CN115654661A - Air conditioner anti-freezing control method and air conditioner - Google Patents
Air conditioner anti-freezing control method and air conditioner Download PDFInfo
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- CN115654661A CN115654661A CN202210999483.5A CN202210999483A CN115654661A CN 115654661 A CN115654661 A CN 115654661A CN 202210999483 A CN202210999483 A CN 202210999483A CN 115654661 A CN115654661 A CN 115654661A
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- 238000007710 freezing Methods 0.000 title claims abstract description 92
- 238000000034 method Methods 0.000 title claims abstract description 59
- 108010053481 Antifreeze Proteins Proteins 0.000 claims description 6
- 230000002528 anti-freeze Effects 0.000 claims description 6
- 230000000977 initiatory effect Effects 0.000 claims description 4
- 230000009286 beneficial effect Effects 0.000 description 6
- 230000008014 freezing Effects 0.000 description 5
- 239000002699 waste material Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 230000006872 improvement Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
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Abstract
The application relates to an anti-freezing control method for an air conditioner. The method comprises the following steps: obtaining indoor ambient temperature T Ring (C) (ii) a To indoor ambient temperature T Ring (C) And a preset temperature T A Judging, controlling whether to start an anti-freezing protection mode according to the judgment result, and calculating the indoor environment temperature T Ring (C) And a predetermined temperature T A Obtaining the absolute value delta t of the temperature difference; comparing the absolute value of the temperature difference Deltat with a temperature threshold T B And controlling to start different anti-freezing protection modes according to the comparison result. The control method can start different anti-freezing protection modes according to different conditions when anti-freezing protection measures need to be executed on the air conditioner, namely, the absolute value delta T of the temperature difference is smaller than or larger than the temperature threshold T B And under different conditions, different anti-freezing protection modes are started to prevent the indoor heat exchanger of the air conditioner from frosting.
Description
Technical Field
The application relates to the technical field of air conditioning equipment, in particular to an anti-freezing control method for an air conditioner and the air conditioner.
Background
Along with the improvement of living standard of people, the requirements of people on living environment are higher and higher, so the use requirements of the air conditioner are gradually improved, and under the conditions that the outdoor environment temperature is lower and the refrigeration requirement is still met, the indoor heat exchanger of the air conditioner is easy to frost after the air conditioner runs for a long time. Therefore, in the process of cooling operation, when the temperature of the pipe of the indoor heat exchanger of the air conditioner is low, a protection measure for preventing the air conditioner from freezing needs to be executed, and the influence on the cooling effect caused by frosting of the indoor heat exchanger of the air conditioner is avoided. Although the air conditioner anti-freezing control method exists in the industry at present, the single air conditioner anti-freezing control method is mostly adopted, and different anti-freezing protection modes cannot be adopted according to different situations that the air conditioner needs to execute anti-freezing protection measures, so that excessive protection or resource waste is caused.
Therefore, there is a need for an anti-freezing control method for an air conditioner, which can start different anti-freezing protection modes for different situations when anti-freezing protection measures need to be implemented on the air conditioner.
Disclosure of Invention
In order to solve the problems in the related art, the application provides an anti-freezing control method for an air conditioner, which can start different anti-freezing protection modes to prevent an indoor heat exchanger of the air conditioner from frosting according to different conditions when anti-freezing protection measures are required to be executed on the air conditioner.
The first aspect of the present application provides a method for controlling freezing prevention of an air conditioner, which is applied to the air conditioner and includes the following steps: obtaining indoor ambient temperature T Ring(s) ；
Calculating the indoor ambient temperature T Ring(s) And a predetermined temperature T A Obtaining the absolute value delta t of the temperature difference;
comparing the absolute value of the temperature difference Deltat with a temperature threshold T B And starting different anti-freezing protection modes according to the comparison result.
In one embodiment, said calculating said indoor ambient temperature T Ring (C) And a predetermined temperature T A Before the difference comprises:
coil temperature T of indoor heat exchanger 0 For said coil temperature T 0 And a preset temperature T A Judging;
if the coil temperature T 0 Greater than a predetermined temperature T A The air conditioner continues to operate according to an initial mode;
if the coil temperature T 0 Less than a predetermined temperature T A For the indoor ambient temperature T Ring(s) And a preset temperature T A Judging, and controlling whether to start an anti-freezing protection mode according to a judgment result;
and if the anti-freezing protection mode is started, executing the next step.
In one embodiment, said comparison of said absolute value Δ T of the temperature difference with a temperature threshold T B And initiating different anti-freeze protection modes according to the comparison result comprises:
if the absolute value delta T of the temperature difference is larger than the temperature threshold value T B Then the rotating speed of the indoor fan is increased to r 0 ；
If the absolute value Δ T of the temperature difference is less than or equal to the temperature threshold T B Increasing the opening degree of the electronic expansion valve to b 0 。
In one embodiment, if the absolute value Δ T of the temperature difference is greater than a temperature threshold T B Then the rotating speed of the indoor fan is increased to r 0 Then the method comprises the following steps:
the method comprises the steps of obtaining the coil temperature T of an indoor heat exchanger after the air conditioner operates for the first time 1 Comparing said coil temperature T 1 And the preset temperature T A And controlling the rotating speed of the indoor fan according to the comparison result.
In one embodiment, said comparing said coil temperature T 1 And the preset temperature T A The controlling the rotating speed of the indoor fan according to the comparison result comprises:
if the coil temperature T 1 Is greater than the preset temperature T A The indoor fan continues to press the r 0 Running;
if the coil temperature T 1 Less than or equal to the preset temperature T A The rotating speed of the indoor fan is increased to r 1 Until the temperature of the coil pipe of the indoor heat exchanger is greater than the preset temperature T A 。
In one embodiment, if the absolute value Δ T of the temperature difference is less than or equal to a temperature threshold T B Increasing the opening degree of the electronic expansion valve to b 0 Then the method comprises the following steps:
and after the air conditioner operates for the second time, acquiring the coil temperature T of the indoor heat exchanger 2 Comparing said coil temperature T 2 And the preset temperature T A According to the comparison result, the frequency of the compressor is controlled.
In one embodiment, said comparing said coil temperature T 2 And the preset temperature T A The controlling the frequency of the compressor according to the comparison result includes:
if the coil temperature T 2 Is greater than the preset temperature T A The electronic expansion valve continues to press the b 0 Executing, the frequency of the compressor is not changed;
if the coil temperature T 2 Less than or equal to the preset temperature T A The electron expandsThe expansion valve continues to press b 0 Performing, the frequency of the compressor is reduced to f 0 。
In one embodiment, said temperature T of said coil is lower than said temperature T of said coil 2 Less than or equal to the preset temperature T A The electronic expansion valve continues to press the b 0 Performing, the frequency of the compressor is reduced to f 0 Then the method comprises the following steps:
and after the air conditioner operates for the third time, acquiring the coil temperature T of the indoor heat exchanger 3 Comparing said coil temperature T 3 And the preset temperature T A And controlling the frequency of the compressor according to the comparison result.
In one embodiment, said comparing said coil temperature T 3 And the preset temperature T A The controlling the frequency of the compressor according to the comparison result includes:
if the coil temperature T 3 Is greater than the preset temperature T A The frequency of the compressor continues to be as f 0 Running;
if the coil temperature T 2 Less than or equal to the preset temperature T A Reducing the frequency of the compressor until the temperature of the coil of the indoor heat exchanger is greater than the preset temperature T A 。
The application provides in a second aspect an air conditioner, indoor set, off-premises station, coil pipe temperature detector and controller, the off-premises station includes the compressor, the indoor set includes indoor heat exchanger and indoor fan, the controller can carry out any one of the above-mentioned air conditioner anti-freezing control method.
The technical scheme provided by the application can comprise the following beneficial effects: this application is through acquireing indoor ambient temperature T Ring (C) (ii) a And calculates the indoor ambient temperature T Ring (C) And a predetermined temperature T A Obtaining the absolute value delta t of the temperature difference; comparing the absolute value of the temperature difference Deltat with a temperature threshold T B And controlling to start different anti-freezing protection modes according to the comparison result. The control method can be used for aiming at different anti-freezing protection measures when the air conditioner needs to be executedIn the event of a temperature difference of less than or greater than a temperature threshold T, different anti-freeze protection modes are activated, i.e. by the absolute value of the temperature difference Deltat B And under different conditions, different anti-freezing protection modes are started to prevent the indoor heat exchanger of the air conditioner from frosting. Different anti-freezing protection modes can be adopted according to different conditions that the air conditioner needs to execute anti-freezing protection measures, so that excessive protection or resource waste is avoided.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The foregoing and other objects, features and advantages of the application will be apparent from the following more particular descriptions of exemplary embodiments of the application, as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the application.
Fig. 1 is a schematic flowchart illustrating an anti-freezing control method for an air conditioner according to an embodiment of the present application;
fig. 2 is a flowchart illustrating an anti-freeze control method for a second air conditioner according to an embodiment of the present application.
Detailed Description
Preferred embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present application are shown in the drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in 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.
It should be understood that although the terms "first," "second," "third," etc. may be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present application. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
Example one
Along with the improvement of living standard of people, the requirements of people on living environment are higher and higher, so the use requirements of the air conditioner are gradually improved, and under the conditions that the outdoor environment temperature is lower and the refrigeration requirement is still met, the indoor heat exchanger of the air conditioner is easy to frost after the air conditioner runs for a long time. Therefore, in the process of cooling operation, when the temperature of the pipe of the indoor heat exchanger of the air conditioner is low, a protection measure for preventing the air conditioner from freezing needs to be executed, and the influence on the cooling effect caused by frosting of the indoor heat exchanger of the air conditioner is avoided. Although the air conditioner anti-freezing control method exists in the industry at present, the air conditioner anti-freezing control method is a single air conditioner anti-freezing control method, and different anti-freezing protection modes cannot be adopted according to different conditions that the air conditioner needs to execute anti-freezing protection measures, so that excessive protection or resource waste is caused.
Therefore, there is a need for an anti-freezing control method for an air conditioner, which can start different anti-freezing protection modes for different situations when anti-freezing protection measures need to be implemented on the air conditioner.
The technical solutions of the embodiments of the present application are described in detail below with reference to the accompanying drawings.
Fig. 1 is a schematic flowchart of an anti-freezing control method for an air conditioner according to an embodiment of the present application.
See fig. 1.
S01 obtaining indoor environment temperature T Ring (C) ；
The step of detecting and acquiring the indoor environment temperature T through a temperature detector Ring(s) How to obtain the indoor ambient temperature T Ring(s) The embodiment of the present application is not limited, and may be configured to obtain a plurality of indoor environment temperatures, and obtain an average value of the indoor environment temperatures to obtain an indoor environment temperature T Ring (C) Or the temperature of any value-taking point in the indoor environment.
S02 vs. indoor ambient temperature T Ring(s) And a preset temperature T A And judging, and controlling whether to start the anti-freezing protection mode according to the judgment result.
The step is to pass the indoor environment temperature T Ring(s) And a preset temperature T A Making a judgment if the indoor environment temperature T Ring (C) Greater than a predetermined temperature T A The indoor environment temperature is higher, and further the coil temperature of the indoor heat exchanger is higher, at the moment, the indoor heat exchanger is not easy to frost, the anti-freezing protection mode does not need to be started, and if the indoor environment temperature T is higher Ring (C) Less than or equal to a predetermined temperature T A The indoor environment temperature is low, the indoor heat exchanger temperature is also low, and at this time, the anti-freezing protection mode needs to be started if the indoor heat exchanger possibly has a risk of frosting.
S03 calculating indoor environment temperature T Ring(s) And a predetermined temperature T A Obtaining the absolute value delta t of the temperature difference; the step is specifically that the controller calculates the indoor environment temperature T Ring (C) And a predetermined temperature T A And taking the absolute value of the difference to obtain the absolute value delta t of the temperature difference.
Further, when the anti-freezing protection mode needs to be started, the indoor environment temperature T is further calculated Ring (C) And a predetermined temperature T A Due to a lower indoor ambient temperature and below a predetermined temperature T A， Calculating indoor ambient temperature T Ring (C) And a predetermined temperature T A The difference value of (d) is a negative value, and therefore the absolute value of (d) is taken to obtain the absolute value of the degree difference Δ t.
S04 comparing absolute value delta T of temperature difference with temperature threshold value T B And starting different anti-freezing protection modes according to the comparison result.
Comparing the absolute value of the temperature difference Deltat with a temperature threshold T B I.e. whether the absolute value Δ T of the comparison temperature difference is greater or less than a temperature threshold value T B And starting different anti-freezing protection modes according to the comparison result.
Exemplary, temperature threshold T of the embodiments of the present application B Is 2 ℃. By presetting the temperature T A The temperature of the indoor environment can be judged, and when the anti-freezing protection mode needs to be started, the indoor environment temperature is lower and lower than the preset temperature T A Calculating the indoor ambient temperature T Ring (C) And a predetermined temperature T A Is negative, so taking its absolute value, obtaining the absolute value of the temperature difference Deltat, and comparing it with the temperature threshold T B Exemplary, temperature threshold T of the embodiments of the present application B The value is 2 ℃, namely when the indoor environment temperature T is Ring(s) The lower the temperature difference absolute value Deltat, the higher the indoor environment temperature T Ring (C) The closer to the preset temperature T A The smaller the absolute value of the temperature difference Δ t.
Illustratively, when the indoor ambient temperature T Ring (C) Below a predetermined temperature T A When the temperature difference absolute value delta t is larger than 2 ℃ when the temperature exceeds 2 ℃, the temperature of the indoor environment is too low, the temperature of the coil pipe of the indoor heat exchanger is too low, and the corresponding anti-freezing protection mode is started to prevent the coil pipe of the indoor heat exchanger from frosting due to too low temperature.
When the indoor ambient temperature T Ring (C) Below a predetermined temperature T A When the temperature is not over 2 ℃, namely the absolute value delta t of the temperature difference is less than or equal to 2, the indoor environment temperature is not too low, the temperature of the coil pipe of the indoor heat exchanger is not too low, and a corresponding anti-freezing protection mode different from the mode when the absolute value delta t of the temperature difference is more than 2 is started at the moment, so that the purposes of preventing the coil pipe of the indoor heat exchanger from frosting due to too low temperature and preventing excessive data waste or damage functions are achieved.
The beneficial effects of the embodiment of the application are as follows: this application is through acquireing indoor ambient temperature T Ring (C) (ii) a To indoor ambient temperature T Ring (C) And a preset temperature T A Making a judgment according to the judgment resultControlling whether to start an anti-freezing protection mode and calculating the indoor environment temperature T Ring(s) And a predetermined temperature T A Obtaining the absolute value delta t of the temperature difference; comparing the absolute value of the temperature difference Deltat with a temperature threshold T B And controlling to start different anti-freezing protection modes according to the comparison result. The control method can start different anti-freezing protection modes according to different conditions when anti-freezing protection measures need to be executed on the air conditioner, namely, the absolute value delta T of the temperature difference is smaller than or larger than the temperature threshold T B And under different conditions, different anti-freezing protection modes are started to prevent the indoor heat exchanger of the air conditioner from frosting. Different anti-freezing protection modes can be adopted according to different conditions that the air conditioner needs to execute anti-freezing protection measures, so that excessive protection or resource waste is avoided.
Example two
The embodiment of the application further introduces specific control steps of the anti-freezing control method of the air conditioner.
Fig. 2 is a flowchart illustrating an anti-freezing control method for an air conditioner according to an embodiment of the present application.
Fig. 2.
The method for controlling the anti-freezing of the air conditioner comprises the following steps.
S001 obtaining indoor ambient temperature T Ring (C) ；
Detecting and acquiring indoor environment temperature T through a temperature detector Ring (C) ，
S002 obtaining coil temperature T of indoor heat exchanger 0 Temperature T of counter coil 0 And a preset temperature T A Judging;
if coil temperature T 0 Greater than a predetermined temperature T A The air conditioner continues to operate according to the initial mode;
if coil temperature T 0 Less than a predetermined temperature T A If yes, executing the next step;
the method comprises the following steps of detecting and acquiring the coil temperature T of the indoor heat exchanger through a temperature detector 0 Temperature T of coil 0 Greater than a predetermined temperature T A This indicates that the coil temperature is high and there is no possibility of frost formationAt this time, the air conditioner continues to operate in the initial mode.
Temperature T of coil 0 Less than a predetermined temperature T A Indicating that the coil temperature is low and there is a potential for frost formation, the next step should be performed.
S003 vs. indoor ambient temperature T Ring (C) And a preset temperature T A And judging, and controlling whether to start the anti-freezing protection mode according to the judgment result.
S004 calculating indoor environment temperature T Ring(s) And a predetermined temperature T A Obtaining the absolute value delta t of the temperature difference; the step is specifically that the controller calculates the indoor environment temperature T Ring (C) And a predetermined temperature T A And taking the absolute value of the difference to obtain the absolute value delta t of the temperature difference.
S005 comparing absolute value delta T of temperature difference with temperature threshold T B And starting different anti-freezing protection modes according to the comparison result.
Comparing the absolute value of the temperature difference Deltat with a temperature threshold T B I.e. whether the absolute value Δ T of the comparison temperature difference is greater or less than a temperature threshold value T B And starting different anti-freezing protection modes according to the comparison result.
The beneficial effects of the embodiment of the application are that the temperature T of the coil pipe is further controlled 0 And a preset temperature T A Judging, and calculating indoor environment temperature T Ring (C) And a predetermined temperature T A Obtaining the absolute value delta t of the temperature difference; comparing the absolute value of the temperature difference Deltat with a temperature threshold T B And starting different anti-freezing protection modes according to the comparison result. More accurate judgment of coil temperature T 0 Compared with the first embodiment, the temperature condition of the coil pipe is judged only by the indoor environment temperature, and whether the indoor heat exchanger needs to be protected from freezing or not is judged more accurately.
EXAMPLE III
The first embodiment and the second embodiment describe whether an anti-freezing protection mode needs to be started in the anti-freezing control method of the air conditioner, and the embodiment of the application further provides an invention design for the anti-freezing control method of the air conditioner.
The method for controlling freezing prevention of an air conditioner according to the embodiment of the present application includes the steps of the first embodiment or the second embodiment.
Wherein the steps are as follows: comparing the absolute value of the temperature difference Deltat with a temperature threshold T B And initiating different anti-freeze protection modes according to the comparison result comprises:
if the absolute value delta T of the temperature difference is larger than the temperature threshold value T B Then the rotating speed of the indoor fan is increased to r 0 ；
If the absolute value of the temperature difference Deltat is less than or equal to the temperature threshold T B Increasing the opening degree of the electronic expansion valve to b 0 。
Further, if the absolute value Δ T of the temperature difference is greater than the temperature threshold T B Then the rotating speed of the indoor fan is increased to r 0 Then the method comprises the following steps:
the method comprises the steps of obtaining the coil temperature T of an indoor heat exchanger after the air conditioner operates for the first time 1 Comparing the coil temperature T 1 And a predetermined temperature T A And controlling the rotating speed of the indoor fan according to the comparison result.
Further, coil temperature T is compared 1 And a predetermined temperature T A The control of the rotating speed of the indoor fan according to the comparison result comprises:
if coil temperature T 1 Greater than a predetermined temperature T A The indoor fan continues to press r 0 Running;
if coil temperature T 1 Less than or equal to a predetermined temperature T A The rotating speed of the indoor fan is increased to r 1 Until the coil temperature of the indoor heat exchanger is higher than the preset temperature T A 。
The beneficial effects of the embodiment of the application are as follows: by the absolute value Δ T of the temperature difference being greater than a temperature threshold T B Then the rotating speed of the indoor fan is increased to r 0 The absolute value of the temperature difference Deltat is less than or equal to a temperature threshold T B Increasing the opening degree of the electronic expansion valve to b 0 The anti-freezing protection is carried out through different anti-freezing protection modes, namely the aim of preventing the indoor heat exchanger of the air conditioner from frosting can be achieved, and the situation that the temperature of the indoor heat exchanger is not overWhen the height is low, the excessive protection causes the excessive protection, thereby damaging the machine wasting function.
Example four
The third embodiment described above describes in detail the absolute value Δ T of the temperature difference being greater than the temperature threshold T B The embodiment of the present application will describe another anti-freezing protection mode when the absolute value Δ T of the temperature difference is less than or equal to the temperature threshold T B Freeze protection mode in time.
The method for controlling the anti-freezing of the air conditioner according to the embodiment of the present application includes the steps of the first embodiment or the second embodiment.
Wherein the steps are as follows: comparing the absolute value of the temperature difference Deltat with a temperature threshold T B And initiating different anti-freeze protection modes according to the comparison result comprises:
if the absolute value delta T of the temperature difference is larger than the temperature threshold value T B Then the rotating speed of the indoor fan is increased to r 0 ；
If the absolute value of the temperature difference Deltat is less than or equal to the temperature threshold T B Increasing the opening degree of the electronic expansion valve to b 0 。
Further, if the absolute value of the temperature difference Δ T is less than or equal to the temperature threshold T B Increasing the opening degree of the electronic expansion valve to b 0 Then the method comprises the following steps:
after the air conditioner operates for the second time, the temperature T of the coil pipe of the indoor heat exchanger is obtained 2 Comparing the coil temperature T 2 And a predetermined temperature T A According to the comparison result, the frequency of the compressor is controlled.
Further, coil temperature T is compared 2 And a predetermined temperature T A The controlling the frequency of the compressor according to the comparison result includes:
if coil temperature T 2 Greater than a predetermined temperature T A The opening degree of the electronic expansion valve is continuously pressed according to b 0 Executing, the frequency of the compressor is not changed;
if coil temperature T 2 Less than or equal to a predetermined temperature T A The opening degree of the electronic expansion valve is continuously pressed according to b 0 Is performed, the frequency of the compressor is reduced to f 0 。
Further, if the coil temperature T 2 Less than or equal to a predetermined temperature T A The electronic expansion valve continues to press b 0 Performing, the compressor frequency is reduced to f 0 Then the method comprises the following steps:
after the air conditioner operates for the third time, the temperature T of the coil pipe of the indoor heat exchanger is obtained 3 Comparing the coil temperature T 3 And a predetermined temperature T A According to the comparison result, the frequency of the compressor is controlled.
Comparing coil temperature T 3 And a predetermined temperature T A The controlling the frequency of the compressor according to the comparison result includes:
if coil temperature T 3 Greater than a predetermined temperature T A The compressor frequency continues to be at f 0 Running;
if coil temperature T 2 Less than or equal to a predetermined temperature T A Reducing the frequency of the compressor frequency until the coil temperature of the indoor heat exchanger is greater than the preset temperature T A 。
The beneficial effects of the embodiment of the application are as follows: the application is realized by that when the absolute value delta T of the temperature difference is less than or equal to the temperature threshold value T B Increasing the opening degree of the electronic expansion valve to b 0 And further, the compressor is matched to complete anti-freezing protection measures, so that the accuracy of anti-freezing protection is improved.
EXAMPLE five
In addition to the above anti-freezing control method for the air conditioner, the present application also provides an air conditioner capable of executing the anti-freezing control method for the air conditioner, where the air conditioner includes an indoor unit, an outdoor unit, temperature detectors, a controller, and an electronic expansion valve, where the specifications and numbers of the temperature detectors are not limited in the embodiments of the present application, and the temperature detectors are used to detect the indoor ambient temperature and the coil temperature of the indoor heat exchanger. The outdoor unit comprises a compressor, the indoor unit comprises an indoor heat exchanger and an indoor fan, the controller is used for executing each step of the anti-freezing control method of the air conditioner, and the controller can execute the anti-freezing control method of the air conditioner mentioned in the embodiment. The air conditioner has the beneficial effects mentioned in the above embodiments, the derivation process is the same as the above embodiments, and the embodiments of the present application are not described again.
The foregoing description of the embodiments of the present application has been presented for purposes of illustration and description and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (10)
1. An anti-freezing control method of an air conditioner is applied to the air conditioner and is characterized in that: the method comprises the following steps:
obtaining indoor ambient temperature T Ring (C) ；
Calculating the indoor ambient temperature T Ring (C) And a predetermined temperature T A Obtaining the absolute value delta t of the temperature difference;
comparing the absolute value of the temperature difference Deltat with a temperature threshold T B And starting different anti-freezing protection modes according to the comparison result.
2. The air conditioner anti-freezing control method according to claim 1, wherein:
calculating the indoor ambient temperature T Ring(s) And a predetermined temperature T A Before the difference comprises:
coil temperature T of indoor heat exchanger 0 To the coil temperature T 0 And a preset temperature T A Judging;
if the coil temperature T 0 Greater than a predetermined temperature T A The air conditioner continues to operate according to an initial mode;
if the coil temperature T 0 Less than a predetermined temperature T A For the indoor ambient temperature T Ring (C) And a preset temperature T A Judging, and controlling whether to start or not according to the judgment resultA dynamic anti-freezing protection mode;
and if the anti-freezing protection mode is started, executing the next step.
3. The air conditioner anti-freezing control method according to claim 1, wherein:
comparing the absolute value Δ T of the temperature difference with a temperature threshold T B And initiating different anti-freeze protection modes according to the comparison result comprises:
if the absolute value delta T of the temperature difference is larger than the temperature threshold value T B Then the rotating speed of the indoor fan is increased to r 0 ；
If the absolute value Δ T of the temperature difference is less than or equal to the temperature threshold T B Increasing the opening degree of the electronic expansion valve to b 0 。
4. The air conditioner anti-freezing control method according to claim 3, wherein:
if the absolute value delta T of the temperature difference is larger than the temperature threshold value T B Then the rotating speed of the indoor fan is increased to r 0 Then the method comprises the following steps:
the method comprises the steps of obtaining the coil temperature T of an indoor heat exchanger after the air conditioner operates for the first time 1 Comparing said coil temperature T 1 And the preset temperature T A And controlling the rotating speed of the indoor fan according to the comparison result.
5. The air conditioner anti-freezing control method according to claim 4, wherein:
said comparing said coil temperature T 1 And the preset temperature T A The controlling the rotating speed of the indoor fan according to the comparison result comprises:
if the coil temperature T 1 Is greater than the preset temperature T A The indoor fan continues to press the r 0 Running;
if the coil temperature T 1 Less than or equal to the preset temperature T A The rotating speed of the indoor fan is increased to r 1 Until the temperature of the coil pipe of the indoor heat exchanger is greater than the preset temperature T A 。
6. The air conditioner anti-freezing control method according to claim 3, wherein:
if the absolute value delta T of the temperature difference is less than or equal to the temperature threshold value T B Increasing the opening degree of the electronic expansion valve to b 0 Then the method comprises the following steps:
and after the air conditioner operates for the second time, acquiring the coil temperature T of the indoor heat exchanger 2 Comparing said coil temperature T 2 And the preset temperature T A According to the comparison result, the frequency of the compressor is controlled.
7. The air conditioner anti-freezing control method according to claim 6, wherein:
said comparing said coil temperature T 2 And the preset temperature T A The controlling the frequency of the compressor according to the comparison result includes:
if the coil temperature T 2 Is greater than the preset temperature T A The electronic expansion valve continues to press the b 0 Executing, the frequency of the compressor is not changed;
if the coil temperature T 2 Less than or equal to the preset temperature T A The electronic expansion valve continues to press the b 0 Performing, the frequency of the compressor is reduced to f 0 。
8. The air conditioner anti-freezing control method according to claim 7, wherein:
if the coil temperature T 2 Less than or equal to the preset temperature T A The electronic expansion valve continues to press the b 0 Performing, the frequency of the compressor is reduced to f 0 Then the method comprises the following steps:
and after the air conditioner operates for the third time, acquiring the coil temperature T of the indoor heat exchanger 3 Comparing said coil temperature T 3 And the preset temperature T A And controlling the frequency of the compressor according to the comparison result.
9. The air conditioner anti-freezing control method according to claim 8, wherein:
said comparing said coil temperature T 3 And the preset temperature T A The controlling the frequency of the compressor according to the comparison result includes:
if the coil temperature T 3 Is greater than the preset temperature T A The frequency of the compressor continues to be as f 0 Running;
if the coil temperature T 2 Less than or equal to the preset temperature T A Reducing the frequency of the compressor until the temperature of the coil of the indoor heat exchanger is greater than the preset temperature T A 。
10. An air conditioner, characterized in that: the air conditioner comprises an indoor unit, an outdoor unit, a temperature detector, a controller and an electronic expansion valve, wherein the outdoor unit comprises a compressor, the indoor unit comprises an indoor heat exchanger and an indoor fan, and the controller can execute the anti-freezing control method of the air conditioner according to any one of claims 1-9.
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