CN110094854B - Sterilization method for indoor unit of air conditioner and sterilization air conditioner - Google Patents
Sterilization method for indoor unit of air conditioner and sterilization air conditioner Download PDFInfo
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- CN110094854B CN110094854B CN201810094761.6A CN201810094761A CN110094854B CN 110094854 B CN110094854 B CN 110094854B CN 201810094761 A CN201810094761 A CN 201810094761A CN 110094854 B CN110094854 B CN 110094854B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/10—Pressure
- F24F2140/12—Heat-exchange fluid pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
Abstract
The invention discloses a sterilization method of an air conditioner indoor unit and a sterilization air conditioner, and belongs to the technical field of air conditioners. The method comprises the following steps: and controlling and adjusting the actual condensing temperature according to the first temperature difference between the actual condensing temperature and the first set temperature and the actual condensing pressure. The heat that the refrigerant gived off in the condensation process is transmitted to the indoor set through indoor heat exchanger's coil pipe, controls the actual condensing temperature of refrigerant, just is equivalent to controlling the temperature of indoor source that generates heat. The higher the actual condensing pressure of the refrigerant is, the higher the maximum condensing temperature of the actual condensing temperature of the refrigerant is, and the higher the first temperature is. The sterilization method in the embodiment fully considers the influence of the first temperature and the actual condensation pressure on the sterilization temperature, and is specially used for controlling the sterilization temperature of the sterilization air conditioner, so that the air conditioner can be stably in a sterilization operation mode, and a better sterilization effect is realized.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a sterilization method of an air conditioner indoor unit and a sterilization air conditioner.
Background
The air conditioner creates a comfortable environment and brings various indoor pollutions, and especially the microbial pollution needs to be focused. Due to the characteristics of an air conditioning system and the problems of the air conditioner, a large amount of condensed water is generated during the operation of the air conditioner, a humid environment is formed in the air conditioner, various microorganisms are easy to attach, and the microorganisms are easy to propagate in a large amount in the environment to generate pathogenic bacteria and harmful metabolites and are spread indoors along with air flow to cause secondary pollution. Causing great harm to people working or studying indoors for a long time.
The air conditioner is mainly used for adjusting the room temperature in a normal heating mode, and correspondingly, the purpose of a normal temperature control method is to control the room temperature within a preset range. However, the temperature control method of the air conditioner using high temperature sterilization aims to form a high temperature sterilization environment in the indoor unit. The conventional temperature control method is not suitable for a high-temperature sterilization air conditioner.
Disclosure of Invention
The embodiment of the invention provides a sterilization method of an air conditioner indoor unit and a sterilization air conditioner, and aims to solve the problem of sterilization temperature control of a high-temperature sterilization air conditioner in a sterilization process.
The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview and is intended to neither identify key/critical elements nor delineate the scope of such embodiments. Its sole purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is presented later.
According to a first aspect of the embodiments of the present invention, there is provided a sterilization method for an indoor unit of an air conditioner, including:
acquiring the actual condensation temperature of a refrigerant in the indoor heat exchanger during condensation;
judging whether the actual condensation temperature reaches a first set temperature or not;
if not, acquiring a first temperature difference between the actual condensation temperature and the first set temperature;
acquiring actual condensing pressure of a refrigerant in the indoor heat exchanger during condensation;
and adjusting the actual condensation temperature of the refrigerant in the indoor heat exchanger during condensation according to the first temperature difference and the actual condensation pressure.
The required sterilization temperature of air conditioner in the sterilization process is higher than the temperature that the air conditioner ran under normal mode of refrigerating/the mode of heating far away, and the heat that the refrigerant gived off in the condensation process is transmitted to the indoor set through indoor heat exchanger's coil pipe, controls the actual condensation temperature of refrigerant, just is equivalent to controlling the temperature of the indoor source that generates heat. The higher the actual condensing pressure of the refrigerant is, the higher the maximum condensing temperature of the actual condensing temperature of the refrigerant is, and the higher the first temperature is. The sterilization method in the embodiment fully considers the influence of the actual condensation temperature and the actual condensation pressure on the sterilization temperature, and is specially used for controlling the sterilization temperature of the sterilization air conditioner, so that the air conditioner can be stably in a sterilization operation mode, and a better sterilization effect is realized.
In an alternative embodiment, the actual condensing pressure is lower than the upper condensing pressure.
In an optional embodiment, the determining whether the actual condensing temperature reaches the first set temperature further includes:
if so, recording the first time lasting after the actual condensation temperature reaches the first set temperature;
judging whether the first time reaches a first set time;
if not, the air conditioner continues to operate in a state that the actual condensation temperature reaches the first set temperature.
In an optional embodiment, after determining whether the first time reaches the first set time, before the air conditioner continues to operate in a state where the actual condensing temperature reaches the first set temperature, the method further includes:
acquiring a first relative humidity of air inside an indoor unit;
judging whether the first relative humidity is smaller than a first set relative humidity or not;
and if so, exiting the sterilization operation mode.
In an optional embodiment, the adjusting an actual condensing temperature of the refrigerant in the indoor heat exchanger during condensing according to the first temperature difference and the actual condensing pressure includes:
and adjusting the working frequency of the air-conditioning compressor or adjusting the opening of the throttling device according to the first temperature difference or the actual condensation pressure.
According to a second aspect of embodiments of the present invention, there is provided a sterilizing air conditioner including:
the first temperature acquisition module is used for acquiring the actual condensation temperature of the refrigerant of the indoor heat exchanger during condensation;
the first judgment module is used for judging whether the actual condensation temperature reaches a first set temperature or not;
the calculation processing module is used for acquiring a first temperature difference between the actual condensation temperature and a first set temperature when the actual condensation temperature does not reach the first set temperature;
the first pressure acquisition module is used for acquiring the actual condensation pressure of the refrigerant in the indoor heat exchanger during condensation;
and the execution module is used for adjusting the actual condensation temperature of the refrigerant of the indoor heat exchanger during condensation according to the first temperature difference and the actual condensation pressure.
In an alternative embodiment, the actual condensing pressure is lower than the upper condensing pressure.
In an optional embodiment, the method further comprises:
the timing module is used for recording first time lasting after the actual condensation temperature reaches a first set temperature under the condition that the actual condensation temperature reaches the first set temperature;
the second judgment module is used for judging whether the first time reaches a first set time;
and the execution module is also used for controlling the air conditioner to continuously run in a state that the first temperature reaches the first set temperature under the condition that the first time does not reach the first set time.
In an optional embodiment, the method further comprises:
the first humidity acquisition module is used for acquiring first relative humidity of indoor internal air;
the third judgment module is used for judging whether the first relative humidity is smaller than a first set relative humidity or not;
and the execution module is also used for exiting the sterilization operation mode.
In an optional embodiment, the execution module is further configured to adjust an operating frequency of an air conditioner compressor or adjust an opening degree of an air conditioner throttling device according to the first temperature difference or the actual condensing pressure.
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 invention, as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic flow chart illustrating a method for sterilizing an indoor unit of an air conditioner according to an exemplary embodiment;
fig. 2 is a schematic flow chart illustrating a method for sterilizing an indoor unit of an air conditioner according to an exemplary embodiment;
fig. 3 is a flowchart illustrating a method for sterilizing an indoor unit of an air conditioner according to an exemplary embodiment.
Detailed Description
The following description and the drawings sufficiently illustrate specific embodiments of the invention to enable those skilled in the art to practice them. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The scope of embodiments of the invention encompasses the full ambit of the claims, as well as all available equivalents of the claims. Embodiments may be referred to herein, individually or collectively, by the term "invention" merely for convenience and without intending to voluntarily limit the scope of this application to any single invention or inventive concept if more than one is in fact disclosed. Herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed. The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. For the structures, products and the like disclosed by the embodiments, the description is relatively simple because the structures, the products and the like correspond to the parts disclosed by the embodiments, and the relevant parts can be just described by referring to the method part.
According to a first aspect of an embodiment of the present invention, there is provided a method for sterilizing an indoor unit of an air conditioner, as shown in fig. 1, including:
s101, acquiring an actual condensation temperature of a refrigerant in the indoor heat exchanger during condensation;
s102, judging whether the actual condensation temperature reaches a first set temperature or not; if not, executing step S103;
s103, acquiring a first temperature difference between the actual condensation temperature and a first set temperature;
s104, acquiring actual condensing pressure of a refrigerant in the indoor heat exchanger during condensation;
and S105, adjusting the actual condensation temperature of the refrigerant in the heat exchanger during condensation according to the first temperature difference and the actual condensation pressure.
The sterilization method in the embodiment is specially used for controlling the sterilization temperature of the sterilization air conditioner, and the sterilization temperature of the sterilization air conditioner can be controlled in a targeted manner, so that the air conditioner can stably work in a sterilization operation mode, and a better sterilization effect can be realized.
Conventionally, an air conditioner is used for adjusting indoor temperature, and the control of the temperature of the air conditioner is usually the control of the air outlet temperature or the indoor temperature of the air conditioner. When the air conditioner works in the sterilization operation mode, the temperature inside the air conditioner indoor unit needs to be ensured to reach the preset sterilization temperature so as to form a sterilization environment, and the air conditioner indoor unit can be effectively sterilized.
In this embodiment, when controlling the temperature, the control variable is an actual condensing temperature of the refrigerant in the indoor heat exchanger during condensation. The heat that the refrigerant gived off in the condensation process is transmitted to the indoor set through indoor heat exchanger's coil pipe, controls the actual condensing temperature of refrigerant, just is equivalent to controlling the temperature of indoor source that generates heat. The required sterilization temperature of the air conditioner in the sterilization process is far higher than the temperature of the air conditioner in the normal refrigeration mode/heating mode, and according to the second law of thermodynamics, heat can only be spontaneously transferred from a high-temperature object to a low-temperature object, that is, if the actual temperature of a refrigerant in condensation does not reach the first set temperature, the temperature of an indoor unit of the air conditioner can never reach the preset sterilization temperature required by the sterilization environment. Therefore, only the actual condensation temperature of the refrigerant in the indoor heat exchanger during condensation is controlled, the actual condensation temperature is not lower than the first set temperature, the internal temperature of the indoor air conditioner can reach the preset sterilization temperature, an effective sterilization environment can be formed, and the indoor air conditioner can be effectively sterilized. The actual condensing temperature of the refrigerant has a maximum condensing temperature, which is limited by the actual condensing pressure: the higher the actual condensing pressure, the higher the maximum condensing temperature; the lower the actual condensing pressure, the lower the maximum condensing temperature. Therefore, if the temperature inside the indoor unit reaches the preset sterilizing temperature, the actual condensing temperature of the refrigerant is required to be higher than the first preset temperature, and the maximum condensing temperature of the refrigerant is required to be higher than the first preset temperature, so that the actual condensing pressure of the refrigerant is required to be kept at a higher level. The sterilization method in the embodiment fully considers the influence of the actual condensation temperature and the actual condensation pressure on the sterilization temperature, and is specially used for controlling the sterilization temperature of the sterilization air conditioner, so that the air conditioner can work in a sterilization operation mode, and a better sterilization effect is realized.
In an alternative embodiment, the actual condensing temperature is an actual condensing temperature of a middle section of the indoor heat exchanger. The actual condensation temperature of the middle section of the indoor heat exchanger can reflect the average condensation temperature of the indoor heat exchanger most accurately. The inlet temperature of the indoor heat exchanger is far higher than the middle section temperature of the indoor heat exchanger, and the outlet temperature of the indoor heat exchanger is slightly lower than the middle section temperature of the indoor heat exchanger, so that the middle section temperature of the indoor heat exchanger can reflect the average temperature of the indoor heat exchanger on the whole. Therefore, the actual condensation temperature of the middle section of the indoor heat exchanger is controlled, and the temperature of the indoor unit can be controlled more accurately.
In an alternative embodiment, the actual condensing pressure is lower than the upper condensing pressure. The upper limit condensing pressure in this embodiment is the maximum condensing pressure of the refrigerant that can be provided by the air conditioning compressor of the existing configuration, and if the refrigerant pressure during condensation exceeds the upper limit condensing pressure, the air conditioning compressor is easily damaged, and the service life of the compressor is reduced.
The upper limit condensing pressure of different types of refrigerants is different. For example, the upper limit condensation pressure of refrigerant R22 in the air conditioner is 3.18MPa, and the upper limit condensation pressure of refrigerant R410A in the air conditioner is 4.5 MPa.
Table 1 shows a thermodynamic property table of refrigerant R22 for saturated liquid and vapor, and it can be known by looking up the thermodynamic property table of refrigerant R22 that refrigerant R22 has a saturation temperature of 73 ℃ under a pressure of 3.18 MPa; table 2 shows thermodynamic property tables of saturated liquid and vapor of refrigerant R410A, and it can be seen from examining the thermodynamic property table of refrigerant R410A that refrigerant R410A has a saturation temperature of 68 ℃ under a pressure of 4.5 MPa. The saturation temperature is the state that the steam and the liquid are in dynamic balance, and is applied to the indoor heat exchanger, and the saturation temperature is the highest condensation temperature of the refrigerant under the absolute pressure.
TABLE 1
TABLE 2
Regarding the first set temperature in step S102, when the actual condensation temperature of the refrigerant in the indoor heat exchanger reaches the first set temperature, the heat dissipated by the refrigerant may heat the temperature inside the indoor unit to the temperature required by the sterilization environment, and optionally, the value range of the first set temperature is 62 ℃ to 69 ℃.
The first set temperature is lower than the highest saturation temperature of the refrigerant which can be provided by the air conditioner in the prior configuration, the actual condensation temperature always fluctuates above and below the first set temperature in the process of adjusting the actual condensation temperature, and the first set temperature is lower than the highest saturation temperature of the refrigerant which can be provided by the air conditioner, so that the actual condensation temperature cannot exceed the highest saturation temperature of the refrigerant which can be provided by the air conditioner in the prior configuration in the process of fluctuating above and below the actual condensation temperature. Namely, the sterilization method in the embodiment can be realized on the basis of the existing configuration of the air conditioner, and no additional device is needed to be added, or special air conditioner components such as a compressor and a heat exchanger are adopted, so that the production cost of the sterilization air conditioner is controlled, and the market competitiveness is improved. Furthermore, in the process that the temperature of the indoor unit of the air conditioner reaches the preset sterilization temperature, the air conditioner always works in the normal working range, and the service life of the air conditioner is prolonged.
The heat dissipated by the refrigerant is transferred to the surface of the indoor heat exchanger from the interior of the indoor heat exchanger, heat loss can occur, and optionally, the difference between the actual condensation temperature and the surface temperature of the indoor heat exchanger is set to be 6-7 ℃. In practical application, the temperature difference between the actual condensation temperature and the surface of the indoor heat exchanger needs to be measured according to actual conditions. The first set temperature is 6-7 ℃ higher than the preset sterilization temperature. Optionally, the preset sterilization temperature value range is as follows: 55-62 ℃.
Common microorganisms all have an optimum growth temperature range, a growth temperature limit and a thermal death temperature. After the ambient temperature exceeds the growth temperature limit of the bacteria, the bacteria stop growing or even die. For example: the optimal growth temperature range of the mould is 25-30 ℃, and the growth temperature limit is 15-37 ℃; the optimal growth temperature range of the microzyme is 20-28 ℃, and the growth temperature limit is 10-35 ℃; the optimal growth temperature range of the microzyme is 35-40 ℃, and the growth temperature limit is 5-45 ℃. When the temperature of the environment where the microorganism is located exceeds the optimal growth range and is still within the growth temperature limit, the growth speed of the microorganism is slowed down. When the temperature of the environment where the microorganism is located exceeds the growth temperature limit, proteins, nucleic acids and the like constituting the cell are easily damaged, the cell function is reduced, and if the microorganism is located in the environment at a temperature outside the growth temperature limit for a long time, the cell constituting the microorganism is easily irreversibly damaged until the cell dies, and the microorganism dies. The preset sterilization temperature in this embodiment exceeds the upper limit of the growth temperature limit of most microorganisms, and is the thermal death temperature of most temperatures at which cells constituting the microorganisms are susceptible to irreversible destruction until the cells die and the microorganisms die.
In an alternative embodiment, the step S102 of determining whether the actual condensing temperature reaches the first set temperature further includes:
if so, recording the first time lasting after the actual condensation temperature reaches the first set temperature;
judging whether the first time reaches a first set time;
if not, the air conditioner continues to operate in a state that the actual condensation temperature reaches the first set temperature.
When the environmental temperature reaches the thermal death temperature, the microorganisms die, and the death rate of the microorganisms becomes high along with the increase of time. Actual condensing temperature reaches first settlement temperature, the temperature on indoor heat exchanger surface reaches and predetermines sterilization temperature simultaneously, actual condensing temperature is at the very first time that first settlement temperature lasts, the very first time that sterilization temperature lasts is predetermine to the temperature on indoor heat exchanger surface promptly, the very first time that the environment that disinfects lasts promptly, after the very first time that maintains the environment that disinfects in the air conditioning reaches first settlement time, can kill most pathogenic bacteria and non-pathogenic bacteria, the air conditioner can withdraw from the operational mode that disinfects.
As shown in fig. 2, an optional implementation manner of this embodiment is:
s201, acquiring an actual condensation temperature of a refrigerant in the indoor heat exchanger during condensation;
s202, judging whether the actual condensation temperature reaches a first set temperature or not; if yes, go to step S203; if not, go to step S206;
s203, recording the first time lasting after the actual condensation temperature reaches the first set temperature;
s204, judging whether the first time reaches a first set time; if yes, go to step S209; if not, go to step S205;
s205, the air conditioner continues to operate in a state that the actual condensation temperature reaches the first set temperature, and step S203 is executed;
s206, acquiring a first temperature difference between the actual condensation temperature and a first set temperature;
s207, acquiring actual condensing pressure of a refrigerant in the indoor heat exchanger during condensation;
s208, adjusting the actual condensation temperature of the refrigerant in the indoor heat exchanger according to the first temperature difference and the actual condensation pressure, and executing the step S201;
and S209, exiting the sterilization operation mode.
In the step S204, the first setting time is optionally a value range of the first setting time: 20min to 50 min.
The larger the first set temperature in the step S202 is, the faster the rate of microorganism death of the indoor unit of the air conditioner is, and the smaller the first set time in the step S204 is; the smaller the first set temperature, the slower the sterilization rate, and the longer the first set time. For example, when the first set temperature is 66 ℃, the temperature of the obtainable sterilization environment is about 59 ℃, and the first set time is 30 min; then, if the first set temperature is 63 ℃, the temperature of the available sterilization environment is about 56 ℃, and the first set time is more than 30min, optionally, the first set time may be selected to be 30min to 35min, and if the first set temperature is 69 ℃, the temperature of the available sterilization environment is about 62 ℃, optionally, the first set time is 25min to 30 min. It is to be understood that the specific values of the first set temperature and the first set time are only exemplary, and the relationship between the first set temperature and the first set time is not limited to the above.
The first set temperature in step S202 and the first set time in step S204 constitute a sterilization condition, in which most of microorganisms such as pathogenic bacteria and mold fungi are dead, and the sterilization effect on the indoor unit of the air conditioner is achieved.
Preferably, the preset sterilization temperature is 55-60 ℃. The first set temperature is 62-67 deg.c.
Preferably, the first set time is 30 min. On the one hand, the air conditioner can be effectively sterilized, and on the other hand, the air conditioner can be quickly sterilized.
The first set time and the first set temperature both form a sterilization condition, and the first set time itself is also an exit condition of the air conditioner in the sterilization operation mode. And when the first time lasting after the first temperature reaches the first set time, the air conditioner exits the sterilization operation mode. The exit condition is a time condition.
After the air conditioner operates in a refrigerating mode, condensed water is attached to the surface of the indoor heat exchanger and the interior of the indoor unit, and bacteria are easily generated. During the high-temperature sterilization process of the air conditioner, the generated high temperature dries condensed water attached to the surface of the indoor heat exchanger and the inside of the indoor unit of the air conditioner, so that secondary pollution of the air conditioner is prevented.
In an alternative embodiment, after the step S204 determines whether the first time reaches the first set time, and before the step S205 continues to operate in a state where the actual condensing temperature reaches the first set temperature, the method further includes:
acquiring a first relative humidity of air inside an indoor unit;
judging whether the first relative humidity is smaller than a first set relative humidity or not;
if yes, the sterilization operation mode is exited.
The embodiment provides an exit condition of the air conditioner sterilization operation mode, if the first relative humidity is less than the first set relative humidity, the air conditioner exits the sterilization operation mode, and the exit condition of the sterilization operation mode is a humidity condition.
Optionally, the first set relative humidity is 8%. And in the case that the relative humidity is lower than 8%, the sterilization operation mode is exited. After the air conditioner exits the sterilization operation mode, the air conditioner operates in a conventional mode, and the relative humidity of the air inside the indoor unit still has an inhibition effect on bacteria. After the air conditioner exits the sterilization operation mode, in the process that the first temperature in the indoor heat exchanger is gradually reduced from the temperature required by the sterilization environment to the normal temperature, the relative humidity of the air in the indoor unit is continuously increased, for example, the first temperature on the surface of the indoor heat exchanger is 60 ℃, and the first relative humidity is 8%; at a first temperature of 26 c, the first relative humidity is 45%, which still has the effect of inhibiting bacterial growth.
As shown in fig. 3, an optional implementation manner of the sterilization method in this embodiment is as follows:
s301, acquiring the actual condensation temperature of a refrigerant in the indoor heat exchanger during condensation;
s302, judging whether the actual condensation temperature reaches a first set temperature or not; if yes, go to step S303; if not, go to step S308;
s303, recording the first time lasting after the actual condensation temperature reaches the first set temperature;
s304, judging whether the first time reaches a first set time; if yes, go to step S3011; if not, go to step S305;
s305, acquiring a first relative humidity of air inside the indoor unit;
s306, judging whether the first relative humidity is smaller than a first set relative humidity or not; if yes, go to step S3011; if not, go to step S307;
s307, the air conditioner continues to operate in a state that the actual condensation temperature reaches the first set temperature, and step S303 is executed;
s308, acquiring a first temperature difference between the actual condensation temperature and a first set temperature;
s309, acquiring the actual condensing pressure of the refrigerant in the indoor heat exchanger during condensation;
s3010, adjusting the actual condensation temperature of the refrigerant in the indoor heat exchanger according to the first temperature difference, and executing the step S301;
and S3011, exiting the sterilization operation mode.
Among the above steps of the sterilization method, the most effective sterilization environment is described, and the step of the air conditioner exiting the sterilization operation mode is described. In an alternative embodiment, before step S101, or step S201, or step S301, the method further includes determining whether the air conditioner enters the sterilization operation mode. And if the air conditioner meets the condition of entering the sterilization operation mode, the air conditioner enters the sterilization operation mode.
The conditions for the optional air conditioner to enter the sterilization operation mode are as follows: the air conditioner enters a sterilization operation mode before being turned off every time. For example, in an office, a user presses a key for closing an air conditioner after leaving work, but the air conditioner is not immediately closed but enters a sterilization operation mode, at this time, the user does not need to watch, and after sterilization is finished, the air conditioner is automatically closed. When a user needs the air conditioner to adjust the indoor temperature, the air conditioner does not enter a sterilization operation mode, so that the interference to the indoor temperature is avoided; when the user does not pay attention to the indoor temperature, the sterilization operation mode is entered, the influence on the indoor temperature paid attention to by the user is reduced, and the user experience is improved.
The conditions for the optional air conditioner to enter the sterilization operation mode are as follows:
acquiring a second relative humidity of the indoor environment;
judging whether the second relative humidity is higher than a second set relative humidity;
if yes, the air conditioner enters a sterilization operation mode before being shut down every time;
if not, the running time or the running times of the air conditioner are counted, and the air conditioner enters a sterilization running mode according to the counting result.
For example, a sterilization operation mode for operating once every 3 days, a sterilization operation mode for operating the air conditioner once every 10 times of turning on and off, etc. Optionally, the second set relative humidity in this embodiment is 65% or more. When the air humidity is higher than 65%, the germs propagate and breed fast, and the health of the user is threatened, and under the condition, the sterilization operation mode is started to protect the health of the user. Preferably, the second set relative humidity is 65%. The environment which is easy to breed bacteria is destroyed in time, and the inhibition effect on the bacteria is enhanced.
A condition for optional air conditioner to enter into sterilization operation mode is applied to the air conditioner with self-cleaning function: and when the air conditioner executes the self-cleaning function, the air conditioner simultaneously enters a sterilization running mode. Dust removal and sterilization are carried out simultaneously, the sterilization effect is better, and the effect of preventing secondary pollution is better.
In step S3010, adjusting the actual condensing temperature of the refrigerant in the indoor heat exchanger according to the first temperature difference includes increasing the actual condensing temperature and decreasing the actual condensing temperature. When the air conditioner just enters the sterilization operation mode, the actual condensation temperature is lower than the first set temperature, and at this time, the actual condensation temperature needs to be increased. After actual condensing temperature reaches first settlement temperature, need keep actual condensing temperature at first settlement temperature, at the in-process of controlling actual condensation value, actual condensing temperature often fluctuates about first settlement temperature, needs improve actual condensing temperature or reduce actual condensing temperature according to actual conditions this moment: if the actual condensation temperature is lower than the first set temperature, the actual condensation temperature needs to be increased; if the actual condensing temperature is greater than the first set temperature, the actual condensing temperature needs to be decreased. It should be understood that, in the actual control of the sterilizing temperature of the sterilizing air conditioner, the actual condensing temperature reaches the first set temperature, meaning that the absolute value of the first temperature difference is less than the set dead zone. Optionally, the adjusting dead zone is 0-1 ℃.
Adjusting the actual condensing temperature of the refrigerant in the indoor heat exchanger according to the first temperature difference includes increasing the actual condensing temperature and decreasing the actual condensing temperature, that is, decreasing the first temperature difference in step S308.
The saturation temperature at a given pressure is the highest temperature that can be reached by the actual condensation temperature of the refrigerant. When the actual condensing temperature of the refrigerant is lower than the saturation temperature, the refrigerant condenses to release heat, the temperature of the refrigerant rises, and the refrigerant does not condense any more until the actual condensing temperature of the refrigerant exceeds the saturation temperature. The actual condensation temperature of the refrigerant can be adjusted by adjusting the saturation temperature.
Factors influencing the saturation temperature include the working frequency of the air conditioner compressor and the opening degree of the air conditioner throttling device. Under the condition that other conditions are not changed, the higher the working frequency of the air-conditioning compressor is, the higher the saturation temperature is, and the lower the working frequency of the air-conditioning compressor is, the lower the saturation temperature is; under other conditions, the smaller the opening degree of the air conditioner throttling device is, the higher the saturation temperature is, and the larger the opening degree of the air conditioner throttling device is, the lower the saturation temperature is.
In an alternative embodiment, adjusting an actual condensing temperature of the refrigerant in the heat exchanger during condensing according to the first temperature difference and the actual condensing pressure includes:
and adjusting the working frequency of the air-conditioning compressor or adjusting the opening of the air-conditioning throttling device according to the first temperature difference or the actual condensation pressure.
The aim of adjusting the actual condensation temperature of the refrigerant in the indoor heat exchanger of the air conditioner is achieved by adjusting the working frequency of the air conditioner compressor or adjusting the opening of the air conditioner throttling device. The present embodiment includes at least the following embodiments:
(1) and adjusting the working frequency of the air-conditioning compressor according to the first temperature difference, and adjusting the opening of the air-conditioning throttling device according to the actual condensing pressure.
(2) And adjusting the opening of the air conditioner throttling device according to the first temperature difference, and adjusting the working frequency of the air conditioner compressor according to the actual condensing pressure.
(3) Obtaining the change frequency of the working frequency of the air-conditioning compressor according to the first temperature difference, and adjusting the working frequency of the air-conditioning compressor according to the change frequency;
and after the second time, obtaining the correction frequency of the working frequency of the air-conditioning compressor according to the actual condensing pressure, obtaining the opening variation of the air-conditioning throttling device according to the actual condensing pressure, secondarily adjusting the working frequency of the air-conditioning compressor according to the correction frequency, and adjusting the opening of the air-conditioning throttling device according to the opening variation.
In an alternative embodiment, adjusting an actual condensing temperature of the refrigerant in the heat exchanger during condensing according to the first temperature difference and the actual condensing pressure includes:
and adjusting the working frequency of the air-conditioning compressor according to the first temperature difference, and adjusting the opening of the air-conditioning throttling device according to the actual condensing pressure.
In the embodiment, in the process of adjusting the working frequency of the air-conditioning compressor according to the first temperature difference, the larger the first temperature difference is, the faster the working frequency of the air-conditioning compressor is changed; the smaller the first temperature difference is, the slower the operating frequency of the air conditioning compressor changes. For the air conditioner which just enters the sterilization operation mode, the actual condensation temperature of the refrigerant in the indoor heat exchanger during condensation is lower than the first set temperature, and the frequency of an air conditioner compressor needs to be increased. In the frequency increasing process of the air-conditioning compressor, if the working frequency of the air-conditioning compressor reaches the inverse maximum working frequency, but the actual condensing temperature of the refrigerant is still lower than the first set temperature, the frequency increasing of the air-conditioning compressor is stopped, and the air-conditioning compressor continues to work at the maximum working frequency.
In an alternative embodiment, adjusting the operating frequency of the air conditioner compressor according to the first temperature difference includes: and dividing the first temperature difference into a plurality of intervals, and configuring the variable frequency rate of the working frequency of the corresponding air conditioner compressor for each interval. For example, the first temperature difference is divided into three intervals according to the first temperature difference: in the first interval, the first temperature difference is smaller than a first temperature threshold value; in a second interval, the first temperature difference is between the first temperature threshold and the second temperature threshold; in a third interval, the first temperature difference is greater than a second temperature threshold, wherein the first temperature threshold is less than the second temperature threshold. Correspondingly, in the first interval, the frequency conversion rate of the working frequency of the air-conditioning compressor is a first frequency conversion rate, in the second interval, the frequency conversion rate of the working frequency of the air-conditioning compressor is a second frequency conversion rate, and in the third interval, the frequency conversion rate of the working frequency of the air-conditioning compressor is a third frequency conversion rate, wherein the first frequency conversion rate is smaller than the second frequency conversion rate, and the second frequency conversion rate is smaller than the third frequency conversion rate. In the first interval, the first temperature difference is smaller, the working frequency of the air-conditioning compressor is changed at a first variable frequency rate, the adjustment rate of the working frequency of the air-conditioning compressor is slow, the working frequency of the air-conditioning compressor can be prevented from being excessively adjusted, and therefore the actual condensation temperature is prevented from excessively fluctuating; in the third interval, the first temperature difference is large, the working frequency of the air-conditioning compressor is changed at the third variable frequency rate, the adjusting rate of the working frequency of the air-conditioning compressor is high, the actual condensation temperature can be quickly changed, and the actual condensation temperature is generally quickly increased.
Optionally, the first temperature threshold is 5 ℃ and the second temperature threshold is 10 ℃;
optionally, the first frequency conversion rate is 0.2 Hz/s; the second frequency conversion rate is 1 Hz/s; the third frequency conversion rate is 2 Hz/s.
Under the condition that only the working frequency of the air conditioner compressor is changed, the actual condensing pressure of the refrigerant in the indoor heat exchanger during condensing can be changed along with the change of the actual condensing pressure, and the change trend of the actual condensing pressure is as follows: when the working frequency of the air conditioner compressor is increased, the actual condensing pressure tends to be increased; when the operating frequency of the air conditioner compressor is reduced, the actual condensing pressure tends to be reduced.
In the process that the operating frequency of air condition compressor changes, need real time monitoring actual condensing pressure, if actual condensing pressure surpasss the set pressure scope, then adjust air conditioner throttling arrangement's aperture, make actual condensing pressure return set pressure scope: if the actual condensing pressure is higher than the set upper limit pressure, the opening degree of the air conditioner throttling device is increased; and if the actual condensation pressure is lower than the set lower limit pressure, reducing the opening degree of the air conditioner throttling device.
In this embodiment, if the first temperature difference is large, the operating frequency of the air conditioner compressor increases rapidly, and if the opening degree of the air conditioner throttling device increases rapidly to ensure that the actual condensing pressure is within the set range, the refrigerant flow rate is large, and rapid temperature rise can be achieved.
Optionally, the upper limit pressure is set to the upper limit condensing pressure. In the condensation process of the refrigerant in the indoor heat exchanger of the air conditioner, the actual condensation pressure cannot exceed the maximum condensation pressure of the refrigerant which can be provided by the air conditioner compressor, and the air conditioner compressor is effectively protected.
Optionally, a theoretical condensation pressure corresponding to the actual condensation temperature as the saturation temperature is obtained by looking up a table, and the lower limit pressure is set as the theoretical condensation pressure. Under the operating mode that disinfects, the theoretical condensing temperature that air conditioner indoor heat exchanger corresponds at the in-process that heaies up is higher than actual condensing temperature all the time to actual condensing pressure, can effectually guarantee that indoor heat exchanger heaies up smoothly until reaching the required temperature of environment that disinfects.
Preferably, the set upper limit pressure is lower than the upper limit condensing pressure, and the set upper limit pressure is higher than the set lower limit pressure by a first pressure difference. That is, the set upper limit pressure in the present embodiment is changed in accordance with the change in the set lower limit pressure, the actual condensation temperature is increased, the theoretical condensation pressure with the actual condensation temperature as the saturation temperature is increased, the set lower limit pressure is increased, and the set upper limit pressure is increased, that is, the set upper limit pressure is changed in accordance with the actual condensation temperature. Optionally, the first pressure differential is 0.1 MPa. When the saturation temperature of the steam of the refrigerant R410A is between 40 ℃ and 60 ℃, the condensation pressure of the corresponding refrigerant R410A is averagely increased by 0.07MPa (two decimal places are reserved) when the saturation temperature is increased by 1 ℃. When the saturation temperature of the refrigerant R22 is between 40 ℃ and 60 ℃, the condensation pressure of the corresponding refrigerant R22 is averagely increased by 0.05 MPa. The lower limit pressure is set as the theoretical condensation pressure corresponding to the actual condensation temperature as the saturation temperature, and the upper limit pressure is set to be 0.1MPa higher than the lower limit pressure. The actual condensing pressure is guaranteed to be 0-0.1 MPa higher than the theoretical condensing pressure corresponding to the actual condensing temperature serving as the saturation temperature, and the theoretical condensing temperature corresponding to the actual condensing pressure is guaranteed to be 0-2 ℃ higher than the actual condensing temperature. Before the temperature in the indoor unit reaches the temperature required by the sterilization environment, the temperature of the refrigerant in the indoor heat exchanger can be ensured to continuously rise on the basis of the actual condensation temperature all the time, and the temperature required by the sterilization environment is smoothly reached.
In an alternative embodiment, adjusting an actual condensing temperature of the refrigerant in the indoor heat exchanger during condensing according to the first temperature difference and the actual condensing pressure includes: and adjusting the opening degree of the throttling device according to the first temperature difference, and adjusting the working frequency of the air-conditioning compressor according to the actual condensing pressure.
The larger the first temperature difference is, the larger the opening degree of the air conditioner throttling device is; the smaller the first temperature difference is, the smaller the opening degree of the air conditioner throttling device is. In the process of adjusting the air conditioner throttling device, the actual condensing pressure is monitored in real time, and if the actual condensing pressure exceeds the set pressure range, the working frequency of an air conditioner compressor is adjusted, so that the actual condensing pressure is in the set pressure range. Under the condition that the first temperature difference is large, the opening degree of the air conditioner throttling device is large, the flow of a refrigerant flowing through the indoor heat exchanger of the air conditioner is large, the heat emitted is large, and the temperature of the indoor heat exchanger is fast increased.
In an alternative embodiment, adjusting an actual condensing temperature of the refrigerant in the indoor heat exchanger during condensing according to the first temperature difference and the actual condensing pressure includes: obtaining the change frequency of the working frequency of the air-conditioning compressor according to the first temperature difference, and adjusting the working frequency of the air-conditioning compressor according to the change frequency;
and after the second time, obtaining the correction frequency of the working frequency of the air-conditioning compressor according to the actual condensing pressure, obtaining the opening variation of the air-conditioning throttling device according to the actual condensing pressure, secondarily adjusting the working frequency of the air-conditioning compressor according to the correction frequency, and adjusting the opening of the air-conditioning throttling device according to the opening variation.
Wherein the larger the first temperature difference is, the larger the variation frequency is, for example, the first temperature difference is in the first interval, and the variation frequency can be selected to be ± 1 Hz; the first temperature difference is in a second interval, and the variation frequency can be +/-3 Hz; the first temperature difference is in the third interval, and the variation frequency can be selected to be +/-5 Hz. For example, when the variation frequency is 5Hz, the operating frequency of the air conditioner compressor is increased by 5 Hz.
In an alternative embodiment, a correction frequency of an operating frequency of the air-conditioning compressor is obtained according to the actual condensing pressure, an opening degree variation of the air-conditioning throttling device is obtained according to the actual condensing pressure, the operating frequency of the air-conditioning compressor is adjusted twice according to the correction frequency, and the opening degree of the air-conditioning throttling device is adjusted according to the opening degree variation, specifically:
if the actual condensing pressure exceeds the set pressure range, simultaneously obtaining the correction frequency of the working frequency of the air-conditioning compressor and the opening variation of the air-conditioning throttling device according to the exceeding pressure of the actual condensing pressure exceeding the set pressure range, secondarily adjusting the working frequency of the air-conditioning compressor according to the correction frequency, and adjusting the opening of the air-conditioning throttling device according to the opening variation. When the actual condensing pressure is higher than the upper limit pressure of the set pressure range, the working frequency of an air conditioner compressor is reduced, and meanwhile, the opening degree of an air conditioner throttling device is increased; and if the actual condensation pressure is lower than the lower limit pressure of the set pressure range, the working frequency of the air conditioner compressor is increased, and the opening degree of the air conditioner throttling device is reduced. The larger the excess pressure is, the larger the correction frequency and the opening degree variation amount are; the smaller the excess pressure is, the smaller the correction frequency and the opening degree variation amount are. In this embodiment, the operating frequency of the air conditioner compressor and the first temperature rise synchronously, so that the phenomenon that the operating frequency of the compressor rises fast and the first temperature rises slowly is avoided, the waste phenomenon that the air conditioner compressor always works at a higher operating frequency and appears is avoided, and the energy-saving effect is good.
In an alternative embodiment, a correction frequency of an operating frequency of the air-conditioning compressor is obtained according to the actual condensing pressure, an opening degree variation of the air-conditioning throttling device is obtained according to the actual condensing pressure, the operating frequency of the air-conditioning compressor is adjusted twice according to the correction frequency, and the opening degree of the air-conditioning throttling device is adjusted according to the opening degree variation, specifically:
if the exceeding pressure of the actual condensation pressure exceeding the set pressure range is larger than a first pressure threshold, simultaneously obtaining the correction frequency of the working frequency of the air-conditioning compressor and the opening variation of the air-conditioning throttling device according to the exceeding pressure of the actual condensation pressure exceeding the set pressure range, secondarily adjusting the working frequency of the air-conditioning compressor according to the correction frequency, and adjusting the opening of the air-conditioning throttling device according to the opening variation;
if the exceeding pressure of the actual condensation pressure exceeding the set pressure range is smaller than or equal to a first pressure threshold value, obtaining the correction frequency of the working frequency of the air-conditioning compressor according to the exceeding pressure of the actual condensation pressure exceeding the set pressure range, and adjusting the working frequency of the air-conditioning compressor twice according to the correction frequency.
The second time in this embodiment refers to the time required until the change affects the actual condensing pressure in the indoor heat exchanger after the operating frequency of the air conditioner compressor is changed. Optionally, the second time is 3s to 10 s.
According to a second aspect of embodiments of the present invention, there is provided a sterilizing air conditioner including:
the first temperature acquisition module is used for acquiring the actual condensation temperature of the refrigerant of the indoor heat exchanger during condensation;
the first judgment module is used for judging whether the actual condensation temperature reaches a first set temperature or not;
the calculation processing module is used for acquiring a first temperature difference between the actual condensation temperature and the first set temperature when the actual condensation temperature does not reach the first set temperature;
the first pressure acquisition module is used for acquiring the actual condensation pressure of the refrigerant in the indoor heat exchanger during condensation;
and the execution module is used for adjusting the actual condensation temperature of the refrigerant of the indoor heat exchanger during condensation according to the first temperature difference and the actual condensation pressure.
In an alternative embodiment, the actual condensing pressure is lower than the upper condensing pressure.
In an alternative embodiment, the first set point temperature is 62 ℃ to 67 ℃.
In an optional embodiment, the method further comprises:
the timing module is used for recording the first time after the actual condensation temperature reaches the first set temperature under the condition that the actual condensation temperature reaches the first set temperature;
the second judgment module is used for judging whether the first time reaches a first set time;
and the execution module is also used for controlling the air conditioner to continuously run in a state that the first temperature reaches the first set temperature under the condition that the first time does not reach the first set time.
In an optional embodiment, the method further comprises:
the first humidity acquisition module is used for acquiring first relative humidity of indoor internal air;
the third judgment module is used for judging whether the first relative humidity is smaller than the first set relative humidity or not;
and the execution module is also used for exiting the sterilization operation mode.
In an alternative embodiment, the first set rh in the third determining module is 8%.
In an alternative embodiment, the execution module is further configured to adjust an operating frequency of an air conditioner compressor or adjust an opening degree of an air conditioner throttling device according to the first temperature difference or the actual condensing pressure.
In an optional embodiment, the execution module is further configured to enable the air conditioner to enter the sterilization operation mode each time the air conditioner is turned off.
In an optional embodiment, the method further comprises:
the second humidity acquisition module is used for acquiring second relative humidity of the indoor environment;
the fourth judgment module is used for judging whether the second relative humidity is higher than the second set relative humidity;
the first counting module is used for counting the operation time or the operation times of the air conditioner under the condition that the second relative humidity is not higher than the second set relative humidity;
the execution module is also used for enabling the air conditioner to enter a sterilization operation mode before the air conditioner is shut down each time under the condition that the second relative humidity is higher than the second set relative humidity; and entering a sterilization operation mode according to the counting result of the first counting module.
In an alternative embodiment, in the fourth determining module, the second relative humidity is 65%.
In an optional embodiment, the execution module is further configured to adjust an operating frequency of the compressor and a rotation speed of an indoor fan of the air conditioner according to the first temperature difference; and adjusting the opening of the air conditioner throttling device according to the actual condensing pressure.
In an alternative embodiment, the execution module is configured to adjust an operating frequency of the compressor and a rotation of an indoor fan of the air conditioner according to the first temperature difference, and includes: the execution module is used for dividing the first temperature difference into a plurality of intervals, and setting the frequency conversion rate of the working frequency of the corresponding air conditioner compressor and the running state of the indoor fan for each interval.
In an alternative embodiment, the actual condensing pressure is within the set pressure range.
In an alternative embodiment, the set upper limit pressure of the set pressure range is the upper limit condensing pressure.
In an alternative embodiment, a theoretical condensation pressure corresponding to the actual condensation temperature as the saturation temperature is obtained by looking up a refrigerant thermodynamic property table, and the set lower limit pressure of the pressure range is set as the theoretical condensation pressure.
In an alternative embodiment, the set upper limit pressure is lower than the upper limit condensing pressure and the set upper limit pressure is higher than the set lower limit pressure by a first pressure difference.
In an alternative embodiment, the first pressure differential is 0.1 MPa.
In an alternative embodiment, the execution module is configured to adjust the opening degree of the throttling device and the rotation speed of the indoor fan of the air conditioner according to the first temperature difference, and adjust the operating frequency of the compressor of the air conditioner according to the actual condensing pressure.
In an optional embodiment, the execution module is further configured to obtain a change frequency of an operating frequency of the air-conditioning compressor according to the first temperature difference, adjust the operating frequency of the air-conditioning compressor according to the change frequency, and adjust a rotation speed of the indoor fan according to the first temperature difference; after the second time, the execution module is further used for obtaining the correction frequency of the working frequency of the air-conditioning compressor according to the actual condensation pressure, obtaining the opening variation of the air-conditioning throttling device according to the actual condensation pressure, secondarily adjusting the working frequency of the air-conditioning compressor according to the correction frequency, and adjusting the opening of the air-conditioning throttling device according to the opening variation.
In an alternative embodiment, the second time is between 3s and 10 s.
It is to be understood that the present invention is not limited to the procedures and structures described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (8)
1. A sterilization method for an indoor unit of an air conditioner is characterized by comprising the following steps:
acquiring the actual condensation temperature of a refrigerant in the indoor heat exchanger during condensation;
judging whether the actual condensation temperature reaches a first set temperature or not;
if not, acquiring a first temperature difference between the actual condensation temperature and the first set temperature;
acquiring actual condensing pressure of a refrigerant in the indoor heat exchanger during condensation;
adjusting the actual condensation temperature of the refrigerant in the indoor heat exchanger during condensation according to the first temperature difference and the actual condensation pressure;
wherein, according to the first temperature difference with the actual condensing pressure adjust the actual condensing temperature of the refrigerant in the indoor heat exchanger when condensing, include: obtaining the change frequency of the working frequency of the air-conditioning compressor according to the first temperature difference, and adjusting the working frequency of the air-conditioning compressor according to the change frequency; and after the second time, obtaining the correction frequency of the working frequency of the air-conditioning compressor according to the actual condensation pressure, obtaining the opening variation of the air-conditioning throttling device according to the actual condensation pressure, adjusting the working frequency of the air-conditioning compressor twice according to the correction frequency, and adjusting the opening of the air-conditioning throttling device according to the opening variation.
2. The sterilization method according to claim 1, wherein the actual condensing pressure is lower than an upper limit condensing pressure.
3. The sterilization method according to claim 1 or 2, wherein the judging whether the actual condensation temperature reaches a first set temperature further comprises:
if so, recording the first time lasting after the actual condensation temperature reaches the first set temperature;
judging whether the first time reaches a first set time;
if not, the air conditioner continues to operate in a state that the actual condensation temperature reaches the first set temperature.
4. The sterilization method according to claim 3, wherein before the air conditioner continues to operate in a state where the actual condensing temperature reaches the first set temperature after the determination of whether the first time reaches the first set time, further comprising:
acquiring a first relative humidity of air inside an indoor unit;
judging whether the first relative humidity is smaller than a first set relative humidity or not;
if yes, the sterilization operation mode is exited.
5. A sterilization air conditioner is characterized by comprising:
the first temperature acquisition module is used for acquiring the actual condensation temperature of the refrigerant of the indoor heat exchanger during condensation;
the first judgment module is used for judging whether the actual condensation temperature reaches a first set temperature or not;
the calculation processing module is used for acquiring a first temperature difference between the actual condensation temperature and a first set temperature when the actual condensation temperature does not reach the first set temperature;
the first pressure acquisition module is used for acquiring the actual condensation pressure of the refrigerant in the indoor heat exchanger during condensation;
the execution module is used for adjusting the actual condensation temperature of the refrigerant of the indoor heat exchanger during condensation according to the first temperature difference and the actual condensation pressure;
the execution module is specifically used for obtaining the change frequency of the working frequency of the air-conditioning compressor according to the first temperature difference and adjusting the working frequency of the air-conditioning compressor according to the change frequency; and after the second time, obtaining the correction frequency of the working frequency of the air-conditioning compressor according to the actual condensation pressure, obtaining the opening variation of the air-conditioning throttling device according to the actual condensation pressure, adjusting the working frequency of the air-conditioning compressor twice according to the correction frequency, and adjusting the opening of the air-conditioning throttling device according to the opening variation.
6. The sterilizing air conditioner according to claim 5, wherein the actual condensing pressure is lower than the upper limit condensing pressure.
7. The sterilizing air conditioner according to claim 5 or 6, further comprising:
the timing module is used for recording first time lasting after the actual condensation temperature reaches a first set temperature under the condition that the actual condensation temperature reaches the first set temperature;
the second judgment module is used for judging whether the first time reaches a first set time;
and the execution module is also used for controlling the air conditioner to continuously run in a state that the first temperature reaches the first set temperature under the condition that the first time does not reach the first set time.
8. The sterilizing air conditioner of claim 7, further comprising:
the first humidity acquisition module is used for acquiring first relative humidity of indoor internal air;
the third judgment module is used for judging whether the first relative humidity is smaller than a first set relative humidity or not;
and the execution module is also used for exiting the sterilization operation mode.
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| CN111336660A (en) * | 2020-03-16 | 2020-06-26 | 宁波奥克斯电气股份有限公司 | Air conditioner sterilization control method and device, storage medium and air conditioner |
| CN111380175A (en) * | 2020-03-27 | 2020-07-07 | 广东美的制冷设备有限公司 | Air conditioner control method, air conditioner and storage medium |
| CN113531817A (en) * | 2020-04-21 | 2021-10-22 | 青岛海尔空调器有限总公司 | Variable frequency air conditioner and sterilization control method thereof |
| CN111692701B (en) * | 2020-06-09 | 2021-10-22 | 宁波奥克斯电气股份有限公司 | Air conditioner high-temperature sterilization control method and device, storage medium and air conditioner |
| CN111765608A (en) * | 2020-06-24 | 2020-10-13 | 海信（山东）空调有限公司 | Sterilizing control method for air conditioner |
| CN114061120A (en) * | 2020-07-31 | 2022-02-18 | 青岛海尔空调器有限总公司 | Method and device for controlling temperature rise and sterilization of air conditioner and air conditioner |
| CN114061113A (en) * | 2020-07-31 | 2022-02-18 | 青岛海尔空调器有限总公司 | Method and device for controlling temperature rise and sterilization of air conditioner and air conditioner |
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