CN114135977B - Heating control method and device of air conditioner and air conditioner - Google Patents

Heating control method and device of air conditioner and air conditioner Download PDF

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Publication number
CN114135977B
CN114135977B CN202111389345.7A CN202111389345A CN114135977B CN 114135977 B CN114135977 B CN 114135977B CN 202111389345 A CN202111389345 A CN 202111389345A CN 114135977 B CN114135977 B CN 114135977B
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China
Prior art keywords
threshold
outdoor
relative humidity
preset
control mode
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CN202111389345.7A
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CN114135977A (en
Inventor
秦宪
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Aux Air Conditioning Co Ltd
Ningbo Aux Electric Co Ltd
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Aux Air Conditioning Co Ltd
Ningbo Aux Electric Co Ltd
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Priority to CN202111389345.7A priority Critical patent/CN114135977B/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/41—Defrosting; Preventing freezing
    • F24F11/42—Defrosting; Preventing freezing of outdoor units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/87—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units
    • F24F11/871—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units by controlling outdoor fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/88—Electrical aspects, e.g. circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F24F2110/12—Temperature of the outside air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/20—Heat-exchange fluid temperature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Thermal Sciences (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention provides a heating control method and device of an air conditioner and the air conditioner; wherein the method comprises the following steps: acquiring detection parameters of the air conditioner during heating operation; wherein, the detection parameters include: outdoor ambient temperature T Dry ball Outdoor relative humidity RH and heat exchanger coil temperature T Coiled pipe The method comprises the steps of carrying out a first treatment on the surface of the Analyzing the relation between the detection parameters and the preset parameter threshold values, and generating a corresponding control mode according to the analysis result; the control mode comprises control actions corresponding to the chassis electric heating belt, the compressor, the indoor fan, the outdoor fan and the electronic expansion valve respectively; the air conditioner is controlled to operate according to the control mode. In the mode, the corresponding control mode is generated through the relation between the detection parameter and the preset parameter threshold value, so that the chassis electric heating belt, the compressor, the indoor fan, the outdoor fan and the electronic expansion valve are respectively and accurately controlled, the possibility of frosting of the heat exchanger is reduced, the chassis deicing efficiency is improved, and the method has good practical value.

Description

Heating control method and device of air conditioner and air conditioner
Technical Field
The invention relates to the technical field of air conditioners, in particular to a heating control method and device of an air conditioner and the air conditioner.
Background
When the air conditioner is in heating operation and the outdoor environment temperature is low, water vapor in the air can form condensed water precipitation on the heat exchanger of the outdoor unit. When the condensed water is lower than 0 ℃, the condensed water can be gradually frozen, and when the condensed water is serious, the ice blocks can block the drain holes of the chassis of the air conditioner, so that the chassis is not smoothly drained, and the frosting of the heat exchanger can be aggravated, thereby seriously affecting the service performance of the air conditioner. Based on the above, an electric heating belt is additionally arranged on the chassis of the existing air conditioner and is used for melting ice cubes on the chassis and accelerating drainage of the chassis.
The control mode of the existing chassis electric heating belt mainly comprises the following two modes: (1) When the air conditioner is in a heating state, whether the chassis is frozen or not, the chassis electric heating belt is forcedly started, so that the power consumption of the air conditioner is serious, and the service life of the chassis electric heating belt is influenced; (2) By detecting the outdoor environment temperature and setting the on or off state of the chassis electric heating belt, the higher the relative humidity is, the higher the water vapor content in the air is, the higher the possibility of chassis ice blockage is, and the frosting of the heat exchanger is aggravated, so that the service performance of the air conditioner is seriously affected. Therefore, how to reduce frosting of the heat exchanger and improve the chassis deicing efficiency is a problem to be solved in the heating operation of the air conditioner.
Disclosure of Invention
Therefore, the invention aims to provide a heating control method and device for an air conditioner, the possibility of frosting of a heat exchanger is reduced, the chassis deicing efficiency is improved, and the air conditioner has good practical value.
In a first aspect, an embodiment of the present invention provides a heating control method for an air conditioner, which is applied to a controller of the air conditioner, where the air conditioner further includes a compressor, an indoor fan, an outdoor fan, an electronic expansion valve, and a chassis electric heating belt that are communicatively connected to the controller; the method comprises the following steps: acquiring detection parameters of the air conditioner during heating operation; wherein, the detection parameters include: outdoor ambient temperature T Dry ball Outdoor relative humidity RH and heat exchanger coil temperature T Coiled pipe The method comprises the steps of carrying out a first treatment on the surface of the Analyzing the relation between the detection parameters and the preset parameter threshold values, and generating a corresponding control mode according to the analysis result; the control mode comprises control actions corresponding to the chassis electric heating belt, the compressor, the indoor fan, the outdoor fan and the electronic expansion valve respectively; the air conditioner is controlled to operate according to the control mode.
According to the heating control method of the air conditioner, the outdoor environment temperature and the outdoor relative humidity are fully considered, and the corresponding control modes are generated through the relation between the detection parameters and the preset parameter threshold values, so that the chassis electric heating belt, the compressor, the indoor fan, the outdoor fan and the electronic expansion valve are respectively and accurately controlled, the possibility of frosting of the heat exchanger is reduced, the chassis deicing efficiency is improved, and the method has good practical value.
Preferably, the embodiment of the present invention provides a first possible implementation manner of the first aspect, wherein the preset parameter threshold includes a preset dry bulb temperature threshold, a preset relative humidity threshold, and a preset coil temperature threshold; the preset relative humidity threshold comprises a first relative humidity threshold and a second relative humidity threshold, the first relative humidity threshold is larger than the second relative humidity threshold, and the preset coil temperature threshold comprises a first coil temperature threshold interval; the step of analyzing the relation between the detection parameter and the preset parameter threshold and generating a corresponding control mode according to the analysis result comprises the following steps: if the outdoor ambient temperature T Dry ball The method comprises the steps that the outdoor relative humidity RH is not smaller than a first relative humidity threshold value and is not larger than a preset dry bulb temperature threshold value, and a first control mode is generated; wherein the first control mode includes performing the following actions: starting an electric heating belt of the chassis; reducing the frequency of the compressor to 75% of the current operating frequency; the rotating speed of the indoor fan is reduced to 75% of the current rotating speed; the rotating speed of the outdoor fan is increased to be the highest rotating speed; according to the temperature T of the coil pipe of the heat exchanger Coiled pipe And adjusting the opening of the electronic expansion valve in a first coil temperature threshold interval.
Preferably, the embodiment of the present invention provides a second possible implementation manner of the first aspect, wherein the preset coil temperature threshold value includes a second coil temperature threshold value interval; the step of analyzing the relation between the detection parameter and the preset parameter threshold and generating a corresponding control mode according to the analysis result, further comprises the following steps: if the outdoor ambient temperature T Dry ball The outdoor relative humidity RH is smaller than the first relative humidity threshold and is not smaller than the second relative humidity threshold, and a second control mode is generated; wherein the second control mode includes performing the following actions: starting an electric heating belt of the chassis, and closing a designated time length after each first time length is operated; reducing the frequency of the compressor to 80% of the current operating frequency; the rotating speed of the indoor fan is reduced to 80% of the current rotating speed; the rotating speed of the outdoor fan is improved to be 95% of the highest rotating speed; according to the temperature T of the coil pipe of the heat exchanger Coiled pipe And a second diskAnd adjusting the opening of the electronic expansion valve in a pipe temperature threshold interval.
Preferably, the embodiment of the present invention provides a third possible implementation manner of the first aspect, wherein the preset coil temperature threshold includes a third coil temperature threshold interval; analyzing the relation between the detection parameter and the preset parameter threshold value, and generating a corresponding control mode according to the analysis result, and further comprising the steps of: if the outdoor ambient temperature T Dry ball The outdoor relative humidity RH is not greater than a preset dry bulb temperature threshold value, and is less than a second relative humidity threshold value, a third control mode is generated; wherein the third control mode includes performing the following actions: turning on an electric heating belt of the chassis, and turning off a designated time after each second time period is operated; reducing the frequency of the compressor to 85% of the current operating frequency; reducing the rotating speed of the indoor fan to 85% of the current rotating speed; the rotating speed of the outdoor fan is improved to 90% of the highest rotating speed; according to the temperature T of the coil pipe of the heat exchanger Coiled pipe And adjusting the opening of the electronic expansion valve in a third coil temperature threshold interval.
Preferably, the embodiment of the present invention provides a fourth possible implementation manner of the first aspect, where the first coil temperature threshold interval includes a first coil temperature threshold and a second coil temperature threshold, and the first coil temperature threshold is greater than the second coil temperature threshold; above-mentioned according to heat exchanger coil temperature T Coiled pipe And a step of adjusting the opening of the electronic expansion valve in a first coil temperature threshold section, comprising: if the heat exchanger coil temperature T Coiled pipe The method comprises the steps of adjusting the opening of an electronic expansion valve according to a preset interval and a first opening increment when the temperature of the electronic expansion valve is larger than a first coil temperature threshold; if the heat exchanger coil temperature T Coiled pipe The opening of the electronic expansion valve is adjusted and controlled according to a preset interval and a second opening increment when the temperature of the electronic expansion valve is not greater than the first coil temperature threshold and is greater than the second coil temperature threshold; if the heat exchanger coil temperature T Coiled pipe The temperature threshold value of the second coil pipe is not larger than the temperature threshold value of the second coil pipe, and the electronic expansion valve is controlled to keep the current opening; wherein the first opening increment is greater than the second opening increment.
Preferably, the embodiment of the present invention provides a fifth possible implementation manner of the first aspect, where the first opening increment is 10 degrees, and the second opening increment is 5 degrees.
Preferably, the embodiment of the present invention provides a sixth possible implementation manner of the first aspect, where the method further includes: acquiring detection parameters of the air conditioner during defrosting operation; analyzing the relation between the detection parameter and the preset parameter threshold value during defrosting operation, and generating a corresponding electric heating control mode according to the analysis result; and controlling the chassis electric heating belt to run according to the electric heating control mode until defrosting is finished.
Preferably, the embodiment of the present invention provides a seventh possible implementation manner of the first aspect, where the step of obtaining a detection parameter in a heating operation of an air conditioner includes: acquiring outdoor ambient temperature T Dry ball Coil temperature T of heat exchanger Coiled pipe And an outdoor ambient wet bulb temperature T Wet ball The method comprises the steps of carrying out a first treatment on the surface of the According to the outdoor environment temperature T Dry ball And an outdoor ambient wet bulb temperature T Wet ball Searching in a preset humidity lookup table, and taking the searched humidity as the outdoor relative humidity RH.
In a second aspect, an embodiment of the present invention further provides a heating control device of an air conditioner, which is applied to a controller of the air conditioner, where the air conditioner further includes a compressor, an indoor fan, an outdoor fan, an electronic expansion valve, and a chassis electric heating belt that are communicatively connected with the controller; the device comprises: the parameter acquisition module is used for acquiring detection parameters of the air conditioner during heating operation; wherein, the detection parameters include: outdoor ambient temperature T Dry ball Outdoor relative humidity RH and heat exchanger coil temperature T Coiled pipe The method comprises the steps of carrying out a first treatment on the surface of the The analysis generating module is used for analyzing the relation between the detection parameters and the preset parameter threshold value and generating a corresponding control mode according to the analysis result; the control mode comprises control actions corresponding to the chassis electric heating belt, the compressor, the indoor fan, the outdoor fan and the electronic expansion valve respectively; and the control operation module is used for controlling the air conditioner to operate according to the control mode.
In a third aspect, an embodiment of the present invention further provides an air conditioner, including a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the steps of the method of the first aspect.
The embodiment of the invention has the following beneficial effects:
the embodiment of the invention provides an air conditioner heating control method and device and an air conditioner, wherein the air conditioner comprises the following steps of firstly obtaining an outdoor environment temperature T Dry ball Outdoor relative humidity RH and heat exchanger coil temperature T Coiled pipe Is a detection parameter of (a); then analyzing the relation between the detection parameters and the preset parameter threshold values, and generating a corresponding control mode according to the analysis result; and controlling the air conditioner to operate according to the control mode. In the mode, the outdoor environment temperature and the outdoor relative humidity are fully considered, and the corresponding control mode is generated through the relation between the detection parameter and the preset parameter threshold value, so that the chassis electric heating belt, the compressor, the indoor fan, the outdoor fan and the electronic expansion valve are respectively and accurately controlled, the possibility of frosting of the heat exchanger is reduced, the chassis deicing efficiency is improved, and the method has good practical value.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
In order to make the above objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of an air conditioner according to an embodiment of the present invention;
fig. 2 is a flowchart of a heating control method of an air conditioner according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a heating control device of an air conditioner according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another air conditioner according to an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order to facilitate understanding of the present embodiment, a detailed description is first provided below of a heating control method for an air conditioner according to an embodiment of the present invention. As shown in fig. 1, the air conditioner 1 includes an indoor unit 10 and an outdoor unit 20, wherein the indoor unit 10 includes a controller 11 and an indoor fan 12, and the outdoor unit 20 includes a compressor 21, an outdoor fan 22, an outdoor heat exchanger 23, an electronic expansion valve 24, and a chassis electric heating belt 25; the inner fan 12, the compressor 21, the outdoor fan 22, the outdoor heat exchanger 23, the electronic expansion valve 24 and the chassis electric heating belt 25 are all in communication connection with the controller 11, so that the controller 11 respectively performs accurate control on the inner fan 12, the compressor 21, the outdoor fan 22, the outdoor heat exchanger 23, the electronic expansion valve 24 and the chassis electric heating belt 25 according to detection parameters and preset parameter thresholds when the air conditioner heats and operates, thereby realizing the possibility of reducing frosting of the heat exchanger and improving the chassis deicing efficiency.
It should be noted that, the indoor unit 10 and the outdoor unit 20 further include other structures, such as an indoor heat exchanger, an auxiliary electric heater, a gas-liquid separator, a four-way valve, and the like, and the connection relationship of the structures may refer to the existing air conditioner, and the embodiments of the present invention are not described in detail herein.
In addition, the air conditioner is further provided with a remote controller or remote control equipment and the like, and in practical application, the remote controller or the remote control equipment is in communication connection with the controller, a user can control the opening or closing of the air conditioner and the like through the remote controller or the remote control equipment, and can also set a temperature, an operation mode and the like, wherein the operation mode comprises a heating mode, a refrigerating mode, a dehumidifying mode, a defrosting mode and the like, and the operation mode can be specifically set according to practical situations.
Based on the above air conditioner, the embodiment of the invention provides a heating control method of an air conditioner, wherein an execution main body is a controller, as shown in fig. 2, and the method comprises the following steps:
step S202, acquiring detection parameters of an air conditioner during heating operation;
wherein, the detection parameters include: outdoor ambient temperature T Dry ball Outdoor relative humidity RH and heat exchanger coil temperature T Coiled pipe The method comprises the steps of carrying out a first treatment on the surface of the Specifically, the outdoor ambient temperature T is first obtained Dry ball Coil temperature T of heat exchanger Coiled pipe And an outdoor ambient wet bulb temperature T Wet ball The method comprises the steps of carrying out a first treatment on the surface of the Then according to the outdoor environment temperature T Dry ball And an outdoor ambient wet bulb temperature T Wet ball Searching in a preset humidity lookup table, and taking the searched humidity as the outdoor relative humidity RH, for example, T Dry ball At 7 ℃, T Wet ball Searching in a preset humidity lookup table at 6 ℃ to obtain the outdoor relative humidity of 86.6%.
In order to obtain the above detection parameters, the air conditioner is further provided with a temperature sensing device, which includes: an outdoor environment dry bulb temperature sensing device, an outdoor environment wet bulb temperature sensing device and a heat exchanger coil temperature sensing device; wherein, outdoor environment dry bulb temperature sensing device is used for detecting outdoor environment dry bulb T Dry ball I.e. outdoor environment temperature, the outdoor environment wet bulb temperature sensing device is used for detecting the outdoor environment wet bulb temperature T Wet ball The heat exchanger coil temperature sensing device is used for detecting the temperature T of the heat exchanger coil Coiled pipe . In practical application, the temperature sensing device can be a resistance thermometer (such as thermistor and humidity sensor) with resistance value changed according to outdoor environment temperature and outdoor environment humidity to measure outdoor environment temperature T Dry ball Wet bulb temperature T of outdoor environment Wet ball And heat exchanger plateTube temperature T Coiled pipe 。
In addition, the fan blade of the outdoor fan rotates to generate negative pressure, outdoor air is sucked into the air cavity of the outdoor unit of the air conditioner, the outdoor environment dry bulb temperature sensing device and the outdoor environment wet bulb temperature sensing device can be arranged at the air inlet of the outdoor unit, and when the outdoor air flows into the air cavity of the outdoor unit, the outdoor air flows through the two temperature sensing devices, so that the outdoor environment temperature T is detected Dry ball And an outdoor ambient wet bulb temperature T Wet ball . And the temperature sensing device of the heat exchanger coil pipe temperature should be selected at the lowest position of the whole heat exchanger temperature, otherwise, the temperature T of the heat exchanger coil pipe is detected during the heating operation of the air conditioner Coiled pipe The temperature is not the lowest temperature, which may cause the heat exchanger to be full of frost, but the air conditioner still does not enter defrosting logic, so that the service performance of the air conditioner is seriously affected, and the experience of users is reduced.
Step S204, analyzing the relation between the detection parameters and the preset parameter threshold values, and generating a corresponding control mode according to the analysis result; the control mode comprises control actions corresponding to the chassis electric heating belt, the compressor, the indoor fan, the outdoor fan and the electronic expansion valve respectively;
specifically, in a normal heating mode, in order to reduce frosting of the heat exchanger of the outdoor unit and accelerate deicing of the chassis, a common method includes: (1) when the chassis is frozen, starting an electric heating belt of the chassis to perform deicing; (2) the operation frequency of the compressor is reduced, the evaporation pressure of the air conditioning system is improved, and the surface temperature of the heat exchanger of the outdoor unit is increased so as to reduce frosting; (3) the rotating speed of an indoor fan is reduced, the air supply quantity of the indoor unit is reduced, the heat exchange quantity of the indoor unit is reduced, the evaporating temperature of the air conditioner is increased, and frosting is reduced; (4) the rotating speed of the fan of the outdoor unit is increased, the air supply quantity of the outdoor unit is increased, the heat exchange quantity of the outdoor unit is increased, and the evaporating temperature of the air conditioner is increased so as to reduce frosting; (5) the opening degree of the throttling device (namely the electronic expansion valve) of the outdoor unit is properly increased to improve the mass flow rate of the refrigerant, the evaporation pressure of the air conditioning system and the surface temperature of the heat exchanger of the outdoor unit so as to reduce frosting, therefore, in order to reduce frosting of the heat exchanger and quick deicing of a chassis, the controller analyzes the relation between the detection parameter and the threshold value of the preset parameter and generates a corresponding control mode according to the analysis result; the control mode comprises control actions respectively corresponding to the chassis electric heating belt, the compressor, the indoor fan, the outdoor fan and the electronic expansion valve, namely, the chassis electric heating belt, the compressor, the indoor fan, the outdoor fan and the electronic expansion valve are respectively controlled accurately, and compared with the control of a single structure, the control mode further reduces the possibility of frosting of the heat exchanger through the combined accurate control of a plurality of structures, so that the efficiency of deicing the chassis is improved.
The preset parameter threshold comprises a preset dry bulb temperature threshold, a preset relative humidity threshold and a preset coil temperature threshold; the preset relative humidity threshold comprises a first relative humidity threshold and a second relative humidity threshold, and the first relative humidity threshold is larger than the second relative humidity threshold, so that the detection parameter and the preset parameter threshold are analyzed, a plurality of different analysis results can be obtained, and different control modes are generated.
For ease of understanding, this is illustrated herein. The preset dry bulb temperature threshold is 0 ℃, the first relative humidity threshold is 80%, the second relative humidity threshold is 50%, the first opening increment is 10 degrees, and the second opening increment is 5 degrees. Specifically including but not limited to the following control modes:
(1) The preset coil temperature threshold comprises a first coil temperature threshold interval such as (-1 deg.C, 0 deg.C)]The method comprises the steps of carrying out a first treatment on the surface of the In particular, if the outdoor ambient temperature T Dry ball Not greater than the preset dry bulb temperature threshold, and the outdoor relative humidity RH is not less than the first relative humidity threshold, i.e. when T Dry ball When the temperature is less than or equal to 0 ℃ and RH is more than or equal to 80%, a first control mode is generated; wherein the first control mode includes performing the following actions: (1) the chassis electric heating belt is started and not closed so as to prevent the chassis from icing and aggravate frosting of the heat exchanger; (2) reducing the frequency of the compressor to 75% of the current operating frequency; if the current running frequency of the 1.5P air conditioner is 90Hz, the current running frequency is reduced to 67.5Hz; (3) the rotating speed of the indoor fan is reduced to 75% of the current rotating speed; if the current running rotating speed of the 1.5P air conditioner is 1300r/min, the current running rotating speed is reduced to 975r/min; (4) the rotating speed of the outdoor fan is increased to be the highest rotating speed; such as 1.5P air conditioner is about 1100r/min; (5) according to the temperature T of the coil pipe of the heat exchanger Coiled pipe The opening of the electronic expansion valve is adjusted in a first coil temperature threshold interval; wherein the first coil temperature threshold interval comprises a first coil temperature threshold of 0 ℃ and a second coil temperature threshold of-1 ℃: if the heat exchanger coil temperature T Coiled pipe Greater than a first coil temperature threshold, T Coiled pipe Adjusting the opening of the electronic expansion valve according to preset intervals and the first opening increment, wherein the opening is increased by 10 degrees every 1 min; if the heat exchanger coil temperature T Coiled pipe Is not greater than the first coil temperature threshold and is greater than the second coil temperature threshold, i.e. -1℃ < T Coiled pipe The opening of the electronic expansion valve is adjusted and controlled according to a preset interval and a second opening increment, and the opening is increased by 5 degrees every 1 min; if the heat exchanger coil temperature T Coiled pipe Not greater than the second coil temperature threshold, T Coiled pipe And controlling the electronic expansion valve to keep the current opening at the temperature of less than or equal to minus 1 ℃.
(2) The preset coil temperature threshold includes a second coil temperature threshold interval such as [1 ℃,2 DEG C]The method comprises the steps of carrying out a first treatment on the surface of the Specifically: if the outdoor ambient temperature T Dry ball Not greater than the preset dry bulb temperature threshold, the outdoor relative humidity RH is less than the first relative humidity threshold and not less than the second relative humidity threshold, i.e. when T Dry ball When the temperature is less than or equal to 0 ℃, RH is more than or equal to 50% and less than 80%, a second control mode is generated; wherein the second control mode includes performing the following actions: (1) starting an electric heating belt of the chassis, and closing a designated time length after each first time length is operated; for example, the heat exchanger is closed for 5 minutes after running for 60 minutes, so that the chassis is prevented from icing, and frosting of the heat exchanger is aggravated; meanwhile, the long-time operation of the chassis electric heating belt is reduced, so that the service life of the chassis electric heating belt is shortened; (2) reducing the frequency of the compressor to 80% of the current operating frequency; if the current running frequency of the 1.5P air conditioner is 90Hz, the current running frequency is reduced to 72Hz; (3) the rotating speed of the indoor fan is reduced to 80% of the current rotating speed; if the current running rotating speed of the 1.5P air conditioner is 1300r/min, the current running rotating speed is reduced to 1040r/min; (4) the rotating speed of the outdoor fan is improved to be 95% of the highest rotating speed; if the 1.5P air conditioner is about 1100r/min, the temperature is adjusted to 1045r/min; (5) according to the temperature T of the coil pipe of the heat exchanger Coiled pipe And adjusting the opening of the electronic expansion valve in a second coil temperature threshold interval; in particular, reference is made to the first disc described aboveProcess of adjustment of tube temperature threshold interval, e.g. if T Coiled pipe Increasing the temperature by 10 degrees every 1min at the temperature of more than 2 ℃; if 1 ℃ is less than T Coiled pipe The temperature is less than or equal to 2 ℃, and the temperature is increased by 5 ℃ every 1 min; if T Coiled pipe And controlling the electronic expansion valve to keep the current opening degree at the temperature of less than or equal to 1 ℃.
(3) The preset coil temperature threshold includes a third coil temperature threshold interval such as [3 ℃,4 DEG C]The method comprises the steps of carrying out a first treatment on the surface of the Specifically: if the outdoor ambient temperature T Dry ball Not greater than the preset dry bulb temperature threshold, and the outdoor relative humidity RH is less than the second relative humidity threshold, i.e. when T Dry ball When the temperature is less than or equal to 0 ℃ and RH is less than 50%, a third control mode is generated; wherein the third control mode includes performing the following actions: (1) turning on an electric heating belt of the chassis, and turning off a designated time after each second time period is operated; if the heat exchanger is closed for 5 minutes after running for 50 minutes, the chassis is prevented from icing, and frosting of the heat exchanger is aggravated; meanwhile, the long-time operation of the chassis electric heating belt is reduced, so that the service life of the chassis electric heating belt is shortened; (2) reducing the frequency of the compressor to 85% of the current operating frequency; if the current running frequency of the 1.5P air conditioner is 90Hz, the current running frequency is reduced to 76.5Hz; (3) reducing the rotating speed of the indoor fan to 85% of the current rotating speed; if the current running rotating speed of the 1.5P air conditioner is 1300r/min, the current running rotating speed is reduced to 1105r/min; (4) the rotating speed of the outdoor fan is improved to 90% of the highest rotating speed; if the 1.5P air conditioner is about 1100r/min, the temperature is adjusted to 990r/min; (5) according to the temperature T of the coil pipe of the heat exchanger Coiled pipe And adjusting the opening of the electronic expansion valve in a third coil temperature threshold interval; i.e. if T Coiled pipe Increasing the temperature by 10 degrees every 1min at a temperature of more than 4 ℃; if 3 ℃ is less than T Coiled pipe The temperature is less than or equal to 4 ℃, and the temperature is increased by 5 ℃ every 1 min; if T Coiled pipe And controlling the electronic expansion valve to keep the current opening degree at the temperature of less than or equal to 3 ℃.
(4) The preset coil temperature threshold includes a fourth coil temperature threshold interval such as [5 ℃,6 DEG C]The method comprises the steps of carrying out a first treatment on the surface of the Specifically: if the outdoor ambient temperature T Dry ball Is greater than a preset dry bulb temperature threshold, and the outdoor relative humidity RH is not less than a first relative humidity threshold, i.e. when T Dry ball When the temperature is more than 0 ℃ and RH is more than or equal to 80%, generating a fourth control mode; wherein the fourth control mode includes performing the following actions: (1) turning on an electric heating belt of the chassis, and turning off a designated time after each third time is operated; such as eachAfter 40min of operation, the heat exchanger is closed for 5min, so that the chassis is prevented from icing, and frosting of the heat exchanger is aggravated; meanwhile, the long-time operation of the chassis electric heating belt is reduced, so that the service life of the chassis electric heating belt is shortened; (2) reducing the frequency of the compressor to 90% of the current operating frequency, and if the current operating frequency of the 1.5P air conditioner is 90Hz, reducing the frequency to 81Hz; (3) the rotating speed of the indoor fan is reduced to 90% of the current rotating speed, if the current operating rotating speed of the 1.5P air conditioner is 1300r/min, the rotating speed is reduced to 1170r/min; (4) the rotating speed of the outdoor fan is improved to be 85% of the highest rotating speed; if the 1.5P air conditioner is about 1100r/min, the temperature is adjusted to 935r/min; (5) according to the temperature T of the coil pipe of the heat exchanger Coiled pipe And a fourth coil temperature threshold interval, adjusting the opening of the electronic expansion valve; i.e. if T Coiled pipe Increasing the temperature by 10 degrees every 1min at a temperature of more than 6 ℃; if 5 ℃ is less than T Coiled pipe The temperature is less than or equal to 6 ℃, and the temperature is increased by 5 ℃ every 1 min; if T Coiled pipe And controlling the electronic expansion valve to keep the current opening degree at the temperature of less than or equal to 5 ℃.
(5) The preset coil temperature threshold includes a fifth coil temperature threshold interval such as [ 7deg.C, 8deg.C ]]The method comprises the steps of carrying out a first treatment on the surface of the Specifically: if the outdoor ambient temperature T Dry ball The outdoor relative humidity RH is smaller than the first relative humidity threshold and is not smaller than the second relative humidity threshold, namely when T is larger than the preset dry bulb temperature threshold Dry ball Generating a fifth control mode when the temperature is more than 0 ℃ and the RH is more than or equal to 50% and less than 80%; wherein the fifth control mode includes performing the following actions: (1) starting an electric heating belt of the chassis, and closing a designated time period after each running for a fourth time period; if the heat exchanger is closed for 5 minutes after running for 30 minutes, the chassis is prevented from icing, and frosting of the heat exchanger is aggravated; meanwhile, the long-time operation of the chassis electric heating belt is reduced, so that the service life of the chassis electric heating belt is shortened; (2) reducing the frequency of the compressor to 95% of the current operating frequency, and if the current operating frequency of the 1.5P air conditioner is 90Hz, reducing the frequency to 85.5Hz; (3) the rotating speed of the indoor fan is reduced to 95% of the current rotating speed, if the current operating rotating speed of the 1.5P air conditioner is 1300r/min, the rotating speed is reduced to 1235r/min; (4) the rotating speed of the outdoor fan is improved to 80% of the highest rotating speed; if the 1.5P air conditioner is about 1100r/min, the temperature is adjusted to 880r/min; (5) according to the temperature T of the coil pipe of the heat exchanger Coiled pipe And a fifth coil temperature threshold interval, adjusting the opening of the electronic expansion valve; i.e. if T Coiled pipe At > 8deg.C, 10 degree increase per 1minThe method comprises the steps of carrying out a first treatment on the surface of the If 7 ℃ is less than T Coiled pipe The temperature is less than or equal to 8 ℃, and the temperature is increased by 5 ℃ every 1 min; if T Coiled pipe And controlling the electronic expansion valve to keep the current opening degree at the temperature of less than or equal to 7 ℃.
(6) The preset coil temperature threshold includes a sixth coil temperature threshold interval such as [9 ℃,10℃ ]]The method comprises the steps of carrying out a first treatment on the surface of the Specifically: if the outdoor ambient temperature T Dry ball Is greater than a preset dry bulb temperature threshold, and the outdoor relative humidity RH is less than a second relative humidity threshold, i.e. when T Dry ball When the temperature is more than 0 ℃ and RH is less than 50%, a sixth control mode is generated; wherein the sixth control mode includes performing the following actions: (1) under a normal heating mode, the chassis electric heating belt is not started, so that the long-time operation of the chassis electric heating belt is avoided, and the service life of the chassis electric heating belt is shortened; (2) controlling the frequency of the compressor to be kept at the current operating frequency, if the current operating frequency of the 1.5P air conditioner is 90Hz, continuously keeping the operation at 90 Hz; (3) controlling the rotating speed of the indoor fan to be kept at the current rotating speed, and if the current operating rotating speed of the 1.5P air conditioner is 1300r/min, keeping 1300r/min to operate; (4) controlling the rotating speed of the outdoor fan to be kept at the current rotating speed; (5) the opening degree of the electronic expansion valve is controlled to be kept at the current opening degree.
In summary, under the normal heating mode of the air conditioner, a corresponding control mode is determined according to analysis results of the detection parameters and the preset parameter threshold value, so that accurate control of the opening/closing of the chassis electric heating belt, the running frequency of the compressor, the rotating speed of the indoor fan, the rotating speed of the outdoor fan, the opening of the electronic expansion valve and the like is realized according to the control mode; and in each control mode, the controller simultaneously controls the compressor, the indoor fan, the outdoor fan and the electronic expansion valve of the chassis electric heating belt according to corresponding execution actions, so that the purposes of reducing frosting of the heat exchanger and rapidly deicing the chassis are realized.
Step S206, controlling the air conditioner to operate according to the control mode.
According to the air conditioner heating control method provided by the embodiment of the invention, the outdoor environment temperature and the outdoor relative humidity are fully considered, and the corresponding control modes are generated through the relation between the detection parameters and the preset parameter threshold values, so that the chassis electric heating belt, the compressor, the indoor fan, the outdoor fan and the electronic expansion valve are respectively and accurately controlled, the possibility of frosting of the heat exchanger is reduced, the chassis deicing efficiency is improved, and the air conditioner heating control method has good practical value.
Further, when the outdoor unit of the air conditioner is full of the frost layer, the heat exchange capacity of the outdoor unit of the air conditioner is greatly reduced, and the comfort of a user is affected. At this time, defrosting control, that is, a defrosting mode, is required for the outdoor unit frost layer. When the air conditioner enters a defrosting mode, the frost layer can be melted into water and is discharged through the chassis drain hole, but if the chassis drain hole is blocked by the ice layer at the moment, the water cannot be discharged and is always stored on the chassis, so that the heat exchanger can be frosted more quickly, and the heating capacity of the air conditioner is directly affected.
Thus, when the heat exchanger coil temperature T is detected Coiled pipe When the temperature is too low, the air conditioner enters a defrosting mode when the requirement of the air conditioner for entering defrosting is met. In the defrosting process, the chassis electric heating belt is accurately controlled. Specifically, the method further comprises: acquiring detection parameters of the air conditioner during defrosting operation; analyzing the relation between the detection parameter and the preset parameter threshold value during defrosting operation, and generating a corresponding electric heating control mode according to the analysis result; and controlling the chassis electric heating belt to run according to the electric heating control mode until defrosting is finished.
For ease of understanding, this is illustrated herein. Wherein the preset dry bulb temperature threshold is 0 ℃, the first relative humidity threshold is 80%, the second relative humidity threshold is 50%, and the electric heating control modes specifically include, but are not limited to, the following modes:
(1) When T is Dry ball When the temperature is less than or equal to 0 ℃ and RH is more than or equal to 80%, the electric heating control mode specifically comprises: starting an electric heating belt of the chassis during defrosting, and continuously operating the electric heating belt of the chassis for 6 minutes after defrosting is finished, so as to ensure that ice layers of the chassis are completely melted;
(2) When T is Dry ball The electric heating control mode specifically comprises the following steps of: starting an electric heating belt of the chassis during defrosting, and continuously operating the electric heating belt of the chassis for 5min after defrosting is finished, so as to ensure that an ice layer of the chassis is completely melted;
(3) When T is Dry ball Specific package with electric heating control mode when RH is less than 50% and less than 0 DEG CThe method comprises the following steps: starting an electric heating belt of the chassis during defrosting, and continuously operating the electric heating belt of the chassis for 4min after defrosting is finished to ensure that an ice layer of the chassis is completely melted;
(4) When T is Dry ball When the temperature is more than 0 ℃ and RH is more than or equal to 80%, the electric heating control mode specifically comprises: starting an electric heating belt of the chassis during defrosting, and continuously operating the electric heating belt of the chassis for 3min after defrosting is finished to ensure that an ice layer of the chassis is completely melted;
(5) When T is Dry ball When the temperature is more than 0 ℃, RH is more than or equal to 50% and less than 80%, the electric heating control mode specifically comprises: starting an electric heating belt of the chassis during defrosting, and continuously operating the electric heating belt of the chassis for 2 minutes after defrosting is finished to ensure that an ice layer of the chassis is completely melted;
(6) When T is Dry ball When the temperature is more than 0 ℃ and the RH is less than 50%, the electric heating control mode specifically comprises: and starting the chassis electric heating belt in the defrosting period, and continuously operating the chassis electric heating belt for 1min after defrosting is finished, so as to ensure that the ice layer of the chassis is completely melted.
Therefore, in the defrosting mode, through analyzing the relation between the detection parameter and the preset parameter threshold value during defrosting operation and generating a corresponding electric heating control mode according to the analysis result, the operation of the chassis electric heating belt is accurately controlled according to the electric heating control mode, the chassis deicing efficiency is improved, and the possibility of frosting of the heat exchanger is reduced.
After the electric heating control modes are finished, the controller executes a control mode generation process, namely after the ice layer of the chassis is completely melted, the controller analyzes the relation between the detection parameters and the preset parameter threshold value, generates a corresponding control mode according to the analysis result, and respectively and accurately controls the chassis electric heating belt, the compressor, the indoor fan, the outdoor fan and the electronic expansion valve according to the control mode.
In summary, the heating control method for the air conditioner provided by the embodiment of the invention is based on the outdoor environment temperature T Dry ball Outdoor relative humidity RH and heat exchanger coil temperature T Coiled pipe Realizes the accurate control of the chassis electric heating belt, the compressor, the indoor fan, the outdoor fan and the electronic expansion valve, reduces the possibility of frosting of the heat exchanger, improves the chassis deicing efficiency,the use comfort of the air conditioner and the operation reliability of the chassis electric heating belt are also improved, so that the experience of a user is improved.
Corresponding to the above method embodiment, the embodiment of the present invention further provides a heating control device of an air conditioner, which is applied to a controller of the air conditioner, as shown in fig. 3, and the device includes: a parameter acquisition module 31, an analysis generation module 32 and a control operation module 33; wherein, the functions of each module are as follows:
a parameter obtaining module 31, configured to obtain a detection parameter during heating operation of the air conditioner; wherein, the detection parameters include: outdoor ambient temperature T Dry ball Outdoor relative humidity RH and heat exchanger coil temperature T Coiled pipe ；
The analysis generating module 32 is configured to analyze a relationship between the detection parameter and a preset parameter threshold, and generate a corresponding control mode according to an analysis result; the control mode comprises control actions corresponding to the chassis electric heating belt, the compressor, the indoor fan, the outdoor fan and the electronic expansion valve respectively;
And a control operation module 33 for controlling the air conditioner to operate according to the control mode.
According to the air conditioner heating control device provided by the embodiment of the invention, the outdoor environment temperature and the outdoor relative humidity are fully considered, and the corresponding control modes are generated through the relation between the detection parameters and the preset parameter threshold values, so that the chassis electric heating belt, the compressor, the indoor fan, the outdoor fan and the electronic expansion valve are respectively and accurately controlled, the possibility of frosting of the heat exchanger is reduced, the chassis deicing efficiency is improved, and the air conditioner heating control device has good practical value.
In one possible implementation manner, the preset parameter threshold includes a preset dry bulb temperature threshold, a preset relative humidity threshold and a preset coil temperature threshold; the preset relative humidity threshold comprises a first relative humidity threshold and a second relative humidity threshold, the first relative humidity threshold is larger than the second relative humidity threshold, and the preset coil temperature threshold comprises a first coil temperature threshold interval; the analysis generation module 32 is further configured to: if the outdoor ambient temperature T Dry ball Not greater than a preset dry bulb temperature thresholdAnd, if the outdoor relative humidity RH is not less than the first relative humidity threshold, generating a first control mode; wherein the first control mode includes performing the following actions: starting an electric heating belt of the chassis; reducing the frequency of the compressor to 75% of the current operating frequency; the rotating speed of the indoor fan is reduced to 75% of the current rotating speed; the rotating speed of the outdoor fan is increased to be the highest rotating speed; according to the temperature T of the coil pipe of the heat exchanger Coiled pipe And adjusting the opening of the electronic expansion valve in a first coil temperature threshold interval.
In another possible embodiment, the preset coil temperature threshold comprises a second coil temperature threshold interval; the analysis generation module 32 is further configured to: if the outdoor ambient temperature T Dry ball The outdoor relative humidity RH is smaller than the first relative humidity threshold and is not smaller than the second relative humidity threshold, and a second control mode is generated; wherein the second control mode includes performing the following actions: starting an electric heating belt of the chassis, and closing a designated time length after each first time length is operated; reducing the frequency of the compressor to 80% of the current operating frequency; the rotating speed of the indoor fan is reduced to 80% of the current rotating speed; the rotating speed of the outdoor fan is improved to be 95% of the highest rotating speed; according to the temperature T of the coil pipe of the heat exchanger Coiled pipe And adjusting the opening of the electronic expansion valve in a second coil temperature threshold interval.
In another possible embodiment, the preset coil temperature threshold comprises a third coil temperature threshold interval; the analysis generation module 32 is further configured to: if the outdoor ambient temperature T Dry ball The outdoor relative humidity RH is not greater than a preset dry bulb temperature threshold value, and is less than a second relative humidity threshold value, a third control mode is generated; wherein the third control mode includes performing the following actions: turning on an electric heating belt of the chassis, and turning off a designated time after each second time period is operated; reducing the frequency of the compressor to 85% of the current operating frequency; reducing the rotating speed of the indoor fan to 85% of the current rotating speed; the rotating speed of the outdoor fan is improved to 90% of the highest rotating speed; according to the temperature T of the coil pipe of the heat exchanger Coiled pipe And adjusting the opening of the electronic expansion valve in a third coil temperature threshold interval.
In another possible embodiment, the upper partThe first coil temperature threshold interval comprises a first coil temperature threshold and a second coil temperature threshold, and the first coil temperature threshold is larger than the second coil temperature threshold; above-mentioned according to heat exchanger coil temperature T Coiled pipe And a first coil temperature threshold interval, adjusting an opening of the electronic expansion valve, comprising: if the heat exchanger coil temperature T Coiled pipe The method comprises the steps of adjusting the opening of an electronic expansion valve according to a preset interval and a first opening increment when the temperature of the electronic expansion valve is larger than a first coil temperature threshold; if the heat exchanger coil temperature T Coiled pipe The opening of the electronic expansion valve is adjusted and controlled according to a preset interval and a second opening increment when the temperature of the electronic expansion valve is not greater than the first coil temperature threshold and is greater than the second coil temperature threshold; if the heat exchanger coil temperature T Coiled pipe The temperature threshold value of the second coil pipe is not larger than the temperature threshold value of the second coil pipe, and the electronic expansion valve is controlled to keep the current opening; wherein the first opening increment is greater than the second opening increment.
In another possible embodiment, the first opening increment is 10 degrees and the second opening increment is 5 degrees.
In another possible embodiment, the apparatus further comprises: acquiring detection parameters of the air conditioner during defrosting operation; analyzing the relation between the detection parameter and the preset parameter threshold value during defrosting operation, and generating a corresponding electric heating control mode according to the analysis result; and controlling the chassis electric heating belt to run according to the electric heating control mode until defrosting is finished.
In another possible implementation manner, the parameter obtaining module 31 is further configured to: acquiring outdoor ambient temperature T Dry ball Coil temperature T of heat exchanger Coiled pipe And an outdoor ambient wet bulb temperature T Wet ball The method comprises the steps of carrying out a first treatment on the surface of the According to the outdoor environment temperature T Dry ball And an outdoor ambient wet bulb temperature T Wet ball Searching in a preset humidity lookup table, and taking the searched humidity as the outdoor relative humidity RH.
The air conditioner heating control device provided by the embodiment of the invention has the same technical characteristics as the air conditioner heating control method provided by the embodiment, so that the same technical problems can be solved, and the same technical effects can be achieved.
The embodiment of the invention also provides an air conditioner, which comprises a processor and a memory, wherein the memory stores machine executable instructions which can be executed by the processor, and the processor executes the machine executable instructions to realize the heating control method of the air conditioner.
Referring to fig. 4, the air conditioner includes a processor 40 and a memory 41, the memory 41 storing machine executable instructions executable by the processor 40, the processor 40 executing the machine executable instructions to implement the above-described air conditioner heating control method.
Further, the air conditioner shown in fig. 4 further includes a bus 42 and a communication interface 43, and the processor 40, the communication interface 43 and the memory 41 are connected through the bus 42.
The memory 41 may include a high-speed random access memory (RAM, random Access Memory), and may further include a non-volatile memory (non-volatile memory), such as at least one magnetic disk memory. The communication connection between the system network element and the at least one other network element is achieved via at least one communication interface 43 (which may be wired or wireless), which may use the internet, a wide area network, a local network, a metropolitan area network, etc. Bus 42 may be an ISA (Industrial Standard Architecture, industry standard architecture) bus, PCI (Peripheral Component Interconnect, peripheral component interconnect standard) bus, or EISA (Enhanced Industry Standard Architecture, extended industry standard architecture) bus, among others. The buses may be classified into address buses, data buses, control buses, and the like. For ease of illustration, only one bi-directional arrow is shown in FIG. 4, but not only one bus or type of bus.
The processor 40 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuitry in hardware or instructions in software in processor 40. The processor 40 may be a general-purpose processor, including a central processing unit (Central Processing Unit, CPU), a network processor (Network Processor, NP), etc.; but also digital signal processors (Digital Signal Processor, DSP for short), application specific integrated circuits (Application Specific Integrated Circuit, ASIC for short), field-programmable gate arrays (Field-Programmable Gate Array, FPGA for short) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be embodied directly in the execution of a hardware decoding processor, or in the execution of a combination of hardware and software modules in a decoding processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory 41 and the processor 40 reads the information in the memory 41 and in combination with its hardware performs the steps of the method of the previous embodiment.
The embodiment also provides a machine-readable storage medium, wherein the machine-readable storage medium stores machine-executable instructions, and when the machine-executable instructions are called and executed by a processor, the machine-executable instructions cause the processor to realize the air conditioner heating control method.
The method and apparatus for controlling heating of an air conditioner and the computer program product of the air conditioner provided by the embodiments of the present invention include a computer readable storage medium storing program codes, and instructions included in the program codes may be used to execute the method described in the foregoing method embodiment, and specific implementation may refer to the method embodiment and will not be repeated herein.
It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described system and apparatus may refer to corresponding procedures in the foregoing method embodiments, which are not described herein again.
In addition, in the description of embodiments of the present invention, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a non-volatile computer readable storage medium executable by a processor. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: the above examples are only specific embodiments of the present invention, and are not intended to limit the scope of the present invention, but it should be understood by those skilled in the art that the present invention is not limited thereto, and that the present invention is described in detail with reference to the foregoing examples: any person skilled in the art may modify or easily conceive of the technical solution described in the foregoing embodiments, or perform equivalent substitution of some of the technical features, while remaining within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention, and are intended to be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (7)

1. The heating control method of the air conditioner is characterized by being applied to a controller of the air conditioner, and the air conditioner further comprises a compressor, an indoor fan, an outdoor fan, an electronic expansion valve and a chassis electric heating belt which are in communication connection with the controller; the method comprises the following steps:
Acquiring detection parameters of the air conditioner during heating operation; wherein the detection parameters include: outdoor ambient temperature T Dry ball Outdoor relative humidity RH and heat exchanger coil temperature T Coiled pipe ；
Analyzing the relation between the detection parameters and the preset parameter threshold values, and generating a corresponding control mode according to the analysis result; the control mode comprises control actions corresponding to the chassis electric heating belt, the compressor, the indoor fan, the outdoor fan and the electronic expansion valve respectively;
controlling the air conditioner to operate according to the control mode;
the preset parameter threshold comprises a preset dry bulb temperature threshold, a preset relative humidity threshold and a preset coil temperature threshold; the preset relative humidity threshold comprises a first relative humidity threshold and a second relative humidity threshold, the first relative humidity threshold is larger than the second relative humidity threshold, and the preset coil temperature threshold comprises a first coil temperature threshold section;
the step of analyzing the relation between the detection parameter and the preset parameter threshold value and generating a corresponding control mode according to the analysis result comprises the following steps: if the outdoor ambient temperature T Dry ball Generating a first control mode if the outdoor relative humidity RH is not greater than the preset dry bulb temperature threshold and is not less than the first relative humidity threshold; wherein the first control mode includes performing the following actions: starting the chassis electric heating belt; reducing the frequency of the compressor to 75% of the current operating frequency; the rotating speed of the indoor fan is reduced to 75% of the current rotating speed; the rotating speed of the outdoor fan is increased to be the highest rotating speed; according to the temperature T of the coil pipe of the heat exchanger Coiled pipe The opening degree of the electronic expansion valve is adjusted in the first coil temperature threshold interval;
the preset coil temperature threshold comprises a second coil temperature threshold interval; the step of analyzing the relation between the detection parameter and the preset parameter threshold value and generating a corresponding control mode according to the analysis result, and the method further comprises the following steps: if the outdoor ambient temperature T Dry ball The outdoor relative humidity RH is not greater than the preset dry bulb temperature threshold, is less than the first relative humidity threshold and is not less than the second relative humidity threshold, and a second control mode is generated; wherein the second control mode includes performing the following actions: starting the chassis electric heating belt, and closing the designated time after each first time of operation; reducing the frequency of the compressor to 80% of the current operating frequency; the rotating speed of the indoor fan is reduced to 80% of the current rotating speed; the rotating speed of the outdoor fan is increased to 95% of the highest rotating speed; according to the temperature T of the coil pipe of the heat exchanger Coiled pipe The opening degree of the electronic expansion valve is adjusted in the second coil temperature threshold interval;
the preset coil temperature threshold comprises a third coil temperature threshold interval; the step of analyzing the relation between the detection parameter and the preset parameter threshold value and generating a corresponding control mode according to the analysis result, and the method further comprises the following steps: if the outdoor ambient temperature T Dry ball Generating a third control mode when the outdoor relative humidity RH is not greater than the preset dry bulb temperature threshold and is less than the second relative humidity threshold; wherein the third control mode includes performing the following actions: turning on the chassis electric heating belt, and turning off the appointed time after each second time period is operated;reducing the frequency of the compressor to 85% of the current operating frequency; reducing the rotating speed of the indoor fan to 85% of the current rotating speed; the rotating speed of the outdoor fan is increased to 90% of the highest rotating speed; according to the temperature T of the coil pipe of the heat exchanger Coiled pipe And adjusting the opening of the electronic expansion valve in the third coil temperature threshold interval.
2. The method of claim 1, wherein the first coil temperature threshold interval comprises a first coil temperature threshold and a second coil temperature threshold, and wherein the first coil temperature threshold is greater than the second coil temperature threshold; said temperature T according to said heat exchanger coil Coiled pipe And a step of adjusting the opening of the electronic expansion valve in the first coil temperature threshold section, the step including:
if the heat exchanger coil temperature T Coiled pipe The opening of the electronic expansion valve is adjusted according to a preset interval and a first opening increment when the temperature of the first coil is larger than the temperature threshold of the first coil; if the heat exchanger coil temperature T Coiled pipe The opening of the electronic expansion valve is adjusted and controlled according to the preset interval and the second opening increment, wherein the opening is not larger than the first coil temperature threshold and is larger than the second coil temperature threshold; if the heat exchanger coil temperature T Coiled pipe Controlling the electronic expansion valve to keep the current opening degree when the temperature of the electronic expansion valve is not larger than the temperature threshold value of the second coil; wherein the first opening degree increment is larger than the second opening degree increment.
3. The method of claim 2, wherein the first opening delta is 10 degrees and the second opening delta is 5 degrees.
4. The method according to claim 1, wherein the method further comprises:
acquiring detection parameters of the air conditioner during defrosting operation;
analyzing the relation between the detection parameter and a preset parameter threshold value during defrosting operation, and generating a corresponding electric heating control mode according to the analysis result;
And controlling the chassis electric heating belt to run according to the electric heating control mode until defrosting is finished.
5. The method of claim 1, wherein the step of acquiring the detection parameter in the heating operation of the air conditioner comprises:
acquiring the outdoor environment temperature T Dry ball Temperature T of the heat exchanger coil Coiled pipe And an outdoor ambient wet bulb temperature T Wet ball ；
According to the outdoor environment temperature T Dry ball And the outdoor ambient wet bulb temperature T Wet ball Searching in a preset humidity lookup table, and taking the searched humidity as the outdoor relative humidity RH.
6. The heating control device of the air conditioner is characterized by being applied to a controller of the air conditioner, and the air conditioner further comprises a compressor, an indoor fan, an outdoor fan, an electronic expansion valve and a chassis electric heating belt which are in communication connection with the controller; the device comprises:
the parameter acquisition module is used for acquiring detection parameters of the air conditioner during heating operation; wherein the detection parameters include: outdoor ambient temperature T Dry ball Outdoor relative humidity RH and heat exchanger coil temperature T Coiled pipe ；
The analysis generating module is used for analyzing the relation between the detection parameters and the preset parameter threshold value and generating a corresponding control mode according to the analysis result; the control mode comprises control actions corresponding to the chassis electric heating belt, the compressor, the indoor fan, the outdoor fan and the electronic expansion valve respectively;
The control operation module is used for controlling the air conditioner to operate according to the control mode;
the preset parameter threshold comprises a preset dry bulb temperature threshold, a preset relative humidity threshold and a preset coil temperature threshold; the preset relative humidity threshold comprises a first relative humidity threshold and a second relative humidity threshold, the first relative humidity threshold is larger than the second relative humidity threshold, and the preset coil temperature threshold comprises a first coil temperature threshold section;
the analysis generation module further includes: if the outdoor ambient temperature T Dry ball Generating a first control mode if the outdoor relative humidity RH is not greater than the preset dry bulb temperature threshold and is not less than the first relative humidity threshold; wherein the first control mode includes performing the following actions: starting the chassis electric heating belt; reducing the frequency of the compressor to 75% of the current operating frequency; the rotating speed of the indoor fan is reduced to 75% of the current rotating speed; the rotating speed of the outdoor fan is increased to be the highest rotating speed; according to the temperature T of the coil pipe of the heat exchanger Coiled pipe The opening degree of the electronic expansion valve is adjusted in the first coil temperature threshold interval;
The preset coil temperature threshold comprises a second coil temperature threshold interval; the analysis generation module further includes: if the outdoor ambient temperature T Dry ball The outdoor relative humidity RH is not greater than the preset dry bulb temperature threshold, is less than the first relative humidity threshold and is not less than the second relative humidity threshold, and a second control mode is generated; wherein the second control mode includes performing the following actions: starting the chassis electric heating belt, and closing the designated time after each first time of operation; reducing the frequency of the compressor to 80% of the current operating frequency; the rotating speed of the indoor fan is reduced to 80% of the current rotating speed; the rotating speed of the outdoor fan is increased to 95% of the highest rotating speed; according to the temperature T of the coil pipe of the heat exchanger Coiled pipe The opening degree of the electronic expansion valve is adjusted in the second coil temperature threshold interval;
the preset coil temperature threshold comprises a third coil temperature threshold interval; the analysis generation module further includes: if the outdoor ambient temperature T Dry ball Generating a third control mode when the outdoor relative humidity RH is not greater than the preset dry bulb temperature threshold and is less than the second relative humidity threshold; wherein the third control mode includes performing the following actions: opening device Starting the chassis electric heating belt, and closing the designated time after each second time period is operated; reducing the frequency of the compressor to 85% of the current operating frequency; reducing the rotating speed of the indoor fan to 85% of the current rotating speed; the rotating speed of the outdoor fan is increased to 90% of the highest rotating speed; according to the temperature T of the coil pipe of the heat exchanger Coiled pipe And adjusting the opening of the electronic expansion valve in the third coil temperature threshold interval.
7. An air conditioner comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the steps of the method of any of the preceding claims 1-5 when executing the computer program.
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