CN114061106A - Control method, device and equipment of air conditioning system and storage medium - Google Patents
Control method, device and equipment of air conditioning system and storage medium Download PDFInfo
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- CN114061106A CN114061106A CN202111410439.8A CN202111410439A CN114061106A CN 114061106 A CN114061106 A CN 114061106A CN 202111410439 A CN202111410439 A CN 202111410439A CN 114061106 A CN114061106 A CN 114061106A
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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
- F24F11/65—Electronic processing for selecting an operating mode
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The invention discloses a control method, a control device, control equipment and a storage medium of an air conditioning system, and belongs to the technical field of air conditioners. When the air conditioning system operates in a heating mode, the first heat exchange system is controlled to operate without frosting, and the second heat exchange system operates in a heating mode; when the second heat exchange system meets the defrosting condition, the second heat exchange system is controlled to enter a defrosting mode, the heating device is controlled to heat and the indoor fan rotates, and when defrosting is carried out through the second heat exchange system, the indoor fan and the heating device are combined to preheat fresh air, so that the heating effect is improved.
Description
Technical Field
The present invention relates to the field of air conditioner technologies, and in particular, to a method, an apparatus, a device, and a storage medium for controlling an air conditioning system.
Background
In a radiation system, cold and hot water is prepared by a heat pump host, is conveyed to an indoor ceiling or floor water pipe, and then exchanges heat with the indoor in a radiation heat exchange and natural convection heat exchange mode; and the treatment such as replacement, dehumidification, humidification, purification of indoor air is realized through the new trend system to reach comfortable, healthy purpose. When the heat pump host computer is defrosting among the prior art, the new fan can't normally supply and preheat the new trend, has reduced the heating effect.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide a control method, a control device, control equipment and a storage medium of an air conditioning system, and aims to solve the technical problems that fresh air cannot be preheated when a heat pump host in the prior art defrosts, and the heating effect is reduced.
In order to achieve the above object, the present invention provides a control method of an air conditioning system, the air conditioning system includes a first heat exchange system, a second heat exchange system, an indoor fan and a heating device, the air conditioning system includes an indoor fresh air fan, the indoor fresh air fan includes the first indoor heat exchanger, the indoor fan and the heating device; the control method comprises the following steps:
when the air conditioning system operates in a heating mode, controlling the first heat exchange system to operate without frosting and the second heat exchange system to operate in a heating mode;
and when the second heat exchange system meets the defrosting condition, controlling the second heat exchange system to enter a defrosting mode, and controlling the heating device to heat and the indoor fan to rotate.
Optionally, the control method further includes:
acquiring the air outlet temperature of the indoor fresh air fan; and
and adjusting at least one of the rotating speed of the indoor fan and the heating power of the heating device according to the outlet air temperature.
Optionally, the adjusting at least one of the rotation speed of the indoor fan and the heating power of the heating device according to the outlet air temperature includes:
and when the air outlet temperature is lower than a first preset temperature, reducing the rotating speed of the indoor fan and/or improving the heating power of the heating device.
Optionally, the control method further includes:
when the second heat exchange system is in heating operation, acquiring the air outlet temperature of the indoor new fan; and
and when the air outlet temperature is lower than a second preset temperature, starting the heating device to raise the air outlet temperature to the second preset temperature.
Optionally, the air conditioning system further includes an outdoor fan, the first heat exchange system includes a first compressor, a first throttling component, a first outdoor heat exchanger and a first indoor heat exchanger, the second heat exchange system includes a second compressor, a second throttling component, a second outdoor heat exchanger and a second indoor heat exchanger, and the outdoor fan is configured to exchange heat with the first outdoor heat exchanger and the second outdoor heat exchanger, and the control method further includes:
and when the second heat exchange system meets the defrosting condition, closing the first heat exchange system.
Optionally, the controlling the first heat exchange system to operate without frost includes:
acquiring an outdoor environment temperature and a coil temperature of the first outdoor heat exchanger; and
when the outdoor environment temperature is greater than or equal to a first temperature and the coil temperature is less than or equal to a second temperature, the rotating speed of the first compressor is reduced, so that the coil temperature is greater than the second temperature.
Optionally, the control method further includes:
when the outdoor environment temperature is lower than a first temperature, acquiring an outdoor dew point temperature; and
when the temperature difference between the coil temperature and the outdoor dew point temperature is less than a third temperature, the rotational speed of the first compressor is reduced so that the temperature difference is greater than the third temperature.
In addition, in order to achieve the above object, the present invention further provides a control device of an air conditioning system, where the air conditioning system includes a first heat exchange system, a second heat exchange system, an indoor fan and a heating device, the air conditioning system includes an indoor fresh air fan, and the indoor fresh air fan includes the first indoor heat exchanger, the indoor fan and the heating device; the control device includes:
the control module is used for controlling the first heat exchange system to run without frosting and the second heat exchange system to run for heating when the air conditioning system runs in a heating mode; and
and the judging module is used for controlling the second heat exchange system to enter a defrosting mode and controlling the heating device to heat and the indoor fan to rotate when the second heat exchange system meets defrosting conditions.
Further, to achieve the above object, the present invention also proposes a control device of an air conditioning system, including: the control method comprises the steps of storing a control program of the air conditioning system, wherein the control program of the air conditioning system is stored in the memory and can run on the processor, and the control program of the air conditioning system is configured to realize the control method of the air conditioning system.
In addition, in order to achieve the above object, the present invention further provides a storage medium having a control program of an air conditioning system stored thereon, which when executed by a processor, implements the control method of the air conditioning system as described above.
When the air conditioning system operates in a heating mode, the first heat exchange system is controlled to operate without frosting, and the second heat exchange system operates in a heating mode; when the second heat exchange system meets the defrosting condition, the second heat exchange system is controlled to enter a defrosting mode, the heating device is controlled to heat and the indoor fan rotates, and when defrosting is carried out through the second heat exchange system, the indoor fan and the heating device are combined to preheat fresh air, so that the heating effect is improved.
Drawings
Fig. 1 is a schematic structural diagram of a control device of an air conditioning system in a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart illustrating a control method of an air conditioning system according to a first embodiment of the present invention;
FIG. 3 is a schematic structural diagram of an air conditioning system according to an embodiment of a method for controlling an air conditioning system of the present invention;
FIG. 4 is a flowchart illustrating a control method of an air conditioning system according to a second embodiment of the present invention;
FIG. 5 is a flowchart illustrating a control method of an air conditioning system according to a third embodiment of the present invention;
fig. 6 is a block diagram showing the configuration of the control device of the air conditioning system according to the first embodiment of the present invention.
Description of reference numerals:
| 100 | indoor fresh air machine | 24 | |
| 200 | |
25 | |
| 300 | Heat |
26 | |
| 11 | |
27 | Second four- |
| 12 | First |
28 | Second |
| 21 | |
29 | Second throttling |
| 22 | First four- |
31 | Second |
| 23 | First |
13 | Heating device |
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 structural diagram of a control device of an air conditioning system in a hardware operating environment according to an embodiment of the present invention.
As shown in fig. 1, the control apparatus of the air conditioning system may include: a processor 1001, such as a Central Processing Unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a Wireless interface (e.g., a Wireless-Fidelity (Wi-Fi) interface). The Memory 1005 may be a Random Access Memory (RAM) Memory, or may be a Non-Volatile Memory (NVM), such as a disk Memory. The memory 1005 may alternatively be a storage device separate from the processor 1001.
Those skilled in the art will appreciate that the configuration shown in fig. 1 does not constitute a limitation of the control device of the air conditioning system and may include more or fewer components than those shown, or some components in combination, or a different arrangement of components.
As shown in fig. 1, a memory 1005, which is one type of storage medium, may include therein an operating system, a network communication module, a user interface module, and a control program of an air conditioning system.
In the control device of the air conditioning system shown in fig. 1, the network interface 1004 is mainly used for data communication with a network server; the user interface 1003 is mainly used for data interaction with a user; the processor 1001 and the memory 1005 in the control device of the air conditioning system of the present invention may be provided in the control device of the air conditioning system, which calls the control program of the air conditioning system stored in the memory 1005 through the processor 1001 and executes the control method of the air conditioning system provided by the embodiment of the present invention.
An embodiment of the present invention provides a control method for an air conditioning system, and referring to fig. 2, fig. 2 is a schematic flowchart of a first embodiment of the control method for the air conditioning system according to the present invention.
In this embodiment, the control method of the air conditioning system includes the following steps:
step S10: and when the air conditioning system operates in a heating mode, controlling the first heat exchange system not to frost and the second heat exchange system to heat.
In this embodiment, the execution main body of this embodiment may be a control device of an air conditioning system, the control device of the air conditioning system may be an electronic device such as a personal computer or a server, or may be another controller capable of realizing the same or similar functions.
It should be noted that the control method of the air conditioning system in this embodiment is applied to an air conditioning system, and the air conditioning system includes a first heat exchange system and a second heat exchange system, where the first heat exchange system may include a fresh air machine, and the second heat exchange system may include a heat pump host. The heat pump host machine is used for preparing cold water and hot water, conveying the cold water to an indoor ceiling or floor water pipe, and then exchanging heat with the indoor in a radiation heat exchange and natural convection heat exchange mode, and a fresh air machine in the heat supply system can enable indoor air to circulate, so that on one hand, dirty indoor air is discharged outdoors, on the other hand, outdoor fresh air is input indoors after measures such as sterilization, disinfection and filtration, and the air in the room is fresh and clean air at all times.
It is easy to understand that, the fresh air machine and the heat pump main machine are similar to the air conditioner and also have corresponding outdoor units, when heating is performed in winter, the outdoor units also have the condition of frosting, and in the prior art, when defrosting is performed, the fresh air machine and the heat pump main machine have the condition of defrosting at different times, for example, the heat pump main machine performs defrosting alone, or the fresh air machine performs defrosting alone. Among the prior art, when the heat pump host computer defrosted alone, although the new fan did not defrost, the defrosting of heat pump host computer can lead to the new fan can't normally preheat the new trend to indoor supply, and the supply of new trend this moment can be interrupted.
In order to solve the above problems, in this embodiment, the structure of the air conditioning system is improved, and as shown in fig. 3, the first heat exchange system is formed by connecting in series a first compressor 21, a first four-way valve 22, a first outdoor heat exchanger 23, a first throttling element 24, and a first indoor heat exchanger 12, and forms a refrigerant loop of the fresh air blower. The indoor fresh air machine 100 is an indoor part corresponding to the first heat exchange system, and is provided with an indoor fan 11. The second heat exchange system is formed by connecting a second compressor 26, a second four-way valve 27, a second outdoor heat exchanger 28, a second throttling part 29 and a second indoor heat exchanger 31 in series, and forms a refrigerant circuit of the heat pump main unit. The heat pump radiation end 300 is the corresponding indoor part of the second heat exchange system.
The first heat exchange system and the second heat exchange system in fig. 3 are integrated, and are disposed in the same outdoor unit 200 and have a common outdoor fan 25. Further, the number of the outdoor fans 25 may be one or multiple, and the outdoor fans may be set accordingly according to actual situations, which is not limited in this embodiment.
Further, a heating operation process of the air conditioning system is described by taking fig. 3 as an example. When heating operation is performed, the exhaust gas of the first compressor 21 of the first heat exchange system enters the first indoor heat exchanger 12 for condensation, is subjected to pressure reduction through the first throttling part 24, and then enters the first outdoor heat exchanger 23 for evaporation and heat absorption, so that a heating cycle is completed; the exhaust gas of the second compressor 26 of the second heat exchange system enters the second indoor heat exchanger 31 for condensation, passes through the second throttling part 29 for pressure reduction, and then enters the second outdoor heat exchanger 28 for evaporation and heat absorption, so that the heating cycle is completed. The first heat exchange system and the second heat exchange system can heat the indoor space, and the condensation temperatures of the first heat exchange system and the second heat exchange system can be the same or different.
Further, the air conditioning system in this embodiment can also realize refrigeration operation, and during the refrigeration operation, the first compressor 21 of the first heat exchange system exhausts air to enter the first outdoor heat exchanger 23 for condensation, and then enters the first indoor heat exchanger 12 for evaporation and heat absorption after passing through the first throttling component 24 for pressure reduction, thereby completing the refrigeration cycle; the second compressor 26 of the second heat exchange system exhausts air and enters a second outdoor heat exchanger 28 for condensation, and then enters a second indoor heat exchanger 31 for evaporation and heat absorption after passing through a second throttling part 29 for pressure reduction, thereby completing the refrigeration cycle. When the first heat exchange system dehumidifies and cools the indoor, the temperature is low (any value between 3 ℃ and 15 ℃), and the second heat exchange system cools the indoor only and is high (any value between 7 ℃ and 20 ℃).
It should be noted that, the air conditioning system in this embodiment is mainly based on the first heat exchange system, that is, the new fan heats, and the second heat exchange system is assisted, so when the whole air conditioning system operates in the heating mode, the first heat exchange system does not frost and operates, and the second heat exchange system heats and operates at the same time. When the defrosting is carried out alone to second heat transfer system, can influence whole air conditioning system's heating effect, to this kind of condition, can adjust heating device correspondingly in this embodiment, before this, need to change the frost to second heat transfer system and judge. Specifically, the temperature of the heat exchanger of the second heat exchange system may be compared with the frosting temperature, and if the temperature of the heat exchanger is less than the frosting temperature, it may be determined that frosting exists, for example, when the temperature of the second outdoor heat exchanger corresponding to the second heat exchange system is less than the frosting temperature, it is determined that the second heat exchange system needs to be frosted.
Step S20: and when the second heat exchange system meets the defrosting condition, controlling the second heat exchange system to enter a defrosting mode, and controlling the heating device to heat and the indoor fan to rotate.
In concrete implementation, after the judgement of changing frost, if second heat transfer system satisfies the condition of changing frost, also when second heat transfer system need change frost, can control second heat transfer system and get into the mode of changing frost in this embodiment, open heating device and indoor fan, indoor fan continues to rotate, and heating device can promote the new trend temperature, preheats the new trend when realizing that second heat transfer system changes frost. Specifically, when the second heat exchange system is operated for defrosting, the second heat exchange system is operated for cooling, that is, when the second heat exchange system is operated for cooling, the flow direction of the refrigerant in the second heat exchange system is opposite to the flow direction of the refrigerant in the second heat exchange system in the heating operation, so that the second indoor heat exchanger is cooled and the second outdoor heat exchanger is heated.
Further, after the second heat exchange system is controlled to enter the defrosting mode, if the outdoor fan is used for exchanging heat for the first outdoor heat exchanger and the second outdoor heat exchanger, the first heat exchange system can be closed to avoid taking away heat of the second outdoor heat exchanger, so that defrosting time is too long, a specific mode can be selected according to actual conditions, and the defrosting mode is not limited in this embodiment.
It is easy to understand that, when the second heat exchange system meets the defrosting exit condition, that is, after the second heat exchange system completes defrosting, the outdoor fan and the first compressor are started, and the second heat exchange system and the first heat exchange system are controlled to start heating operation. It should be emphasized that, after the outdoor fan and the first compressor are turned on, the heating device may be selected to be turned off temporarily or turned on continuously in this embodiment, and the selection may be performed according to the actual requirement of the user, which is not limited in this embodiment.
In this embodiment, when the air conditioning system operates in a heating mode, the first heat exchange system is controlled to operate without frosting, and the second heat exchange system operates in a heating mode; when the second heat exchange system meets the defrosting condition, the second heat exchange system is controlled to enter a defrosting mode, the heating device is controlled to heat and the indoor fan rotates, and when defrosting is carried out through the second heat exchange system, the indoor fan and the heating device are combined to preheat fresh air, so that the heating effect is improved.
Referring to fig. 3, fig. 3 is a flowchart illustrating a control method of an air conditioning system according to a second embodiment of the present invention.
Based on the first embodiment, the method for controlling the air conditioning system of the present embodiment further includes, after the step S20:
step S30: and acquiring the air outlet temperature of the indoor fresh air machine.
In specific implementation, after the second heat exchange system enters the defrosting mode, the heating effect of the first heat exchange system is affected, and the air outlet temperature of the indoor fresh air machine is mainly affected, for example, the air outlet temperature of the indoor fresh air machine is reduced, and therefore in this embodiment, after the second heat exchange system enters the defrosting mode, the air outlet temperature corresponding to the indoor fresh air machine is monitored.
It is easy to understand that, when the outlet air temperature of the indoor fresh air machine is reduced, if the room temperature is already high or the heat preservation effect is good, the experience of the user is not affected, so that the user can determine whether to obtain the outlet air temperature of the indoor fresh air machine and make corresponding adjustment on the operation of the air conditioning system. Specifically, in this embodiment, the outlet air temperature of the indoor fresh air fan may be obtained based on a monitoring instruction input by a user, and of course, a preset time may also be set, for example, when the second heat exchange system starts defrosting, the corresponding time is recorded, and when the time reaches the set time, the outlet air temperature of the indoor fresh air fan is automatically obtained, where the preset time and the adopted obtaining manner of the outlet air temperature of the indoor fresh air fan may be set correspondingly according to actual needs, and this is not limited in this embodiment. Furthermore, the user can input the monitoring instruction through the physical keys arranged on the indoor fresh air machine, and also can remotely input the monitoring instruction into the indoor fresh air machine through the terminal equipment in an internet mode.
Step S40: and adjusting at least one of the rotating speed of the indoor fan and the heating power of the heating device according to the outlet air temperature.
In a specific implementation, when the outlet air temperature changes, in this embodiment, at least one of the rotation speed of the indoor fan and the heating power of the heating device may be adjusted, and the selection and the combination of the specific modes may be set according to the circumstances, which is not limited in this embodiment.
In specific implementation, in this embodiment, the outlet air temperature is compared with a first preset temperature, the rotating speed of the fresh air machine or the heating power of the heating device is adjusted based on the comparison result, and the first preset temperature is the outlet air temperature when the second heat exchange system enters the defrosting mode, where the first preset temperature may be set correspondingly according to the actual needs of the user, and this is not limited in this embodiment.
Further, if the outlet air temperature is greater than or equal to the first preset temperature, it indicates that the outlet air temperature of the fresh air fan can meet the heating requirement of the user at this time, and in this case, the rotation speed of the fresh air fan is not adjusted in this embodiment. If the outlet air temperature is lower than the first preset temperature, the outlet air temperature of the new fan cannot meet the heating requirement of the user at this time in the specification, in this case, the rotation speed of the indoor fan may be reduced and/or the heating power of the heating device may be increased in this embodiment, and the specific reduction of the rotation speed and the specific increase of the heating power may be set according to the actual situation, which is not limited in this embodiment.
In the embodiment, the outlet air temperature of the fresh air fan is obtained; according to the air-out temperature is right the rotational speed of new fan is adjusted, through when the air-out temperature is lower, reduces the rotational speed of new fan, guarantees air conditioning system's heating effect, has promoted user experience.
Referring to fig. 4, fig. 4 is a flowchart illustrating a control method of an air conditioning system according to a third embodiment of the present invention.
A third embodiment of a control method of an air conditioning system of the present invention is proposed based on the first embodiment or the second embodiment described above.
Taking the first embodiment as an example, in this embodiment, after step S10, the method further includes:
step S101: and when the second heat exchange system is in heating operation, acquiring the air outlet temperature of the indoor new fan.
It is easy to understand that, in the process of the operation of the second heat exchange system, if it is detected that the second heat exchange system meets the defrosting exit condition, that is, the second heat exchange system does not need defrosting, the second heat exchange system is controlled to exit the defrosting mode at this moment, and the second heat exchange system is controlled to heat and operate.
In specific implementation, except that the heating device can be turned on when defrosting the second heat exchange system in this embodiment, the heating device can also be turned on or off based on the air-out temperature control of the indoor fresh air machine when the second heat exchange system performs normal heating operation, and specifically, the heating device can be implemented as follows.
In a specific implementation, the outlet air temperature is compared with a second preset temperature, and the heating device is controlled to be turned on and off based on the comparison result, where the second preset temperature represents the outlet air temperature corresponding to the fresh air fan during the heating operation, and the second preset temperature may be set correspondingly according to the actual requirement of the user, which is not limited in this embodiment, and is greater than the first preset temperature.
Step S102: and when the air outlet temperature is lower than a second preset temperature, starting the heating device to raise the air outlet temperature to the second preset temperature.
In specific implementation, if the outlet air temperature is greater than or equal to the second preset temperature, it is indicated that the outlet air temperature of the new air blower can meet the heating requirement of the user at this time, and in this case, the heating device may not be turned on in this embodiment. If the air-out temperature is less than the second and predetermines the temperature, then the specification this moment indoor new fan's air-out temperature can't satisfy user's demand that heats, under this condition, then open heating device in this embodiment, heat the new trend through heating device to the air-out temperature of the new fan after real-time supervision heating device opens, air-out temperature after until the heating reaches above-mentioned second and predetermines the temperature.
In concrete implementation, when first heat exchange system does not frost and operates, when second heat exchange system heats the operation simultaneously, can real-time supervision outdoor ambient temperature and the coil pipe temperature that first outdoor heat exchanger corresponds in this embodiment, then compare outdoor ambient temperature and first temperature earlier. If outdoor ambient temperature is greater than or equal to first temperature, then compare coil pipe temperature and second temperature again, if coil pipe temperature is less than or equal to the second temperature this moment, promote coil pipe temperature through the mode that reduces first compressor rotational speed in this embodiment until coil pipe temperature is greater than the second temperature to prevent new fan frosting.
Further, if the outdoor ambient temperature is lower than the first temperature, in this embodiment, the outdoor dew point temperature is obtained, then the difference between the outdoor dew point temperature and the coil temperature is calculated, and the calculated difference is compared with the third temperature. If this difference in temperature is less than the third temperature, make this difference in temperature be greater than the third temperature through the mode that reduces first compressor rotational speed equally in this embodiment, avoid the new fan to take place the condition of condensation and frosting. The first temperature is a certain value or range between-3 ℃ and 10 ℃, the second temperature is a certain value or range between-3 ℃ and 10 ℃, and the third temperature is a certain value or range between 0 ℃ and 10 ℃, and specific values can be selected accordingly according to actual requirements, which is not limited in this embodiment.
In a specific implementation, as illustrated in this embodiment, it is assumed that the third temperature is 0 ℃, the first temperature is 3 ℃, the second temperature is 3 ℃, the preset temperature of the fresh air fan during the heating operation is 35 ℃, and the preset temperature target corresponding to the fresh air fan during the defrosting period is 25 ℃. A user starts the machine to set a heating mode, high-temperature refrigerants are respectively conveyed to a fresh air fan and a heat pump host machine by an outdoor unit to be heated, when the air outlet temperature of the fresh air fan is more than or equal to 35 ℃, a heating device is closed, and when the air outlet temperature is less than 35 ℃, the heating device is opened; when the coil temperature To1 of the first outdoor heat exchanger is-3 ℃, the outdoor temperature To is 0 ℃ and the dew point temperature Td is-2 ℃, the conditions that the To1-Td is-1 and is less than a third temperature (0 ℃) are met, the rotating speed of the first compressor is reduced, the To1-Td is more than or equal To the third temperature (0 ℃) To ensure that the outdoor unit of the fresh air fan does not frost, and if the air outlet temperature is less than 35 ℃, the heating device is started To improve the air outlet temperature.
This embodiment is in first heat exchange system not operation of frosting, and when second heat exchange system heats the operation simultaneously, through the adjustment of heating device and compressor rotational speed, guarantee the operation of frosting of new fan outer machine, promoted the heating effect.
Furthermore, an embodiment of the present invention further provides a storage medium, where a control program of an air conditioning system is stored, and the control program of the air conditioning system, when executed by a processor, implements the steps of the control method of the air conditioning system as described above.
Since the storage medium adopts all technical solutions of all the embodiments, at least all the beneficial effects brought by the technical solutions of the embodiments are achieved, and no further description is given here.
Referring to fig. 5, fig. 5 is a block diagram illustrating a control apparatus of an air conditioning system according to a first embodiment of the present invention.
As shown in fig. 5, a control device of an air conditioning system according to an embodiment of the present invention includes:
the control module 10 is configured to control the first heat exchange system to run without frosting and the second heat exchange system to run for heating when the air conditioning system runs in a heating mode; and the second heat exchange system is used for controlling the second heat exchange system to enter a defrosting mode and controlling the heating device to heat and the indoor fan to rotate when meeting defrosting conditions.
It should be noted that the control method of the air conditioning system in this embodiment is applied to an air conditioning system, and the air conditioning system includes a first heat exchange system and a second heat exchange system, where the first heat exchange system may include a fresh air machine, and the second heat exchange system may include a heat pump host. The heat pump host machine is used for preparing cold water and hot water, conveying the cold water to an indoor ceiling or floor water pipe, and then exchanging heat with the indoor in a radiation heat exchange and natural convection heat exchange mode, and a fresh air machine in the heat supply system can enable indoor air to circulate, so that on one hand, dirty indoor air is discharged outdoors, on the other hand, outdoor fresh air is input indoors after measures such as sterilization, disinfection and filtration, and the air in the room is fresh and clean air at all times.
It is easy to understand that, the fresh air machine and the heat pump main machine are similar to the air conditioner and also have corresponding outdoor units, when heating is performed in winter, the outdoor units also have the condition of frosting, and in the prior art, when defrosting is performed, the fresh air machine and the heat pump main machine have the condition of defrosting at different times, for example, the heat pump main machine performs defrosting alone, or the fresh air machine performs defrosting alone. Among the prior art, when the heat pump host computer defrosted alone, although the new fan did not defrost, the defrosting of heat pump host computer can lead to the new fan can't normally preheat the new trend to indoor supply, and the supply of new trend this moment can be interrupted.
In order to solve the above problems, in this embodiment, the structure of the air conditioning system is improved, and as shown in fig. 3, the first heat exchange system is formed by connecting in series a first compressor 21, a first four-way valve 22, a first outdoor heat exchanger 23, a first throttling element 24, and a first indoor heat exchanger 12, and forms a refrigerant loop of the fresh air blower. The indoor fresh air machine 100 is an indoor part corresponding to the first heat exchange system, and is provided with an indoor fan 11. The second heat exchange system is formed by connecting a second compressor 26, a second four-way valve 27, a second outdoor heat exchanger 28, a second throttling part 29 and a second indoor heat exchanger 31 in series, and forms a refrigerant circuit of the heat pump main unit. The heat pump radiation end 300 is the corresponding indoor part of the second heat exchange system.
The first heat exchange system and the second heat exchange system in fig. 3 are integrated, and are disposed in the same outdoor unit 200 and have a common outdoor fan 25. Further, the number of the outdoor fans 25 may be one or multiple, and the outdoor fans may be set accordingly according to actual situations, which is not limited in this embodiment.
Further, a heating operation process of the air conditioning system is described by taking fig. 3 as an example. When heating operation is performed, the exhaust gas of the first compressor 21 of the first heat exchange system enters the first indoor heat exchanger 12 for condensation, is subjected to pressure reduction through the first throttling part 24, and then enters the first outdoor heat exchanger 23 for evaporation and heat absorption, so that a heating cycle is completed; the exhaust gas of the second compressor 26 of the second heat exchange system enters the second indoor heat exchanger 31 for condensation, passes through the second throttling part 29 for pressure reduction, and then enters the second outdoor heat exchanger 28 for evaporation and heat absorption, so that the heating cycle is completed. The first heat exchange system and the second heat exchange system can heat the indoor space, and the condensation temperatures of the first heat exchange system and the second heat exchange system can be the same or different.
Further, the air conditioning system in this embodiment can also realize refrigeration operation, and during the refrigeration operation, the first compressor 21 of the first heat exchange system exhausts air to enter the first outdoor heat exchanger 23 for condensation, and then enters the first indoor heat exchanger 12 for evaporation and heat absorption after passing through the first throttling component 24 for pressure reduction, thereby completing the refrigeration cycle; the second compressor 26 of the second heat exchange system exhausts air and enters a second outdoor heat exchanger 28 for condensation, and then enters a second indoor heat exchanger 31 for evaporation and heat absorption after passing through a second throttling part 29 for pressure reduction, thereby completing the refrigeration cycle. When the first heat exchange system dehumidifies and cools the indoor, the temperature is low (any value between 3 ℃ and 15 ℃), and the second heat exchange system cools the indoor only and is high (any value between 7 ℃ and 20 ℃).
It should be noted that, the air conditioning system in this embodiment is mainly based on the first heat exchange system, that is, the new fan heats, and the second heat exchange system is assisted, so when the whole air conditioning system operates in the heating mode, the first heat exchange system does not frost and operates, and the second heat exchange system heats and operates at the same time. When the defrosting is carried out alone to second heat transfer system, can influence whole air conditioning system's heating effect, to this kind of condition, can adjust heating device correspondingly in this embodiment, before this, need to change the frost to second heat transfer system and judge. Specifically, the temperature of the heat exchanger of the second heat exchange system may be compared with the frosting temperature, and if the temperature of the heat exchanger is less than the frosting temperature, it may be determined that frosting exists, for example, when the temperature of the second outdoor heat exchanger corresponding to the second heat exchange system is less than the frosting temperature, it is determined that the second heat exchange system needs to be frosted.
And the judging module 20 is configured to judge whether the second heat exchange system meets a defrosting condition.
In concrete implementation, after the judgement of changing frost, if second heat transfer system satisfies the condition of changing frost, also when second heat transfer system need change frost, can control second heat transfer system and get into the mode of changing frost in this embodiment, open heating device and indoor fan, indoor fan continues to rotate, and heating device can promote the new trend temperature, preheats the new trend when realizing that second heat transfer system changes frost. Specifically, when the second heat exchange system is operated for defrosting, the second heat exchange system is operated for cooling, that is, when the second heat exchange system is operated for cooling, the flow direction of the refrigerant in the second heat exchange system is opposite to the flow direction of the refrigerant in the second heat exchange system in the heating operation, so that the second indoor heat exchanger is cooled and the second outdoor heat exchanger is heated.
Further, after the second heat exchange system is controlled to enter the defrosting mode, if the outdoor fan is used for exchanging heat for the first outdoor heat exchanger and the second outdoor heat exchanger, the first heat exchange system can be closed to avoid taking away heat of the second outdoor heat exchanger, so that defrosting time is too long, a specific mode can be selected according to actual conditions, and the defrosting mode is not limited in this embodiment.
It is easy to understand that, when the second heat exchange system meets the defrosting exit condition, that is, after the second heat exchange system completes defrosting, the outdoor fan and the first compressor are started, and the second heat exchange system and the first heat exchange system are controlled to start heating operation. It should be emphasized that, after the outdoor fan and the first compressor are turned on, the heating device may be selected to be turned off temporarily or turned on continuously in this embodiment, and the selection may be performed according to the actual requirement of the user, which is not limited in this embodiment.
In this embodiment, when the air conditioning system operates in a heating mode, the first heat exchange system is controlled to operate without frosting, and the second heat exchange system operates in a heating mode; when the second heat exchange system meets the defrosting condition, the second heat exchange system is controlled to enter a defrosting mode, the heating device is controlled to heat and the indoor fan rotates, and when defrosting is carried out through the second heat exchange system, the indoor fan and the heating device are combined to preheat fresh air, so that the heating effect is improved.
It should be understood that the above is only an example, and the technical solution of the present invention is not limited in any way, and in a specific application, a person skilled in the art may set the technical solution as needed, and the present invention is not limited thereto.
It should be noted that the above-described work flows are only exemplary, and do not limit the scope of the present invention, and in practical applications, a person skilled in the art may select some or all of them to achieve the purpose of the solution of the embodiment according to actual needs, and the present invention is not limited herein.
In addition, the technical details that are not described in detail in this embodiment may refer to the control method of the air conditioning system provided in any embodiment of the present invention, and are not described herein again.
Further, it is to 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 or portions thereof that contribute to the prior art may be embodied in the form of a software product, where the computer software product is stored in a storage medium (e.g. Read Only Memory (ROM)/RAM, magnetic disk, optical disk), and includes several instructions for enabling a terminal device (e.g. a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. The control method of the air conditioning system is characterized in that the air conditioning system comprises a first heat exchange system, a second heat exchange system, an indoor fan and a heating device, the air conditioning system comprises an indoor fresh air fan, and the indoor fresh air fan comprises a first indoor heat exchanger, the indoor fan and the heating device; the control method comprises the following steps:
when the air conditioning system operates in a heating mode, controlling the first heat exchange system to operate without frosting and the second heat exchange system to operate in a heating mode; and
and when the second heat exchange system meets the defrosting condition, controlling the second heat exchange system to enter a defrosting mode, and controlling the heating device to heat and the indoor fan to rotate.
2. The control method according to claim 1, characterized by further comprising:
acquiring the air outlet temperature of the indoor fresh air fan; and
and adjusting at least one of the rotating speed of the indoor fan and the heating power of the heating device according to the outlet air temperature.
3. The method of controlling an air conditioning system according to claim 2, wherein said adjusting at least one of a rotational speed of the indoor fan and a heating power of the heating device according to the outlet air temperature includes:
and when the air outlet temperature is lower than a first preset temperature, reducing the rotating speed of the indoor fan and/or improving the heating power of the heating device.
4. The control method of an air conditioning system as set forth in any one of claims 1 to 3, characterized in that the control method further includes:
when the second heat exchange system is in heating operation, acquiring the air outlet temperature of the indoor new fan; and
and when the air outlet temperature is lower than a second preset temperature, starting the heating device to raise the air outlet temperature to the second preset temperature.
5. A control method of an air conditioning system as set forth in any of claims 1-3, wherein said air conditioning system further comprises an outdoor fan, said first heat exchange system comprises a first compressor, a first throttle part, a first outdoor heat exchanger and a first indoor heat exchanger, said second heat exchange system comprises a second compressor, a second throttle part, a second outdoor heat exchanger and a second indoor heat exchanger, said outdoor fan exchanges heat with said first outdoor heat exchanger and said second outdoor heat exchanger, said control method further comprises:
and when the second heat exchange system meets the defrosting condition, closing the first heat exchange system.
6. The method of controlling an air conditioning system according to claim 1, wherein the controlling the first heat exchange system to operate without frost comprises:
acquiring an outdoor environment temperature and a coil temperature of the first outdoor heat exchanger; and
when the outdoor environment temperature is greater than or equal to a first temperature and the coil temperature is less than or equal to a second temperature, the rotating speed of the first compressor is reduced, so that the coil temperature is greater than the second temperature.
7. The control method of an air conditioning system as set forth in claim 5, further comprising:
when the outdoor environment temperature is lower than a first temperature, acquiring an outdoor dew point temperature; and
when the temperature difference between the coil temperature and the outdoor dew point temperature is less than a third temperature, the rotational speed of the first compressor is reduced so that the temperature difference is greater than the third temperature.
8. The control device of the air conditioning system is characterized in that the air conditioning system comprises a first heat exchange system, a second heat exchange system, an indoor fan and a heating device, the air conditioning system comprises an indoor fresh air fan, and the indoor fresh air fan comprises a first indoor heat exchanger, the indoor fan and the heating device; the control device includes:
the control module is used for controlling the first heat exchange system to run without frosting and the second heat exchange system to run for heating when the air conditioning system runs in a heating mode; and
and the judging module is used for controlling the second heat exchange system to enter a defrosting mode and controlling the heating device to heat and the indoor fan to rotate when the second heat exchange system meets defrosting conditions.
9. A control apparatus of an air conditioning system, characterized by comprising: a memory, a processor, and a control program of an air conditioning system stored on the memory and executable on the processor, the control program of the air conditioning system being configured to implement the control method of the air conditioning system according to any one of claims 1 to 7.
10. A storage medium having stored thereon a control program of an air conditioning system, the control program of the air conditioning system realizing the control method of the air conditioning system according to any one of claims 1 to 7 when executed by a processor.
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| CN114811749A (en) * | 2022-04-01 | 2022-07-29 | 北京小米移动软件有限公司 | Air conditioner, control method and device thereof and storage medium |
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