CN113091237A - Air conditioner control method and device and air conditioner - Google Patents
Air conditioner control method and device and air conditioner Download PDFInfo
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- CN113091237A CN113091237A CN202010884760.9A CN202010884760A CN113091237A CN 113091237 A CN113091237 A CN 113091237A CN 202010884760 A CN202010884760 A CN 202010884760A CN 113091237 A CN113091237 A CN 113091237A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
- F24F11/67—Switching between heating and cooling modes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—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
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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- General Engineering & Computer Science (AREA)
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- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention relates to an air conditioner control method, a device and an air conditioner, wherein the sending sequence of control signals of all switch elements is determined from a preset control signal sending sequence table, a first control signal is sent according to the sending sequence of the control signals of all switch elements, when a feedback signal returned by the switch element corresponding to the first control signal is received, the next control signal is sent, and the control signals of all switch elements in the air conditioner are sent in sequence, so that the power supply load of the air conditioner is reduced, the cost is saved, and the reliability of the air conditioner is improved.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner control method and device and an air conditioner.
Background
The existing air conditioner is provided with a three-way valve, a four-way valve, an IPM module, an expansion valve and other switch elements, and a main processor of the air conditioner outputs various control signals to the three-way valve, the four-way valve, the IPM module, the expansion valve and other switch elements so as to control the operation of the switch elements and realize the refrigeration or heating function of the air conditioner.
When various switch elements execute corresponding actions according to the control signals, the power supply load of the air conditioner is high, and the service life of the air conditioner is easily influenced.
Disclosure of Invention
The embodiment of the application provides an air conditioner control method and device, which can reduce the power load of the air conditioner and improve the operation reliability of the air conditioner. The technical scheme is as follows:
in a first aspect, an embodiment of the present application provides an air conditioner control method, including the following steps:
step S1: acquiring control signals of all switching elements in the air conditioner;
step S2: determining the transmission sequence of the control signals of each switching element from a preset control signal transmission sequence table;
step S3: sending out a first control signal according to the sending sequence of the control signals of the switch elements;
step S4: when a feedback signal returned by the switching element corresponding to the first control signal is received, sending out a next control signal;
step S5: step S4 continues until the last control signal is issued.
Optionally, the switching element includes a first expansion valve and a second expansion valve;
the first expansion valve is arranged between the indoor heat exchanger and the heat exchanger;
the second expansion valve is arranged between the outdoor heat exchanger and the heat exchanger;
the step of obtaining the control signal of each switch element in the air conditioner comprises the following steps:
and acquiring a first opening degree control signal of the first expansion valve and a second opening degree control signal of the second expansion valve.
Optionally, after the step of sending the first control signal, the method further includes:
acquiring a target opening degree from the first control signal;
and continuously detecting the opening degree of the expansion valve corresponding to the first control signal, and generating a feedback signal if the opening degree of the expansion valve corresponding to the first control signal is equal to the target opening degree.
Optionally, the step of obtaining a first opening degree control signal of the first expansion valve and a second opening degree control signal of the second expansion valve includes:
acquiring an operation mode of the air conditioner;
determining one expansion valve of the first expansion valve and the second expansion valve as a main valve and the other expansion valve as an auxiliary valve according to the operation mode of the air conditioner;
acquiring the exhaust superheat degree and the set temperature of the compressor;
acquiring a target opening corresponding to the compressor exhaust superheat degree from a preset first opening value table, and generating an opening control signal of a main valve; the preset first opening value table stores opening values corresponding to the exhaust superheat degree of the compressor;
acquiring a target opening corresponding to the set temperature from a preset second opening value table, and generating an opening control signal of the auxiliary valve; the preset second opening value table stores each temperature interval of the set temperature and the corresponding opening value of each temperature interval.
Optionally, the step of determining that one expansion valve of the first expansion valve and the second expansion valve is a main valve and the other expansion valve is an auxiliary valve according to the operation mode of the air conditioner includes:
acquiring a switching signal of an air conditioner;
when the air conditioner meets a first preset condition, determining that the second expansion valve is a main valve and the first expansion valve is an auxiliary valve;
otherwise, determining that the first expansion valve is a main valve and the second expansion valve is an auxiliary valve;
wherein the first preset condition comprises:
the air conditioner is in a cooling mode and receives the switching signal, or the air conditioner is in a heating mode and does not receive the switching signal.
Optionally, the step of obtaining the set temperature of the air conditioner includes:
acquiring the outdoor environment temperature and a first opening degree of an auxiliary valve;
acquiring a first target opening corresponding to the outdoor environment temperature from a preset second opening value table;
if the first opening degree is not equal to the first target opening degree, taking the outdoor environment temperature as a set temperature;
otherwise, acquiring the exhaust temperature of the compressor, and acquiring a second target opening corresponding to the exhaust temperature of the compressor from a preset second opening value table;
if the first opening degree is not equal to the second target opening degree, taking the exhaust temperature of the compressor as a set temperature;
and if the first target opening degree and the second target opening degree are both equal to the first opening degree, taking the supercooling degree of the condenser as a set temperature.
Optionally, the switch element further comprises a three-way valve, a four-way valve and an IPM module;
the three-way valve is respectively connected with an input port of the indoor heat exchanger, an output port of the indoor heat exchanger and the four-way valve;
the four-way valve is respectively connected with the indoor heat exchanger, the outdoor heat exchanger, the compressor exhaust port and the compressor suction port;
the IPM module is connected with the compressor and used for supplying power to the compressor;
the step of obtaining the control signal of each switching element in the air conditioner further comprises:
acquiring a three-way valve control signal of the three-way valve, a four-way valve control signal of the four-way valve and an IPM control signal of the IPM module;
the step of determining the transmission order of the control signals of the respective switching elements from a preset control signal transmission order table includes:
acquiring a first sending sequence of control signals of the first expansion valve, the second expansion valve, the three-way valve, the four-way valve and the IPM module from a preset control signal sending sequence table; wherein the first sending sequence is in turn: the IPM control signal, the three-way valve control signal, the four-way valve control signal, the first opening control signal and the second opening control signal.
Optionally, after the step of obtaining a three-way valve control signal of the three-way valve, a four-way valve control signal of the four-way valve, and an IPM control signal of the IPM module, the method further includes:
acquiring the exhaust temperature of a compressor and the outlet temperature of the evaporator;
when the exhaust temperature of the compressor and the outlet temperature of the evaporator satisfy any one of second preset conditions, acquiring a second sending sequence of the control signals of the switching elements, wherein the second sending sequence sequentially comprises: an IPM control signal, a first opening control signal, a second opening control signal, a three-way valve control signal and a four-way valve control signal;
the second preset condition is that the exhaust temperature of the compressor is greater than a first threshold value, and the outlet temperature of the evaporator is greater than a second threshold value.
In a second aspect, an embodiment of the present application provides an air conditioner control device, including:
the control signal acquisition module is used for acquiring control signals of all switching elements in the air conditioner;
a sending sequence acquiring module, configured to determine a sending sequence of the control signal of each switching element from a preset control signal sending sequence table;
the first signal sending module is used for sending a first control signal according to the sending sequence of the control signals of the switch elements;
the second signal sending module is used for sending out the next control signal when receiving the feedback signal returned by the switching element corresponding to the first control signal;
and the third signal sending module is used for continuously executing the steps of the second signal sending module until the last control signal is sent.
In a third aspect, an embodiment of the present application provides an air conditioner, including a compressor, an indoor heat exchanger, an outdoor heat exchanger, a first expansion valve, a second expansion valve, a heat exchanger, a three-way valve, a four-way valve, an IPM module, and a controller;
the compressor is respectively connected with the indoor heat exchanger and the outdoor heat exchanger;
the heat exchanger comprises a first interface, a second interface and a third interface, the first interface of the heat exchanger is connected with the indoor heat exchanger through the first expansion valve, the second interface of the heat exchanger is connected with the outdoor heat exchanger through the second expansion valve, and the third interface of the heat exchanger is connected with the air supplementing port of the compressor;
the three-way valve is respectively connected with an input port of the indoor heat exchanger, an output port of the indoor heat exchanger and the four-way valve;
the four-way valve is respectively connected with the indoor heat exchanger, the outdoor heat exchanger, the compressor exhaust port and the compressor suction port;
the IPM module is connected with the compressor and used for supplying power to the compressor;
the controller comprises a memory and a processor;
the memory for storing one or more programs;
when the one or more programs are executed by the processor, the processor is caused to implement the air conditioner control method as described in any one of the above.
In the embodiment of the application, the sending sequence of the control signals of each switching element is determined from a preset control signal sending sequence table, a first control signal is sent according to the sending sequence of the control signals of each switching element, when a feedback signal returned by the switching element corresponding to the first control signal is received, a next control signal is sent, and the control signals of each switching element in the air conditioner are sent in sequence, so that the power supply load of the air conditioner is reduced, the cost is saved, and the reliability of the air conditioner is improved.
For a better understanding and practice, the invention is described in detail below with reference to the accompanying drawings.
Drawings
Fig. 1 is a flowchart of an air conditioner control method according to an exemplary embodiment of the present invention;
fig. 2 is a schematic structural view of an air conditioner control device according to an exemplary embodiment of the present invention;
fig. 3 is a schematic structural view of an air conditioner according to an exemplary embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
It should be understood that the embodiments described are only some embodiments of the present application, and not all embodiments. All other examples, which can be obtained by a person skilled in the art without making any inventive step based on the embodiments in the present application, belong to the scope of protection of the embodiments in the present application.
The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments of the present application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the application, as detailed in the appended claims. In the description of the present application, it is to be understood that the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not necessarily used to describe a particular order or sequence, nor are they to be construed as indicating or implying relative importance. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In addition, in the description of the present application, "a plurality" means two or more unless otherwise specified. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
As shown in fig. 1, the present invention provides an air conditioner control method, including the steps of:
step S1: acquiring control signals of all switching elements in the air conditioner;
the switch element is an electronic element which is arranged in the air conditioner and is used for opening and closing the pipeline and adjusting and controlling parameters of the conveying medium. For example, the switch element may be an expansion valve, a four-way valve, a three-way valve, an IPM module, or other electronic elements.
The control signal is a control signal which is output by a main controller of the air conditioner and is used for controlling the on/off of each switching element or adjusting and controlling the parameter of the conveying medium.
The conveying medium may be a refrigerant, and the parameter of the conveying medium may be a pressure, a flow rate, a temperature, or the like of the refrigerant.
Step S2: determining the transmission sequence of the control signals of each switching element from a preset control signal transmission sequence table;
the preset control signal transmission sequence table stores the transmission sequence of the control signals of the switching elements. After the control signals of the switch elements are obtained, the sending sequence of the control signals of the switch elements is determined by searching the positions of the control signals of the switch elements in the preset control signal sending sequence table.
Step S3: sending out a first control signal according to the sending sequence of the control signals of the switch elements;
step S4: when a feedback signal returned by the switching element corresponding to the first control signal is received, sending out a next control signal;
the feedback signal is a signal which is sent out after the switching element corresponding to the first control signal receives the control signal, is adjusted according to the control signal and is adjusted.
For example, when the control element is an expansion valve and the first control signal is an opening degree control signal of the expansion valve, after the step of sending the first control signal, the method further comprises:
acquiring a target opening degree from the first control signal;
and continuously detecting the opening degree of the expansion valve corresponding to the first control signal, and generating a feedback signal if the opening degree of the expansion valve corresponding to the first control signal is equal to the target opening degree.
Step S5: step S4 continues until the last control signal is issued.
In the embodiment of the application, the sending sequence of the control signals of each switching element is determined from a preset control signal sending sequence table, a first control signal is sent according to the sending sequence of the control signals of each switching element, when a feedback signal returned by the switching element corresponding to the first control signal is received, a next control signal is sent, and the control signals of each switching element in the air conditioner are sent in sequence, so that the power supply load of the air conditioner is reduced, the cost is saved, and the reliability of the air conditioner is improved.
In an exemplary embodiment, the switching element includes a first expansion valve and a second expansion valve;
the first expansion valve is arranged between the indoor heat exchanger and the heat exchanger;
the second expansion valve is arranged between the outdoor heat exchanger and the heat exchanger;
the step of obtaining the control signal of each switch element in the air conditioner comprises the following steps:
acquiring a first opening control signal of the first expansion valve and a second opening control signal of the second expansion valve;
when the first control signal is a first opening degree control signal, after the step of sending the first control signal, the method further comprises the following steps:
acquiring a first target opening degree from the first opening degree control signal;
continuously detecting the opening degree of the first expansion valve, and generating a first feedback signal if the opening degree of the first expansion valve is equal to the first target opening degree;
when the first control signal is the second opening degree control signal, after the step of sending the first control signal, the method further comprises the following steps:
acquiring a second target opening degree from the second opening degree control signal;
and continuously detecting the opening degree of the second expansion valve, and generating a second feedback signal if the opening degree of the second expansion valve is equal to the second target opening degree.
The opening degree control signal is used for adjusting the opening degree of the expansion valve. Specifically, the opening degree control signal includes a target opening degree of the expansion valve, and the expansion valve adjusts the opening degree to the target opening degree upon receiving the opening degree control signal.
In one example, the step of acquiring a first opening degree control signal of the first expansion valve and a second opening degree control signal of the second expansion valve includes:
acquiring an operation mode of the air conditioner;
determining one expansion valve of the first expansion valve and the second expansion valve as a main valve and the other expansion valve as an auxiliary valve according to the operation mode of the air conditioner;
acquiring the exhaust superheat degree and the set temperature of the compressor;
acquiring a target opening corresponding to the compressor exhaust superheat degree from a preset first opening value table, and generating an opening control signal of a main valve;
and acquiring a target opening corresponding to the set temperature from a preset second opening value table, and generating an opening control signal of the auxiliary valve.
The main valve is used for adjusting the flow of the refrigerant circulation main loop.
The auxiliary valve is used for adjusting the flow of the refrigerant input to the heat exchanger, so that the air supplement quantity of the air supplement enthalpy increasing loop from the heat exchanger to the air supplement port of the compressor is controlled.
In a normal state, when the air conditioner is in a cooling mode, the first expansion valve is used as a main valve, and the second expansion valve is used as an auxiliary valve; when the air conditioner is in the heating mode, the second expansion valve is determined to be the main valve, and the first expansion valve is the auxiliary valve. Therefore, in one example, the determining that one of the first expansion valve and the second expansion valve is a main valve and the other one is an auxiliary valve according to an operation mode of the air conditioner includes:
acquiring a switching signal of an air conditioner;
when the air conditioner meets a first preset condition, determining that the second expansion valve is a main valve and the first expansion valve is an auxiliary valve;
otherwise, determining that the first expansion valve is a main valve and the second expansion valve is an auxiliary valve;
wherein the first preset condition comprises:
the air conditioner is in a cooling mode and receives the switching signal, or the air conditioner is in a heating mode and does not receive the switching signal.
The switching signal is a signal which is sent by the main controller of the air conditioner and enables the main valve and the auxiliary valve to be mutually turned when the running state of the air conditioner changes.
The first preset condition is used for determining which expansion valve of the first expansion valve and the second expansion valve is a main valve and which expansion valve is an auxiliary valve according to the operation mode and the switching signal of the air conditioner.
For example, when the air conditioner is in a cooling mode, in which the first expansion valve is used as a main valve and the second expansion valve is used as an auxiliary valve, and when receiving the low energy efficiency operation control signal, the air conditioner main controller sends a switching signal, uses the second expansion valve as a main valve and the first expansion valve as an auxiliary valve, and generates opening degree control signals of the corresponding main valve and the corresponding auxiliary valve, so as to realize the control of the air conditioner; when the air conditioner is in a heating mode, the second expansion valve is used as a main valve, the first expansion valve is used as an auxiliary valve, and when a defrosting mode switching signal is received, the main controller of the air conditioner sends out a switching signal, the first expansion valve is used as the main valve, the second expansion valve is used as the auxiliary valve, and opening degree control signals of the corresponding main valve and the corresponding auxiliary valve are generated, so that the control of the air conditioner is realized.
The compressor exhaust superheat degree is the difference between the current actual temperature of the compressor and the saturation temperature corresponding to the actual pressure, and when the compressor exhaust superheat degree is too low, liquid refrigerants are easy to enter the compressor, so that the compressor is damaged by liquid impact. Therefore, in the embodiment of the present application, according to the discharge superheat degree of the compressor, a target opening degree corresponding to the discharge superheat degree of the compressor in a preset first opening value table is searched, and an opening degree control signal of the main valve is generated.
In one example, the step of obtaining the superheat degree of the compressor discharge gas comprises the following steps:
acquiring the exhaust pressure and the exhaust temperature of a compressor suction port;
acquiring a saturation temperature corresponding to the exhaust pressure;
and subtracting the saturation temperature corresponding to the exhaust pressure from the exhaust temperature to obtain the exhaust superheat degree of the compressor.
The saturation temperature corresponding to the discharge pressure can be obtained by searching a saturation temperature corresponding to the discharge pressure from a preset pressure-saturation temperature correspondence table according to the discharge pressure of the suction port of the compressor.
The preset first opening value table stores each opening value corresponding to the compressor discharge superheat degree.
And the preset second opening value table stores each temperature interval of the set temperature and the corresponding opening value of each temperature interval.
The set temperature is the working temperature of the air-supply enthalpy-increasing loop and can be used for reflecting the adjustment requirement of the air supply amount of the air-supply enthalpy-increasing loop. In one example, the set temperature may be an outdoor ambient temperature, a compressor discharge temperature, or a condenser subcooling.
Because tonifying qi increases the enthalpy return circuit and is often used for guaranteeing the normal use of air conditioner under the extreme environment, in this application embodiment, preferentially regard outdoor ambient temperature as the settlement temperature, secondly, tonifying qi increases the enthalpy return circuit and also is applied to the regulation of compressor exhaust temperature, consequently, in this application embodiment, the priority level of settlement temperature is: outdoor environment temperature > compressor discharge temperature > condenser supercooling degree.
Specifically, the step of obtaining the set temperature of the air conditioner includes:
acquiring the outdoor environment temperature and a first opening degree of an auxiliary valve;
acquiring a first target opening corresponding to the outdoor environment temperature from a preset second opening value table;
if the first opening degree is not equal to the first target opening degree, taking the outdoor environment temperature as a set temperature;
otherwise, acquiring the exhaust temperature of the compressor, and acquiring a second target opening corresponding to the exhaust temperature of the compressor from a preset second opening value table;
if the first opening degree is not equal to the second target opening degree, taking the exhaust temperature of the compressor as a set temperature;
and if the first target opening degree and the second target opening degree are both equal to the first opening degree, taking the supercooling degree of the condenser as a set temperature.
In an exemplary embodiment, the switching element further comprises a three-way valve, a four-way valve, and an IPM module;
the three-way valve is respectively connected with an input port of the indoor heat exchanger, an output port of the indoor heat exchanger and the four-way valve;
the four-way valve is respectively connected with the indoor heat exchanger, the outdoor heat exchanger, the compressor exhaust port and the compressor suction port;
the IPM module is connected with the compressor and used for supplying power to the compressor;
the step of obtaining the control signal of each switching element in the air conditioner further comprises:
acquiring a three-way valve control signal of the three-way valve, a four-way valve control signal of the four-way valve and an IPM control signal of the IPM module;
the step of determining the transmission order of the control signals of the respective switching elements from a preset control signal transmission order table includes:
acquiring a first sending sequence of control signals of the first expansion valve, the second expansion valve, the three-way valve, the four-way valve and the IPM module from a preset control signal sending sequence table;
wherein the first sending sequence is in turn: the IPM control signal, the three-way valve control signal, the four-way valve control signal, the first opening control signal and the second opening control signal.
When the exhaust temperature of the compressor is higher or the outlet temperature of the evaporator is higher, the viscosity of lubricating oil in the compressor is reduced, and the compressor is easily damaged due to poor lubrication.
Therefore, in another exemplary embodiment, after the step of acquiring a three-way valve control signal of the three-way valve, a four-way valve control signal of the four-way valve, and an IPM control signal of the IPM module, the method further includes:
acquiring the exhaust temperature of a compressor and the outlet temperature of the evaporator;
acquiring a second sending sequence of the control signals of the switching elements when the exhaust temperature of the compressor and the outlet temperature of the evaporator meet any one of second preset conditions;
the second sending sequence is as follows: an IPM control signal, a first opening control signal, a second opening control signal, a three-way valve control signal and a four-way valve control signal;
the second preset condition is that the exhaust temperature of the compressor is greater than a first threshold value, and the outlet temperature of the evaporator is greater than a second threshold value.
Aiming at the condition that the running condition of the compressor is deteriorated, such as higher exhaust temperature of the compressor or higher outlet temperature of the evaporator, the quick adjustment and optimization of the running condition of the compressor are realized by preferentially outputting control signals of the main valve and the auxiliary valve, and the reliability of the air conditioner is improved.
As shown in fig. 2, an embodiment of the present application further provides an air conditioner control device, including:
the control signal acquisition module 1 is used for acquiring control signals of all switching elements in the air conditioner;
a sending sequence acquiring module 2, configured to determine a sending sequence of the control signal of each switching element from a preset control signal sending sequence table;
the first signal sending module 3 is used for sending out a first control signal according to the sending sequence of the control signals of the switch elements;
the second signal sending module 4 is configured to send a next control signal when receiving a feedback signal returned by the switching element corresponding to the first control signal;
and the third signal sending module 5 is configured to continue to execute the steps of the second signal sending module until the last control signal is sent.
It should be noted that, when the air conditioner control device provided in the foregoing embodiment executes the air conditioner control method, only the division of the above functional modules is taken as an example, and in practical applications, the functions may be distributed to different functional modules according to needs, that is, the internal structure of the device may be divided into different functional modules to complete all or part of the functions described above. In addition, the air conditioner control device and the air conditioner control method provided by the above embodiments belong to the same concept, and the detailed implementation process thereof is shown in the method embodiments and is not described herein again.
As shown in fig. 3, an embodiment of the present invention further provides an air conditioner, which includes a compressor 10, an indoor heat exchanger 20, a first expansion valve 30, a heat exchanger 40, a second expansion valve 50, an outdoor heat exchanger 60, an IPM module 70, a three-way valve 80, a four-way valve 90, and a controller (not shown);
the compressor 10 is respectively connected with the indoor heat exchanger 20 and the outdoor heat exchanger 60;
the heat exchanger 40 comprises a first port 41, a second port 42 and a third port 43, the first port 41 of the heat exchanger is connected with the indoor heat exchanger 20 through the first expansion valve 30, the second port 42 of the heat exchanger is connected with the outdoor heat exchanger 60 through the second expansion valve 50, and the third port 43 of the heat exchanger is connected with the gas supplementing port 13 of the compressor;
the three-way valve 80 is respectively connected with an input port of the indoor heat exchanger 20, an output port of the indoor heat exchanger 20 and the four-way valve 90;
the four-way valve 90 is respectively connected with the indoor heat exchanger 20, the outdoor heat exchanger 60, the compressor exhaust port 12 and the compressor suction port 11;
the IPM module 70 is connected to the compressor 10, and is used for supplying power to the compressor 10;
the controller comprises a memory and a processor;
the memory for storing one or more programs;
when the one or more programs are executed by the processor, the processor is caused to implement the air conditioner control method as described in any one of the above.
The heat exchanger 40 may be a flash evaporator, a heat exchange tank, an economizer, or other heat exchange devices with the functions required by the embodiments of the present application.
According to the air conditioner control method, the air conditioner control device and the air conditioner, the sending sequence of the control signals of all the switch elements is determined from the preset control signal sending sequence table, the first control signal is sent according to the sending sequence of the control signals of all the switch elements, when the feedback signal returned by the switch element corresponding to the first control signal is received, the next control signal is sent, and the control signals of all the switch elements in the air conditioner are sent in sequence, so that the power supply load of the air conditioner is reduced, and the cost is saved; in addition, in the embodiment of the application, the operating condition of the compressor is rapidly adjusted and optimized by preferentially outputting control signals of the main valve and the auxiliary valve aiming at the condition that the operating condition of the compressor is deteriorated such as higher exhaust temperature of the compressor or higher outlet temperature of the evaporator, and the like, so that the reliability of the air conditioner is improved.
The present invention is not limited to the above-described embodiments, and various modifications and variations of the present invention are intended to be included within the scope of the claims and the equivalent technology of the present invention if they do not depart from the spirit and scope of the present invention.
Claims (10)
1. An air conditioner control method is characterized by comprising the following steps:
step S1: acquiring control signals of all switching elements in the air conditioner;
step S2: determining the transmission sequence of the control signals of each switching element from a preset control signal transmission sequence table;
step S3: sending out a first control signal according to the sending sequence of the control signals of the switch elements;
step S4: when a feedback signal returned by the switching element corresponding to the first control signal is received, sending out a next control signal;
step S5: step S4 continues until the last control signal is issued.
2. The air conditioner controlling method according to claim 1, wherein the switching element includes a first expansion valve and a second expansion valve;
the first expansion valve is arranged between the indoor heat exchanger and the heat exchanger;
the second expansion valve is arranged between the outdoor heat exchanger and the heat exchanger;
the step of obtaining the control signal of each switch element in the air conditioner comprises the following steps:
and acquiring a first opening degree control signal of the first expansion valve and a second opening degree control signal of the second expansion valve.
3. The air conditioner controlling method according to claim 2, further comprising, after the step of issuing the first control signal:
acquiring a target opening degree from the first control signal;
and continuously detecting the opening degree of the expansion valve corresponding to the first control signal, and generating a feedback signal if the opening degree of the expansion valve corresponding to the first control signal is equal to the target opening degree.
4. The air conditioner control method according to claim 2, wherein the step of obtaining a first opening degree control signal of the first expansion valve and a second opening degree control signal of the second expansion valve comprises:
acquiring an operation mode of the air conditioner;
determining one expansion valve of the first expansion valve and the second expansion valve as a main valve and the other expansion valve as an auxiliary valve according to the operation mode of the air conditioner;
acquiring a target opening corresponding to the compressor exhaust superheat degree from a preset first opening value table, and generating an opening control signal of a main valve; the preset first opening value table stores opening values corresponding to the exhaust superheat degree of the compressor;
acquiring a target opening corresponding to the set temperature from a preset second opening value table, and generating an opening control signal of the auxiliary valve; the preset second opening value table stores each temperature interval of the set temperature and the corresponding opening value of each temperature interval.
5. The air conditioner controlling method according to claim 4, wherein the step of determining that one of the first expansion valve and the second expansion valve is a main valve and the other one is an auxiliary valve according to an operation mode of the air conditioner includes:
acquiring a switching signal of an air conditioner;
when the air conditioner meets a first preset condition, determining that the second expansion valve is a main valve and the first expansion valve is an auxiliary valve;
otherwise, determining that the first expansion valve is a main valve and the second expansion valve is an auxiliary valve;
wherein the first preset condition comprises:
the air conditioner is in a cooling mode and receives the switching signal, or the air conditioner is in a heating mode and does not receive the switching signal.
6. The air conditioner control method according to claim 4, wherein the step of obtaining the set temperature of the air conditioner includes:
acquiring the outdoor environment temperature and a first opening degree of an auxiliary valve;
acquiring a first target opening corresponding to the outdoor environment temperature from a preset second opening value table;
if the first opening degree is not equal to the first target opening degree, taking the outdoor environment temperature as a set temperature;
otherwise, acquiring the exhaust temperature of the compressor, and acquiring a second target opening corresponding to the exhaust temperature of the compressor from a preset second opening value table;
if the first opening degree is not equal to the second target opening degree, taking the exhaust temperature of the compressor as a set temperature;
and if the first target opening degree and the second target opening degree are both equal to the first opening degree, taking the supercooling degree of the condenser as a set temperature.
7. The air conditioner controlling method according to claim 2, wherein the switching element further comprises a three-way valve, a four-way valve, and an IPM module;
the three-way valve is respectively connected with an input port of the indoor heat exchanger, an output port of the indoor heat exchanger and the four-way valve;
the four-way valve is respectively connected with the indoor heat exchanger, the outdoor heat exchanger, the compressor exhaust port and the compressor suction port;
the IPM module is connected with the compressor and used for supplying power to the compressor;
the step of obtaining the control signal of each switching element in the air conditioner further comprises:
acquiring a three-way valve control signal of the three-way valve, a four-way valve control signal of the four-way valve and an IPM control signal of the IPM module;
the step of determining the transmission order of the control signals of the respective switching elements from a preset control signal transmission order table includes:
acquiring a first sending sequence of control signals of the first expansion valve, the second expansion valve, the three-way valve, the four-way valve and the IPM module from a preset control signal sending sequence table; wherein the first sending sequence is in turn: the IPM control signal, the three-way valve control signal, the four-way valve control signal, the first opening control signal and the second opening control signal.
8. The air conditioner controlling method according to claim 7, further comprising, after the steps of obtaining a three-way valve control signal of the three-way valve, a four-way valve control signal of the four-way valve, and an IPM control signal of the IPM module:
acquiring the exhaust temperature of a compressor and the outlet temperature of the evaporator;
when the exhaust temperature of the compressor and the outlet temperature of the evaporator satisfy any one of second preset conditions, acquiring a second sending sequence of the control signals of the switching elements, wherein the second sending sequence sequentially comprises: an IPM control signal, a first opening control signal, a second opening control signal, a three-way valve control signal and a four-way valve control signal;
the second preset condition is that the exhaust temperature of the compressor is greater than a first threshold value, and the outlet temperature of the evaporator is greater than a second threshold value.
9. An air conditioner control device, comprising:
the control signal acquisition module is used for acquiring control signals of all switching elements in the air conditioner;
a sending sequence acquiring module, configured to determine a sending sequence of the control signal of each switching element from a preset control signal sending sequence table;
the first signal sending module is used for sending a first control signal according to the sending sequence of the control signals of the switch elements;
the second signal sending module is used for sending out the next control signal when receiving the feedback signal returned by the switching element corresponding to the first control signal;
and the third signal sending module is used for continuously executing the steps of the second signal sending module until the last control signal is sent.
10. An air conditioner is characterized by comprising a compressor, an indoor heat exchanger, an outdoor heat exchanger, a first expansion valve, a second expansion valve, a heat exchanger, a three-way valve, a four-way valve, an IPM module and a controller;
the compressor is respectively connected with the indoor heat exchanger and the outdoor heat exchanger;
the heat exchanger comprises a first interface, a second interface and a third interface, the first interface of the heat exchanger is connected with the indoor heat exchanger through the first expansion valve, the second interface of the heat exchanger is connected with the outdoor heat exchanger through the second expansion valve, and the third interface of the heat exchanger is connected with the air supplementing port of the compressor;
the three-way valve is respectively connected with an input port of the indoor heat exchanger, an output port of the indoor heat exchanger and the four-way valve;
the four-way valve is respectively connected with the indoor heat exchanger, the outdoor heat exchanger, the compressor exhaust port and the compressor suction port;
the IPM module is connected with the compressor and used for supplying power to the compressor;
the controller comprises a memory and a processor;
the memory for storing one or more programs;
when the one or more programs are executed by the processor, the processor is caused to implement the air conditioner control method according to any one of claims 1 to 8.
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| JP2009222339A (en) * | 2008-03-18 | 2009-10-01 | Daikin Ind Ltd | Transmission device for air conditioner |
| JP2012057915A (en) * | 2010-09-13 | 2012-03-22 | Takenaka Komuten Co Ltd | Air conditioning equipment |
| CN203671820U (en) * | 2014-01-28 | 2014-06-25 | 日照保宁电气科技有限公司 | Air source integrated central air conditioner |
| CN105737334A (en) * | 2016-02-22 | 2016-07-06 | 广东美的暖通设备有限公司 | Multiple on-line system and mode switching control method thereof |
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2020
- 2020-08-28 CN CN202010884760.9A patent/CN113091237B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009222339A (en) * | 2008-03-18 | 2009-10-01 | Daikin Ind Ltd | Transmission device for air conditioner |
| JP2012057915A (en) * | 2010-09-13 | 2012-03-22 | Takenaka Komuten Co Ltd | Air conditioning equipment |
| CN203671820U (en) * | 2014-01-28 | 2014-06-25 | 日照保宁电气科技有限公司 | Air source integrated central air conditioner |
| CN105737334A (en) * | 2016-02-22 | 2016-07-06 | 广东美的暖通设备有限公司 | Multiple on-line system and mode switching control method thereof |
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