CN114322241B - Air conditioner, control method thereof, air conditioner control device and readable storage medium - Google Patents
Air conditioner, control method thereof, air conditioner control device and readable storage medium Download PDFInfo
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- CN114322241B CN114322241B CN202011063062.9A CN202011063062A CN114322241B CN 114322241 B CN114322241 B CN 114322241B CN 202011063062 A CN202011063062 A CN 202011063062A CN 114322241 B CN114322241 B CN 114322241B
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Abstract
The invention discloses an air conditioner control method, which is based on an air conditioner that a compressor exhaust port and a compression cavity with lower pressure are communicated through a bypass pipeline, wherein a throttling device is arranged in the bypass pipeline, and the method comprises the following steps: in the heating starting stage of the air conditioner, acquiring a temperature parameter of the air conditioner under the current working condition; and if the temperature parameter meets the starting condition of the power boosting operation of the compressor, controlling the throttle device to be opened so as to enable a part of refrigerant discharged by the compressor to flow through the throttle device and enter the compression cavity. The invention also discloses an air conditioner control device, an air conditioner and a computer readable storage medium. The invention aims to realize the purpose of quickly improving the power of the compressor when the air conditioner is started for heating so as to improve the output of the heating capacity of the air conditioner, realize the quick rise of the indoor temperature and meet the comfort of indoor users.
Description
Technical Field
The present invention relates to the field of air conditioning technologies, and in particular, to a method for controlling an air conditioner, an air conditioner control device, an air conditioner, and a computer-readable storage medium.
Background
With the development of science and technology, the living standard of people is improved, the air conditioner is widely applied, the use requirement of people on the air conditioner is higher and higher, and the performance of the air conditioner is continuously optimized. Most of the existing air conditioners can also heat except refrigeration, and heat is transferred to the indoor through the heating of the air conditioners in winter.
At present, the power of a compressor is difficult to rapidly increase when an air conditioner is started for heating, so that the indoor temperature rises slowly, and the comfort of a user is influenced.
Disclosure of Invention
The invention mainly aims to provide an air conditioner control method, which aims to realize the purpose of quickly improving the power of a compressor when an air conditioner is started for heating so as to improve the output of the heating capacity of the air conditioner, realize the quick rise of the indoor temperature and meet the comfort of indoor users.
In order to achieve the above object, the present invention provides a method for controlling an air conditioner, the air conditioner includes a compressor and a bypass line, the compressor includes a compression cavity, the compressor has an exhaust port, the pressure in the compression cavity is less than or equal to a set threshold, the bypass line communicates the exhaust port with the compression cavity, the bypass line has a throttling device, the method includes:
in the heating starting stage of the air conditioner, acquiring a temperature parameter of the air conditioner under the current working condition;
and if the temperature parameter meets the starting condition of the power boosting operation of the compressor, controlling the throttle device to be opened so as to enable a part of refrigerant discharged by the compressor to flow through the throttle device and enter the compression cavity.
Optionally, the throttling device includes a solenoid valve and a capillary tube connected in series with the solenoid valve, and the step of controlling the throttling device to open includes:
and controlling the electromagnetic valve to be opened.
Optionally, the throttle device comprises an electronic expansion valve, and the step of controlling the throttle device to open comprises:
and controlling the electronic expansion valve to be opened to an initial opening degree.
Optionally, after the step of controlling the electronic expansion valve to open to the initial opening degree, the method further includes:
acquiring the current exhaust temperature of the compressor;
and if the current exhaust temperature is less than the exhaust temperature threshold value, controlling the electronic expansion valve to increase the opening degree.
Optionally, the step of controlling the opening degree of the electronic expansion valve to be increased comprises:
acquiring a current first indoor environment temperature and a first set temperature of an air conditioner;
determining a temperature deviation between the first indoor ambient temperature and the first set temperature;
determining the opening degree adjustment rate of the electronic expansion valve according to the temperature deviation; wherein the opening degree adjustment rate is increased along with the increase of the temperature deviation;
and controlling the electronic expansion valve to increase the opening according to the opening adjusting rate.
Optionally, in the heating start stage of the air conditioner, after the step of obtaining the temperature parameter of the air conditioner under the current working condition, the method further includes:
if the temperature parameter does not meet the starting condition, acquiring the maximum running frequency of the compressor; the maximum frequency is determined according to the current outdoor environment temperature, and the maximum frequency is in a decreasing trend along with the decrease of the outdoor environment temperature;
controlling the compressor to operate at less than or equal to the maximum frequency.
Optionally, in the heating start stage of the air conditioner, the step of obtaining the temperature parameter of the air conditioner under the current working condition includes:
when the air conditioner is started to heat, the outdoor environment temperature is obtained as the temperature parameter;
in the heating starting stage of the air conditioner, after the step of obtaining the temperature parameter of the air conditioner under the current working condition, the method further comprises the following steps:
if the outdoor environment temperature is less than or equal to the set outdoor environment temperature, determining that the temperature parameter meets the starting condition;
and if the outdoor environment temperature is greater than the set outdoor environment temperature, determining that the temperature parameter does not meet the starting condition.
Optionally, in the heating start stage of the air conditioner, the step of obtaining the temperature parameter of the air conditioner under the current working condition includes:
when the air conditioner is started to heat, acquiring the current second indoor environment temperature and the current second set temperature of the air conditioner;
when the running time of the air conditioner reaches the set time after the heating start, acquiring the current third indoor environment temperature and the third set temperature of the air conditioner;
and taking the second indoor environment temperature, the second set temperature, the third indoor environment temperature and the third set temperature as the temperature parameters.
Optionally, in the heating start stage of the air conditioner, after the step of obtaining the set temperature of the temperature parameter of the air conditioner under the current working condition as the temperature parameter, the method further includes:
determining a first temperature difference between the second indoor environment temperature and the second set temperature, and determining a second temperature difference between the third indoor environment temperature and the third set temperature;
if the deviation amount of the first temperature difference and the second temperature difference is smaller than or equal to a set threshold value, determining that the temperature parameter meets the starting condition;
and if the deviation amount of the first temperature difference and the second temperature difference is larger than the set threshold value, determining that the temperature parameter does not meet the starting condition.
Optionally, after the step of controlling the opening of the throttling device, the method further includes:
acquiring operating parameters of a compressor;
and if the operating parameters of the compressor meet the exit condition of the power boosting operation of the compressor, controlling the throttling device to be closed.
Optionally, the operation parameter includes a discharge temperature of the compressor, and after the step of obtaining the operation parameter of the compressor, the method further includes:
if the exhaust temperature is greater than or equal to a set exhaust temperature, determining that the exhaust temperature meets the exit condition; or the like, or, alternatively,
the operation parameter includes an operation current of the compressor, and after the step of obtaining the operation parameter of the compressor, the method further includes:
and if the operating current is less than or equal to a set current threshold, determining that the operating current meets the exit condition.
Optionally, after the step of obtaining the operating parameter of the compressor, the method further includes:
if the exhaust temperature is lower than the set exhaust temperature or the running current is higher than the set current threshold, acquiring the current fourth indoor environment temperature and the current fourth set temperature of the air conditioner;
determining a third temperature difference between the fourth indoor ambient temperature and the fourth set temperature;
and if the third temperature difference is less than or equal to a set temperature difference, determining that the operating parameters of the compressor meet the exit condition of the power boosting operation of the compressor.
Further, in order to achieve the above object, the present application also proposes an air conditioning control device including: the air conditioner control system comprises a memory, a processor and an air conditioner control program stored on the memory and capable of running on the processor, wherein the air conditioner control program realizes the steps of the air conditioner control method according to any one of the above items when being executed by the processor.
Further, in order to achieve the above object, the present application also proposes an air conditioner including:
the compressor comprises a compression cavity, the compressor is provided with an exhaust port, and the pressure in the compression cavity is smaller than or equal to a set threshold value;
the bypass pipeline is communicated with the exhaust port and the compression cavity and is provided with a throttling device; and
the air conditioning control device as described above, which is connected to the throttle device.
Optionally, the air conditioner still includes vapour and liquid separator, the compressor still is equipped with the return air mouth, vapour and liquid separator's gaseous phase export passes through first tube coupling with the return air mouth, the compression chamber with the return air mouth intercommunication, bypass line intercommunication the gas vent with first pipeline.
Optionally, the compressor is further provided with an air return port and an air suction port, the compression cavity comprises a first compression cavity and a second compression cavity, the pressure in the second compression cavity is smaller than the pressure in the first compression cavity, the air suction port is communicated with the first compression cavity, the air return port is communicated with the second compression cavity, and the bypass pipeline is communicated with the exhaust port and the air suction port.
Optionally, the throttling device comprises an electronic expansion valve; or the throttling device comprises an electromagnetic valve and a capillary tube connected in series with the electromagnetic valve.
Further, in order to achieve the above object, the present application also proposes a computer readable storage medium having stored thereon an air conditioner control program which, when executed by a processor, implements the steps of the control method of an air conditioner as set forth in any one of the above.
The invention provides a control method of an air conditioner, which is applied to the air conditioner which is communicated with an exhaust port of a compressor and a compression cavity with lower pressure through a bypass pipeline, wherein the bypass pipeline is internally provided with a throttling device, the method acquires a temperature parameter of the air conditioner under the current working condition in the heating starting stage of the air conditioner, when the temperature parameter meets the starting condition of the power increasing operation of the compressor, the current output power of the compressor is lower, at the moment, part of refrigerant discharged by the compressor enters the compression cavity with lower pressure through the throttling device by opening the throttling device in the bypass pipeline, the exhaust gas of the compressor is mixed with low-temperature gas sucked by the compression cavity and then is compressed continuously, the exhaust temperature is further improved, the power of the compressor is quickly increased in the starting stage, the output of the heating capacity of the air conditioner is improved, and the comfort of indoor users is ensured.
Drawings
FIG. 1 is a schematic diagram illustrating a refrigerant pipeline structure according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the refrigerant pipeline structure in another embodiment of the air conditioner of the present invention;
FIG. 3 is a schematic diagram illustrating the structural connection of refrigerant pipes according to another embodiment of the present invention;
FIG. 4 is a schematic diagram of a hardware configuration involved in the operation of an embodiment of the air conditioning control apparatus of the present invention;
FIG. 5 is a flow chart illustrating an embodiment of a method for controlling an air conditioner according to the present invention;
FIG. 6 is a flow chart illustrating a control method of an air conditioner according to another embodiment of the present invention;
FIG. 7 is a flow chart illustrating a control method of an air conditioner according to another embodiment of the present invention;
fig. 8 is a flowchart illustrating a control method of an air conditioner according to still another embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The main solution of the embodiment of the invention is as follows: the air conditioner comprises a compressor and a bypass pipeline, wherein the compressor comprises a compression cavity with the pressure in the cavity less than or equal to a set threshold, and a throttling device is arranged on the bypass pipeline; and if the temperature parameter meets the starting condition of the power boosting operation of the compressor, controlling the throttle device to be opened so as to enable a part of refrigerant discharged by the compressor to flow through the throttle device and enter the compression cavity.
In the prior art, the power of a compressor is difficult to quickly increase when an air conditioner is started in a heating mode, so that the indoor temperature is slowly increased, and the comfort of a user is influenced.
The invention provides the solution, and aims to quickly improve the power of the compressor when the air conditioner is started to heat, so as to improve the output of the heating capacity of the air conditioner, quickly raise the indoor temperature and meet the comfort of indoor users.
The embodiment of the invention provides an air conditioner. The air conditioner can be any air conditioning equipment with a heat pump system, such as a wall-mounted air conditioner, a cabinet air conditioner, a window air conditioner and the like.
In an embodiment of the present invention, referring to fig. 1 to 3, the air conditioner includes a compressor 1, a first heat exchanger 2, an electronic expansion valve 3, and a second heat exchanger 4, wherein the compressor 1, the first heat exchanger 2, the electronic expansion valve 3, and the second heat exchanger 4 are sequentially connected by a pipeline to form a refrigerant circulation loop of the air conditioner. Wherein, the arrows in fig. 1 to 3 are the refrigerant flow direction
Wherein the compressor 1 is provided with an exhaust port and a return port. Specifically, an exhaust port of the compressor 1 is connected with a refrigerant inlet of the first heat exchanger 2, a refrigerant outlet of the first heat exchanger 2 is connected with a refrigerant inlet of the electronic expansion valve 3, a refrigerant outlet of the electronic expansion valve 3 is connected with a refrigerant inlet of the second heat exchanger 4, and a refrigerant outlet of the second heat exchanger 4 is connected with a return air port of the compressor 1.
The compressor 1 comprises at least two compression cavities, the pressure in one of the at least two compression cavities is less than or equal to a set threshold, and the pressure in the other of the at least two compression cavities is greater than the set threshold. Specifically, in the present embodiment, the compression cavities in the compressor 1 include a high pressure cavity, a middle pressure cavity and a low pressure cavity, wherein the high pressure cavity is communicated with the exhaust port, and the low pressure cavity is communicated with the return air port. The pressure in the high pressure chamber is greater than the pressure in the medium pressure chamber, which is greater than the pressure in the low pressure chamber. The compression chamber smaller than or equal to the set threshold in this embodiment may be a medium pressure chamber or a low pressure chamber.
Referring to fig. 1 to 3, the air conditioner further includes a bypass line 5, a throttling device 51 is disposed on the bypass line 5, and the bypass line 5 communicates the exhaust port with a compression chamber having a pressure less than or equal to a set threshold. Specifically, one end of the bypass line 5 is communicated with the exhaust port, and the other end of the bypass line 5 may be communicated with the medium-pressure chamber and/or the low-pressure chamber. When the throttle device 51 is opened, a part of the refrigerant flowing out of the exhaust port of the compressor 1 sequentially flows through the first heat exchanger 2, the electronic expansion valve 3 and the second heat exchanger 4 and then flows back to the compressor 1 from the return port, and the other part of the refrigerant flowing out of the exhaust port of the compressor 1 flows into the compressor 1 after throttling and pressure reduction through the throttle device 51 from the bypass pipeline 5. When the throttle 51 is closed, the refrigerant flowing out of the discharge port of the compressor 1 does not flow through the bypass line 5.
In an embodiment, referring to fig. 1 and 2, the compressor 1 is further provided with a suction port in addition to the exhaust port and the return port, the compression chambers include a first compression chamber and a second compression chamber, the pressure in the second compression chamber is smaller than the pressure in the first compression chamber, the suction port is communicated with the first compression chamber, the return port is communicated with the second compression chamber, and the bypass line 5 is communicated with the exhaust port and the suction port. The first compression chamber is specifically referred to as a medium pressure chamber, the second compression chamber is specifically referred to as a low pressure chamber, the medium pressure chamber is communicated with the suction port, and the low pressure chamber is communicated with the return port. Based on this, when the throttle device 51 is turned on, part of the refrigerant discharged from the compressor 1 may enter the middle pressure chamber, and further enter the compressor 1 after being mixed with the low temperature refrigerant sucked from the low pressure chamber by the middle pressure chamber, thereby realizing the rapid power rise of the compressor 1 in a short time when the throttle device 51 is turned on.
In another embodiment, referring to fig. 3, the air conditioner further includes a gas-liquid separator 6, the gas-liquid separator 6 is disposed between the second heat exchanger 4 and the return air port, a gas phase outlet of the gas-liquid separator 6 is connected to the return air port through a first pipeline, the return air port is communicated with the low pressure cavity, and the bypass pipeline 5 is communicated with the exhaust port and the first pipeline. Based on this, when throttling arrangement 51 opened, compressor 1 discharged some refrigerant can enter the low pressure chamber with the refrigerant that the gaseous phase export came out after mixing, improve the degree of superheat of breathing in of compressor 1 to realize that compressor 1 power rises fast in the short time when throttling arrangement 51 opened.
Specifically, the throttling device 51 is a device capable of throttling and depressurizing the refrigerant. The throttling and depressurizing effects of the throttling device 51 can be opened or closed according to actual requirements. Wherein, referring to fig. 1, the throttling device 51 may comprise an electronic expansion valve 510. Referring also to FIG. 2, throttle device 51 may also include a solenoid 511 and a capillary tube 512 in series with solenoid 511.
Further, the air conditioner may further include a temperature sensor 01. Temperature sensor 01 may be used to detect one or more of outdoor ambient temperature, exhaust temperature, heat exchanger coil temperature, etc.
Furthermore, the embodiment of the invention also provides an air conditioner control device which is applied to control the air conditioner. The air conditioner control device can be arranged in the air conditioner or be arranged outside the air conditioner independently of the air conditioner.
In an embodiment of the present invention, referring to fig. 4, an air conditioning control apparatus includes: a processor 1001 (e.g., CPU), memory 1002, etc. The memory 1002 may be a high-speed RAM memory or a non-volatile memory (e.g., a disk memory). The memory 1002 may alternatively be a storage device separate from the processor 1001.
The throttle device 51, the temperature sensor 01, the compressor 1, the electronic expansion valve 3, and the like are all connected to the processor 1001. The memory 1002 is connected to the processor 1001.
Those skilled in the art will appreciate that the configuration of the device shown in fig. 1 is not intended to be limiting of the device and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
As shown in fig. 4, an air conditioner control program may be included in the memory 1002, which is a kind of computer-readable storage medium. In the apparatus shown in fig. 4, the processor 1001 may be configured to call an air conditioner control program stored in the memory 1002 and perform operations of the steps related to the control method of the air conditioner in the following embodiments.
The embodiment of the invention also provides a control method of the air conditioner, which is applied to the air conditioner.
Referring to fig. 5, an embodiment of a control method of an air conditioner according to the present application is provided. In this embodiment, the control method of the air conditioner includes:
step S10, in the heating starting stage of the air conditioner, acquiring temperature parameters of the air conditioner under the current working condition;
the temperature parameter specifically refers to a temperature parameter representing the output capacity condition of the air conditioner during the operation process of the air conditioner, and may include an air conditioner use environment temperature parameter (such as an indoor environment temperature, an outdoor environment temperature, and the like), a set temperature parameter related to the heat exchange operation of the air conditioner (such as a target temperature of the air conditioner operation set by a user, and the like), and a temperature parameter monitored in a refrigerant circulation loop of the air conditioner (such as a compressor return air temperature, a compressor exhaust air temperature, an indoor heat exchanger coil temperature, an outdoor heat exchanger coil temperature, and/or the like).
The heating starting stage specifically refers to a stage in which the air conditioner is powered on and starts to perform heating operation, or the air conditioner starts to time when the cooling operation is switched to the heating operation, and the timing duration is less than or equal to a set duration.
Step S20, judging whether the temperature parameter meets the starting condition of the power boosting operation of the compressor;
if yes, step S30 can be executed.
And step S30, controlling the throttle device to be opened so that a part of refrigerant discharged by the compressor flows through the throttle device and enters the compression cavity.
The starting condition of the compressor power boosting operation specifically refers to a temperature characteristic parameter related to the heating operation of the air conditioner when the compressor power cannot meet the heating output capacity requirement of the air conditioner.
If the acquired temperature parameter is matched with the temperature characteristic parameter in the starting condition, the current compressor power of the air conditioner is low, and the heating output capacity of the air conditioner is poor; the obtained temperature parameter is not matched with the temperature characteristic parameter in the starting condition, and the current power of the surface compressor can enable the air conditioner to have higher heating output capacity.
When the temperature parameter meets the starting condition, the throttling device in the bypass pipeline of the compressor is started, part of the refrigerant flowing out of the exhaust port of the compressor flows into the compression cavity (middle-pressure cavity or low-pressure cavity) with lower pressure of the compressor, is mixed with the refrigerant with lower temperature in the compression cavity and is then further compressed, and the exhaust temperature of the compressor is effectively improved.
Specifically, when the throttling device comprises an electromagnetic valve and a capillary tube connected with the electromagnetic valve in series, controlling the throttling device to be opened refers to controlling the electromagnetic valve to be opened; when the throttling device comprises an electronic expansion valve, controlling the opening of the throttling device refers to controlling the electronic expansion valve to be opened to an initial opening degree. The initial opening degree may be a preset parameter or a parameter determined based on the actual demand condition of the air conditioner. For example, the initial opening may be determined based on temperature parameters (e.g., varying parameters of outdoor ambient temperature, compressor discharge temperature, and/or indoor ambient temperature, etc.).
It should be noted that, when the throttle device of the bypass line is opened in the embodiment of the present invention, the compressor is operated at a constant frequency, which may be a preset frequency or a frequency determined based on a temperature difference between an indoor ambient temperature and a set temperature.
The method for controlling the air conditioner is applied to the air conditioner which is communicated with an exhaust port of a compressor and a compression cavity with lower pressure through a bypass pipeline, wherein a throttling device is arranged in the bypass pipeline, the method obtains a temperature parameter of the air conditioner under the current working condition in the heating operation process of the air conditioner, when the temperature parameter meets the starting condition of the power increasing operation of the compressor, the current output power of the compressor is lower, at the moment, a part of refrigerant discharged by the compressor enters the compression cavity with lower pressure through the throttling device by opening the throttling device in the bypass pipeline, the exhaust of the compressor is continuously compressed after being mixed with low-temperature gas sucked by the compression cavity, the power of the compressor is quickly increased in a short time, the output of the heating capability of the air conditioner is improved, and the comfort of indoor users is ensured.
Further, referring to fig. 5, after step S20, the method further includes: if not, step S40 and step S50 can be executed.
Step S40, acquiring the maximum running frequency of the compressor; the maximum frequency is determined according to the current outdoor environment temperature, and the maximum frequency is in a decreasing trend along with the decrease of the outdoor environment temperature;
different outdoor environment temperatures have different maximum frequencies correspondingly, and specifically, the greater the outdoor environment temperature is, the greater the maximum frequency is; the smaller the outdoor ambient temperature, the smaller the maximum frequency.
And S50, controlling the compressor to operate at the maximum frequency or less.
Specifically, the compressor is controlled to operate at a frequency not greater than the maximum frequency. The actual operating frequency of the compressor may be determined based on a temperature difference between the indoor ambient temperature and the set temperature, the greater the temperature difference, the greater the corresponding actual operating frequency. If the determined operation frequency is less than the maximum frequency, operating according to the determined operation frequency; and if the determined operation frequency is greater than or equal to the maximum frequency, operating according to the maximum frequency.
In this embodiment, when the temperature parameter does not satisfy the starting condition, it indicates that the power of the current compressor is increased quickly, and the power does not need to be increased further, and the operation of the compressor is controlled based on the determined maximum frequency, so as to ensure that the compressor is reliably started and meet the heating requirement of the indoor environment.
Further, in this embodiment, when the throttling device is an electronic expansion valve, after the electronic expansion valve is opened to an initial opening degree, the current exhaust temperature of the compressor may be acquired, and if the acquired current exhaust temperature is less than an exhaust temperature threshold, the electronic expansion valve may be controlled to increase the opening degree.
The current discharge temperature of the compressor is detected by a temperature sensor provided at the discharge port of the compressor.
The discharge temperature threshold is specifically a discharge temperature of the compressor that can make the heating capacity of the air conditioner more than a certain value. The exhaust temperature threshold may be a preset parameter or a parameter determined based on an actual operation condition of the air conditioner, for example, the exhaust temperature threshold may be determined based on a temperature difference between an actual indoor ambient temperature at the time of heating start and a target temperature at which the air conditioner operates, and a maximum exhaust temperature at which reliable operation of the compressor is guaranteed. Wherein, the larger the temperature difference, the larger the corresponding exhaust temperature threshold.
Further, the increase in the opening degree of the electronic expansion valve may be performed at a set speed with a set width. In the present embodiment, in order to match the increase in the opening degree of the electronic expansion valve with the indoor heat exchange requirement, the opening degree adjustment rate of the electronic expansion valve is determined based on the indoor ambient temperature and the set temperature. Specifically, the step of controlling the opening degree of the electronic expansion valve to be increased includes: acquiring a current first indoor environment temperature and a first set temperature of the air conditioner; determining a temperature deviation between the first indoor ambient temperature and the first set temperature; determining the opening degree adjustment rate of the electronic expansion valve according to the temperature deviation; wherein the opening degree adjustment rate is increased along with the increase of the temperature deviation; and controlling the electronic expansion valve to increase the opening according to the opening adjusting rate. Specifically, the opening degree adjustment rate refers to the adjustment range of the opening degree of the electronic expansion valve per unit time. The electronic expansion valve opening degree adjusting device is suitable for controlling the opening degree adjusting rate of the electronic expansion valve by the temperature difference between the indoor environment temperature and the set temperature, is beneficial to ensuring the accuracy of the opening degree changing rate of the electronic expansion valve, and ensures that the rising of the exhaust temperature can meet the heating requirement of the indoor environment.
Further, based on the above embodiments, another embodiment of the control method of the air conditioner of the present application is provided. In this embodiment, referring to fig. 6, the step S10 includes:
step S11, when the air conditioner is started to heat, the outdoor environment temperature is obtained as the temperature parameter;
the detection of the outdoor environment temperature can be specifically detected by a temperature sensor arranged in the outdoor environment, and can also be obtained by acquiring the weather temperature information of the area where the air conditioner is located.
After step S11, the method further includes:
step S101, judging whether the outdoor environment temperature is less than or equal to a set outdoor environment temperature;
if the outdoor environment temperature is less than or equal to the set outdoor environment temperature, executing the step S01; and if the outdoor environment temperature is greater than the set outdoor environment temperature, executing the step S02.
Step S01, determining that the temperature parameter meets the starting condition;
and S02, determining that the temperature parameter does not meet the starting condition.
The outdoor environment temperature is set to be the lowest outdoor environment temperature which can enable the power increasing rate of the compressor to reach the indoor rapid heating requirement.
The outdoor environment temperature is less than or equal to the set outdoor environment temperature, the outdoor environment temperature is too low, the power increasing speed of the compressor is slow, the heating capacity of the air conditioner is low, and the heating requirement of the indoor environment cannot be met. In addition, if the outdoor environment temperature is higher than the set outdoor environment temperature, it indicates that the power of the compressor is increased faster at the current outdoor environment temperature, the heating capacity of the air conditioner is higher, and the heating requirement of the indoor environment can be met, and at this time, the operation of the compressor is controlled based on the step S40 and the step S50, so that the system can meet the rapid heating requirement of the indoor environment with higher heating energy efficiency.
Further, based on any of the above embodiments, another embodiment of the control method of the air conditioner of the present application is provided. In this embodiment, referring to fig. 7, the step S10 includes:
step S12, when the air conditioner is started to heat, acquiring the current second indoor environment temperature and the current second set temperature of the air conditioner;
the indoor environment temperature can be detected by a sensor arranged at an air return inlet of the air conditioner. The second set temperature specifically refers to a target temperature of an indoor environment required by the operation of the air conditioner, and can be obtained by obtaining user set parameters or by self-analyzing the indoor condition of the air conditioner.
Step S13, when the running time of the air conditioner reaches the set time after the heating start, acquiring the current third indoor environment temperature and the third set temperature of the air conditioner;
the set time period here may be a fixed time period set in advance, or may be a time period determined based on an actual demand situation. For example, the set time period here may be determined based on the detected temperature difference between the second indoor ambient temperature and the second set temperature at the time of the warm-up start. The larger the temperature difference is, the shorter the set time length is; the smaller the temperature difference, the longer the setting time.
The obtaining manner and definition of the third indoor ambient temperature and the third set temperature are the same as those of the second indoor ambient temperature and the second set temperature, and are not described herein again. It should be noted that the second setting temperature and the third setting temperature may be set to be the same or different values according to actual requirements of users.
Step S14, using the second indoor ambient temperature, the second set temperature, the third indoor ambient temperature, and the third set temperature as the temperature parameters.
Specifically, after the second indoor ambient temperature, the second set temperature, the third indoor ambient temperature, and the third set temperature are obtained as the temperature parameters, whether the start condition of the power boost operation of the compressor is satisfied may be analyzed based on the obtained temperature parameters.
In this embodiment, the indoor environment temperature and the set temperature of the air conditioner at the heating start time and at two different times after the heating start time are obtained as the temperature parameters, so that the influence of the actual condition of the power output of the compressor on the heating effect of the indoor environment after the heating start can be accurately represented, and whether the compressor needs to increase the power currently or not can be accurately identified based on the temperature parameters, so as to ensure the heating requirement of the indoor environment.
Specifically, based on the temperature parameters obtained in the steps S12 to S14, after the step S10, the method further includes:
step S102, determining a first temperature difference between the second indoor environment temperature and the second set temperature, and determining a second temperature difference between the third indoor environment temperature and the third set temperature;
step S103, judging whether the deviation value of the first temperature difference and the second temperature difference is less than or equal to a threshold value;
if the deviation amount of the first temperature difference and the second temperature difference is smaller than or equal to a set threshold value, executing a step S01; and if the deviation amount of the first temperature difference and the second temperature difference is larger than the set threshold value, executing step S02.
Step S01, determining that the temperature parameter meets the starting condition;
and S02, determining that the temperature parameter does not meet the starting condition.
The specific size of the set threshold may be determined based on actual conditions. For example, in the present embodiment, the set threshold is specifically 1 ℃.
The heating efficiency of the power output by the compressor to the indoor environment after heating starting can be accurately represented by the deviation value of the first temperature difference and the second temperature difference, and if the deviation value is small, the output power of the compressor after heating starting is insufficient, and the heating efficiency of the air conditioner to the indoor environment is poor; if the deviation value is large, the output power of the compressor is increased quickly after heating starting, and the heating efficiency of the air conditioner to the indoor environment is good. Based on this, whether the output power of the compressor is further improved by adopting the bypass pipeline is determined by the deviation amount of the first temperature difference and the second temperature difference, and the bypass pipeline can be ensured to be suitable for timely starting of the influence of the compressor on the heating effect of the indoor environment after the heating start, so that the power of the compressor can be further ensured to be rapidly improved, the indoor environment can be rapidly heated, and the user comfort is met.
It should be noted that step S10 may include step S11 or one of step S12 to step S14, and may also include step S11 and step S12 to step S14. When step S10 includes steps S11 to S14, step S101 may be executed after step S11, the step of acquiring the second indoor ambient temperature and the second set temperature in step S12 may be further executed if the outdoor ambient temperature is less than or equal to the set outdoor ambient temperature under the condition that the outdoor ambient temperature is satisfied, and step S13, step S14, step S102, and step S103 may be further executed.
Further, based on any of the above embodiments, a further embodiment of the control method of the air conditioner of the present application is provided. In this embodiment, referring to fig. 8, after step S30, the method further includes:
step S60, obtaining the operation parameters of the compressor;
the operating parameters are in particular characteristic parameters which characterize the operating conditions of the compressor after the throttle device in the bypass line has been opened.
The operating parameters may include, in particular, the discharge temperature, the return temperature, the operating current, the discharge-side pressure and/or the return-side pressure of the compressor, etc.
Step S70, judging whether the running parameters of the compressor meet the exit conditions of the frequency increasing operation of the compressor;
if the operating parameter of the compressor meets the exit condition of the power boosting operation of the compressor, executing step S80; and if the operating parameter of the compressor does not meet the exit condition of the power boosting operation of the compressor, controlling a throttling device to maintain an opening state or executing further operation.
And S80, controlling the throttling device to close.
The exit condition may be a parameter range of an operation parameter of the compressor when the compressor has a reliability risk, or a parameter range of an operation parameter of the compressor when the power boost of the compressor has reached a rapid temperature rise in an indoor environment.
Specifically, in this embodiment, the operation parameter includes an exhaust temperature and/or an operation current, and if the exhaust temperature is greater than or equal to a set exhaust temperature, it is determined that the exhaust temperature meets the exit condition, and/or if the operation current is less than or equal to a set current threshold, it is determined that the operation current meets the exit condition.
The set exhaust temperature is specifically the preset maximum temperature of the compressor exhaust, and the set current threshold is the preset maximum value of the compressor running current. The specific values for setting the exhaust temperature and setting the current threshold may be set based on actual requirements. For example, the exhaust gas temperature is set to 100 ℃ in the present embodiment.
Here, when the actual exhaust temperature of the compressor reaches the set exhaust temperature and/or the operating current of the compressor reaches the set current threshold, it indicates that the compressor has a reliability risk or the compressor can realize rapid temperature rise of the indoor environment without further power increase; otherwise the compressor does not present a reliability risk or needs further power boost to achieve rapid warm-up of the indoor environment.
Further, in this embodiment, if the exhaust temperature is less than the set exhaust temperature or the operating current is greater than the set current threshold, a fourth indoor ambient temperature and a fourth set temperature of the air conditioner are obtained; determining a third temperature difference between the fourth indoor ambient temperature and the fourth set temperature; and if the third temperature difference is less than or equal to a set temperature difference, determining that the operating parameters of the compressor meet the exit condition of the power boosting operation of the compressor. The second indoor ambient temperature and the second set temperature can be referred to in analogy with the above manner and definition of the fourth indoor ambient temperature and the fourth set temperature, which are not described herein again. And the third temperature difference is smaller than or equal to the set temperature difference, which indicates that the current indoor environment temperature is close to the target temperature of the indoor environment required by the air conditioner, the indoor environment temperature can currently meet the heating requirement of a user, and the bypass pipeline can be closed to ensure the heating energy efficiency of the air conditioner.
In addition, an embodiment of the present invention further provides a computer-readable storage medium, where an air-conditioning control program is stored on the computer-readable storage medium, and when the air-conditioning control program is executed by a processor, the relevant steps of any embodiment of the above method for controlling an air conditioner are implemented.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of other like elements in a process, method, article, or system comprising the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the description of the foregoing embodiments, it is clear to those skilled in the art that the method of the foregoing embodiments may be implemented by software plus a necessary general hardware platform, and certainly may also be implemented by hardware, but in many cases, the former is a better implementation. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (17)
1. The utility model provides a control method of air conditioner, characterized in that, the air conditioner includes compressor and bypass line, the compressor includes first compression chamber and second compression chamber, the compressor is equipped with gas vent, return-air inlet and induction port, the pressure in the second compression chamber is less than the pressure in the first compression chamber, the induction port with first compression chamber intercommunication, the return-air inlet with second compression chamber intercommunication, the pressure in the first compression chamber is less than or equal to the settlement threshold value, bypass line intercommunication gas vent with the induction port, bypass line is equipped with throttling arrangement, the control method of air conditioner includes:
in the heating starting stage of the air conditioner, acquiring a temperature parameter of the air conditioner under the current working condition; and
and if the temperature parameter meets the starting condition of the power boosting operation of the compressor, controlling the throttle device to be opened so as to enable a part of refrigerant discharged by the compressor to flow through the throttle device and enter the first compression cavity.
2. The method for controlling an air conditioner according to claim 1, wherein the throttling means includes a capillary tube having a solenoid valve connected in series to the solenoid valve, and the step of controlling the throttling means to be opened includes:
and controlling the electromagnetic valve to be opened.
3. The control method of an air conditioner according to claim 1, wherein said throttle device includes an electronic expansion valve, and said step of controlling the opening of said throttle device includes:
and controlling the electronic expansion valve to be opened to an initial opening degree.
4. The method of controlling an air conditioner according to claim 3, wherein the step of controlling the electronic expansion valve to be opened to an initial opening degree is followed by further comprising:
acquiring the current exhaust temperature of the compressor; and
and if the current exhaust temperature is smaller than the exhaust temperature threshold value, controlling the electronic expansion valve to increase the opening degree.
5. The control method of an air conditioner according to claim 4, wherein the step of controlling the electronic expansion valve to increase the opening degree comprises:
acquiring a current first indoor environment temperature and a first set temperature of the air conditioner;
determining a temperature deviation between the first indoor ambient temperature and the first set temperature;
determining the opening degree adjustment rate of the electronic expansion valve according to the temperature deviation; wherein the opening degree adjustment rate is increased along with the increase of the temperature deviation; and
and controlling the electronic expansion valve to increase the opening according to the opening adjusting rate.
6. The method as claimed in claim 1, wherein after the step of obtaining the temperature parameter of the air conditioner in the current working condition in the heating start stage of the air conditioner, the method further comprises:
if the temperature parameter does not meet the starting condition, acquiring the maximum running frequency of the compressor; the maximum frequency is determined according to the current outdoor environment temperature, and the maximum frequency is in a decreasing trend along with the decrease of the outdoor environment temperature; and
controlling the compressor to operate at less than or equal to the maximum frequency.
7. The method as claimed in any one of claims 1 to 6, wherein the step of obtaining the temperature parameter of the air conditioner in the current working condition in the heating start stage of the air conditioner comprises:
when the air conditioner is started to heat, acquiring the outdoor environment temperature as the temperature parameter; and
in the heating starting stage of the air conditioner, after the step of obtaining the temperature parameter of the air conditioner under the current working condition, the method further comprises the following steps:
if the outdoor environment temperature is less than or equal to the set outdoor environment temperature, determining that the temperature parameter meets the starting condition;
and if the outdoor environment temperature is greater than the set outdoor environment temperature, determining that the temperature parameter does not meet the starting condition.
8. The method as claimed in any one of claims 1 to 6, wherein the step of obtaining the temperature parameter of the air conditioner in the current working condition in the heating start stage of the air conditioner comprises:
when the air conditioner is started to heat, acquiring the current second indoor environment temperature and the current second set temperature of the air conditioner;
when the running time of the air conditioner reaches the set time after the heating start, acquiring the current third indoor environment temperature and the third set temperature of the air conditioner; and
and taking the second indoor environment temperature, the second set temperature, the third indoor environment temperature and the third set temperature as the temperature parameters.
9. The method as claimed in claim 8, wherein the step of obtaining the set temperature of the temperature parameter of the air conditioner under the current working condition as the temperature parameter in the heating start stage of the air conditioner further comprises:
determining a first temperature difference between the second indoor environment temperature and the second set temperature, and determining a second temperature difference between the third indoor environment temperature and the third set temperature;
if the deviation amount of the first temperature difference and the second temperature difference is smaller than or equal to a set threshold value, determining that the temperature parameter meets the starting condition; and
and if the deviation amount of the first temperature difference and the second temperature difference is larger than the set threshold value, determining that the temperature parameter does not meet the starting condition.
10. The method for controlling an air conditioner according to any one of claims 1 to 6, further comprising, after the step of controlling the throttle device to be turned on:
acquiring operating parameters of a compressor; and
and if the operating parameters of the compressor meet the exit condition of the power boosting operation of the compressor, controlling the throttling device to be closed.
11. The control method of an air conditioner according to claim 10, wherein the operation parameter includes a discharge temperature of the compressor, and further comprising, after the step of obtaining the operation parameter of the compressor:
if the exhaust temperature is greater than or equal to a set exhaust temperature, determining that the exhaust temperature meets the exit condition; or the like, or, alternatively,
the operation parameter includes an operation current of the compressor, and after the step of obtaining the operation parameter of the compressor, the method further includes:
and if the operating current is less than or equal to a set current threshold, determining that the operating current meets the exit condition.
12. The control method of an air conditioner according to claim 11, further comprising, after the step of obtaining the operation parameter of the compressor:
if the exhaust temperature is lower than the set exhaust temperature or the running current is higher than the set current threshold, acquiring the current fourth indoor environment temperature and the fourth set temperature of the air conditioner;
determining a third temperature difference between the fourth indoor ambient temperature and the fourth set temperature; and
and if the third temperature difference is less than or equal to the set temperature difference, determining that the operating parameter of the compressor meets the exit condition of the power boosting operation of the compressor.
13. An air conditioning control device characterized by comprising: a memory, a processor and an air conditioner control program stored on the memory and executable on the processor, the air conditioner control program when executed by the processor implementing the steps of the control method of the air conditioner according to any one of claims 1 to 12.
14. An air conditioner, characterized in that the air conditioner comprises:
the compressor comprises a first compression cavity and a second compression cavity, the compressor is provided with an exhaust port, a return air port and an air suction port, the pressure in the second compression cavity is smaller than the pressure in the first compression cavity, the air suction port is communicated with the first compression cavity, the return air port is communicated with the second compression cavity, and the pressure in the first compression cavity is smaller than or equal to a set threshold value;
the bypass pipeline is communicated with the exhaust port and the air suction port and is provided with a throttling device; and
the climate control device according to claim 13, connected to the throttling device.
15. The air conditioner according to claim 14, further comprising a gas-liquid separator, a gas phase outlet of the gas-liquid separator being connected to the return port through a first pipe, the bypass pipe communicating the exhaust port with the first pipe.
16. The air conditioner according to claim 14 or 15, wherein said throttling means comprises an electronic expansion valve; or the throttling device comprises an electromagnetic valve and a capillary tube connected in series with the electromagnetic valve.
17. A computer-readable storage medium, characterized in that an air-conditioning control program is stored thereon, which when executed by a processor, implements the steps of the control method of an air conditioner according to any one of claims 1 to 12.
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