CN112432339A - Method and device for adjusting electronic expansion valve of air conditioner outdoor unit and air conditioner outdoor unit - Google Patents
Method and device for adjusting electronic expansion valve of air conditioner outdoor unit and air conditioner outdoor unit Download PDFInfo
- Publication number
- CN112432339A CN112432339A CN202011172171.4A CN202011172171A CN112432339A CN 112432339 A CN112432339 A CN 112432339A CN 202011172171 A CN202011172171 A CN 202011172171A CN 112432339 A CN112432339 A CN 112432339A
- Authority
- CN
- China
- Prior art keywords
- expansion valve
- electronic expansion
- speed
- temperature
- adjusting
- 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.)
- Granted
Links
Images
Classifications
-
- 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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
-
- 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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
-
- 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
- F24F11/64—Electronic processing using pre-stored data
Abstract
The application relates to the technical field of intelligent air conditioners, and discloses a method for adjusting an electronic expansion valve of an air conditioner outdoor unit, wherein the electronic expansion valve is arranged at a main outlet of a condenser and comprises the following steps: detecting the actual exhaust temperature of the compressor; detecting the temperature change time of the compressor exhaust temperature under the condition that the absolute value of the difference value between the actual exhaust temperature and the target exhaust temperature of the compressor belongs to a first interval; the temperature change time is the time for the exhaust temperature to change from the current temperature to the adjacent temperature; determining the valve adjusting speed according to the temperature changing time; and adjusting the electronic expansion valve according to the valve adjusting speed. The application can avoid the over-high or over-low adjusting speed of the electronic expansion valve, so that the opening adjustment of the electronic expansion valve is more stable, and the exhaust and power fluctuation of the compressor are avoided to be larger. The application also discloses a device for adjusting the electronic expansion valve of the air conditioner outdoor unit and the air conditioner outdoor unit.
Description
Technical Field
The present disclosure relates to the field of intelligent air conditioners, and in particular, to a method and an apparatus for adjusting an electronic expansion valve of an outdoor unit of an air conditioner, and an outdoor unit of an air conditioner.
Background
At present, an electronic expansion valve is disposed at a total outlet of a condenser of an outdoor unit of an air conditioner, and a flow rate of a refrigerant can be adjusted by adjusting an opening degree of the electronic expansion valve. The electronic expansion valve controls the voltage or current applied to the expansion valve by using the electric signal generated by the regulated parameter, thereby achieving the purpose of regulating the liquid supply amount. In practical applications, after the target opening degree of the electronic expansion valve is determined, the opening degree of the expansion valve is usually adjusted to the target opening degree according to a certain valve adjusting speed. The unit of the valve speed is s/step, and the meaning of the step is that: the process of adjusting the electronic expansion valve from the closed state to the maximum opening state is divided into a plurality of steps, for example, 480 steps, 550 steps, etc., and each step of the electronic expansion valve changes a certain opening degree. The valve speed is adjusted, for example, at 20 s/step, 15 s/step, etc.
In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art: the opening of the electronic expansion valve is adjusted at a fixed valve adjusting speed, so that the electronic expansion valve is adjusted too fast sometimes, and particularly under some working conditions, the valve value is close to the break point of the electronic expansion valve, so that the conditions of exhaust of the compressor and large power fluctuation are easy to occur.
Disclosure of Invention
The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.
The embodiment of the disclosure provides a method and a device for adjusting an electronic expansion valve of an air conditioner outdoor unit and the air conditioner outdoor unit, and aims to solve the problems that the electronic expansion valve of the air conditioner outdoor unit is fixed in valve adjusting speed, so that the air exhausting of a compressor and the power fluctuation are large easily caused.
In some embodiments, a method for adjusting an electronic expansion valve of an outdoor unit of an air conditioner, the electronic expansion valve being disposed at a main outlet of a condenser, the method includes: detecting the actual exhaust temperature of the compressor; detecting the temperature change time of the compressor exhaust temperature under the condition that the absolute value of the difference value between the actual exhaust temperature and the target exhaust temperature of the compressor belongs to a first interval; the temperature change time is the time for the exhaust temperature to change from the current temperature to the adjacent temperature; determining the valve adjusting speed according to the temperature changing time; and adjusting the electronic expansion valve according to the valve adjusting speed.
In some embodiments, an apparatus for adjusting an electronic expansion valve of an outdoor unit of an air conditioner includes a processor and a memory storing program instructions, wherein the processor is configured to execute the method for adjusting the electronic expansion valve of the outdoor unit of the air conditioner according to the foregoing embodiments when executing the program instructions.
In some embodiments, the outdoor unit of the air conditioner includes the device for adjusting the electronic expansion valve of the outdoor unit of the air conditioner as provided in the previous embodiments.
The method and the device for adjusting the electronic expansion valve of the air conditioner outdoor unit and the air conditioner outdoor unit provided by the embodiment of the disclosure can realize the following technical effects:
under the condition that the absolute value of the difference value between the actual exhaust temperature and the target exhaust temperature of the compressor belongs to the first interval, the valve adjusting speed is determined according to the time for the exhaust temperature to change from the current temperature to the adjacent temperature, the over-high or over-low adjusting speed of the electronic expansion valve can be avoided, the opening adjustment of the electronic expansion valve is more stable, and the large exhaust and power fluctuation of the compressor is avoided.
The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:
fig. 1 is a schematic diagram of a method for adjusting an electronic expansion valve of an outdoor unit of an air conditioner according to an embodiment of the present disclosure;
fig. 2 is a schematic diagram of another method for adjusting an electronic expansion valve of an outdoor unit of an air conditioner according to an embodiment of the present disclosure;
fig. 3 is a schematic view illustrating an apparatus for adjusting an electronic expansion valve of an outdoor unit of an air conditioner according to an embodiment of the present disclosure;
fig. 4 is a schematic view illustrating another apparatus for adjusting an electronic expansion valve of an outdoor unit of an air conditioner according to an embodiment of the present disclosure.
Detailed Description
So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.
The terms "first," "second," and the like in the description and in the claims, and the above-described drawings of embodiments of the present disclosure, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the present disclosure described herein may be made. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.
In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the disclosed embodiments and their examples and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation. Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art as appropriate.
In addition, the terms "disposed," "connected," and "secured" are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. Specific meanings of the above terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art according to specific situations. The term "plurality" means two or more unless otherwise specified.
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.
Referring to fig. 1, an embodiment of the present disclosure provides a method for adjusting an electronic expansion valve of an outdoor unit of an air conditioner, where the electronic expansion valve is disposed at a main outlet of a condenser, the method including:
s10, detecting the actual exhaust temperature of the compressor;
s20, detecting the temperature change time of the compressor exhaust temperature under the condition that the absolute value of the difference value between the actual exhaust temperature and the target exhaust temperature of the compressor belongs to a first interval; the temperature change time is the time for the exhaust temperature to change from the current temperature to the adjacent temperature;
s30, determining the valve adjusting speed according to the temperature changing time;
and S40, adjusting the electronic expansion valve according to the valve adjusting speed.
Under the condition that the absolute value of the difference value between the actual exhaust temperature and the target exhaust temperature of the compressor belongs to the first interval, the valve adjusting speed is determined according to the time for the exhaust temperature to change from the current temperature to the adjacent temperature, the over-high or over-low adjusting speed of the electronic expansion valve can be avoided, the opening adjustment of the electronic expansion valve is more stable, the exhaust temperature of the compressor can be stably transited to the target exhaust temperature, and the exhaust and power fluctuation of the compressor is avoided to be larger.
The disclosed embodiment can provide a scheme for determining the valve regulating speed according to the exhaust temperature. Specifically, the actual discharge temperature of the compressor and the preset target discharge temperature can be obtained, and the valve adjusting speed matched with the actual discharge temperature and the preset target discharge temperature can be determined according to the absolute value of the difference value of the actual discharge temperature and the preset target discharge temperature. As an example, the actual discharge temperature of the compressor may be detected by providing a temperature sensor at the discharge port of the compressor.
In the actual process, the interval representing the magnitude of the temperature difference may be divided in advance, for example, three intervals, wherein the minimum value of the first interval is greater than the maximum value of the second interval, and the maximum value of the first interval is less than the minimum value of the third interval.
If the absolute value of the difference value between the actual exhaust temperature and the target exhaust temperature belongs to the third interval, the difference between the actual exhaust temperature and the target exhaust temperature is large, and the large fluctuation of the exhaust and the power of the compressor is not easy to cause. If the absolute value of the difference between the two values belongs to the first interval, the difference between the two values is small, the exhaust temperature of the compressor is sensitive to the change of the speed of the valve, and the exhaust and power fluctuation of the compressor is easily caused by too fast or too slow speed of the valve. If the absolute value of the difference between the two values belongs to a second interval, the temperature difference between the two values is extremely small, the exhaust temperature of the compressor is extremely sensitive to the change of the valve adjusting speed, and the valve adjusting speed is too high or too low, so that the exhaust and power fluctuation of the compressor is extremely large.
Specifically, the actual exhaust temperature of the compressor and the target exhaust temperature may be differentiated, and then the absolute value of the difference may be taken, and the next operation processing may be continued if the absolute value of the difference belongs to the first interval.
The temperature change time can reflect the speed of the change of the exhaust temperature of the compressor, and the longer the temperature change time is, the slower the change of the exhaust temperature of the compressor is indicated, and the shorter the temperature change time is, the faster the change of the exhaust temperature of the compressor is indicated. The temperature change time is adopted to measure the speed of the change of the exhaust temperature of the compressor. In the embodiment of the disclosure, a timing circuit may be disposed in the outdoor unit of the air conditioner, the timing circuit is connected to the temperature sensor at the air outlet of the compressor, and the timing circuit detects the temperature-changing time. The timing circuit receives the temperature value detected by the temperature sensor and performs timing when the exhaust temperature changes from the current temperature to the adjacent temperature.
The adjacent temperature means a temperature adjacent to the exhaust temperature by a preset unit. For example, if the exhaust temperature is 56 ℃, the preset unit is 1, the adjacent temperature is 55 ℃ or 57 ℃; for another example, if the exhaust temperature is 56 ℃ and the predetermined unit is 3, the adjacent temperature is 53 ℃ or 59 ℃.
The valve speed is a speed of adjusting the opening of the electronic expansion valve, and is, for example, 20 s/step, 15 s/step, or the like. In the embodiment of the disclosure, after the valve adjusting speed is determined according to the temperature changing time, the valve adjusting speed may be sent to an adjusting module connected to the electronic expansion valve, and the adjusting module adjusts the electronic expansion valve according to the speed.
Optionally, determining the governing speed according to the temperature change time comprises: and establishing a data comparison table of the temperature changing time and the valve adjusting speed, and obtaining the valve adjusting speed corresponding to the temperature changing time by inquiring the data comparison table. In this way, the trim valve speed may be determined by querying a data look-up table.
Alternatively, the actual exhaust temperature is T and the target exhaust temperature is T0Absolute value of difference is DeltaT1，△T1＝|T0-T |. Optionally, the first interval is (3, 15). At Δ T1Belonging to the first interval, i.e. 3 <. DELTA.T1If < 15, the subsequent processing operation is performed. Through setting up first interval, conveniently judge whether compressor exhaust temperature is more sensitive to the valve speed.
Optionally, determining the governing valve speed according to the temperature change time comprises: and determining the speed of the regulating valve according to the magnitude relation between the temperature changing time and the first time and the second time, wherein the first time is shorter than the second time. The first time and the second time are used for grading the length of the temperature changing time, and the grade of the temperature changing time can be obtained by comparing the temperature changing time with the first time and the second time, so that the speed degree of the temperature changing time can be conveniently known.
In some embodiments, determining the trim valve speed as a function of the ramp time comprises:
determining the valve regulating speed to be a first speed under the condition that the temperature changing time is less than a first time;
determining the valve regulating speed to be a second speed under the condition that the temperature changing time is greater than or equal to the first time and less than or equal to the second time;
determining the valve adjusting speed as a third speed under the condition that the temperature changing time is greater than the second time;
the first speed is higher than the second speed, and the second speed is higher than the third speed.
Under the condition that the temperature change time is less than the first time, the temperature change time is short, namely the exhaust temperature of the compressor changes rapidly, the valve adjusting speed is also high, and therefore the exhaust and power of the compressor are stable. When the temperature change time is longer than the second time, the temperature change time is longer, namely the exhaust temperature of the compressor is slower in change, so that the valve adjusting speed is slower, and the exhaust and power of the compressor are more stable. When the temperature change time is between the first time and the second time, the change of the exhaust temperature of the compressor is between the two conditions, and the valve adjusting speed is also between the first speed and the third speed, so that the exhaust and the power of the compressor are stable. Optionally, the first time is 10s and the second time is 20 s.
It should be noted that different electronic expansion valves may have different valve adjusting speeds, and in the actual use process, the specific values of the first speed, the second speed, and the third speed may be determined within the range of the valve adjusting speed of the electronic expansion valve by combining the value range of the valve adjusting speed of the electronic expansion valve itself, and the three may meet the above requirements. For example, the first speed is 10 s/step, the second speed is 20 s/step, and the third speed is 25 s/step.
In some embodiments, the method for adjusting the electronic expansion valve of the outdoor unit of the air conditioner further comprises: and under the condition that the absolute value of the difference between the actual exhaust temperature of the compressor and the target exhaust temperature belongs to a second interval, detecting the real-time absolute value of the difference after keeping the opening of the electronic expansion valve for a preset time, and if the real-time absolute value of the difference belongs to a first subinterval of the second interval, determining that the valve adjusting speed is a fourth speed, wherein the fourth speed is slower than the third speed, and the maximum value of the second interval is smaller than the minimum value of the first interval.
The maximum value of the second interval is smaller than the minimum value of the first interval, for example, the first interval is (3,15), and the second interval is [0,3 ]. When the absolute value of the difference between the actual exhaust temperature of the compressor and the target exhaust temperature belongs to the second interval, the opening degree of the electronic expansion valve can be kept unchanged, the exhaust temperature is detected again after the preset time is continued, a real-time difference absolute value is obtained, and the degree of proximity between the actual exhaust temperature of the compressor and the target exhaust temperature is determined according to the real-time difference absolute value.
Wherein the real-time absolute difference value is an absolute difference value between an actual exhaust temperature detected after the opening of the electronic expansion valve is maintained for a preset time and a target exhaust temperature, for example, the actual exhaust temperature detected after the opening of the electronic expansion valve is maintained for the preset time is T1', target exhaust temperature is T0If the real-time difference absolute value is DeltaT1’，△T1’＝|T0-T1’|。
In this embodiment, the second interval may be divided into two sub-intervals in advance: the device comprises a first sub-interval and a second sub-interval, wherein the maximum value of the first sub-interval is equal to the maximum value of the second interval, and the minimum value of the second sub-interval is equal to the minimum value of the second interval. As an example, the second interval is [0,3], and the first sub-interval may be [1,3], and the second sub-interval may be [0,1 ].
The second interval is divided through the mode, when the actual temperature of the compressor is close to the target exhaust temperature, whether the actual exhaust temperature of the compressor reaches the target exhaust temperature or not can be further judged, the current opening degree is kept under the condition that the target exhaust temperature is reached, the valve adjusting speed is adjusted under the condition that the target exhaust temperature is not reached, the opening degree of the electronic expansion valve is further adjusted, the exhaust temperature of the compressor is enabled to change stably, and the large fluctuation of the exhaust and power of the compressor is avoided.
When the absolute value of the real-time difference value belongs to the first sub-interval of the second interval, it is considered that the discharge temperature of the compressor is still relatively high although it is relatively close, and the opening degree and the valve adjusting speed of the electronic expansion valve need to be further adjusted. Therefore, when the real-time difference absolute value belongs to the first subinterval, the valve adjusting speed is determined to be the fourth speed, and the fourth speed is slower than the third speed, so that when the actual exhaust temperature of the compressor is close to the target temperature, the valve adjusting speed is adjusted to be slower, and the exhaust temperature of the compressor can be stably close to the target exhaust temperature. As an example, the third speed may be 25 s/step and the fourth speed may be 30 s/step. The upper and lower boundary values of the first sub-interval are larger values in the second interval.
Through the embodiment, the approach degree can be further judged under the condition that the actual exhaust temperature of the compressor is close to the target exhaust temperature, and the valve adjusting speed is continuously adjusted under the condition that the real-time difference absolute value is larger in the second interval, so that the actual exhaust temperature of the compressor is stably close to the target exhaust temperature, and the exhaust and power of the compressor are prevented from generating large fluctuation.
In some embodiments, the method for adjusting the electronic expansion valve of the outdoor unit of the air conditioner further comprises: and in the process of adjusting the electronic expansion valve at the fourth speed, if the variation amplitude of the exhaust temperature is larger than the preset amplitude, the opening degree of the electronic expansion valve is retreated to the previous opening degree.
In the process of adjusting the electronic expansion valve at the fourth speed, if the variation amplitude of the exhaust temperature is larger than the preset amplitude, which indicates that the exhaust temperature of the compressor suddenly fluctuates greatly, the electronic expansion valve enters a valve opening flow variation sensitive area, and at the moment, the opening of the electronic expansion valve is retreated to the previous opening and is kept unchanged, so that the sensitive area can be avoided as much as possible, and the exhaust temperature of the compressor can be kept changing stably.
The former opening degree refers to an opening degree which is 1 step from the current opening degree and is before the current opening degree of the electronic expansion valve. For example, when the opening degree of the electronic expansion valve is 85%, the opening degree of the electronic expansion valve is 80% after the adjustment is continued for 1 step, and if the variation width of the exhaust gas temperature is larger than the preset width, the opening degree of the electronic expansion valve can be returned to 85%, that is, the previous opening degree is 85%.
The variation range refers to an absolute value of a variation value of the compressor discharge temperature corresponding to each unit opening degree of the electronic expansion valve variation, for example, the compressor discharge temperature is increased or decreased by 5% of the electronic expansion valve opening degree. The unit opening degree may be an opening degree change value corresponding to each step of adjustment of the electronic expansion valve, for example, an opening degree change value corresponding to each step of adjustment of the electronic expansion valve. Or, the variation range refers to an absolute value of a variation value of the discharge temperature of the compressor corresponding to the electronic expansion valve at a preset time, for example, the electronic expansion valve is increased or decreased by 5 ℃ at 30 s.
Through the embodiment, in the process of adjusting the valve at the fourth speed, if the exhaust temperature of the compressor fluctuates greatly suddenly, the opening degree of the electronic expansion valve can be adjusted in time, so that the exhaust and power of the compressor are prevented from fluctuating greatly.
In some embodiments, the method for adjusting the electronic expansion valve of the outdoor unit of the air conditioner further comprises: and in the process of adjusting the electronic expansion valve at the fourth speed, if the variation amplitude of the exhaust temperature is smaller than or equal to the preset amplitude, keeping the current opening of the electronic expansion valve.
If the variation amplitude of the exhaust temperature is smaller than or equal to the preset amplitude, the variation of the exhaust temperature of the compressor can be considered to be stable, and the current opening degree of the electronic expansion valve is kept at the moment.
In some embodiments, the method for adjusting the electronic expansion valve of the outdoor unit of the air conditioner further comprises: and if the absolute value of the real-time difference value belongs to a second subinterval of the second interval, maintaining the current opening degree of the electronic expansion valve, wherein the maximum value of the second subinterval is smaller than the minimum value of the first subinterval.
When the real-time difference absolute value belongs to a second subinterval of the second interval, the exhaust temperature of the compressor can be considered to reach the target exhaust temperature, and the current opening degree of the electronic expansion valve is kept. The upper and lower boundary values of the second sub-interval are all smaller values in the second interval. Through the embodiment, the current opening degree of the electronic expansion valve can be kept under the condition that the actual exhaust temperature of the compressor reaches the target exhaust temperature, and the exhaust and power of the compressor are prevented from generating large fluctuation.
In some embodiments, the method for adjusting an electronic expansion valve of an outdoor unit of an air conditioner further comprises: and under the condition that the absolute value of the difference value between the actual exhaust temperature and the target exhaust temperature of the compressor belongs to a third interval, adjusting the opening degree of the electronic expansion valve according to the preset valve adjusting speed, wherein the minimum value of the third interval is larger than the maximum value of the first interval.
The minimum value of the third interval is greater than the maximum value of the first interval, e.g., 3 <. DELTA.T1< 15, the third interval may be Δ T1Not less than 15. And under the condition that the absolute value of the difference value between the actual exhaust temperature of the compressor and the target exhaust temperature belongs to the third interval, the opening degree of the electronic expansion valve can be adjusted according to the preset valve adjusting speed. The preset valve adjusting speed is the default valve adjusting speed of the electronic expansion valve, such as 15 s/step, 20 s/step and the like.
Illustratively, referring to fig. 2, a method for adjusting an electronic expansion valve of an outdoor unit of an air conditioner, the electronic expansion valve being disposed at a general outlet of a condenser, the method includes:
s201, detecting the actual exhaust temperature of the compressor, and determining the absolute value delta T of the difference between the actual exhaust temperature and the target exhaust temperature1；
S202, determining Delta T1Whether or not to satisfy DeltaT1If yes, executing step S203, otherwise executing step S204;
s203, adjusting the electronic expansion valve at a preset valve adjusting speed of 15S/step;
s204, determining Delta T1In the range interval, if 3 <. DELTA.T1If < 15, execute step S205, if Δ T1If the value is less than or equal to 3, executing step S207;
s205, detecting the temperature change time t of the exhaust temperature of the compressor;
s206, if t is less than 10S, determining the first speed as 10S/step, and adjusting the electronic expansion valve at the speed; if t is more than or equal to 10 and less than or equal to 20, determining the second speed as 20 s/step, and adjusting the electronic expansion valve at the speed; if t is more than 20s, determining the third speed as 25 s/step, and adjusting the electronic expansion valve at the speed;
s207, keeping the current opening of the electronic expansion valve for 3min and detecting the absolute value delta T of the real-time difference1’；
S208, determining Delta T1' to which range interval, if Δ T1If' < 1, execute step S209, if 1 ≦ Δ T1If' ≦ 3, go to step S210;
s209, keeping the current opening degree of the electronic expansion valve unchanged;
s210, adjusting the electronic expansion valve at the valve adjusting speed of 30S/step;
s211, detecting the variation amplitude of the actual exhaust temperature of the compressor;
s212, judging whether the variation amplitude within 30S is within 5 ℃, and if so, executing a step S213; if not, go to step S214;
s213, keeping the current opening of the electronic expansion valve unchanged;
and S214, returning the opening degree of the electronic expansion valve to the previous opening degree and keeping the opening degree unchanged.
Through the embodiment, when the exhaust temperature of the compressor is sensitive to the change of the valve adjusting speed, the valve adjusting speed can be intelligently adjusted, the situation that the adjusting speed of the electronic expansion valve is too high or too low is avoided, the opening of the electronic expansion valve is adjusted more stably, and the situation that the exhaust and power fluctuation of the compressor is large is avoided.
Referring to fig. 3, an embodiment of the present disclosure further provides an apparatus for adjusting an electronic expansion valve of an outdoor unit of an air conditioner, where the electronic expansion valve is disposed at a main outlet of a condenser, and the apparatus includes:
an exhaust temperature detection module 300 configured to detect an actual exhaust temperature of the compressor;
the temperature-varying time detection module 310 is configured to detect the temperature-varying time of the compressor exhaust temperature when the absolute value of the difference value between the actual exhaust temperature of the compressor and the target exhaust temperature belongs to a first interval; the temperature change time is the time for the exhaust temperature to change from the current temperature to the adjacent temperature;
a valve trim speed determination module 320 configured to determine a valve trim speed as a function of the temperature swing time;
an expansion valve adjustment module 330 configured to adjust the electronic expansion valve in accordance with the valve adjustment speed.
According to the device, the exhaust temperature detection module 300, the temperature change time detection module 310, the valve adjusting speed determination module 320 and the expansion valve adjusting module 330 are arranged, under the condition that the absolute value of the difference value between the actual exhaust temperature of the compressor and the target exhaust temperature belongs to a first interval, the valve adjusting speed can be determined according to the time for the exhaust temperature to change from the current temperature to the adjacent temperature, the over-high or over-low adjusting speed of the electronic expansion valve is avoided, the opening adjustment of the electronic expansion valve is more stable, and therefore the exhaust and power fluctuation of the compressor is avoided to be large.
The embodiment of the present disclosure also provides an apparatus for adjusting an electronic expansion valve of an outdoor unit of an air conditioner, which includes a processor and a memory storing program instructions, wherein the processor is configured to execute the method for adjusting an electronic expansion valve of an outdoor unit of an air conditioner according to any one of the foregoing embodiments when executing the program instructions.
Referring to fig. 4, an apparatus for adjusting an electronic expansion valve of an outdoor unit of an air conditioner according to an embodiment of the present disclosure includes a processor (processor)100 and a memory (memory) 101. Optionally, the apparatus may also include a Communication Interface (Communication Interface)102 and a bus 103. The processor 100, the communication interface 102, and the memory 101 may communicate with each other via a bus 103. The communication interface 102 may be used for information transfer. The processor 100 may call logic instructions in the memory 101 to execute the method for adjusting the electronic expansion valve of the outdoor unit of the air conditioner according to the above embodiment.
In addition, the logic instructions in the memory 101 may be implemented in the form of software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as independent products.
The memory 101, which is a computer-readable storage medium, may be used for storing software programs, computer-executable programs, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 100 executes functional applications and data processing by executing program instructions/modules stored in the memory 101, that is, implements the method for adjusting the electronic expansion valve of the outdoor unit of the air conditioner in the above embodiment.
The memory 101 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal device, and the like. In addition, the memory 101 may include a high-speed random access memory, and may also include a nonvolatile memory.
The embodiment of the disclosure also provides an outdoor unit of an air conditioner, which includes the device for adjusting the electronic expansion valve of the outdoor unit of the air conditioner as provided in any one of the embodiments. The air conditioner outdoor unit adopts the device, can adjust the electronic expansion valve, makes the discharge temperature of compressor can steadily transition to target discharge temperature, avoids compressor exhaust, power fluctuation great to make air conditioner outdoor unit can stable operation.
The embodiment of the disclosure provides a product (for example, a computer, a mobile phone, etc.) comprising the above device for adjusting an electronic expansion valve of an outdoor unit of an air conditioner.
The embodiment of the present disclosure provides a computer-readable storage medium storing computer-executable instructions configured to perform the above method for adjusting an electronic expansion valve of an outdoor unit of an air conditioner.
An embodiment of the present disclosure provides a computer program product comprising a computer program stored on a computer-readable storage medium, the computer program comprising program instructions that, when executed by a computer, cause the computer to perform the above-mentioned method for adjusting an electronic expansion valve of an outdoor unit of an air conditioner.
The computer-readable storage medium described above may be a transitory computer-readable storage medium or a non-transitory computer-readable storage medium.
The technical solution of the embodiments of the present disclosure may be embodied in the form of a software product, where the computer software product is stored in a storage medium and includes one or more instructions to enable a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method of the embodiments of the present disclosure. And the aforementioned storage medium may be a non-transitory storage medium comprising: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes, and may also be a transient storage medium.
The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. Furthermore, the words used in the specification are words of description only and are not intended to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Similarly, the term "and/or" as used in this application is meant to encompass any and all possible combinations of one or more of the associated listed. Furthermore, the terms "comprises" and/or "comprising," when used in this application, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Without further limitation, an element defined by the phrase "comprising an …" does not exclude the presence of other like elements in a process, method or apparatus that comprises the element. In this document, each embodiment may be described with emphasis on differences from other embodiments, and the same and similar parts between the respective embodiments may be referred to each other. For methods, products, etc. of the embodiment disclosures, reference may be made to the description of the method section for relevance if it corresponds to the method section of the embodiment disclosure.
Those of skill in the art would appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software may depend upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the disclosed embodiments. It can be clearly understood by the skilled person that, for convenience and brevity of description, the specific working processes of the system, the apparatus and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments disclosed herein, the disclosed methods, products (including but not limited to devices, apparatuses, etc.) may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units may be merely a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form. The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to implement the present embodiment. In addition, functional units in the embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. In the description corresponding to the flowcharts and block diagrams in the figures, operations or steps corresponding to different blocks may also occur in different orders than disclosed in the description, and sometimes there is no specific order between the different operations or steps. For example, two sequential operations or steps may in fact be executed substantially concurrently, or they may sometimes be executed in the reverse order, depending upon the functionality involved. Each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by special purpose hardware-based systems that perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
Claims (10)
1. A method for adjusting an electronic expansion valve of an outdoor unit of an air conditioner, wherein the electronic expansion valve is arranged at a main outlet of a condenser, the method comprising:
detecting the actual exhaust temperature of the compressor;
detecting the temperature change time of the compressor exhaust temperature under the condition that the absolute value of the difference value between the actual exhaust temperature and the target exhaust temperature of the compressor belongs to a first interval; the temperature change time is the time for the exhaust temperature to change from the current temperature to the adjacent temperature;
determining the valve adjusting speed according to the temperature changing time;
and adjusting the electronic expansion valve according to the valve adjusting speed.
2. The method of claim 1, wherein determining the trim valve speed as a function of the ramp time comprises:
determining the valve regulating speed to be a first speed under the condition that the temperature changing time is less than a first time;
determining the valve regulating speed to be a second speed under the condition that the temperature changing time is greater than or equal to the first time and less than or equal to the second time;
determining the valve adjusting speed as a third speed under the condition that the temperature changing time is greater than the second time;
wherein the first speed is faster than the second speed, and the second speed is faster than the third speed.
3. The method of claim 2, further comprising:
and under the condition that the absolute value of the difference between the actual exhaust temperature of the compressor and the target exhaust temperature belongs to a second interval, keeping the opening of the electronic expansion valve for a preset time, detecting the real-time absolute value of the difference, and if the real-time absolute value of the difference belongs to a first subinterval of the second interval, determining the valve adjusting speed as a fourth speed, wherein the fourth speed is slower than the third speed, and the maximum value of the second interval is smaller than the minimum value of the first interval.
4. The method of claim 3, further comprising:
and in the process of adjusting the electronic expansion valve at the fourth speed, if the variation amplitude of the exhaust temperature is larger than the preset amplitude, the opening degree of the electronic expansion valve is retreated to the previous opening degree.
5. The method of claim 3, further comprising:
and in the process of adjusting the electronic expansion valve at the fourth speed, if the variation amplitude of the exhaust temperature is smaller than or equal to the preset amplitude, keeping the current opening of the electronic expansion valve.
6. The method of claim 3, further comprising:
and if the absolute value of the real-time difference value belongs to a second subinterval of a second interval, maintaining the current opening degree of the electronic expansion valve, wherein the maximum value of the second subinterval is smaller than the minimum value of the first subinterval.
7. The method of any of claims 1 to 6, further comprising:
and under the condition that the absolute value of the difference value between the actual exhaust temperature and the target exhaust temperature of the compressor belongs to a third interval, adjusting the opening degree of the electronic expansion valve according to a preset valve adjusting speed, wherein the minimum value of the third interval is larger than the maximum value of the first interval.
8. An apparatus for adjusting an electronic expansion valve of an outdoor unit of an air conditioner, wherein the electronic expansion valve is disposed at a main outlet of a condenser, the apparatus comprising:
an exhaust temperature detection module configured to detect an actual exhaust temperature of the compressor;
the temperature-varying time detection module is configured to detect the temperature-varying time of the compressor exhaust temperature under the condition that the absolute value of the difference value between the actual exhaust temperature of the compressor and the target exhaust temperature belongs to a first interval; the temperature change time is the time for the exhaust temperature to change from the current temperature to the adjacent temperature;
a valve regulating speed determination module configured to determine a valve regulating speed according to the temperature change time;
an expansion valve adjustment module configured to adjust the electronic expansion valve in accordance with the valve adjustment speed.
9. An apparatus for adjusting an electronic expansion valve of an outdoor unit of an air conditioner, comprising a processor and a memory storing program instructions, wherein the processor is configured to perform the method for adjusting an electronic expansion valve of an outdoor unit of an air conditioner of any one of claims 1 to 7 when executing the program instructions.
10. An outdoor unit of an air conditioner, comprising the apparatus for adjusting an electronic expansion valve of an outdoor unit of an air conditioner as claimed in claim 8 or 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011172171.4A CN112432339B (en) | 2020-10-28 | 2020-10-28 | Method and device for adjusting electronic expansion valve of air conditioner outdoor unit and outdoor unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011172171.4A CN112432339B (en) | 2020-10-28 | 2020-10-28 | Method and device for adjusting electronic expansion valve of air conditioner outdoor unit and outdoor unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112432339A true CN112432339A (en) | 2021-03-02 |
| CN112432339B CN112432339B (en) | 2022-04-19 |
Family
ID=74696366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011172171.4A Active CN112432339B (en) | 2020-10-28 | 2020-10-28 | Method and device for adjusting electronic expansion valve of air conditioner outdoor unit and outdoor unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112432339B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113587338A (en) * | 2021-06-28 | 2021-11-02 | 宁波奥克斯电气股份有限公司 | Compressor exhaust temperature control method and device and air conditioner |
| CN113654280A (en) * | 2021-08-06 | 2021-11-16 | 佛山市顺德区美的电子科技有限公司 | Control method and control device for electronic expansion valve of air conditioner, air conditioner and medium |
| CN113867436A (en) * | 2021-09-17 | 2021-12-31 | 深圳市海一电器有限公司 | Intelligent cooking method and system |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2498036A2 (en) * | 2011-03-08 | 2012-09-12 | DBK David + Baader GmbH | Improvements in and relating to drying of water damaged buildings |
| CN105299974A (en) * | 2015-11-02 | 2016-02-03 | 青岛海尔空调器有限总公司 | Control method for electronic expansion valve of air conditioner |
| CN108088041A (en) * | 2017-12-06 | 2018-05-29 | 广东美的制冷设备有限公司 | Control method, radiation air-conditioner and the storage medium of electric expansion valve |
| CN108224697A (en) * | 2018-01-08 | 2018-06-29 | 珠海亚丁科技有限公司 | Air conditioner electronic expansion valve adjusting method, computer installation, storage medium |
| CN108709295A (en) * | 2018-05-28 | 2018-10-26 | 宁波奥克斯电气股份有限公司 | A kind of variable-frequency multi-connection type air-conditioning system protection control method |
| CN108758998A (en) * | 2018-03-31 | 2018-11-06 | 青岛海尔空调器有限总公司 | The control method of air-conditioning |
| CN110017542A (en) * | 2019-04-17 | 2019-07-16 | 广东美的制冷设备有限公司 | Air conditioner, anti-freeze control method and computer readable storage medium |
| CN110030707A (en) * | 2019-04-04 | 2019-07-19 | 广东美的暖通设备有限公司 | Air-conditioning system adjusting method, air conditioner and computer readable storage medium |
| CN110594959A (en) * | 2019-09-18 | 2019-12-20 | 宁波奥克斯电气股份有限公司 | Air conditioner control method |
| CN111023458A (en) * | 2019-12-30 | 2020-04-17 | 四川长虹空调有限公司 | Electronic expansion valve control method for prolonging frosting period and air conditioner |
| CN111141001A (en) * | 2019-12-31 | 2020-05-12 | Tcl空调器(中山)有限公司 | Control method of air conditioner, air conditioner and computer readable storage medium |
-
2020
- 2020-10-28 CN CN202011172171.4A patent/CN112432339B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2498036A2 (en) * | 2011-03-08 | 2012-09-12 | DBK David + Baader GmbH | Improvements in and relating to drying of water damaged buildings |
| CN105299974A (en) * | 2015-11-02 | 2016-02-03 | 青岛海尔空调器有限总公司 | Control method for electronic expansion valve of air conditioner |
| CN108088041A (en) * | 2017-12-06 | 2018-05-29 | 广东美的制冷设备有限公司 | Control method, radiation air-conditioner and the storage medium of electric expansion valve |
| CN108224697A (en) * | 2018-01-08 | 2018-06-29 | 珠海亚丁科技有限公司 | Air conditioner electronic expansion valve adjusting method, computer installation, storage medium |
| CN108758998A (en) * | 2018-03-31 | 2018-11-06 | 青岛海尔空调器有限总公司 | The control method of air-conditioning |
| CN108709295A (en) * | 2018-05-28 | 2018-10-26 | 宁波奥克斯电气股份有限公司 | A kind of variable-frequency multi-connection type air-conditioning system protection control method |
| CN110030707A (en) * | 2019-04-04 | 2019-07-19 | 广东美的暖通设备有限公司 | Air-conditioning system adjusting method, air conditioner and computer readable storage medium |
| CN110017542A (en) * | 2019-04-17 | 2019-07-16 | 广东美的制冷设备有限公司 | Air conditioner, anti-freeze control method and computer readable storage medium |
| CN110594959A (en) * | 2019-09-18 | 2019-12-20 | 宁波奥克斯电气股份有限公司 | Air conditioner control method |
| CN111023458A (en) * | 2019-12-30 | 2020-04-17 | 四川长虹空调有限公司 | Electronic expansion valve control method for prolonging frosting period and air conditioner |
| CN111141001A (en) * | 2019-12-31 | 2020-05-12 | Tcl空调器(中山)有限公司 | Control method of air conditioner, air conditioner and computer readable storage medium |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113587338A (en) * | 2021-06-28 | 2021-11-02 | 宁波奥克斯电气股份有限公司 | Compressor exhaust temperature control method and device and air conditioner |
| CN113587338B (en) * | 2021-06-28 | 2022-11-29 | 宁波奥克斯电气股份有限公司 | Compressor exhaust temperature control method and device and air conditioner |
| CN113654280A (en) * | 2021-08-06 | 2021-11-16 | 佛山市顺德区美的电子科技有限公司 | Control method and control device for electronic expansion valve of air conditioner, air conditioner and medium |
| CN113654280B (en) * | 2021-08-06 | 2022-09-16 | 佛山市顺德区美的电子科技有限公司 | Control method and control device for electronic expansion valve of air conditioner, air conditioner and medium |
| CN113867436A (en) * | 2021-09-17 | 2021-12-31 | 深圳市海一电器有限公司 | Intelligent cooking method and system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112432339B (en) | 2022-04-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112432339B (en) | Method and device for adjusting electronic expansion valve of air conditioner outdoor unit and outdoor unit | |
| CN109506328B (en) | Control method of air conditioner electronic expansion valve and air conditioner | |
| EP2288859B1 (en) | Method of controlling an air cooled heat exchanger | |
| CN104879881A (en) | Constant-frequency air conditioner and control method and unit thereof | |
| CN111156748A (en) | Variable frequency air conditioner limiting power control method, storage medium and air conditioner | |
| CN107148541B (en) | Heat source system, and control device and control method therefor | |
| CN109236622B (en) | Compressor frequency control method and device and air conditioner | |
| WO2023040354A1 (en) | Method and apparatus for temperature control of centrifuge, centrifuge and storage medium | |
| CN113091231B (en) | Control method and device for air conditioner and air conditioner | |
| CN114838530A (en) | Control method and device for air conditioner electronic expansion valve, air conditioner and storage medium | |
| CN114383268A (en) | Method and device for controlling electronic expansion valve, air conditioner and storage medium | |
| CN112254312A (en) | Method and device for controlling air conditioner and air conditioner | |
| CN117029225A (en) | Method and device for controlling air conditioner, air conditioner and storage medium | |
| CN116182369A (en) | Method and device for controlling air outlet temperature of air conditioner, air conditioner and storage medium | |
| CN113983692B (en) | Method and device for controlling hot water supply equipment and hot water supply equipment | |
| CN116447720A (en) | Method and device for controlling air conditioner, electronic equipment and storage medium | |
| CN113357803B (en) | Method and device for controlling electronic expansion valve of air conditioner and air conditioner | |
| CN115111731A (en) | Method and device for controlling air conditioner and air conditioner | |
| CN114353250A (en) | Control method and device for oil return of multi-split air conditioner and air conditioner | |
| CN114413404A (en) | Method and device for reducing noise of air conditioner refrigerant, air conditioner and storage medium | |
| CN114216217A (en) | Method and device for adjusting power supply of air conditioner and air conditioner | |
| CN111795525A (en) | Heat pump unit control method, control terminal and storage medium | |
| CN113685991B (en) | Control method and device for intelligent air conditioner and intelligent air conditioner | |
| CN108954699B (en) | Air conditioner operation frequency adjusting method and air conditioner system | |
| CN116259785B (en) | High-power fuel cell water inlet temperature control method, device, medium and vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |