CN110986284A - Defrosting control method and device capable of continuously heating and air conditioner - Google Patents
Defrosting control method and device capable of continuously heating and air conditioner Download PDFInfo
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- CN110986284A CN110986284A CN201911277137.0A CN201911277137A CN110986284A CN 110986284 A CN110986284 A CN 110986284A CN 201911277137 A CN201911277137 A CN 201911277137A CN 110986284 A CN110986284 A CN 110986284A
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
Abstract
The invention provides a defrosting control method and device capable of continuously heating and an air conditioner, wherein the defrosting control method comprises the following steps: detecting a first number of target units and a second number of operating units in the target units, wherein the target units are used for heating; and controlling the running unit to alternately defrost according to the first quantity and the second quantity. According to the invention, the running units are controlled to alternately defrost according to the difference value between the number of the target units and the number of the units which are running, so that the outdoor unit in the target unit can alternately defrost, and the technical problem that the heating of an air conditioning system is influenced by defrosting in the related technology is solved.
Description
Technical Field
The invention relates to the field of communication, in particular to a defrosting control method and device capable of continuously heating and an air conditioner.
Background
At present, in a heat recovery multi-connected central air conditioning system, even in a system in which a plurality of external unit modules are combined, when an air conditioner is defrosted, the whole system can be in defrosting operation. The large amount of operating data indicates that the partial load operating time takes up a large portion of the time in the central air conditioning system. In most cases, when a system with a combination of a plurality of modules and an outdoor unit operates in winter for heating, not all the outdoor unit modules operate, but when an air conditioner performs defrosting, the modules which do not operate also enter the defrosting operation, so that the modules which do not operate for heating have no defrosting, and the indoor unit has no heating effect when the whole air conditioning system performs defrosting.
In view of the above technical problems in the related art, no effective solution has been proposed at present.
Disclosure of Invention
The embodiment of the invention provides a defrosting control method and device capable of continuously heating and an air conditioner, and at least solves the technical problem that an outdoor unit which is not operated in an air conditioning system enters defrosting in the related art.
According to an embodiment of the present invention, there is provided a defrosting control method capable of continuously heating, including: detecting a first number of target units and a second number of operating units in the target units, wherein the target units are used for heating; and controlling the running unit to alternately defrost according to the first quantity and the second quantity.
Optionally, controlling the operating unit to alternately defrost according to the first number and the second number includes: determining a numerical relationship between the first quantity and the second quantity; and controlling the running unit to alternately defrost based on the numerical relation.
Optionally, controlling the operating unit to alternately defrost based on the numerical relationship at least includes: if the second number is larger than the preset number and the first number is smaller than the second number, defrosting is carried out by switching the double four-way reversing valve of the operating unit, and the non-operating unit in the target unit is started to heat; otherwise, controlling the running unit to enter a defrosting running state.
Optionally, defrosting by switching the double four-way reversing valve of the operating unit includes: judging whether the operating unit meets defrosting conditions or not; and if the running unit meets the defrosting condition, setting the running state of the running unit to be a defrosting state.
Optionally, the determining whether the operating unit meets the defrosting condition includes: judging whether any external machine in the running unit meets defrosting conditions; if any external machine in the operating unit meets the defrosting condition, determining that the operating unit meets the defrosting condition; otherwise, the running unit does not meet the defrosting condition.
Optionally, after the operating state of the operating unit is set to the defrosting state, the method further includes: judging whether the total rated capacity C1 of the outdoor units in the running unit is less than or equal to the total rated capacity C2 of the outdoor units in the non-running unit; if the C1 is less than or equal to the C2, controlling the unit which is not operated to heat; switching a double four-way reversing valve of the operating unit to control the operating unit to defrost; otherwise, if the C1 is larger than the C2, controlling the unit which is not operated to heat; sequencing rated capacities of a plurality of external machines in the operating unit; and sequentially switching the double four-way reversing valves of the external units based on the sequence of the rated capacities so as to sequentially control the external units to defrost.
Optionally, after defrosting by switching the double four-way reversing valve of the operating unit and starting an inoperative unit in the target unit to heat, the method further includes: and after the defrosting operation of the running unit is finished, recovering the heating operation of the running unit.
According to an embodiment of the present invention, there is provided a defrosting control apparatus that can continuously heat, including: the system comprises a detection module, a control module and a control module, wherein the detection module is used for detecting a first number of target units and a second number of running units in the target units, and the target units are used for heating; and the control module is used for controlling the running unit to carry out rotation defrosting according to the first quantity and the second quantity.
Optionally, the control module includes: a determining unit for determining a numerical relationship between the first quantity and the second quantity; and the control unit is used for controlling the running unit to carry out rotation defrosting based on the numerical relation.
Optionally, the control unit includes: the control subunit is used for defrosting by switching the double four-way reversing valve of the operating unit and starting the non-operating unit in the target unit to heat if the second number is greater than the preset number and the first number is less than the second number; otherwise, controlling the running unit to enter a defrosting running state.
Optionally, the apparatus further comprises: the first judgment module is used for judging whether the operating unit meets defrosting conditions or not before defrosting is carried out by switching the double four-way reversing valve of the operating unit; and the setting module is used for setting the running state of the running unit into a state to be defrosted if the running unit meets the defrosting condition.
Optionally, the first determining module includes: the judging unit is used for judging whether any external machine in the running unit meets defrosting conditions; the processing unit is used for determining that the operating unit meets the defrosting condition if any external machine in the operating unit meets the defrosting condition; otherwise, the running unit does not meet the defrosting condition.
Optionally, the control subunit is configured to, after setting the operating state of the operating unit to the defrosting state, determine whether a total rated capacity C1 of the external units in the operating unit is less than or equal to a total rated capacity C2 of the external units in the non-operating unit; if the C1 is less than or equal to the C2, controlling the unit which is not operated to heat; switching a double four-way reversing valve of the operating unit to control the operating unit to defrost; otherwise, if the C1 is larger than the C2, controlling the unit which is not operated to heat; sequencing rated capacities of a plurality of external machines in the operating unit; and sequentially switching the double four-way reversing valves of the external units based on the sequence of the rated capacities so as to sequentially control the external units to defrost.
Optionally, after defrosting by switching the double four-way reversing valve of the operating unit and starting an inoperative unit in the target unit to heat, the apparatus further includes: and the execution module is used for recovering the heating operation of the running unit after the running unit finishes the defrosting operation.
According to a further embodiment of the present invention, there is also provided an air conditioner including the apparatus of any one of the above.
According to a further embodiment of the present invention, there is also provided a storage medium having a computer program stored therein, wherein the computer program is arranged to perform the steps of any of the above method embodiments when executed.
According to the invention, the running units are controlled to alternately defrost according to the difference value between the number of the target units and the number of the units running, so that the effect of continuous heating can be realized, and the technical problem of influence on heating due to defrosting in the related technology is solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
fig. 1 is a block diagram of a hardware structure of a mobile terminal to which a defrosting control method capable of continuously heating according to an embodiment of the present invention is applied;
fig. 2 is a flowchart of a defrosting control method capable of continuously heating according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a heat recovery multiple air conditioning system provided in accordance with an embodiment of the present invention;
FIG. 4 is a flow chart providing a change of frost according to an embodiment of the present invention;
FIG. 5 is a schematic flow diagram of a change-over frost provided in accordance with an embodiment of the present invention;
fig. 6 is a schematic flow diagram of a refrigerant flow direction for defrosting by turns of a heat recovery multi-connected air conditioning system according to an embodiment of the present invention;
fig. 7 is a block diagram of a defrosting control device capable of continuously heating according to an embodiment of the present invention.
Description of the drawings: 1. a compressor; 2. an oil separator; 3. a heating four-way valve; 4. a refrigeration four-way valve; 5. an outdoor condenser; 6. an outdoor heating electronic expansion valve; 7. a gas-liquid separator; 8. a refrigeration solenoid valve; 9. a heating electromagnetic valve; 10. an electronic expansion valve of the indoor unit; 11. an indoor unit evaporator.
Detailed Description
The invention will be described in detail hereinafter with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
Example 1
The method provided by the first embodiment of the present application may be executed in a mobile terminal, a computer terminal, or a similar computing device. Taking the operation on the mobile terminal as an example, fig. 1 is a block diagram of a hardware structure of the mobile terminal to which the defrosting control method capable of continuously heating is applied according to the embodiment of the present invention. As shown in fig. 1, the mobile terminal may include one or more (only one shown in fig. 1) processors 102 (the processor 102 may include, but is not limited to, a processing device such as a microprocessor MCU or a programmable logic device FPGA) and a memory 104 for storing data, and optionally may also include a transmission device 106 for communication functions and an input-output device 108. It will be understood by those skilled in the art that the structure shown in fig. 1 is only an illustration, and does not limit the structure of the mobile terminal. For example, the mobile terminal may also include more or fewer components than shown in FIG. 1, or have a different configuration than shown in FIG. 1.
The memory 104 may be used to store a computer program, for example, a software program and a module of an application software, such as a computer program corresponding to a defrosting control method that can continuously heat according to an embodiment of the present invention, and the processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, so as to implement the method. The memory 104 may include high speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include memory located remotely from the processor 102, which may be connected to the mobile terminal over a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The transmission device 106 is used for receiving or transmitting data via a network. Specific examples of the network described above may include a wireless network provided by a communication provider of the mobile terminal. In one example, the transmission device 106 includes a Network adapter (NIC), which can be connected to other Network devices through a base station so as to communicate with the internet. In one example, the transmission device 106 may be a Radio Frequency (RF) module, which is used for communicating with the internet in a wireless manner.
Aiming at the technical problem that heating of an air conditioning system is affected by defrosting in the related art, the invention provides a defrosting control method capable of continuously heating, and fig. 2 is a flowchart of the defrosting control method capable of continuously heating according to an embodiment of the invention, and as shown in fig. 2, the flowchart includes the following steps:
step S202, detecting a first quantity of target units and a second quantity of running units in the target units, wherein the target units are used for heating;
and step S204, controlling the running unit to alternately defrost according to the first quantity and the second quantity.
Optionally, the technical solution of the present invention is applied to a heat recovery multiple air conditioning system, as shown in fig. 3, fig. 3 is a schematic structural diagram of the heat recovery multiple air conditioning system provided according to the embodiment of the present invention; the main body for executing the above steps may be a main control chip in the air conditioning system, but is not limited thereto.
Through the embodiment, the running units are controlled to alternately defrost according to the difference value between the number of the target units and the number of the units running, so that the continuous heating effect of the heat recovery multi-connected air conditioning system can be realized, and the technical problem of influence on heating due to defrosting in the related technology is solved.
In an optional embodiment, controlling the operating units to alternately defrost according to the first number and the second number comprises: determining a numerical relationship between the first quantity and the second quantity; and controlling the running unit to alternately defrost based on the numerical relation.
In the heat recovery multi-connected air conditioning system in this embodiment, a plurality of outdoor units are used for heating, and by detecting a difference (i.e., the numerical relationship) between the number (i.e., the first number) of the outdoor unit modules (i.e., the operating units) in heating operation and the number (i.e., the second number) of the online outdoor unit modules (i.e., the target units), the separable modules alternately defrost when the heat recovery multi-connected air conditioning system composed of two or more outdoor unit modules is used for heating, thereby achieving the purpose of continuous heating.
In one embodiment of the present disclosure, controlling the operating units to alternately defrost based on the numerical relationship at least includes: if the second number is larger than the preset number and the first number is smaller than the second number, defrosting is carried out through a double four-way reversing valve of the switching operation unit, and the non-operation unit in the target unit is started to heat; otherwise, controlling the running unit to enter a defrosting running state.
In an embodiment of the present disclosure, assuming that the preset number in this embodiment is 1, if the second number is greater than 1 and the first number is smaller than the second number, it can be understood that a heat recovery multi-connected air conditioning system composed of two or more external unit modules is used, and defrosting is performed by turns through switching the double four-way reversing valves of the operating units, and switching between heating and defrosting is achieved by using the characteristics of the double four-way reversing valves of the three-pipe heat recovery air conditioning system; and if the first quantity and the second quantity are both 1, controlling the first external machine of the operating unit to enter a common defrosting operation state when the first external machine meets defrosting conditions.
According to the above embodiment, fig. 4 is a flow chart for alternately defrosting according to an embodiment of the present invention, and as shown in fig. 4, when the heat recovery multi-split air conditioning system is heating, the method includes the following steps:
step S401, detecting and recording online outdoor unit data m (namely the first number of the target unit) and the number n of operating outdoor units (namely the second number of the operating unit);
step S403, judging the numerical relationship between the number n of the running outdoor units and the online outdoor unit data m; if m >1 and n < m, go to step S405; otherwise, step S407 is executed, and the system performs control according to normal defrosting.
In an embodiment of the present disclosure, when m >1 and n < m, the operating unit is controlled to enter alternate defrosting, as shown in fig. 5, fig. 5 is a schematic flow chart of alternate defrosting according to an embodiment of the present invention, and the alternate defrosting is further described below with reference to the flow chart of fig. 5.
Optionally, defrosting by switching a double four-way reversing valve of the operating unit includes: judging whether the running unit meets defrosting conditions or not; and if the running unit meets the defrosting condition, setting the running state of the running unit as a state to be defrosted.
In this embodiment, whether the running heating external unit (i.e., the running unit) meets the defrosting condition is detected by the main control chip; if the heating external units meet the defrosting condition, setting the operation states of all the heating external units to be in a defrosting state, for example, marking the operation states to be in a 1 state, and indicating that the heating external units are ready to enter the defrosting state.
According to the embodiment, the step of judging whether the running unit meets the defrosting condition comprises the following steps: judging whether any outdoor unit in the running unit meets defrosting conditions; if any external machine in the operating unit meets the defrosting condition, determining that the operating unit meets the defrosting condition; otherwise, the running unit does not meet the defrosting condition.
As shown in fig. 5, in step S504, it is determined whether any of the heating operation external units satisfies the defrosting condition. Whether the running unit meets the defrosting condition or not is judged, and whether one of the outdoor units in all the heating units meets the defrosting condition or not is judged; if one outdoor unit meets the defrosting condition, executing the step S506, and marking all heating outdoor units as the states to be defrosted; otherwise, the operating unit does not meet the defrosting condition, and the system continues to operate the external unit of the heating unit for heating.
Optionally, after the operating state of the operating unit is set to the state to be defrosted, the method further includes: judging whether the total rated capacity C1 of the outdoor units in the running unit is less than or equal to the total rated capacity C2 of the outdoor units in the non-running unit; if the C1 is less than or equal to C2, controlling the unit which is not operated to heat; switching a double four-way reversing valve of the operating unit to control the operating unit to defrost; otherwise, if the C1 is larger than the C2, controlling the unit which is not operated to heat; sequencing rated capacities of a plurality of external machines in an operating unit; and sequentially switching the double four-way reversing valves of the external units based on the sequence of the rated capacities so as to sequentially control the external units to defrost.
After the three-pipe heating recovery air conditioning system is used for alternately defrosting by switching the operating units through the double four-way reversing valves, as shown in fig. 5, after the heating units meet defrosting conditions, if the marks of outdoor units of all the heating units to be defrosted are set to be 1 at the moment, the step S508 is executed, whether the total rated capacity C2 of the outdoor units which are not operated is greater than or equal to the total rated capacity C1 of the heating operating outdoor units is judged, and different defrosting modes are entered according to the relationship between C1 and C2.
If C1> C2, step S510 is executed, and all the out-of-service units that are not in operation start to operate for heating.
And S512, reversing the refrigeration four-way valve of the outdoor unit to be defrosted to defrost. And the heating unit is controlled to enter a defrosting operation state by switching the double four-way reversing valve of the operation unit.
Step S514, judging whether the defrosting external machine meets the defrosting exiting condition; if the defrosting external machine meets the condition of exiting defrosting, executing the step S516; otherwise, continuing to judge.
Optionally, after defrosting by switching the double four-way reversing valve of the operating unit and starting an inoperative unit in the target unit to heat, the method further includes: and after the defrosting operation of the running unit is finished, the heating operation of the running unit is recovered.
In step S516, the defrosting control is ended, and the other controls are resumed. After all heating units finish defrosting operation, the operation of heating of the heating units is recovered, so that after the heating units enter a defrosting mode, the heating units are started to heat the units which are not operated, the indoor heating effect is ensured, and after defrosting is finished, the heating function is recovered, so that the continuous heating effect is realized, and the technical problem that heating is influenced by defrosting in the related art is solved.
Optionally, the total rated capacity of the heating-operation outdoor unit and the total rated capacity of the non-operation outdoor unit in this embodiment are respectively marked as C1 and C2, and before the non-operation unit is started to perform heating, if the system meets the alternate defrosting control condition, the main controller respectively calculates the total rated capacity C1 of the heating-operation outdoor unit and the total rated capacity C2 of the non-start-operation outdoor unit.
As shown in FIG. 5, if the "to-be-defrosted" flag of all the outdoor units in the heat recovery multi-connected air conditioning system is set to "1" and C2 ≧ C1 is not established, step S510 is executed, and all the outdoor units not in operation start to heat.
Step S518, the rated capacities of the external units in the state to be defrosted are sequenced, and the external unit with the minimum rated capacity enters defrosting. The main control sorts the rated capacity of the outdoor unit in a state of waiting for defrosting; optionally, the outdoor unit with the minimum rated capacity enters defrosting.
Further, step S520 is executed, and the four-way valve of the defrosting outdoor unit is reversed. And defrosting is carried out by switching the refrigeration four-way valve of the outdoor unit with the minimum rated capacity for reversing, and the mark position of the outdoor unit module for defrosting is eliminated.
Further, step S522 is executed to determine whether the outdoor unit meets the defrosting exit condition, and if the outdoor unit meets the defrosting exit condition, step S524 is executed; otherwise, continuing to judge.
Further, in step S524, the four-way valve of the defrosting outdoor unit is reversed.
Step 526, whether the defrosting external machine meets the defrosting exiting condition or not; if the outdoor unit which is defrosting meets the condition of quitting defrosting, executing the step S516, and recovering heating operation; otherwise, step S518 is performed.
Step S518, if the external machine that is defrosting at this time meets the condition of exiting from defrosting and then resuming heating operation, determining whether all external machine modules to be defrosted have finished defrosting, if yes, ending defrosting control and resuming normal heating control, otherwise, returning to the step of sorting the rated capacity of the external machine in the state of "to be defrosted" and continuing defrosting.
Through the embodiment, the characteristics of the double four-way reversing valves of the three-pipe heating recovery air-conditioning system are utilized, and the difference value between the number of the outdoor unit modules in heating operation and the number of the on-line outdoor unit modules is detected, so that when the heat recovery multi-connected air-conditioning system consisting of two or more outdoor unit modules is operated to heat part of loads, the heating operation modules are sequentially divided into modules from small to large according to rated capacity to alternately defrost, the heating modules are not operated to heat, and when the outdoor unit defrosting is achieved, the indoor heating effect is not influenced.
The invention will be further described with reference to a specific example:
as shown in fig. 3, when the heat recovery air conditioning system is in partial load heating, the outdoor unit 1 is in heating operation, the outdoor unit 2 is in non-operation state (when the outdoor unit 1 is normally heated, the four-way valve is reversed after the outdoor unit 1 is started, which means that the four-way valves for cooling and heating of the non-operation outdoor unit 2 are identical to the state of the corresponding four-way valve of the outdoor unit 1), the low-temperature and low-pressure gaseous refrigerant in the system is compressed by the compressor 1 of the outdoor unit 1 to become high-temperature and high-pressure gaseous refrigerant, and is discharged into the high-pressure gas pipe through the four-way valve for heating 3, D → C, and then enters the indoor unit evaporator 11 for condensation through the mode converter heating solenoid valve 9, so as to heat the indoor air, and the condensed refrigerant is throttled by the indoor unit electronic expansion valve 10 and the outdoor unit heating electronic expansion valve 6, then the gas-liquid separation is carried out in the gas-liquid separator 7 through the refrigeration four-way valve 4, E → S, and the separated low-temperature low-pressure gaseous refrigerant enters the compressor 1 for compression, thus completing the circulation.
If the outdoor unit 1 meets the defrosting condition, marking the outdoor unit 1 in a state of waiting for defrosting, and judging whether the rated capacity C2 of the outdoor unit 2 is larger than or equal to the rated capacity C1 of the outdoor unit 1; if C2 < C1, the outdoor unit 2 starts to operate for heating, and the four-way cooling valve 4 of the outdoor unit 1 is switched to D → C (since there are only 1 outdoor unit to be defrosted, it is the minimum rated outdoor unit). As shown in fig. 6, the refrigerant flow directions of the outdoor unit 1 and the outdoor unit 2 are as follows, and fig. 6 is a schematic diagram of the refrigerant flow directions for defrosting by turns of a heat recovery multi-type air conditioning system according to an embodiment of the present invention.
If the outdoor unit 1 meets the condition of exiting defrosting, the four-way cooling valve of the outdoor unit 1 is reversed again, the heating operation is recovered, and whether all outdoor unit modules to be defrosted are defrosted completely is judged, for the example, only 1 outdoor unit module to be defrosted meets the condition, the defrosting control is finished, and the normal operation is recovered.
Example 2
In this embodiment, a defrosting control device capable of continuously heating is further provided, and the device is used to implement the foregoing embodiments and preferred embodiments, and the description of the device is omitted. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated.
Fig. 7 is a block diagram of a defrosting control apparatus that can continuously generate heat according to an embodiment of the present invention, as shown in fig. 7, the apparatus includes: the detecting module 70 is configured to detect a first number of target units and a second number of operating units in the target units, where the target units are used for heating; and the control module 72 is connected with the detection module 70 and is used for controlling the running unit to alternately defrost according to the first quantity and the second quantity.
Optionally, the control module 72 includes: a determining unit for determining a numerical relationship between the first quantity and the second quantity; and the control unit is used for controlling the running unit to carry out rotation defrosting based on the numerical relation.
Optionally, the control unit includes: the control subunit is used for alternately defrosting by switching the double four-way reversing valves of the operating units and starting the non-operating units in the target unit to heat if the second number is greater than the preset number and the first number is less than the second number; otherwise, controlling the running unit to enter a defrosting running state.
Optionally, the apparatus further comprises: the first judgment module is used for judging whether the running unit meets the defrosting condition before defrosting through the double four-way reversing valve of the switching running unit; and the setting module is used for setting the running state of the running unit into a state to be defrosted if the running unit meets the defrosting condition.
Optionally, the first determining module includes: the judging unit is used for judging whether any external machine in the running unit meets defrosting conditions; the processing unit is used for determining that the running unit meets the defrosting condition if any external machine in the running unit meets the defrosting condition; otherwise, the running unit does not meet the defrosting condition.
Optionally, the control subunit is configured to, after setting the operating state of the operating unit to the defrosting state, determine whether a total rated capacity C1 of the external units in the operating unit is less than or equal to a total rated capacity C2 of the external units in the non-operating unit; if the C1 is less than or equal to C2, controlling the unit which is not operated to heat; switching a double four-way reversing valve of the operating unit to control the operating unit to defrost; otherwise, if the C1 is larger than the C2, controlling the unit which is not operated to heat; sequencing rated capacities of a plurality of external machines in an operating unit; and sequentially switching the double four-way reversing valves of the external units based on the sequence of the rated capacities so as to sequentially control the external units to defrost.
Optionally, after defrosting is performed by switching the double four-way reversing valve of the operating unit and the non-operating unit in the target unit is started to heat, the apparatus further includes: and the execution module is used for recovering the heating operation of the running unit after the running unit finishes the defrosting operation.
It should be noted that, the above modules may be implemented by software or hardware, and for the latter, the following may be implemented, but not limited to: the modules are all positioned in the same processor; alternatively, the modules are respectively located in different processors in any combination.
Example 3
Embodiments of the present invention also provide a storage medium having a computer program stored therein, wherein the computer program is arranged to perform the steps of any of the above method embodiments when executed.
Alternatively, in the present embodiment, the storage medium may be configured to store a computer program for executing the steps of:
s1, detecting a first number of target units and a second number of running units in the target units, wherein the target units are used for heating;
and S2, controlling the running unit to perform rotation defrosting according to the first quantity and the second quantity.
Optionally, in this embodiment, the storage medium may include, but is not limited to: various media capable of storing computer programs, such as a usb disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic disk, or an optical disk.
It will be apparent to those skilled in the art that the modules or steps of the present invention described above may be implemented by a general purpose computing device, they may be centralized on a single computing device or distributed across a network of multiple computing devices, and alternatively, they may be implemented by program code executable by a computing device, such that they may be stored in a storage device and executed by a computing device, and in some cases, the steps shown or described may be performed in an order different than that described herein, or they may be separately fabricated into individual integrated circuit modules, or multiple ones of them may be fabricated into a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the principle of the present invention should be included in the protection scope of the present invention.
Claims (12)
1. A defrosting control method is characterized by comprising the following steps:
detecting a first number of target units and a second number of operating units in the target units, wherein the target units are used for heating;
and controlling the running unit to alternately defrost according to the first quantity and the second quantity.
2. The method of claim 1, wherein controlling the operating crew to rotate for defrosting based on the first quantity and the second quantity comprises:
determining a numerical relationship between the first quantity and the second quantity;
and controlling the running unit to alternately defrost based on the numerical relation.
3. The method of claim 2, wherein controlling the operating train to rotate defrosting based on the numerical relationship comprises:
if the second number is larger than the preset number and the first number is smaller than the second number, defrosting is carried out by switching the double four-way reversing valve of the operating unit, and the non-operating unit in the target unit is started to heat; otherwise, controlling the running unit to enter a defrosting running state.
4. The method of claim 3, wherein defrosting by switching a double four-way reversing valve of the operating train comprises:
judging whether the operating unit meets defrosting conditions or not;
and if the running unit meets the defrosting condition, setting the running state of the running unit to be a defrosting state.
5. The method of claim 4, wherein the determining whether the operating unit meets a defrosting condition comprises:
judging whether any external machine in the running unit meets defrosting conditions;
if any external machine in the operating unit meets the defrosting condition, determining that the operating unit meets the defrosting condition; otherwise, the running unit does not meet the defrosting condition.
6. The method according to claim 4, wherein after setting the operating state of the operating unit to a defrosting state, the method further comprises:
judging whether the total rated capacity C1 of the outdoor units in the running unit is less than or equal to the total rated capacity C2 of the outdoor units in the non-running unit;
if the C1 is less than or equal to the C2, controlling the unit which is not operated to heat; switching a double four-way reversing valve of the operating unit to control the operating unit to defrost; if not, then,
if the C1 is larger than the C2, controlling the unit which is not operated to heat; sequencing rated capacities of a plurality of external machines in the operating unit; and sequentially switching the double four-way reversing valves of the external units based on the sequence of the rated capacities so as to sequentially control the external units to defrost.
7. The method of claim 6, wherein after defrosting by switching a double four-way reversing valve of the operating unit and starting an inactive unit of the target units for heating, the method further comprises: and after the defrosting operation of the running unit is finished, recovering the heating operation of the running unit.
8. A defrosting control apparatus characterized by comprising:
the system comprises a detection module, a control module and a control module, wherein the detection module is used for detecting a first number of target units and a second number of running units in the target units, and the target units are used for heating;
and the control module is used for controlling the running unit to carry out rotation defrosting according to the first quantity and the second quantity.
9. The apparatus of claim 8, wherein the control module comprises:
a determining unit for determining a numerical relationship between the first quantity and the second quantity;
and the control unit is used for controlling the running unit to carry out rotation defrosting based on the numerical relation.
10. The device according to claim 9, characterized in that said control unit comprises at least:
the control subunit is used for defrosting by switching the double four-way reversing valve of the operating unit and starting the non-operating unit in the target unit to heat if the second number is greater than the preset number and the first number is less than the second number; otherwise, controlling the running unit to enter a defrosting running state.
11. An air conditioner characterized in that it comprises a device according to any one of claims 8-10.
12. A storage medium, in which a computer program is stored, wherein the computer program is arranged to perform the method of any of claims 1 to 7 when executed.
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