CN106016459B - Air conditioner and its control method - Google Patents
Air conditioner and its control method Download PDFInfo
- Publication number
- CN106016459B CN106016459B CN201610392423.1A CN201610392423A CN106016459B CN 106016459 B CN106016459 B CN 106016459B CN 201610392423 A CN201610392423 A CN 201610392423A CN 106016459 B CN106016459 B CN 106016459B
- Authority
- CN
- China
- Prior art keywords
- temperature
- air conditioner
- preset
- coil temperature
- equal
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
Abstract
The invention discloses a kind of air conditioner and its control methods, the described method comprises the following steps：After air conditioner receives heating power-on instruction, the first coil temperature of indoor heat exchanger is obtained after first preset time that is delayed, and it is judged；If the first coil temperature is less than or equal to the first preset temperature, the second coil temperature of indoor heat exchanger is obtained after second preset time that is delayed, and the third coil temperature of indoor heat exchanger is obtained after the third preset time that is delayed；Second coil temperature and third coil temperature are judged；If the second coil temperature is less than or equal to the second preset temperature or third coil temperature is less than or equal to the second preset temperature, four-way valve commutation failure is judged, and protection control is carried out to air conditioner.This method can effectively judge whether four-way valve commutates success, to be protected when four-way valve commutation is unsuccessful to air conditioner, effectively prevent because commutate it is unsuccessful caused by evaporimeter frosting the phenomenon that.
Description
Technical field
The present invention relates to air-conditioning technical field, in particular to the control method of a kind of air conditioner and a kind of air conditioner.
Background technique
For inventor when the air conditioner to long fortune room is monitored, discovery has the full thickness of knot on the heating evaporator of three model machines
Thick frost, field assay discovery, caused by not commutated by four-way valve entirely.Wherein, two be due to brownout or
Other reasons cause to commutate unsuccessful once in a while, and bringing the voltage up or directly restarting again can run well, and in addition
One is to be loosened due to the line of four-way valve, be not plugged four-way valve is caused not power on, is commutated so as to cause four-way valve unsuccessful.
Above several situations, air conditioner can operate normally in cooling mode, but when air conditioner heat-production starting, by
It cannot commutate in four-way valve, the refrigerant flow direction under practical refrigerant flow direction or refrigeration mode, since outdoor environment temperature is relatively low,
Therefore long-play, which will lead to, ties full thick frost in indoor evaporator, influence user's normal use.
Therefore, how effectively to judge whether four-way valve commutates successfully to become and bite problem to be solved at present.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, of the invention
One purpose is to propose a kind of control method of air conditioner, and this method can effectively judge whether four-way valve commutates success,
To protect when four-way valve commutation is unsuccessful to air conditioner, the line because of brownout or four-way valve is effectively prevent to loosen
The phenomenon that evaporimeter frosting caused by caused four-way valve commutation is unsuccessful.
It is another object of the present invention to propose a kind of air conditioner.
To achieve the above object, one aspect of the present invention embodiment proposes a kind of control method of air conditioner, the air-conditioning
Device includes outdoor unit and indoor unit, and the outdoor unit includes four-way valve, and the indoor unit includes indoor heat exchanger, the method packet
Include following steps：After the air conditioner receives heating power-on instruction, the interior is obtained after first preset time that is delayed and is changed
First coil temperature of hot device, and judge whether first coil temperature is less than or equal to the first preset temperature；If described
One coil temperature is less than or equal to first preset temperature, then obtains the indoor heat exchanger after being delayed the second preset time
Second coil temperature, and obtain after being delayed third preset time the third coil temperature of the indoor heat exchanger, wherein it is described
Third preset time is greater than second preset time；It is default to judge whether second coil temperature is less than or equal to described second
Temperature, and judge whether the third coil temperature is less than or equal to second preset temperature；And if second coil pipe
Temperature is less than or equal to second preset temperature or the third coil temperature is less than or equal to second preset temperature, then
Judge the four-way valve commutation failure, and protection control is carried out to the air conditioner.
The control method of air conditioner according to an embodiment of the present invention, after air conditioner receives heating power-on instruction, delay
The first coil temperature of indoor heat exchanger is obtained after first preset time and it is judged, if the first coil temperature is less than
Equal to the first preset temperature, then the second coil temperature of indoor heat exchanger is obtained after second preset time that is delayed, and be delayed
The third coil temperature that indoor heat exchanger is obtained after third preset time, then judges whether the second coil temperature is less than or equal to the
Two preset temperatures, and judge whether third coil temperature is less than or equal to the second preset temperature, if the second coil temperature is less than etc.
It is less than or equal to the second preset temperature in the second preset temperature or third coil temperature, then judges four-way valve commutation failure, and right
Air conditioner carries out protection control.This method can effectively judge whether four-way valve commutates success, with four-way valve commutation not at
Air conditioner is protected when function, four-way valve commutation caused by effectivelying prevent the line because of brownout or four-way valve to loosen etc. is not
The phenomenon that evaporimeter frosting caused by success.
According to one embodiment of present invention, when first coil temperature is more than or equal to third preset temperature, judgement
The four-way valve normal commutation, and control the air conditioner and run with heating mode, wherein the third preset temperature is greater than institute
State the first preset temperature.
According to one embodiment of present invention, when first coil temperature is less than or equal to first preset temperature,
If second coil temperature is greater than second preset temperature and the third coil temperature is greater than the described second default temperature
Degree, then judge the four-way valve normal commutation, and control the air conditioner and run with heating mode.
According to one embodiment of present invention, carrying out protection control to the air conditioner includes：The air conditioner is controlled to close
Machine, and the display screen for controlling the indoor unit shows fault message.
According to one embodiment of present invention, the control method of above-mentioned air conditioner further includes：By counter to described
The number of four-way valve commutation failure is counted；When the count value of the counter reaches preset value, the air conditioner is controlled
Forced shutdown.
To achieve the above object, another aspect of the present invention embodiment proposes a kind of air conditioner, including：Outdoor unit, it is described
Outdoor unit includes four-way valve；Indoor unit, the indoor unit include indoor heat exchanger；Control module, the control module are used for
After the air conditioner receives heating power-on instruction, the first coil pipe of the indoor heat exchanger is obtained after first preset time that is delayed
Temperature, and judge whether first coil temperature is less than or equal to the first preset temperature, wherein if first coil temperature
Less than or equal to first preset temperature, then the second coil pipe temperature of the indoor heat exchanger is obtained after being delayed the second preset time
It spends, and obtains the third coil temperature of the indoor heat exchanger after being delayed third preset time, the control module judges institute
It states whether the second coil temperature is less than or equal to second preset temperature, and judges whether the third coil temperature is less than or equal to
Second preset temperature, if second coil temperature is less than or equal to second preset temperature or the third disk
Tube temperature degree is less than or equal to second preset temperature, and the control module then judges the four-way valve commutation failure, and to described
Air conditioner carries out protection control, wherein the third preset time is greater than second preset time.
Air conditioner according to an embodiment of the present invention, control module is after air conditioner receives heating power-on instruction, delay the
After one preset time obtain indoor heat exchanger the first coil temperature and it is judged, if the first coil temperature be less than etc.
In the first preset temperature, then the second coil temperature of indoor heat exchanger is obtained after second preset time that is delayed, and in delay the
The third coil temperature of indoor heat exchanger is obtained after three preset times, then, control module judges whether the second coil temperature is small
In being equal to the second preset temperature, and judge whether third coil temperature is less than or equal to the second preset temperature, if the second coil pipe temperature
Degree is less than or equal to the second preset temperature or third coil temperature is less than or equal to the second preset temperature, then judges that four-way valve commutates
Failure, and protection control is carried out to air conditioner.The air conditioner can effectively judge whether four-way valve commutates success, in four-way
Valve commutation is protected when unsuccessful, effectively prevent the line because of brownout or four-way valve loosen it is equal caused by four-way valve commutation
The phenomenon that evaporimeter frosting caused by unsuccessful.
According to one embodiment of present invention, described when first coil temperature is more than or equal to third preset temperature
Control module judges the four-way valve normal commutation, and controls the air conditioner and run with heating mode, wherein the third is pre-
If temperature is greater than first preset temperature.
According to one embodiment of present invention, when first coil temperature is less than or equal to first preset temperature,
If second coil temperature is greater than second preset temperature and the third coil temperature is greater than the described second default temperature
Degree, the control module then judges the four-way valve normal commutation, and controls the air conditioner and run with heating mode.
According to one embodiment of present invention, when the control module carries out communtation protection to the air conditioner, the control
Molding block controls the air conditioner shutdown, and the display screen for controlling the indoor unit shows fault message.
According to one embodiment of present invention, the control module also passes through counter to the four-way valve commutation failure
Number is counted, and when the count value of the counter reaches preset value, controls the air conditioner forced shutdown.
Detailed description of the invention
Fig. 1 is the flow chart of the control method of air conditioner according to an embodiment of the present invention.
Fig. 2 is the block diagram of air conditioner according to an embodiment of the invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
The air conditioner proposed according to embodiments of the present invention and its control method described with reference to the accompanying drawings.
Fig. 1 is the flow chart of the control method of air conditioner according to an embodiment of the present invention.Wherein, air conditioner includes outdoor unit
And indoor unit, outdoor unit include four-way valve, indoor unit includes indoor heat exchanger.
As shown in Figure 1, the control method of the air conditioner includes the following steps：
S1 obtains the of indoor heat exchanger after air conditioner receives heating power-on instruction after first preset time that is delayed
One coil temperature, and judge whether the first coil temperature is less than or equal to the first preset temperature.Wherein, the first preset time and first
Preset temperature can be demarcated according to the actual situation, such as the first preset time can be 5min, and the first preset temperature can be with
It is 9.5 DEG C.
S2 obtains room after being delayed the second preset time if the first coil temperature is less than or equal to the first preset temperature
Second coil temperature of interior heat exchanger, and after the third preset time that is delayed obtain indoor heat exchanger third coil temperature.Its
In, third preset time is greater than the second preset time, the second preset time and third preset time can according to the actual situation into
Rower is fixed, for example, the second preset time can be 20min, third preset time can be 25min.
According to one embodiment of present invention, when the first coil temperature is more than or equal to third preset temperature, judge four-way
Valve normal commutation, and control air conditioner and run with heating mode, wherein third preset temperature is greater than the first preset temperature, for example,
Third preset temperature can be 10 DEG C.
Specifically, it when air conditioner receives heating power-on instruction, is delayed after the first preset time such as 5min, starts to detect
The coil temperature of current indoor heat exchanger (evaporator), for example, can be by the way that the temperature in the middle part of the coil pipe of heat exchanger indoors is arranged
The coil temperature for spending sensor detection indoor heat exchanger, is denoted as the first coil temperature.Then the first coil temperature is judged,
If the first coil temperature is greater than or equal to such as 10 DEG C of third preset temperature, illustrates that four-way valve commutates successfully, do not need at this time
Protection control is carried out, air conditioner is run with heating mode；And if the first coil temperature is less than or equal to the first preset temperature such as
It 9.5 DEG C, then controls air conditioner and continues to run, and obtain the second coil pipe temperature of indoor heat exchanger after second preset time that is delayed
It spends, and obtains the third coil temperature of indoor heat exchanger after the third preset time that is delayed, and judge it, to avoid
Due to judging problem by accident caused by indoor heat exchanger bias current.
S3, judges whether the second coil temperature is less than or equal to the second preset temperature, and judges whether third coil temperature is small
In equal to the second preset temperature.Wherein, the second preset temperature can be demarcated according to the actual situation, such as the second preset temperature
It can be -10 DEG C.
S4, if the second coil temperature is less than or equal to the second preset temperature or third coil temperature is less than or equal to second
Preset temperature then judges four-way valve commutation failure, and carries out protection control to air conditioner.
Specifically, air conditioner is after reforwarding if the first coil temperature is less than or equal to such as 9.5 DEG C of the first preset temperature
It goes, and detects the disk of indoor heat exchanger when air conditioner runs the second preset time such as 20min and third preset time such as 25min
Tube temperature degree is denoted as the second coil temperature and third coil temperature respectively, and judges the two.If the second coil temperature and
There is one to be less than or equal to such as -10 DEG C of the second preset temperature in third coil temperature, then judges that four-way valve does not commutate, need at this time pair
Air conditioner carries out protection control.
According to one embodiment of present invention, carrying out protection control to air conditioner includes：Air conditioner shutdown is controlled, and is controlled
The display screen of indoor unit shows fault message, and air conditioner from continuing to run and indoor heat exchanger is caused frosting problem occur to prevent,
It carries out fault message by display screen simultaneously to show, to remind user to repair.
Further, according to one embodiment of present invention, when the first coil temperature is less than or equal to the first preset temperature,
If the second coil temperature is greater than the second preset temperature and third coil temperature is greater than the second preset temperature, judge four-way valve just
Often commutation, and control air conditioner and run with heating mode.That is, if the second coil temperature and third coil temperature are big
In such as -10 DEG C of the second preset temperature, then judges that four-way valve commutates successfully, do not need to carry out air conditioner protection control at this time, it is empty
Device continuation is adjusted to run with heating mode.
In order to further increase the accuracy of judgement, in one embodiment of the invention, the control of above-mentioned air conditioner
Method further includes：It is counted by number of the counter to four-way valve commutation failure；When the count value of counter reaches default
When value, air conditioner forced shutdown is controlled.Wherein, preset value can be demarcated according to the actual situation, such as preset value can be
3。
That is, can determine whether four-way valve commutates success by repeatedly judging, to improve the accuracy of judgement,
Avoid due to caused by indoor heat exchanger bias current only by detection indoor heat exchanger coil temperature caused by erroneous judgement, from
And antifrost is caused to protect insecure problem.
Specifically, after judging four-way valve commutation failure for the first time, control air conditioner shutdown, the 4th preset time of delay is such as
After 3min, air conditioner is controlled again and is started with heating mode, the second preset time of delay is as obtained indoor heat exchanger after 20min
4th coil temperature, and the 5th coil temperature of indoor heat exchanger is obtained after delay third preset time such as 25min, and to the
Four coil temperatures and the 5th coil temperature are judged.If have in the 4th coil temperature and the 5th coil temperature one be less than or
Equal to such as -10 DEG C of the second preset temperature, then four-way valve commutation failure is judged again, and judge four-way valve again according to above-mentioned steps
Whether commutation failure.If the number of four-way valve commutation failure has reached preset value such as 3, four-way valve commutation failure is confirmed, this
When control air conditioner forced shutdown, and fault message is shown by the display screen of indoor unit, to remind user, while can
Fault message is pushed into after-sales service center, so that maintenance personal is handled in time.
In conclusion the control method of the air conditioner of the embodiment of the present invention, after air conditioner receives heating power-on instruction,
Confirm whether four-way valve commutates success by repeatedly judging, to be protected when four-way valve commutation is unsuccessful to air conditioner,
Evaporimeter frosting caused by the commutation of four-way valve caused by effectivelying prevent the line because of brownout or four-way valve to loosen etc. is unsuccessful
The phenomenon that, and method is simple and reliable.
Fig. 2 is the block diagram of air conditioner according to an embodiment of the invention.As shown in Fig. 2, the air conditioner includes：
Outdoor unit 10, indoor unit 20 and control module (not specifically illustrated in figure).
Wherein, outdoor unit 10 includes four-way valve 11, and indoor unit 20 includes indoor heat exchanger 21.Control module is used in air-conditioning
After device receives heating power-on instruction, the first coil temperature of indoor heat exchanger 21 is obtained after first preset time that is delayed, and is sentenced
Whether disconnected first coil temperature is less than or equal to the first preset temperature, if the first coil temperature is less than or equal to the first preset temperature,
The second coil temperature of indoor heat exchanger 21 is then obtained after second preset time that is delayed, and is obtained after being delayed third preset time
The third coil temperature of indoor heat exchanger 21 is taken, control module judges whether the second coil temperature is less than or equal to the second default temperature
Degree, and judge whether third coil temperature is less than or equal to the second preset temperature, if the second coil temperature is less than or equal to second in advance
If temperature or third coil temperature are less than or equal to the second preset temperature, control module then judges 11 commutation failure of four-way valve, and
Protection control is carried out to air conditioner, wherein third preset time is greater than the second preset time.
According to one embodiment of present invention, when the first coil temperature is more than or equal to third preset temperature, control module
Judge 11 normal commutation of four-way valve, and control air conditioner and run with heating mode, wherein it is default that third preset temperature is greater than first
Temperature.
Specifically, it when air conditioner receives heating power-on instruction, is delayed after the first preset time such as 5min, starts to detect
The coil temperature of current indoor heat exchanger 21, for example, can be passed by the way that the temperature in the middle part of the coil pipe of heat exchanger 21 indoors is arranged
Sensor detects the coil temperature of indoor heat exchanger 21, is denoted as the first coil temperature.Then the first coil temperature is judged, such as
The first coil temperature of fruit is greater than or equal to such as 10 DEG C of third preset temperature, then illustrates that four-way valve 11 commutates successfully, do not need at this time
Protection control is carried out, air conditioner is run with heating mode；And if the first coil temperature is less than or equal to the first preset temperature such as
9.5 DEG C, then air conditioner continues to run, and runs the second preset time such as 20min and third preset time such as 25min in air conditioner
When detect the coil temperature of indoor heat exchanger 21, be denoted as the second coil temperature and third coil temperature respectively, and carry out to the two
Judgement.If there is one to be less than or equal to such as -10 DEG C of the second preset temperature in the second coil temperature and third coil temperature, sentence
Disconnected four-way valve 11 does not commutate, needs to carry out protection control to air conditioner at this time.
According to one embodiment of present invention, when control module carries out communtation protection to air conditioner, control module control is empty
Device shutdown is adjusted, and the display screen for controlling indoor unit 20 shows fault message, air conditioner from continuing to run and interior is caused to be changed to prevent
There is frosting problem in hot device, while carrying out fault message by display screen and showing, to remind user to repair.
Further, according to one embodiment of present invention, when the first coil temperature is less than or equal to the first preset temperature,
If the second coil temperature is greater than the second preset temperature and third coil temperature and is greater than the second preset temperature, control module if, judges
11 normal commutation of four-way valve, and control air conditioner and run with heating mode.That is, if the second coil temperature and third disk
Tube temperature degree is all larger than such as -10 DEG C of the second preset temperature, and control module then judges that four-way valve 11 commutates successfully.
In order to further increase the accuracy of judgement, in one embodiment of the invention, control module also passes through counting
Device counts the number of 11 commutation failure of four-way valve, and when the count value of counter reaches preset value, controls air conditioner
Forced shutdown.
That is, can determine whether four-way valve commutates success by repeatedly judging, to improve the accuracy of judgement,
Avoid due to caused by indoor heat exchanger bias current only by detection indoor heat exchanger coil temperature caused by erroneous judgement, from
And antifrost is caused to protect insecure problem.
Specifically, after judging 11 commutation failure of four-way valve for the first time, control air conditioner shutdown, the 4th preset time of delay is such as
After 3min, air conditioner is controlled again and is started with heating mode, obtains indoor heat exchanger 21 after the second preset time of delay such as 20min
The 4th coil temperature, and delay third preset time such as 25min after obtain indoor heat exchanger 21 the 5th coil temperature, and
4th coil temperature and the 5th coil temperature are judged.If had in the 4th coil temperature and the 5th coil temperature one small
In or be equal to the second preset temperature such as -10 DEG C, then judge four-way valve commutation failure again, and judge four again according to above-mentioned steps
Port valve whether commutation failure.If the number of 11 commutation failure of four-way valve has reached preset value such as 3, confirm that four-way valve 11 commutates
Failure controls air conditioner forced shutdown at this time, and shows fault message by the display screen of indoor unit 20, to mention to user
It wakes up, while fault message can be pushed to after-sales service center, so that maintenance personal is handled in time.
In conclusion the air conditioner of the embodiment of the present invention, after receiving heating power-on instruction, by repeatedly judging come really
Recognize four-way valve whether to commutate success, to be protected when four-way valve commutation is unsuccessful, effectively prevent because of brownout or four
The phenomenon that evaporimeter frosting caused by the commutation of four-way valve caused by the line of port valve loosens etc. is unsuccessful, and method is simple and reliable.
In the description of the present invention, it is to be understood that, term " first ", " second " are used for description purposes only, and cannot
It is interpreted as indication or suggestion relative importance or implicitly indicates the quantity of indicated technical characteristic.Define as a result, " the
One ", the feature of " second " can explicitly or implicitly include at least one of the features.In the description of the present invention, " multiple "
It is meant that at least two, such as two, three etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements, unless otherwise restricted clearly.For those of ordinary skill in the art
For, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (10)
1. a kind of control method of air conditioner, which is characterized in that the air conditioner includes outdoor unit and indoor unit, the outdoor unit
Including four-way valve, the indoor unit includes indoor heat exchanger, be the described method comprises the following steps：
After the air conditioner receives heating power-on instruction, the of the indoor heat exchanger is obtained after first preset time that is delayed
One coil temperature, and judge whether first coil temperature is less than or equal to the first preset temperature；
If first coil temperature is less than or equal to first preset temperature, institute is obtained after being delayed the second preset time
The second coil temperature of indoor heat exchanger is stated, and obtains the third coil pipe of the indoor heat exchanger after being delayed third preset time
Temperature, wherein the third preset time is greater than second preset time；
Judge whether second coil temperature is less than or equal to the second preset temperature, and judges whether the third coil temperature is small
In being equal to second preset temperature, first preset temperature is greater than second preset temperature；And
If second coil temperature is less than or equal to second preset temperature or the third coil temperature is less than or equal to
Second preset temperature then judges the four-way valve commutation failure, and carries out protection control to the air conditioner.
2. the control method of air conditioner according to claim 1, which is characterized in that when first coil temperature be greater than etc.
When third preset temperature, the four-way valve normal commutation is judged, and control the air conditioner and run with heating mode, wherein
The third preset temperature is greater than first preset temperature.
3. the control method of air conditioner according to claim 1, which is characterized in that when first coil temperature be less than etc.
When first preset temperature, if second coil temperature is greater than second preset temperature and the third coil pipe temperature
Degree is greater than second preset temperature, then judges the four-way valve normal commutation, and control the air conditioner and transport with heating mode
Row.
4. the control method of air conditioner according to claim 1, which is characterized in that carry out protection control to the air conditioner
Including：
The air conditioner shutdown is controlled, and the display screen for controlling the indoor unit shows fault message.
5. the control method of air conditioner described in any one of -4 according to claim 1, which is characterized in that further include：
It is counted by number of the counter to the four-way valve commutation failure；
When the count value of the counter reaches preset value, the air conditioner forced shutdown is controlled.
6. a kind of air conditioner, which is characterized in that including：
Outdoor unit, the outdoor unit include four-way valve；
Indoor unit, the indoor unit include indoor heat exchanger；
Control module, the control module is used for after the air conditioner receives heating power-on instruction, when delay first is default
Between after obtain the first coil temperature of the indoor heat exchanger, and it is pre- to judge whether first coil temperature is less than or equal to first
If temperature, wherein if first coil temperature is less than or equal to first preset temperature, in second preset time that is delayed
The second coil temperature of the indoor heat exchanger is obtained afterwards, and obtains the indoor heat exchanger after being delayed third preset time
Third coil temperature, the control module judge whether second coil temperature is less than or equal to the second preset temperature, and judge
Whether the third coil temperature is less than or equal to second preset temperature, if second coil temperature is less than or equal to described
Second preset temperature or the third coil temperature are less than or equal to second preset temperature, and the control module then judges
The four-way valve commutation failure, and protection control is carried out to the air conditioner, wherein the third preset time is greater than described the
Two preset times, first preset temperature are greater than second preset temperature.
7. air conditioner according to claim 6, which is characterized in that when first coil temperature is default more than or equal to third
When temperature, the control module judges the four-way valve normal commutation, and controls the air conditioner and run with heating mode,
In, the third preset temperature is greater than first preset temperature.
8. air conditioner according to claim 6, which is characterized in that when first coil temperature is less than or equal to described first
When preset temperature, if second coil temperature is greater than second preset temperature and the third coil temperature is greater than described
Second preset temperature, the control module then judge the four-way valve normal commutation, and control the air conditioner with heating mode
Operation.
9. air conditioner according to claim 6, which is characterized in that the control module carries out commutation guarantor to the air conditioner
When shield, the control module controls the air conditioner shutdown, and the display screen for controlling the indoor unit shows fault message.
10. the air conditioner according to any one of claim 6-9, which is characterized in that the control module also passes through counting
Device counts the number of the four-way valve commutation failure, and when the count value of the counter reaches preset value, control
The air conditioner forced shutdown.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610392423.1A CN106016459B (en) | 2016-06-03 | 2016-06-03 | Air conditioner and its control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610392423.1A CN106016459B (en) | 2016-06-03 | 2016-06-03 | Air conditioner and its control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106016459A CN106016459A (en) | 2016-10-12 |
| CN106016459B true CN106016459B (en) | 2018-11-27 |
Family
ID=57090711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610392423.1A Active CN106016459B (en) | 2016-06-03 | 2016-06-03 | Air conditioner and its control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106016459B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108759205A (en) * | 2018-06-08 | 2018-11-06 | 广东美的暖通设备有限公司 | The method for controlling oil return of air-conditioning system and air-conditioning system, device |
| CN108954714B (en) * | 2018-07-25 | 2020-12-15 | 广东美的暖通设备有限公司 | Air conditioner and starting control method thereof |
| CN109405329B (en) * | 2018-09-04 | 2020-09-08 | 珠海格力电器股份有限公司 | Heat pump unit control method and device, storage medium and heat pump unit |
| CN110044009A (en) * | 2019-04-25 | 2019-07-23 | 宁波奥克斯电气股份有限公司 | A kind of four-way valve switch failure detection method, device and air conditioner |
| CN111520816A (en) * | 2020-05-13 | 2020-08-11 | 宁波奥克斯电气股份有限公司 | Method and device for detecting reversing abnormality of four-way valve, air conditioner and storage medium |
| CN111854034B (en) * | 2020-06-10 | 2022-01-25 | 宁波奥克斯电气股份有限公司 | Air conditioner control method for preventing four-way valve from being blocked and air conditioner |
| CN114484726A (en) * | 2020-10-23 | 2022-05-13 | 广东美的制冷设备有限公司 | Reversing abnormity detection method of four-way valve, air conditioner and readable storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09243138A (en) * | 1996-03-12 | 1997-09-16 | Fujitsu General Ltd | Method for controlling air conditioner |
| KR20020038377A (en) * | 2000-11-17 | 2002-05-23 | 구자홍 | 4-way valve hindrance sensing device and sensing method of heat-pump air conditioner |
| JP2002340386A (en) * | 2001-05-18 | 2002-11-27 | Fujitsu General Ltd | Control method for air conditioner |
| CN101561363A (en) * | 2009-05-22 | 2009-10-21 | 宁波奥克斯电气有限公司 | Method for judging fault of four-way change valve of air conditioner |
| CN103104962A (en) * | 2013-02-27 | 2013-05-15 | 四川长虹空调有限公司 | Method for detecting four-way valve of air-conditioner |
-
2016
- 2016-06-03 CN CN201610392423.1A patent/CN106016459B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09243138A (en) * | 1996-03-12 | 1997-09-16 | Fujitsu General Ltd | Method for controlling air conditioner |
| KR20020038377A (en) * | 2000-11-17 | 2002-05-23 | 구자홍 | 4-way valve hindrance sensing device and sensing method of heat-pump air conditioner |
| JP2002340386A (en) * | 2001-05-18 | 2002-11-27 | Fujitsu General Ltd | Control method for air conditioner |
| CN101561363A (en) * | 2009-05-22 | 2009-10-21 | 宁波奥克斯电气有限公司 | Method for judging fault of four-way change valve of air conditioner |
| CN103104962A (en) * | 2013-02-27 | 2013-05-15 | 四川长虹空调有限公司 | Method for detecting four-way valve of air-conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106016459A (en) | 2016-10-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106016459B (en) | Air conditioner and its control method | |
| CN106196428B (en) | Air conditioner and its anti-freeze control method | |
| CN105783203B (en) | The method for detecting abnormality of air conditioner and its indoor unit | |
| CN105423495B (en) | Air conditioner and its anti-freeze control method and device | |
| JP6061819B2 (en) | Air conditioner | |
| CN104896669B (en) | Air conditioner and its protection control method | |
| WO2020024695A1 (en) | Control method and control device of air conditioner and air conditioner | |
| KR101229341B1 (en) | Operation apparatus of compressor and control method thereof | |
| CN105972758B (en) | Defrosting control method, defrosting control device and the air conditioner of air conditioner | |
| JPH08261542A (en) | Air conditioner | |
| JPH09243138A (en) | Method for controlling air conditioner | |
| JP4844147B2 (en) | Air conditioner | |
| JP3445861B2 (en) | Air conditioner | |
| CN111121223B (en) | Fluorine-lacking protection method of air conditioner, air conditioner and storage medium | |
| JP6313021B2 (en) | Air conditioner | |
| JP2007155226A (en) | Air conditioner | |
| JP3590499B2 (en) | Air conditioner | |
| JP3589203B2 (en) | Air conditioner | |
| JP2011158121A (en) | Air conditioner | |
| CN105135601B (en) | The control method and control device of air-conditioning system | |
| CN106871367B (en) | Air conditioner and control method and device of double-cylinder compressor thereof | |
| CN108917270A (en) | The defrost monitoring method and monitoring system of refrigerator | |
| JPH05332647A (en) | Air conditioner | |
| JPH1183211A (en) | High pressure protective controller for refrigerator | |
| JP2001182984A (en) | Air conditioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |