CN117663423A - Four-way valve starting control method and device and air conditioning unit - Google Patents
Four-way valve starting control method and device and air conditioning unit Download PDFInfo
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- CN117663423A CN117663423A CN202311508913.XA CN202311508913A CN117663423A CN 117663423 A CN117663423 A CN 117663423A CN 202311508913 A CN202311508913 A CN 202311508913A CN 117663423 A CN117663423 A CN 117663423A
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000004378 air conditioning Methods 0.000 title claims abstract description 12
- 238000004891 communication Methods 0.000 claims description 13
- 238000011217 control strategy Methods 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 10
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- 238000004590 computer program Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 230000004044 response Effects 0.000 claims description 3
- 238000010257 thawing Methods 0.000 claims description 3
- 230000004913 activation Effects 0.000 claims 1
- 239000000758 substrate Substances 0.000 claims 1
- 230000006378 damage Effects 0.000 description 7
- 238000011897 real-time detection Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
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- 238000005265 energy consumption Methods 0.000 description 1
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- 239000007788 liquid Substances 0.000 description 1
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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
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- 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
Abstract
The invention provides a four-way valve starting control method, a device and an air conditioning unit.
Description
Technical Field
The invention relates to the technical field of intelligent control, in particular to a four-way valve starting control method and device and an air conditioning unit.
Background
At present, the four-way valve of the existing air conditioner is a necessary component of the cold and warm air conditioner. The main function is to realize the change of the refrigerant flow direction when the switching of the refrigerating and heating modes is performed. It can be said that without the operation of the four-way valve, the air conditioner cannot perform heating. The four-way valve mainly comprises an electromagnetic valve and a valve body. The valve body is divided into a pilot valve and a main valve, which are connected together by a capillary tube and cannot be disassembled. A slide block made of rubber is arranged in the main valve and is mainly used for switching pipelines.
When the four-way valve is started, the sliding block is pushed to be connected through a certain high-low pressure difference. When the pressure difference between the high pressure and the low pressure is too large, the piston impact can be too large, and if the maximum action pressure difference is exceeded, the service life of the four-way valve can be influenced for a long time. Meanwhile, noise is easy to generate, and pipeline vibration can be caused, so that the reliability and user experience of the unit are affected. When the high-low pressure difference is too small, the necessary flow required by reversing is not ensured, and the four-way valve can not be reversed in place. Under the low temperature condition, the bottom temperature of the compressor cannot be quickly established, and the compressor is in a liquid impact state for a short time, so that the piston part of the four-way valve is easily damaged and cannot act. Under the high load state, the two sides of the four-way valve are easy to generate larger pressure difference, in particular to a fixed-frequency air conditioner, at the moment, the frequency of the compressor is fixed at the highest frequency, and if a control method is reasonably designed, the reliability can be influenced. Therefore, it is necessary to finely design the control of the four-way valve.
Disclosure of Invention
The invention aims to overcome the technical defects, and provides a four-way valve starting control method and device and an air conditioner unit, so as to solve the problem that the four-way valve is easily damaged when the four-way valve is reversed under unsuitable temperature conditions in the related art.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
according to a first aspect of the present invention, there is provided a four-way valve start control method, including:
responding to a heating instruction of a user;
if the four-way valve is in a non-energized state, entering a four-way valve starting control mode;
detecting the coil temperature and the environment temperature of the air conditioner in real time in a four-way valve starting control mode;
and controlling the starting of the four-way valve according to the temperature of the coil pipe and the ambient temperature.
Preferably, the controlling the start of the four-way valve according to the coil temperature and the ambient temperature includes:
judging whether the coil temperature and the environment temperature meet a first preset condition, if so, adjusting the running state of the air conditioner until the coil temperature and the environment temperature do not meet the first preset condition, and then controlling the four-way valve to start according to a preset control strategy;
judging whether the temperature of the coil pipe meets a second preset condition, if so, adjusting the running state of the air conditioner until the temperature of the coil pipe does not meet the second preset condition, judging before reversing the four-way valve, and controlling the four-way valve to reverse when the starting condition of the four-way valve is met.
Preferably, the method further comprises:
and if the coil temperature and the environment temperature meet the first preset condition and the second preset condition at the same time, adjusting the running state of the air conditioner until the coil temperature and the environment temperature do not meet the first preset condition, and then controlling the four-way valve to start according to a preset control strategy.
Preferably, the coil temperature comprises: coil temperature T of outdoor unit A Coil temperature T of indoor unit B ；
The ambient temperature includes: outdoor ambient temperature T Outer part ；
The first preset condition includes: coil temperature T of outdoor unit A < a first threshold T1, and T Outer part -T A ＞△T1。
The second preset condition includes: indoor set coil pipe temperature T B > second threshold T2.
Preferably, the adjusting the operation state of the air conditioner until the coil temperature and the ambient temperature do not meet the first preset condition includes:
starting the compressor to make the four-way valve in a non-energized state, and improving the temperature T of the outdoor coil by utilizing the heat exchange effect of the outdoor heat exchanger A Defrosting is carried out until the coil temperature and the environment temperature do not meet a first preset condition.
Preferably, the four-way valve is controlled to be started according to a preset control strategy, specifically:
judging whether the starting accumulated time length of the compressor is smaller than or equal to a first preset time length, if so, controlling the compressor to run at low frequency, and then controlling the four-way valve to change direction, otherwise, controlling the compressor to stop running, and judging before the four-way valve changes direction.
Preferably, the adjusting the operation state of the air conditioner until the coil temperature does not meet the second preset condition specifically includes:
starting an indoor fan until the temperature T of the coil pipe of the indoor unit B The second preset condition is not satisfied.
Preferably, the judging before reversing the four-way valve includes:
dividing the outdoor environment temperature into different temperature intervals, and establishing a corresponding relation table of reference pressure difference and compressor current value required by the safety reversing of the four-way valve in each temperature interval;
judging a temperature interval to which the current outdoor environment temperature belongs;
inquiring a reference pressure difference or a compressor current value required by the safety reversing of the four-way valve in the corresponding relation table under the temperature interval;
and if the reference pressure difference at two sides of the current four-way valve is equal to the queried reference pressure difference, or the current value of the current compressor is equal to the queried current value, controlling the four-way valve to change direction.
According to a second aspect of the present invention, there is provided a four-way valve start control apparatus comprising:
the response module is used for responding to the heating instruction of the user;
the control module is used for entering a four-way valve starting control mode if the four-way valve is in a non-electrified state;
the detection module is used for detecting the coil temperature and the environment temperature of the air conditioner in real time in a four-way valve starting control mode;
the control module is also used for controlling the starting of the four-way valve according to the temperature of the coil pipe and the ambient temperature.
According to a third aspect of the present invention, there is provided an air conditioning unit comprising:
the device comprises a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory are communicated with each other through the communication bus;
a memory for storing a computer program;
and the processor is used for realizing the method when executing the program stored in the memory.
The technical scheme provided by the embodiment of the invention can comprise the following beneficial effects:
when the four-way valve is in a non-electrified state, the four-way valve enters a four-way valve starting control mode, the coil temperature and the environment temperature of the air conditioner are detected in real time, the four-way valve is controlled to start according to the coil temperature and the environment temperature, the four-way valve can be effectively prevented from failing to start by increasing the temperature judgment condition when the four-way valve is started, meanwhile, the four-way valve can be ensured to be normally started under a relatively severe condition, the starting time of the four-way valve is controlled in a refined mode, the damage to the four-way valve is reduced, and the service life of the four-way valve is prolonged.
Drawings
FIG. 1 is a flow chart illustrating a four-way valve actuation control method according to an exemplary embodiment;
FIG. 2 is a flow chart illustrating a four-way valve actuation control method according to another exemplary embodiment;
fig. 3 is a schematic block diagram of a four-way valve actuation control device, according to an example embodiment.
Detailed Description
In order to make the present application solution better understood by those skilled in the art, the following description will be made in detail and with reference to the accompanying drawings in the embodiments of the present application, it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.
Example 1
Fig. 1 is a flowchart illustrating a four-way valve start-up control method according to an exemplary embodiment, as shown in fig. 1, the method including:
step S11, responding to a heating instruction of a user;
step S12, if the four-way valve is in a non-energized state, entering a four-way valve starting control mode;
step S13, detecting the coil temperature and the environment temperature of the air conditioner in real time in a four-way valve starting control mode;
and step S14, controlling the starting of the four-way valve according to the coil temperature and the ambient temperature.
It should be noted that, in the technical solution provided in this embodiment, the load is executed in a controller of an air conditioning unit in specific practice, or the load is executed in an electronic device connected to the controller.
It can be appreciated that, the technical scheme that this embodiment provided, when the cross valve is in the unenergized state, get into cross valve start control mode, real-time detection air conditioner's coil pipe temperature and ambient temperature, according to coil pipe temperature and ambient temperature, control the start-up of cross valve, through increasing temperature judgement condition when starting the cross valve, can effectively avoid the start-up failure of cross valve, guarantee simultaneously that the cross valve also can normally start under more abominable condition, the control of elaborating its start-up moment has reduced the harm to the cross valve, has improved cross valve life.
In specific practice, in step S14, according to the coil temperature and the ambient temperature, the four-way valve is controlled to be started, which includes:
judging whether the coil temperature and the environment temperature meet a first preset condition, if so, adjusting the running state of the air conditioner until the coil temperature and the environment temperature do not meet the first preset condition, and then controlling the four-way valve to start according to a preset control strategy;
judging whether the temperature of the coil pipe meets a second preset condition, if so, adjusting the running state of the air conditioner until the temperature of the coil pipe does not meet the second preset condition, judging before reversing the four-way valve, and controlling the four-way valve to reverse when the starting condition of the four-way valve is met.
The method further comprises the steps of:
and if the coil temperature and the environment temperature meet the first preset condition and the second preset condition at the same time, adjusting the running state of the air conditioner until the coil temperature and the environment temperature do not meet the first preset condition, and then controlling the four-way valve to start according to a preset control strategy.
In specific practice, the coil temperature includes: coil temperature T of outdoor unit A Coil temperature T of indoor unit B ；
The ambient temperature includes: outdoor ambient temperature T Outer part ；
The first preset condition includes: coil temperature T of outdoor unit A < a first threshold T1, and T Outer part -T A ＞△T1。
The second preset condition includes: indoor set coil pipe temperature T B > second threshold T2.
It can be appreciated that if the outdoor unit coil temperature T A < a first threshold T1, and T Outer part -T A The first thresholds T1 and DeltaT 1 are set according to the needs of a user or according to historical experience values, for example, T1 is set to 0 ℃ and DeltaT 1 takes 5 ℃), which indicates that the heat exchanger of the outdoor unit may be in a frosting state (if the outdoor environment temperature is lower than the coil temperature, frosting is not necessarily caused by severe frosting, because the lower the outdoor environment temperature is, the lower the dew point temperature is, the lower the coil temperature is, the frosting is caused, the thicker frost is formed on the outdoor unit, the lower the coil temperature is, and the thicker frost is formed than the environment temperature, so that the thicker frost is formed. When the valve is started in this state at a low temperature for a long period of time, the piston part of the four-way valve is easily damaged and cannot operate. In order to avoid the damage of the four-way valve caused by the start of the four-way valve under the condition of unsuitable temperature conditions, when the first preset condition is required to be met, the running state of the air conditioner is adjusted until the temperature of the coil pipe and the ambient temperature do not meet the first preset condition, and then the start of the four-way valve is controlled according to a preset control strategy.
Specifically, the adjusting the operation state of the air conditioner until the coil temperature and the ambient temperature do not meet the first preset condition includes:
starting the compressor to make the four-way valve in a non-energized state, and improving the temperature T of the outdoor coil by utilizing the heat exchange effect of the outdoor heat exchanger A Defrosting is carried out until the coil temperature and the environment temperature do not meet a first preset condition.
It can be understood that before the four-way valve is controlled to be started, the air conditioning unit can achieve the optimal heating effect, and the user experience is improved.
Further, the four-way valve is controlled to be started according to a preset control strategy, specifically:
judging whether the starting accumulated time length of the compressor is smaller than or equal to a first preset time length (the first preset time length is set according to the needs of a user or is set according to a historical experience value, for example, 100 s), if yes, controlling the compressor to run at a low frequency (20 Hz is preferable at the low frequency), controlling the four-way valve to reverse, otherwise, controlling the compressor to stop running, and judging the four-way valve before reversing.
It can be understood that if the cumulative time period of the start of the compressor is longer than the first preset time period, the start time of the compressor is too long, and the indoor unit coil temperature T is due to the fact that the indoor unit fan is not started B The pressure difference at two sides of the four-way valve is overlarge, the piston impact is overlarge, and if the maximum action pressure difference is exceeded, the service life of the four-way valve can be influenced for a long time. If the starting accumulated time length of the compressor is smaller than or equal to the first preset time length, which means that the starting time of the compressor is shorter, the pressure on two sides of the four-way valve is moderate, the low-frequency operation of the compressor is controlled, and meanwhile the reversing of the four-way valve is controlled. Compared with the shutdown, the operation of stopping restarting the compressor is effectively avoided by keeping the low-frequency operation, and the electric energy consumption is saved.
Specifically, the adjusting the operation state of the air conditioner until the coil temperature does not meet the second preset condition specifically includes:
starting the indoor fan until the indoor unit discTube temperature T B The second preset condition is not satisfied.
It can be appreciated that if the indoor unit coil temperature T B And the second threshold value T2 is more than the first threshold value, which indicates that the indoor unit is in a high-temperature state and in a state with higher pressure. If the four-way valve is started at this time, the pressure on two sides of the four-way valve is possibly too high, the piston is possibly impacted too much, noise is generated, and therefore the indoor fan is required to be started for cooling.
In specific practice, the judging before reversing the four-way valve comprises the following steps:
dividing the outdoor environment temperature into different temperature intervals, and establishing a corresponding relation table of reference pressure difference and compressor current value required by the safety reversing of the four-way valve in each temperature interval;
judging a temperature interval to which the current outdoor environment temperature belongs;
inquiring a reference pressure difference or a compressor current value required by the safety reversing of the four-way valve in the corresponding relation table under the temperature interval;
and if the reference pressure difference at two sides of the current four-way valve is equal to the queried reference pressure difference, or the current value of the current compressor is equal to the queried current value, controlling the four-way valve to change direction.
It should be noted that, establishing a corresponding relationship table between the reference pressure difference and the compressor current value required for the safety reversing of the four-way valve in each temperature interval may be as shown in the following table one:
| temperature interval | Reference differential pressure | Compressor current value | Outdoor ambient temperature T Outer part |
| Ultra low temperature zone | 0.4mpa | 2A | T Outer part ≤0℃ |
| Low temperature zone | 0.6mpa | 2.9A | 0℃＜T Outer part ≤7℃ |
| Medium temperature zone | 0.8mpa | 3.5A | 7℃＜T Outer part ≤14℃ |
| High temperature zone | 1.1mpa | 4.7A | 14℃＜T Outer part ≤20℃ |
| Ultra-high temperature zone | 1.3mpa | 5.8A | T Outer part ＞20℃ |
List one
It can be understood that the temperature interval is used for dividing the reference pressure difference of the four-way valve, so that the problem that the pressure difference of the four-way valve is overlarge at high temperature and the pressure difference of the four-way valve is overlarge at low temperature can be avoided by the fine division. For the air conditioning unit provided with the high-low pressure sensor, the reference pressure difference at two sides of the four-way valve can be judged in real time, and when the reference pressure difference is met, the four-way valve reversing is realized. For the air conditioning unit without the high-low pressure sensor, the magnitude of the pressure difference at two sides of the four-way valve can be judged through detecting the current value of the compressor, and the reversing action of the four-way valve can be responded quickly.
Therefore, according to the four-way valve starting control method provided by the embodiment, through monitoring the current of the compressor, the differential pressure at two sides of the four-way valve is reasonably controlled, damage to the four-way valve is reduced, the operation is easy, the application scene is wide, normal starting of the four-way valve under severe environmental conditions can be ensured, and the service life of the four-way valve is effectively prolonged.
Example two
Fig. 2 is a flowchart illustrating a four-way valve start-up control method according to another exemplary embodiment, as shown in fig. 2, the method including:
step S21, responding to a heating instruction of a user;
step S22, if the four-way valve is in a non-energized state, entering a four-way valve starting control mode;
step S23, detecting the coil temperature and the environment temperature of the air conditioner in real time in a four-way valve starting control mode;
step S24, judging whether the coil temperature and the environment temperature meet a first preset condition, if so, adjusting the running state of the air conditioner until the coil temperature and the environment temperature do not meet the first preset condition, and then controlling the four-way valve to start according to a preset control strategy;
step S25, judging whether the temperature of the coil pipe meets a second preset condition, if so, adjusting the running state of the air conditioner until the temperature of the coil pipe does not meet the second preset condition, judging before reversing the four-way valve, and controlling the four-way valve to reverse when the starting condition of the four-way valve is met;
and S26, if the coil temperature and the environment temperature meet the first preset condition and the second preset condition at the same time, adjusting the running state of the air conditioner until the coil temperature and the environment temperature do not meet the first preset condition, and then controlling the four-way valve to start according to a preset control strategy.
It can be appreciated that, the technical scheme that this embodiment provided, when the cross valve is in the unenergized state, get into cross valve start control mode, real-time detection air conditioner's coil pipe temperature and ambient temperature, according to coil pipe temperature and ambient temperature, control the start-up of cross valve, through increasing temperature judgement condition when starting the cross valve, can effectively avoid the start-up failure of cross valve, guarantee simultaneously that the cross valve also can normally start under more abominable condition, the control of elaborating its start-up moment has reduced the harm to the cross valve, has improved cross valve life.
Example III
Fig. 3 is a schematic block diagram of a four-way valve actuation control device 100, according to an exemplary embodiment, as shown in fig. 3, the device 100 includes:
a response module 101, configured to respond to a heating instruction of a user;
the control module 102 is configured to enter a four-way valve start control mode if the four-way valve is in a non-energized state;
the detection module 103 is used for detecting the coil temperature and the environment temperature of the air conditioner in real time in a four-way valve starting control mode;
the control module 102 is further configured to control the start of the four-way valve according to the coil temperature and the ambient temperature.
It should be noted that, in the technical solution provided in this embodiment, the load is executed in a controller of an air conditioning unit in specific practice, or the load is executed in an electronic device connected to the controller.
The implementation manner and the beneficial effects of each module can be referred to the description of the above embodiment, and this embodiment is not repeated.
It can be appreciated that, the technical scheme that this embodiment provided, when the cross valve is in the unenergized state, get into cross valve start control mode, real-time detection air conditioner's coil pipe temperature and ambient temperature, according to coil pipe temperature and ambient temperature, control the start-up of cross valve, through increasing temperature judgement condition when starting the cross valve, can effectively avoid the start-up failure of cross valve, guarantee simultaneously that the cross valve also can normally start under more abominable condition, the control of elaborating its start-up moment has reduced the harm to the cross valve, has improved cross valve life.
Example IV
An air conditioning unit according to an exemplary embodiment includes:
the device comprises a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory are communicated with each other through the communication bus;
a memory for storing a computer program;
and the processor is used for realizing the method when executing the program stored in the memory.
It can be appreciated that, the technical scheme that this embodiment provided, when the cross valve is in the unenergized state, get into cross valve start control mode, real-time detection air conditioner's coil pipe temperature and ambient temperature, according to coil pipe temperature and ambient temperature, control the start-up of cross valve, through increasing temperature judgement condition when starting the cross valve, can effectively avoid the start-up failure of cross valve, guarantee simultaneously that the cross valve also can normally start under more abominable condition, the control of elaborating its start-up moment has reduced the harm to the cross valve, has improved cross valve life.
The foregoing embodiment numbers of the present application are merely for describing, and do not represent advantages or disadvantages of the embodiments.
The integrated units in the above embodiments may be stored in the above-described computer-readable storage medium if implemented in the form of software functional units and sold or used as separate products. Based on such understanding, the technical solution of the present application may be embodied in essence or a part contributing to the prior art or all or part of the technical solution in the form of a software product stored in a storage medium, including several instructions to cause one or more computer devices (which may be personal computers, servers or network devices, etc.) to perform all or part of the steps of the methods described in the various embodiments of the present application.
In the foregoing embodiments of the present application, the descriptions of the embodiments are emphasized, and for a portion of this disclosure that is not described in detail in this embodiment, reference is made to the related descriptions of other embodiments.
In several embodiments provided in the present application, it should be understood that the disclosed client may be implemented in other manners. The above-described embodiments of the apparatus are merely exemplary, and the division of the units, such as the division of the units, is merely a logical function division, and may be implemented in another manner, for example, multiple units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interfaces, units or modules, or may be in electrical or other forms.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The foregoing is merely a preferred embodiment of the present application and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present application and are intended to be comprehended within the scope of the present application.
Claims (10)
1. The four-way valve starting control method is characterized by comprising the following steps of:
responding to a heating instruction of a user;
if the four-way valve is in a non-energized state, entering a four-way valve starting control mode;
detecting the coil temperature and the environment temperature of the air conditioner in real time in a four-way valve starting control mode;
and controlling the starting of the four-way valve according to the temperature of the coil pipe and the ambient temperature.
2. The method of claim 1, wherein controlling the activation of the four-way valve based on the coil temperature and the ambient temperature comprises:
judging whether the coil temperature and the environment temperature meet a first preset condition, if so, adjusting the running state of the air conditioner until the coil temperature and the environment temperature do not meet the first preset condition, and then controlling the four-way valve to start according to a preset control strategy;
judging whether the temperature of the coil pipe meets a second preset condition, if so, adjusting the running state of the air conditioner until the temperature of the coil pipe does not meet the second preset condition, judging before reversing the four-way valve, and controlling the four-way valve to reverse when the starting condition of the four-way valve is met.
3. The method as recited in claim 2, further comprising:
and if the coil temperature and the environment temperature meet the first preset condition and the second preset condition at the same time, adjusting the running state of the air conditioner until the coil temperature and the environment temperature do not meet the first preset condition, and then controlling the four-way valve to start according to a preset control strategy.
4. The method of claim 2, wherein the step of determining the position of the substrate comprises,
the coil temperature includes: coil temperature T of outdoor unit A Coil temperature T of indoor unit B ；
The ambient temperature includes: outdoor ambient temperature T Outer part ；
The first preset condition includes: coil temperature T of outdoor unit A < a first threshold T1, and T Outer part -T A ＞△T1；
The second preset condition includes: indoor set coil pipe temperature T B > second threshold T2.
5. The method of claim 4, wherein adjusting the operating state of the air conditioner until the coil temperature and the ambient temperature do not meet a first preset condition comprises:
starting the compressor to make the four-way valve in a non-energized state, and improving the temperature T of the outdoor coil by utilizing the heat exchange effect of the outdoor heat exchanger A Defrosting is carried out until the coil temperature and the environment temperature do not meet a first preset condition.
6. The method of claim 5, wherein the four-way valve is controlled to be started according to a preset control strategy, specifically:
judging whether the starting accumulated time length of the compressor is smaller than or equal to a first preset time length, if so, controlling the compressor to run at low frequency, and then controlling the four-way valve to change direction, otherwise, controlling the compressor to stop running, and judging before the four-way valve changes direction.
7. The method according to claim 4, wherein the adjusting the operation state of the air conditioner until the coil temperature does not satisfy a second preset condition is:
starting an indoor fan until the temperature T of the coil pipe of the indoor unit B The second preset condition is not satisfied.
8. The method according to any one of claims 4 to 7, wherein the performing the four-way valve pre-commutation determination comprises:
dividing the outdoor environment temperature into different temperature intervals, and establishing a corresponding relation table of reference pressure difference and compressor current value required by the safety reversing of the four-way valve in each temperature interval;
judging a temperature interval to which the current outdoor environment temperature belongs;
inquiring a reference pressure difference or a compressor current value required by the safety reversing of the four-way valve in the corresponding relation table under the temperature interval;
and if the reference pressure difference at two sides of the current four-way valve is equal to the queried reference pressure difference, or the current value of the current compressor is equal to the queried current value, controlling the four-way valve to change direction.
9. A four-way valve start-up control device, characterized by comprising:
the response module is used for responding to the heating instruction of the user;
the control module is used for entering a four-way valve starting control mode if the four-way valve is in a non-electrified state;
the detection module is used for detecting the coil temperature and the environment temperature of the air conditioner in real time in a four-way valve starting control mode;
the control module is also used for controlling the starting of the four-way valve according to the temperature of the coil pipe and the ambient temperature.
10. An air conditioning unit, comprising:
the device comprises a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory are communicated with each other through the communication bus;
a memory for storing a computer program;
a processor for implementing the method of any one of claims 1 to 8 when executing a program stored on a memory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311508913.XA CN117663423A (en) | 2023-11-13 | 2023-11-13 | Four-way valve starting control method and device and air conditioning unit |
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| CN202311508913.XA CN117663423A (en) | 2023-11-13 | 2023-11-13 | Four-way valve starting control method and device and air conditioning unit |
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| CN117663423A true CN117663423A (en) | 2024-03-08 |
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| CN202311508913.XA Pending CN117663423A (en) | 2023-11-13 | 2023-11-13 | Four-way valve starting control method and device and air conditioning unit |
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