Method for removing smoke from an air conditioner

Abstract

The application provides a method for removing smoke from an air conditioner. The indoor unit of the air conditioner is provided with a smoke removal device. The smoke removal device has a filtering mode and a cleaning mode. In the filtering mode, the smoke removal device covers the air inlet of the indoor unit, so that the air enters the indoor unit after being filtered by the smoke removal device. In the cleaning mode, the smoke removal device converts the liquid medicine into a mist while filtering the air, so as to clean the air passing through the smoke removal device. The method comprises the following steps: starting the air conditioner and setting a target air concentration; detecting the air concentration of the air inlet and the air concentration of the air outlet of the indoor unit of the air conditioner; judging the air concentration of the air inlet and the air concentration of the air outlet according to the target air concentration, so as to control the smoke removal device to start the filtering mode or the cleaning mode. The application realizes an air conditioner smoke removal scheme which can efficiently and conveniently purify the environmental tobacco smoke residues and odor in the air.

Description

TECHNICAL FIELD

[0001] The present application relates to the air conditioning technical field, and particularly to a smoke removing method of an air conditioner. BACKGROUND

[0002] With the development of science and technology and the improvement of people's health consciousness, the functional requirements for household appliances are increasing. For air conditioners, in addition to the basic functions such as refrigeration and heating, air conditioners also need to improve indoor air quality.

[0003] Second-hand smoke is a mixture of smoke released by the burning end of a cigarette or other tobacco product and exhaled by a smoker. It is also the most widespread and most serious indoor air pollution. Studies have shown that second-hand smoke contains more than 4000 harmful chemical substances and dozens of carcinogens, such as tar, ammonia, nicotine, suspended particulate matter, PM2.5, and polonium-210. Among them, the macromolecular organic matter in the smoke composition is easy to stay in the air and is not easy to volatilize, forming aerosol and seriously affecting the health of non-smoking people. The air purification system of the traditional air conditioner is difficult to effectively remove the environmental tobacco smoke residue and odor in the air. SUMMARY

[0004] The present application provides a smoke removing method of an air conditioner to solve the problem that the air conditioner in the prior art is difficult to purify the environmental tobacco smoke residue and odor in the air, and to realize an air conditioner smoke removing scheme that can efficiently and conveniently purify the environmental tobacco smoke residue and odor in the air.

[0005] The present application provides a smoke removing method of an air conditioner, wherein an indoor unit of the air conditioner is provided with a smoke removing device at an air inlet, and the smoke removing device has a filtering mode and a cleaning mode. In the filtering mode, the smoke removing device covers the air inlet of the indoor unit, so that the air enters the indoor unit after being filtered by the smoke removing device. In the cleaning mode, the smoke removing device converts the liquid medicine into a mist while filtering the air, so as to clean the air passing through the smoke removing device. The method comprises the following steps: starting the air conditioner and setting a target air concentration; detecting the air concentration of the air inlet and the air concentration of the air outlet of the indoor unit of the air conditioner; judging the air concentration of the air inlet and the air concentration of the air outlet according to the target air concentration, so as to control the smoke removing device to start the filtering mode or the cleaning mode.

[0006] According to the smoke removing method of the air conditioner provided by the present application, when either the air concentration of the air inlet or the air concentration of the air outlet is greater than the target air concentration, the filtering mode of the smoke removing device is started.

[0007] According to the smoke removing method of the air conditioner, in the filtering mode, the air inlet flow rate of the smoke removing device is adjusted according to the air concentration of the inlet air and the air concentration of the outlet air.

[0008] According to the smoke removing method of the air conditioner, in the initial stage of the filtering mode, the air inlet flow rate of the smoke removing device is in a low flow rate state, and when the difference between the air concentration of the inlet air and the air concentration of the outlet air is greater than or equal to half of the air concentration of the inlet air, the air inlet flow rate of the smoke removing device is adjusted to a high flow rate state.

[0009] According to the smoke removing method of the air conditioner, in the filtering mode, whether to start the cleaning mode of the smoke removing device is selected according to the air concentration of the inlet air and the air concentration of the outlet air.

[0010] According to the smoke removing method of the air conditioner, after the smoke removing device starts the filtering mode and stably operates for a first time length, the smoke removing device is allowed to start the cleaning mode.

[0011] According to the smoke removing method of the air conditioner, when the difference between the air concentration of the inlet air and the air concentration of the outlet air is less than half of the air concentration of the inlet air, the smoke removing device starts the cleaning mode.

[0012] According to the smoke removing method of the air conditioner, the liquid medicine is recycled in the smoke removing device, the smoke removing device comprises a liquid storage tank, the liquid storage tank is connected with a liquid supply pipe for supplying the liquid medicine and a return pipe for recycling the liquid medicine; the method comprises the following steps: in the cleaning mode, detecting the liquid supply concentration in the liquid supply pipe and the liquid return concentration in the return pipe; and controlling the liquid supply speed of the liquid supply pipe according to the liquid supply concentration and the liquid return concentration.

[0013] According to the smoke removing method of the air conditioner, when the difference between the liquid supply concentration and the liquid return concentration is less than or equal to one fifth of the liquid supply concentration, the liquid supply speed of the liquid medicine is gradually increased.

[0014] According to the smoke removing method of the air conditioner, in the cleaning mode, when the air concentration of the outlet air is less than or equal to the target air concentration, the smoke removing device is controlled to exit the cleaning mode and maintain the filtering mode; and in the filtering mode, when the air concentration of the inlet air is less than or equal to the target air concentration and the duration exceeds a second time length, the smoke removing device is controlled to exit the filtering mode.

[0015] According to the method for removing smoke of the air conditioner provided by the application, the drug liquid is provided with a rated pH range, and the method comprises the following steps: detecting the PH value of the drug liquid in the liquid storage tank before starting the air conditioner and in the cleaning mode; and if the PH value exceeds the rated pH range, reminding the user to replace the drug liquid.

[0016] The method for removing smoke of the air conditioner provided by the application can intelligently remove smoke according to the actual quality of indoor air by controlling the smoke removing device of the air conditioner to execute the filtering mode and the cleaning mode respectively under different air concentrations, and can efficiently and conveniently purify environmental tobacco smoke residue and smell in the air. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the application or prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0018] Figure 1 Fig. 1 is a structural schematic diagram of the smoke removing device and the air conditioner provided by the application;

[0019] Figure 2 Fig. 2 is a sectional structural schematic diagram of the smoke removing device provided by the application;

[0020] Figure 3 Fig. 3 is one of the flow schematic diagrams of the method for removing smoke of the air conditioner provided by the application;

[0021] Figure 4 Fig. 4 is the other of the flow schematic diagrams of the method for removing smoke of the air conditioner provided by the application.

[0022] Corresponding signs:

[0023] 11: oil filter screen; 12: oil guide groove; 13: oil return box; 14: first inclined plate; 15: second inclined plate; 21: atomizer; 22: spray pipe; 23: hydrophobic membrane; 24: liquid storage tank; 25: liquid pump; 26: grid plate; 30: filtering assembly; 40: machine shell; 41: air inlet; 42: air outlet; 50: lifting mechanism. DETAILED DESCRIPTION

[0024] In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be clearly and completely described below in conjunction with the accompanying drawings in the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0025] The air purification effect of the existing air conditioner mainly acts on floating dust in the air, and the treatment effect on environmental tobacco smoke generated by cigarette combustion is poor. Since the components of smoke are mostly macromolecular organic matters, they are more likely to stay in the air and are not easy to volatilize, forming aerosol, which seriously affects the indoor experience and health of non-smoking people.

[0026] The present application can intelligently judge the smoke condition in the indoor air environment based on the concentration change of the air generated by environmental tobacco smoke. The environmental tobacco smoke generated by smoking is efficiently treated to reduce the smoke concentration, avoid the retention of harmful substances generated by smoking, improve the indoor environment, improve the indoor experience comfort of the user, and maintain the health of the user.

[0027] The following will be described in conjunction with Figures 1-2 The smoke removal device of the air conditioner of the preferred embodiment of the present application.

[0028] As shown in Figure 1 , the casing 40 of the smoke removal device of the air conditioner of the present application is preferably installed on the indoor unit of the air conditioner through the lifting mechanism 50, so that the air outlet 42 of the casing 40 can be controlled by the lifting mechanism 50 to be in butt joint or away from each other with the air inlet of the indoor unit. Thus, without modifying the air conditioner, but installing the smoke removal device on the basis of the existing air conditioner indoor unit, the indoor smoke removal work can be carried out through the cooperation of the smoke removal device and the indoor unit of the air conditioner.

[0029] As shown in Figure 1 and Figure 2 , the smoke removal device comprises a casing 40, an oil-gas separation assembly, a spraying assembly and a filtering assembly 30. The oil-gas separation assembly comprises an oil filter screen 11, a first inclined plate 14, a second inclined plate 15, an oil guide groove 12 and an oil return box 13. The spraying assembly comprises an atomizer 21, a spray pipe 22, a hydrophobic membrane 23, a liquid storage tank 24, a liquid pump 25 and a grid plate 26. The filtering assembly 30 comprises a filter screen and / or an adsorptive filter material.

[0030] In the state that the casing 40 of the smoke removal device cooperates with the indoor unit of the air conditioner, the fan of the indoor unit is started to generate air pressure, causing the air to pass through the above-mentioned oil-gas separation assembly, spraying assembly and filtering assembly 30 along the movement path as shown in Figure 2 .

[0031] When the indoor space has environmental tobacco smoke, the oil filter screen 11 can separate oily substances such as tar in the air. When a part of the oily substances accumulates on the oil filter screen 11, the oily substances can gather into oil droplets, flow into the oil guide groove 12 along the first inclined plate 14 and the second inclined plate 15, and then enter the oil return box 13 through the oil guide groove 12. The liquid pump 25 can pump the liquid medicine in the liquid storage tank 24 to the atomizer 21, the atomizer 21 atomizes the liquid medicine, and then makes the spray pipe 22 spray the medicine mist to clean the air. On the one hand, the moisture of the medicine mist can adsorb impurities in the air, and on the other hand, the liquid medicine is preferably acidic, and through the medicine mist, harmful substances such as nicotine in the air can be neutralized, and the smoke smell can be effectively removed. During the process of the cleaned air passing through the hydrophobic membrane 23, the moisture in the air is intercepted above the hydrophobic membrane 23 and flows back into the liquid storage tank 24 along the hydrophobic membrane 23 to repeat the liquid circulation. Finally, the air filtered of the moisture passes through the mesh holes of the mesh disc 26, enters the filter assembly 30, and the filter screen and / or adsorbent filter material of the filter assembly 30 further filter impurities in the air, so that relatively clean air enters the indoor unit of the air conditioner, and the air circulation of the air conditioner and the smoke removal effect of the smoke removal device are utilized, so that the environmental tobacco smoke residual substances and smell in the air can be efficiently and conveniently purified.

[0032] In order to better understand the above technical solutions, the air conditioner smoke removal device and the air conditioner of the present application will be described in detail below in combination with the drawings of the specification and specific embodiments.

[0033] The present application provides an air conditioner smoke removal device, comprising: an oil-gas separation assembly comprising an oil filter screen 11 capable of separating oil mist in the air; a spray assembly comprising an atomizer 21, a spray pipe 22, and a hydrophobic membrane 23 capable of separating liquid droplets in the air, the atomizer 21 being capable of atomizing liquid medicine and releasing medicine mist through the spray pipe 22; a housing 40 having an air inlet 41 and an air outlet 42, the oil filter screen 11, the spray pipe 22, and the hydrophobic membrane 23 being sequentially distributed between the air inlet 41 and the air outlet 42 in the housing 40; and the air outlet 42 being capable of being docked with the air inlet of the indoor unit of the air conditioner.

[0034] The smoke removal device is docked with the air inlet of the indoor unit of the air conditioner through the air outlet 42 of the housing 40, so that during the operation of the air conditioner, the air first passes through the housing 40 and then enters the indoor unit. The smoke removal device can filter out the oil mist of tar produced by the burning of tobacco in the air by using the oil filter screen 11, and clean the air by using the medicine mist released by the atomizer 21 and the spray pipe 22 to remove and neutralize the residual smoke smell and harmful substances in the air, and intercept the moisture mixed into the air by the hydrophobic membrane 23. The combination of the smoke removal device and the indoor unit of the air conditioner is simple, and the air conditioner installed with the above smoke removal device can efficiently and conveniently purify the environmental tobacco smoke residual substances and smell in the air.

[0035] As shown in Figure 1 and Figure 2 , a plurality of nozzles are uniformly distributed on the nozzle 22 along the length direction of the nozzle 22, and the plurality of nozzles are preferably arranged in the horizontal radial direction of the nozzle 22, so that a wall of the pesticide mist can be formed on the air movement path during the spraying process, and the action efficiency of the pesticide mist on the moving air can be improved.

[0036] According to the smoke removing device of the air conditioner provided by the present application, as shown in Figure 1 and Figure 2 , the oil-gas separation assembly preferably comprises an oil guide groove 12 installed between the oil filter screen 11 and the nozzle 22, so that the oil liquid dripping from the oil filter screen 11 can be recovered. The oily substances in the smoke have high adsorption, and the tar substances in the air passing through the oil filter screen 11 can be adsorbed by the oil filter screen 11. When the oily substances accumulate too much, the oil liquid can be collected by the oil guide groove 12.

[0037] The collected oil liquid can be stored in the oil guide groove 12 for regular cleaning, or according to the smoke removing device of the air conditioner provided by the present application, the oil guide groove 12 is preferably arranged to be inclined relative to the horizontal plane, so that the oil liquid flows to the lower side. The angle of the oil guide groove 12 relative to the horizontal plane can be 1-10 degrees, and preferably 3-5 degrees. The horizontal plane in the present application is a plane perpendicular to the gravity. The lower side of the oil guide groove 12 is preferably connected with an oil return box 13, so that the oil liquid in the oil guide groove 12 can be guided into the oil return box 13. As shown in Figure 1 , the oil return box 13 is located on one side of the casing 40, and the oil return box 13 is preferably matched with the casing 40 through a quick plug structure, so that the smoke removing device can be easily disassembled, replaced and maintained.

[0038] According to the smoke removing device of the air conditioner provided by the present application, the oil filter screen 11 and the oil guide groove 12 are preferably provided with a first inclined plate 14 and a second inclined plate 15. As shown in Figure 2 , the first inclined plate 14 and the second inclined plate 15 are arranged at different height positions on the opposite inner surfaces of the casing 40, so as to reserve a space allowing air to pass between the first inclined plate 14 and the second inclined plate 15. At least a part of the first inclined plate 14 and the second inclined plate 15 overlap in the projection range on the horizontal plane, so that the oil droplets dripping from the oil filter screen 11 can be completely received by the first inclined plate 14 and the second inclined plate 15, and finally flow into the oil guide groove 12 along the inclined surface of the first inclined plate 14 and the second inclined plate 15.

[0039] The pesticide liquid of the spraying assembly of the smoke removing device can be stored in the atomizer 21, or according to the smoke removing device of the air conditioner provided by the present application, the spraying assembly preferably comprises a liquid storage tank 24 and a liquid pump 25. As shown in Figure 1As shown, the liquid tank 24 is used to store the liquid medicine, and a liquid supply pipe is connected between the liquid pump 25 and the atomizer 21, so that the liquid medicine in the liquid tank 24 can be supplied to the atomizer 21. The liquid pump 25 is preferably a variable frequency pump, so as to provide different output powers, thereby enabling the spray assembly to change the circulation speed of the liquid medicine according to different smoke concentration working environments, and saving energy consumption.

[0040] In the above smoke removal device, after the air passes through the hydrophobic membrane 23, the moisture is left on the surface of the hydrophobic membrane 23, and when the moisture accumulates too much, it will affect the air permeability of the hydrophobic membrane 23. According to the smoke removal device of the air conditioner provided by the present application, as shown in Figure 2 As shown, the spray assembly preferably comprises a grid plate 26, which is arranged below the spray pipe 22 and is inclined relative to the horizontal plane, and the hydrophobic membrane 23 is covered on the grid plate 26. The grid plate 26 can support the hydrophobic membrane 23 and enable the accumulated moisture on the hydrophobic membrane 23 to flow along the inclined surface. The angle of the grid plate 26 relative to the horizontal plane can be 1-10 degrees, preferably 3-5 degrees.

[0041] A reflux pipe is arranged between the lower side of the grid plate 26 and the liquid tank 24, so that the liquid droplets separated by the hydrophobic membrane 23 flow along the reflux pipe into the liquid tank 24, forming a circulation system in which the liquid medicine can be reused. In the running state of the spray assembly, the liquid medicine stored in the liquid tank 24 is guided by the liquid pump 25 to the atomizer 21, the atomizer 21 converts the liquid medicine into a mist, and the mist is sprayed out through the spray pipe 22 to adsorb or neutralize impurities in the air. The cleaned mist is intercepted on the hydrophobic membrane 23 and accumulates into liquid medicine to return to the liquid tank 24. The liquid medicine in the liquid tank 24 can be used for a period of time before it deteriorates, without the need for frequent addition, thereby reducing maintenance costs.

[0042] The liquid medicine can be only liquid water, which uses water mist to adsorb impurities in the air, or the liquid medicine can also be a chemical solution that can react with and neutralize harmful substances in the smoke.

[0043] According to the smoke removal device of the air conditioner provided by the present application, the liquid medicine is preferably an acidic liquid, so as to react with nicotine in the smoke to remove the smell. An acid-base detector is preferably arranged in the liquid tank 24 to detect the change of the acid-base degree of the liquid medicine in the liquid tank 24. As shown in Figure 1 As shown, a display window is preferably arranged on the liquid tank 24 to display the change of the acid-base degree of the liquid medicine, so as to intuitively display the detection result of the acid-base detector to the user, thereby facilitating the user to determine whether the liquid medicine needs to be replaced.

[0044] According to the present application, a smoke removing device for an air conditioner is provided, which comprises a filtering assembly 30 for further filtering air after oil filtering and cleaning. The filtering assembly can comprise a filtering screen and / or an adsorptive filter material for adsorbing and filtering harmful substances remaining in the air. The filtering screen can be made of non-woven fabric, melt-blown fabric, etc., and the adsorptive filter material can be activated carbon, zeolite, etc. Preferably, the filtering assembly is a composite filter material comprising activated carbon non-woven fabric, activated carbon filtering cotton and activated carbon fiber, etc.

[0045] According to the present application, a smoke removing device for an air conditioner is provided, at least one side of the oil filtering screen 11 is preferably provided with an axial flow fan 16 capable of sending air to the oil filtering screen 11 in the horizontal direction. As shown in Figure 2 The air inlets 41 of the casing 40 can be formed at the top and side of the casing 40 respectively, so as to increase the air inflow.

[0046] The axial flow fan 16 can be arranged at the air inlet 41 of the side of the casing 40. During operation of the device, in addition to the air movement in the smoke removing device realized by the negative pressure of the indoor unit, the axial flow fan 16 can further increase the air inflow to the oil filtering screen 11, thereby improving the smoke removing efficiency.

[0047] According to the present application, a smoke removing device for an air conditioner is provided, which preferably comprises a lifting mechanism 50 installed between the casing 40 and the air conditioner, so that the installation state and non-installation state of the smoke removing device and the indoor unit of the air conditioner can be conveniently switched by the lifting mechanism 50.

[0048] The lifting mechanism 50 has an expanded state and a contracted state. As shown in Figure 2 In the expanded state, the lifting mechanism 50 supports the air outlet 42 of the casing 40 away from the air inlet of the indoor unit, so that the air conditioner can be normally used. In the contracted state, the air outlet 42 is in abutting cooperation with the air inlet of the indoor unit, so as to provide the smoke removing function based on the air circulation of the indoor unit during operation of the air conditioner.

[0049] The lifting mechanism 50 can be a support with manually adjustable lifting height, or a support mechanism with automatically controlled height by a driver, such as a lead screw mechanism, an electric push rod, a gear and rack mechanism, etc.

[0050] According to the present application, a smoke removing device for an air conditioner is provided, the lifting mechanism 50 comprises a plurality of memory metal rods capable of being connected between the casing 40 and the air conditioner, the memory metal rods are in the expanded state at normal temperature and are converted to the contracted state after being heated. When smoke removing is needed, the memory metal rods can be heated or current is passed through the memory metal rods to make them generate heat by themselves, so that the lifting mechanism 50 is converted to the contracted state, and the smoke removing device is cooperated with the indoor unit. When smoke removing is not needed, the memory metal rods are in the expanded state at normal temperature, supporting the smoke removing device away from the indoor unit, so that the air conditioner can normally work.

[0051] Based on the smoke removing device of the air conditioner of the present application, the present application further provides an air conditioner, which comprises an indoor unit and an outdoor unit, and the indoor unit is provided with any one of the smoke removing devices of the air conditioner as described above. The air conditioner can be retrofitted by adding the smoke removing device of the present application to the existing air conditioner to achieve the smoke removing function. The combination of the smoke removing device and the indoor unit of the air conditioner is simple, and the air conditioner provided with the smoke removing device as described above can achieve efficient and convenient purification of the environmental tobacco smoke residues and odor in the air without modifying the internal structure.

[0052] Based on the smoke removing device of the air conditioner and the air conditioner, the present application further provides a smoke removing method of the air conditioner, which will be described below. The smoke removing method of the air conditioner described below can be correspondingly referred to the smoke removing device of the air conditioner and the air conditioner described above.

[0053] According to the smoke removing method of the air conditioner of the present application, the indoor unit of the air conditioner is provided with any one of the smoke removing devices as described above, and the smoke removing device has a filtering mode and a cleaning mode. In the filtering mode, the spraying assembly is not working, and the smoke removing device covers the air inlet of the indoor unit to make the air enter the indoor unit after being filtered by the smoke removing device. In the cleaning mode, the smoke removing device filters the air while starting the spraying assembly to convert the liquid medicine into the medicine mist to clean the air passing through the smoke removing device.

[0054] As shown in Figure 1 The smoke removing method comprises the following steps: starting the air conditioner and setting a target air concentration; detecting the air concentration of the air inlet and the air concentration of the air outlet of the indoor unit of the air conditioner; and judging the air concentration of the air inlet and the air concentration of the air outlet according to the target air concentration to control the smoke removing device to start the filtering mode or the cleaning mode. According to the smoke removing method, the air quality sensor can be arranged at the air inlet of the indoor unit (the air inlet 41 of the smoke removing device when cooperating with the smoke removing device), and the indoor air quality can be monitored under the operation of the air conditioner.

[0055] The air concentration of the air inlet is the concentration of the current indoor air. When the air concentration of the air inlet is higher than the target air concentration, it is known that the current indoor air quality is poor, and the smoke removing device can be started to cooperate with the indoor unit of the air conditioner to remove the smoke from the indoor air.

[0056] In the filtering mode, the air inlet of the indoor unit is connected with the air outlet 42 of the smoke removing device, so that the indoor air first passes through the filter of the smoke removing device and then enters the air supply of the indoor unit. Thus, the indoor air can be continuously filtered by the operation of the air conditioner under the filtering effect of the smoke removing device, so as to reduce harmful substances in the air, such as environmental tobacco smoke generated by smoking. In the cleaning mode, the spray assembly of the smoke removing device is started to clean the passing air by the drug mist to adsorb and / or neutralize the harmful substances in the air while filtering the air.

[0057] In the case where the smoke removing device is not started, the difference between the air inlet concentration and the air outlet concentration of the indoor unit is only related to the air filtering performance of the indoor unit itself. The air removing device can also be controlled to be started or not by comparing the air outlet concentration with the target air concentration. According to the smoke removing method of the air conditioner provided by the present application, when either the air inlet concentration or the air outlet concentration is greater than the target air concentration, the filtering mode of the smoke removing device is started.

[0058] In addition, the highest air concentration higher than the target air concentration can also be preset. When either the air inlet concentration or the air outlet concentration exceeds the highest air concentration, the cleaning mode of the smoke removing device can be controlled to be quickly started to efficiently treat the indoor air problem.

[0059] According to the smoke removing method of the air conditioner provided by the present application, in the filtering mode, the air inlet flow rate of the smoke removing device is adjusted according to the air inlet concentration and the air outlet concentration. During the filtering process, the smoke removing device inevitably affects the air inlet amount of the indoor unit. At this time, the air inlet amount of the smoke removing device can be increased by the axial flow fan 16 as recorded in the foregoing, so as to reduce the influence on the air inlet amount of the indoor unit, and further to adjust the smoke removing efficiency.

[0060] Preferably, in the initial stage of the filtering mode, the air inlet flow rate of the smoke removing device is in a low flow rate state. When the difference between the air inlet concentration and the air outlet concentration is greater than or equal to half of the air inlet concentration, it can be judged that the current smoke removing efficiency is low. At this time, the axial flow fan 16 is started to adjust the air inlet flow rate of the smoke removing device to a high flow rate state, so as to increase the filtering amount of the indoor space per unit time and improve the smoke removing efficiency.

[0061] According to the method for removing smoke provided by the application, in the filtering mode, whether to start the cleaning mode of the smoke removing device is selected according to the inlet air concentration and the outlet air concentration. By detecting the inlet air concentration and the outlet air concentration during the filtering mode is effective, whether the efficiency of the current filtering mode for removing smoke from indoor air meets the demand can be determined. For example, after the filtering mode is started for a period of time, the decrease of the inlet air concentration is not ideal, or in the filtering mode, the difference between the inlet air concentration and the outlet air concentration is small. For example, when the difference between the inlet air concentration and the outlet air concentration is less than half of the inlet air concentration, the smoke removing device starts the cleaning mode.

[0062] Preferably, as shown in the smoke removing device starts the filtering mode and stably operates for a first duration, the cleaning mode of the smoke removing device is allowed to be started. The first duration can be 1-10 minutes, preferably 5 minutes. The waste of energy and liquid is prevented due to the inaccuracy of the air concentration caused by the uneven indoor air concentration. Figure 1

[0063] According to the method for removing smoke provided by the application, the liquid medicine is recycled in the smoke removing device, and the smoke removing device comprises a liquid storage tank 24 connected with a liquid supply pipe for providing the liquid medicine and a backflow pipe for recycling the liquid medicine. The method for removing smoke comprises: in the cleaning mode, detecting the liquid supply concentration in the liquid supply pipe and the liquid return concentration in the backflow pipe; and according to the liquid supply concentration and the liquid return concentration, controlling the liquid supply speed of the liquid supply pipe.

[0064] The acidic liquid medicine reacts with alkaline harmful substances such as nicotine in the air, which consumes the acidic chemicals in the solution. By arranging liquid concentration sensors in the liquid supply pipe and the backflow pipe respectively, the concentration change of the acidic chemicals in the liquid medicine can be monitored in real time, so that the neutralization efficiency of the liquid medicine in the recycling process reacting with the air can be determined.

[0065] Preferably, the difference between the liquid supply concentration and the liquid return concentration is less than or equal to one fifth of the liquid supply concentration, and if the neutralization efficiency is not up to standard, the liquid supply speed of the liquid medicine is gradually increased, so that the generation amount of the liquid fog is increased, thereby improving the contact efficiency of the liquid fog and the air, and further improving the neutralization efficiency. The liquid pump 25 can be provided with multiple variable frequency gears, and in the initial start, it is operated at a low gear, that is, the liquid medicine is provided at the lowest liquid supply speed. If the neutralization efficiency is not up to standard, the variable frequency gear of the liquid pump 25 is gradually increased, so that the liquid supply speed of the liquid medicine is gradually increased, until the neutralization efficiency meets the requirements.

[0066] As shown in the smoke removing device starts the filtering mode and stably operates for a first duration, the cleaning mode of the smoke removing device is allowed to be started. The first duration can be 1-10 minutes, preferably 5 minutes. The waste of energy and liquid is prevented due to the inaccuracy of the air concentration caused by the uneven indoor air concentration. Figure 1 Figure 4 Figure 4 ​As shown, the method for removing smoke provided by the air conditioner according to the present application comprises: in the cleaning mode, if the concentration of the outflow air is less than or equal to the target air concentration, the smoke removal device is controlled to exit the cleaning mode and maintain the filtering mode; in the filtering mode, if the concentration of the inflow air is less than or equal to the target air concentration and the duration exceeds the second time length, the smoke removal device is controlled to exit the filtering mode. According to the method for removing smoke of the air conditioner, when the smoke removal task is about to be completed, the concentration of harmful substances in the air is reduced, at which time the consumption of the smoke removal device can be gradually reduced, the efficiency of smoke removal is flexibly adjusted, and the utilization efficiency of energy and liquid medicine is optimized.

[0067] The method for removing smoke of the air conditioner according to the present application, the liquid medicine is provided with a rated pH range, the method comprises: detecting the PH value of the liquid medicine in the liquid storage tank 24 before starting the air conditioner and in the cleaning mode; if the PH value exceeds the rated pH range, the user is reminded to replace the liquid medicine. According to the smoke removal device provided by the present application, the change of the pH of the liquid medicine in the liquid storage tank 24 can be detected by the pH detector described above, and the user is reminded to replace the liquid medicine in time through the display window or other sound and light reminding mode, so as to guarantee the smoke removal performance of the smoke removal device.

[0068] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for removing smoke from an air conditioner, characterized in that, The indoor unit of the air conditioner is equipped with a smoke removal device, which has a filtration mode and a cleaning mode. The smoke removal device includes an oil-gas separation component, a spray component, and a filter component. The oil-gas separation component includes an oil filter screen, a first inclined plate, a second inclined plate, an oil guide groove, and an oil return box. The spray component includes an atomizer, a spray pipe, a hydrophobic membrane, a liquid storage tank, and a liquid pump. In the filtration mode, the smoke removal device covers the air inlet of the indoor unit, and the oil filter can separate oily substances in the air. The oily substances flow into the oil guide groove and enter the oil return box along the first and second inclined plates, so that the air enters the indoor unit after being filtered by the smoke removal device. In the cleaning mode, while the smoke removal device is filtering the air, the liquid pump pumps the acidic medicine in the storage tank to the atomizer. The atomizer converts the medicine into a mist and sprays it out through the nozzle to clean the air passing through the smoke removal device. When the cleaned air passes through the hydrophobic membrane, the moisture is intercepted and flows back into the storage tank along the hydrophobic membrane to repeat the medicine circulation. The methods include: Turn on the air conditioner and set the target air concentration; The concentration of incoming and outgoing air in the indoor unit of an air conditioner is detected, wherein the air concentration refers to the concentration of ambient tobacco smoke in the air; The intake air concentration and the exhaust air concentration are determined based on the target air concentration in order to control the smoke removal device to start the filtration mode or the cleaning mode. Specifically, when either the intake air concentration or the exhaust air concentration is greater than the target air concentration, the filtration mode of the smoke removal device is activated; in the filtration mode, when the difference between the intake air concentration and the exhaust air concentration is less than half of the intake air concentration, the cleaning mode of the smoke removal device is activated.

2. The smoke removal method for an air conditioner according to claim 1, characterized in that, In the filtration mode, the intake airflow rate of the smoke removal device is adjusted according to the intake air concentration and the exhaust air concentration.

3. The smoke removal method for an air conditioner according to claim 2, characterized in that, In the initial stage of the filtration mode, the airflow velocity of the smoke removal device is at a low velocity. When the difference between the intake air concentration and the outlet air concentration is greater than or equal to half of the intake air concentration, the intake air velocity of the smoke removal device is adjusted to a high velocity state.

4. The smoke removal method for an air conditioner according to claim 1, characterized in that, After the smoke removal device starts the filtration mode and runs stably for a first period of time, the smoke removal device is allowed to start the cleaning mode.

5. The smoke removal method for an air conditioner according to claim 1, characterized in that, The liquid medicine is circulated in the smoke removal device, which includes a storage tank (24) and is connected to a supply pipe for supplying the liquid medicine and a return pipe for recovering the liquid medicine. The methods include: In the cleaning mode, the concentration of the supplied liquid in the supply pipe and the concentration of the returned liquid in the return pipe are detected; The supply speed of the supply pipe is controlled according to the supply concentration and the return concentration.

6. The smoke removal method for an air conditioner according to claim 5, characterized in that, If the difference between the supply concentration and the return concentration is less than or equal to one-fifth of the supply concentration, the supply rate of the drug solution is gradually increased.

7. The smoke removal method for an air conditioner according to any one of claims 1-6, characterized in that, include: In the cleaning mode, if the outlet air concentration is less than or equal to the target air concentration, the smoke removal device is controlled to exit the cleaning mode and maintain the filtration mode. In the filtration mode, if the intake air concentration is less than or equal to the target air concentration and the duration exceeds the second duration, the smoke removal device is controlled to exit the filtration mode.

8. The smoke removal method for an air conditioner according to claim 5, characterized in that, The solution has a rated pH range, and the method includes: Before starting the air conditioner and during the cleaning mode, the pH value of the medicine solution in the storage tank (24) is detected; If the pH value exceeds the rated acidity / alkalinity range, the user is reminded to replace the medication.

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