protection shutdown command and the third fluorine deficiency protection shutdown command; and the sixth detection module for detecting whether the moment of transmitting the third fluorine deficiency protection shutdown command is at the first target In the time period or in the second target time period, wherein the shielding unit is further configured to: when it is detected that the moment of transmitting the third fluorine deficiency protection stop command is not within the first target time period or within the second target time period, Shielding is protected by fluorine.
  • a second acquiring module configured to acquire a fluorine-deficient protection shutdown command sent to the compressor before shielding the fluorine-deficient protection in the third target time period, wherein the flu
  • the state of detecting the compressor is used; determining whether the compressor has overload protection; and if the compressor is overloaded, shielding the fluorine-deficient protection, solving the problem that the fluorine-free protection false alarm is easily generated in the related art, thereby achieving The effect of preventing the false alarm of the fluorine deficiency protection when the compressor is overloaded is prevented.
  • FIG. 1 is a schematic view of a compressor overload protection control apparatus according to a first embodiment of the present invention
  • Figure 2 is a schematic view of a compressor overload protection control apparatus according to a second embodiment of the present invention.
  • FIG. 3 is a schematic diagram showing a curve of ambient temperature and evaporator tube temperature during compressor overload protection according to a second embodiment of the present invention
  • FIG. 4 is a flow chart of a compressor overload protection control method according to a first embodiment of the present invention.
  • Figure 5 is a flow chart of a compressor overload protection control method in accordance with a second embodiment of the present invention.
  • the compressor overload protection control method and apparatus of the present invention can be used for overload protection of a dehumidifier and an air conditioner, wherein the dehumidifier and the air conditioner each include a compressor and an evaporator.
  • a compressor overload protection control device for shielding against fluorine deficiency protection when an overload protection of a compressor occurs.
  • FIG. 1 is a schematic view of a compressor overload protection control apparatus according to a first embodiment of the present invention. As shown in FIG. 1, the apparatus includes a detecting unit 10, a judging unit 20, and a shielding unit 30.
  • the detecting unit 10 is for detecting the state of the compressor.
  • the state of the compressor can be a closed power state and a power off state. It should be noted that, in the embodiment of the present invention, when the compressor is in the power off state, the compressor is still in the power-on state. When the compressor is overloaded, the exhaust temperature of the compressor will be high, and once the exhaust temperature of the compressor is too high, the power of the compressor will be disconnected. At this time, the detecting unit 10 will detect the state of the compressor. In order to disconnect the power state, the detecting unit 10 will detect that the state of the compressor is the closed power state. Test list Element 10 can detect that the compressor is in a closed power state or is in a power state by detecting the tube temperature of the evaporator. It should be noted that the detecting unit 10 is a part of the main controller of the dehumidifier and the air conditioner.
  • the judging unit 20 is for judging whether the compressor has overload protection.
  • the determining unit 20 can determine that the compressor has overload protection; otherwise, when the detecting unit 10 detects the tube temperature of the evaporator
  • the judging unit 20 can judge that the compressor does not have the overload protection, that is, the compressor is in the normal working state.
  • the shielding unit 30 is used to shield the fluorine-deficient protection if the compressor is overload protected.
  • the shielding unit 30 is used for shielding the fluorine-deficient protection, otherwise the shielding unit 30 does not shield the fluorine-deficient protection, wherein the shielding unit 30 shields the fluorine-deficient protection by shielding the fluorine-deficient Protection control logic.
  • the detecting unit 10 detects that the exhaust gas temperature of the compressor is too high, it is determined that the compressor is in the power-off state.
  • the determining unit 20 determines that the compressor is overloaded.
  • the shielding unit 30 performs the shielding and fluorine-deficient protection action, thus achieving the effect of preventing the compressor from being false alarm of the fluorine deficiency protection during the overload protection.
  • FIG. 2 is a schematic diagram of a compressor overload protection control apparatus according to a second embodiment of the present invention.
  • This embodiment can be used as a preferred embodiment of the embodiment shown in FIG. 1.
  • the compressor overload protection control device of the embodiment includes the detecting unit 10, the determining unit 20 and the shielding unit 30 of the first embodiment, wherein the determining unit 20 includes The first determining module 201, the second determining module 202, the third determining module 203, and the first determining module 204.
  • the function of the shielding unit 30 is the same as that in the first embodiment, and details are not described herein again.
  • the detecting unit 10 is configured to detect a tube temperature of the evaporator in the first target time period and an ambient temperature in the second target time period and a tube temperature of the evaporator in the second target time period, wherein the first target time period and the second target The time period is an adjacent time period, and the second target time period is located after the first target time period.
  • the detecting unit 10 may include a first detecting module, a second detecting module, and a third detecting module.
  • the first detecting module is configured to detect the first tube temperature of the evaporator at the first moment
  • the second detecting module is configured to detect the second tube temperature of the evaporator at the second moment
  • the third detecting module is configured to detect the evaporator a third tube temperature at a third time, wherein the first time, the second time, and the third time may be any three consecutive time points within the first target time period, and the first time, the second time, and the third time Time is arranged in chronological order on the timeline.
  • the detecting unit 10 may further include a fourth detecting module and a fifth detecting module.
  • the fourth detecting module is configured to detect a fourth tube temperature of the evaporator at the fourth moment
  • the fifth detecting sub-module is configured to detect a fifth tube temperature of the evaporator at the fifth moment, wherein the fourth moment and the fifth moment The moment is any consecutive time point within the second target time period, and the fifth time instant is after the fourth time instant.
  • the first determining module 201 is configured to determine whether the tube temperature of the evaporator continuously rises and reaches a maximum value during the first target time period.
  • the duration of the first target time period may be preset.
  • the duration of the first target time period may be preset to 3 min.
  • the first determining module 201 determines the first The tube temperature of the evaporator is continuously increased during a target period.
  • the first determining module 201 determines the first The tube temperature continues to rise during the target time period and reaches a maximum at the critical state. It should be noted that, in the critical state, the second tube temperature corresponding to the second time is the maximum temperature in the first target time period.
  • the second judging module 202 is configured to determine, after the first judging module 201 determines that the tube temperature of the evaporator continuously rises and reaches a maximum value in the first target time period, determine that the tube temperature of the evaporator continues to rise in the first target period Whether the difference is greater than or equal to the preset temperature difference, for example, the preset temperature difference may be 15 °C.
  • the second determining module 202 may include a computing submodule and a determining submodule.
  • the fourth detecting module detects the fourth tube temperature
  • the fifth detecting module detects the fifth tube temperature
  • the calculating sub-module is used to calculate the temperature difference between the fifth tube temperature and the fourth tube temperature, in the second target time period.
  • the fourth tube temperature is greater than the fifth tube temperature, that is, when the temperature difference is less than zero, and the two tube temperature values are continuous values
  • the sub-module determines that the evaporator tube is in the second target time period. Temperature is continuing to decline.
  • the third determining module 203 is configured to determine the second target time period when the second determining module 202 determines that the temperature difference between the tube temperature of the evaporator and the first target time period is greater than or equal to the preset temperature difference. Whether the difference between the internal ambient temperature and the tube temperature of the evaporator is less than a preset temperature difference limit value, for example, the preset temperature difference limit value may be 5 °C.
  • the first determining module 204 is configured to determine, after the third determining module 203 determines that the difference between the ambient temperature and the tube temperature of the evaporator is less than the preset temperature difference limit value in the second target time period.
  • the compressor is overload protected, that is, the judging unit 20 is for judging that the compressor is in the power off state at this time.
  • the shielding unit 30 may include a first acquiring module, a second determining module, and a shielding module.
  • the first acquiring module is configured to acquire a preset overload protection time period.
  • the preset overload protection time period may be set to 60 minutes.
  • the second determining module is configured to remove the first target time period and the second target time period from the preset overload protection period to determine the third target time period, where The first target time period, the second target time period, and the third target time period are consecutive time periods, and the third target time period is located after the second target time period.
  • the shielding module is configured to shield the fluorine deficiency protection during the third target time period, and further, the shielding module is further configured to shield the fluorine deficiency protection during the extended period of the third target time period.
  • the preset overload protection period is 60 min
  • the durations of the first target period and the second target period are 3 min and 5 min, respectively
  • the third target period is 52 min after an hour, so that the shielding module can It is used to shield the fluorine deficiency protection within the last 52 minutes of the certain hour or to shield the fluorine deficiency protection within the first 52 minutes of the certain hour and the first 10 minutes of the next hour.
  • the shielding unit 30 may include a second acquiring module, a sixth detecting module, and a shielding unit.
  • the second obtaining module is configured to obtain a fluorine-deficient protection shutdown command sent to the compressor, wherein the fluorine-deficient protection shutdown command includes a first fluorine-deficient protection shutdown command, a second fluorine-deficient protection shutdown command, and a third fluorine-deficient protection Stop command.
  • the main controller sends a first fluorine deficiency protection stop command to the compressor
  • the main controller sends the compressor to the compressor.
  • the main controller sends a third fluorine deficiency protection stop command to the compressor.
  • the sixth detecting module is configured to detect whether the time for transmitting the third fluorine deficiency protection stop command is within the first target time period or within the second target time period.
  • the shielding unit is configured to shield the fluorine-deficient protection when the sixth detecting module detects the sending of the third fluorine-deficient protection stop command within the first target time period or after the second target time period, otherwise the fluorine-deficient protection is not shielded. .
  • the shielding unit does not shield the fluorine deficiency protection, and at this time, the fluorine deficiency protection is determined as The normal lack of fluoride protection, the implementation of the fluorine deficiency protection alarm.
  • the horizontal axis represents the time axis
  • the unit is min
  • the vertical axis represents the temperature axis
  • the unit is °C
  • the dotted line represents the ambient temperature
  • the broken line represents the tube temperature of the evaporator
  • the ambient temperature is assumed to be 25 ° C
  • the environment is relatively The humidity is 80%
  • the length of the first target time period is up to 3 minutes
  • the time length of the second target time period is up to 5 minutes
  • the preset temperature difference is 15 °C
  • the preset temperature difference limit is 5 °C.
  • the tube temperature of the evaporator rises from about 7 ° C to 14 ° C in about 0 to 10.5 min before point A, and the tube temperature rises slowly, and about 10.5 between point A and point B is Within 12.5 min, the detecting unit 10 detected that the tube temperature of the evaporator was continuously raised from 14 ° C to 29 ° C, and at the point B detecting unit 10 detected that the tube temperature of the evaporator reached a maximum value of 29 ° C.
  • the duration of the time period between point A and point B is about 2 minutes, that is, the time period between the point A and point B may be the first target time period.
  • the first determining module 201 determines that the tube temperature of the evaporator continues to rise and reaches a maximum value of 29 ° C.
  • the second judging module 202 judges that the temperature difference of the evaporator tube temperature in the period between the A point and the B point is 15 ° C, and the temperature difference 15 ° C is equal to the preset temperature difference 15 ° C.
  • the detecting unit 10 detects that the tube temperature of the evaporator is between 26 ° C and 29 ° C, and simultaneously detects that the ambient temperature is 25 ° C, thus, in B Between 12.5 and 14.5 min between point and point C, ambient temperature and The maximum difference of the tube temperature of the evaporator is 4 ° C, and the minimum value is 1 ° C. Therefore, the third determining module 203 determines that the maximum value of the difference between the ambient temperature and the tube temperature of the evaporator is 4 ° C is less than the preset.
  • the temperature difference limit is 5 °C.
  • the first determining module 204 of the judging unit 20 determines that the compressor is in the overload protection state, that is, the compressor has been stopped due to the overload protection.
  • the shielding unit 30 shields the fluorine-deficient protection from the time corresponding to 14.5 minutes of the C point. Assuming that the predetermined overload protection time of the compressor is 60 min, the above-mentioned shielding fluorine deficiency protection can be continued from 14.5 min to 60 min or 70 min. The shielded fluorine-deficient protection is released after 60 min or 70 min.
  • the embodiment of the present invention it is determined that the tube temperature of the evaporator continuously rises and reaches a maximum value during the first target time period, and it is determined that the temperature difference of the tube temperature of the evaporator continuously rises during the first target period is greater than or Equal to the preset temperature difference and judging that the difference between the ambient temperature and the tube temperature of the evaporator in the second target period is less than the preset temperature difference limit value, shielding the fluorine deficiency protection in time, eliminating the false alarm of the fluorine deficiency protection, and further The effect of preventing the compressor from false alarm of lack of fluorine protection during overload protection is achieved.
  • a compressor overload protection control method for shielding against fluorine deficiency protection when an overload protection of a compressor occurs.
  • the compressor overload protection control method provided by the embodiments of the present invention may be performed on a computer device.
  • the compressor overload protection control method provided by the embodiment of the present invention can be performed by the compressor overload protection control device according to the embodiment of the present invention, and the compressor overload protection controller device of the embodiment of the present invention can also be used for The compressor overload protection control method of the embodiment of the present invention is executed.
  • the compressor overload protection control method includes the following steps S101 to S103:
  • step S101 the state of the compressor is detected.
  • Detecting the state of the compressor can detect whether the state of the compressor is a closed power state or a power off state. It should be noted that, in the embodiment of the present invention, when the compressor is in the power off state, the compressor is still in the power-on state. When the compressor is overloaded, the exhaust temperature of the compressor will be high, and once the exhaust temperature of the compressor is too high, the power supply of the compressor will be disconnected. At this time, the compressor will be detected and the compressor will be detected. The state of the power is off, otherwise the state of the compressor is detected as the closed power state. Detecting the state of the compressor can detect whether the compressor is in a closed power state or a power off state by detecting the tube temperature of the evaporator. It should be noted that step S101 is performed by the main controller of the dehumidifier and the air conditioner.
  • step S102 it is determined whether the compressor has overload protection.
  • step S101 is performed.
  • step S103 is performed.
  • step S103 the fluorine deficiency protection is shielded.
  • the shielding is protected by fluorine deficiency. Otherwise, the fluorine deficiency protection is not shielded.
  • the shielding of the fluorine deficiency protection may be the control logic for shielding the fluorine deficiency protection.
  • Figure 5 is a flow chart of a compressor overload protection control method in accordance with a second embodiment of the present invention. As shown in FIG. 5, the method includes steps S201 to S206, which may be used as a preferred embodiment of the embodiment shown in FIG.
  • Step S201 detecting a tube temperature of the evaporator in the first target time period and an ambient temperature in the second target time period and a tube temperature of the evaporator.
  • the first target time period and the second target time period are adjacent time periods, and the second target time period is located after the first target time period.
  • the duration of the first target time period may be preset, and preferably, the duration of the first target time period may be preset to 3 min.
  • detecting the tube temperature of the evaporator in the first target time period comprises detecting the first tube temperature of the evaporator at the first moment, detecting the second tube temperature of the evaporator at the second moment, and detecting the evaporator at the third moment.
  • the tube temperature of the evaporator in the second target period includes detecting a fourth tube temperature of the evaporator at the fourth moment and detecting a fifth tube temperature of the evaporator at the fifth moment, wherein, The four moments and the fifth moment are any consecutive time points within the second target time period, and the fifth time instant is after the fourth time instant.
  • step S202 it is determined whether the tube temperature continues to rise and reaches a maximum value during the first target time period.
  • the first judgment is The module 201 determines that the tube temperature of the evaporator is continuously rising during the first target time period, and further, in the critical state, when the first tube is warm and the first When the temperature of the three tubes is less than the temperature of the second tube, it is judged that the tube temperature continues to rise in the first target period and reaches the maximum value in the critical state. It should be noted that, in the critical state, the second tube temperature corresponding to the second time is the maximum temperature in the first target time period. If it is determined that the tube temperature of the evaporator continues to rise and reaches the maximum value in the first target time period, step S203 is performed, and step S201 is performed.
  • Step S203 determining whether the temperature difference of the tube temperature of the evaporator continuously rising in the first target time period is greater than or equal to the preset temperature difference.
  • step S204 After determining that the tube temperature of the evaporator continues to rise and reaches a maximum value within the first target time period, it is determined whether the temperature difference of the evaporator tube temperature that continues to rise during the first target period is greater than or equal to the preset temperature difference. For example, when the preset temperature difference is 15 ° C, the difference between the tube temperature at the end time of the first target time period and the tube temperature at the start time of the first target time period is greater than 15 in the first target time period. At °C, it is judged that the temperature difference of the first target time period of the evaporator tube temperature is greater than the preset temperature difference, and the temperature difference of the first target time period of the evaporator tube temperature is determined to be greater than the pre-predetermined temperature difference. When the temperature difference is set, step S204 is performed, otherwise step S201 is performed.
  • step S202 and step S203 may be reversed.
  • Step S204 determining whether the difference between the ambient temperature and the tube temperature of the evaporator in the second target time period is less than a preset temperature difference limit value.
  • step S205 is performed, and step S201 is performed.
  • the temperature difference between the fifth tube temperature and the fourth tube temperature may be calculated.
  • the second target time period when the fifth pipe temperature is less than the fourth pipe temperature, that is, when the temperature difference is less than zero, and the two pipe temperature values are continuous values, the second target time period is determined.
  • the tube temperature of the evaporator is continuously decreasing. If it is determined that the difference between the ambient temperature and the tube temperature of the evaporator in the second target time period is less than the preset temperature difference limit value, and it is determined that the tube temperature of the evaporator is continuously decreased in the second target time period, performing the step S205. Otherwise, step S201 is performed.
  • step S205 it is determined that the compressor has overload protection.
  • step S206 is performed.
  • step S206 if the compressor is overload protected, the fluorine deficiency protection is shielded.
  • the preset overload protection time period may be set to 60 min; after the preset overload protection time period is acquired, the first target time period and the second are removed from the preset overload protection time period.
  • a target time period to determine a third target time period, wherein the first target time period, the second target time period, and the third target time period are consecutive time periods, and the third target time period is located after the second target time period; After the third target time period is obtained, the fluorine deficiency protection is shielded in the third target time period, or the fluorine deficiency protection is shielded in the third target time period and a certain period of time in which the extension is performed.
  • the preset overload protection period is set to 60 min
  • the durations of the first target period and the second target period are 3 min and 5 min, respectively
  • the third target period is 52 min after an hour, thus, Fluoride-deficient protection is masked within 52 minutes of the hour or during the first 52 minutes of the next hour and within the first 10 minutes of the next hour.
  • the fluorine deficiency protection shutdown command sent to the compressor is obtained, wherein the fluorine deficiency protection shutdown command includes the first fluorine deficiency protection shutdown Command, the second FC protection stop command and the third FC protection stop command.
  • the main controller sends a first fluorine deficiency protection stop command to the compressor, and when the second time detects the fluorine deficiency protection data, the main controller sends the compressor to the compressor. The second time the fluorine protection stop command is issued.
  • the main controller sends a third fluorine deficiency protection stop command to the compressor. Detecting whether the time at which the third fluorine deficiency protection shutdown command is sent is within the first target time period or within the second target time period. When it is detected that the third time of the fluorine deficiency protection stop command is sent within the first target time period or after the second target time period, the fluorine deficiency protection is shielded, otherwise the fluorine deficiency protection is not shielded.
  • the fluorine deficiency protection stop command When it is detected that the third time of the fluorine deficiency protection stop command is sent within the first target time period or after the second target time period, the fluorine deficiency protection is not shielded, and at this time, the fluorine deficiency protection is determined to be a normal fluorine deficiency protection, Perform a fluorine deficiency protection alarm.
  • the present invention determines that the tube temperature of the evaporator continues to rise and reaches a maximum value during the first target time period, and determines the temperature at which the tube temperature of the evaporator continues to rise during the first target period. If the difference is greater than or equal to the preset temperature difference and it is determined that the difference between the ambient temperature and the tube temperature of the evaporator in the second target period is less than the preset temperature difference limit, shielding the fluorine deficiency protection, eliminating the fluorine deficiency protection error The alarm, in turn, achieves the effect of preventing the compressor from false alarms due to the lack of fluorine protection during overload protection.
  • modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in a storage device by a computing device, or they may be fabricated into individual integrated circuit modules, or Multiple modules or steps are made into a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.

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Abstract

一种压缩机过载保护控制方法，包括：检测压缩机的状态（S101）；判断压缩机是否出现过载保护（S102）；以及如果压缩机出现过载保护，则屏蔽缺氟保护（S103）。一种压缩机过载保护控制装置，包括：检测单元（10），用于检测压缩机的状态；判断单元（20），用于判断压缩机是否出现过载保护；以及屏蔽单元（30），用于如果压缩机出现过载保护，则屏蔽缺氟保护。采用该方法和装置，解决了相关技术中容易产生缺氟误报警的问题，从而达到了防止压缩机在过载保护时出现缺氟保护误报警的效果。

Description

压缩机过载保护控制方法和装置 技术领域
本发明涉及控制领域，具体而言，涉及一种压缩机过载保护控制方法和装置。
背景技术
为了保证除湿机和空调器的安全运行，在相关技术中，一般会在除湿器和空调器中设置冷媒泄漏保护功能和过载保护功能。过载保护功能主要依靠过载保护器实现。
例如，当过载保护器检测到除湿机和空调器的排气温度超过排气温度阈值时，除湿机和空调器的压缩器电源开关就会断开，从而实现除湿机和空调器的过载保护，此时，虽然除湿机和空调器的压缩器电源开关已经断开，但是压缩器整机仍然处于得电状态。这样，当主控器检测到的数据参数满足冷媒泄漏保护的判定逻辑时，除湿机和空调器就会产生缺氟保护报警，并执行缺氟保护动作，在这种情况下，除湿机和空调器事实上误将这种过载保护认为缺氟保护，从而产生缺氟保护误报警。
针对相关技术中容易产生缺氟保护误报警的问题，目前尚未提出有效的解决方案。
发明内容
本发明的主要目的在于提供一种压缩机过载保护控制方法和装置，以解决相关技术中容易产生缺氟保护误报警的问题。
为了实现上述目的，根据本发明的一个方面，提供了一种压缩机过载保护控制方法。该方法包括：检测压缩机的状态；判断压缩机是否出现过载保护；以及如果压缩机出现过载保护，则屏蔽缺氟保护。
进一步地，压缩机过载保护控制方法用于除湿机的过载保护，除湿机包括蒸发器和压缩机，其中：检测压缩机的状态包括：检测第一目标时间段内蒸发器的管温以及第二目标时间段内环境温度和蒸发器的管温，其中，第一目标时间段和第二目标时间段是相邻的时间段，并且第二目标时间段位于第一目标时间段之后，判断压缩机是否出现过载保护包括：判断第一目标时间段内管温是否持续上升并达到最大值；在判断出第一目标时间段内管温持续上升并达到最大值之后，判断管温在第一目标时间段持续上升的温度差值是否大于或者等于预设温度差值；在判断出管温在第一目标时间段持续上升的温度差值大于或者等于预设温度差值之后，判断第二目标时间段内环境温 度和管温的差值是否小于预设温度差极限值；如果判断出第二目标时间段内环境温度和管温的差值小于预设温度差极限值，则确定压缩机出现过载保护。
进一步地，检测第一目标时间段内蒸发器的管温包括：检测第一时刻蒸发器的第一管温；检测第二时刻蒸发器的第二管温；检测第三时刻蒸发器的第三管温，其中，第一时刻，第二时刻和第三时刻为第一目标时间段内任意连续的时间点，并且第二时刻位于第一时刻之后，第三时刻位于第二时刻之后，判断第一目标时间段内管温是否持续上升并达到最大值包括：通过判断第一管温和第二管温和第三管温的大小关系判断第一目标时间段内蒸发器的管温是否持续上升并达到最大值。
进一步地，检测第二目标时间段内蒸发器的管温包括：检测第四时刻蒸发器的第四管温；检测第五时刻蒸发器的第五管温，其中，第四时刻和第五时刻为第二目标时间段内任意连续的时间点，并且第五时刻位于第四时刻之后，判断第二目标时间段内环境温度和管温的差值是否小于预设温度差极限值包括：计算第五管温和第四管温的温度差值；以及判断温度差值是否小于零以判断管温在第二目标时间段内是否持续下降。
进一步地，屏蔽缺氟保护包括：获取预设过载保护时间段；从预设过载保护时间段中除去第一目标时间段和第二目标时间段以确定第三目标时间段，其中，第三目标时间段与第二目标时间段相邻，并且第三目标时间段位于第二目标时间段之后；以及在第三目标时间段内屏蔽缺氟保护。
进一步地，在第三目标时间段内屏蔽缺氟保护之前，屏蔽缺氟保护还包括：获取发送给压缩机的缺氟保护停机命令，其中，缺氟保护停机命令包括第一次缺氟保护停机命令，第二次缺氟保护停机命令和第三次缺氟保护停机命令；以及检测发送第三次缺氟保护停机命令的时刻是否在第一目标时间段内或者在第二目标时间段内，其中，如果检测到发送第三次缺氟保护停机命令的时刻不在第一目标时间段内或者第二目标时间段内，则屏蔽缺氟保护。
为了实现上述目的，根据本发明的另一方面，提供了一种压缩机过载保护控制装置。该装置包括：检测单元，用于检测压缩机的状态；判断单元，用于判断压缩机是否出现过载保护；以及屏蔽单元，用于如果压缩机出现过载保护，则屏蔽缺氟保护。
进一步地，压缩机过载保护控制装置用于除湿机的过载保护，除湿机包括蒸发器和压缩机，其中：检测单元还用于检测第一目标时间段内蒸发器的管温以及第二目标时间段内环境温度和蒸发器的管温，其中，第一目标时间段和第二目标时间段是相邻的时间段，并且第二目标时间段位于第一目标时间段之后，判断单元包括：第一判断 模块，用于判断第一目标时间段内管温是否持续上升并达到最大值；第二判断模块，用于在判断出第一目标时间段内管温持续上升并达到最大值之后，判断管温在第一目标时间段持续上升的温度差值是否大于或者等于预设温度差值；第三判断模块，用于在判断出管温在第一目标时间段持续上升的温度差值大于或者等于预设温度差值之后，判断第二目标时间段内环境温度和管温的差值是否小于预设温度差极限值；第一确定模块，用于如果判断出第二目标时间段内环境温度和管温的差值小于预设温度差极限值，则确定压缩机出现过载保护。
进一步地，检测单元包括：第一检测模块，用于检测第一时刻蒸发器的第一管温；第二检测模块，用于检测第二时刻蒸发器的第二管温；第三检测模块，用于检测第三时刻蒸发器的第三管温；以及其中，第一时刻，第二时刻和第三时刻为第一目标时间段内任意连续的时间点，并且第二时刻位于第一时刻之后，第三时刻位于第二时刻之后，第一判断模块还用于通过判断第一管温和第二管温和第三管温的大小关系判断第一目标时间段内蒸发器的管温是否持续上升并达到最大值。
进一步地，检测单元还包括：第四检测模块，用于检测第四时刻蒸发器的第四管温；第五检测模块，用于检测第五时刻蒸发器的第五管温，其中，第四时刻和第五时刻为第二目标时间段内任意连续的时间点，并且第五时刻位于第四时刻之后，第二判断模块包括：计算子模块，用于计算第五管温和第四管温的温度差值；以及判断子模块，用于判断温度差值是否小于零以判断管温在第二目标时间段内是否持续下降。
进一步地，屏蔽单元包括：第一获取模块，用于获取预设过载保护时间段；第二确定模块，用于从预设过载保护时间段中除去第一目标时间段和第二目标时间段以确定第三目标时间段，其中，第三目标时间段与第二目标时间段相邻，并且第三目标时间段位于第二目标时间段之后；以及屏蔽模块，用于在第三目标时间段内屏蔽缺氟保护。
进一步地，屏蔽单元还包括：第二获取模块，用于在在第三目标时间段内屏蔽缺氟保护之前获取发送给压缩机的缺氟保护停机命令，其中，缺氟保护停机命令包括第一次缺氟保护停机命令，第二次缺氟保护停机命令和第三次缺氟保护停机命令；以及第六检测模块，用于检测发送第三次缺氟保护停机命令的时刻是否在第一目标时间段内或者在第二目标时间段内，其中，屏蔽单元还用于当检测到发送第三次缺氟保护停机命令的时刻不在第一目标时间段内或者在第二目标时间段内时，屏蔽缺氟保护。
通过本发明，采用检测压缩机的状态；判断压缩机是否出现过载保护；以及如果压缩机出现过载保护，则屏蔽缺氟保护，解决了相关技术中容易产生缺氟保护误报警的问题，进而达到了防止压缩机在过载保护时出现缺氟保护误报警的效果。
附图说明
构成本申请的一部分的附图用来提供对本发明的进一步理解，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：
图1是根据本发明第一实施例的压缩机过载保护控制装置的示意图；
图2是根据本发明第二实施例的压缩机过载保护控制装置的示意图；
图3是根据本发明第二实施例的压缩机过载保护时环境温度和蒸发器管温的曲线示意图；
图4是根据本发明第一实施例的压缩机过载保护控制方法的流程图；以及
图5是根据本发明第二实施例的压缩机过载保护控制方法的流程图。
具体实施方式
需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。下面将参考附图并结合实施例来详细说明本发明。
需要说明的是，本发明的压缩机过载保护控制方法和装置可以用于除湿机和空调器的过载保护，其中除湿机和空调器均包括压缩机和蒸发器。
根据本发明的实施例，提供了一种压缩机过载保护控制装置，用于在压缩机出现过载保护时屏蔽缺氟保护。
图1是根据本发明第一实施例的压缩机过载保护控制装置的示意图。如图1所示，该装置包括：检测单元10、判断单元20和屏蔽单元30。
检测单元10用于检测压缩机的状态。压缩机的状态可以为闭合电源状态和断开电源状态。需要说明的是，在本发明实施例中，压缩机处在断开电源状态时，该压缩机整机仍然为得电状态。当压缩机过载时，压缩机的排气温度会很高，而一旦压缩机的排气温度过高，压缩机的电源就会断开，这时，检测单元10就会检测到压缩机的状态为断开电源状态，否则检测单元10就会检测到压缩机的状态为闭合电源状态。检测单 元10可以通过检测蒸发器的管温来检测压缩机为闭合电源状态或者断开电源状态。需要说明的是，检测单元10为除湿机和空调器的主控制器的一部分。
判断单元20用于判断压缩机是否出现过载保护。当检测单元10通过检测蒸发器的管温检测到压缩机的状态为断开电源状态时，判断单元20可以判断出压缩机出现过载保护，否则，当检测单元10通过检测蒸发器的管温检测到压缩机的状态为闭合电源状态时，判断单元20可以判断出压缩机未出现过载保护，即压缩机处于正常的工作状态。
屏蔽单元30用于如果压缩机出现过载保护，则屏蔽缺氟保护。当判断单元20判断出压缩机出现过载保护时，屏蔽单元30用于屏蔽缺氟保护，否则屏蔽单元30不对缺氟保护进行屏蔽，其中，屏蔽单元30对缺氟保护进行屏蔽可以是屏蔽缺氟保护的控制逻辑。
通过本发明实施例，在检测单元10检测到压缩机的排气温度过高时确定压缩机处于断开电源状态，当压缩机处于断开电源状态时，判断单元20判断出压缩机出现过载保护，此时屏蔽单元30执行屏蔽缺氟保护动作，这样，达到了防止压缩机在过载保护时出现缺氟保护误报警的效果。
图2是根据本发明第二实施例的压缩机过载保护控制装置的示意图。该实施例可以作为图1所示实施例的优选实施方式，该实施例的压缩机过载保护控制装置包括第一实施例的检测单元10、判断单元20和屏蔽单元30，其中，判断单元20包括：第一判断模块201、第二判断模块202、第三判断模块203和第一确定模块204。
屏蔽单元30的作用与第一实施例中的相同，在此不再赘述。
检测单元10用于检测第一目标时间段内蒸发器的管温以及第二目标时间段内环境温度和第二目标时间段内蒸发器的管温，其中，第一目标时间段和第二目标时间段是相邻的时间段，并且第二目标时间段位于第一目标时间段之后。
本发明实施例中，检测单元10可以包括第一检测模块、第二检测模块和第三检测模块。具体地，第一检测模块用于检测蒸发器在第一时刻的第一管温，第二检测模块用于检测蒸发器在第二时刻的第二管温，第三检测模块用于检测蒸发器在第三时刻的第三管温，其中，第一时刻、第二时刻和第三时刻可以为第一目标时间段内的任意三个连续时间点，并且第一时刻、第二时刻和第三时刻按时间先后顺序排列在时间轴上。
检测单元10还可以包括第四检测模块和第五检测模块。具体地，第四检测模块用于检测蒸发器在第四时刻的第四管温，第五检测子模块用于检测蒸发器在第五时刻的第五管温，其中，第四时刻和第五时刻为第二目标时间段内任意连续的时间点，并且第五时刻位于第四时刻之后。
第一判断模块201用于判断第一目标时间段内蒸发器的管温是否持续上升并达到最大值。其中，第一目标时间段的时长可以预先设定，优选地，第一目标时间段的时长可以预先设定为3min。在第一目标时间段内，当第一管温、第二管温和第三管温依次为前者小于后者，并且该三个管温值为连续数值时，则第一判断模块201判断出第一目标时间段内蒸发器的管温是持续上升的，进一步地，在临界状态下，当第一管温和第三管温均小于第二管温时，则第一判断模块201判断出第一目标时间段内管温持续上升并且在临界状态下达到了最大值。需要说明的是，在临界状态，第二时刻对应的第二管温为第一目标时间段内的最大温度。
第二判断模块202用于在第一判断模块201判断出第一目标时间段内蒸发器的管温持续上升并达到最大值后，判断蒸发器的管温在第一目标时间段持续上升的温度差值是否大于或者等于预设温度差值，例如，预设温度差值可以为15℃。
在本发明实施例中，第二判断模块202可以包括计算子模块和判断子模块。当第四检测模块检测到第四管温，第五检测模块检测到第五管温后，计算子模块用于计算第五管温和第四管温的温度差值，在第二目标时间段内，当第四管温大于第五管温时，即当温度差值小于零时，并且该两个管温值为连续数值时，则判断子模块判断出第二目标时间段内蒸发器的管温是持续下降的。
第三判断模块203用于在第二判断模块202判断出蒸发器的管温在所述第一目标时间段持续上升的温度差值大于或者等于预设温度差值时，判断第二目标时间段内环境温度和蒸发器的管温的差值是否小于预设温度差极限值，例如，预设温度差极限值可以为5℃。
在本发明实施例中，第一确定模块204用于在第三判断模块203判断出第二目标时间段内环境温度和蒸发器的管温的差值小于预设温度差极限值后，判断出压缩机出现过载保护，即判断单元20用于判断出此时压缩机为断开电源状态。
在本发明实施例中，屏蔽单元30可以包括第一获取模块、第二确定模块和屏蔽模块。第一获取模块用于获取预设过载保护时间段，例如，预设过载保护时间段可以设定为60min。在获取模块获取到预设过载保护时间段后，第二确定模块用于从预设过载保护时间段中除去第一目标时间段和第二目标时间段以确定第三目标时间段，其中， 第一目标时间段、第二目标时间段和第三目标时间段为连续的时间段，并且第三目标时间段位于第二目标时间段之后。在得到第三目标时间段后，屏蔽模块用于在第三目标时间段内屏蔽缺氟保护，进一步地，屏蔽模块还用于在第三目标时间段向后延伸的时间段内屏蔽缺氟保护。例如，假设预设过载保护时间段为60min，第一目标时间段和第二目标时间段的时长分别为3min和5min，则第三目标时间段为某个小时的后52min，这样，屏蔽模块可以用于在该某个小时的后52min内屏蔽缺氟保护或者用于在该某个小时的后52min和下一小时的前10min内屏蔽缺氟保护。
在本发明实施例中，屏蔽单元30可以包括第二获取模块、第六检测模块和屏蔽单元。第二获取模块用于获取发送给压缩机的缺氟保护停机命令，其中，缺氟保护停机命令包括第一次缺氟保护停机命令，第二次缺氟保护停机命令和第三次缺氟保护停机命令。具体地，当第一次检测到缺氟保护数据时，主控制器向压缩机发送第一次缺氟保护停机命令，当第二次检测到缺氟保护数据时，主控制器向压缩机发送第二次缺氟保护停机命令，当第三次检测到缺氟保护数据时，主控制器向压缩机发送第三次缺氟保护停机命令。第六检测模块用于检测上述发送第三次缺氟保护停机命令的时刻是否在第一目标时间段内或者在第二目标时间段内。屏蔽单元用于当第六检测模块检测到发送第三次缺氟保护停机命令的时刻在第一目标时间段内或者在第二目标时间段内后，屏蔽缺氟保护，否则不屏蔽缺氟保护。当第六检测模块检测到发送第三次缺氟保护停机命令的时刻在第一目标时间段内或者在第二目标时间段内后，屏蔽单元不屏蔽缺氟保护，此时断定缺氟保护为正常的缺氟保护，执行缺氟保护报警。
例如，如图3所示，横轴表示时间轴，单位为min，纵轴表示温度轴，单位为℃，虚线表示环境温度，折线表示蒸发器的管温，假设环境温度为25℃，环境相对湿度为80％，第一目标时间段的时间长度最长为3min，第二目标时间段的时间长度最长为5min，预设温度差值为15℃，预设温度差极限值为5℃。在该实施例中，A点之前的约0到10.5min内蒸发器的管温大概从7℃上升到14℃，管温上升的速度较慢，而A点和B点之间的约10.5到12.5min内，检测单元10检测到蒸发器的管温大概从14℃持续上升到29℃，并且在B点检测单元10检测到蒸发器的管温达到了最大值29℃。其中，A点和B点之间的时间段的时长约为2min，即该A点和B点之间的时间段可以为第一目标时间段。在检测单元10检测到蒸发器的管温大概从14℃持续上升到最大温度值29℃后，第一判断模块201判断出蒸发器的管温持续上升并达到最大值29℃。第二判断模块202判断出A点和B点之间的时间段内蒸发器的管温持续上升的温度差值为15℃，该温度差值15℃等于预设温度差值15℃。在B点和C点之间的约12.5到14.5min内，检测单元10检测到蒸发器的管温大概在26℃到29℃之间，并且同时检测到环境温度为25℃，这样，在B点和C点之间的约12.5到14.5min内，环境温度和 蒸发器的管温的差值的最大值为4℃，最小值为1℃，因此，第三判断模块203判断出环境温度和蒸发器的管温的差值的最大值为4℃小于预设温度差极限值为5℃。通过上述检测结果，判断单元20的第一确定模块204确定出压缩机处在过载保护状态，即压缩机因为过载保护已经停机。在判断单元20的第一确定模块204确定出出压缩机处在过载保护状态，即压缩机因为过载保护已经停机后，屏蔽单元30从C点对应的14.5min这一时刻起屏蔽缺氟保护，假设该压缩机预定的过载保护时间长度为60min，那么上述屏蔽缺氟保护可以从14.5min持续到60min或者70min。在60min或者70min后对该屏蔽缺氟保护进行解除。
这样，通过本发明实施例，判断出第一目标时间段内蒸发器的管温持续上升并达到最大值，而且判断出蒸发器的管温在第一目标时间段持续上升的温度差值大于或者等于预设温度差值以及判断出第二目标时间段内环境温度和蒸发器的管温的差值小于预设温度差极限值后，及时屏蔽缺氟保护，消除了缺氟保护误报警，进而达到了防止压缩机在过载保护时出现缺氟保护误报警的效果。
根据本发明的实施例，还提供了一种压缩机过载保护控制方法，用于在压缩机出现过载保护时屏蔽缺氟保护。需要说明的是，本发明实施例所提供的压缩机过载保护控制方法可以在计算机设备上执行。需要说明的是，本发明实施例所提供的压缩机过载保护控制方法可以通过本发明实施例的压缩机过载保护控制装置来执行，本发明实施例的压缩机过载保护控制方装置也可以用于执行本发明实施例的压缩机过载保护控制方法。
图4是根据本发明第一实施例的压缩机过载保护控制方法的流程图。如图4所示，该压缩机过载保护控制方法包括如下的步骤S101至步骤S103：
步骤S101，检测压缩机的状态。
检测压缩机的状态可以检测压缩机的状态为闭合电源状态还是为断开电源状态。需要说明的是，在本发明实施例中，压缩机处在断开电源状态时，该压缩机整机仍然为得电状态。当压缩机过载时，压缩机的排气温度会很高，而一旦压缩机的排气温度过高，压缩机的电源就会断开，这时，检测压缩机的状态就会检测到压缩机的状态为断开电源状态，否则就会检测到压缩机的状态为闭合电源状态。检测压缩机的状态可以通过检测蒸发器的管温来检测压缩机为闭合电源状态或者断开电源状态。需要说明的是，步骤S101由除湿机和空调器的主控制器执行。
步骤S102，判断压缩机是否出现过载保护。
当检测到压缩机的状态为断开电源状态时，可以判断出压缩机出现过载保护，否则，当检测到压缩机的状态为闭合电源状态时，可以判断出压缩机未出现过载保护，即压缩机处于正常的工作状态。在判断出压缩机未出现过载保护时，执行步骤S101。在判断压缩机出现过载保护时，执行步骤S103。
步骤S103，屏蔽缺氟保护。
当判断出压缩机出现过载保护时，屏蔽缺氟保护，否则不对缺氟保护进行屏蔽，其中，对缺氟保护进行屏蔽可以是屏蔽缺氟保护的控制逻辑。
通过本发明实施例，在检测到压缩机由于排气的温度过高而处于断开电源状态时，判断出压缩机出现过载保护，此时屏蔽缺氟保护，这样，达到了防止压缩机在过载保护时出现缺氟保护误报警的效果。
图5是根据本发明第二实施例的压缩机过载保护控制方法的流程图。如图5所示，该方法包括步骤S201至步骤S206，该实施例可以作为图4所示实施例的优选实施方式。
步骤S201，检测第一目标时间段内蒸发器的管温以及第二目标时间段内环境温度和蒸发器的管温。
在本发明实施例中，第一目标时间段和第二目标时间段是相邻的时间段，并且第二目标时间段位于第一目标时间段之后。第一目标时间段的时长可以预先设定，优选地，第一目标时间段的时长可以预先设定为3min。在本发明实施例中。具体地，检测第一目标时间段内蒸发器的管温包括检测蒸发器在第一时刻的第一管温，检测蒸发器在第二时刻的第二管温，检测蒸发器在第三时刻的第三管温，其中，第一时刻、第二时刻和第三时刻可以为第一目标时间段内的任意三个连续时间点，并且第一时刻、第二时刻和第三时刻按时间先后顺序排列在时间轴上。在本发明实施例中，具体地，第二目标时间段内蒸发器的管温包括检测蒸发器在第四时刻的第四管温和检测蒸发器在第五时刻的第五管温，其中，第四时刻和第五时刻为第二目标时间段内任意连续的时间点，并且第五时刻位于第四时刻之后。
步骤S202，判断第一目标时间段内管温是否持续上升并达到最大值。
需要说明的是，在第一目标时间段内，当第一管温、第二管温和第三管温依次为前者小于后者，并且该三个管温值为连续数值时，则第一判断模块201判断出第一目标时间段内蒸发器的管温是持续上升的，进一步地，在临界状态下，当第一管温和第 三管温均小于第二管温时，则判断出第一目标时间段内管温持续上升并且在临界状态下达到了最大值。需要说明的是，在临界状态，第二时刻对应的第二管温为第一目标时间段内的最大温度。如果判断出第一目标时间段内蒸发器的管温持续上升并达到最大值，则执行步骤S203，否执行步骤S201。
步骤S203，判断蒸发器的管温在第一目标时间段持续上升的温度差值是否大于或者等于预设温度差值。
在判断出第一目标时间段内蒸发器的管温持续上升并达到最大值后，判断蒸发器的管温在第一目标时间段持续上升的温度差值是否大于或者等于预设温度差值，例如，当预设温度差值为15℃时，在第一目标时间段内，当第一目标时间段的终止时刻的管温和第一目标时间段的起始时刻的管温的差值大于15℃时，则判断出蒸发器的管温第一目标时间段持续上升的温度差值大于预设温度差值，当判断出蒸发器的管温第一目标时间段持续上升的温度差值大于预设温度差值时，执行步骤S204，否则执行步骤S201。
需要说明的是，步骤S202和步骤S203的执行顺序可以颠倒。
步骤S204，判断第二目标时间段内环境温度和蒸发器的管温的差值是否小于预设温度差极限值。
在本发明实施例中，如果判断出蒸发器的管温持续上升的温度差值大于或者等于预设温度差值，则判断第二目标时间段内环境温度和蒸发器的管温的差值是否小于预设温度差极限值，其中，预设温度差极限值可以为5℃。如果判断出第二目标时间段内环境温度和蒸发器的管温的差值小于预设温度差极限值，则执行步骤S205，否执行步骤S201。在本发明实施例中，当第四检测模块检测到第四管温，第五检测模块检测到第五管温后，可以计算第五管温和第四管温的温度差值。在第二目标时间段内，当第五管温小于第四管温时，即当温度差值小于零时，并且该两个管温值为连续数值时，则判断出第二目标时间段内蒸发器的管温是持续下降的。如果判断出第二目标时间段内环境温度和蒸发器的管温的差值小于预设温度差极限值，并且判断出第二目标时间段内蒸发器的管温是持续下降的，则执行步骤S205，否执行步骤S201。
步骤S205，确定压缩机出现过载保护。
如果判断出第二目标时间段内环境温度和蒸发器的管温的差值小于预设温度差极限值，则确定压缩机出现过载保护，否则判断出压缩机未出现过载保护。如果确定压缩机出现过载保护，则执行步骤S206。
步骤S206，如果压缩机出现过载保护，则屏蔽缺氟保护。
在本发明实施例中，可以采用以下步骤屏蔽缺氟保护：
获取预设过载保护时间段，例如，预设过载保护时间段可以设定为60min；在获取到预设过载保护时间段后，从预设过载保护时间段中除去第一目标时间段和第二目标时间段以确定第三目标时间段，其中，第一目标时间段、第二目标时间段和第三目标时间段为连续的时间段，并且第三目标时间段位于第二目标时间段之后；在得到第三目标时间段后，在第三目标时间段内屏蔽缺氟保护，或者在第三目标时间段及其延伸的一定时间段内屏蔽缺氟保护。例如，假设预设过载保护时间段设定为60min，第一目标时间段和第二目标时间段的时长分别为3min和5min，则第三目标时间段为某个小时的后52min，这样，可以在该某个小时的后52min内屏蔽缺氟保护或者在该某个小时的后52min以及下一小时的前10min内屏蔽缺氟保护。
进一步地，在本发明实施例中，在第三目标时间段内屏蔽缺氟保护之前，获取发送给压缩机的缺氟保护停机命令，其中，缺氟保护停机命令包括第一次缺氟保护停机命令，第二次缺氟保护停机命令和第三次缺氟保护停机命令。具体地，当第一次检测到缺氟保护数据时，主控制器向压缩机发送第一次缺氟保护停机命令，当第二次检测到缺氟保护数据时，主控制器向压缩机发送第二次缺氟保护停机命令，当第三次检测到缺氟保护数据时，主控制器向压缩机发送第三次缺氟保护停机命令。检测上述发送第三次缺氟保护停机命令的时刻是否在第一目标时间段内或者在第二目标时间段内。当检测到发送第三次缺氟保护停机命令的时刻在第一目标时间段内或者在第二目标时间段内后，屏蔽缺氟保护，否则不屏蔽缺氟保护。当检测到发送第三次缺氟保护停机命令的时刻在第一目标时间段内或者在第二目标时间段内后，不屏蔽缺氟保护，此时断定缺氟保护为正常的缺氟保护，执行缺氟保护报警。
从以上的描述中，可以看出，本发明通过判断出第一目标时间段内蒸发器的管温持续上升并达到最大值，并且判断出蒸发器的管温第一目标时间段持续上升的温度差值大于或者等于预设温度差值以及判断出第二目标时间段内环境温度和蒸发器的管温的差值小于预设温度差极限值后，屏蔽缺氟保护，消除了缺氟保护误报警，进而达到了防止压缩机在过载保护时出现缺氟保护误报警的效果。
需要说明的是，在附图的流程图示出的步骤可以在诸如一组计算机可执行指令的计算机系统中执行，并且，虽然在流程图中示出了逻辑顺序，但是在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤。
显然，本领域的技术人员应该明白，上述的本发明的各模块或各步骤可以用通用的计算装置来实现，它们可以集中在单个的计算装置上，或者分布在多个计算装置所组成的网络上，可选地，它们可以用计算装置可执行的程序代码来实现，从而，可以将它们存储在存储装置中由计算装置来执行，或者将它们分别制作成各个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样，本发明不限制于任何特定的硬件和软件结合。
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (12)

  1. 一种压缩机过载保护控制方法，其特征在于，包括：
    检测压缩机的状态；
    判断所述压缩机是否出现过载保护；以及
    如果所述压缩机出现过载保护，则屏蔽缺氟保护。
  2. 根据权利要求1所述的压缩机过载保护控制方法，其特征在于，所述压缩机过载保护控制方法用于除湿机的过载保护，所述除湿机包括蒸发器和所述压缩机，其中：
    检测压缩机的状态包括：检测第一目标时间段内所述蒸发器的管温以及第二目标时间段内环境温度和所述蒸发器的管温，其中，所述第一目标时间段和所述第二目标时间段是相邻的时间段，并且所述第二目标时间段位于所述第一目标时间段之后，
    判断所述压缩机是否出现过载保护包括：判断所述第一目标时间段内所述管温是否持续上升并达到最大值；在判断出所述第一目标时间段内所述管温持续上升并达到最大值之后，判断所述管温在所述第一目标时间段持续上升的温度差值是否大于或者等于预设温度差值；在判断出所述管温在所述第一目标时间段持续上升的温度差值大于或者等于预设温度差值之后，判断所述第二目标时间段内所述环境温度和所述管温的差值是否小于预设温度差极限值；如果判断出所述第二目标时间段内所述环境温度和所述管温的差值小于预设温度差极限值，则确定所述压缩机出现过载保护。
  3. 根据权利要求2所述的压缩机过载保护控制方法，其特征在于，
    检测第一目标时间段内蒸发器的管温包括：检测第一时刻所述蒸发器的第一管温；检测第二时刻所述蒸发器的第二管温；检测第三时刻所述蒸发器的第三管温，其中，所述第一时刻，所述第二时刻和所述第三时刻为所述第一目标时间段内任意连续的时间点，并且所述第二时刻位于所述第一时刻之后，所述第三时刻位于所述第二时刻之后，
    判断所述第一目标时间段内所述管温是否持续上升并达到最大值包括：通过判断所述第一管温和所述第二管温和所述第三管温的大小关系判断所述第一目标时间段内所述蒸发器的管温是否持续上升并达到最大值。
  4. 根据权利要求2所述的压缩机过载保护控制方法，其特征在于，
    检测第二目标时间段内所述蒸发器的管温包括：检测第四时刻所述蒸发器的第四管温；检测第五时刻所述蒸发器的第五管温，其中，所述第四时刻和所述第五时刻为所述第二目标时间段内任意连续的时间点，并且所述第五时刻位于所述第四时刻之后，
    判断所述第二目标时间段内所述环境温度和所述管温的差值是否小于预设温度差极限值包括：计算所述第五管温和所述第四管温的温度差值；以及判断所述温度差值是否小于零以判断所述管温在所述第二目标时间段内是否持续下降。
  5. 根据权利要求2所述的压缩机过载保护控制方法，其特征在于，所述屏蔽缺氟保护包括：
    获取预设过载保护时间段；
    从所述预设过载保护时间段中除去所述第一目标时间段和所述第二目标时间段以确定第三目标时间段，其中，所述第三目标时间段与所述第二目标时间段相邻，并且所述第三目标时间段位于所述第二目标时间段之后；以及
    在所述第三目标时间段内屏蔽缺氟保护。
  6. 根据权利要求5所述的压缩机过载保护控制方法，其特征在于，在所述第三目标时间段内屏蔽缺氟保护之前，所述屏蔽缺氟保护还包括：
    获取发送给所述压缩机的缺氟保护停机命令，其中，所述缺氟保护停机命令包括第一次缺氟保护停机命令，第二次缺氟保护停机命令和第三次缺氟保护停机命令；以及
    检测发送所述第三次缺氟保护停机命令的时刻是否在所述第一目标时间段内或者在所述第二目标时间段内，
    其中，如果检测到发送所述第三次缺氟保护停机命令的时刻不在所述第一目标时间段内或者所述第二目标时间段内，则屏蔽缺氟保护。
  7. 一种压缩机过载保护控制装置，其特征在于，包括：
    检测单元，用于检测压缩机的状态；
    判断单元，用于判断所述压缩机是否出现过载保护；以及
    屏蔽单元，用于如果所述压缩机出现过载保护，则屏蔽缺氟保护。
  8. 根据权利要求7所述的压缩机过载保护控制装置，其特征在于，所述压缩机过载保护控制装置用于除湿机的过载保护，所述除湿机包括蒸发器和所述压缩机，其中：
    所述检测单元还用于检测第一目标时间段内所述蒸发器的管温以及第二目标时间段内环境温度和所述蒸发器的管温，其中，所述第一目标时间段和所述第二目标时间段是相邻的时间段，并且所述第二目标时间段位于所述第一目标时间段之后，
    所述判断单元包括：第一判断模块，用于判断所述第一目标时间段内所述管温是否持续上升并达到最大值；第二判断模块，用于在判断出所述第一目标时间段内所述管温持续上升并达到最大值之后，判断所述管温在所述第一目标时间段持续上升的温度差值是否大于或者等于预设温度差值；第三判断模块，用于在判断出所述管温在所述第一目标时间段持续上升的温度差值大于或者等于预设温度差值之后，判断所述第二目标时间段内所述环境温度和所述管温的差值是否小于预设温度差极限值；第一确定模块，用于如果判断出所述第二目标时间段内所述环境温度和所述管温的差值小于预设温度差极限值，则确定所述压缩机出现过载保护。
  9. 根据权利要求8所述的压缩机过载保护控制装置，所述检测单元包括：
    第一检测模块，用于检测第一时刻所述蒸发器的第一管温；
    第二检测模块，用于检测第二时刻所述蒸发器的第二管温；
    第三检测模块，用于检测第三时刻所述蒸发器的第三管温；以及
    其中，所述第一时刻，所述第二时刻和所述第三时刻为所述第一目标时间段内任意连续的时间点，并且所述第二时刻位于所述第一时刻之后，所述第三时刻位于所述第二时刻之后，所述第一判断模块还用于通过判断所述第一管温和所述第二管温和所述第三管温的大小关系判断所述第一目标时间段内所述蒸发器的管温是否持续上升并达到最大值。
  10. 根据权利要求8所述的压缩机过载保护控制装置，其特征在于，
    所述检测单元还包括：第四检测模块，用于检测第四时刻所述蒸发器的第四管温；第五检测模块，用于检测第五时刻所述蒸发器的第五管温，其中，所 述第四时刻和所述第五时刻为所述第二目标时间段内任意连续的时间点，并且所述第五时刻位于所述第四时刻之后，
    所述第二判断模块包括：计算子模块，用于计算所述第五管温和所述第四管温的温度差值；以及判断子模块，用于判断所述温度差值是否小于零以判断所述管温在所述第二目标时间段内是否持续下降。
  11. 根据权利要求8所述的压缩机过载保护控制装置，其特征在于，所述屏蔽单元包括：
    第一获取模块，用于获取预设过载保护时间段；
    第二确定模块，用于从所述预设过载保护时间段中除去所述第一目标时间段和所述第二目标时间段以确定第三目标时间段，其中，所述第三目标时间段与所述第二目标时间段相邻，并且所述第三目标时间段位于所述第二目标时间段之后；以及
    屏蔽模块，用于在所述第三目标时间段内屏蔽缺氟保护。
  12. 根据权利要求11所述的压缩机过载保护控制装置，所述屏蔽单元还包括：
    第二获取模块，用于在在所述第三目标时间段内屏蔽缺氟保护之前获取发送给所述压缩机的缺氟保护停机命令，其中，所述缺氟保护停机命令包括第一次缺氟保护停机命令，第二次缺氟保护停机命令和第三次缺氟保护停机命令；以及
    第六检测模块，用于检测发送所述第三次缺氟保护停机命令的时刻是否在所述第一目标时间段内或者在所述第二目标时间段内，
    其中，屏蔽单元还用于当检测到发送所述第三次缺氟保护停机命令的时刻不在所述第一目标时间段内或者在所述第二目标时间段内时，屏蔽缺氟保护。
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CN110398022A (zh) * 2019-08-02 2019-11-01 宁波奥克斯电气股份有限公司 空调过载保护判断方法、装置和空调器
CN110398022B (zh) * 2019-08-02 2020-07-31 宁波奥克斯电气股份有限公司 空调过载保护判断方法、装置和空调器
CN115682369A (zh) * 2022-11-03 2023-02-03 珠海格力电器股份有限公司 一种空调的控制方法、装置、空调和存储介质

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