CN110107990B - 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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- CN110107990B CN110107990B CN201810095833.9A CN201810095833A CN110107990B CN 110107990 B CN110107990 B CN 110107990B CN 201810095833 A CN201810095833 A CN 201810095833A CN 110107990 B CN110107990 B CN 110107990B
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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
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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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 regulating the first temperature according to a first temperature difference between the first temperature and the first set temperature and the actual condensing pressure. The first temperature on the surface of the indoor heat exchanger can directly reflect the temperature inside the indoor unit, the temperature inside the indoor unit is closely related to the sterilization effect, and the air conditioner has a better sterilization effect only when the temperature inside the indoor unit reaches the preset sterilization temperature. 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 a first temperature of the surface of an indoor heat exchanger;
judging whether the first temperature reaches a first set temperature;
if not, acquiring a first temperature difference between the first temperature and the first set temperature;
acquiring actual condensing pressure of a refrigerant in the indoor heat exchanger during condensation;
and adjusting the first temperature of the surface of the indoor heat exchanger 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, so that the air conditioner can be stably in a sterilization operation mode, and a better sterilization effect is realized. In the present embodiment, when controlling the temperature, the control variable is the first temperature of the surface of the indoor heat exchanger. The first temperature on the surface of the indoor heat exchanger can directly reflect the temperature inside the indoor unit, the temperature inside the indoor unit is closely related to the sterilization effect, and the air conditioner has a better sterilization effect only when the temperature inside the indoor unit reaches the preset sterilization temperature. 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.
In an alternative embodiment, the actual condensing pressure is lower than the upper condensing pressure.
In an optional embodiment, the determining whether the first temperature reaches a first set temperature further includes:
if so, recording the first time after the first 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 first temperature reaches the first set temperature.
In an optional embodiment, after determining whether the first time reaches a first set time, before the air conditioner continues to operate in a state where the first temperature reaches the first set temperature, the method further includes:
if not, acquiring a first relative humidity of the air in the 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.
In an alternative embodiment, said adjusting a first temperature of said indoor heat exchanger surface based on said first temperature difference and said actual condensing pressure comprises:
and adjusting the working frequency of an air conditioner compressor, or adjusting the opening of an air conditioner throttling device, or adjusting the rotating speed of an indoor fan of an air conditioner 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 a first temperature of the surface of the indoor heat exchanger;
the first judging module is used for judging whether the first temperature reaches a first set temperature;
the calculation processing module is used for acquiring a difference value between the first temperature and the first set temperature under the condition that the first 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 first temperature of the surface of the indoor heat exchanger 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 further used for recording first time lasting after the first temperature reaches the first set temperature under the condition that the first 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 reaches 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 air inside the indoor unit;
the third judgment module is used for judging whether the first relative humidity is smaller than a first set relative humidity;
and the execution module is also used for exiting the sterilization operation mode.
In an alternative embodiment, the execution module,
and the air conditioner is used for adjusting the working frequency of an air conditioner compressor, or adjusting the opening of an air conditioner throttling device, or adjusting the rotating speed of an indoor fan of an air conditioner according to the first temperature difference or the actual condensation 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 a first temperature of the surface of an indoor heat exchanger;
s102, judging whether the first temperature reaches a first set temperature;
s103, if not, acquiring a first temperature difference between the first 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 first temperature of the surface of the indoor heat exchanger 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, so that the air conditioner can be stably in a sterilization operation mode, and a better sterilization effect is realized.
Generally, an air conditioner is used for adjusting indoor temperature, and a temperature control method is often used for controlling air conditioner outlet air temperature or indoor temperature. When the air conditioner is in the sterilization operation mode, the temperature inside the air conditioner indoor unit needs to be ensured to reach the preset sterilization temperature, namely the temperature on the surface of the heat exchanger reaches the first set temperature, so that a sterilization environment is formed, and the air conditioner indoor unit can be effectively sterilized.
In the present embodiment, when controlling the temperature, the control variable is the first temperature of the surface of the indoor heat exchanger. The first temperature on the surface of the indoor heat exchanger can directly reflect the temperature inside the indoor unit, the temperature inside the indoor unit is closely related to the sterilization effect, and the air conditioner has a better sterilization effect only when the temperature inside the indoor unit reaches the preset sterilization temperature. Therefore, the first temperature on the surface of the indoor heat exchanger is controlled, and the sterilization effect of the air conditioner can be controlled. The sterilization method in the embodiment is specially used for controlling the sterilization temperature of the sterilization air conditioner, so that the sterilization air conditioner can be stably in a sterilization operation mode, and a better sterilization effect is realized.
The heat that the refrigerant gived off in the condensation process, during coil pipe transmission to indoor set through indoor heat exchanger, the required sterilization temperature of air conditioner is higher than the temperature that the air conditioner operated under normal refrigeration mode/the mode of heating far away in the sterilization process, according to thermodynamics second law, the heat can only be spontaneous from high temperature object transmission to low temperature object, promptly, if the actual condensing temperature of refrigerant when the condensation does not reach first settlement temperature, the temperature of the interior machine of air conditioner can never reach the required predetermined sterilization temperature of environment of disinfecting. 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. Therefore, in the first temperature adjustment process of the surface of the indoor heat exchanger, the influence of the actual condensation pressure is fully considered, so that the sterilization method in the embodiment is specially used for controlling the sterilization temperature of the sterilization air conditioner.
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 refers to 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 first temperature on the surface of the indoor heat exchanger reaches the first set temperature, the temperature inside the indoor unit rises to the temperature required by the sterilization environment, and optionally, the value range of the first set temperature is 55 ℃ to 62 ℃.
The value range of the first set temperature value is 55-62 ℃, namely the maximum value of the first set temperature value is 62 ℃, which is lower than the highest temperature provided by most indoor heat exchangers of air conditioners. The service life of the air conditioner can be prolonged. When the compressor provides the maximum refrigerant pressure, the compressor is easy to wear in the load. If the compression provides the maximum refrigerant pressure for a long time, the service life of the compression is shortened.
In addition, the value range of the first set temperature value is 55-62 ℃, according to the hardware configuration of the existing air conditioner, the first temperature value on the surface of the indoor heat exchanger can easily reach the temperature range, and a special compressor, a condensation discharge pipe and the like are not required to be configured for the air conditioner. Namely, the hardware production cost of the sterilization air conditioner is the same as that of the common air conditioner, so that the production cost of the sterilization air conditioner is effectively controlled, and the market competitiveness of the air conditioner is improved.
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 first temperature reaches the first set temperature further includes:
if yes, recording the first time after the first 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 first 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. The first temperature reaches first settlement temperature, and the temperature on indoor heat exchanger surface reaches predetermineeing sterilization temperature simultaneously, and the first time that first temperature lasted at first settlement temperature, the first time that sterilization temperature lasted is predetermineeing to the temperature on indoor heat exchanger surface promptly, and the first time that the environment that disinfects lasted promptly, after the first time that maintains the environment that disinfects in the air conditioning reached first settlement time, can kill most pathogenic bacteria and non-pathogenic bacteria, and 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 a first temperature of the surface of an indoor heat exchanger;
s202, judging whether the first temperature reaches a first set temperature; if yes, go to step S203; if not, go to step S206;
s203, recording the first time lasting after the first 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 first temperature reaches the first set temperature, and step S203 is executed;
s206, acquiring a first temperature difference between the first temperature and a first set temperature;
s207, acquiring actual condensing pressure of a refrigerant in the indoor heat exchanger during condensation;
s208, adjusting the first temperature of the surface of 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 60 ℃ and the first set time is 30min, the first set time can be selected to be 30min to 35min if the first set temperature is 58 ℃, and the first set time can be selected to be 25min to 30min if the first set temperature is 62 ℃. 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 first set temperature is 55 ℃ to 60 ℃. The actual condensation temperature is 62-67 ℃.
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 first 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 if 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 decrease of 26 c, the first relative humidity increases by 45%, which still has a bacterial growth inhibiting effect.
As shown in fig. 3, an optional implementation manner of the sterilization method in this embodiment is as follows:
s301, acquiring a first temperature of the surface of the indoor heat exchanger;
s302, judging whether the first temperature reaches a first set temperature; if yes, go to step S303; if not, go to step S308;
s303, recording the first time lasting after the first 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 first temperature reaches the first set temperature, and step S303 is executed;
s308, acquiring a first temperature difference between the first 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 first temperature of the surface of the indoor heat exchanger according to the first temperature difference and the actual condensation pressure, 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 first temperature of the indoor heat exchanger surface based on the first temperature difference and the actual condensing pressure includes increasing the first temperature and decreasing the first temperature. When the air conditioner just enters the sterilization operation mode, the first temperature is lower than the first set temperature, and at this time, the first temperature needs to be increased. After the first temperature reaches the first set temperature, the first temperature needs to be maintained at the first set temperature, and in the process of controlling the first temperature, the first temperature often fluctuates around the first set temperature, and at this time, the first temperature needs to be increased or decreased according to actual conditions: if the first temperature is lower than the first set temperature, the first temperature needs to be increased; if the first temperature is greater than the first set temperature, the first temperature needs to be decreased. It should be understood that, in the actual control process of the sterilization temperature of the sterilization air conditioner, the first temperature reaches the first set temperature, which means that the absolute value of the difference between the first temperature and the first set temperature is less than the set dead zone. Optionally, the dead zone is 0-1 ℃.
Adjusting the first temperature of the indoor heat exchanger surface based on the first temperature difference and the actual condensing pressure includes a process of increasing the first temperature and a process of decreasing the first temperature, that is, a process of decreasing the first temperature difference in step S308.
Factors influencing the first temperature include the working frequency of the air conditioner compressor, the opening of the air conditioner throttling device and the rotating speed of an indoor fan of the air conditioner.
In an alternative embodiment, adjusting the first temperature of the surface of the indoor heat exchanger of the air conditioner based on the first temperature difference and the actual condensing pressure includes:
and adjusting the working frequency of an air conditioner compressor, or adjusting the opening of an air conditioner throttling device, or adjusting the rotating speed of an indoor fan of the air conditioner according to the first temperature difference or the actual condensation pressure.
The purpose of adjusting the first temperature of the surface of the heat exchanger in the air conditioner room is achieved by adjusting the working frequency of an air conditioner compressor, or adjusting the opening of an air conditioner throttling device, or adjusting the rotating speed of an indoor fan of the air conditioner. The present embodiment includes at least the following embodiments:
(1) adjusting the working frequency of the compressor and the rotating speed of an indoor fan of the air conditioner according to the first temperature difference, and adjusting the opening of an air conditioner throttling device according to the actual condensation pressure;
(2) adjusting the opening degree of the throttling device and the rotating speed of an indoor fan of the air conditioner according to the first temperature difference, and adjusting the working frequency of an air conditioner compressor according to the actual condensation pressure;
(3) obtaining the change frequency of the working frequency of the air-conditioning compressor according to the first temperature difference, adjusting the working frequency of the air-conditioning compressor according to the change frequency, and adjusting the rotating speed of the indoor fan according to the first temperature difference; 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 the first temperature of the indoor heat exchanger surface based on the first temperature difference and the actual condensing pressure comprises: and adjusting the working frequency of the compressor and the rotating 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 condensation 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 an air conditioner that has just entered the sterilization mode of operation, the first temperature of the indoor heat exchanger surface is less than the first set temperature and the air conditioning compressor needs to be up-converted. 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 first temperature 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 compressor and the rotational speed of the indoor fan of the air conditioner according to the first temperature difference includes: and 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 fan 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 the first frequency conversion rate, and the indoor fan of the air-conditioning runs at a low speed; in the second interval, the variable frequency rate of the working frequency of the air-conditioning compressor is a second variable frequency rate, and the indoor fan of the air conditioner stops running; in the third interval, the variable frequency rate of the working frequency of the air-conditioning compressor is the third variable frequency rate, and the indoor fan of the air conditioner stops running; 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, and the adjustment rate of the working frequency of the air-conditioning compressor is slow, so that the working frequency of the air-conditioning compressor can be prevented from being excessively adjusted, and the first 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 frequency conversion rate, the adjusting rate of the working frequency of the air-conditioning compressor is high, the first temperature can be quickly changed, and generally the first temperature is 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, the first temperature difference is large, for example, in the third section, the operating frequency of the air conditioner compressor increases rapidly, and in order to ensure that the actual condensing pressure is within the set pressure range, the opening degree of the air conditioner throttling device increases rapidly, the refrigerant flow rate is large, and rapid temperature rise can be achieved.
Alternatively, the set upper limit pressure of the set pressure range is 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 refrigerant thermodynamic property table, and the set lower limit pressure of the set pressure range is the theoretical condensation pressure. The first temperature is lower than the actual condensation temperature, optionally, the actual condensation temperature is 6-7 ℃ higher than the first temperature. 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 the theoretical condensing temperature that actual condensing pressure corresponds, can effectually guarantee that indoor heat exchanger heaies up smoothly, reaches first settlement temperature until first temperature to reach the required temperature of environment of disinfecting.
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 with a change in the set lower limit pressure, the first temperature is increased, the actual condensing temperature is increased, the theoretical condensing pressure with the actual condensing 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 with the first 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 on the surface of the indoor heat exchanger can be ensured to continuously rise on the basis of the first temperature all the time, and the temperature required by the sterilization environment is smoothly reached.
In an alternative embodiment, adjusting the first temperature of the indoor heat exchanger surface based on the first temperature difference and the actual condensing pressure comprises: and adjusting the opening degree of the throttling device and the rotating speed of the indoor fan of the air conditioner according to the first temperature difference, and adjusting the working frequency of the air conditioner compressor according to the actual condensation 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. The first temperature difference is in the first interval, the indoor fan of the air conditioner runs at a low speed, the first temperature is in the second interval, the indoor fan of the air conditioner stops running, the first temperature difference is in the third interval, and the indoor fan of the air conditioner stops running. 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 or when the first temperature difference is in the third interval, the indoor seal stops running, the opening degree of the air conditioner throttling device is large, the flow of refrigerant flowing through the indoor heat exchanger of the air conditioner is large, the heat emitted is large, and the indoor heat exchanger is heated quickly. Wherein, the indoor fan of air conditioner runs at low speed, which means that the rotating speed of the fan is lower than 500 r/min.
In an alternative embodiment, adjusting the first temperature of the indoor heat exchanger surface based on the first temperature difference and the actual condensing pressure comprises: obtaining the change frequency of the working frequency of the air-conditioning compressor according to the first temperature difference, adjusting the working frequency of the air-conditioning compressor according to the change frequency, and adjusting the rotating speed of the indoor fan according to the first temperature difference;
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.
The larger the first temperature difference is, the larger the change frequency of the working frequency of the air-conditioning compressor is, and the lower the rotating speed of the indoor fan of the air-conditioner is. For example, the first temperature difference is in the first interval, the variation frequency can be selected to be +/-1 Hz, and the indoor fan of the air conditioner runs at low speed; the first temperature difference is in a second interval, the change frequency can be +/-3 Hz, and the indoor fan of the air conditioner stops running; the first temperature difference is in the third interval, the variation frequency can be +/-5 Hz, and the indoor fan of the air conditioner stops running. When the variation frequency is 5Hz, the working frequency of the air conditioner compressor is increased by 5 Hz.
In an alternative embodiment, a correction frequency of an operating frequency of an air conditioner compressor is obtained according to an actual condensing pressure, an opening degree variation of an air conditioner throttling device is obtained according to the actual condensing pressure, the operating frequency of the air conditioner compressor is adjusted twice according to the correction frequency, and an opening degree of the air conditioner 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 an air conditioner compressor is obtained according to an actual condensing pressure, an opening degree variation of an air conditioner throttling device is obtained according to the actual condensing pressure, the operating frequency of the air conditioner compressor is adjusted twice according to the correction frequency, and an opening degree of the air conditioner 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 frequency 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 a first temperature of the surface of the indoor heat exchanger;
the first judging module is used for judging whether the first temperature reaches a first set temperature;
the calculation processing module is used for acquiring a difference value between the first temperature and the first set temperature under the condition that the first 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 first temperature of the surface of the indoor heat exchanger 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, in the first determining module, the first set temperature is 55 ℃ to 62 ℃.
In an optional embodiment, the method further comprises:
the timing module is further used for recording the first time after the first temperature reaches the first set temperature under the condition that the first 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 reaches the first set time.
In an optional embodiment, the first setting time is 20min to 50 min.
In a preferred embodiment, the first set temperature is between 55 ℃ and 60 ℃.
In a preferred embodiment, the first set time is 30 min.
In an optional embodiment, the method further comprises:
the first humidity acquisition module is used for acquiring first relative humidity of air inside the indoor unit;
the third judgment module is used for judging whether the first relative humidity is smaller than a first set relative humidity;
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 configured to adjust an operating frequency of an air conditioner compressor, or adjust an opening degree of an air conditioner throttling device, or adjust a rotation speed of an indoor fan of an air conditioner 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 before each shutdown of the air conditioner.
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 set rh 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 rotational speed 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 (10)
1. A sterilization method for an indoor unit of an air conditioner is characterized by comprising the following steps:
acquiring a first temperature of the surface of an indoor heat exchanger;
judging whether the first temperature reaches a first set temperature;
if not, acquiring a first temperature difference between the first temperature and the first set temperature;
acquiring actual condensing pressure of a refrigerant in the indoor heat exchanger during condensation;
adjusting a first temperature of a surface of an indoor heat exchanger according to the first temperature difference and the actual condensing pressure;
wherein adjusting a first temperature of an indoor heat exchanger surface as a function of the first temperature difference and the actual condensing pressure comprises:
obtaining the change frequency of the working frequency of the air-conditioning compressor according to the first temperature difference;
adjusting the working frequency of the air-conditioning compressor according to the change frequency;
after the second time, obtaining the correction frequency of the working frequency of the air-conditioning compressor according to the actual condensing pressure;
and adjusting the working frequency of the air-conditioning compressor twice according to the correction frequency.
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 determining whether the first temperature reaches a first set temperature further comprises:
if so, recording the first time after the first 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 first 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 first temperature reaches the first set temperature after the determination of whether the first time reaches the first set time, further comprising:
if not, acquiring a first relative humidity of the air in the 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. The sterilization method according to claim 1, wherein said adjusting a first temperature of the indoor heat exchanger surface based on the first temperature difference and the actual condensing pressure comprises:
and adjusting the opening degree of an air conditioner throttling device or adjusting the rotating speed of an indoor fan of an air conditioner according to the first temperature difference or the actual condensation pressure.
6. A sterilization air conditioner is characterized by comprising:
the first temperature acquisition module is used for acquiring a first temperature of the surface of the indoor heat exchanger;
the first judging module is used for judging whether the first temperature reaches a first set temperature;
the calculation processing module is used for acquiring a difference value between the first temperature and the first set temperature under the condition that the first 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 a first temperature of the surface of the indoor heat exchanger according to the first temperature difference and the actual condensation pressure, and specifically obtaining the change frequency of the working frequency of the air-conditioning compressor according to the first temperature difference; adjusting the working frequency of the air-conditioning compressor according to the change frequency; after the second time, obtaining the correction frequency of the working frequency of the air-conditioning compressor according to the actual condensing pressure; and adjusting the working frequency of the air-conditioning compressor twice according to the correction frequency.
7. The sterilizing air conditioner according to claim 6, wherein the actual condensing pressure is lower than the upper limit condensing pressure.
8. The sterilizing air conditioner according to claim 6 or 7, further comprising:
the timing module is further used for recording first time lasting after the first temperature reaches the first set temperature under the condition that the first 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 reaches the first set time.
9. The sterilizing air conditioner of claim 8, further comprising:
the first humidity acquisition module is used for acquiring first relative humidity of air inside the indoor unit;
the third judgment module is used for judging whether the first relative humidity is smaller than a first set relative humidity;
and the execution module is also used for exiting the sterilization operation mode.
10. The sterilizing air conditioner of claim 6, wherein the execution module,
and the air conditioner is also used for adjusting the opening of an air conditioner throttling device or adjusting the rotating speed of an indoor fan of the air conditioner according to the first temperature difference or the actual condensation pressure.
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| CN104848507A (en) * | 2015-04-30 | 2015-08-19 | 青岛海尔空调器有限总公司 | Cleaning method and cleaning device of air conditioner |
| CN105352128A (en) * | 2015-11-25 | 2016-02-24 | 珠海格力电器股份有限公司 | Method and system for cleaning air conditioner and air conditioner |
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Effective date of registration: 20210415 Address after: 266101 Haier Road, Laoshan District, Qingdao, Qingdao, Shandong Province, No. 1 Applicant after: QINGDAO HAIER SMART TECHNOLOGY R&D Co.,Ltd. Applicant after: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. Applicant after: Haier Smart Home Co., Ltd. Address before: 266101 Haier Road, Laoshan District, Qingdao, Qingdao, Shandong Province, No. 1 Applicant before: QINGDAO HAIER SMART TECHNOLOGY R&D Co.,Ltd. Applicant before: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. |
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