CN113865008A - Defrosting control method and device, air conditioner and storage medium - Google Patents

Defrosting control method and device, air conditioner and storage medium Download PDF

Info

Publication number
CN113865008A
CN113865008A CN202010618026.8A CN202010618026A CN113865008A CN 113865008 A CN113865008 A CN 113865008A CN 202010618026 A CN202010618026 A CN 202010618026A CN 113865008 A CN113865008 A CN 113865008A
Authority
CN
China
Prior art keywords
temperature
heat exchanger
defrosting
liquid pipe
indoor heat
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010618026.8A
Other languages
Chinese (zh)
Inventor
钟文朝
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GD Midea Air Conditioning Equipment Co Ltd
Original Assignee
GD Midea Air Conditioning Equipment Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GD Midea Air Conditioning Equipment Co Ltd filed Critical GD Midea Air Conditioning Equipment Co Ltd
Priority to CN202010618026.8A priority Critical patent/CN113865008A/en
Publication of CN113865008A publication Critical patent/CN113865008A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located 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
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/56—Remote control
    • 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
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
    • 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
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
    • 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

Landscapes

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

Abstract

The invention relates to the technical field of air conditioners, and discloses a defrosting control method, a defrosting control device, an air conditioner and a storage medium, wherein the method comprises the following steps: starting a heating mode by sending a startup heating signal to a startup signal box through a startup signal box; the method comprises the steps that the temperature of a first indoor heat exchanger and the temperature of a first liquid pipe are obtained, and when the temperature of the first indoor heat exchanger or the temperature of the first liquid pipe reaches the condition of entering a defrosting state, the first indoor heat exchanger or the first liquid pipe enters the defrosting state; and after entering the defrosting state, acquiring the temperature of a second indoor heat exchanger and the temperature of a second liquid pipe in real time, and when the temperature of the second indoor heat exchanger or the temperature of the second liquid pipe reaches the condition of exiting the defrosting state, exiting the defrosting state. Therefore, the on-off signal box sends signals to the indoor unit and the outdoor unit, so that the indoor unit and the outdoor unit do not need to communicate, and free matching is realized. And the defrosting state is judged based on the temperature of the heat exchanger and the temperature of the liquid pipe, and the comfort and the reliability of the air conditioner in the defrosting state are ensured under the condition that the indoor unit is not communicated with the outdoor unit.

Description

Defrosting control method and device, air conditioner and storage medium
Technical Field
The invention relates to the technical field of air conditioners, in particular to a defrosting control method, a defrosting control device, defrosting control equipment and a storage medium.
Background
The indoor unit and the outdoor unit of the current air conditioner can only be installed and used in a matched mode, and the indoor unit needs to be communicated with the outdoor unit in the operation process so as to meet the requirements of comfort and reliability. Generally, users cannot separately purchase indoor units and outdoor units, and the indoor units and the outdoor units which are not matched with each other are difficult to communicate. If the indoor unit and the outdoor unit cannot communicate with each other, comfort and reliability are difficult to ensure, and particularly, uncomfortable experience is brought to users in the defrosting process of the outdoor unit.
Disclosure of Invention
The invention provides a defrosting control method, a defrosting control device, defrosting control equipment and a storage medium, and aims to realize free matching of an indoor unit and an outdoor unit and guarantee comfort and reliability of an air conditioner in a defrosting state under the condition that the indoor unit is not communicated with the outdoor unit.
In order to achieve the purpose, the invention provides a defrosting control method, which is applied to an air conditioner, wherein the air conditioner comprises an on-off signal box, an indoor unit and an outdoor unit, the on-off signal box is connected with the indoor unit through a signal line, and the on-off signal box is connected with the outdoor unit through a signal line; the method comprises the following steps:
sending a starting-up heating signal to the outdoor unit and the indoor unit through the starting-up and stopping signal box so that the outdoor unit and the indoor unit can start a heating mode, and controlling an indoor fan of the indoor unit to operate according to a preset windshield;
the method comprises the steps of acquiring the temperature of a first indoor heat exchanger and the temperature of a first liquid pipe in real time, and controlling the outdoor unit to enter a defrosting state when the temperature of the first indoor heat exchanger or the temperature of the first liquid pipe reaches the condition of entering the defrosting state;
and after entering the defrosting state, acquiring the temperature of a second indoor heat exchanger and the temperature of a second liquid pipe in real time, and controlling the outdoor unit to exit the defrosting state when the temperature of the second indoor heat exchanger or the temperature of the second liquid pipe reaches the condition of exiting the defrosting state.
Preferably, the step of acquiring a temperature of a first indoor heat exchanger and a temperature of a first liquid pipe in real time, and controlling the outdoor unit to enter the defrosting state when the temperature of the first indoor heat exchanger or the temperature of the first liquid pipe reaches a condition of entering the defrosting state includes:
acquiring the temperature of a first indoor heat exchanger and the temperature of a first liquid pipe in real time, and judging whether the condition of entering a defrosting state is met or not based on the temperature of the first indoor heat exchanger or the temperature of the first liquid pipe;
and if the condition of entering the defrosting state is met, controlling the outdoor unit to enter the defrosting state and controlling the indoor fan to stop running.
Preferably, the step of acquiring a first indoor heat exchanger temperature and a first liquid pipe temperature in real time, and determining whether a condition for entering a defrosting state is reached based on the first indoor heat exchanger temperature or the first liquid pipe temperature includes:
acquiring a first indoor heat exchanger temperature and a first liquid pipe temperature in real time through a heat exchanger temperature sensor and a liquid pipe temperature sensor of the indoor unit respectively;
comparing the temperature of the first indoor heat exchanger with a first threshold value, and if the temperature of the first indoor heat exchanger is less than or equal to the first threshold value, judging that a condition of entering a defrosting state is reached; or
When the heating mode runs for a preset time, comparing the temperature of the first liquid pipe with a second threshold value, and if the temperature of the first liquid pipe is less than or equal to the second threshold value, judging that a defrosting condition is reached; or
Acquiring a first difference value between the historical first indoor heat exchanger temperature at a specified moment and the first indoor heat exchanger temperature, and if the first difference value is smaller than or equal to a first difference value threshold, judging that the condition of entering a defrosting state is achieved.
Preferably, the step of acquiring a temperature of a second indoor heat exchanger and a temperature of a second liquid pipe in real time, and controlling the outdoor unit to exit the defrosting state when the temperature of the second indoor heat exchanger or the temperature of the second liquid pipe reaches a condition of exiting the defrosting state includes:
acquiring the temperature of the second indoor heat exchanger and the temperature of the second liquid pipe in real time, and judging whether the condition of exiting the defrosting state is met or not based on the temperature of the second indoor heat exchanger or the temperature of the second liquid pipe;
and if the condition of exiting the defrosting state is met, controlling the outdoor unit to exit the defrosting state, and controlling the indoor fan to operate again according to the preset gear.
Preferably, the step of determining whether a condition for exiting the defrosting state is reached based on the second indoor heat exchanger temperature or the second liquid pipe temperature includes:
comparing the second liquid pipe temperature with a third threshold value, and if the second liquid pipe temperature is greater than or equal to the third threshold value, judging that a condition of exiting a defrosting state is reached; or
Acquiring a second difference value between the historical second indoor heat exchanger temperature at the appointed moment and the second indoor heat exchanger temperature, and judging that the condition of exiting the defrosting state is reached if the second difference value is greater than a second difference value threshold value; or
And comparing the temperature of the second indoor heat exchanger with a fourth threshold value, and if the temperature of the second indoor heat exchanger is greater than or equal to the fourth threshold value, judging that the condition of exiting the defrosting state is reached.
Preferably, the step of acquiring a temperature of a first indoor heat exchanger and a temperature of a first liquid pipe in real time, and when the temperature of the first indoor heat exchanger or the temperature of the first liquid pipe reaches a condition of entering a defrosting state, the step of controlling the outdoor unit to enter the defrosting state further includes:
recording a starting time point of entering the defrosting state, and calculating defrosting time according to the current time point and the starting time point before exiting the defrosting state;
and when the defrosting time reaches a time threshold, controlling the outdoor unit to exit the defrosting state.
Preferably, after entering the defrosting state, acquiring a second indoor heat exchanger temperature and a second liquid pipe temperature in real time, and when the second indoor heat exchanger temperature or the second liquid pipe temperature reaches a condition of exiting the defrosting state, the step of controlling the outdoor unit to exit the defrosting state further includes:
and sending a shutdown signal to the outdoor unit and the indoor unit through the shutdown signal box so that the outdoor unit and the indoor unit exit the heating mode and stop running according to the shutdown signal.
Further, to achieve the above object, the present invention also provides a defrosting control apparatus including:
the signal sending module is used for sending a starting-up heating signal to the outdoor unit and the indoor unit through the starting-up and shutting-down signal box so as to enable the outdoor unit and the indoor unit to start a heating mode and control an indoor fan of the indoor unit to operate according to a preset windshield;
the first control module is used for acquiring the temperature of a first indoor heat exchanger and the temperature of a first liquid pipe in real time, and controlling the outdoor unit to enter a defrosting state when the temperature of the first indoor heat exchanger or the temperature of the first liquid pipe reaches the condition of entering the defrosting state;
and the second control module is used for acquiring the temperature of a second indoor heat exchanger and the temperature of a second liquid pipe in real time after entering the defrosting state, and controlling the outdoor unit to exit the defrosting state when the temperature of the second indoor heat exchanger or the temperature of the second liquid pipe reaches the condition of exiting the defrosting state.
In addition, in order to achieve the above object, the present invention further provides an air conditioner, which includes a processor, a memory, and a defrosting control program stored in the memory, wherein when the defrosting control program is executed by the processor, the steps of the defrosting control method are implemented.
In addition, to achieve the above object, the present invention also provides a computer storage medium having a defrosting control program stored thereon, the defrosting control program implementing the steps of the defrosting control method described above when being executed by a processor.
Compared with the prior art, the invention provides a defrosting control method and device, an air conditioner and a storage medium, wherein the starting-up and heating signals are sent to the outdoor unit and the indoor unit through the starting-up and closing-down signal box so that the outdoor unit and the indoor unit can start a heating mode, and an indoor fan of the indoor unit is controlled to operate according to a preset windshield; the method comprises the steps of acquiring the temperature of a first indoor heat exchanger and the temperature of a first liquid pipe in real time, and controlling the outdoor unit to enter a defrosting state when the temperature of the first indoor heat exchanger or the temperature of the first liquid pipe reaches the condition of entering the defrosting state; and after entering the defrosting state, acquiring the temperature of a second indoor heat exchanger and the temperature of a second liquid pipe in real time, and controlling the outdoor unit to exit the defrosting state when the temperature of the second indoor heat exchanger or the temperature of the second liquid pipe reaches the condition of exiting the defrosting state. Therefore, signals are sent to the outdoor unit and the indoor unit through the on-off signal box, the indoor unit and the outdoor unit do not need to communicate, and free matching of the indoor unit and the outdoor unit is achieved. And the indoor unit is controlled according to the judgment result by judging the defrosting state based on the temperature of the heat exchanger and the temperature of the first liquid pipe, and the comfort and the reliability of the air conditioner in the defrosting state are ensured under the condition that the indoor unit is not communicated with the outdoor unit.
Drawings
Fig. 1 is a schematic diagram of a hardware configuration of an air conditioner according to embodiments of the present invention;
FIG. 2 is a schematic flow chart of a first embodiment of the defrosting control method according to the invention;
FIG. 3 is a schematic diagram showing the components of an air conditioner according to a first embodiment of the defrosting control method of the present invention;
fig. 4 is a functional block diagram of the first embodiment of the defrosting control unit according to the present invention.
The reference numbers illustrate:
reference numerals Name (R) Reference numerals Name (R)
1 On-off signal box 33 Electronic expansion valve
2 Indoor machine 34 Outdoor fan
21 Indoor machine control panel 35 Four-way valve
22 Temperature sensor of heat exchanger 36 Compressor
23 Liquid pipe temperature sensor 37 Low-voltage sensor
24 Indoor heat exchanger 38 High-voltage sensor
25 Indoor windMachine for working 4 Signal line
3 Outdoor machine 5 Liquid pipe
31 Outdoor machine control panel 6 Trachea
32 Outdoor heat exchanger
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 1 is a schematic diagram of a hardware structure of an air conditioner according to embodiments of the present invention. In this embodiment of the present invention, the air conditioner may include a processor 1001 (e.g., a Central Processing Unit, CPU), a communication bus 1002, an input port 1003, an output port 1004, and a memory 1005. The communication bus 1002 is used for realizing connection communication among the components; the input port 1003 is used for data input; the output port 1004 is used for data output, the memory 1005 may be a high-speed RAM memory, or a non-volatile memory (non-volatile memory), such as a magnetic disk memory, and the memory 1005 may optionally be a storage device independent of the processor 1001. Those skilled in the art will appreciate that the hardware configuration depicted in FIG. 1 is not intended to be limiting of the present invention, and may include more or less components than those shown, or some components in combination, or a different arrangement of components.
With continued reference to fig. 1, the memory 1005 of fig. 1, which is one of the readable storage media, may include an operating system, a network communication module, an application program module, and a defrosting control program. In fig. 1, the network communication module is mainly used for connecting to a server and performing data communication with the server; the processor 1001 may call the defrosting control program stored in the memory 1005 and execute the defrosting control method provided by the embodiment of the present invention.
Based on the hardware structure shown in fig. 1, a first embodiment of the present invention provides a defrosting control method.
Referring to fig. 2, fig. 2 is a schematic flow chart of a first embodiment of the defrosting control method according to the present invention.
In this embodiment, the defrosting control method is applied to an air conditioner, and the method includes:
step S101, sending a starting-up heating signal to the outdoor unit and the indoor unit through the starting-up and shutting-down signal box so as to enable the outdoor unit and the indoor unit to start a heating mode, and controlling an indoor fan of the indoor unit to operate according to a preset windshield;
step S102, acquiring the temperature of a first indoor heat exchanger and the temperature of a first liquid pipe in real time, and controlling the outdoor unit to enter a defrosting state when the temperature of the first indoor heat exchanger or the temperature of the first liquid pipe reaches a condition of entering the defrosting state;
step S103, after entering the defrosting state, acquiring the temperature of a second indoor heat exchanger and the temperature of a second liquid pipe in real time, and controlling the outdoor unit to exit the defrosting state when the temperature of the second indoor heat exchanger or the temperature of the second liquid pipe reaches the condition of exiting the defrosting state.
The indoor unit and the outdoor unit of the air conditioner related to the embodiment do not communicate and are controlled by the on-off signal box. And the indoor unit and the outdoor unit may be either unmated or mated. For the non-matched indoor unit and outdoor unit, an indoor unit of a manufacturer I type A and an outdoor unit of a manufacturer I type B can be selected, or an indoor unit of a manufacturer I type C and an outdoor unit of a manufacturer II type W can be selected.
Specifically, referring to fig. 3, fig. 3 is a schematic composition diagram of an air conditioner according to a first embodiment of a defrosting control method of the present invention. As shown in fig. 3, the air conditioner includes an on/off signal box 1, an indoor unit 2, and an outdoor unit 3, wherein the on/off signal box 1 is connected to the indoor unit 2 through a signal line 4, and the on/off signal box 1 is connected to the outdoor unit 3 through a signal line 4. Generally, the on/off signaling box 1 is installed indoors, and for example, the on/off signaling box 1 may be installed at a proper position adjacent to the indoor unit 2. The indoor unit 2 further includes a heat exchanger temperature sensor 22 mounted on the indoor heat exchanger 24 and a liquid pipe temperature sensor 23 mounted on the liquid pipe 5. The on-off signal box 1 is connected with an indoor unit control panel 21 of the indoor unit 2 through a signal line 4, and sends indoor unit control instructions such as start, stop, operation mode, wind gear and the like to the indoor unit 2 based on the signal line 4. The on/off signal box 1 is connected to an outdoor unit control panel 31 of the outdoor unit 3 through a signal line 4, and sends outdoor unit control instructions such as start, stop, and operation modes to the outdoor unit 3 based on the signal line 4.
Further, the air conditioner further comprises a liquid pipe 5 and an air pipe 6. The liquid pipe 5 is used for the transmission and transportation of a refrigerant, one end of the liquid pipe 5 is connected to the electronic expansion valve 33 of the outdoor unit 3, and the other end of the liquid pipe 5 is connected to the indoor heat exchanger 24 of the indoor unit 2. One end of the air pipe 6 is connected to the four-way valve 35 of the outdoor unit 3, and the other end is connected to the indoor heat exchanger 24 of the indoor unit 2.
Further, the indoor unit 2 further includes a heat exchanger temperature sensor 22, a liquid pipe temperature sensor 23, an indoor heat exchanger 24, an indoor fan 25, and the like. Wherein, the heat exchanger temperature sensor 22 is used for detecting the temperature of the indoor heat exchanger 24, the liquid pipe temperature sensor 23 is used for detecting the temperature of the liquid pipe 5, and the liquid pipe temperature sensor 23 is installed at one end of the liquid pipe 5 close to the indoor heat exchanger 24.
In addition, the indoor unit 2 further includes an indoor fan 25 for supplying air according to a set damper. The outdoor unit 3 further includes an outdoor fan 34, an outdoor heat exchanger 32, an electronic expansion valve 33, a four-way valve 35, a compressor 36, a low pressure sensor 37, and a high pressure sensor 38. The outdoor fan 34 is used for cooling, heating and defrosting, and sends cold air or hot air into the indoor unit 2 through the air pipe 6; the outdoor heat exchanger 32 is used for exchanging heat with outdoor air; the electronic expansion valve 33 is used for adjusting the heat of the refrigerant; the four-way valve 35 is used for switching the working mode of the air conditioner; the compressor 36 compresses a driving refrigerant in an air conditioning refrigerant circuit for temperature regulation; the low-pressure sensor 37 and the high-pressure sensor 38 are used for pressure detection, so that the air conditioner can adjust relevant components based on the acquired pressure.
The step S101 is executed based on each component of the air conditioner: sending a starting-up heating signal to the outdoor unit and the indoor unit through the starting-up and stopping signal box 1 so as to enable the outdoor unit 3 and the indoor unit 2 to start a heating mode, and controlling an indoor fan 25 of the indoor unit 2 to operate according to a preset windshield;
it can be understood that the power on/off signal box 1 can be wirelessly connected with the intelligent electronic device through bluetooth or Wifi, and then receive the control command sent by the user through the intelligent electronic device based on the wireless connection. Or an operation panel is arranged in the startup and shutdown signal box 1, so that a user can directly trigger a control instruction according to the operation panel. The control instructions include outdoor unit control instructions such as start, stop, and operation modes transmitted to the outdoor unit 3, and indoor unit control instructions such as start, stop, operation modes, and dampers transmitted to the indoor unit 2. The operation modes comprise a heating mode, a refrigerating mode, an air supply mode, an intelligent mode and the like. In this embodiment, the start, stop and operation mode control instructions of the indoor unit 2 and the outdoor unit 3 may be triggered simultaneously by one key of the power on/off signal box 1, or the start, stop and operation mode control instructions of the indoor unit 2 and the outdoor unit 3 may be triggered separately. And when the outdoor unit 3 and the indoor unit 2 receive the control instruction, operating based on the control instruction. This allows the indoor unit 2 and the outdoor unit 3 to be operated in cooperation with each other even if they are not provided, and provides stability and reliability. And the user can select the indoor unit and the outdoor unit which are not matched, so that the selection space of the user is expanded, and the satisfaction degree of the user is improved.
In this embodiment, a startup heating signal is sent to the outdoor unit and the indoor unit through the startup and shutdown signal box, so that the outdoor unit and the indoor unit start a heating mode, and an indoor fan of the indoor unit is controlled to operate according to a preset windshield; when the air conditioner enters the heating mode, the compressor pressurizes the refrigerant to enable the refrigerant to become high-temperature high-pressure gas, the high-temperature high-pressure gas is condensed and liquefied through the indoor heat exchanger, a large amount of heat is released to enable the air to be heated, warm air is obtained, the warm air is blown into a room through the indoor fan according to a preset windshield, and then the temperature of the indoor air is improved. Then, the throttling device decompresses the refrigerant, evaporates and absorbs the heat of the outdoor air through the outdoor heat exchanger, and turns into gas to start the next cycle.
In the heating mode, the outdoor temperature is generally low, when the outdoor unit needs to absorb heat, the temperature of the evaporator body is reduced to be lower than 0 ℃, at the moment, moisture around the evaporator is condensed into frost and adsorbed on the evaporator, and then a channel between fins is blocked, the air circulation resistance is increased, and the heating effect is poor or even the outdoor unit is stopped. Therefore, in order to ensure the normal operation of the air conditioner, the general air conditioner has an automatic defrosting function.
In this embodiment, after entering the heating mode, the defrosting control process is started: executing the step S102: acquiring the temperature of a first indoor heat exchanger and the temperature of a first liquid pipe in real time, and controlling the outdoor unit to enter a defrosting state when the temperature of the first indoor heat exchanger or the temperature of the first liquid pipe reaches the condition of entering the defrosting state:
in this embodiment, the temperature sensor of the indoor heat exchanger is used for real-time measurementDetecting the temperature of a first indoor heat exchanger, monitoring the temperature of a first liquid pipe through a liquid pipe sensor, and judging whether a condition of entering a defrosting state is reached or not based on the temperature of the first indoor heat exchanger or the temperature of the first liquid pipe; and if the condition of entering the defrosting state is met, controlling the outdoor unit to enter the defrosting state and controlling the indoor fan to stop running. In this embodiment, T is usedE1Representing the first indoor heat exchanger temperature by TL1Representing the first-tube temperature. In this embodiment, the determining whether the condition of entering the defrosting state is reached at least includes the following three ways:
the first method is as follows: the temperature T of the first indoor heat exchangerE1And a first threshold value TT1Comparing, if the temperature of the first indoor heat exchanger is less than or equal to the first threshold, namely TE1≤TT1Judging that the condition of entering a defrosting state is reached; in the heating mode, the outdoor unit transmits warm air to the indoor heat exchanger through the air pipe, and the temperature of the first indoor heat exchanger of the indoor heat exchanger is generally higher. However, after the outdoor unit enters the defrosting state, cold air is transmitted to the indoor heat exchanger through the air pipe, so that when the temperature of the first indoor heat exchanger is reduced to a certain degree (i.e., the first threshold), it can be determined that the outdoor unit is about to enter the defrosting state. In this embodiment, the first threshold TT1Setting said first threshold T according to actual need, e.g.T1Set to 0 ℃.
The second method comprises the following steps: when the heating mode is operated for a preset time, the temperature T of the first liquid pipe is measuredL1And a second threshold value TT2Comparing if the first liquid tube temperature TL1Less than or equal to the second threshold value TT2I.e. TL1≤TT2Judging that the condition of entering a defrosting state is reached; in the heating mode, the compressor of the outdoor unit pressurizes the refrigerant to make the refrigerant become high-temperature and high-pressure gas, and the high-temperature and high-pressure gas is transmitted to the indoor heat exchanger through the liquid pipe, so that the temperature of the liquid pipe is relatively high. However, if the outdoor unit enters a defrosting state, the compressor stops operatingAnd the outdoor unit operates at low frequency, so that the refrigerant cannot be pressurized, and no or only a small amount of high-temperature and high-pressure gas is generated, therefore, when the temperature of the first liquid pipe is reduced to a certain degree (namely, the second threshold), the outdoor unit can be judged to be about to enter a defrosting state. The preset duration in this embodiment may be set according to experience, for example, set to 4 min; the second threshold value TT2Setting said second threshold T according to actual requirements, e.g.T2The temperature was set to 2 ℃.
The third method comprises the following steps: obtaining historical first indoor heat exchanger temperature T at appointed timeE-H1With the temperature T of the first indoor heat exchangerE1Is a first difference Δ T of1If said first difference is less than or equal to a first difference threshold Δ TH1Then, it is judged that the condition for entering the defrosting state is reached. The specified time may be a time several minutes before the current time, for example, a time 1min before the current time is marked as the specified time. That is, if the current time is 11:23:00, the specified time is 11:22: 00. The Δ T1＝TE-H1-TE1If said first difference Δ T is greater than or equal to1Less than or equal to a first difference threshold Δ TH1If the temperature of the indoor heat exchanger is decreased, it is determined that the outdoor unit is about to enter a defrosting state, and thus the first difference Δ T is smaller than the second difference Δ T1Less than or equal to a first difference threshold Δ TH1The condition for entering the defrosting state can be judged.
And if the condition of entering the defrosting state is met, controlling the outdoor unit to enter the defrosting state and controlling the indoor fan to stop running. Therefore, defrosting of the outdoor unit can be realized, and cold air cannot be blown to the indoor unit in the defrosting process.
Generally, the defrosting state of the outdoor unit is stopped after the defrosting is finished, and the heating mode is continuously operated. Because the indoor unit and the outdoor unit cannot directly communicate with each other, the indoor unit needs to determine whether defrosting of the outdoor unit is finished according to the temperature of the indoor heat exchanger and the temperature of the liquid pipe.
Specifically, step S103 is performed: and after entering the defrosting state, acquiring the temperature of a second indoor heat exchanger and the temperature of a second liquid pipe in real time, and controlling the outdoor unit to exit the defrosting state when the temperature of the second indoor heat exchanger or the temperature of the second liquid pipe reaches the condition of exiting the defrosting state.
In this embodiment, the temperature of the second indoor heat exchanger and the temperature of the second liquid pipe are detected in real time by the indoor heat exchanger temperature sensor and the liquid pipe temperature sensor, and after the temperature of the second indoor heat exchanger and the temperature of the second liquid pipe are obtained, whether the condition of exiting the defrosting state is met is judged based on the temperature of the second indoor heat exchanger or the temperature of the second liquid pipe; and if the condition of quitting the defrosting state is met, controlling the outdoor unit to quit the defrosting state, and controlling the indoor fan to restart and operate according to the preset gear. In this embodiment, T is usedE2Representing the second indoor heat exchanger temperature by TL2Represents the second liquid pipe temperature.
Specifically, whether the condition for exiting the defrosting state is reached can be judged according to any one of the following three ways:
the first method is as follows: the second liquid pipe is heated to the temperature TL2And a third threshold value TH3Comparing if the second liquid pipe temperature TL2Greater than or equal to the third threshold value TH3I.e. TL2≥TL2. When the defrosting of the outdoor unit is finished, the heating mode is continuously operated: the compressor of the outdoor unit pressurizes the refrigerant to make the refrigerant become high-temperature and high-pressure gas, and transmits the high-temperature and high-pressure gas to the indoor heat exchanger through the liquid pipe, so that the temperature of the liquid pipe rises, and when the temperature of the second liquid pipe is higher than the third threshold value TH3When the defrosting state is ended, the condition of quitting the defrosting state can be judged. The third threshold value T in this embodimentH3Setting said third threshold T according to the actual situation, e.g.H3The temperature was set to 14 ℃.
The second method comprises the following steps: obtaining the historical temperature T of the second indoor heat exchanger at the appointed momentE-H2And the temperature T of the second indoor heat exchangerE2Is a second difference Δ T2If said second difference Δ T is greater than said first difference Δ T2Greater than a preset second difference threshold Δ TH2Judging that the condition of exiting the defrosting state is reached; in this embodiment, the specified time may be a time several minutes before the current time, for example, the time 2min before the current time is marked as the specified time, that is, if the current time is 14:56:08, the specified time is 14:54: 08. The Δ T2＝TE-H2-TE2If said second difference Δ T is greater than Δ T2Greater than or equal to a second difference threshold Δ TH2I.e. Δ T2≥ΔTH2If the second difference value Δ T is greater than the first difference value Δ T, it is determined that the outdoor unit is in the heating mode and the defrosting state is ended2Greater than or equal to a second difference threshold Δ TH2The condition for exiting the defrosting state can be judged.
The third method comprises the following steps: the temperature T of the second indoor heat exchangerE2And a fourth threshold value TH4Comparing, if the temperature T of the second indoor heat exchangerE2Greater than or equal to the fourth threshold value TH4Then, the condition of exiting the defrosting state is judged to be reached. When the outdoor unit is in a defrosting state, the temperature T of the second indoor heat exchangerE2The refrigerant is low, when defrosting is finished and the heating mode is restarted, the compressor can normally operate to pressurize the refrigerant and generate a large amount of high-temperature high-pressure gas, and the high-temperature high-pressure gas can be transported to the second indoor heat exchanger, so that the temperature T of the second indoor heat exchanger is highE2Will gradually rise. Thereby when the second indoor heat exchanger temperature TE2Greater than or equal to the preset fourth threshold value TH4When the defrosting state is ended, the condition of quitting the defrosting state can be judged.
Whether the outdoor unit needs to exit the defrosting state or not is judged according to the temperature of the indoor heat exchanger or the temperature of the liquid pipe. Generally, after entering the defrosting state, a certain period of time of defrosting process is required, and if the condition for judging to reach the defrosting state is not reached in the defrosting process, the condition for exiting the defrosting state is reached. The defrost state needs to be forcibly exited. So as to avoid the reduction of indoor temperature caused by long-time defrosting state and further reduce the comfort level.
In this embodiment, after the step S102, the method further includes:
recording a starting time point of entering the defrosting state, and calculating defrosting time according to the current time point and the starting time point before exiting the defrosting state; marking the start time point as t0Recording the current time point as t1If yes, the defrosting time t is equal to the current time point t1Subtracting the start time point mark t0I.e. t ═ t1-t0. And, in the middle of timing, if the air conditioner exits the defrosting state, the calculation of the time length is stopped.
And when the defrosting time reaches a time threshold, controlling the outdoor unit to exit the defrosting state. Representing the duration threshold as tHThe duration threshold is set according to actual conditions, for example, the duration threshold is set to 20 min. When the defrosting time t reaches the time threshold tHAnd controlling the outdoor unit to exit the defrosting state, operating the heating mode and restarting the indoor unit. Therefore, long-time defrosting can be avoided, the indoor temperature can be kept, and the comfort level can be improved.
And continuously and circularly executing the steps S102 to S103 until the air conditioner stops running or exits from the heating mode.
In this embodiment, after the step S103, the method further includes: and sending a shutdown signal to the outdoor unit and the indoor unit through the shutdown signal box so that the outdoor unit and the indoor unit exit the heating mode and stop running according to the shutdown signal.
In this embodiment, the power on/off signal box may further receive a power off instruction sent by a user, and send a power off signal to the outdoor unit and the indoor unit based on the power off instruction, so that the outdoor unit and the indoor unit exit the heating mode and stop operating according to the power off signal. Therefore, the indoor unit and the outdoor unit can be matched to operate without communication, and the indoor unit and the outdoor unit have stability and reliability.
According to the scheme, the startup heating signals are sent to the outdoor unit and the indoor unit through the startup and shutdown signal box, so that the outdoor unit and the indoor unit can start a heating mode, and an indoor fan of the indoor unit is controlled to operate according to a preset windshield; the method comprises the steps of acquiring the temperature of a first indoor heat exchanger and the temperature of a first liquid pipe in real time, and controlling the outdoor unit to enter a defrosting state when the temperature of the first indoor heat exchanger or the temperature of the first liquid pipe reaches the condition of entering the defrosting state; and after entering the defrosting state, acquiring the temperature of a second indoor heat exchanger and the temperature of a second liquid pipe in real time, and controlling the outdoor unit to exit the defrosting state when the temperature of the second indoor heat exchanger or the temperature of the second liquid pipe reaches the condition of exiting the defrosting state. Therefore, signals are sent to the outdoor unit and the indoor unit through the on-off signal box, the indoor unit and the outdoor unit do not need to communicate, and free matching of the indoor unit and the outdoor unit is achieved. And the indoor unit is controlled according to the judgment result by judging the defrosting state based on the temperature of the heat exchanger and the temperature of the first liquid pipe, and the comfort and the reliability of the air conditioner in the defrosting state are ensured under the condition that the indoor unit is not communicated with the outdoor unit.
In addition, this embodiment still provides a defrosting controlling means. Referring to fig. 4, fig. 4 is a functional block diagram of a first embodiment of the defrosting control device according to the present invention.
In this embodiment, the defrosting control device is a virtual device, and is stored in the memory 1005 of the air conditioner shown in fig. 1, so as to implement all functions of the defrosting control program: the outdoor unit and the indoor unit are used for sending a starting-up heating signal to the outdoor unit and the indoor unit through the starting-up and stopping signal box so as to start a heating mode of the outdoor unit and the indoor unit and control an indoor fan of the indoor unit to operate according to a preset windshield; the system comprises an outdoor unit, a first indoor heat exchanger, a first liquid pipe, a second indoor heat exchanger, a second liquid pipe, a first liquid pipe and a second liquid pipe, wherein the outdoor unit is used for controlling the outdoor unit to enter a defrosting state when the temperature of the first indoor heat exchanger or the temperature of the first liquid pipe reaches a condition of entering the defrosting state; the outdoor unit is used for acquiring the temperature of a second indoor heat exchanger and the temperature of a second liquid pipe in real time after entering the defrosting state, and controlling the outdoor unit to exit the defrosting state when the temperature of the second indoor heat exchanger or the temperature of the second liquid pipe reaches the condition of exiting the defrosting state.
Specifically, referring to fig. 4, the defrosting control means includes:
the signal sending module is used for sending a starting-up heating signal to the outdoor unit and the indoor unit through the starting-up and shutting-down signal box so as to enable the outdoor unit and the indoor unit to start a heating mode and control an indoor fan of the indoor unit to operate according to a preset windshield;
the first control module is used for acquiring the temperature of a first indoor heat exchanger and the temperature of a first liquid pipe in real time, and controlling the outdoor unit to enter a defrosting state when the temperature of the first indoor heat exchanger or the temperature of the first liquid pipe reaches the condition of entering the defrosting state;
and the second control module is used for acquiring the temperature of a second indoor heat exchanger and the temperature of a second liquid pipe in real time after entering the defrosting state, and controlling the outdoor unit to exit the defrosting state when the temperature of the second indoor heat exchanger or the temperature of the second liquid pipe reaches the condition of exiting the defrosting state.
Further, the first control module is further configured to:
acquiring the temperature of a first indoor heat exchanger and the temperature of a first liquid pipe in real time, and judging whether the condition of entering a defrosting state is met or not based on the temperature of the first indoor heat exchanger or the temperature of the first liquid pipe;
and if the condition of entering the defrosting state is met, controlling the outdoor unit to enter the defrosting state and controlling the indoor fan to stop running.
Further, the first control module is further configured to:
acquiring a first indoor heat exchanger temperature and a first liquid pipe temperature in real time through a heat exchanger temperature sensor and a liquid pipe temperature sensor of the indoor unit respectively;
comparing the temperature of the first indoor heat exchanger with a first threshold value, and if the temperature of the first indoor heat exchanger is less than or equal to the first threshold value, judging that a condition of entering a defrosting state is reached; or
When the heating mode runs for a preset time, comparing the temperature of the first liquid pipe with a second threshold value, and if the temperature of the first liquid pipe is less than or equal to the second threshold value, judging that a defrosting condition is reached; or
Acquiring a first difference value between the historical first indoor heat exchanger temperature at a specified moment and the first indoor heat exchanger temperature, and if the first difference value is smaller than or equal to a first difference value threshold, judging that the condition of entering a defrosting state is achieved.
Further, the second control module is further configured to:
acquiring the temperature of the second indoor heat exchanger and the temperature of the second liquid pipe in real time, and judging whether the condition of exiting the defrosting state is met or not based on the temperature of the second indoor heat exchanger or the temperature of the second liquid pipe;
and if the condition of exiting the defrosting state is met, controlling the outdoor unit to exit the defrosting state, and controlling the indoor fan to operate again according to the preset gear.
Further, the second control module is further configured to:
comparing the second liquid pipe temperature with a third threshold value, and if the second liquid pipe temperature is greater than or equal to the third threshold value, judging that a condition of exiting a defrosting state is reached; or
Acquiring a second difference value between the historical second indoor heat exchanger temperature at the appointed moment and the second indoor heat exchanger temperature, and judging that the condition of exiting the defrosting state is reached if the second difference value is greater than a second difference value threshold value; or
And comparing the temperature of the second indoor heat exchanger with a fourth threshold value, and if the temperature of the second indoor heat exchanger is greater than or equal to the fourth threshold value, judging that the condition of exiting the defrosting state is reached.
Further, the second control module is further configured to:
recording a starting time point of entering the defrosting state, and calculating defrosting time according to the current time point and the starting time point before exiting the defrosting state;
and when the defrosting time reaches a time threshold, controlling the outdoor unit to exit the defrosting state.
Further, the second control module is further configured to:
and sending a shutdown signal to the outdoor unit and the indoor unit through the shutdown signal box so that the outdoor unit and the indoor unit exit the heating mode and stop running according to the shutdown signal.
In addition, an embodiment of the present invention further provides a computer storage medium, where a defrosting control program is stored on the computer storage medium, and when the defrosting control program is executed by a processor, the steps of the defrosting control method are implemented, which are not described herein again.
Compared with the prior art, the defrosting control method, the defrosting control device, the air conditioner and the storage medium are provided by the invention, the method is applied to the air conditioner, and the method comprises the following steps: sending a starting-up heating signal to the outdoor unit and the indoor unit through the starting-up and stopping signal box so that the outdoor unit and the indoor unit can start a heating mode, and controlling an indoor fan of the indoor unit to operate according to a preset windshield; the method comprises the steps of acquiring the temperature of a first indoor heat exchanger and the temperature of a first liquid pipe in real time, and controlling the outdoor unit to enter a defrosting state when the temperature of the first indoor heat exchanger or the temperature of the first liquid pipe reaches the condition of entering the defrosting state; and after entering the defrosting state, acquiring the temperature of a second indoor heat exchanger and the temperature of a second liquid pipe in real time, and controlling the outdoor unit to exit the defrosting state when the temperature of the second indoor heat exchanger or the temperature of the second liquid pipe reaches the condition of exiting the defrosting state. Therefore, signals are sent to the outdoor unit and the indoor unit through the on-off signal box, the indoor unit and the outdoor unit do not need to communicate, and free matching of the indoor unit and the outdoor unit is achieved. And the indoor unit is controlled according to the judgment result by judging the defrosting state based on the temperature of the heat exchanger and the temperature of the first liquid pipe, and the comfort and the reliability of the air conditioner in the defrosting state are ensured under the condition that the indoor unit is not communicated with the outdoor unit.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for causing a terminal device to execute the method according to the embodiments of the present invention.
The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and all equivalent structures or flow transformations made by the present specification and drawings, or applied directly or indirectly to other related arts, are included in the scope of the present invention.

Claims (10)

1. A defrosting control method is characterized in that the method is applied to an air conditioner, the air conditioner comprises an on-off signal box, an indoor unit and an outdoor unit, the on-off signal box is connected with the indoor unit through a signal line, and the on-off signal box is connected with the outdoor unit through a signal line; the method comprises the following steps:
sending a starting-up heating signal to the outdoor unit and the indoor unit through the starting-up and stopping signal box so that the outdoor unit and the indoor unit can start a heating mode, and controlling an indoor fan of the indoor unit to operate according to a preset windshield;
the method comprises the steps of acquiring the temperature of a first indoor heat exchanger and the temperature of a first liquid pipe in real time, and controlling the outdoor unit to enter a defrosting state when the temperature of the first indoor heat exchanger or the temperature of the first liquid pipe reaches the condition of entering the defrosting state;
and after entering the defrosting state, acquiring the temperature of a second indoor heat exchanger and the temperature of a second liquid pipe in real time, and controlling the outdoor unit to exit the defrosting state when the temperature of the second indoor heat exchanger or the temperature of the second liquid pipe reaches the condition of exiting the defrosting state.
2. The method of claim 1, wherein the step of obtaining the first indoor heat exchanger temperature and the first liquid pipe temperature in real time, and controlling the outdoor unit to enter the defrosting state when the first indoor heat exchanger temperature or the first liquid pipe temperature reaches a condition of entering the defrosting state comprises:
acquiring the temperature of a first indoor heat exchanger and the temperature of a first liquid pipe in real time, and judging whether the condition of entering a defrosting state is met or not based on the temperature of the first indoor heat exchanger or the temperature of the first liquid pipe;
and if the condition of entering the defrosting state is met, controlling the outdoor unit to enter the defrosting state and controlling the indoor fan to stop running.
3. The method of claim 2, wherein the step of obtaining a first indoor heat exchanger temperature and a first liquid pipe temperature in real time, and the step of determining whether a condition for entering a defrosting state is reached based on the first indoor heat exchanger temperature or the first liquid pipe temperature comprises:
acquiring a first indoor heat exchanger temperature and a first liquid pipe temperature in real time through a heat exchanger temperature sensor and a liquid pipe temperature sensor of the indoor unit respectively;
comparing the temperature of the first indoor heat exchanger with a first threshold value, and if the temperature of the first indoor heat exchanger is less than or equal to the first threshold value, judging that a condition of entering a defrosting state is reached; or
When the heating mode runs for a preset time, comparing the temperature of the first liquid pipe with a second threshold value, and if the temperature of the first liquid pipe is less than or equal to the second threshold value, judging that a defrosting condition is reached; or
Acquiring a first difference value between the historical first indoor heat exchanger temperature at a specified moment and the first indoor heat exchanger temperature, and if the first difference value is smaller than or equal to a first difference value threshold, judging that the condition of entering a defrosting state is achieved.
4. The method of claim 1, wherein the step of obtaining the second indoor heat exchanger temperature and the second liquid pipe temperature in real time, and controlling the outdoor unit to exit the defrosting state when the second indoor heat exchanger temperature or the second liquid pipe temperature reaches a condition for exiting the defrosting state comprises:
acquiring the temperature of the second indoor heat exchanger and the temperature of the second liquid pipe in real time, and judging whether the condition of exiting the defrosting state is met or not based on the temperature of the second indoor heat exchanger or the temperature of the second liquid pipe;
and if the condition of exiting the defrosting state is met, controlling the outdoor unit to exit the defrosting state, and controlling the indoor fan to operate again according to the preset gear.
5. The method of claim 4, wherein the step of determining whether the condition for exiting the defrost state is reached based on the second indoor heat exchanger temperature or the second liquid tube temperature comprises:
comparing the second liquid pipe temperature with a third threshold value, and if the second liquid pipe temperature is greater than or equal to the third threshold value, judging that a condition of exiting a defrosting state is reached; or
Acquiring a second difference value between the historical second indoor heat exchanger temperature at the appointed moment and the second indoor heat exchanger temperature, and judging that the condition of exiting the defrosting state is reached if the second difference value is greater than a second difference value threshold value; or
And comparing the temperature of the second indoor heat exchanger with a fourth threshold value, and if the temperature of the second indoor heat exchanger is greater than or equal to the fourth threshold value, judging that the condition of exiting the defrosting state is reached.
6. The method as claimed in any one of claims 1 to 5, wherein the step of obtaining the first indoor heat exchanger temperature and the first liquid pipe temperature in real time, and when the first indoor heat exchanger temperature or the first liquid pipe temperature reaches a condition of entering a defrosting state, the step of controlling the outdoor unit to enter the defrosting state further comprises:
recording a starting time point of entering the defrosting state, and calculating defrosting time according to the current time point and the starting time point before exiting the defrosting state;
and when the defrosting time reaches a time threshold, controlling the outdoor unit to exit the defrosting state.
7. The method as claimed in any one of claims 1 to 5, wherein the step of obtaining a second indoor heat exchanger temperature and a second liquid pipe temperature in real time after entering the defrosting state, and when the second indoor heat exchanger temperature or the second liquid pipe temperature reaches a condition of exiting the defrosting state, the step of controlling the outdoor unit to exit the defrosting state further comprises:
and sending a shutdown signal to the outdoor unit and the indoor unit through the shutdown signal box so that the outdoor unit and the indoor unit exit the heating mode and stop running according to the shutdown signal.
8. A defrosting control apparatus characterized by comprising:
the signal sending module is used for sending a starting-up heating signal to the outdoor unit and the indoor unit through the starting-up and shutting-down signal box so as to enable the outdoor unit and the indoor unit to start a heating mode and control an indoor fan of the indoor unit to operate according to a preset windshield;
the first control module is used for acquiring the temperature of a first indoor heat exchanger and the temperature of a first liquid pipe in real time, and controlling the outdoor unit to enter a defrosting state when the temperature of the first indoor heat exchanger or the temperature of the first liquid pipe reaches the condition of entering the defrosting state;
and the second control module is used for acquiring the temperature of a second indoor heat exchanger and the temperature of a second liquid pipe in real time after entering the defrosting state, and controlling the outdoor unit to exit the defrosting state when the temperature of the second indoor heat exchanger or the temperature of the second liquid pipe reaches the condition of exiting the defrosting state.
9. An air conditioner, characterized in that the air conditioner comprises a processor, a memory and a defrosting control program stored in the memory, wherein when the defrosting control program is executed by the processor, the steps of the defrosting control method according to any one of claims 1 to 7 are realized.
10. A computer storage medium having a defrosting control program stored thereon, the defrosting control program when executed by a processor implementing the steps of the defrosting control method according to any one of claims 1 to 7.
CN202010618026.8A 2020-06-30 2020-06-30 Defrosting control method and device, air conditioner and storage medium Pending CN113865008A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010618026.8A CN113865008A (en) 2020-06-30 2020-06-30 Defrosting control method and device, air conditioner and storage medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010618026.8A CN113865008A (en) 2020-06-30 2020-06-30 Defrosting control method and device, air conditioner and storage medium

Publications (1)

Publication Number Publication Date
CN113865008A true CN113865008A (en) 2021-12-31

Family

ID=78981744

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010618026.8A Pending CN113865008A (en) 2020-06-30 2020-06-30 Defrosting control method and device, air conditioner and storage medium

Country Status (1)

Country Link
CN (1) CN113865008A (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR870005222A (en) * 1985-11-18 1987-06-05 다니이 아끼오 Defrost Control Device of Air Conditioner
CN101793429A (en) * 2010-02-26 2010-08-04 广东美的电器股份有限公司 Intelligent defrosting control method of split air conditioner
CN103604198A (en) * 2013-11-06 2014-02-26 四川长虹电器股份有限公司 Intelligent air conditioner control system
CN109323373A (en) * 2018-10-17 2019-02-12 青岛海尔空调器有限总公司 Air conditioner defrosting control method
CN109458708A (en) * 2018-10-31 2019-03-12 珠海格力电器股份有限公司 Without communication air-conditioning and its operational mode judgment method and control method
CN110470014A (en) * 2019-08-03 2019-11-19 青岛海尔空调器有限总公司 Control method and device, air-conditioning for air-conditioner defrosting
CN110469990A (en) * 2019-07-28 2019-11-19 青岛海尔空调器有限总公司 For the control method of air-conditioner defrosting, device and air-conditioning

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR870005222A (en) * 1985-11-18 1987-06-05 다니이 아끼오 Defrost Control Device of Air Conditioner
CN101793429A (en) * 2010-02-26 2010-08-04 广东美的电器股份有限公司 Intelligent defrosting control method of split air conditioner
CN103604198A (en) * 2013-11-06 2014-02-26 四川长虹电器股份有限公司 Intelligent air conditioner control system
CN109323373A (en) * 2018-10-17 2019-02-12 青岛海尔空调器有限总公司 Air conditioner defrosting control method
CN109458708A (en) * 2018-10-31 2019-03-12 珠海格力电器股份有限公司 Without communication air-conditioning and its operational mode judgment method and control method
CN110469990A (en) * 2019-07-28 2019-11-19 青岛海尔空调器有限总公司 For the control method of air-conditioner defrosting, device and air-conditioning
CN110470014A (en) * 2019-08-03 2019-11-19 青岛海尔空调器有限总公司 Control method and device, air-conditioning for air-conditioner defrosting

Similar Documents

Publication Publication Date Title
US10465936B2 (en) Air conditioner and method of controlling the same
CN110848910B (en) Air conditioner, air conditioner control method and device and readable storage medium
CN110513819B (en) Air conditioner control method, air conditioner and storage medium
CN111765606A (en) Method for controlling low-temperature heating start of air conditioner, air conditioner and storage medium
CN104110766B (en) A kind of control method of air-conditioner intelligent defrosting
EP2148147A2 (en) Method of controlling air conditioner
CN111023455B (en) Defrosting control method, defrosting control device, air conditioner and readable storage medium
CN111207486A (en) Intelligent defrosting control method for air conditioner, computer readable storage medium and air conditioner
CN110017582B (en) Defrosting control method for air conditioner
CN108592297B (en) Defrosting control method for air conditioner
KR101995583B1 (en) Air conditioner and method for controlling the same
CN110848852B (en) Air conditioner and control method and control device thereof
CN114076391A (en) Multi-split air conditioner, control method thereof, air conditioner control device and readable storage medium
CN113865008A (en) Defrosting control method and device, air conditioner and storage medium
CN110285492B (en) Air conditioning system, control device and control system
CN112032967A (en) Control method of air conditioner
US11493226B2 (en) Airconditioning apparatus
CN114294783B (en) Air conditioner control method and device, air conditioner and storage medium
US20210341193A1 (en) Air Conditioning Device
US20100146995A1 (en) Air conditioning methods and apparatus
CN112682902B (en) Refrigerant distribution method of air conditioner, air conditioner and storage medium
CN108800435B (en) Defrosting control method for air conditioner
JP6939894B2 (en) Building equipment management system
CN113551437A (en) Air conditioning system and control method
CN115247862B (en) Operation control method for air conditioner and electric heater

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20211231

RJ01 Rejection of invention patent application after publication