CN109945398B - Air conditioner and control method and control device thereof - Google Patents
Air conditioner and control method and control device thereof Download PDFInfo
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- CN109945398B CN109945398B CN201910252194.7A CN201910252194A CN109945398B CN 109945398 B CN109945398 B CN 109945398B CN 201910252194 A CN201910252194 A CN 201910252194A CN 109945398 B CN109945398 B CN 109945398B
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Abstract
The application discloses an air conditioner and a control method and a control device thereof, wherein a first throttling part and a second throttling part are arranged in the air conditioner, the first throttling part comprises a refrigerating throttling part and a heating throttling part, and the second throttling part is arranged on a pipeline between the heating throttling part and an electric control component; the method comprises the following steps: and acquiring the dew point temperature of the air conditioner in the refrigeration mode and the first temperature at the outlet of the second throttling component, and adjusting the opening of the second throttling component according to the first temperature and the dew point temperature. The control method can enable the air conditioner to adapt to different working conditions, and improves the refrigeration output capacity of the air conditioner under the high-temperature working condition under the condition of ensuring that the service life of components is not damaged.
Description
Technical Field
The present disclosure relates to the field of air conditioners, and particularly to an air conditioner and a control method and a control device thereof.
Background
When a frequency conversion split machine product (such as an air conditioner) is in a high-temperature working condition, a refrigerant pipe scheme is usually adopted to radiate the electric control component part, and if the radiating condition of the module is not good, the refrigerating capacity is greatly attenuated.
In the related art, a scheme of secondary throttling is provided to ensure the capacity and energy efficiency of the air conditioner under the conventional working condition and the normal work of the air conditioner under the outdoor high-temperature environment. However, because the dew point temperatures of the electronic control components under different outdoor high-temperature working conditions are different, the scheme of secondary throttling is often very limited, and balance cannot be achieved between the improvement of high-temperature refrigeration capacity and the guarantee of no condensation inside the electronic control components.
Disclosure of Invention
The embodiment of the application provides an air conditioner and a control method and a control device thereof, and the opening of a second throttling component can be adjusted according to the dew point temperature of the air conditioner in a refrigeration mode and the first temperature at the outlet of the second throttling component, so that the air conditioner is suitable for different working conditions, and the refrigeration output capacity of the air conditioner under the high-temperature working condition is improved under the condition that the service life of components is guaranteed not to be damaged.
The embodiment of the application provides a control method of an air conditioner, wherein a first throttling component and a second throttling component are arranged in the air conditioner, the first throttling component comprises a refrigerating throttling component and a heating throttling component, and the second throttling component is arranged on a pipeline between the heating throttling component and an electric control assembly; the control method of the air conditioner comprises the following steps: acquiring the dew point temperature of the air conditioner in a refrigeration mode and a first temperature at an outlet of the second throttling component; and adjusting the opening degree of the second throttling part according to the first temperature and the dew point temperature.
In addition, the control method of the air conditioner proposed according to the above-mentioned embodiment of the present application may further have the following additional technical features:
in one embodiment of the present application, the adjusting the opening degree of the second throttling part according to the first temperature and the dew point temperature includes: identifying that a first condition is satisfied between the first temperature and the dew point temperature, wherein the first condition is that the first temperature is greater than the dew point temperature and a difference between the first temperature and the dew point temperature is greater than a first preset value; and controlling the second throttling component to reduce the current opening according to a preset step length.
In an embodiment of the application, before controlling the second throttling component to decrease the current opening according to a preset step length, the method further includes: recognizing that the exhaust temperature of a compressor in the air conditioner meets a second condition, wherein the second condition is that the exhaust temperature is less than a preset exhaust temperature; identifying that a third condition is satisfied between an outlet temperature of a condenser and the first temperature, wherein the third condition is that the outlet temperature is greater than the first temperature and a difference between the outlet temperature and the first temperature is greater than a second preset value.
In an embodiment of the application, after controlling the second throttling component to decrease the current opening according to a preset step length, the method further includes: continuing to acquire and identify the first temperature, the dew point temperature, and the outlet temperature and the exhaust temperature; identifying that the first condition is not met between the first temperature and the dew point temperature; or, identifying that the exhaust temperature does not satisfy the second condition; or, identifying that the third condition is not met between the outlet temperature and the first temperature; and controlling the current opening degree of the second throttling part to be updated to the previous opening degree.
In an embodiment of the present application, after the controlling the current opening degree of the second throttling part to be updated to the previous opening degree, the method further includes: and reducing the preset step length, controlling the second throttling component to reduce the current opening according to the reduced preset step length, and continuously acquiring and identifying the first temperature, the dew point temperature, the outlet temperature and the exhaust temperature.
In an embodiment of the present application, after obtaining the dew point temperature of the air conditioner, the method further includes: comparing the currently acquired dew point temperature with the previously acquired dew point temperature, identifying that the difference between the currently acquired dew point temperature and the previously acquired dew point temperature is within a preset difference range, and controlling the dew point temperature of the air conditioner to continuously use the previously acquired dew point temperature; and recognizing that the difference between the currently acquired dew point temperature and the previously acquired dew point temperature is not within a preset difference range, and controlling the dew point temperature of the air conditioner to be updated to the currently acquired dew point temperature.
In an embodiment of the present application, before obtaining the dew point temperature of the air conditioner in the cooling mode, the method further includes: and responding to an instruction for controlling the air conditioner to operate in the cooling mode, and controlling the opening degree of the second throttling part to be maximum.
Embodiments of the present application provide a non-transitory computer-readable storage medium on which a computer program is stored, the program, when executed by a processor, implementing the control method of the air conditioner described above.
The embodiment of the application provides a controlling means of air conditioner, be provided with first throttle part and second throttle part in the air conditioner, wherein, first throttle part is including refrigeration throttle part and heating throttle part, second throttle part sets up on heating the pipeline between throttle part and the automatically controlled subassembly, the controlling means of air conditioner includes: the obtaining module is used for obtaining the dew point temperature of the air conditioner in the refrigerating mode and the first temperature at the outlet of the second throttling component; and the control module is used for adjusting the opening degree of the second throttling component according to the first temperature and the dew point temperature.
In addition, the control device of the air conditioner according to the above embodiment of the present application may further have the following additional technical features:
in an embodiment of the application, the control module adjusts the opening degree of the second throttling element according to the first temperature and the dew point temperature, and is specifically configured to: identifying that a first condition is satisfied between the first temperature and the dew point temperature, wherein the first condition is that the first temperature is greater than the dew point temperature and a difference between the first temperature and the dew point temperature is greater than a first preset value; and controlling the second throttling component to reduce the current opening according to a preset step length.
In an embodiment of the application, before the control module controls the second throttling component to decrease the current opening according to a preset step length, the control module is further configured to: recognizing that the exhaust temperature of a compressor in the air conditioner meets a second condition, wherein the second condition is that the exhaust temperature is less than a preset exhaust temperature; identifying that a third condition is satisfied between an outlet temperature of a condenser and the first temperature, wherein the third condition is that the outlet temperature is greater than the first temperature and a difference between the outlet temperature and the first temperature is greater than a second preset value.
In an embodiment of the application, after the control module controls the second throttling component to decrease the current opening according to a preset step length, the control module is further configured to: continuing to acquire and identify the first temperature, the dew point temperature, and the outlet temperature and the exhaust temperature; identifying that the first condition is not met between the first temperature and the dew point temperature; or, identifying that the exhaust temperature does not satisfy the second condition; or, identifying that the third condition is not met between the outlet temperature and the first temperature; and controlling the current opening degree of the second throttling part to be updated to the previous opening degree.
In one embodiment of the present application, after the control module controls the current opening degree of the second throttling element to be updated to the previous opening degree, the control module is further configured to: and reducing the preset step length, controlling the second throttling component to reduce the current opening according to the reduced preset step length, and continuously acquiring and identifying the first temperature, the dew point temperature, the outlet temperature and the exhaust temperature.
In an embodiment of the application, after the obtaining module obtains the dew point temperature of the air conditioner, the obtaining module is further configured to: comparing the currently acquired dew point temperature with the previously acquired dew point temperature, identifying that the difference between the currently acquired dew point temperature and the previously acquired dew point temperature is within a preset difference range, and controlling the dew point temperature of the air conditioner to continuously use the previously acquired dew point temperature; and recognizing that the difference between the currently acquired dew point temperature and the previously acquired dew point temperature is not within a preset difference range, and controlling the dew point temperature of the air conditioner to be updated to the currently acquired dew point temperature.
In an embodiment of the application, before the control module obtains the dew point temperature of the air conditioner in the cooling mode through the obtaining module, the control module is further configured to: and responding to an instruction for controlling the air conditioner to operate in the cooling mode, and controlling the opening degree of the second throttling part to be maximum.
The embodiment of the application provides an air conditioner, which comprises the control device of the air conditioner.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
this application can improve the refrigeration output capacity of air conditioner high temperature operating mode under guaranteeing not to harm components and parts life condition, realizes the condensation function of preventing of automatically controlled components and parts through introducing first temperature and dew point temperature.
Drawings
Fig. 1 is a flowchart illustrating a control method of an air conditioner according to a first embodiment of the present disclosure;
fig. 2 is a system diagram of an air conditioner according to a second embodiment of the present application;
fig. 3 is a block diagram schematically illustrating a control apparatus of an air conditioner according to a third embodiment of the present invention; and
fig. 4 is a block diagram of an air conditioner according to a fourth embodiment of the present invention.
Detailed Description
In order to solve the technical problems that in the prior art, due to the fact that the dew point temperatures of the electric control components are different under different outdoor high-temperature working conditions, secondary throttling cannot balance between improvement of high-temperature refrigeration capacity and guarantee that condensation does not exist inside the electric control components, the application provides the control method of the air conditioner, the opening degree of the second throttling component can be adjusted according to the dew point temperature of the air conditioner in a refrigeration mode and the first temperature at the outlet of the second throttling component, the air conditioner is made to adapt to different working conditions, and the refrigeration output capacity of the air conditioner under the high-temperature working conditions is improved under the condition that the service life of the components is guaranteed not to be damaged.
In order to better understand the above technical solutions, exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.
Example one
Fig. 1 is a flowchart of a control method of an air conditioner according to a first embodiment of the present application.
In one embodiment of the present application, as shown in fig. 2, a first throttling part and a second throttling part are provided in the air conditioner, wherein the first throttling part may include a cooling throttling part and a heating throttling part, and the second throttling part is provided on a pipeline between the heating throttling part and the electric control component. When the air conditioner operates in a cooling mode, the heating throttling component does not work, and the cooling throttling component works. The heating throttling component and the refrigerating throttling component can be electronic expansion valves capable of adjusting the flow of the refrigerant, can also be throttling valves incapable of adjusting the flow of the refrigerant, and can be selected according to actual conditions.
As shown in fig. 1, the method for controlling an air conditioner according to the embodiment of the present application may include the following steps:
and S1, acquiring the dew point temperature of the air conditioner in the refrigerating mode and the first temperature at the outlet of the second throttling part.
According to an embodiment of the present application, obtaining the dew point temperature of the air conditioner in the cooling mode may include: the method comprises the steps of obtaining the atmospheric pressure of the environment where the air conditioner is located, the outdoor environment temperature of the environment where the air conditioner is located and the wet bulb temperature of the outdoor environment, and obtaining the dew point temperature of the air conditioner according to the outdoor environment temperature, the wet bulb temperature and the atmospheric pressure. For example, it can be according to the formula Td＝n0+n1lne+n2(lne)2+n3(lne)3+n4(lne)4+n5(lne)5+n6(lne)6Calculating the dew point temperature of the air conditioner during refrigerating operation, wherein e is the ambient water vapor pressure, n0、n1、n2、n3、n4、n5、n6Is a constant. The calculation method of the ambient water vapor pressure e can be according to the formula e ═ ew-A*P*(T4-TS) Is obtained by calculation, wherein ewFor saturated vapor pressure, A is the ventilation coefficient, e.g. 0.00067 can be taken, P is the current atmospheric pressure, TsIs the outdoor ambient wet bulb temperature, T4Is the outdoor ambient temperature. Saturated water vapour pressure ewCan be calculated according to formula ew＝ewsexp[13.3185×(1-TS/Td)-1.9760×(1-TS/Td)2-0.6445×(1-TS/Td)3-0.1299×(1-TS/Td)4]Is obtained by calculation, ewsAs a constant, a value of 1013.25hPa can be taken.
In another embodiment of the present application, the dew point temperature of the air conditioner during the cooling operation can be obtained according to a preset table (outdoor ambient temperature-current atmospheric pressure-outdoor dew point temperature). The preset table is obtained through a large number of experimental tests.
The temperature at the outlet of the second throttling component can be obtained through a temperature sensor arranged at the outlet of the second throttling component, and the obtained temperature is recorded as the first temperature.
In an embodiment of the present application, before obtaining the dew point temperature of the air conditioner in the cooling mode, the method further includes: and controlling the opening degree of the second throttling part to be maximum in response to an instruction for controlling the air conditioner to operate in the cooling mode. That is, when the air conditioner is operated in the cooling mode, the heating throttle part does not work, the second throttle part is fully opened, and the outlet temperature of the condenser is basically the same as the first temperature.
And S2, adjusting the opening degree of the second throttling component according to the first temperature and the dew-point temperature.
According to an embodiment of the application, adjusting the opening degree of the second throttling part according to the first temperature and the dew point temperature comprises: identifying that a first condition is met between the first temperature and the dew point temperature, wherein the first condition is that the first temperature is greater than the dew point temperature and the difference between the first temperature and the dew point temperature is greater than a first preset value; and controlling the second throttling component to reduce the current opening according to the preset step length. The first preset value and the preset step length may be calibrated according to actual conditions, for example, the first preset value may be 1 ℃.
Specifically, when the air conditioner operates in a refrigeration mode and operates for a period of time, the dew point temperature Td of the air conditioner in the refrigeration operation and the first temperature Tj at the outlet of the second throttling component are obtained, the heating throttling component does not work at the moment, the temperature difference between the dew point temperature Td and the first temperature Tj is obtained, the temperature difference is judged, and when the Td-Tj is not more than a first preset value (such as 1 ℃), the current opening is kept unchanged; when Td-Tj is larger than a first preset value (such as 1 ℃), the temperature difference between the Td-Tj and the Td-Tj is larger, in order to ensure the refrigeration effect, the opening degree of the second throttling component can be reduced (the smaller the opening degree of the second throttling component is, the better the throttling effect is, the larger the temperature drop is, the better the refrigeration effect is), and the second throttling component is controlled to reduce the current opening degree by a preset step length, namely the opening degree of the second throttling component is reduced according to the speed of the preset step length until the first condition is not met.
In an embodiment of the present application, before controlling the second throttling component to decrease the current opening according to the preset step length, the method may further include: recognizing that the exhaust temperature of a compressor in the air conditioner meets a second condition, wherein the second condition is that the exhaust temperature is less than a preset exhaust temperature; and identifying that a third condition is met between the outlet temperature of the condenser and the first temperature, wherein the third condition is that the outlet temperature is greater than the first temperature and the difference between the outlet temperature and the first temperature is greater than a second preset value. The preset exhaust temperature and the second preset value may be calibrated according to actual conditions, for example, the preset exhaust temperature may be 100 ℃, and the second preset value may be 13 ℃.
That is, after the first condition is satisfied, before the opening degree of the second throttle is reduced, it may be determined whether the second condition or the third condition is satisfied. And when the exhaust temperature Tp is less than the preset exhaust temperature (such as 100 ℃), or the outlet temperature T3 is greater than the first temperature Tj and the outlet temperature T3-Tj is greater than a second preset value (such as 13 ℃), controlling the second throttling component to reduce the current opening according to preset step length.
In an embodiment of the present application, after controlling the second throttling component to decrease the current opening according to the preset step length, the method further includes: continuously acquiring and identifying the first temperature, the dew point temperature, the outlet temperature and the exhaust temperature; identifying that a first condition is not satisfied between the first temperature and the dew point temperature; or, identifying that the exhaust temperature does not satisfy the second condition; or, identifying that a third condition is not satisfied between the outlet temperature and the first temperature; and controlling the current opening degree of the second throttling part to be updated to the previous opening degree.
Specifically, after the opening degree of the second throttling part is reduced, the first temperature Tj, the dew point temperature Td, the exhaust temperature Tp and the outlet temperature T3 of the condenser are continuously acquired, and the corresponding judgment is made. When Tj-Td is less than or equal to a first preset value (such as 1 ℃) for the first time (the first temperature is close to the dew point temperature, the condensation phenomenon of air conditioning components can occur), or T3-Tj is more than a second preset value (such as 13 ℃) (the refrigerating capacity can not meet the requirements of users), or when Tp is greater than or equal to the preset exhaust temperature (such as 100 ℃) for the first time (the exhaust temperature of the compressor exceeds the preset exhaust temperature, the operation frequency of the compressor is limited, and the stable operation of the compressor is influenced), recording the current opening degree of the second throttling part, and controls the opening degree of the second throttling part to be restored to the previous opening degree and to be operated at the previous opening degree, for example, the current opening is 80 and the preset step is 3, when it is judged that any given condition of the above three conditions is not satisfied, the opening degree of the second restriction member is controlled to return to the previous opening degree 83 and the second restriction member is controlled to operate with the opening degree 83.
In one embodiment of the present application, after controlling the current opening degree of the second throttling part to be updated to the previous opening degree, the method further comprises: and reducing the preset step length, controlling the second throttling component to reduce the current opening according to the reduced preset step length, and continuously acquiring and identifying the first temperature, the dew point temperature, the outlet temperature and the exhaust temperature.
That is, the rate of reducing the opening is reduced, for example, the preset step is a, the reduced step is b, and 2 ≦ b < a. After the second throttling part is controlled to operate at the previous opening degree, the current opening degree is reduced by b steps, for example, the previous opening degree is 83, after b is reduced (such as 2), the second throttling part is controlled to operate at the opening degree of 81, and the first temperature, the dew point temperature, the outlet temperature and the exhaust temperature are continuously detected until Tj-Td is less than or equal to 1 ℃ or Tp is greater than or equal to 100 ℃ for the first time, and the operation returns to the previous operation at the opening degree of the second throttling part.
In one embodiment of the present application, after obtaining the dew point temperature of the air conditioner, the method further includes: comparing the dew point temperature obtained at the current time with the dew point temperature obtained at the previous time, identifying that the difference value between the dew point temperature obtained at the current time and the dew point temperature obtained at the previous time is within a preset difference value range, and controlling the dew point temperature of the air conditioner to continuously use the dew point temperature obtained at the previous time; and recognizing that the difference between the dew point temperature obtained at the current time and the dew point temperature obtained at the previous time is not within a preset difference range, and updating the dew point temperature of the air conditioner to be the dew point temperature obtained at the current time. The preset difference range may be calibrated according to actual conditions, for example, the preset difference may be 0.5 ℃.
In other words, when the air conditioner operates in the cooling mode, the opening degree of the second throttling part is fully opened, the current dew point temperature Td1 is obtained, Td is f (T4, Ts, P), the dew point temperature Td2 is obtained once every preset time (such as 1 hour), the adjacent two dew point temperatures are compared, if abs (Td2-Td1) is less than or equal to 0.5 ℃, the Td value is not updated (namely, the obtained dew point temperature is Td1), if abs (Td2-Td1) is greater than 0.5 ℃, the Td value is updated (namely, the obtained dew point temperature is Td2), and the opening degree of the second throttling part is adjusted according to the updated Td value and the first temperature value. The method for obtaining the dew point temperature is described in detail in the above embodiments, and is not described herein again.
It should be noted that, when the air conditioner operates in the heating mode, the refrigeration throttling component does not work, the heating throttling component works, and the opening degree of the second throttling component can be adjusted to operate according to the situation.
The technical scheme in the embodiment of the application at least has the following technical effects or advantages:
this application can improve the refrigeration output capacity of air conditioner high temperature operating mode under guaranteeing not to harm components and parts life condition, realizes the condensation function of preventing of automatically controlled components and parts through introducing first temperature and dew point temperature.
Example two
The present application also proposes a non-transitory computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the control method of the air conditioner described above.
The technical scheme in the embodiment of the application at least has the following technical effects or advantages:
this application can improve the refrigeration output capacity of air conditioner high temperature operating mode under guaranteeing not to harm components and parts life condition, realizes the condensation function of preventing of automatically controlled components and parts through introducing first temperature and dew point temperature.
Based on the same concept, the embodiment of the application also provides a device corresponding to the method in the first embodiment, which is shown in the third embodiment.
EXAMPLE III
Fig. 3 is a block diagram schematically illustrating a control apparatus of an air conditioner according to a third embodiment of the present invention.
In one embodiment of the present application, a first throttling component and a second throttling component are provided in the air conditioner, wherein the first throttling component includes a cooling throttling component and a heating throttling component, and the second throttling component is provided on a pipeline between the heating throttling component and the electric control component.
As shown in fig. 3, the control apparatus of the air conditioner of the present application may include: an acquisition module 10 and a control module 20. The obtaining module 10 is configured to obtain a dew point temperature of the air conditioner in the cooling mode and a first temperature at an outlet of the second throttling component. And the control module 20 is used for adjusting the opening degree of the second throttling part according to the first temperature and the dew point temperature.
In one embodiment of the present application, the control module 20 adjusts the opening degree of the second throttling element according to the first temperature and the dew point temperature, and is specifically configured to: identifying that a first condition is met between the first temperature and the dew point temperature, wherein the first condition is that the first temperature is greater than the dew point temperature and the difference between the first temperature and the dew point temperature is greater than a first preset value; and controlling the second throttling component to reduce the current opening according to the preset step length.
In an embodiment of the present application, before the control module 20 controls the second throttling element to decrease the current opening by the preset step size, the control module is further configured to: recognizing that the exhaust temperature of a compressor in the air conditioner meets a second condition, wherein the second condition is that the exhaust temperature is less than a preset exhaust temperature; and identifying that a third condition is met between the outlet temperature of the condenser and the first temperature, wherein the third condition is that the outlet temperature is greater than the first temperature and the difference between the outlet temperature and the first temperature is greater than a second preset value.
In an embodiment of the present application, after the control module 20 controls the second throttling component to decrease the current opening according to the preset step length, the control module is further configured to: continuously acquiring and identifying the first temperature, the dew point temperature, the outlet temperature and the exhaust temperature; identifying that a first condition is not satisfied between the first temperature and the dew point temperature; or, identifying that the exhaust temperature does not satisfy the second condition; or, identifying that a third condition is not satisfied between the outlet temperature and the first temperature; and controlling the current opening degree of the second throttling part to be updated to the previous opening degree.
In one embodiment of the subject application, the control module 20, after controlling the current opening of the second throttling element to update to the previous opening, is further configured to: and reducing the preset step length, controlling the second throttling component to reduce the current opening according to the reduced preset step length, and continuously acquiring and identifying the first temperature, the dew point temperature, the outlet temperature and the exhaust temperature.
In an embodiment of the present application, after the obtaining module 10 obtains the dew point temperature of the air conditioner, it is further configured to: comparing the dew point temperature obtained at the current time with the dew point temperature obtained at the previous time, identifying that the difference value between the dew point temperature obtained at the current time and the dew point temperature obtained at the previous time is within a preset difference value range, and controlling the dew point temperature of the air conditioner to continuously use the dew point temperature obtained at the previous time; and recognizing that the difference between the dew point temperature obtained at the current time and the dew point temperature obtained at the previous time is not within a preset difference range, and updating the dew point temperature of the air conditioner to be the dew point temperature obtained at the current time.
In an embodiment of the present application, the control module 20, before obtaining the dew point temperature of the air conditioner in the cooling mode through the obtaining module, is further configured to: and controlling the opening degree of the second throttling part to be maximum in response to an instruction for controlling the air conditioner to operate in the cooling mode.
It should be noted that, for details not disclosed in the control device of the air conditioner in the embodiment of the present application, please refer to details disclosed in the control method of the air conditioner in the embodiment of the present invention, which are not described herein again in detail.
The technical scheme in the embodiment of the application at least has the following technical effects or advantages:
this application can improve the refrigeration output capacity of air conditioner high temperature operating mode under guaranteeing not to harm components and parts life condition, realizes the condensation function of preventing of automatically controlled components and parts through introducing first temperature and dew point temperature.
Based on the same concept, the embodiment of the application also provides an air conditioner corresponding to the device in the third embodiment, which is shown in the fourth embodiment.
Example four
Fig. 4 is a block diagram of an air conditioner according to a fourth embodiment of the present invention.
As shown in fig. 4, the air conditioner 100 of the embodiment of the present application may include: the control device 110 of the air conditioner described above.
The technical scheme in the embodiment of the application at least has the following technical effects or advantages:
this application can improve the refrigeration output capacity of air conditioner high temperature operating mode under guaranteeing not to harm components and parts life condition, realizes the condensation function of preventing of automatically controlled components and parts through introducing first temperature and dew point temperature.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It should be noted that in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The application can be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (12)
1. The control method of the air conditioner is characterized in that a first throttling component and a second throttling component are arranged in the air conditioner, wherein the first throttling component comprises a refrigerating throttling component and a heating throttling component, and the second throttling component is arranged on a pipeline between the heating throttling component and an electric control assembly;
the control method of the air conditioner comprises the following steps:
acquiring the dew point temperature of the air conditioner in a refrigeration mode and a first temperature at an outlet of the second throttling component;
adjusting the opening degree of the second throttling element according to the first temperature and the dew point temperature, wherein the adjusting the opening degree of the second throttling element according to the first temperature and the dew point temperature comprises:
identifying that a first condition is satisfied between the first temperature and the dew point temperature, wherein the first condition is that the first temperature is greater than the dew point temperature and a difference between the first temperature and the dew point temperature is greater than a first preset value;
controlling the second throttling component to reduce the current opening according to the preset step length, wherein before controlling the second throttling component to reduce the current opening according to the preset step length, the method further comprises the following steps:
recognizing that the exhaust temperature of a compressor in the air conditioner meets a second condition, wherein the second condition is that the exhaust temperature is less than a preset exhaust temperature;
identifying that a third condition is satisfied between an outlet temperature of a condenser and the first temperature, wherein the third condition is that the outlet temperature is greater than the first temperature and a difference between the outlet temperature and the first temperature is greater than a second preset value.
2. The method of claim 1, wherein after controlling the second throttling element to decrease the current opening by a preset step size, further comprising:
continuing to acquire and identify the first temperature, the dew point temperature, and the outlet temperature and the exhaust temperature;
identifying that the first condition is not met between the first temperature and the dew point temperature; or the like, or, alternatively,
identifying that the exhaust temperature does not satisfy the second condition; or the like, or, alternatively,
identifying that the third condition is not met between the outlet temperature and the first temperature;
and controlling the current opening degree of the second throttling part to be updated to the previous opening degree.
3. The method of claim 2, wherein after controlling the current opening of the second throttling element to update to the previous opening, further comprising:
and reducing the preset step length, controlling the second throttling component to reduce the current opening according to the reduced preset step length, and continuously acquiring and identifying the first temperature, the dew point temperature, the outlet temperature and the exhaust temperature.
4. The method of claim 1, wherein after obtaining the dew point temperature of the air conditioner, the method further comprises:
comparing the currently acquired dew point temperature with the previously acquired dew point temperature, identifying that the difference between the currently acquired dew point temperature and the previously acquired dew point temperature is within a preset difference range, and controlling the dew point temperature of the air conditioner to continuously use the previously acquired dew point temperature;
and recognizing that the difference between the currently acquired dew point temperature and the previously acquired dew point temperature is not within a preset difference range, and controlling the dew point temperature of the air conditioner to be updated to the currently acquired dew point temperature.
5. The method of claim 1, wherein before obtaining the dew point temperature of the air conditioner in the cooling mode, further comprising:
and responding to an instruction for controlling the air conditioner to operate in the cooling mode, and controlling the opening degree of the second throttling part to be maximum.
6. A non-transitory computer-readable storage medium on which a computer program is stored, characterized in that the program, when executed by a processor, implements the control method of the air conditioner according to any one of claims 1 to 5.
7. The utility model provides a controlling means of air conditioner, its characterized in that is provided with first throttle part and second throttle part in the air conditioner, wherein, first throttle part is including refrigeration throttle part and heating throttle part, the second throttle part sets up on the pipeline between heating throttle part and the automatically controlled subassembly, the controlling means of air conditioner includes:
the obtaining module is used for obtaining the dew point temperature of the air conditioner in the refrigerating mode and the first temperature at the outlet of the second throttling component;
the control module is used for adjusting the opening degree of the second throttling component according to the first temperature and the dew point temperature, and is specifically used for:
identifying that a first condition is satisfied between the first temperature and the dew point temperature, wherein the first condition is that the first temperature is greater than the dew point temperature and a difference between the first temperature and the dew point temperature is greater than a first preset value;
the control module controls the second throttling component to reduce the current opening according to the preset step length, and before the second throttling component reduces the current opening according to the preset step length, the control module is also used for:
recognizing that the exhaust temperature of a compressor in the air conditioner meets a second condition, wherein the second condition is that the exhaust temperature is less than a preset exhaust temperature;
identifying that a third condition is satisfied between an outlet temperature of a condenser and the first temperature, wherein the third condition is that the outlet temperature is greater than the first temperature and a difference between the outlet temperature and the first temperature is greater than a second preset value.
8. The control device of the air conditioner according to claim 7, wherein the control module is further configured to, after controlling the second throttling part to decrease the current opening by a preset step size:
continuing to acquire and identify the first temperature, the dew point temperature, and the outlet temperature and the exhaust temperature;
identifying that the first condition is not met between the first temperature and the dew point temperature; or the like, or, alternatively,
identifying that the exhaust temperature does not satisfy the second condition; or the like, or, alternatively,
identifying that the third condition is not met between the outlet temperature and the first temperature;
and controlling the current opening degree of the second throttling part to be updated to the previous opening degree.
9. The control device of an air conditioner according to claim 8, wherein the control module, after controlling the current opening degree of the second throttling part to be updated to the previous opening degree, is further configured to:
and reducing the preset step length, controlling the second throttling component to reduce the current opening according to the reduced preset step length, and continuously acquiring and identifying the first temperature, the dew point temperature, the outlet temperature and the exhaust temperature.
10. The control device of an air conditioner according to claim 7, wherein after the obtaining module obtains the dew point temperature of the air conditioner, the obtaining module is further configured to:
comparing the currently acquired dew point temperature with the previously acquired dew point temperature, identifying that the difference between the currently acquired dew point temperature and the previously acquired dew point temperature is within a preset difference range, and controlling the dew point temperature of the air conditioner to continuously use the previously acquired dew point temperature;
and recognizing that the difference between the currently acquired dew point temperature and the previously acquired dew point temperature is not within a preset difference range, and controlling the dew point temperature of the air conditioner to be updated to the currently acquired dew point temperature.
11. The control device of the air conditioner according to claim 7, wherein the control module, before acquiring the dew point temperature of the air conditioner in the cooling mode by the acquisition module, is further configured to:
and responding to an instruction for controlling the air conditioner to operate in the cooling mode, and controlling the opening degree of the second throttling part to be maximum.
12. An air conditioner characterized by comprising the control device of the air conditioner according to any one of claims 7 to 11.
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| CN104819595B (en) * | 2015-05-12 | 2017-11-07 | 广东美的暖通设备有限公司 | refrigeration system, control method and device and air conditioner |
| CN105240996B (en) * | 2015-09-24 | 2017-12-05 | 芜湖美智空调设备有限公司 | The control method of air conditioner |
| CN106440252B (en) * | 2016-11-08 | 2019-05-24 | 广东美的暖通设备有限公司 | A kind of air conditioner guard method, protection system and air conditioner |
| CN108518806B (en) * | 2018-05-21 | 2021-03-30 | 广东美的暖通设备有限公司 | Operation control method and device, compressor, air conditioner and readable storage medium |
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