Air conditioner and control method thereof

Abstract

The application provides a sterilization air conditioner and a control method thereof. The control method of the sterilization air conditioner comprises the following steps: obtaining an accumulated running time Ttotal of the air conditioner; obtaining a working state of the air conditioner; and performing sterilization control on the air conditioner according to the accumulated running time and the working state of the air conditioner, wherein the sterilization control can be performed by at least one of the following modes: air conditioner refrigeration defrosting self-cleaning, ultraviolet sterilization lamp (6) and ion generator (7). According to the control method of the sterilization air conditioner, the air entering the air conditioner can be more comprehensively and effectively sterilized, and the indoor air quality is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air treatment, in particular to a sterilization air conditioner and a control method thereof. BACKGROUND

[0002] There are various bacteria, fungi and viruses everywhere in life, which threaten people's health. With the improvement of people's living quality, people's pursuit of indoor air quality is also getting higher and higher. The main source of microorganisms in indoor air is people's life and activities in the room. At present, more and more fresh air ventilation air conditioners and sterilization function air conditioners appear in the market. Most of the air conditioners with sterilization function on the market are installed with ultraviolet sterilization device to sterilize the evaporator by releasing ultraviolet rays, so as to purify the air circulating through the evaporator.

[0003] However, in the process of sterilizing the air passing through the air conditioner by ultraviolet rays, the ultraviolet sterilization must ensure that the light cannot radiate to the human body, so the ultraviolet sterilization lamp is generally placed inside the air conditioner against the evaporator. The evaporator has a large thickness, and the light irradiation is not comprehensive, and the light irradiation sterilization will not be comprehensive under the condition of large air flow speed. SUMMARY

[0004] The main purpose of the present application is to provide a sterilization air conditioner and a control method thereof, which can more comprehensively and effectively sterilize the air entering the air conditioner and improve the indoor air quality.

[0005] In order to achieve the above purpose, according to one aspect of the present application, a sterilization air conditioner is provided, which comprises an indoor unit, the indoor unit comprising a shell and an indoor heat exchanger, the shell having an air inlet and an air outlet, the air outlet being provided with an ion generator, the air inlet being provided with an air detector, the indoor heat exchanger being arranged in the shell, and a ultraviolet sterilization lamp being further arranged in the shell, the ultraviolet sterilization lamp being directed to the air inlet side and / or the air outlet side of the indoor heat exchanger.

[0006] According to another aspect of the present application, a control method of the above sterilization air conditioner is provided, comprising:

[0007] obtaining the total running time Ttotal of the air conditioner;

[0008] obtaining the working state of the air conditioner;

[0009] controlling the sterilization of the air conditioner according to the total running time and the working state of the air conditioner, wherein the sterilization control can be implemented by at least one of the air conditioner refrigeration defrosting self-cleaning, the ultraviolet sterilization lamp and the ion generator.

[0010] Further, the step of controlling the sterilization of the air conditioner according to the total running time and the working state of the air conditioner comprises:

[0011] when Ttotal≥Tpre, and the air conditioner is in the off state, starting the air conditioner and performing a freeze defrost self-cleaning, where Tpre is a preset accumulated running time of the air conditioner;

[0012] controlling the indoor heat exchanger to freeze and defrost for a time T1, and then stopping operation;

[0013] after the frost on the indoor heat exchanger melts, controlling the ultraviolet sterilization lamp to irradiate the indoor heat exchanger for a time T2.

[0014] Further, the step of controlling the indoor heat exchanger to freeze and defrost for a time T1, and then stopping operation, further comprises:

[0015] heating the indoor heat exchanger to accelerate melting of the frost on the indoor heat exchanger.

[0016] Further, the step of performing sterilization control on the air conditioner according to the accumulated running time and the working state of the air conditioner, further comprises:

[0017] when Ttotal≥Tpre, and the air conditioner is in the on state, controlling the ultraviolet sterilization lamp to irradiate the indoor heat exchanger for a time T2;

[0018] after the air conditioner stops operation, performing a freeze defrost self-cleaning on the air conditioner.

[0019] Further, the step of performing sterilization control on the air conditioner according to the accumulated running time and the working state of the air conditioner, further comprises:

[0020] when Ttotal

[0021] obtaining an air limit value humidity W0 and an air limit value temperature T0 of the air conditioner;

[0022] performing sterilization control on the air conditioner according to the humidity W, the temperature T, the air limit value humidity W0 and the air limit value temperature T0 of the current indoor air.

[0023] Further, the step of performing sterilization control on the air conditioner according to the humidity W, the temperature T, the air limit value humidity W0 and the air limit value temperature T0 of the current indoor air, further comprises:

[0024] when W≥T0 or T≥T0, and the air conditioner wind speed gear is the strong wind gear or the high wind gear, controlling the ultraviolet sterilization lamp to irradiate the indoor heat exchanger, and controlling the ion generator to work.

[0025] Further, the step of controlling the air conditioner according to the current indoor air humidity W, temperature T, air limit value humidity W0 and air limit value temperature T0 includes:

[0026] When W≥T0 or T≥T0, and the air conditioner wind speed gear is the middle wind gear or the low wind gear, the ultraviolet sterilization lamp is controlled to be closed, and the ion generator is controlled to work.

[0027] Further, the step of controlling the air conditioner according to the current indoor air humidity W, temperature T, air limit value humidity W0 and air limit value temperature T0 includes:

[0028] When W<T0 and T<T0, the ultraviolet sterilization lamp is controlled to be closed, and the ion generator is controlled to be closed.

[0029] Further, the step of obtaining the air conditioner cumulative running time Ttotal includes:

[0030] When the air conditioner is started for the first time, the air conditioner cumulative running time Ttotal is the total running time from the first start of the air conditioner to the current open state;

[0031] When the air conditioner is not started for the first time, the air conditioner cumulative running time Ttotal is the total running time from the last refrigeration frost self-cleaning end to the current open state;

[0032] When the air conditioner refrigeration frost self-cleaning ends, the air conditioner cumulative running time is cleared and restarted.

[0033] Further, the control method further includes:

[0034] When the air conditioner refrigeration frost self-cleaning ends, the Tpre is shortened by t1 time, and the adjusted preset time is stored as a new Tpre.

[0035] The application of the technical scheme of the present application, the control method of the sterilization air conditioner includes: obtaining the air conditioner cumulative running time Ttotal; obtaining the working state of the air conditioner; according to the cumulative running time and the working state of the air conditioner, the air conditioner is controlled by sterilization, wherein the sterilization control can be implemented by at least one of the air conditioner refrigeration frost self-cleaning, the ultraviolet sterilization lamp and the ion generator. The control method of the sterilization air conditioner can select the sterilization mode of the air conditioner as needed, can realize the sterilization of the air conditioner itself, can realize efficient sterilization through the ultraviolet sterilization lamp, and can realize rapid and comprehensive sterilization through the ion generator, so as to realize three sterilizations, can more comprehensively and effectively sterilize the air entering the air conditioner, and improve the indoor air quality. BRIEF DESCRIPTION OF DRAWINGS

[0036] The drawings constituting a part of the specification illustrate the present application, the exemplary embodiments of the present application and their description serve to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0037] Figure 1 A perspective structural schematic diagram of a sterilization air conditioner is shown, which shows an embodiment of the present application;

[0038] Figure 2 An enlarged structural schematic diagram of A in Figure 1

[0039] Figure 3 A perspective structural schematic diagram of a sterilization air conditioner is shown, which shows an embodiment of the present application;

[0040] Figure 4 An internal structural schematic diagram of a sterilization air conditioner is shown, which shows an embodiment of the present application; and

[0041] Figure 5 A control method flow chart of a sterilization air conditioner is shown, which shows an embodiment of the present application.

[0042] Among the above drawings, the following reference signs are included:

[0043] 1, housing; 2, indoor heat exchanger; 3, air inlet; 4, air outlet; 5, air detector; 6, ultraviolet sterilization lamp; 7, ion generator. DETAILED DESCRIPTION

[0044] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0045] Reference should be made to Figures 1 to 4 According to the embodiments of the present application, the sterilization air conditioner includes an indoor unit, the indoor unit includes a housing 1 and an indoor heat exchanger 2, the housing 1 has an air inlet 3 and an air outlet 4, the air outlet 4 is provided with an ion generator 7, the air inlet 3 is provided with an air detector 5, the indoor heat exchanger 2 is arranged in the housing 1, the housing 1 is further provided with an ultraviolet sterilization lamp 6, and the ultraviolet sterilization lamp 6 faces the air inlet side and / or the air outlet side of the indoor heat exchanger 2.

[0046] ​The sterilization air conditioner is provided with an ion generator 7 at the air outlet 4, and is provided with an ultraviolet sterilization lamp 6 at the air inlet side and / or air outlet side of the indoor heat exchanger 2. In combination with the freezing and defrosting function of the sterilization air conditioner, the sterilization mode of the air conditioner can be selected as required, the sterilization of the air conditioner itself can be realized through the freezing and defrosting of the sterilization air conditioner, the dust and microorganisms on the indoor heat exchanger 2 can be effectively peeled off, the effective sterilization of the indoor heat exchanger itself can be realized, the microorganisms left on the indoor heat exchanger 2 can be effectively sterilized through the ultraviolet sterilization lamp, the air outlet of the air conditioner can be quickly and comprehensively sterilized through the ion generator, and the negative oxygen ions are generated to freshen the air, so as to improve the indoor air quality and be beneficial to the health of the human body. Therefore, the three sterilizations can be realized, the air entering the air conditioner can be more comprehensively and effectively sterilized, and the indoor air quality is improved.

[0047] In addition, the sterilization mode can be selected according to the air quality, the energy consumption of the air conditioner is reduced, and the energy-saving effect is achieved.

[0048] In one embodiment, the air detector 5 can detect the humidity and temperature of the indoor air, so as to effectively judge the microorganism breeding condition according to the humidity and temperature, select a more effective and energy-saving sterilization mode, and reduce the energy consumption of the sterilization air conditioner while ensuring effective sterilization.

[0049] In one embodiment, the ion generator 7 is a bipolar ion generator. The bipolar ion generator generates sharp pulse discharge through double electrodes under high voltage, ionizes air, and forms high-concentration plasma. At the same time, the emitter releases a large amount of high-energy electrons under the action of pulse high voltage. Gas molecules and high-energy electrons collide with each other, so that the space is rich in ions, electrons, excited-state atoms, molecules and some active oxidizing substances: OH, etc. Strong oxidizing high-energy charged particles and active ingredients can diffuse in the space and collide with bacteria, viruses, etc. to achieve the effect of sterilization by destroying the protein structure of cells. The bipolar ion generator can effectively generate high-energy strong ions, and the ion mobility is high and the ion release distance is far, so that the sterilization and virus removal effects are excellent.

[0050] In one embodiment, the ion generator 7 is, for example, a negative ion generator.

[0051] In one embodiment, the ion generator 7 is two, which are respectively arranged on the left and right sides of the air outlet 4, so as to ensure the coverage range of the ion generator 7 and realize effective and comprehensive sterilization of the air outlet of the air conditioner.

[0052] In one embodiment, the ultraviolet sterilization lamp 6 is installed on the panel body and faces the indoor heat exchanger 2. In order to ensure the sterilization coverage range of the ultraviolet sterilization lamp 6, the number of the ultraviolet sterilization lamp 6 can be at least two, and the ultraviolet sterilization lamp 6 is arranged at the left 1 / 3 position and the right 1 / 3 position of the indoor heat exchanger 2.

[0053] In one embodiment, the sterilization air conditioner further comprises an electric heater, which can be used to heat the indoor heat exchanger 2 after the sterilization of the indoor heat exchanger 2 by the freeze defrosting of the sterilization air conditioner, so as to accelerate the melting of the ice and frost on the indoor heat exchanger 2.

[0054] With reference to Figure 5 As shown in the drawings, the control method of the sterilization air conditioner according to the embodiment of the present application comprises: obtaining the total running time Ttotal of the air conditioner; obtaining the working state of the air conditioner; and controlling the sterilization of the air conditioner according to the total running time and the working state of the air conditioner, wherein the sterilization control can be implemented by at least one of the freeze defrosting self-cleaning, the ultraviolet sterilization lamp 6 and the ion generator 7 of the air conditioner.

[0055] The sterilization air conditioner is provided with the ion generator 7 at the air outlet 4, the ultraviolet sterilization lamp 6 at the air inlet side and / or the air outlet side of the indoor heat exchanger 2, and can select the sterilization mode of the air conditioner according to the needs in combination with the freeze defrosting function of the sterilization air conditioner. The sterilization of the air conditioner itself can be realized by the freeze defrosting of the sterilization air conditioner, the dust and microorganisms on the indoor heat exchanger 2 can be effectively peeled off, the effective sterilization of the indoor heat exchanger itself can be realized, the microorganisms left on the indoor heat exchanger 2 can be effectively sterilized by the ultraviolet sterilization lamp, the air outlet of the air conditioner can be quickly and comprehensively sterilized by the ion generator, and the negative oxygen ions are generated to freshen the air, so as to improve the indoor air quality and be beneficial to the health of the human body. Therefore, the three sterilizations can be realized, the air entering the air conditioner can be more comprehensively and effectively sterilized, and the indoor air quality can be improved.

[0056] In one embodiment, the step of controlling the sterilization of the air conditioner according to the total running time and the working state of the air conditioner comprises:

[0057] When Ttotal≥Tpre, and the air conditioner is in the shutdown state, the air conditioner is started and the freeze defrosting self-cleaning is performed, wherein Tpre is the preset total running time of the air conditioner;

[0058] The freeze defrosting of the indoor heat exchanger 2 is controlled and lasts for T1 time, and then the working is stopped.

[0059] After the ice and frost on the indoor heat exchanger 2 are melted, the ultraviolet sterilization lamp 6 is controlled to irradiate the indoor heat exchanger 2 and lasts for T2 time.

[0060] When Ttotal≥ Tpre, it indicates that the air conditioner has been running for a long enough time, so that the dust accumulated on the indoor heat exchanger 2 is more, and it is more easy to produce bacteria, fungi, viruses and other microorganisms, so in this case, the microorganisms on the indoor heat exchanger 2 need to be killed, to reduce the bacteria, fungi, viruses and other microorganisms contained in the air, and to improve the indoor air quality. Since the defrosting process of the indoor heat exchanger 2 must be carried out in the off state of the indoor unit, it is necessary to determine whether the air conditioner is in the off state, and in the off state, the air conditioner can be controlled to start the defrosting self-cleaning to improve the self-cleaning effect.

[0061] The defrosting self-cleaning mode of the air conditioner is carried out in the refrigeration mode of the air conditioner, but it is different from the conventional refrigeration mode, which is reflected in two aspects, one is the requirement for humidity, and the other is the requirement for refrigeration temperature. The requirements for humidity and refrigeration temperature need to be met at the same time, so that frost can be formed on the surface of the indoor heat exchanger 2, effectively peeling off the dust and microorganisms adhered to the surface of the indoor heat exchanger 2.

[0062] For humidity, when the air humidity is insufficient, the condensed water can be reused, and the condensed water is sprayed in the form of mist on the surface of the indoor heat exchanger 2 through an atomizer or the like, so that the surface of the indoor heat exchanger 2 has enough moisture to meet the frosting requirement. For temperature, the surface temperature of the indoor heat exchanger 2 needs to be below the dew point temperature, so that the moisture on the surface of the indoor heat exchanger 2 can fully condense to form ice frost, and the ice frost can more fully clear the dust and microorganisms on the surface of the indoor heat exchanger 2 which are not easy to clear, thereby effectively removing dust and sterilizing the indoor heat exchanger 2.

[0063] In one embodiment, the step of controlling the indoor heat exchanger 2 to freeze frost and continue for T1 time, and then stop working, comprises:

[0064] The indoor heat exchanger 2 is heated to accelerate the melting of the ice frost on the indoor heat exchanger 2.

[0065] In this embodiment, after the surface of the indoor heat exchanger 2 is fully frosted and the dust and microorganisms are effectively peeled off from the surface, the surface of the indoor heat exchanger 2 can be heated by the electric heater, so that the ice frost on the surface of the indoor heat exchanger 2 can be quickly melted.

[0066] The way of frosting on the surface of the indoor heat exchanger 2 cannot completely clear the dust and microorganisms on the surface of the indoor heat exchanger 2, at this time, the ultraviolet sterilization lamp 6 is needed to continue to sterilize the surface of the indoor heat exchanger 2, and the ultraviolet sterilization lamp 6 is used to sterilize the microorganisms still remaining on the indoor heat exchanger 2 after self-cleaning, which cooperates with the defrosting self-cleaning to supplement the deficiency of the defrosting self-cleaning sterilization, and more effectively eliminates the microorganisms on the indoor heat exchanger 2, thereby improving the sterilization effect.

[0067] In one embodiment, the step of controlling sterilization of the air conditioner according to the accumulated running time and working state of the air conditioner comprises:

[0068] When Ttotal≥Tpre, and the air conditioner is in the start-up state, the ultraviolet sterilization lamp 6 is controlled to irradiate the indoor heat exchanger 2 for T2 time;

[0069] After the air conditioner stops working, the air conditioner is subjected to the refrigeration defrosting self-cleaning.

[0070] In the embodiment, when the time requirement of Ttotal≥Tpre is met, at this time, since the air conditioner is still in the running state, the sterilization cannot be directly performed by the indoor heat exchanger 2 in the refrigeration defrosting self-cleaning mode, therefore, the indoor heat exchanger 2 can be first sterilized by irradiation of the ultraviolet sterilization lamp 6, and after the air conditioner stops running, the sterilization is performed by the indoor heat exchanger 2 in the refrigeration defrosting self-cleaning mode, so that the dust and microorganisms on the surface of the indoor heat exchanger 2 are effectively removed, and the breeding environment of the microorganisms is removed, and the difficulty of the generation of the microorganisms is increased.

[0071] In one embodiment, the step of controlling sterilization of the air conditioner according to the accumulated running time and working state of the air conditioner comprises:

[0072] When Ttotal

[0073] The air limit value humidity W0 and the air limit value temperature T0 of the air conditioner are obtained;

[0074] The air conditioner is controlled according to the humidity W, the temperature T, the air limit value humidity W0 and the air limit value temperature T0 of the current indoor air.

[0075] The temperature and humidity of the indoor environment play a key role in the breeding of microorganisms, and high indoor temperature or high humidity will help the breeding of microorganisms. Microorganisms exist in the air, and also enter the air conditioner for refrigeration or heating circulation. Therefore, the ion generator 7 needs to sterilize the air at the air outlet 4. If the indoor environment temperature and humidity are good, the microorganisms in the air breed slowly, and the sterilization equipment can be turned off.

[0076] When the air flow rate through the ion generator 7 is large due to high air speed of the air conditioner, the sterilization of the ion generator 7 is not complete, at this time, the ultraviolet sterilization lamp 6 is turned on to irradiate the indoor heat exchanger 2 to sterilize the air flowing through the indoor heat exchanger 2, so that double sterilization is achieved, and the effect is better.

[0077] When the air flow rate through the ion generator 7 is small due to a low air speed of the air conditioner, the ion generator 7 can effectively sterilize the air, and the ultraviolet sterilization lamp 6 is turned off to prolong the service life of the ultraviolet sterilization lamp 6.

[0078] In one embodiment, the step of performing sterilization control on the air conditioner according to the current indoor air humidity W, the current indoor air temperature T, the air limit value humidity W0 and the air limit value temperature T0 includes:

[0079] When W≥T0 or T≥T0 and the air speed gear of the air conditioner is the strong wind gear or the high wind gear, the ultraviolet sterilization lamp 6 is controlled to irradiate the indoor heat exchanger 2, and the ion generator 7 is controlled to work.

[0080] When W≥T0 or T≥T0, the air environment is easy to breed microorganisms, and thus the sterilization device needs to be turned on to sterilize the air. Since the air speed gear of the air conditioner is the strong wind gear or the high wind gear, the ion generator 7 has a poor sterilization effect on the air in the strong wind gear or the high wind gear. Therefore, the ultraviolet sterilization lamp 6 needs to be turned on to compensate for the sterilization of the air flowing through the indoor heat exchanger 2. The air sterilized by the ultraviolet sterilization lamp 6 is sterilized again by the ion generator 7 at the air outlet 4, thereby achieving double sterilization and ensuring the sterilization effect. The copper lock ion generator 7 can generate negative oxygen ions to freshen the air and thus effectively improve the air quality.

[0081] In one embodiment, the step of performing sterilization control on the air conditioner according to the current indoor air humidity W, the current indoor air temperature T, the air limit value humidity W0 and the air limit value temperature T0 includes:

[0082] When W≥T0 or T≥T0 and the air speed gear of the air conditioner is the strong wind gear or the high wind gear, the ultraviolet sterilization lamp 6 is controlled to irradiate the indoor heat exchanger 2, and the ion generator 7 is controlled to work.

[0083] When W≥T0 or T≥T0, the air environment is easy to breed microorganisms, and thus the sterilization device needs to be turned on to sterilize the air. Since the air speed gear of the air conditioner is the strong wind gear or the high wind gear, the ion generator 7 has a poor sterilization effect on the air in the strong wind gear or the high wind gear. Therefore, the ultraviolet sterilization lamp 6 needs to be turned on to compensate for the sterilization of the air flowing through the indoor heat exchanger 2. The air sterilized by the ultraviolet sterilization lamp 6 is sterilized again by the ion generator 7 at the air outlet 4, thereby achieving double sterilization and ensuring the sterilization effect. The copper lock ion generator 7 can generate negative oxygen ions to freshen the air and thus effectively improve the air quality.

[0084] In one embodiment, the step of performing sterilization control on the air conditioner according to the current indoor air humidity W, the current indoor air temperature T, the air limit value humidity W0 and the air limit value temperature T0 includes:

[0085] When W<T0 and T<T0, the ultraviolet sterilization lamp 6 is controlled to be turned off, and the ion generator 7 is controlled to be turned off.

[0086] When W < T0 and T < T0, the air environment at this time is not easy to breed microorganisms, so it is not necessary to sterilize the air, the ultraviolet sterilization lamp 6 can be controlled to be closed, the ion generator 7 can be controlled to be closed, the energy consumption can be saved, and the service life of the ultraviolet sterilization lamp 6 and the ion generator 7 can be prolonged.

[0087] In one embodiment, the step of obtaining the total running time Ttotal of the air conditioner comprises:

[0088] When the air conditioner is started for the first time, the total running time Ttotal of the air conditioner is the total running time from the first start of the air conditioner to the current on state;

[0089] When the air conditioner is not started for the first time, the total running time Ttotal of the air conditioner is the total running time from the last frost self-cleaning end to the current on state;

[0090] When the air conditioner frost self-cleaning ends, the total running time of the air conditioner is cleared and restarted.

[0091] In one embodiment, the control method further comprises:

[0092] When the air conditioner frost self-cleaning ends, the preset time Tpre is shortened by t1, and the adjusted preset time is stored as a new Tpre.

[0093] Since the condition of the indoor heat exchanger 2 will be worse after each frost self-cleaning of the air conditioner, the sterilization time will also be shortened accordingly, in order to sterilize the surface of the indoor heat exchanger 2 in time, the preset total running time for sterilizing the surface of the indoor heat exchanger 2 also needs to be shortened accordingly, therefore, after each sterilization and dust removal of the indoor heat exchanger 2 by the frost self-cleaning mode, the preset total running time needs to be shortened by t1 based on the current preset total running time, and then the adjusted preset total running time is used as a new Tpre for the frost self-cleaning sterilization of the air conditioner.

[0094] It is to be noted that the terms used herein are only for the purpose of describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form, unless the context clearly indicates otherwise, and it should also be understood that when the terms "comprise" and / or "include" are used in the specification, there is a presence of the features, steps, operations, devices, components and / or combinations thereof.

[0095] It should be noted that the terms "first", "second", and the like, used in the description and in the claims of the present application as well as above-mentioned figures are used to distinguish between similar objects and not necessarily for describing a specific sequential or chronological order. It is to be understood that the use of data so designated is not meant to limit a given item described by such data to the same category as other data designated by the same designations, but instead is so designated only for convenience as a means of discriminating between the two series of items that refer to a same data.

[0096] The preferred embodiments of the application described herein are examples of the present application and are not intended to limit the scope of the application. Various modifications and changes can be made thereto by those skilled in the art which freely adapt to the idea and principles of the application, without departing from the spirit and scope thereof. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the application should be included in the protection scope of the application.

Claims

1. A control method of a germicidal air conditioner, characterized by, The bactericidal air conditioner comprises an indoor unit, the indoor unit comprises a shell (1) and an indoor heat exchanger (2), the shell (1) has an air inlet (3) and an air outlet (4), the air outlet (4) is provided with an ion generator (7), an air detector (5) is arranged at the air inlet (3), the indoor heat exchanger (2) is arranged in the shell (1), and an ultraviolet bactericidal lamp (6) is further arranged in the shell (1), and the ultraviolet bactericidal lamp (6) faces the air inlet side and / or the air outlet side of the indoor heat exchanger (2); the control method comprises: Obtaining cumulative running time T of air conditioner 总 ; obtaining the working state of the air conditioner; carrying out bactericidal control on the air conditioner according to the cumulative running time and the working state of the air conditioner, wherein the bactericidal control can be carried out by at least one of the following modes: air conditioner refrigeration defrosting self-cleaning, ultraviolet bactericidal lamp (6) and ion generator (7); the step of carrying out bactericidal control on the air conditioner according to the cumulative running time and the working state of the air conditioner comprises: When T 总 ≥ T 预 , and the air conditioner is in the shutdown state, the air conditioner is started and the refrigeration defrosting self-cleaning is performed, wherein T 预 is a preset cumulative running time of the air conditioner; controlling the indoor heat exchanger (2) to freeze and defrost for T1 time, and then stopping working; after the ice and frost on the indoor heat exchanger (2) are melted, controlling the ultraviolet bactericidal lamp (6) to irradiate the indoor heat exchanger (2) for T2 time; When T 总 ≥ T 预 , and the air conditioner is in the start-up state, the ultraviolet sterilization lamp (6) is controlled to irradiate the indoor heat exchanger (2) for T2 time. carrying out air conditioner refrigeration defrosting self-cleaning after the air conditioner stops working; When T 总 < T 预 , and the air conditioner is in the start-up state, the humidity W and the temperature T of the current indoor air are acquired, wherein T 预 is the preset cumulative running time of the air conditioner; obtaining the air limit value humidity W0 and the air limit value temperature T0 of the air conditioner; carrying out bactericidal control on the air conditioner according to the current indoor air humidity W, temperature T, air limit value humidity W0 and air limit value temperature T0; the step of carrying out bactericidal control on the air conditioner according to the current indoor air humidity W, temperature T, air limit value humidity W0 and air limit value temperature T0 comprises: when W is greater than or equal to T0 or T is greater than or equal to T0, and the air conditioner wind speed gear is strong wind gear or high wind gear, controlling the ultraviolet bactericidal lamp (6) to irradiate the indoor heat exchanger (2), and simultaneously controlling the ion generator (7) to work; when W is greater than or equal to T0 or T is greater than or equal to T0, and the air conditioner wind speed gear is medium wind gear or low wind gear, controlling the ultraviolet bactericidal lamp (6) to be closed, and simultaneously controlling the ion generator (7) to work; when W is less than T0 and T is less than T0, controlling the ultraviolet bactericidal lamp (6) to be closed, and controlling the ion generator (7) to be closed.

2. The control method of a germicidal air conditioner according to claim 1, characterized by, the step of controlling the indoor heat exchanger (2) to freeze and defrost for T1 time, and then stopping working further comprises: heating the indoor heat exchanger (2) to accelerate the melting of the ice and frost on the indoor heat exchanger (2).

3. The control method of a germicidal air conditioner according to claim 1, characterized by, The cumulative running time T of the air conditioner is obtained 总 The steps include: When the air conditioner is started for the first time, the air conditioner accumulates the running time T 总 is the total running time from the first start of the air conditioner to the current on state; When the air conditioner is not started for the first time, the air conditioner accumulates the running time T 总 is the total running time from the end of the last refrigeration defrost self-cleaning to the current on state; when the air conditioner refrigeration defrosting self-cleaning is completed, the cumulative running time of the air conditioner is cleared, and the timing is restarted.

4. The control method of a germicidal air conditioner according to claim 3, characterized by, the control method further comprises: When the air conditioner refrigeration frost self-cleaning is finished, T 预 Shorten t1 time, and pre-store the adjusted preset time as a new T 预 .

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