CN107894061B - Fresh air conditioner, defrosting method and computer readable storage medium - Google Patents
Fresh air conditioner, defrosting method and computer readable storage medium Download PDFInfo
- Publication number
- CN107894061B CN107894061B CN201710995535.0A CN201710995535A CN107894061B CN 107894061 B CN107894061 B CN 107894061B CN 201710995535 A CN201710995535 A CN 201710995535A CN 107894061 B CN107894061 B CN 107894061B
- Authority
- CN
- China
- Prior art keywords
- defrosting
- fresh air
- air
- pipeline
- air conditioner
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a fresh air conditioner, a defrosting method and a computer readable storage medium, wherein the fresh air conditioner comprises: compressor, cross valve, off-premises station, the indoor set that the pipeline links to each other, wherein, the indoor set includes: a housing including an air inlet and an air outlet; the indoor heat exchanger and the indoor fan are arranged in the shell, wherein the indoor fan is arranged on one side close to the air inlet, and the indoor fan is used for blowing air to the indoor heat exchanger; and a fresh air pipeline with two ends respectively connected to the air inlet and the air outlet; and the microcontroller is electrically connected with the four-way valve and the indoor fan, and is used for controlling the four-way valve to be switched to a refrigeration mode when defrosting is determined to be needed in the heating mode, so that the rotating speed of the indoor fan is reduced, and a fresh air pipeline is switched on. According to the technical scheme, the refrigerant and outdoor air can be subjected to convection heat transfer through the fresh air pipeline, and heat exchange of the refrigerant is accelerated, so that the defrosting speed is accelerated, and the defrosting time is shortened.
Description
Technical Field
The invention relates to the field of air conditioners, in particular to a fresh air conditioner, a defrosting method and a computer readable storage medium.
Background
Along with the improvement of living standard of people, people have higher and higher requirements on living environment, the quality of indoor air is directly related to the health of people, and a large number of families begin to use fresh air devices. For household appliances in daily life, people pay more and more attention to the comfort of the use of the household appliances, the air conditioner is used as a household appliance for improving the indoor air quality, the popularization degree is higher and higher, the problem that an outdoor heat exchanger frosts inevitably when the air conditioner is used in winter, when the outdoor heat exchanger of the air conditioner used at present is frosted, the temperature of the indoor heat exchanger is very low, in order to prevent cold air from blowing into a room, an indoor fan is not started during defrosting, the system can not obtain heat input, the heat generated by the working of a compressor can only be used for defrosting of the outdoor heat exchanger, the defrosting time is long, and the customer experience is influenced.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art or the related art.
Therefore, the invention aims to provide a fresh air conditioner.
It is a further object of the present invention to provide a defrosting method.
It is yet another object of the present invention to provide a computer-readable storage medium.
The technical scheme of the first aspect of the invention provides a fresh air conditioner, which comprises: compressor, cross valve, off-premises station, the indoor set that the pipeline links to each other, wherein, the indoor set includes: a housing including an air inlet and an air outlet; the indoor heat exchanger and the indoor fan are arranged in the shell, wherein the indoor fan is arranged on one side close to the air inlet, and the indoor fan is used for blowing air to the indoor heat exchanger; and a fresh air pipeline with two ends respectively connected to the air inlet and the air outlet; and the microcontroller is electrically connected with the four-way valve and the indoor fan, and is used for controlling the four-way valve to be switched to a refrigeration mode when defrosting is determined to be needed in the heating mode, so that the rotating speed of the indoor fan is reduced, and a fresh air pipeline is switched on.
In the technical scheme, when the microcontroller determines that defrosting is needed, the four-way valve is controlled to be switched to a refrigeration mode, and at the moment, a refrigerant absorbs heat in the indoor unit and releases heat in the outdoor unit, so that defrosting is carried out; the microcontroller controls the rotation speed of the indoor fan to be reduced, and meanwhile, the fresh air pipeline is conducted, the indoor fan enables the suction pressure of the compressor to be stable, the working stability of the fresh air conditioner is improved during defrosting operation, air circulation in the fresh air pipeline is facilitated, outdoor air enters the fresh air pipeline from the air inlet, conducts convection heat transfer with a refrigerant in the pipeline, is exhausted from the air outlet after heat exchange is conducted, and at the moment, the refrigerant absorbs heat of the outdoor air in the fresh air pipeline, so that defrosting can be conducted quickly; the indoor fan enables outdoor air in the fresh air pipeline to always circulate, the stability of refrigerant heat exchange and the speed of the refrigerant heat exchange are increased, and the stability and the defrosting speed of the fresh air conditioner in the defrosting process are improved.
In the above technical solution, preferably, the housing includes: the air return port is electrically connected with the microcontroller and is provided with an air return grid; and the air outlet is electrically connected with the microcontroller, and an air outlet grid is arranged on the air outlet, wherein the air outlet grid or the air outlet grid and the air return grid are closed when the microcontroller determines that defrosting is required.
According to the technical scheme, when the microcontroller determines that defrosting is needed, the microcontroller controls the air outlet grille or the air outlet grille and the air return grille to be closed, and when the air outlet grille and the air return grille are closed, the possibility that cold air enters the room in the defrosting process can be prevented, and the influence of defrosting operation on the indoor temperature is reduced; when only closing the air-out grid, indoor air gets into the indoor set and carries out the heat transfer with the refrigerant from the return air inlet during the defrosting operation, and outdoor air gets into the fresh air pipeline through the air inlet and carries out the heat transfer with the refrigerant, and for the scheme of closing air-out grid and return air grid simultaneously this moment, the refrigerant absorbs the heat faster to can change the frost speed with higher speed, shorten the time of changing the frost.
In the above technical solution, preferably, the method further includes: and the temperature sensor is arranged on the outer wall of the outdoor unit and electrically connected with the microcontroller, and the temperature sensor is used for detecting the outdoor temperature.
In the technical scheme, the temperature sensor is used for detecting the outdoor temperature, so that reference is provided for defrosting operation, and the defrosting operation is conveniently and reasonably carried out according to the outdoor temperature.
In the above technical solution, preferably, the method further includes: the auxiliary heating device is arranged on one side of the indoor heat exchanger and electrically connected with the microcontroller, and the auxiliary heating device is used for heating a refrigerant in the indoor heat exchanger when the microcontroller determines that defrosting is needed; or the auxiliary heating device is also used for acquiring the outdoor temperature corresponding to the outdoor unit when the microcontroller determines that defrosting is needed, and heating the refrigerant in the indoor heat exchanger after the outdoor temperature is lower than the preset temperature.
In the technical scheme, when the auxiliary heating device is used for heating the refrigerant when defrosting is determined to be needed, the auxiliary heating device is convenient for the refrigerant to quickly absorb heat, so that defrosting operation is facilitated to be accelerated, defrosting time is shortened, and influence of defrosting operation on use of an air conditioner by a user is reduced; when the auxiliary heating device determines that defrosting is needed in the microcontroller, the refrigerant in the indoor heat exchanger is heated after the outdoor temperature is lower than the preset temperature, the auxiliary heating device is used for preventing the defrosting speed from being too low, when the outdoor temperature is not lower than the preset temperature, the refrigerant can exchange heat with outdoor air at a normal rate, and the defrosting speed of the fresh air conditioner is normal; when the outdoor temperature is lower than the preset temperature, the heat exchange efficiency of the refrigerant and the outdoor air is too low, the defrosting speed of the fresh air conditioner is too low, the auxiliary heating device works at the moment, the defrosting speed of the fresh air conditioner is normal by heating the refrigerant, and the energy consumption can be reduced under the condition that the defrosting speed of the fresh air conditioner is kept within the normal range.
In the above technical solution, preferably, the outdoor unit includes an outdoor fan electrically connected to the microcontroller, and when the microcontroller determines that defrosting is required, the outdoor fan is switched to the shutdown state.
In the technical scheme, when the microcontroller determines that defrosting is needed, the outdoor fan is switched to the shutdown state, the air flow around the outdoor unit is slowed down, the heat exchange speed between the outdoor unit and the outside air is reduced, the absorption of the outdoor air to heat in the outdoor unit during defrosting can be reduced, the loss of the heat in the outdoor unit is reduced, and the defrosting speed is convenient to improve.
In the above technical solution, preferably, the fresh air pipeline specifically includes: one end of the air inlet pipeline is connected to the air inlet, the other end of the air inlet pipeline is connected to the outdoor atmosphere, and a first valve is arranged on the air inlet pipeline; one end of the exhaust pipeline is connected to the exhaust port, the other end of the exhaust pipeline is connected to the outdoor atmosphere, and a second valve is arranged on the exhaust pipeline.
In the technical scheme, the first valve and the second valve determine the on-off of the fresh air pipeline, when the micro-controller determines to perform defrosting operation, the first valve and the second valve are both conducted, the fresh air pipeline is conducted, outdoor air enters the fresh air pipeline through the air inlet pipeline and is discharged from the air exhaust channel after being subjected to convection heat transfer with a refrigerant in the pipeline.
In the above technical solution, preferably, the microcontroller is further electrically connected to the first valve and the second valve, and the air intake pipeline and the air exhaust pipeline are communicated by controlling the opening of the first valve and the second valve.
In this technical scheme, microcontroller is connected with first valve and second valve electricity to can control the break-make of first valve and second valve, thereby when microcontroller confirms to need change the frost, control first valve and second valve and open and realize the air inlet pipeline of leading to and the pipeline of airing exhaust, thereby can be when changing the frost operation automatic fresh air pipeline of opening, be convenient for change the frost operation fast.
In the above technical solution, preferably, the method further includes: the microcontroller is also used for controlling the four-way valve to be switched to a heating mode after the defrosting is determined to be finished, adjusting the rotating speed of the indoor fan to the rotating speed before defrosting, and controlling the fresh air pipeline to be adjusted to be in an on-off state before defrosting.
In the technical scheme, after defrosting is finished, the microcontroller controls the four-way valve to be switched to a heating mode, adjusts the rotating speed of the indoor fan to the rotating speed before defrosting, controls the fresh air pipeline to be adjusted to the on-off state before defrosting, and restores the fresh air conditioner to the working state before defrosting operation to work normally.
The technical scheme of the second aspect of the invention provides a defrosting method, which comprises the following steps: acquiring operation parameters of a fresh air conditioner; when the operation parameters meet the preset defrosting conditions, the fresh air conditioner is controlled to be switched to a refrigerating mode, an outdoor fan of the fresh air conditioner is closed, the rotating speed of an indoor fan of the fresh air conditioner is reduced, a fresh air pipeline is switched on, and defrosting is completed until the operation parameters meet the preset exiting conditions.
In the technical scheme, firstly, the operation parameters of the fresh air conditioner are obtained, so that whether defrosting operation is carried out or not is determined according to the operation parameters, when the operation parameters meet preset defrosting conditions, the fresh air conditioner is controlled to be switched to a refrigeration mode, and at the moment, a refrigerant absorbs heat in an indoor unit and releases heat in an outdoor unit, so that defrosting is carried out; the outdoor fan of the fresh air conditioner is closed, at the moment, the air flow around the outdoor unit is slowed down, the heat exchange speed between the outdoor unit and the outside air is reduced, the absorption of the outdoor air to heat in the outdoor unit during defrosting can be reduced, the loss of the heat in the outdoor unit is reduced, and the defrosting speed is convenient to improve; the rotating speed of an indoor fan of the fresh air conditioner is reduced, and a fresh air pipeline is conducted, so that the indoor fan enables the suction pressure of a compressor to be stable, the working stability of the fresh air conditioner during defrosting operation is improved, air circulation in the fresh air pipeline is facilitated, outdoor air enters the fresh air pipeline from an air inlet, conducts convection heat transfer with a refrigerant in the pipeline, is discharged from an air outlet after heat exchange is conducted, and at the moment, the refrigerant absorbs heat of the outdoor air in the fresh air pipeline, so that defrosting can be conducted smoothly; the indoor fan enables air in the fresh air pipeline to flow all the time, and the stability of refrigerant heat exchange and the speed of the refrigerant heat exchange are increased, so that the stability of the fresh air conditioner in a defrosting process and the defrosting speed are improved, and defrosting is completed until the operation parameters meet the preset exit conditions.
In the above technical solution, preferably, the method further includes: when the operation parameters meet the preset defrosting conditions, determining the outdoor environment temperature of the fresh air conditioner; and if the outdoor environment temperature is lower than the preset temperature, starting an auxiliary heating device arranged on one side of the indoor heat exchanger of the fresh air conditioner, and closing the auxiliary heating device until the operation parameters meet the preset exit condition.
In the technical scheme, when the operation parameters meet the preset defrosting condition, the outdoor environment temperature of the fresh air conditioner is determined, then the outdoor environment temperature is compared with the preset temperature, if the outdoor environment temperature is lower than the preset temperature, the auxiliary heating device arranged on one side of the indoor heat exchanger of the fresh air conditioner is started, the heat exchange efficiency of the refrigerant and the outdoor air is too low, the defrosting speed of the fresh air conditioner is too low, the auxiliary heating device heats the refrigerant to enable the defrosting speed of the fresh air conditioner to be normal, and after the defrosting operation is completed until the operation parameters meet the preset exit condition, the auxiliary heating device is closed, and the defrosting speed of the auxiliary heating device is increased by heating the refrigerant when the defrosting speed is too low.
In the above technical solution, preferably, the method further includes: and when the operation parameters meet the preset defrosting conditions, closing the air outlet of the indoor unit or closing the air outlet and the air return inlet of the indoor unit.
In the technical scheme, when the operation parameters meet the preset defrosting conditions, namely defrosting operation is required, the air outlet of the indoor unit is closed or the air outlet and the air return inlet of the indoor unit are closed. When the air outlet and the air return inlet of the indoor unit are closed, the possibility that cold air enters the indoor unit in the defrosting process can be prevented, and the influence of defrosting operation on indoor temperature is reduced; when only the air outlet of the indoor unit is closed, indoor air enters the indoor unit from the air return inlet and exchanges heat with the refrigerant during defrosting operation, outdoor air enters the fresh air pipeline through the air inlet and exchanges heat with the refrigerant, and the refrigerant absorbs heat more quickly, so that the defrosting speed can be accelerated, and the defrosting time is shortened.
An aspect of the third aspect of the present invention provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the defrosting method of any one of the above aspects.
In this technical solution, when a computer program stored on a computer storage medium is executed, the defrosting method according to any one of the above technical solutions can be implemented, and heat exchange of a refrigerant can be accelerated through a fresh air duct, so that a defrosting speed is accelerated, a defrosting time is shortened, and an influence of a defrosting operation on an indoor temperature can be reduced.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 shows a front view of an indoor unit of a fresh air conditioner of embodiment 3 of the present invention;
fig. 2 shows a top view of an indoor unit of a fresh air conditioner according to embodiment 3 of the present invention;
fig. 3 shows an installation schematic diagram of an indoor unit of a fresh air conditioner in embodiment 7 of the present invention;
FIG. 4 shows a schematic flow diagram of a defrosting method according to embodiment 9 of the present invention;
fig. 5 shows a schematic flow diagram of a defrosting method according to embodiment 9 of the invention.
Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 5 is:
10 fresh air conditioner, 102 indoor unit, 1022 casing, 1024 air outlet, 1026 air outlet grid, 1028 air return port, 1030 air return grid, 1032 indoor fan, 1034 air inlet pipeline, 1036 first valve, 1038 air outlet pipeline and 1040 second valve.
Detailed Description
So that the manner in which the above recited objects, features and advantages of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments thereof which are illustrated in the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
Some embodiments according to the invention are described below with reference to fig. 1 to 5.
Example 1:
the embodiment provides a fresh air conditioner 10, including: compressor, four-way valve, off-premises station, indoor set 102 that the pipeline links to each other, wherein, indoor set 102 includes: a housing 1022, the housing 1022 including an air inlet and an air outlet; an indoor heat exchanger and an indoor fan 1032 disposed in the housing 1022, wherein the indoor fan 1032 is disposed at a side close to the air inlet, and the indoor fan 1032 is configured to blow air to the indoor heat exchanger; and a fresh air pipeline with two ends respectively connected to the air inlet and the air outlet; and the microcontroller is electrically connected with the four-way valve and the indoor fan 1032, and is used for controlling the four-way valve to be switched to a refrigeration mode when the defrosting is determined to be needed under the heating mode, reducing the rotating speed of the indoor fan 1032 and conducting a fresh air pipeline.
In this embodiment, when the microcontroller determines that defrosting is required, the four-way valve is controlled to switch to the refrigeration mode, and at this time, the refrigerant absorbs heat in the indoor unit 102 and releases heat in the outdoor unit, so that defrosting is performed; the microcontroller controls the rotation speed of the indoor fan 1032 to be reduced, and meanwhile, the fresh air pipeline is conducted, on one hand, the indoor fan 1032 enables the suction pressure of the compressor to be stable, the working stability of the fresh air conditioner 10 during defrosting operation is improved, on the other hand, the circulation of air in the fresh air pipeline is facilitated, outdoor air enters the fresh air pipeline from the air inlet, conducts convection heat transfer with a refrigerant in the pipeline, is discharged from the air outlet after heat exchange is conducted, and at the moment, the refrigerant absorbs heat of the outdoor air in the fresh air pipeline, so that defrosting can be conducted quickly; the indoor fan 1032 circulates air in the fresh air pipeline all the time, and the stability of refrigerant heat exchange is improved, so that the stability of the defrosting process of the fresh air conditioner 10 is improved.
Example 2:
on the basis of embodiment 1, the housing 1022 includes: the air return port 1028 is electrically connected with the microcontroller, and an air return grille is arranged on the air return port 1028; and the air outlet 1024 is electrically connected with the microcontroller, and an air outlet grid is arranged on the air outlet 1024, wherein when the microcontroller determines that defrosting is needed, the air outlet grid and the air return grid are closed.
In this embodiment, when microcontroller confirms that needs change the frost, microcontroller control closes the air-out grid or closes air-out grid and return air grid, when closing air-out grid and return air grid, can prevent to change the indoor possibility of frost in-process cold wind entering, reduces the influence of change frost operation to indoor temperature.
Example 3:
on the basis of embodiment 2, when microcontroller determines that the defrosting is required, close the air-out grille.
As shown in fig. 1 and 2, in this embodiment, when only the air outlet grille is closed, during defrosting operation, indoor air enters the indoor unit 102 from the air return opening and exchanges heat with the refrigerant, and outdoor air enters the fresh air pipeline through the air inlet and exchanges heat with the refrigerant, and at this time, compared with the case of closing the air outlet grille and the air return grille simultaneously, the refrigerant absorbs heat faster, so that defrosting speed can be increased, and defrosting time can be shortened.
Example 4:
on the basis of embodiment 2 or 3, the auxiliary heating device is arranged on one side of the indoor heat exchanger and electrically connected with the microcontroller, and the auxiliary heating device is used for heating the refrigerant in the indoor heat exchanger when the microcontroller determines that defrosting is needed.
In this embodiment, when the microcontroller determines that defrosting is required, the auxiliary heating device heats the refrigerant in the heat exchanger, so that the refrigerant can absorb heat quickly, defrosting operation is accelerated, and defrosting time is reduced, thereby reducing the influence of defrosting on the use of the air conditioner by a user.
Example 5:
on the basis of embodiment 2 or 3, the method further comprises the following steps: the temperature sensor is arranged on the outer wall of the outdoor unit and electrically connected with the microcontroller, and the temperature sensor is used for detecting the outdoor temperature; and the auxiliary heating device is arranged on one side of the indoor heat exchanger and electrically connected with the microcontroller, and is used for acquiring the outdoor temperature corresponding to the outdoor unit when the microcontroller determines that defrosting is needed, and heating the refrigerant in the indoor heat exchanger after the outdoor temperature is lower than the preset temperature.
In this embodiment, the temperature sensor is used for detecting the outdoor temperature, and when the outdoor temperature is not lower than the preset temperature, the refrigerant can exchange heat with the outdoor air at a normal rate, and the defrosting speed of the fresh air conditioner 10 is normal; when the outdoor temperature is lower than the preset temperature, the heat exchange efficiency of the refrigerant and the outdoor air is too low, the defrosting speed of the fresh air conditioner 10 is too low, the auxiliary heating device works at the moment, the defrosting speed of the fresh air conditioner 10 is normal by heating the refrigerant, and the energy consumption can be reduced under the condition that the defrosting speed of the fresh air conditioner 10 is kept within the normal range.
Example 6:
on the basis of the embodiment 4 or 5, the outdoor unit comprises an outdoor fan which is electrically connected with the microcontroller, and when the microcontroller determines that defrosting is needed, the outdoor fan is switched to a shutdown state.
In this embodiment, when the microcontroller determines that defrosting is required, the outdoor fan is switched to the shutdown state, at this time, air flow around the outdoor unit is slowed down, and the speed of heat exchange between the outdoor unit and the outside air is reduced, so that the absorption of heat in the outdoor unit by the outdoor air during defrosting can be reduced, the loss of heat in the outdoor unit is reduced, and the defrosting speed is increased conveniently.
Example 7:
on the basis of embodiment 6, the fresh air pipeline specifically includes: an air inlet pipeline 1034, wherein one end of the air inlet pipeline 1034 is connected to an air inlet, the other end of the air inlet pipeline 1034 is connected to the outdoor atmosphere, and a first valve 1036 is arranged on the air inlet pipeline 1034; an exhaust duct 1038, wherein one end of the exhaust duct 1038 is connected to the exhaust port, the other end of the exhaust duct 1038 is connected to the outdoor atmosphere, and a second valve 1040 is arranged on the exhaust duct 1038; the microcontroller is also electrically connected to the first and second valves 1036 and 1040 to communicate the intake and exhaust lines 1034 and 1038 by controlling the opening of the first and second valves 1036 and 1040.
As shown in fig. 3, in this embodiment, the microcontroller is electrically connected to the first valve 1036 and the second valve 1040, so as to control on/off of the first valve 1036 and the second valve 1040, and when the microcontroller determines that defrosting is required, the first valve 1036 and the second valve 1040 are controlled to be opened to conduct the air inlet pipeline 1034 and the air outlet pipeline 1038, so that the fresh air pipeline can be automatically opened during a defrosting operation, and the defrosting operation can be performed quickly.
Example 8:
on the basis of embodiment 7, the microcontroller is further configured to control the four-way valve to switch to the heating mode after determining that defrosting is completed, adjust the rotation speed of the indoor fan 1032 to the rotation speed before defrosting, and control the fresh air pipeline to be adjusted to the on-off state before defrosting.
In this embodiment, after defrosting is completed, the microcontroller controls the four-way valve to switch to the heating mode, adjusts the rotation speed of the indoor fan 1032 to the rotation speed before defrosting, controls the fresh air pipeline to be adjusted to the on-off state before defrosting, and at this time, the fresh air conditioner 10 returns to the working state before defrosting operation to perform normal operation.
Example 9:
fig. 4 shows a flow chart of the defrosting method of the embodiment.
As shown in fig. 4, a defrosting method includes:
step S402, acquiring the operation parameters of the fresh air conditioner 10;
step S404, when the operation parameter meets the preset defrosting condition, controlling the fresh air conditioner 10 to switch to the cooling mode, turning off the outdoor fan of the fresh air conditioner 10, reducing the rotation speed of the indoor fan 1032 of the fresh air conditioner 10, and turning on the fresh air pipeline until the operation parameter meets the preset exit condition, thereby completing defrosting.
In this embodiment, in step S402, the operation parameters of the fresh air conditioner 10 are obtained, so as to determine whether to perform defrosting operation according to the operation parameters, and in step S404, when the operation parameters satisfy a preset defrosting condition, the fresh air conditioner 10 is controlled to switch to a cooling mode, where in the preset defrosting condition, the temperature detected by the temperature sensor reaches-2 ℃ and is kept for 40 minutes, and at this time, the refrigerant absorbs heat in the indoor unit 102 and releases heat in the outdoor unit, so as to perform defrosting; the outdoor fan of the fresh air conditioner 10 is turned off, at this time, the air flow around the outdoor unit is slowed down, the heat exchange speed between the outdoor unit and the outside air is reduced, the absorption of the outdoor air to the heat in the outdoor unit during defrosting can be reduced, the loss of the heat in the outdoor unit is reduced, and the defrosting speed is improved conveniently; the rotating speed of an indoor fan 1032 of the fresh air conditioner 10 is reduced, and a fresh air pipeline is conducted, on one hand, the indoor fan 1032 enables the suction pressure of a compressor to be stable, the working stability of the fresh air conditioner 10 during defrosting operation is improved, on the other hand, the ventilation of air in the fresh air pipeline is facilitated, outdoor air enters the fresh air pipeline from an air inlet, conducts convection heat transfer with a refrigerant in the pipeline, is discharged from an air outlet after heat exchange is conducted, and at the moment, the refrigerant absorbs heat of outdoor air in the fresh air pipeline, so that defrosting can be conducted smoothly; the indoor fan 1032 circulates air in the fresh air pipeline all the time, and the stability of refrigerant heat exchange is improved, so that the stability of the defrosting process of the fresh air conditioner 10 is improved. And finishing defrosting until the operation parameters meet the preset exit conditions.
Example 10:
on the basis of the embodiment 9, when the operation parameters meet the preset defrosting conditions, the outdoor environment temperature of the fresh air conditioner 10 is determined; if the outdoor environment temperature is lower than the preset temperature, the auxiliary heating device arranged on one side of the indoor heat exchanger of the fresh air conditioner 10 is turned on until the operation parameters meet the preset exit condition, and then the auxiliary heating device is turned off.
In this embodiment, when the outdoor temperature is lower than the preset temperature, the efficiency of heat exchange between the refrigerant and the outdoor air is too low, the defrosting speed of the fresh air conditioner 10 is too low, the auxiliary heating device heats the refrigerant to enable the defrosting speed of the fresh air conditioner 10 to be normal, until the operation parameters meet the preset exit condition, that is, after the defrosting operation is completed, the auxiliary heating device is turned off, and the auxiliary heating device heats the refrigerant to increase the defrosting speed when the defrosting speed is too low.
Example 11:
on the basis of embodiment 10, the method further includes: and when the operation parameters meet the preset defrosting conditions, closing the air outlet and the air return inlet of the indoor unit 102.
In this embodiment, when the operation parameters satisfy the preset defrosting conditions, that is, when the defrosting operation is required, the air outlet of the indoor unit 102 is closed or the air outlet and the air return inlet of the indoor unit 102 are closed, so that the possibility that cold air enters the room in the defrosting process can be prevented, and the influence of the defrosting operation on the indoor temperature can be reduced.
Example 12:
on the basis of embodiment 11, the method further comprises the following steps: and when the operation parameters meet the preset defrosting conditions, closing the air outlet of the indoor unit 102.
In this embodiment, when the operation parameter satisfies the preset defrosting condition, that is, when the defrosting operation is required, when only the air outlet of the indoor unit 102 is closed, during the defrosting operation, the indoor air enters the indoor unit 102 from the air return inlet and exchanges heat with the refrigerant, the outdoor air enters the fresh air pipeline through the air inlet and exchanges heat with the refrigerant, and at this time, the refrigerant absorbs heat faster, so that the defrosting speed can be accelerated, and the defrosting time can be shortened.
Example 13:
fig. 5 shows a flow chart of the defrosting method of the embodiment.
As shown in fig. 5, a defrosting method includes:
step S502, acquiring the operation parameters of the fresh air conditioner 10;
step S504, judge whether the operation parameter meets the condition of defrosting;
if the judgment result is yes, executing step S506, controlling the fresh air conditioner 10 to switch to the refrigeration mode, closing an outdoor fan of the fresh air conditioner 10, reducing the rotation speed of an indoor fan 1032 of the fresh air conditioner 10, conducting a fresh air pipeline, closing an air outlet, and determining the outdoor temperature of the fresh air conditioner;
step S508, determining whether the outdoor temperature is lower than a preset temperature, if so, performing step S510 to turn on an auxiliary heating device disposed on one side of the heat exchanger in the fresh air conditioner 10;
step S512, judging whether the preset parameters meet preset exit conditions;
if yes, go to step S514 to quit defrosting.
In this embodiment, first, in step S502, the operation parameters of the fresh air conditioner 10 are obtained, so that whether the fresh air conditioner 10 needs defrosting can be determined according to the operation parameters; if the judgment result is yes, executing step S506, controlling the fresh air conditioner 10 to switch to the refrigeration mode, closing an outdoor fan of the fresh air conditioner 10, reducing the rotation speed of an indoor fan 1032 of the fresh air conditioner 10, conducting a fresh air pipeline, closing an air outlet, determining the outdoor temperature of the fresh air conditioner, and at the moment, absorbing heat in the indoor unit 102 by a refrigerant, releasing heat in the outdoor unit, and defrosting; the outdoor fan of the fresh air conditioner 10 is turned off, at this time, the air flow around the outdoor unit is slowed down, the heat exchange speed between the outdoor unit and the outside air is reduced, the absorption of the outdoor air to the heat in the outdoor unit during defrosting can be reduced, the loss of the heat in the outdoor unit is reduced, and the defrosting speed is improved conveniently; the rotating speed of an indoor fan 1032 of the fresh air conditioner 10 is reduced, and a fresh air pipeline is conducted, on one hand, the indoor fan 1032 enables the suction pressure of a compressor to be stable, the working stability of the fresh air conditioner 10 during defrosting operation is improved, on the other hand, the ventilation of air in the fresh air pipeline is facilitated, outdoor air enters the fresh air pipeline from an air inlet, conducts convection heat transfer with a refrigerant in the pipeline, is discharged from an air outlet after heat exchange is conducted, and at the moment, the refrigerant absorbs heat of outdoor air in the fresh air pipeline, so that defrosting can be conducted smoothly; the indoor fan 1032 circulates air in the fresh air pipeline all the time, and the stability of refrigerant heat exchange is improved, so that the stability of the defrosting process of the fresh air conditioner 10 is improved. The air outlet is closed, so that the possibility of cold air entering the room can be reduced, and the influence of defrosting on the indoor temperature is reduced; determining the outdoor temperature; step S508, determining whether the outdoor temperature is lower than a preset temperature, if so, performing step S510 to turn on an auxiliary heating device disposed on one side of the heat exchanger in the fresh air conditioner 10; when the outdoor temperature is lower than the preset temperature, the heat exchange efficiency of the refrigerant and the outdoor air is too low, the defrosting speed of the fresh air conditioner 10 is too low, the auxiliary heating device works at the moment, the defrosting speed of the fresh air conditioner 10 is normal by heating the refrigerant, and the energy consumption can be reduced under the condition that the defrosting speed of the fresh air conditioner 10 is kept within a normal range; step S512, judging whether the preset parameters meet preset exit conditions; if yes, go to step S514 to quit defrosting.
Example 14:
the present embodiment proposes a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the defrosting method of any one of the above embodiments.
In this embodiment, when the computer program stored in the computer storage medium is executed, the defrosting method described in any one of the above embodiments can be implemented, and the refrigerant and the outdoor air can perform convective heat transfer through the fresh air duct, so as to accelerate heat exchange of the refrigerant, thereby accelerating defrosting speed, shortening defrosting time, and reducing the influence of defrosting operation on the indoor temperature.
The technical scheme of the invention is described in detail in the above with reference to the attached drawings, and through the technical scheme of the invention, the refrigerant and the outdoor air can be subjected to convection heat transfer through the fresh air pipeline, so that the heat exchange of the refrigerant is accelerated, the defrosting speed is accelerated, and the defrosting time is shortened.
In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or unit must have a specific direction, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A fresh air conditioner is characterized by comprising: compressor, cross valve, off-premises station, indoor set and the supplementary heat facility that the pipeline links to each other, wherein, the indoor set includes:
a housing including an air inlet and an air outlet;
the indoor heat exchanger and the indoor fan are arranged in the shell, the indoor fan is arranged on one side close to the air inlet, and the indoor fan is used for blowing air to the indoor heat exchanger; and
the two ends of the fresh air pipeline are respectively connected to the air inlet and the air outlet;
the microcontroller is electrically connected with the four-way valve and the indoor fan, and is used for controlling the four-way valve to be switched to a refrigeration mode when defrosting is determined to be needed in the heating mode, reducing the rotating speed of the indoor fan and conducting the fresh air pipeline;
the housing includes:
the air return port is electrically connected with the microcontroller, and an air return grid is arranged on the air return port;
an air outlet electrically connected with the microcontroller, an air outlet grid arranged on the air outlet,
when the microcontroller determines that defrosting is needed, the air outlet grille or the air outlet grille and the air return grille are closed;
the auxiliary heating device is further used for acquiring the outdoor temperature corresponding to the outdoor unit when the microcontroller determines that defrosting is needed, and heating the refrigerant in the indoor heat exchanger after the outdoor temperature is lower than a preset temperature.
2. The fresh air conditioner as claimed in claim 1, further comprising:
and the temperature sensor is arranged on the outer wall of the outdoor unit and electrically connected with the microcontroller, and the temperature sensor is used for detecting the outdoor temperature.
3. The fresh air conditioner as claimed in claim 2,
the auxiliary heating device is arranged on one side of the indoor heat exchanger and electrically connected with the microcontroller, and the auxiliary heating device is used for heating a refrigerant in the indoor heat exchanger when the microcontroller determines that defrosting is needed.
4. The fresh air conditioner of claim 3 wherein the outdoor unit includes an outdoor fan electrically connected to the microcontroller, the outdoor fan being switched to an off state when the microcontroller determines that defrosting is required.
5. The fresh air conditioner according to any one of claims 1 to 4, wherein the fresh air pipeline specifically comprises:
one end of the air inlet pipeline is connected to the air inlet, the other end of the air inlet pipeline is connected to the outdoor atmosphere, and a first valve is arranged on the air inlet pipeline;
and one end of the exhaust pipeline is connected to the exhaust port, the other end of the exhaust pipeline is connected to the outdoor atmosphere, and a second valve is arranged on the exhaust pipeline.
6. The fresh air conditioner as claimed in claim 5, wherein the microcontroller is further electrically connected to the first valve and the second valve, and the air inlet pipeline and the air outlet pipeline are communicated by controlling the opening of the first valve and the second valve.
7. The fresh air conditioner as claimed in claim 5, further comprising:
and the microcontroller is also used for controlling the four-way valve to be switched to a heating mode after the defrosting is determined to be finished, adjusting the rotating speed of the indoor fan to the rotating speed before defrosting, and controlling the fresh air pipeline to be adjusted to be in an on-off state before defrosting.
8. A defrosting method is used for a fresh air conditioner, and the fresh air conditioner is characterized by comprising the following steps: compressor, cross valve, off-premises station, the indoor set that the pipeline links to each other, the indoor set casing includes: the air return port is provided with an air return grille; the air outlet is provided with an air outlet grid; the defrosting method comprises the following steps:
acquiring the operation parameters of the fresh air conditioner;
when the operation parameters meet preset defrosting conditions, controlling the fresh air conditioner to switch to a refrigeration mode, closing an outdoor fan of the fresh air conditioner, reducing the rotating speed of an indoor fan of the fresh air conditioner, and conducting a fresh air pipeline of the fresh air conditioner until the operation parameters meet preset exit conditions, and then completing defrosting;
when the defrosting is determined to be needed, the air outlet grille or the air outlet grille and the air return grille are closed;
when the operation parameters meet preset defrosting conditions, determining the outdoor environment temperature of the fresh air conditioner;
and if the outdoor environment temperature is lower than the preset temperature, starting an auxiliary heating device arranged on one side of an indoor heat exchanger of the fresh air conditioner, and closing the auxiliary heating device until the operating parameters meet preset exit conditions.
9. The defrosting method according to claim 8, further comprising:
and when the operation parameters meet the preset defrosting condition, closing an air outlet of an indoor unit of the fresh air conditioner or closing the air outlet and an air return inlet of the indoor unit.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the defrosting method according to claim 8 or 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710995535.0A CN107894061B (en) | 2017-10-23 | 2017-10-23 | Fresh air conditioner, defrosting method and computer readable storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710995535.0A CN107894061B (en) | 2017-10-23 | 2017-10-23 | Fresh air conditioner, defrosting method and computer readable storage medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107894061A CN107894061A (en) | 2018-04-10 |
| CN107894061B true CN107894061B (en) | 2020-04-17 |
Family
ID=61803769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710995535.0A Active CN107894061B (en) | 2017-10-23 | 2017-10-23 | Fresh air conditioner, defrosting method and computer readable storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107894061B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111140997B (en) * | 2019-12-31 | 2021-08-24 | Tcl空调器(中山)有限公司 | Air conditioner control method and device, air conditioner and computer readable storage medium |
| CN111678206A (en) * | 2020-06-17 | 2020-09-18 | 珠海格力电器股份有限公司 | Air conditioning unit and control method thereof |
| CN114688630A (en) * | 2020-12-30 | 2022-07-01 | 广东美的制冷设备有限公司 | Air conditioner, control method and device thereof and readable storage medium |
| CN114543164B (en) * | 2022-02-15 | 2023-10-13 | 北京小米移动软件有限公司 | Air conditioner indoor unit, air conditioner control method and air conditioner control device |
| 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 |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09250820A (en) * | 1996-03-19 | 1997-09-22 | Fujitsu General Ltd | Air conditioner |
| JP2004053094A (en) * | 2002-07-18 | 2004-02-19 | Toshiba Kyaria Kk | Air conditioner |
| CN2851920Y (en) * | 2005-01-20 | 2006-12-27 | 广东美的电器股份有限公司 | Air conditioner indoor unit capable of quickly defrosting |
| CN1884941A (en) * | 2006-07-10 | 2006-12-27 | 陈志强 | Heat pump heating system capable of improving heating effect in winter and special heating apparatus therefor |
| CN1892131A (en) * | 2005-07-07 | 2007-01-10 | 乐金电子(天津)电器有限公司 | Air-conditioner and its defrosting control method |
| CN101975422A (en) * | 2010-09-30 | 2011-02-16 | 广东美的电器股份有限公司 | Warm/cool air-conditioner and defrosting method thereof |
| CN103742987A (en) * | 2014-01-22 | 2014-04-23 | 苏州翔箭智能科技有限公司 | Defrosting method of fresh-air machine system |
| CN106969486A (en) * | 2017-03-28 | 2017-07-21 | 广州松下空调器有限公司 | A kind of air conditioner and its control method for not shutting down defrosting |
| CN107559956A (en) * | 2017-08-21 | 2018-01-09 | 广东美的暖通设备有限公司 | VMC and its control method |
-
2017
- 2017-10-23 CN CN201710995535.0A patent/CN107894061B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09250820A (en) * | 1996-03-19 | 1997-09-22 | Fujitsu General Ltd | Air conditioner |
| JP2004053094A (en) * | 2002-07-18 | 2004-02-19 | Toshiba Kyaria Kk | Air conditioner |
| CN2851920Y (en) * | 2005-01-20 | 2006-12-27 | 广东美的电器股份有限公司 | Air conditioner indoor unit capable of quickly defrosting |
| CN1892131A (en) * | 2005-07-07 | 2007-01-10 | 乐金电子(天津)电器有限公司 | Air-conditioner and its defrosting control method |
| CN1884941A (en) * | 2006-07-10 | 2006-12-27 | 陈志强 | Heat pump heating system capable of improving heating effect in winter and special heating apparatus therefor |
| CN101975422A (en) * | 2010-09-30 | 2011-02-16 | 广东美的电器股份有限公司 | Warm/cool air-conditioner and defrosting method thereof |
| CN103742987A (en) * | 2014-01-22 | 2014-04-23 | 苏州翔箭智能科技有限公司 | Defrosting method of fresh-air machine system |
| CN106969486A (en) * | 2017-03-28 | 2017-07-21 | 广州松下空调器有限公司 | A kind of air conditioner and its control method for not shutting down defrosting |
| CN107559956A (en) * | 2017-08-21 | 2018-01-09 | 广东美的暖通设备有限公司 | VMC and its control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107894061A (en) | 2018-04-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107894061B (en) | Fresh air conditioner, defrosting method and computer readable storage medium | |
| KR102600975B1 (en) | Air conditioner and control method thereof | |
| CN107606725B (en) | Heat storage defrosting control method and device and air conditioner | |
| US8539788B2 (en) | Ventilating and air conditioning apparatus | |
| CN109489189A (en) | A kind of cleaning method of air conditioner | |
| CN106052028A (en) | Temperature and humidity control method and device | |
| CN105987483A (en) | Novel air conditioner defrosting control system | |
| CN108168018A (en) | Air conditioner heat-production control method | |
| CN111089335A (en) | Air conditioner, method and device thereof and storage medium | |
| WO2020053929A1 (en) | Air conditioning device | |
| JP2015206570A (en) | Ventilation device and ventilation air conditioning system | |
| CN109140719A (en) | A method of control air conditioning exhausting temperature | |
| CN107504629B (en) | Multi-connected air conditioner clothes dryer and control method thereof | |
| JP5225442B2 (en) | Air conditioner | |
| JP2017089950A (en) | Air Conditioning System | |
| CN209819742U (en) | Variable-frequency multi-connected radiation heating and refrigerating air conditioning system | |
| CN111649394A (en) | Air conditioner and defrosting control method thereof | |
| CN110296507A (en) | Heat exchange control method of air conditioner outdoor unit | |
| CN110736142B (en) | Air conditioner and rapid dehumidification control method without cooling | |
| JP4938536B2 (en) | Air conditioner | |
| CN114061036A (en) | Fresh air fan anti-freezing control method, fresh air fan and computer readable storage medium | |
| JP7199051B2 (en) | indoor air conditioning system | |
| JP6745895B2 (en) | Air conditioning system | |
| JP3443392B2 (en) | Air conditioner | |
| CN106949547B (en) | Dehumidification apparatus and control method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |