CN106989479B - Air conditioner and control method and device of double-cylinder compressor thereof - Google Patents
Air conditioner and control method and device of double-cylinder compressor thereof Download PDFInfo
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- CN106989479B CN106989479B CN201710139692.1A CN201710139692A CN106989479B CN 106989479 B CN106989479 B CN 106989479B CN 201710139692 A CN201710139692 A CN 201710139692A CN 106989479 B CN106989479 B CN 106989479B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
Abstract
The invention discloses an air conditioner and a control method and a control device of a double-cylinder compressor of the air conditioner, wherein the method comprises the following steps: acquiring an operation mode of an air conditioner; detecting the temperature of an indoor heat exchanger in the air conditioner in real time to obtain a temperature detection value; judging whether to start the double-cylinder compressor and determining the working mode of the double-cylinder compressor after the double-cylinder compressor is started according to the running mode and the temperature detection value of the air conditioner, wherein the working mode of the double-cylinder compressor after the double-cylinder compressor is started comprises a single-cylinder working mode and a double-cylinder working mode. According to the method provided by the invention, the temperature of the air blown out by the air conditioner can be effectively controlled, the comfort of a user using the air conditioner is improved, and the safe and reliable operation of the air conditioner can be ensured.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a control method of a double-cylinder compressor in an air conditioner, a control device of the double-cylinder compressor in the air conditioner and the air conditioner.
Background
The energy efficiency ratio of the double-cylinder variable-capacity compressor is higher than that of a common constant-speed single-cylinder compressor, so that the double-cylinder variable-capacity compressor has larger refrigerating capacity and heating capacity. For users, the double-cylinder variable-capacity compressor has faster refrigerating and heating effects. When the compressor operates in the double-cylinder working mode, the temperature of the indoor heat exchanger of the air conditioner can be reduced or increased, and when the temperature of the indoor heat exchanger is too low or too high, the blown air can be too cold or too hot, so that the normal operation of the air conditioner is influenced.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the art described above. Therefore, an object of the present invention is to provide a method for controlling a dual-cylinder compressor in an air conditioner, which can effectively control the temperature of air blown out by the air conditioner, improve the comfort of a user using the air conditioner, and ensure the safe and reliable operation of the air conditioner.
The second purpose of the invention is to provide a control device of a double-cylinder compressor in an air conditioner.
A third object of the present invention is to provide an air conditioner.
In order to achieve the above object, an embodiment of a first aspect of the present invention provides a method for controlling a dual-cylinder compressor in an air conditioner, the method comprising the following steps: acquiring an operation mode of the air conditioner; detecting the temperature of an indoor heat exchanger in the air conditioner in real time to obtain a temperature detection value; and judging whether to start the double-cylinder compressor and determining the working mode of the double-cylinder compressor after the double-cylinder compressor is started according to the running mode of the air conditioner and the temperature detection value, wherein the working mode of the double-cylinder compressor after the double-cylinder compressor is started comprises a single-cylinder working mode and a double-cylinder working mode.
According to the control method of the double-cylinder compressor in the air conditioner, the operation mode of the air conditioner is obtained, the temperature of the indoor heat exchanger in the air conditioner is detected, whether the double-cylinder compressor is started or not is judged according to the operation mode of the air conditioner and the temperature of the indoor heat exchanger, and the working mode after the double-cylinder compressor is started is determined, so that the temperature of air blown out by the air conditioner can be effectively controlled, the comfort of a user using the air conditioner is improved, the air conditioner can be protected from being damaged, and the safe and reliable operation of the air conditioner is effectively guaranteed.
In addition, the control method for the two-cylinder compressor in the air conditioner according to the above embodiment of the present invention may further have the following additional technical features:
specifically, the method for judging whether to start the dual-cylinder compressor and determining the working mode of the dual-cylinder compressor after the dual-cylinder compressor is started according to the running mode of the air conditioner and the temperature detection value comprises the following steps: when the operation mode of the air conditioner is a refrigeration mode and the temperature detection value is in a descending trend, judging whether the temperature detection value is smaller than a first temperature threshold value and larger than or equal to a second temperature threshold value, wherein the first temperature threshold value is larger than the second temperature threshold value; if the temperature detection value is larger than or equal to the first temperature threshold value, the double-cylinder compressor is allowed to start to operate in the double-cylinder working mode; if the temperature detection value is smaller than the first temperature threshold value and larger than or equal to the second temperature threshold value, the double-cylinder compressor is allowed to start to operate in the single-cylinder working mode; and if the temperature detection value is smaller than the second temperature threshold value, forbidding the double-cylinder compressor to be started.
Further, judging whether to start the double-cylinder compressor and determining the working mode of the double-cylinder compressor after the double-cylinder compressor is started according to the running mode of the air conditioner and the temperature detection value, and the method comprises the following steps: when the operation mode of the air conditioner is a refrigeration mode and the temperature detection value is in an ascending trend, judging whether the temperature detection value is larger than the sum of a second temperature threshold value and a second difference value and smaller than or equal to the sum of a first temperature threshold value and a first difference value, wherein the first difference value and the second difference value are larger than or equal to zero; if the temperature detection value is smaller than the sum of the second temperature threshold value and the second difference value, the double-cylinder compressor is forbidden to be started; if the temperature detection value is greater than the sum of the second temperature threshold value and the second difference value and less than or equal to the sum of the first temperature threshold value and the first difference value, the double-cylinder compressor is allowed to start to operate in the single-cylinder working mode; and if the temperature detection value is greater than the sum of the first temperature threshold value and the first difference value, allowing the double-cylinder compressor to start to operate in the double-cylinder working mode.
Specifically, the method for judging whether to start the dual-cylinder compressor and determining the working mode of the dual-cylinder compressor after the dual-cylinder compressor is started according to the running mode of the air conditioner and the temperature detection value comprises the following steps: when the operation mode of the air conditioner is a heating mode and the temperature detection value is in an ascending trend, judging whether the temperature detection value is larger than a third temperature threshold value and smaller than or equal to a fourth temperature threshold value, wherein the third temperature threshold value is smaller than the fourth temperature threshold value; if the temperature detection value is less than or equal to the third temperature threshold value, the double-cylinder compressor is allowed to start to operate in the double-cylinder working mode; if the temperature detection value is greater than the third temperature threshold value and less than or equal to the fourth temperature threshold value, allowing the double-cylinder compressor to start to operate in the single-cylinder working mode; and if the temperature detection value is greater than the fourth temperature threshold value, forbidding the double-cylinder compressor to be started.
Further, judging whether to start the double-cylinder compressor and determining the working mode of the double-cylinder compressor after the double-cylinder compressor is started according to the running mode of the air conditioner and the temperature detection value, and the method comprises the following steps: when the operation mode of the air conditioner is a heating mode and the temperature detection value is in a descending trend, judging whether the temperature detection value is smaller than the difference between a fourth temperature threshold value and a fourth difference value and larger than or equal to the difference between a third temperature threshold value and a third difference value, wherein the third difference value and the fourth difference value are larger than or equal to zero; if the temperature detection value is larger than or equal to the difference between the fourth temperature threshold value and the fourth difference value, the double-cylinder compressor is prohibited to be started; if the temperature detection value is smaller than the difference between the fourth temperature threshold value and the fourth difference value and is larger than or equal to the difference between the third temperature threshold value and the third difference value, the double-cylinder compressor is allowed to start to operate in the single-cylinder working mode; and if the temperature detection value is smaller than the difference between the third temperature threshold value and the third difference value, the double-cylinder compressor is allowed to start to run in the double-cylinder working mode.
In order to achieve the above object, a second aspect of the present invention provides a control device for a dual cylinder compressor in an air conditioner, the device comprising: the acquisition module is used for acquiring the operation mode of the air conditioner; the detection module is used for detecting the temperature of an indoor heat exchanger in the air conditioner in real time to obtain a temperature detection value; and the control module is used for judging whether to start the double-cylinder compressor or not according to the running mode of the air conditioner and the temperature detection value and determining the working mode of the double-cylinder compressor after the double-cylinder compressor is started, wherein the working mode of the double-cylinder compressor after the double-cylinder compressor is started comprises a single-cylinder working mode and a double-cylinder working mode.
According to the control device of the double-cylinder compressor in the air conditioner, the operation mode of the air conditioner is obtained through the obtaining module, the temperature of the indoor heat exchanger in the air conditioner is detected through the detecting module, and then the control module judges whether the double-cylinder compressor is started or not and determines the working mode of the double-cylinder compressor after the double-cylinder compressor is started according to the operation mode of the air conditioner and the temperature of the indoor heat exchanger, so that the temperature of wind blown out by the air conditioner can be effectively controlled, the comfort of a user using the air conditioner is improved, the air conditioner can be protected from being damaged, and the safe and reliable operation of the air conditioner is effectively guaranteed.
In addition, the control device for the two-cylinder compressor in the air conditioner according to the above embodiment of the present invention may further have the following additional technical features:
specifically, the control module is configured to: when the operation mode of the air conditioner is a refrigeration mode and the temperature detection value is in a descending trend, judging whether the temperature detection value is smaller than a first temperature threshold value and larger than or equal to a second temperature threshold value, when the temperature detection value is larger than or equal to the first temperature threshold value, allowing the double-cylinder compressor to start and operate in the double-cylinder operation mode, when the temperature detection value is smaller than the first temperature threshold value and larger than or equal to the second temperature threshold value, allowing the double-cylinder compressor to start and operate in the single-cylinder operation mode, and when the temperature detection value is smaller than the second temperature threshold value, forbidding the double-cylinder compressor to start, wherein the first temperature threshold value is larger than the second temperature threshold value.
Further, the control module is configured to: when the operation mode of the air conditioner is a cooling mode and the temperature detection value is in an ascending trend, judging whether the temperature detection value is larger than the sum of the second temperature threshold value and the second difference value and smaller than or equal to the sum of the first temperature threshold value and the first difference value, forbidding the double-cylinder compressor to be started when the temperature detection value is smaller than the sum of the second temperature threshold value and the second difference value, and when the temperature detection value is greater than the sum of the second temperature threshold value and the second difference value and less than or equal to the sum of the first temperature threshold value and the first difference value, the double-cylinder compressor is allowed to start to operate in the single-cylinder working mode, and when the temperature detection value is greater than the sum of the first temperature threshold value and the first difference value, allowing the double-cylinder compressor to start and operate in the double-cylinder working mode, wherein the first difference value and the second difference value are both greater than or equal to zero.
Specifically, the control module is configured to: when the operation mode of the air conditioner is a heating mode and the temperature detection value is in a rising trend, judging whether the temperature detection value is larger than a third temperature threshold value and smaller than or equal to a fourth temperature threshold value, when the temperature detection value is smaller than or equal to the third temperature threshold value, allowing the double-cylinder compressor to start and operate in the double-cylinder operation mode, when the temperature detection value is larger than the third temperature threshold value and smaller than or equal to the fourth temperature threshold value, allowing the double-cylinder compressor to start and operate in the single-cylinder operation mode, and when the temperature detection value is larger than the fourth temperature threshold value, forbidding the double-cylinder compressor to start, wherein the third temperature threshold value is smaller than the fourth temperature threshold value.
Further, the control module is configured to: when the operation mode of the air conditioner is a heating mode and the temperature detection value is in a descending trend, judging whether the temperature detection value is smaller than the difference between the fourth temperature threshold value and the fourth difference value and is larger than or equal to the difference between the third temperature threshold value and the third difference value, when the temperature detection value is larger than or equal to the difference between the fourth temperature threshold value and the fourth difference value, the double-cylinder compressor is prohibited to be started, and when the temperature detection value is smaller than the difference between the fourth temperature threshold value and the fourth difference value and is larger than or equal to the difference between the third temperature threshold value and the third difference value, the double-cylinder compressor is allowed to start to operate in the single-cylinder working mode, and when the temperature detection value is smaller than the difference between the third temperature threshold value and a third difference value, allowing the double-cylinder compressor to start and operate in the double-cylinder working mode, wherein the third difference value and the fourth difference value are both larger than or equal to zero.
In order to achieve the above object, an embodiment of the third aspect of the present invention provides an air conditioner, which includes a control device for a two-cylinder compressor in the air conditioner according to the embodiment of the second aspect of the present invention.
According to the air conditioner provided by the embodiment of the invention, the temperature of blown air can be effectively controlled, the comfort of a user is improved, and the air conditioner can be operated safely and reliably.
Drawings
Fig. 1 is a flowchart illustrating a method for controlling a dual cylinder compressor in an air conditioner according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the relationship between the temperature of the indoor heat exchanger and the operating condition of the twin-cylinder compressor according to one embodiment of the present invention;
FIG. 3 is a schematic diagram of the relationship between the temperature of an indoor heat exchanger and the operating state of a dual cylinder compressor according to another embodiment of the present invention;
fig. 4 is a block diagram illustrating a control apparatus of a dual cylinder compressor in an air conditioner according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The air conditioner and the control method and device of the double-cylinder compressor thereof according to the embodiments of the present invention are described below with reference to the accompanying drawings.
Fig. 1 is a flowchart illustrating a method for controlling a dual cylinder compressor in an air conditioner according to an embodiment of the present invention.
As shown in fig. 1, the method for controlling a dual-cylinder compressor in an air conditioner according to an embodiment of the present invention includes the following steps:
and S1, acquiring the operation mode of the air conditioner.
The operation mode of the air conditioner comprises a heating mode and a cooling mode.
And S2, detecting the temperature of the indoor heat exchanger in the air conditioner in real time to obtain a temperature detection value.
In one embodiment of the present invention, the temperature of the indoor heat exchanger in the air conditioner may be collected by the temperature sensor every preset time (e.g., 200ms) to obtain a temperature detection value.
And S3, judging whether to start the double-cylinder compressor or not according to the running mode of the air conditioner and the temperature detection value and determining the working mode of the double-cylinder compressor after the double-cylinder compressor is started, wherein the working mode of the double-cylinder compressor after the double-cylinder compressor is started comprises a single-cylinder working mode and a double-cylinder working mode.
In one embodiment of the present invention, a two-cylinder compressor may include a first cylinder and a second cylinder. When the working mode of the double-cylinder compressor is the double-cylinder working mode, the first cylinder and the second cylinder are both opened, and when the working mode of the double-cylinder compressor is the single-cylinder working mode, the first cylinder is opened and the second cylinder is closed.
In one embodiment of the present invention, a change trend of the temperature detection value may also be judged. Specifically, the temperatures of the indoor heat exchangers acquired twice in the adjacent direction can be compared, if the temperature of the indoor heat exchanger acquired at present is higher than the temperature of the indoor heat exchanger acquired at the last time, it can be determined that the temperature detection value is in an ascending trend, and if the temperature of the indoor heat exchanger acquired at present is lower than the temperature of the indoor heat exchanger acquired at the last time, it can be determined that the temperature detection value is in a descending trend.
In an embodiment of the invention, when the operation mode of the air conditioner is the cooling mode and the temperature detection value is in a downward trend, it can be determined whether the temperature detection value is smaller than a first temperature threshold value a and greater than or equal to a second temperature threshold value B, wherein the first temperature threshold value a is greater than the second temperature threshold value B.
If the temperature detection value is greater than or equal to the first temperature threshold value A, the temperature of the indoor heat exchanger is in a relatively normal state, and the double-cylinder compressor can be allowed to start and operate in a double-cylinder working mode so as to ensure that the air conditioner performs normal refrigeration; if the temperature detection value is smaller than the first temperature threshold value A and larger than or equal to the second temperature threshold value B, the temperature of the indoor heat exchanger is lower, and the double-cylinder compressor can be allowed to start and operate in a single-cylinder working mode, so that the refrigeration operation of the air conditioner can be ensured, and the blown air can be prevented from being overcooled; if the temperature detection value is smaller than the second temperature threshold value B, the temperature of the indoor heat exchanger is too low, and the double-cylinder compressor can be forbidden to be started to prevent the damage of the air conditioner.
That is, as shown in fig. 2, when the operation mode of the air conditioner is the cooling mode and the temperature detection value is in a downward trend, the first temperature threshold a may be used as a critical condition for determining that the dual-cylinder compressor is operated in the single-cylinder operation mode or the dual-cylinder operation mode, and the second temperature threshold B may be used as a critical condition for determining whether to allow the dual-cylinder compressor to be turned on.
Further, when the operation mode of the air conditioner is the cooling mode and the temperature detection value is in an ascending trend, it can be determined whether the temperature detection value is greater than a sum B + D of a second temperature threshold and a second difference and is less than or equal to a sum a + C of a first temperature threshold and a first difference, wherein both the first difference C and the second difference D are greater than or equal to zero.
If the temperature detection value is smaller than the sum B + D of the second temperature threshold value and the second difference value, the temperature of the indoor heat exchanger is still too low, and the double-cylinder compressor can be forbidden to be started; if the temperature detection value is greater than the sum B + D of the second temperature threshold value and the second difference value and less than or equal to the sum A + C of the first temperature threshold value and the first difference value, the temperature of the indoor heat exchanger rises back to some extent, and the double-cylinder compressor can be allowed to start to operate in a single-cylinder working mode; if the temperature detection value is greater than the sum A + C of the first temperature threshold value and the first difference value, the temperature of the indoor heat exchanger is increased to a relatively normal state, and the double-cylinder compressor can be allowed to start to operate in a double-cylinder working mode.
That is, as shown in fig. 2, when the operation mode of the air conditioner is the cooling mode and the temperature detection value is in an upward trend, the sum a + C of the first temperature threshold and the first difference may be used as a critical condition for determining whether the dual-cylinder compressor is started in the single-cylinder operation mode or the dual-cylinder operation mode, and the sum B + D of the second temperature threshold and the second difference may be used as a critical condition for determining whether the dual-cylinder compressor is allowed to be started. The first difference C and the second difference D are such that the critical condition when the temperature detection value is in an upward trend and the critical condition when the temperature detection value is in a downward trend change slightly, while in the changed condition, the sum B + D of the second temperature threshold value and the second difference is still smaller than the sum a + C of the first temperature threshold value and the first difference.
In one embodiment of the present invention, when the operation mode of the air conditioner is the heating mode and the temperature detection value is in an upward trend, it may be determined whether the temperature detection value is greater than a third temperature threshold B0 and equal to or less than a fourth temperature threshold a0, wherein the third temperature threshold B0 is less than the fourth temperature threshold a 0.
If the temperature detection value is less than or equal to a third temperature threshold value B0, the temperature of the indoor heat exchanger is in a relatively normal state, and the double-cylinder compressor can be allowed to start and run in a double-cylinder working mode; if the temperature detection value is greater than a third temperature threshold value B0 and less than or equal to a fourth temperature threshold value A0, the temperature of the indoor heat exchanger is higher, and the double-cylinder compressor can be allowed to start and operate in a single-cylinder working mode, so that the heating operation of the air conditioner can be ensured, and the blown air can be prevented from being overheated; if the temperature detection value is larger than the fourth temperature threshold value, the temperature of the indoor heat exchanger is too high, and the double-cylinder compressor can be forbidden to be started to prevent the damage of the air conditioner.
That is, as shown in fig. 3, when the operation mode of the air conditioner is the heating mode and the temperature detection value is in an upward trend, the third temperature threshold B0 may be used as a critical condition for determining whether the dual cylinder compressor is operated in the single cylinder operation mode or the dual cylinder operation mode, and the fourth temperature threshold a0 may be used as a critical condition for determining whether the dual cylinder compressor is allowed to be turned on.
Further, when the operation mode of the air conditioner is the heating mode and the temperature detection value is in a downward trend, it can be determined whether the temperature detection value is smaller than a difference a0-C0 between the fourth temperature threshold and the fourth difference and is greater than or equal to a difference B0-D0 between the third temperature threshold and the third difference, wherein the third difference D0 and the fourth difference C0 are both greater than or equal to zero.
If the temperature detection value is larger than or equal to the difference A0-C0 between the fourth temperature threshold value and the fourth difference value, the temperature of the indoor heat exchanger is still too high, and the double-cylinder compressor can be prohibited to be started; if the temperature detection value is smaller than the difference A0-C0 between the fourth temperature threshold value and the fourth difference value and is larger than or equal to the difference B0-D0 between the third temperature threshold value and the third difference value, the temperature of the indoor heat exchanger is reduced, and the double-cylinder compressor can be allowed to start to operate in a single-cylinder working mode; if the temperature detection value is smaller than the difference B0-D0 between the third temperature threshold value and the third difference value, the temperature of the indoor heat exchanger is reduced to a relatively normal state, and the double-cylinder compressor can be allowed to start to operate in a double-cylinder working mode.
That is, as shown in fig. 3, when the operation mode of the air conditioner is the heating mode and the temperature detection value is in a downward trend, the difference B0-D0 between the third temperature threshold and the third difference can be used as a critical condition for determining whether the dual-cylinder compressor is turned on in the single-cylinder operation mode or the dual-cylinder operation mode, and the difference a0-C0 between the fourth temperature threshold and the fourth difference can be used as a critical condition for determining whether the dual-cylinder compressor is allowed to be turned on. The third difference D0 and the fourth difference C0 cause the critical condition when the temperature detection value is in a downward trend and the critical condition when the temperature detection value is in an upward trend to change slightly, while in the changed conditions, the differences B0-D0 between the third temperature threshold and the third difference are smaller than the differences A0-C0 between the fourth temperature threshold and the fourth difference.
It should be noted that the first to fourth temperature thresholds and the first to fourth difference values may be set according to the actual influence of the temperature of the indoor heat exchanger on the operation of the two-cylinder compressor.
In addition, in one embodiment of the present invention, a display screen may be further provided on the control panel or the remote controller of the air conditioner in order to display the operation state of the air conditioner, fault information, or the like. For example, when the operation mode of the air conditioner is the cooling mode and the temperature detection value is in a descending trend, if the temperature detection value is smaller than the second temperature threshold value B, the user can be reminded through the display screen that the temperature of the current indoor heat exchanger is too low and the condition for starting the double-cylinder compressor is not met.
According to the control method of the double-cylinder compressor in the air conditioner, the operation mode of the air conditioner is obtained, the temperature of the indoor heat exchanger in the air conditioner is detected, whether the double-cylinder compressor is started or not is judged according to the operation mode of the air conditioner and the temperature of the indoor heat exchanger, and the working mode after the double-cylinder compressor is started is determined, so that the temperature of air blown out by the air conditioner can be effectively controlled, the comfort of a user using the air conditioner is improved, the air conditioner can be protected from being damaged, and the safe and reliable operation of the air conditioner is effectively guaranteed.
In order to realize the control method of the double-cylinder compressor in the air conditioner, the invention also provides a control device of the double-cylinder compressor in the air conditioner.
As shown in fig. 4, the control device of the dual cylinder compressor in the air conditioner according to the embodiment of the present invention includes: an acquisition module 10, a detection module 20 and a control module 30.
The obtaining module 10 is configured to obtain an operation mode of the air conditioner; the detection module 20 is used for detecting the temperature of an indoor heat exchanger in the air conditioner in real time to obtain a temperature detection value; the control module 30 is configured to determine whether to start the dual-cylinder compressor and determine a working mode after the dual-cylinder compressor is started according to the operating mode and the temperature detection value of the air conditioner, where the working mode after the dual-cylinder compressor is started includes a single-cylinder working mode and a dual-cylinder working mode.
The operation mode of the air conditioner comprises a heating mode and a cooling mode.
In one embodiment of the present invention, the detection module 20 may include a temperature sensor, and the detection module 20 may collect the temperature of an indoor heat exchanger of the air conditioner at preset time intervals (e.g., 200ms) to obtain a temperature detection value.
In one embodiment of the present invention, a two-cylinder compressor may include a first cylinder and a second cylinder. When the working mode of the double-cylinder compressor is the double-cylinder working mode, the first cylinder and the second cylinder are both opened, and when the working mode of the double-cylinder compressor is the single-cylinder working mode, the first cylinder is opened and the second cylinder is closed.
In one embodiment of the invention, the control module 30 may determine a trend of the change in the temperature detection value. Specifically, the temperatures of the indoor heat exchangers acquired twice in the adjacent direction can be compared, if the temperature of the indoor heat exchanger acquired at present is higher than the temperature of the indoor heat exchanger acquired at the last time, it can be determined that the temperature detection value is in an ascending trend, and if the temperature of the indoor heat exchanger acquired at present is lower than the temperature of the indoor heat exchanger acquired at the last time, it can be determined that the temperature detection value is in a descending trend.
In an embodiment of the present invention, when the operation mode of the air conditioner is the cooling mode and the temperature detection value is in a downward trend, the control module 30 may determine whether the temperature detection value is smaller than a first temperature threshold a and greater than or equal to a second temperature threshold B, where the first temperature threshold a is greater than the second temperature threshold B.
If the temperature detection value is greater than or equal to the first temperature threshold value A, the temperature of the indoor heat exchanger is in a relatively normal state, and the control module 30 can allow the double-cylinder compressor to start and operate in a double-cylinder working mode so as to ensure that the air conditioner performs normal refrigeration; if the temperature detection value is smaller than the first temperature threshold value A and greater than or equal to the second temperature threshold value B, the temperature of the indoor heat exchanger is lower, and the control module 30 can allow the double-cylinder compressor to be started and operated in a single-cylinder working mode, so that the refrigeration operation of the air conditioner can be ensured, and the blown air can be prevented from being overcooled; if the temperature detection value is less than the second temperature threshold B, the temperature of the indoor heat exchanger is too low, and the control module 30 may prohibit the dual cylinder compressor from being turned on to prevent damage to the air conditioner.
That is, as shown in fig. 2, when the operation mode of the air conditioner is the cooling mode and the temperature detection value is in a downward trend, the first temperature threshold a may be used as a critical condition for determining that the dual-cylinder compressor is operated in the single-cylinder operation mode or the dual-cylinder operation mode, and the second temperature threshold B may be used as a critical condition for determining whether to allow the dual-cylinder compressor to be turned on.
Further, when the operation mode of the air conditioner is the cooling mode and the temperature detection value is in an upward trend, the control module 30 may determine whether the temperature detection value is greater than a sum B + D of the second temperature threshold and the second difference and is less than or equal to a sum a + C of the first temperature threshold and the first difference, where both the first difference C and the second difference D are greater than or equal to zero.
If the temperature detection value is smaller than the sum B + D of the second temperature threshold value and the second difference value, the temperature of the indoor heat exchanger is still too low, and the control module 30 can prohibit the double-cylinder compressor from being started; if the temperature detection value is greater than the sum B + D of the second temperature threshold value and the second difference value and less than or equal to the sum A + C of the first temperature threshold value and the first difference value, the temperature of the indoor heat exchanger rises back, and the control module 30 can allow the double-cylinder compressor to be started and operated in a single-cylinder working mode; if the temperature detection value is greater than the sum of the first temperature threshold and the first difference value, a + C, the temperature of the indoor heat exchanger is increased to a relatively normal state, and the control module 30 may allow the dual-cylinder compressor to start to operate in the dual-cylinder operation mode.
That is, as shown in fig. 2, when the operation mode of the air conditioner is the cooling mode and the temperature detection value is in an upward trend, the sum a + C of the first temperature threshold and the first difference may be used as a critical condition for determining whether the dual-cylinder compressor is started in the single-cylinder operation mode or the dual-cylinder operation mode, and the sum B + D of the second temperature threshold and the second difference may be used as a critical condition for determining whether the dual-cylinder compressor is allowed to be started. The first difference C and the second difference D are such that the critical condition when the temperature detection value is in an upward trend and the critical condition when the temperature detection value is in a downward trend change slightly, while in the changed condition, the sum B + D of the second temperature threshold value and the second difference is still smaller than the sum a + C of the first temperature threshold value and the first difference.
In one embodiment of the present invention, when the operation mode of the air conditioner is the heating mode and the temperature detection value is in an upward trend, the control module 30 may determine whether the temperature detection value is greater than a third temperature threshold B0 and equal to or less than a fourth temperature threshold a0, wherein the third temperature threshold B0 is less than the fourth temperature threshold a 0.
If the temperature detection value is less than or equal to the third temperature threshold value B0, the temperature of the indoor heat exchanger is in a relatively normal state, and the control module 30 can allow the double-cylinder compressor to start to operate in a double-cylinder working mode; if the temperature detection value is greater than the third temperature threshold value B0 and less than or equal to the fourth temperature threshold value A0, the temperature of the indoor heat exchanger is higher, and the control module 30 can allow the double-cylinder compressor to be started and operated in a single-cylinder working mode, so that the heating operation of the air conditioner can be ensured, and the blown air can be prevented from being overheated; if the temperature detection value is greater than the fourth temperature threshold value, the temperature of the indoor heat exchanger is too high, and the control module 30 may prohibit the dual cylinder compressor from being turned on to prevent damage to the air conditioner.
That is, as shown in fig. 3, when the operation mode of the air conditioner is the heating mode and the temperature detection value is in an upward trend, the third temperature threshold B0 may be used as a critical condition for determining whether the dual cylinder compressor is operated in the single cylinder operation mode or the dual cylinder operation mode, and the fourth temperature threshold a0 may be used as a critical condition for determining whether the dual cylinder compressor is allowed to be turned on.
Further, when the operation mode of the air conditioner is the heating mode and the temperature detection value is in a downward trend, the control module 30 may determine whether the temperature detection value is smaller than a difference a0-C0 between the fourth temperature threshold and the fourth difference and greater than or equal to a difference B0-D0 between the third temperature threshold and the third difference, where both the third difference D0 and the fourth difference C0 are greater than or equal to zero.
If the temperature detection value is greater than or equal to the difference A0-C0 between the fourth temperature threshold value and the fourth difference value, the temperature of the indoor heat exchanger is still too high, and the control module 30 can prohibit the double-cylinder compressor from being started; if the temperature detection value is smaller than the difference A0-C0 between the fourth temperature threshold value and the fourth difference value and is larger than or equal to the difference B0-D0 between the third temperature threshold value and the third difference value, the temperature of the indoor heat exchanger is reduced, and the control module 30 can allow the double-cylinder compressor to start to operate in a single-cylinder working mode; if the temperature detection value is less than the difference between the third temperature threshold and the third difference value B0-D0, the temperature of the indoor heat exchanger is reduced to a relatively normal state, and the control module 30 may allow the dual cylinder compressor to start to operate in the dual cylinder operating mode.
That is, as shown in fig. 3, when the operation mode of the air conditioner is the heating mode and the temperature detection value is in a downward trend, the difference B0-D0 between the third temperature threshold and the third difference can be used as a critical condition for determining whether the dual-cylinder compressor is turned on in the single-cylinder operation mode or the dual-cylinder operation mode, and the difference a0-C0 between the fourth temperature threshold and the fourth difference can be used as a critical condition for determining whether the dual-cylinder compressor is allowed to be turned on. The third difference D0 and the fourth difference C0 cause the critical condition when the temperature detection value is in a downward trend and the critical condition when the temperature detection value is in an upward trend to change slightly, while in the changed conditions, the differences B0-D0 between the third temperature threshold and the third difference are smaller than the differences A0-C0 between the fourth temperature threshold and the fourth difference.
It should be noted that the first to fourth temperature thresholds and the first to fourth difference values may be set according to the actual influence of the temperature of the indoor heat exchanger on the operation of the two-cylinder compressor.
In addition, in one embodiment of the present invention, a display screen may be further provided on the control panel or the remote controller of the air conditioner in order to display the operation state of the air conditioner, fault information, or the like. For example, when the operation mode of the air conditioner is the cooling mode and the temperature detection value is in a descending trend, if the temperature detection value is smaller than the second temperature threshold value B, the user can be reminded through the display screen that the temperature of the current indoor heat exchanger is too low and the condition for starting the double-cylinder compressor is not met.
According to the control device of the double-cylinder compressor in the air conditioner, the operation mode of the air conditioner is obtained through the obtaining module, the temperature of the indoor heat exchanger in the air conditioner is detected through the detecting module, and then the control module judges whether the double-cylinder compressor is started or not and determines the working mode of the double-cylinder compressor after the double-cylinder compressor is started according to the operation mode of the air conditioner and the temperature of the indoor heat exchanger, so that the temperature of wind blown out by the air conditioner can be effectively controlled, the comfort of a user using the air conditioner is improved, the air conditioner can be protected from being damaged, and the safe and reliable operation of the air conditioner is effectively guaranteed.
The invention further provides an air conditioner corresponding to the embodiment.
The air conditioner according to the embodiment of the present invention includes the control device for the dual-cylinder compressor in the air conditioner according to the above embodiment of the present invention, and the specific implementation manner of the air conditioner may refer to the above embodiment.
According to the air conditioner provided by the embodiment of the invention, the temperature of blown air can be effectively controlled, the comfort of a user is improved, and the air conditioner can be operated safely and reliably.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. 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 present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean 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 are not necessarily intended to 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. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (9)
1. A control method of a double-cylinder compressor in an air conditioner is characterized by comprising the following steps:
acquiring an operation mode of the air conditioner;
detecting the temperature of an indoor heat exchanger in the air conditioner in real time to obtain a temperature detection value;
judging whether to start the double-cylinder compressor and determining the working mode of the double-cylinder compressor after the double-cylinder compressor is started according to the running mode of the air conditioner and the temperature detection value, wherein the working mode of the double-cylinder compressor after the double-cylinder compressor is started comprises a single-cylinder working mode and a double-cylinder working mode, and the judging whether to start the double-cylinder compressor and the determining of the working mode of the double-cylinder compressor after the double-cylinder compressor is started according to the running mode of the air conditioner and the temperature detection value comprises the following steps: when the operation mode of the air conditioner is a refrigeration mode and the temperature detection value is in a descending trend, judging whether the temperature detection value is smaller than a first temperature threshold value and larger than or equal to a second temperature threshold value, wherein the first temperature threshold value is larger than the second temperature threshold value; if the temperature detection value is larger than or equal to the first temperature threshold value, the double-cylinder compressor is allowed to start to operate in the double-cylinder working mode; if the temperature detection value is smaller than the first temperature threshold value and larger than or equal to the second temperature threshold value, the double-cylinder compressor is allowed to start to operate in the single-cylinder working mode; and if the temperature detection value is smaller than the second temperature threshold value, forbidding the double-cylinder compressor to be started.
2. The method for controlling the twin-cylinder compressor in the air conditioner according to claim 1, wherein the judging whether to turn on the twin-cylinder compressor and the determining of the operation mode after the twin-cylinder compressor is turned on according to the operation mode of the air conditioner and the temperature detection value comprises:
when the operation mode of the air conditioner is a refrigeration mode and the temperature detection value is in an ascending trend, judging whether the temperature detection value is larger than the sum of a second temperature threshold value and a second difference value and smaller than or equal to the sum of a first temperature threshold value and a first difference value, wherein the first difference value and the second difference value are larger than or equal to zero;
if the temperature detection value is smaller than the sum of the second temperature threshold value and the second difference value, the double-cylinder compressor is forbidden to be started;
if the temperature detection value is greater than the sum of the second temperature threshold value and the second difference value and less than or equal to the sum of the first temperature threshold value and the first difference value, the double-cylinder compressor is allowed to start to operate in the single-cylinder working mode;
and if the temperature detection value is greater than the sum of the first temperature threshold value and the first difference value, allowing the double-cylinder compressor to start to operate in the double-cylinder working mode.
3. The method for controlling the twin-cylinder compressor in the air conditioner according to claim 1, wherein the judging whether to turn on the twin-cylinder compressor and the determining of the operation mode after the twin-cylinder compressor is turned on according to the operation mode of the air conditioner and the temperature detection value comprises:
when the operation mode of the air conditioner is a heating mode and the temperature detection value is in an ascending trend, judging whether the temperature detection value is larger than a third temperature threshold value and smaller than or equal to a fourth temperature threshold value, wherein the third temperature threshold value is smaller than the fourth temperature threshold value;
if the temperature detection value is less than or equal to the third temperature threshold value, the double-cylinder compressor is allowed to start to operate in the double-cylinder working mode;
if the temperature detection value is greater than the third temperature threshold value and less than or equal to the fourth temperature threshold value, allowing the double-cylinder compressor to start to operate in the single-cylinder working mode;
and if the temperature detection value is greater than the fourth temperature threshold value, forbidding the double-cylinder compressor to be started.
4. The method for controlling the twin-cylinder compressor in the air conditioner according to claim 3, wherein the judging whether to turn on the twin-cylinder compressor and the determining the operation mode after the twin-cylinder compressor is turned on according to the operation mode of the air conditioner and the temperature detection value comprises:
when the operation mode of the air conditioner is a heating mode and the temperature detection value is in a descending trend, judging whether the temperature detection value is smaller than the difference between a fourth temperature threshold value and a fourth difference value and larger than or equal to the difference between a third temperature threshold value and a third difference value, wherein the third difference value and the fourth difference value are larger than or equal to zero;
if the temperature detection value is larger than or equal to the difference between the fourth temperature threshold value and the fourth difference value, the double-cylinder compressor is prohibited to be started;
if the temperature detection value is smaller than the difference between the fourth temperature threshold value and the fourth difference value and is larger than or equal to the difference between the third temperature threshold value and the third difference value, the double-cylinder compressor is allowed to start to operate in the single-cylinder working mode;
and if the temperature detection value is smaller than the difference between the third temperature threshold value and the third difference value, allowing the double-cylinder compressor to start to operate in the double-cylinder working mode.
5. A control device of a double-cylinder compressor in an air conditioner is characterized by comprising:
the acquisition module is used for acquiring the operation mode of the air conditioner;
the detection module is used for detecting the temperature of an indoor heat exchanger in the air conditioner in real time to obtain a temperature detection value;
the control module is used for judging whether to start the double-cylinder compressor or not and determining the working mode of the double-cylinder compressor after the double-cylinder compressor is started according to the running mode of the air conditioner and the temperature detection value, wherein the working mode of the double-cylinder compressor after the double-cylinder compressor is started comprises a single-cylinder working mode and a double-cylinder working mode, and the control module is specifically used for: when the operation mode of the air conditioner is a refrigeration mode and the temperature detection value is in a descending trend, judging whether the temperature detection value is smaller than a first temperature threshold value and larger than or equal to a second temperature threshold value, when the temperature detection value is larger than or equal to the first temperature threshold value, allowing the double-cylinder compressor to start and operate in the double-cylinder operation mode, when the temperature detection value is smaller than the first temperature threshold value and larger than or equal to the second temperature threshold value, allowing the double-cylinder compressor to start and operate in the single-cylinder operation mode, and when the temperature detection value is smaller than the second temperature threshold value, forbidding the double-cylinder compressor to start, wherein the first temperature threshold value is larger than the second temperature threshold value.
6. The control device of the double-cylinder compressor in the air conditioner as claimed in claim 5, wherein the control module is used for:
when the operation mode of the air conditioner is a cooling mode and the temperature detection value is in an ascending trend, judging whether the temperature detection value is larger than the sum of the second temperature threshold value and the second difference value and smaller than or equal to the sum of the first temperature threshold value and the first difference value, forbidding the double-cylinder compressor to be started when the temperature detection value is smaller than the sum of the second temperature threshold value and the second difference value, and when the temperature detection value is greater than the sum of the second temperature threshold value and the second difference value and less than or equal to the sum of the first temperature threshold value and the first difference value, the double-cylinder compressor is allowed to start to operate in the single-cylinder working mode, and when the temperature detection value is greater than the sum of the first temperature threshold value and the first difference value, allowing the double-cylinder compressor to start and operate in the double-cylinder working mode, wherein the first difference value and the second difference value are both greater than or equal to zero.
7. The control device of the double-cylinder compressor in the air conditioner as claimed in claim 5, wherein the control module is used for:
when the operation mode of the air conditioner is a heating mode and the temperature detection value is in a rising trend, judging whether the temperature detection value is larger than a third temperature threshold value and smaller than or equal to a fourth temperature threshold value, when the temperature detection value is smaller than or equal to the third temperature threshold value, allowing the double-cylinder compressor to start and operate in the double-cylinder operation mode, when the temperature detection value is larger than the third temperature threshold value and smaller than or equal to the fourth temperature threshold value, allowing the double-cylinder compressor to start and operate in the single-cylinder operation mode, and when the temperature detection value is larger than the fourth temperature threshold value, forbidding the double-cylinder compressor to start, wherein the third temperature threshold value is smaller than the fourth temperature threshold value.
8. The control device of the double-cylinder compressor in the air conditioner as claimed in claim 7, wherein the control module is used for:
when the operation mode of the air conditioner is a heating mode and the temperature detection value is in a descending trend, judging whether the temperature detection value is smaller than the difference between the fourth temperature threshold value and the fourth difference value and is larger than or equal to the difference between the third temperature threshold value and the third difference value, when the temperature detection value is larger than or equal to the difference between the fourth temperature threshold value and the fourth difference value, the double-cylinder compressor is prohibited to be started, and when the temperature detection value is smaller than the difference between the fourth temperature threshold value and the fourth difference value and is larger than or equal to the difference between the third temperature threshold value and the third difference value, the double-cylinder compressor is allowed to start to operate in the single-cylinder working mode, and when the temperature detection value is smaller than the difference between the third temperature threshold value and the third difference value, allowing the double-cylinder compressor to start and operate in the double-cylinder working mode, wherein the third difference value and the fourth difference value are both larger than or equal to zero.
9. An air conditioner characterized by comprising the control device of the twin cylinder compressor in the air conditioner according to any one of claims 5 to 8.
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