WO2019105028A1 - Climatiseur et procédé et dispositif de commande associés - Google Patents

Climatiseur et procédé et dispositif de commande associés Download PDF

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Publication number
WO2019105028A1
WO2019105028A1 PCT/CN2018/093146 CN2018093146W WO2019105028A1 WO 2019105028 A1 WO2019105028 A1 WO 2019105028A1 CN 2018093146 W CN2018093146 W CN 2018093146W WO 2019105028 A1 WO2019105028 A1 WO 2019105028A1
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WIPO (PCT)
Prior art keywords
temperature
current
air conditioner
controlling
moisture content
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PCT/CN2018/093146
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English (en)
Chinese (zh)
Inventor
席战利
李金波
张博博
Original Assignee
广东美的制冷设备有限公司
美的集团股份有限公司
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Publication of WO2019105028A1 publication Critical patent/WO2019105028A1/fr

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    • 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
    • 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

Definitions

  • the present invention relates to the field of air conditioning technology, and in particular, to a method for controlling an air conditioner, a control device for an air conditioner, and an air conditioner having the control device.
  • the operation control rules generally give priority to the indoor temperature control.
  • the indoor humidity is low, it is possible to keep the high-frequency operation of the compressor all the time, which will undoubtedly cause the air to be drier; when the indoor humidity is high, it is possible to keep the low-frequency operation of the compressor all the time, and it is impossible to effectively dehumidify and cause air.
  • Low temperature and humidity which affects human comfort.
  • a first object of the present invention is to provide a control method for an air conditioner which can simultaneously satisfy the user's comfort requirements for temperature and humidity, and can save costs.
  • a second object of the present invention is to provide a computer readable storage medium.
  • a third object of the present invention is to provide a control device for an air conditioner.
  • a fourth object of the present invention is to provide an air conditioner.
  • a first aspect of the present invention provides a method for controlling an air conditioner, including the steps of: acquiring a set temperature and setting a humidity during a cooling operation of the air conditioner; and according to the set temperature And setting the humidity to obtain the set moisture content; obtaining the current indoor ambient temperature, the current indoor environment humidity, and the current indoor heat exchanger coil temperature; obtaining the current content according to the current indoor ambient temperature and the current indoor environmental humidity; a wet amount and a current dew point temperature; determining a magnitude relationship between the set temperature and the current indoor ambient temperature, a relationship between the set moisture content and the current moisture content; As a result, the current dew point temperature and the current indoor heat exchanger coil temperature control the temperature and humidity of the air conditioner.
  • the judgment result of judging the magnitude relationship between the set temperature and the current indoor ambient temperature and setting the magnitude relationship between the moisture content and the current moisture content is performed.
  • the temperature and humidity control is also implemented according to the current dew point temperature and the current indoor heat exchanger coil temperature, thereby being able to simultaneously satisfy the user's comfort requirements for temperature and humidity, and can not increase the basis of the humidity sensor.
  • the basic components of the air conditioner are used to achieve effective control of humidity, thereby saving costs.
  • control method of the air conditioner according to the above embodiment of the present invention may further have the following additional technical features:
  • the temperature and humidity control of the air conditioner according to the determination result, the current dew point temperature, and the current indoor heat exchanger coil temperature includes: if the set temperature is less than or equal to Controlling the air conditioner to cool down and dehumidify the current indoor ambient temperature and the set moisture content is less than or equal to the current moisture content; if the set temperature is less than or equal to the current indoor ambient temperature and the setting If the predetermined moisture content is greater than the current moisture content, controlling the air conditioner to cool down and moisturize the operation; if the set temperature is greater than the current indoor ambient temperature and the set moisture content is less than or equal to the current content Controlling the heat preservation and dehumidification operation of the air conditioner; if the set temperature is greater than the current indoor ambient temperature and the set moisture content is greater than the current moisture content, controlling the air conditioner insulation Moisturizing operation.
  • the compressor of the air conditioner is controlled to operate according to a rule established according to the current indoor ambient temperature and the set temperature.
  • controlling the air conditioner to cool down and dehumidify the operation includes: controlling the compressor to operate at an upper limit frequency, and determining that the current indoor change is performed when the compressor is operated at the upper limit frequency Whether the temperature of the heat exchanger coil is greater than the current dew point temperature; if the current indoor heat exchanger coil temperature is greater than the current dew point temperature, controlling the opening degree of the dehumidification valve of the air conditioner to decrease by a first preset Degree, or controlling the rotation speed of the indoor fan of the air conditioner to be reduced to a minimum rotation speed; if the current indoor heat exchanger coil temperature is less than or equal to the current dew point temperature, controlling the air conditioner to maintain the current running state, the control station
  • the air conditioner cooling and moisturizing operation includes: determining whether the current indoor heat exchanger coil temperature is greater than the current dew point temperature; if the current indoor heat exchanger coil temperature is greater than the current dew point temperature, the control station The air conditioner maintains a current operating state; if the current indoor heat
  • a second aspect of the present invention provides a computer readable storage medium having instructions stored therein, when the instructions are executed, the air conditioner performs the first aspect of the present invention Control method.
  • the computer readable storage medium of the embodiment of the present invention can implement the above-described control method of the air conditioner, so that the air conditioner can simultaneously satisfy the user's comfort requirements for temperature and humidity, and can save costs.
  • a third aspect of the present invention provides a control device for an air conditioner, including: a first acquisition module, configured to acquire a set temperature and a set humidity when the air conditioner is in a cooling operation; a acquiring module, configured to acquire a set moisture content according to the set temperature and the set humidity; and a third acquiring module, configured to acquire a current indoor ambient temperature, a current indoor environmental humidity, and a current indoor heat exchanger coil
  • the second obtaining module is further configured to obtain a current moisture content and a current dew point temperature according to the current indoor ambient temperature and the current indoor environmental humidity; and a control module configured to use the set temperature and the current indoor environment Judging the magnitude relationship between the temperatures, the relationship between the set moisture content and the current moisture content, and determining the current dew point temperature and the current indoor heat exchanger coil temperature according to the determination result
  • the air conditioner is subjected to temperature and humidity control.
  • the control module determines the magnitude relationship between the set humidity and the current indoor ambient temperature, and determines the magnitude relationship between the moisture content and the current moisture content.
  • the temperature and humidity control is also implemented according to the current dew point temperature and the current indoor heat exchanger coil temperature, thereby simultaneously satisfying the user's comfort requirements for temperature and humidity, and without increasing the humidity sensor.
  • the basic components of the air conditioner are used to achieve effective control of the humidity, thereby saving costs.
  • control device of the air conditioner according to the above embodiment of the present invention may further have the following additional technical features:
  • control module is configured to control the air conditioner when the set temperature is less than or equal to the current indoor ambient temperature and the set moisture content is less than or equal to the current moisture content. Cooling down, dehumidifying operation, and controlling the air conditioner to cool down, moisturize, and when the set temperature is less than or equal to the current indoor ambient temperature and the set moisture content is greater than the current moisture content.
  • controlling the air conditioner heat preservation and dehumidification operation and the set temperature is greater than the current
  • the indoor air temperature and the set moisture content are greater than the current moisture content, and the air conditioner is controlled to be kept warm and moisturized.
  • control module controls the compressor of the air conditioner to operate according to the rules of the current indoor ambient temperature and the set temperature before performing temperature and humidity control on the air conditioner. .
  • the control module controls the air conditioner to cool down and dehumidify by performing the following steps: controlling the compressor to operate at an upper limit frequency, and when the compressor is operating at the upper limit frequency Determining whether the current indoor heat exchanger coil temperature is greater than the current dew point temperature; if the current indoor heat exchanger coil temperature is greater than the current dew point temperature, controlling the opening degree of the dehumidification valve of the air conditioner Reducing the first preset opening degree, or controlling the rotation speed of the indoor fan of the air conditioner to decrease to a minimum rotation speed; if the current indoor heat exchanger coil temperature is less than or equal to the current dew point temperature, controlling the air conditioner Maintaining the current operating state, the control module controls the air conditioner cooling and moisturizing operation by performing the following steps: determining whether the current indoor heat exchanger coil temperature is greater than the current dew point temperature; if the current indoor heat exchange If the coil temperature is greater than the current dew point temperature, controlling the air conditioner to maintain the current operating state; if the current indoor heat
  • the control module controls the air conditioner heat preservation and dehumidification operation by performing the following steps: controlling the compressor to operate at a lower limit frequency, and controlling the rotation speed of the indoor fan to be reduced to a minimum rotation speed; When the lower limit frequency is running and the rotation speed of the indoor fan is reduced to the minimum rotation speed, determining whether the current indoor heat exchanger coil temperature is greater than the current dew point temperature; if the current indoor heat exchanger coil temperature is greater than Determining the current dew point temperature, controlling the opening degree of the dehumidification valve of the air conditioner to decrease by a first preset opening degree; if the current indoor heat exchanger coil temperature is less than or equal to the current dew point temperature, controlling the air conditioner
  • the controller maintains the current operating state, and the control module controls the air conditioner to maintain the moisturizing operation by performing the following steps: controlling the compressor to stop.
  • an embodiment of the fourth aspect of the present invention provides an air conditioner comprising the control device for an air conditioner according to the embodiment of the third aspect of the present invention.
  • the air conditioner according to the embodiment of the present invention can simultaneously satisfy the user's comfort requirements for temperature and humidity by the above-described control device for the air conditioner, and can save costs.
  • FIG. 1 is a flow chart of a method of controlling an air conditioner according to an embodiment of the present invention
  • FIG. 2 is a flow chart of a method of controlling an air conditioner according to an embodiment of the present invention
  • FIG. 3 is a flow chart of a method of controlling an air conditioner according to another embodiment of the present invention.
  • FIG. 4 is a block schematic diagram of a control device of an air conditioner according to an embodiment of the present invention.
  • FIG. 1 is a flow chart of a method of controlling an air conditioner according to an embodiment of the present invention.
  • a method for controlling an air conditioner according to an embodiment of the present invention includes the following steps:
  • the user can set parameters of the air conditioner.
  • the set temperature can be set by the remote controller, that is, the target temperature of the air conditioner operation and the set humidity, that is, the target humidity of the air conditioner operation, etc., so that the air conditioner can be used.
  • the device performs temperature adjustment and humidity adjustment according to the set target temperature and target humidity. If the user does not set the temperature and humidity at the time of power-on, the set temperature and the set humidity of the air conditioner at the time of the previous shutdown are used as the set temperature and the set humidity at the time of the operation.
  • the correspondence between temperature, humidity, and moisture content may be acquired in advance, and the correspondence relationship may be recorded and stored in the form of a table.
  • the set moisture content can be obtained by looking up the table.
  • T1, T2, T3, ... Tn represent temperature
  • ⁇ 1, ⁇ 2, ⁇ 3, ..., ⁇ m represent humidity
  • dL11, dL12, dL13, ..., dLmn represent moisture content
  • the air conditioner of the embodiment of the invention may include an indoor ambient temperature sensor, an indoor ambient humidity sensor, and an indoor heat exchanger coil temperature sensor corresponding to the indoor heat exchanger coil to detect the current indoor ambient temperature, the current indoor environmental humidity, and Current indoor heat exchanger coil temperature.
  • the current moisture content can be obtained according to the current indoor ambient temperature and the current indoor environmental humidity.
  • the correspondence between temperature, humidity, and dew point temperature may also be acquired in advance, and the correspondence relationship is recorded and stored in the form of a table. Therefore, after obtaining the current indoor ambient temperature and the current indoor environmental humidity, the current dew point temperature can be obtained by looking up the table.
  • T1, T2, T3, ... Tn represent temperatures
  • ⁇ 1, ⁇ 2, ⁇ 3, ..., ⁇ m represent humidity
  • TL11, TL12, TL13, ..., TLmn represent dew point temperatures, wherein the magnitudes of m and n determine the above correspondence The amount of data.
  • S6 Perform temperature and humidity control on the air conditioner according to the judgment result, the current dew point temperature, and the current indoor heat exchanger coil temperature.
  • the air conditioner is controlled to cool down and dehumidify; if the set temperature is less than or equal to the current indoor ambient temperature and the humidity is set If the amount is greater than the current moisture content, the air conditioner is controlled to cool down and moisturize; if the set temperature is greater than the current indoor ambient temperature and the moisture content is set to be less than or equal to the current moisture content, the air conditioner is controlled to be insulated and dehumidified; When the temperature is greater than the current indoor ambient temperature and the set moisture content is greater than the current moisture content, the air conditioner is controlled to maintain heat and moisturize.
  • the compressor of the air conditioner is controlled to operate according to a rule established according to the current indoor ambient temperature and the set temperature, that is, the compressor is controlled to adjust the current indoor ambient temperature to the set temperature. Operation, if the current indoor ambient temperature is higher than the set temperature, the operating frequency of the compressor is increased, and if the current indoor ambient temperature approaches or exceeds the set temperature, the operating frequency of the compressor is lowered.
  • the air conditioner of the embodiment of the present invention may include a dehumidification valve or may not include a dehumidification valve.
  • the throttling operation is controlled by controlling the dehumidification valve, and the throttle element is controlled to be fully open to dehumidify the air conditioner.
  • the air conditioner may include a compressor, an outdoor heat exchanger, a throttle element, and an indoor heat exchanger connected in sequence, and an indoor fan corresponding to the indoor heat exchanger, wherein the refrigerant pipeline of the indoor heat exchanger Including two parts, one end of a part of the refrigerant pipeline is directly connected with the throttle element and the compressor; the other part of the refrigerant pipeline is connected to the throttle element through a dehumidification valve, and the other end is connected to the compressor.
  • the dehumidification valve and the throttle element may both be electronic expansion valves.
  • the dehumidification device By controlling the throttling element in the above structure to be in the fully open state, and controlling the dehumidification valve to perform the throttling operation, the dehumidification device is controlled to be turned on. At this time, the high-temperature and high-pressure gaseous refrigerant from the compressor is converted into a high-temperature and high-pressure liquid refrigerant after being exchanged by the outdoor heat exchanger, and then a part of the high-temperature and high-pressure liquid refrigerant directly enters a part of the refrigerant pipe of the indoor heat exchanger for heat exchange.
  • the low-temperature and low-pressure liquid refrigerant is returned to the compressor; the other part of the high-temperature and high-pressure liquid refrigerant is thawed by the dehumidification valve, and then becomes a low-temperature low-pressure liquid refrigerant, and then flows back through another part of the refrigerant pipe of the indoor heat exchanger.
  • a part of the refrigerant pipe of the indoor heat exchanger is used as a condenser to realize heating of the room, and another part of the refrigerant pipe is used as an evaporator to realize a large amount of dehumidification indoors, thereby achieving constant temperature dehumidification indoors and ensuring indoor humidity comfort. Sex.
  • the dehumidification valve when the opening degree of the dehumidification valve is decreased, the amount of dehumidification is increased; when the opening degree of the dehumidification valve is increased, the amount of dehumidification is decreased.
  • the dehumidification valve can be controlled to be fully open, and the throttling element is controlled to perform the throttling operation, that is, the control throttling element returns to the normal working state.
  • dehumidification is performed by controlling the rotation speed of the indoor fan to be lowered.
  • controlling the air conditioner to cool down and dehumidify the operation includes: controlling the compressor to operate at the upper limit frequency, and determining the current indoor when the compressor is operated at the upper limit frequency. Whether the heat exchanger coil temperature is greater than the current dew point temperature; if the current indoor heat exchanger coil temperature is greater than the current dew point temperature, controlling the opening degree of the dehumidification valve of the air conditioner to decrease the first preset opening degree, or controlling the air conditioner The speed of the indoor fan is reduced to the minimum speed; if the current indoor heat exchanger coil temperature is less than or equal to the current dew point temperature, the air conditioner is controlled to maintain the current operating state.
  • controlling the cooling and moisturizing operation of the air conditioner comprises: determining whether the current indoor heat exchanger coil temperature is greater than the current dew point temperature; if the current indoor heat exchanger coil temperature is greater than the current dew point temperature, then controlling The air conditioner maintains the current running state; if the current indoor heat exchanger coil temperature is less than or equal to the current dew point temperature, the opening degree of the dehumidification valve of the control air conditioner is increased by the first preset opening degree, or the indoor fan speed of the air conditioner is controlled to increase. The first preset percentage.
  • controlling the heat preservation and dehumidification operation of the air conditioner comprises: controlling the lower limit frequency operation of the compressor, and controlling the rotation speed of the indoor fan to be reduced to a minimum rotation speed; operating at a lower limit frequency of the compressor and the rotation speed of the indoor fan When the minimum speed is reduced, it is judged whether the current indoor heat exchanger coil temperature is greater than the current dew point temperature; if the current indoor heat exchanger coil temperature is greater than the current dew point temperature, the opening degree of the dehumidification valve for controlling the air conditioner is decreased by the first pre- Set the opening degree; if the current indoor heat exchanger coil temperature is less than or equal to the current dew point temperature, the air conditioner is controlled to maintain the current operating state.
  • controlling the heat preservation and moisturization operation of the air conditioner includes: controlling the compressor to stop.
  • control method of the air conditioner may include the following steps:
  • the air conditioner is turned on, and the set temperature Ts, the set humidity ⁇ s, and the set moisture content ds are obtained.
  • control compressor and the electronic expansion valve are in a predetermined state.
  • the established state is the compressor operating rule and the electronic expansion valve switching state based on the current indoor ambient temperature and set temperature.
  • step S107 determining whether the compressor is at the highest frequency. If yes, step S109 is performed; if not, step S109 is performed after step S108 is performed.
  • step S123 determining whether the compressor is at the lowest frequency. The lowest frequency is greater than zero. If yes, step S125 is performed; if not, step S125 is performed after step S124 is performed.
  • step S125 Determine whether the indoor fan is at the lowest windshield. If yes, step S127 is performed; if not, step S127 is performed after step S126 is performed.
  • the indoor heat exchanger coil has a dehumidifying effect and can maintain the current state.
  • step S111, S113, S118, S120, S129, S131, and S134 the process returns to step S104 to perform temperature and humidity control.
  • control method of the air conditioner may include the following steps:
  • the air conditioner is turned on, the set temperature Ts is obtained, the humidity ⁇ s is set, and the set moisture content ds is obtained.
  • the established state is the compressor operating rule and the electronic expansion valve switching state based on the current indoor ambient temperature and set temperature.
  • step S207 determining whether the compressor is at the highest frequency. If yes, step S209 is performed; if not, step S209 is performed after step S208 is performed.
  • the wind speed of the control indoor fan is reduced to a minimum.
  • T2>TL the indoor heat exchanger coil has no dehumidification effect, and the wind speed of the indoor fan is controlled to be dehumidified.
  • the indoor heat exchanger coil has a dehumidifying effect and can maintain the current state.
  • the wind speed of the indoor fan is controlled to increase by 10%.
  • T2 ⁇ TL the indoor heat exchanger coil has dehumidification effect, and the wind speed of the indoor fan is controlled to increase or decrease the dehumidification.
  • step S223 determining whether the compressor is at the lowest frequency. If yes, step S225 is performed; if not, step S225 is performed after step S224 is performed.
  • step S225 determining whether the indoor fan is at the lowest windshield. If yes, the process returns to step S204; if not, the process returns to step S204 after executing step S226.
  • Ts>T1 the indoor ambient temperature reaches or falls below the set temperature; ds>dL, the indoor humidity is small, no need to dehumidify.
  • step S211, S213, S218, S220, S226, and S229 the process returns to step S204 to perform temperature and humidity control.
  • the control method of the air conditioner performs the relationship between the set humidity and the current indoor ambient temperature, and the relationship between the moisture content and the current moisture content.
  • the temperature and humidity control is also implemented according to the current dew point temperature and the current indoor heat exchanger coil temperature, thereby being able to simultaneously satisfy the user's comfort requirements for temperature and humidity, and can
  • the basic components of the air conditioner are used to achieve effective control of the humidity, thereby also saving costs.
  • the present invention also provides a computer readable storage medium.
  • the computer readable storage medium of the embodiment of the present invention has an instruction stored therein, and when the instruction is executed, the air conditioner can execute the control method of the air conditioner proposed by the above embodiment of the present invention.
  • the computer readable storage medium of the embodiment of the present invention can implement the above-described control method of the air conditioner, so that the air conditioner can simultaneously satisfy the user's comfort requirements for temperature and humidity, and can save costs.
  • the present invention also provides a control device for an air conditioner.
  • the control device of the air conditioner includes: a first acquisition module 10, a second acquisition module 20, a third acquisition module 30, and a control module 40.
  • the first obtaining module 10 is configured to acquire a set temperature and a set humidity when the air conditioner is in a cooling operation; the second acquiring module 20 is configured to acquire a set moisture content according to the set temperature and the set humidity; The module 30 is configured to obtain the current indoor ambient temperature, the current indoor ambient humidity, and the current indoor heat exchanger coil temperature. The second obtaining module 20 is further configured to obtain the current moisture content and the current dew point according to the current indoor ambient temperature and the current indoor environmental humidity.
  • the temperature control unit 40 is configured to determine the relationship between the set temperature and the current indoor ambient temperature, and determine the relationship between the moisture content and the current moisture content, and based on the determination result, the current dew point temperature, and the current The indoor heat exchanger coil temperature controls the temperature and humidity of the air conditioner.
  • the user can set the parameter of the air conditioner, and set the set temperature by the remote controller, that is, the target temperature of the air conditioner operation and the set humidity, that is, the target humidity of the air conditioner operation, etc., so that the air conditioner is based on
  • the set target temperature and target humidity are temperature adjusted and humidity adjusted. If the user does not set the temperature and humidity at the time of power-on, the set temperature and the set humidity of the air conditioner at the time of the previous shutdown are used as the set temperature and the set humidity at the time of the operation.
  • the second obtaining module 20 may obtain a correspondence between temperature, humidity, and moisture content in advance, and record and store the correspondence in the form of a table. Thus, after acquiring the set temperature and the set humidity, the second acquisition module 20 can look up the table to obtain the set moisture content.
  • the correspondence between temperature, humidity and moisture content can be as shown in Table 1.
  • the third obtaining module 30 can obtain the current indoor ambient temperature through the indoor ambient temperature sensor, the indoor ambient humidity sensor, and the indoor heat exchanger coil temperature sensor corresponding to the indoor heat exchanger coil, respectively. Current indoor ambient humidity and current indoor heat exchanger coil temperature.
  • the second obtaining module 20 can obtain the current moisture content according to the current indoor ambient temperature and the current indoor environmental humidity checklist 1.
  • the second obtaining module 20 may further acquire a correspondence between temperature, humidity, and dew point temperature, and record and store the corresponding relationship in the form of a table. Therefore, after acquiring the current indoor ambient temperature and the current indoor environmental humidity, the second obtaining module 20 can look up the table to obtain the current dew point temperature.
  • the correspondence between temperature, humidity and dew point temperature can be as shown in Table 2.
  • the control module 30 controls the air conditioner to cool down and dehumidify when the set temperature is less than or equal to the current indoor ambient temperature and the set moisture content is less than or equal to the current moisture content, and the set temperature is less than or equal to the current indoor ambient temperature and the setting includes
  • the air conditioner is controlled to cool down and moisturize
  • the air conditioner is controlled to be insulated and dehumidified.
  • the air conditioner is controlled to be kept warm and moisturized.
  • the control module 30 can control the compressor of the air conditioner to operate according to the rules established by the current indoor ambient temperature and the set temperature. That is, the compressor operation is controlled by adjusting the current indoor ambient temperature to the set temperature. If the current indoor ambient temperature is higher than the set temperature, the operating frequency of the compressor is increased, if the current indoor ambient temperature approaches or exceeds the setting. Temperature, which reduces the operating frequency of the compressor.
  • the air conditioner of the embodiment of the present invention may include a dehumidification valve or may not include a dehumidification valve.
  • the throttling operation is controlled by controlling the dehumidification valve, and the throttle element is controlled to be fully open to dehumidify the air conditioner.
  • the air conditioner may include a compressor, an outdoor heat exchanger, a throttle element, and an indoor heat exchanger connected in sequence, and an indoor fan corresponding to the indoor heat exchanger, wherein the refrigerant pipeline of the indoor heat exchanger Including two parts, one end of a part of the refrigerant pipeline is directly connected with the throttle element and the compressor; the other part of the refrigerant pipeline is connected to the throttle element through a dehumidification valve, and the other end is connected to the compressor.
  • the dehumidification valve and the throttle element may both be electronic expansion valves.
  • the dehumidification device By controlling the throttling element in the above structure to be in the fully open state, and controlling the dehumidification valve to perform the throttling operation, the dehumidification device is controlled to be turned on. At this time, the high-temperature and high-pressure gaseous refrigerant from the compressor is converted into a high-temperature and high-pressure liquid refrigerant after being exchanged by the outdoor heat exchanger, and then a part of the high-temperature and high-pressure liquid refrigerant directly enters a part of the refrigerant pipe of the indoor heat exchanger for heat exchange.
  • the low-temperature and low-pressure liquid refrigerant is returned to the compressor; the other part of the high-temperature and high-pressure liquid refrigerant is thawed by the dehumidification valve, and then becomes a low-temperature low-pressure liquid refrigerant, and then flows back through another part of the refrigerant pipe of the indoor heat exchanger.
  • a part of the refrigerant pipe of the indoor heat exchanger is used as a condenser to realize heating of the room, and another part of the refrigerant pipe is used as an evaporator to realize a large amount of dehumidification indoors, thereby achieving constant temperature dehumidification indoors and ensuring indoor humidity comfort. Sex.
  • the dehumidification valve when the opening degree of the dehumidification valve is decreased, the amount of dehumidification is increased; when the opening degree of the dehumidification valve is increased, the amount of dehumidification is decreased.
  • the dehumidification valve can be controlled to be fully open, and the throttling element is controlled to perform the throttling operation, that is, the control throttling element returns to the normal working state.
  • dehumidification is performed by controlling the rotation speed of the indoor fan to be lowered.
  • control module 30 can control the air conditioner to cool down and dehumidify by performing the following steps: controlling the compressor to operate at the upper limit frequency, and determining the current indoor heat exchange when the compressor is operated at the upper limit frequency.
  • the opening degree of the dehumidification valve of the control air conditioner is decreased by the first preset opening degree, or the indoor fan of the air conditioner is controlled The speed of the motor is reduced to the minimum speed; if the current indoor heat exchanger coil temperature is less than or equal to the current dew point temperature, the air conditioner is controlled to maintain the current operating state.
  • the control module 30 can control the cooling and moisturizing operation of the air conditioner by performing the following steps: determining whether the current indoor heat exchanger coil temperature is greater than the current dew point temperature; if the current indoor heat exchanger coil temperature is greater than the current dew point temperature, controlling the air conditioner Maintaining the current running state; if the current indoor heat exchanger coil temperature is less than or equal to the current dew point temperature, controlling the opening degree of the dehumidification valve of the air conditioner to increase the first preset opening degree, or controlling the indoor fan speed of the air conditioner to increase first The default percentage.
  • the control module 30 can control the air conditioner heat preservation and dehumidification operation by performing the following steps: controlling the lower limit frequency operation of the compressor, and controlling the speed of the indoor fan to be reduced to the minimum speed; operating at the lower limit frequency of the compressor and reducing the speed of the indoor fan to At the lowest speed, it is determined whether the current indoor heat exchanger coil temperature is greater than the current dew point temperature; if the current indoor heat exchanger coil temperature is greater than the current dew point temperature, the opening degree of the dehumidification valve that controls the air conditioner is decreased by the first preset opening Degree; if the current indoor heat exchanger coil temperature is less than or equal to the current dew point temperature, the air conditioner is controlled to maintain the current operating state.
  • the control module 30 can control the air conditioner heat preservation and moisturizing operation by performing the following steps: controlling the compressor to stop.
  • the control module determines the magnitude relationship between the set humidity and the current indoor ambient temperature, and determines the magnitude relationship between the moisture content and the current moisture content.
  • the temperature and humidity control is also implemented according to the current dew point temperature and the current indoor heat exchanger coil temperature, thereby simultaneously satisfying the user's comfort requirements for temperature and humidity, and without increasing the humidity sensor.
  • the basic components of the air conditioner are used to achieve effective control of the humidity, thereby saving costs.
  • the present invention also proposes an air conditioner.
  • the air conditioner of the embodiment of the present invention includes the control device of the air conditioner according to the above-mentioned embodiments of the present invention.
  • control device of the air conditioner according to the above-mentioned embodiments of the present invention.
  • the air conditioner according to the embodiment of the present invention can simultaneously satisfy the user's comfort requirements for temperature and humidity by the above-described control device for the air conditioner, and can save costs.
  • first and second are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.
  • features defining “first” and “second” may include one or more of the features either explicitly or implicitly.
  • the meaning of "a plurality” is two or more unless specifically and specifically defined otherwise.
  • the terms “installation”, “connected”, “connected”, “fixed” and the like shall be understood broadly, and may be either a fixed connection or a detachable connection, unless explicitly stated and defined otherwise. , or integrated; can be mechanical connection, or can be electrical connection; can be directly connected, or can be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction of two elements.
  • installation can be understood on a case-by-case basis.
  • the first feature "on” or “under” the second feature may be a direct contact of the first and second features, or the first and second features may be indirectly through an intermediate medium, unless otherwise explicitly stated and defined. contact.
  • the first feature "above”, “above” and “above” the second feature may be that the first feature is directly above or above the second feature, or merely that the first feature level is higher than the second feature.
  • the first feature “below”, “below” and “below” the second feature may be that the first feature is directly below or obliquely below the second feature, or merely that the first feature level is less than the second feature.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

L'invention concerne un climatiseur, ainsi qu'un procédé et un dispositif de commande associés. Le procédé de commande selon l'invention comprend les étapes suivantes consistant : lorsque le climatiseur réalise une opération de refroidissement, à acquérir une température définie et une humidité définie ; à acquérir, en fonction de la température définie et de l'humidité définie, une teneur en humidité définie ; à acquérir une température d'environnement intérieur courante, une humidité d'environnement intérieur courante et une température de bobine d'échangeur de chaleur intérieur courante ; à acquérir, en fonction de la température d'environnement intérieur courante et de l'humidité d'environnement intérieur courante, une teneur en humidité courante et une température de point de rosée courante ; à déterminer la relation de taille entre la température définie et la température d'environnement intérieur courante et la relation de taille entre la teneur en humidité définie et la teneur en humidité courante ; et à réguler, en fonction des résultats de détermination, de la température de point de rosée courante et de la température de bobine d'échangeur de chaleur intérieur courante, la température et l'humidité du climatiseur. Le procédé de commande selon l'invention permet de répondre simultanément aux exigences de confort de l'utilisateur quant à la température et à l'humidité, et de réduire les coûts.
PCT/CN2018/093146 2017-11-29 2018-06-27 Climatiseur et procédé et dispositif de commande associés WO2019105028A1 (fr)

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