Indoor unit of air conditioner, air conditioner and peculiar smell removal control method of air conditioner

Abstract

The invention relates to an indoor unit of an air conditioner and an air conditioner peculiar smell removal control method, the indoor unit comprises an air guide plate, an air inlet grille, a sterilization and peculiar smell removal module and a negative ion generator, and the sterilization and peculiar smell removal module comprises an ozone generator and is used for generating ozone for sterilization and peculiar smell removal when the air conditioner is in a shutdown state; the negative ion generator is used for decomposing ozone into oxygen in the ozone removal mode. The air conditioner peculiar smell removal control method comprises the steps that when the air conditioner stops, the air guide plate and the air inlet grille are closed, and the sterilization and peculiar smell removal mode is started and switched to the ozone removal mode after running for a period of time. Through combined use of ozone and negative ion technologies and an intelligent control and dynamic adjustment mechanism, the problem that in the prior art, a split type air conditioner indoor unit generates peculiar smell due to moisture accumulation is effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to an indoor unit of an air conditioner, an air conditioner and an air conditioner deodorization control method. Background Art

[0002] At present, during the operation of split air conditioners, especially in cooling mode, the accumulation of moisture inside the air conditioning system, such as the retention of condensed water on the indoor unit evaporator, may cause bacteria to grow and odor to be generated. This odor is often blown into the room as the indoor unit fan continues to run after the air conditioner reaches the set temperature point and automatically stops, affecting the comfort of the living environment. In response to the problem of odor from air conditioners, the existing technology focuses on the field of automotive air conditioning, using a blower to discharge odorous gases out of the car through a drain, such as the patent with publication number CN113752784A. For the field of central air conditioning or fresh air systems, the relevant technology focuses on sterilization and odor removal in the pipeline, using ozone for operation, such as the patent with publication number CN111351196A, which starts the ozone generator and ozone degradation device during the equipment operation interval to treat the main ventilation duct and ventilation branch pipe.

[0003] However, these technical solutions are not fully applicable to the field of household air conditioning. The main reasons are as follows:

[0004] (1) Household air conditioners, especially wall-mounted air conditioners, mainly circulate air in the room when working. The source of odor is located inside the indoor unit, such as the evaporator or filter, and there is no direct ventilation duct available;

[0005] (2) The time required to deal with odor is closely related to the downtime of the air conditioner. Excessive treatment time will have a negative impact on user comfort.

[0006] (3) Due to the internal circulation characteristics of household air conditioners, the air released after odor treatment must meet indoor air quality standards to ensure that user health is not affected.

[0007] In view of the special usage environment and requirements of household air conditioners, the deodorization methods in the existing technology have certain limitations, and it is necessary to develop deodorization control methods that are more suitable for household scenarios. Summary of the invention

[0008] The main purpose of the present invention is to provide an indoor unit of an air conditioner, an air conditioner and an air conditioner deodorization control method to solve the technical problem in the prior art that the indoor unit of a split air conditioner generates odor due to the accumulation of moisture.

[0009] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, an indoor unit of an air conditioner is provided, comprising an air guide plate and an air inlet grille, the indoor unit also comprising: a sterilization and deodorization module, comprising an ozone generator for generating ozone for sterilization and deodorization, and arranged on the inner side of the air inlet of the indoor unit; a negative ion generator, arranged on the inner side of the air inlet of the indoor unit, and used to decompose ozone into oxygen in the deozonation mode; a control module, used to determine whether the air conditioner is in a shutdown state in which it stops when a temperature point set by a user is reached, the control module is respectively connected to the sterilization and deodorization module and the negative ion generator, and when the air conditioner is in the shutdown state, the sterilization and deodorization module and the negative ion generator are controlled to be turned on and off in turn, so that the air conditioner enters the sterilization and deodorization mode and the deozonation mode in turn.

[0010] Furthermore, the sterilization and deodorization module also includes: an electric heater for removing moisture and odor inside the indoor unit, which is arranged in the shell of the indoor unit and operates in a sterilization and deodorization mode.

[0011] Furthermore, the indoor unit is equipped with a concentration monitoring device, which is arranged in the housing of the indoor unit and is used to monitor the odor concentration C inside the indoor unit. x and ozone concentration C y The control module is connected to the concentration monitoring device to obtain the odor concentration C monitored by the concentration monitoring device. x and ozone concentration C y , according to the odor concentration C x The size of the ozone generator controls the opening degree, and according to the ozone concentration C y The size controls the degree of opening of the negative ion generator.

[0012] Furthermore, the concentration monitoring device includes a plurality of concentration monitoring probes, and the distance between the detection surface of the concentration monitoring probe and the air inlet grille and / or the air outlet of the air conditioner is 1 cm to 5 cm.

[0013] Furthermore, multiple concentration monitoring probes are divided into multiple rows, the air inlet grille includes multiple air inlet plates arranged in parallel, and the multiple rows of concentration monitoring probes are arranged one-to-one corresponding to the multiple air inlet plates; wherein, the multiple concentration monitoring probes in each row of concentration monitoring probes are arranged along the extension direction of the corresponding air inlet plates; and / or, the number of concentration monitoring probes is 40-80.

[0014] A second aspect of the present application provides an air conditioner, comprising the indoor unit described above.

[0015] The third aspect of the present application provides an air conditioning deodorization control method, which is applicable to the above-mentioned air conditioner. The air conditioning deodorization control method includes: judging whether the air conditioner is in a shutdown state in which the air conditioner is shut down due to reaching a temperature point set by a user; when the air conditioner is in the shutdown state, starting the sterilization and deodorization module of the air conditioner to make the air conditioner enter a sterilization and deodorization mode; after the air conditioner runs in the sterilization and deodorization mode for a first predetermined period of time, turning off the sterilization and deodorization module and starting the negative ion generator of the air conditioner to make the air conditioner enter an ozone deodorization mode.

[0016] Furthermore, the air conditioner deodorization control method also includes: controlling the air conditioner to operate in the deozonation mode for a second predetermined time period; wherein the first predetermined time period plus the second predetermined time period is less than or equal to the interval time period between the air conditioner entering the shutdown state and the next expected startup.

[0017] Furthermore, the air conditioner odor removal control method also includes: determining whether the indoor ambient temperature is outside a preset temperature range; when the indoor ambient temperature is outside the preset temperature range, starting the air conditioner again.

[0018] Further, the odor concentration C in the indoor unit is detected x ; Determine the odor concentration C x Is it greater than the critical concentration C 临界 When the odor concentration C x Greater than the critical concentration C 临界 When the odor concentration C x Less than the critical concentration C 临界 When the ozone opening valve of the ozone generator is controlled to open to a second initial opening, the electric heater of the sterilization and deodorization module is turned on; wherein the first initial opening is greater than the second initial opening.

[0019] Further, when the odor concentration C x Greater than the critical concentration C 临界 When the ozone generator is turned on, the real-time opening θ1 of the ozone opening valve is controlled to be proportional to the odor concentration C x The relationship between them is: θ1=C x / C0; when the odor concentration C x Less than the critical concentration C 临界 When the ozone generator is turned on, the real-time opening θ2 of the ozone opening valve is controlled to be proportional to the odor concentration C x The relationship between is: θ2 = 20% × C x / C0; wherein C0 is the initial odor concentration detected when the sterilization and deodorization mode is turned on.

[0020] Furthermore, the air conditioner deodorization control method further includes: when the odor concentration is less than or equal to the first acceptable concentration, and the operation time of the air conditioner in the sterilization and deodorization mode is less than or equal to the first predetermined time period, turning off the sterilization and deodorization module; the critical concentration C 临界 Set to 0.5 mg / m 3 .

[0021] Furthermore, after the air conditioner enters the deozonation mode, the air conditioner deodorization control method further includes: detecting the ozone concentration in the indoor unit to control the opening degree of the negative ion generator according to the ozone concentration.

[0022] Furthermore, after the air conditioner enters the deozonation mode, the air conditioner deodorization control method also includes: when the ozone concentration is less than or equal to a second acceptable concentration, and the operating time of the air conditioner in the deozonation mode is less than or equal to a second predetermined time period, controlling the negative ion generator to turn off; wherein the first predetermined time period plus the second predetermined time period is less than or equal to the interval time period between the air conditioner entering the shutdown state and the next expected startup.

[0023] Furthermore, the relationship between the opening degree of the negative ion generator and the ozone concentration in the indoor unit is as follows: the opening degree is determined by the ozone concentration C y and the initial ozone concentration C 00 The initial ozone concentration C is determined by the ratio of 00 This is the ozone concentration detected when the de-ozone mode is on.

[0024] By applying the technical solution of the present invention, the air guide plate and the air inlet grille are responsible for adjusting the air flow direction and controlling the amount of air entering when the air conditioner is operating normally, but in the sterilization and deodorization mode, they are closed in coordination to create a closed internal environment to ensure that ozone can be effectively distributed inside the indoor unit to achieve thorough sterilization and deodorization. This closed mode avoids the diffusion of ozone and odor into the indoor space, thereby not affecting the comfort and health of indoor personnel. The ozone generated by the ozone generator has strong oxidizing properties and can kill bacteria and viruses in the air, while decomposing odor molecules and effectively removing odors generated inside the indoor unit. When the air conditioner is shut down, the ozone generator is first started to purify using the sterilization and deodorization capabilities of ozone. The negative ion generator works in the deozonation mode to reduce ozone to oxygen, avoiding the potential harm of ozone residue to the human body. Negative ions themselves have an adsorption and purification effect on odors, smoke and dust in the air, further improving the indoor air quality. The present application effectively solves the problem of odor generation due to moisture accumulation in the indoor unit of a split-type air conditioner in the prior art by combining the use of ozone and negative ion technologies, as well as intelligent control and dynamic adjustment mechanisms. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0026] Figure 1 A structural schematic diagram of an indoor unit of an air conditioner according to the present invention from one perspective is shown;

[0027] Figure 2 A schematic structural diagram of an indoor unit of an air conditioner according to the present invention from another perspective is shown;

[0028] Figure 3 A schematic structural diagram of an air conditioner deodorization control method according to the present invention is shown;

[0029] Figure 4 A schematic diagram showing a flow chart of a sterilization and deodorization mode of an air conditioner deodorization control method according to the present invention; and

[0030] Figure 5 A schematic flow chart of the deozonation mode of the air conditioner deodorization control method according to the present invention is shown.

[0031] The above drawings include the following reference numerals:

[0032] 1. Air guide plate; 2. Air inlet grille; 21. Air inlet plate; 3. Ozone generator; 31. Ozone opening valve; 4. Air inlet; 5. Negative ion generator; 51. Negative ion opening valve; 6. Concentration monitoring probe; 7. Air outlet. DETAILED DESCRIPTION

[0033] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0034] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0035] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0036] Please refer to Figures 1 to 5 Embodiment 1 of the present invention provides an indoor unit of an air conditioner, including an air guide plate 1 and an air inlet grille 2. Figure 1 and Figure 2 As shown, the indoor unit also includes: a sterilization and deodorization module, including an ozone generator 3, which is arranged on the inner side of the air inlet 4 of the indoor unit, and is used to generate ozone for sterilization and deodorization; a negative ion generator 5, which is arranged on the inner side of the air inlet 4 of the indoor unit, and is used to decompose ozone into oxygen in the deozonation mode. Through this design, the air conditioner can effectively purify the indoor air even when it is stopped, which is particularly suitable for places such as hospitals, schools, and offices that need to keep the air fresh continuously, thereby improving the user experience. Specifically, this design can significantly reduce the microorganisms and harmful gases in the indoor air in practical applications. For example, bacteria and viruses in the hospital environment will be effectively controlled, providing a safer air environment for patients and medical staff. At the same time, the air quality in schools and offices will also be improved, which is conducive to improving learning and work efficiency.

[0037] The indoor unit of the air conditioner provided by the embodiment of the present invention effectively solves the problem of odor generation due to moisture accumulation in the split-type air conditioner indoor unit in the prior art through the combined use of ozone and negative ion technologies, as well as intelligent control and dynamic adjustment mechanisms.

[0038] In the above embodiment, the air guide plate 1 and the air inlet grille 2 are responsible for adjusting the air flow direction and controlling the amount of air entering when the air conditioner is operating normally, but in the sterilization and deodorization mode, they are closed in coordination to create a closed internal environment to ensure that ozone can be effectively distributed inside the indoor unit to achieve thorough sterilization and deodorization. This closed mode avoids the diffusion of ozone and odor into the indoor space, so as not to affect the comfort and health of indoor personnel. The ozone generated by the ozone generator 3 has strong oxidizing properties and can kill bacteria and viruses in the air, while decomposing odor molecules and effectively removing odors generated inside the indoor unit. When the air conditioner is shut down, the ozone generator 3 is started first and purifies using the sterilization and deodorization capabilities of ozone. The negative ion generator 5 works in the deozonation mode to reduce ozone to oxygen, avoiding the potential harm of ozone residue to the human body. Negative ions themselves have an adsorption and purification effect on odors, smoke, etc. in the air, further improving the indoor air quality.

[0039] Specifically, the sterilization and deodorization module also includes: an electric heater, which is arranged in the housing of the indoor unit to remove moisture and odor inside the indoor unit in the sterilization and deodorization mode. The addition of the electric heater can not only accelerate the sterilization effect of ozone, but also effectively remove moisture and odor inside the air conditioner. It is particularly suitable for humid and odorous environments, such as the plum rain season in the south or families with frequent cooking, which further enhances the purification ability of the air conditioner. Specifically, the use of electric heaters can significantly improve air quality problems in humid environments. For example, in the plum rain season, mold and bacteria are prone to grow inside the air conditioner. The electric heater can effectively dry the internal environment and reduce the chance of mold growth. At the same time, for families with frequent cooking, the electric heater can quickly remove odors such as kitchen fumes to keep the home air fresh.

[0040] Specifically, the indoor unit is equipped with a concentration monitoring device, which is arranged in the housing of the indoor unit and is used to monitor the odor concentration C inside the indoor unit. x and ozone concentration C y The control module is connected to the concentration monitoring device to obtain the odor concentration C monitored by the concentration monitoring device. x and ozone concentration C y , according to the odor concentration C x The size of the ozone generator 3 controls the opening of the ozone opening valve 31, and according to the ozone concentration C y The size of controls the opening of the negative ion opening valve 51 of the negative ion generator 5. The introduction of the concentration monitoring device enables the air conditioner to intelligently adjust the purification mode according to the actual odor and ozone concentration in the room, which is suitable for various indoor environments and improves the purification efficiency and safety. Specifically, through the concentration monitoring device, the air conditioner can monitor the indoor environment in real time and intelligently adjust the purification strategy. For example, in a home environment with many pets, the odor concentration may be high, and the air conditioner will automatically increase the amount of ozone produced. In a room with good air quality, the air conditioner will reduce ozone production to avoid energy waste and ensure the health and safety of indoor air.

[0041] Specifically, the concentration monitoring device includes a plurality of concentration monitoring probes 6, and the distance between the detection surface of the concentration monitoring probe 6 and the air inlet grille 2 and / or the air outlet 7 of the air conditioner is 1 cm to 5 cm. This layout design makes the concentration monitoring more accurate, and can timely reflect the changes in the air quality inside and around the air conditioner. It is suitable for places with high requirements for air quality, such as baby rooms and elderly rooms, to ensure the continuous high quality of indoor air. Specifically, in sensitive areas such as baby rooms and elderly rooms, the impact of air quality on the health of residents is particularly significant. The layout of multiple concentration monitoring probes can monitor air quality changes more comprehensively and accurately, ensure the purification effect of the air conditioning system, and provide a healthier and safer living environment for babies and the elderly.

[0042] Specifically, the multiple concentration monitoring probes 6 are divided into multiple rows, the air inlet grille 2 includes multiple air inlet plates 21 arranged in parallel, and the multiple rows of concentration monitoring probes 6 are arranged one-to-one with the multiple air inlet plates 21; wherein, the multiple concentration monitoring probes 6 in each row of concentration monitoring probes 6 are arranged along the extension direction of the corresponding air inlet plate 21; and / or, the number of concentration monitoring probes 6 is 40-80. Through multi-row and multi-point concentration monitoring, the air conditioner can fully grasp the indoor air quality, which is suitable for large conference rooms, classrooms and other places that require comprehensive purification, ensuring the uniformity and comprehensiveness of the purification effect. Specifically, in large conference rooms and classrooms and other places, the uniformity of air circulation and purification is crucial. Multi-row and multi-point concentration monitoring probes can ensure that the purification effect of the air conditioning system in these areas is evenly distributed, avoiding local air pollution, and providing users with a more comfortable and healthy working and learning environment.

[0043] Specifically, an air conditioner includes an indoor unit, and the indoor unit is the indoor unit of any of the air conditioners described above. This air conditioner not only has the temperature adjustment function of a traditional air conditioner, but also can continuously purify the indoor air when it is stopped. It is suitable for environments such as homes and public places that require air purification, and improves the versatility and practicality of air conditioners. Specifically, this multifunctional air conditioner can effectively improve the indoor air quality in practical applications, especially in homes and public places, such as shopping malls and cinemas. It can not only adjust the temperature, but also continuously purify the air when it is stopped, reduce bacteria, viruses and odors in the air, and provide users with a healthier and more comfortable living and entertainment environment.

[0044] Specifically, an air conditioner deodorization control method is applicable to the above air conditioner, and the air conditioner deodorization control method includes: judging whether the air conditioner is in a shutdown state where the air conditioner is shut down when the temperature point set by the user is reached; when the air conditioner is in the shutdown state, closing the air guide plate 1 and the air inlet grille 2 of the indoor unit of the air conditioner, starting the sterilization and deodorization module of the air conditioner, and making the air conditioner enter the sterilization and deodorization mode; after the air conditioner runs in the sterilization and deodorization mode for the first predetermined time period ΔT1, closing the sterilization and deodorization module, and starting the negative ion generator 5 of the air conditioner, so that the air conditioner enters the deozonation mode. This method can continuously purify the air after the air conditioner is shut down, and is particularly suitable for resting at night, which not only ensures the freshness of the indoor air, but also avoids the noise of the air conditioner operation, and improves the sleep quality. Specifically, when resting at night, people prefer a quiet environment. This control method not only purifies the air, but also keeps the environment quiet by starting the deodorization mode when the air conditioner is shut down, and avoids the influence of the air conditioner operation noise on sleep, especially in places such as bedrooms where quiet rest is required. This design will significantly improve the user's sleep quality and quality of life.

[0045] Specifically, the air conditioner deodorization control method also includes: controlling the air conditioner to operate in the deozonation mode for a second predetermined time period ΔT2; wherein ΔT1+ΔT2 is less than or equal to the interval time period between the air conditioner entering the shutdown state and the next expected startup. This time control strategy ensures the full decomposition of ozone and avoids the potential harm of residual ozone to the human body. It is suitable for all environments where air conditioning is required, and enhances the user's sense of security and health protection. Specifically, through precise time control, the air conditioning system can switch to the deozonation mode in time after the sterilization and deodorization mode, ensuring the thorough decomposition of ozone and avoiding potential harm to the human body. This design is particularly suitable for places where air conditioning needs to be used for a long time, such as homes and offices in hot summer, and can continuously provide a healthy and safe indoor air environment.

[0046] Specifically, the air conditioner odor removal control method also includes: determining whether the indoor ambient temperature is outside the preset temperature range; when the indoor ambient temperature is outside the preset temperature range, opening the air guide plate 1 and the air inlet grille 2 to restart the air conditioner. This temperature control mechanism can automatically adjust the working state of the air conditioner according to the indoor temperature, and is suitable for environments with seasonal changes or large indoor temperature fluctuations, ensuring the comfort of the indoor temperature and the efficient operation of the air conditioner. Specifically, in the case of seasonal changes or large indoor temperature fluctuations, this design can automatically adjust the working state of the air conditioner. For example, in an environment with a large temperature difference in spring and autumn, the air conditioner will automatically start or stop according to the indoor temperature to ensure the comfort of the indoor temperature, while avoiding unnecessary energy waste and improving the energy efficiency of the air conditioning system and the comfort of the user.

[0047] Specifically, the odor concentration C in the indoor unit is detected. x ; Determine the odor concentration C x Is it greater than the critical concentration C 临界 When the odor concentration C x Greater than the critical concentration C 临界 When the odor concentration C x Less than the critical concentration C 临界 , the ozone opening valve of the ozone generator is controlled to open to the second initial opening, and the electric heater of the sterilization and deodorization module is turned on; wherein the first initial opening is greater than the second initial opening. By detecting the odor concentration C inside the indoor unit x , and according to whether it exceeds the critical concentration C 临界To adjust the initial opening of the ozone valve, the sterilization and deodorization mode is started intelligently. This strategy ensures that the amount of ozone produced matches the actual odor concentration, avoiding unnecessary waste of resources. The design of the first initial opening being larger than the second initial opening ensures that when the odor concentration is high, ozone can be distributed more quickly and fully inside the indoor unit to achieve a rapid purification effect. When the odor concentration is low, it is maintained at a lower ozone production level, which not only maintains the indoor air quality but also avoids over-purification.

[0048] Specifically, when the odor concentration C x Greater than the critical concentration C 临界 When the ozone generator is turned on, the real-time opening θ1 of the ozone opening valve is controlled to be proportional to the odor concentration C x The relationship between them is: θ1=C x / C0,; when the odor concentration C x Less than the critical concentration C 临界 When the ozone generator is turned on, the real-time opening θ2 of the ozone opening valve is controlled to be proportional to the odor concentration C x The relationship between is: θ2 = 20% × C x / C0; where C0 is the initial odor concentration detected when the sterilization and deodorization mode is turned on. Real-time opening θ 1、 θ2 and odor concentration C x The dynamic relationship control between the two makes the opening of the ozone valve respond to the change of indoor odor concentration in real time, realizing more accurate purification control. By dynamically adjusting the amount of ozone produced according to the odor concentration, it ensures that ozone will not be overproduced, thus avoiding the potential harm of ozone to the human body and providing a safer and healthier indoor air environment.

[0049] Specifically, the air conditioner deodorization control method further includes: when the odor concentration is less than or equal to the first acceptable concentration C 1可接受 , and when the running time of the air conditioner in the sterilization and deodorization mode is less than or equal to the first predetermined time period ΔT1, the sterilization and deodorization module is turned off; and / or the critical concentration C 临界 0.5 mg / m 3. This control strategy can shut down the ozone generator in time after the indoor odor is effectively purified, avoiding excessive purification and energy waste. It is suitable for all environments that require the use of air conditioning, improving energy efficiency and user experience. Specifically, this control strategy monitors the odor concentration and automatically shuts down the ozone generator when the indoor odor concentration drops to an acceptable range, avoiding energy waste caused by excessive purification. Especially in seasons with good air quality, such as autumn, when the indoor air is already relatively fresh, this design will significantly save energy and improve the energy efficiency of the air conditioning system. At the same time, for users, this intelligent control enables the air conditioner to adjust the purification mode according to actual needs, improving user experience and quality of life.

[0050] Specifically, after the air conditioner enters the deozonation mode, the air conditioner deodorization control method further includes: detecting the ozone concentration C in the indoor unit. y , according to the ozone concentration C y The size of the negative ion generator 5 controls the opening of the negative ion opening valve 51. This control based on ozone concentration can ensure the complete decomposition of ozone and avoid the potential harm of ozone residue to the human body. It is suitable for all environments where air conditioning is required, and improves the user's sense of security and health protection. Specifically, by detecting the ozone concentration and controlling the amount of negative ions generated, the air conditioning system can ensure that ozone is completely decomposed in the deozonation mode, avoiding potential harm to the human body, especially in environments where air conditioning needs to be used for a long time, such as offices or homes in summer. This design can provide users with a healthier and safer working and living environment, and improve the user's sense of security and health protection.

[0051] Specifically, after the air conditioner enters the deozonation mode, the air conditioner deodorization control method further includes: when the ozone concentration C y Less than or equal to the second acceptable concentration C 2可接受 , and when the running time of the air conditioner in the deozonation mode is less than or equal to the second predetermined time period ΔT2, the negative ion generator 5 is controlled to be turned off; wherein ΔT1+ΔT2 is less than or equal to the interval time period between the air conditioner entering the shutdown state and the next expected startup. This control strategy ensures the purification function of the air conditioner in the non-operating state, while avoiding excessive purification and energy waste. It is suitable for all environments where air conditioning is required, and improves energy utilization efficiency and user experience. Specifically, this control strategy can ensure that the indoor air is still purified when the air conditioner is not in operation. At the same time, by monitoring the ozone concentration and controlling the running time, excessive purification and energy waste are avoided, especially at night or in places with less human activities, such as hotel rooms. This design can continuously provide a fresh and healthy air environment, while saving energy, and improving the energy efficiency of the air conditioning system and the user experience.

[0052] Specifically, the opening degree α of the negative ion opening valve 51 of the negative ion generator 5 is related to the ozone concentration C in the indoor unit. y The relationship between is as follows: α = 99% × C y / C 00 +1%, 0≤α≤100%, C 00 It is the initial ozone concentration detected when the de-ozonation mode is turned on. This dynamic adjustment mechanism can adjust the amount of negative ions produced according to the actual indoor ozone concentration, ensuring the complete decomposition of ozone and avoiding the potential harm of ozone residue to the human body. It is suitable for all environments that require the use of air conditioning, and enhances the user's sense of security and health protection. Specifically, by dynamically adjusting the amount of negative ions produced, the air conditioning system can intelligently adjust the purification strategy according to the actual indoor ozone concentration. For example, in an environment with high ozone concentration, the air conditioner will automatically increase the amount of negative ions produced to accelerate the decomposition of ozone, and when the ozone concentration is low, the system will reduce the generation of negative ions to avoid energy waste. This design enables the air conditioner to purify indoor air more intelligently and efficiently, and is suitable for various indoor environments, such as gyms, swimming pools, etc., ensuring the health and safety of users in various environments.

[0053] After the indoor room air conditioner is turned on, when the air conditioner reaches the temperature point and stops, the indoor and outdoor fans stop working, the air conditioning system immediately closes the indoor unit air guide plate and air inlet grille, starts the ozone generator to work, and turns on the electric heater at the same time to enter the sterilization and deodorization mode. After entering this mode, first detect the concentration of odor inside the indoor unit C x Is it greater than the critical concentration C 临界 , preferably, C 临界 =0.5mg / m 3 If it is greater than, the valve connected to the ozone generator will be intelligently opened wider, and the electric heater will be turned on at the same time to sterilize and remove odor; if it is less than, the electric heater will be used mainly for sterilization and odor removal, and the valve connected to the ozone generator will be intelligently opened smaller as an auxiliary.

[0054] The ozone generator is located inside the air inlet of the indoor unit. The working temperature of the electric heater is 70-90°C (ozone will decompose into oxygen at high temperatures. Specifically, when the temperature reaches above 100°C, ozone begins to gradually decompose, so there is no need to worry about the electric heater reacting with ozone).

[0055] Specifically, the concentration of odor inside the indoor unit is C x The value is obtained by arranging concentration monitoring points in the indoor unit. These monitoring points are located inside the indoor unit, specifically 1-5 cm away from the air inlet grille and the air outlet. Figure 4 and Figure 5 As an example, a total of 48 concentration monitoring points were set up, C xThe value is the average value of the 48 concentration monitoring points. The specific concentration monitoring points can be set according to the specifications and internal structure of the indoor unit, generally 40-80. (These concentration monitoring points can also monitor the ozone concentration C y , which will not be repeated below)

[0056] After entering the sterilization and deodorization mode

[0057] 1. Two situations

[0058] (1) If the concentration of odor inside the indoor unit is detected first, C x (At this time τ=0, C x =C0) is greater than the critical concentration C 临界 , the valve connected to the ozone generator is automatically opened to the maximum, that is, 100% opening, and the electric heater is turned on at this time to sterilize and remove odors. As the sterilization and odor removal proceeds, the concentration of odor inside the indoor unit gradually decreases, and the valve connected to the ozone generator is gradually closed. Specifically, the opening θ of the valve connected to the ozone generator is related to the concentration C of odor inside the indoor unit. x In direct proportion, θ=C x / C0, 0≤θ≤100%, C0 is the initial concentration value (τ=0) of the odor detected when the sterilization and deodorization mode is turned on.

[0059] (2) If the concentration of odor inside the indoor unit is detected first (at time τ = 0, C x =C0) is less than the critical concentration C 临界 , the electric heater is mainly used for sterilization and deodorization, and the valve connected to the ozone generator is intelligently opened as an auxiliary. Preferably, at this time, θ=20%×C x / C0, 0≤θ≤20%, C0 is the initial odor concentration value (τ=0) detected when the sterilization and deodorization mode is turned on.

[0060] 2. As the sterilization and odor removal process proceeds, detect the concentration of odor inside the indoor unit C x ≤C 1可接受 , and the running time is C x ≤C 1可接受 , turn off the ozone generator and electric heater, the sterilization and deodorization mode ends, and the deozonation mode begins. 1可接受 The value is determined according to the indoor air quality standard. The preferred value is C 1可接受 =0.10mg / m 3 , ΔT1 is determined according to the time from the last shutdown to the next startup.

[0061] After entering the deozonation mode, the negative ion generator is used for deozonation (ozone is harmful to the human body). The negative ion generator is located inside the air inlet of the indoor unit. The negative ion generator generates negative ions and reacts chemically with ozone molecules to decompose ozone into oxygen, thereby effectively removing ozone from the air. And negative ions are generally harmless to the human body, and in many cases are even considered to be beneficial to health.

[0062] 1. First, detect the ozone concentration C inside the indoor unit y (At this time τ=0, C y =C 00 ), start the negative ion generator to work, according to the concentration of ozone C y (to intelligently control the valve connected to the negative ion generator. As the deozonation proceeds, the concentration of ozone inside the indoor unit gradually decreases, and the valve connected to the negative ion generator is gradually closed. Specifically, the opening α of the valve connected to the negative ion generator is proportional to the concentration C of the odor inside the indoor unit. y Linear relationship, α = 99% × C y / C 00 +1%, 0≤α≤100%, C 00 The initial ozone concentration (τ=0) is detected when the deozone mode is turned on.

[0063] 2. Then detect the ozone concentration C of the indoor unit at this time y ≤C 2可接受 (Best, C y =0), and the running time Ty≤ΔT2, so that the time ΔT1+ΔT2 is less than or equal to the time from the last shutdown to the next startup of the air conditioner. When these two conditions are met, the deozonization mode ends, and the air conditioner can be started next time, and the indoor unit air guide plate and air inlet grille are opened after startup.

[0064] Preferably, C 2可接受 =0.001mg / m 3 (Best, C y =0), ΔT1+ΔT2 time ≤ 2min.

[0065] The present application scheme uses ozone to sterilize and remove odors when the air conditioner is stopped, and then decomposes the residual ozone into oxygen through a negative ion generator, thereby effectively improving the indoor air quality, avoiding the potential harm of ozone to the human body, and realizing the continuous purification function of the air conditioner in a non-operating state, thereby improving the user's quality of life and health protection. In addition, through intelligent control and dynamic adjustment, the present scheme can also intelligently adjust the purification mode according to the actual odor and ozone concentration in the room, and is suitable for various indoor environments, improving the purification efficiency and safety, and having significant application benefits and market prospects. Specifically, the practical application effect of the present application scheme is significant, especially in the context of frequent global public health events, through the intelligent control of ozone and negative ions, it can effectively remove viruses and bacteria in the indoor air, providing users with a healthier and safer living environment. At the same time, this design is also suitable for various commercial places, such as hotels, restaurants, shopping malls, etc., which can significantly improve the air quality and user experience of the place, and has broad market prospects and application value.

[0066] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0067] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0068] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An indoor unit of an air conditioner, comprising an air guide plate (1) and an air inlet grille (2), characterized in that: The indoor unit further comprises: A sterilization and deodorization module, comprising an ozone generator (3), wherein the ozone generator (3) is arranged inside the air inlet (4) of the indoor unit to generate ozone for sterilization and deodorization; A negative ion generator (5), the negative ion generator (5) being arranged on the inner side of the air inlet (4) of the indoor unit and being used for decomposing ozone into oxygen in a deozonation mode; A control module is used to determine whether the air conditioner is in a shutdown state in which the air conditioner stops when a temperature set by a user is reached; the control module is connected to the sterilization and deodorization module and the negative ion generator (5) respectively, so that when the air conditioner is in the shutdown state, the sterilization and deodorization module and the negative ion generator are controlled to be turned on and off in turn, so that the air conditioner enters a sterilization and deodorization mode and a deozonation mode in turn.

2. The indoor unit of the air conditioner according to claim 1, characterized in that: The sterilization and deodorization module also includes: An electric heater is disposed in a housing of the indoor unit to remove moisture and odor inside the indoor unit in the sterilization and deodorization mode.

3. The indoor unit of the air conditioner according to claim 1, characterized in that: A concentration monitoring device is arranged in the housing of the indoor unit to monitor the odor concentration C inside the indoor unit. x and ozone concentration C y ; The control module is connected to the concentration monitoring device to obtain the odor concentration C monitored by the concentration monitoring device. x and ozone concentration C y , according to the odor concentration C x The size of the ozone generator (3) controls the opening of the ozone opening valve (31), and according to the ozone concentration C y The size of controls the opening degree of the negative ion opening valve (51) of the negative ion generator (5).

4. The indoor unit of the air conditioner according to claim 3, characterized in that: The concentration monitoring device comprises a plurality of concentration monitoring probes (6), and the distance between the detection surface of the concentration monitoring probe (6) and the air inlet grille (2) and / or the air outlet (7) of the air conditioner is 1 cm to 5 cm.

5. The indoor unit of the air conditioner according to claim 4, characterized in that: The plurality of concentration monitoring probes (6) are divided into a plurality of rows, the air inlet grille (2) comprises a plurality of air inlet plates (21) arranged in parallel, and the plurality of rows of concentration monitoring probes (6) are arranged in one-to-one correspondence with the plurality of air inlet plates (21); wherein the plurality of concentration monitoring probes (6) in each row of the concentration monitoring probes (6) are arranged along the extension direction of the corresponding air inlet plate (21); and / or the number of the concentration monitoring probes (6) is 40-80.

6. An air conditioner, comprising an indoor unit, characterized in that: The indoor unit is the indoor unit of the air conditioner according to any one of claims 1 to 5.

7. A method for controlling odor removal in an air conditioner, characterized in that: Applicable to the air conditioner according to claim 6, the air conditioner deodorization control method comprises: Determining whether the air conditioner is in a shutdown state where the air conditioner stops when reaching a temperature point set by a user; When the air conditioner is in the shutdown state, the air guide plate (1) and the air inlet grille (2) of the indoor unit of the air conditioner are closed, and the sterilization and deodorization module of the air conditioner is started, so that the air conditioner enters a sterilization and deodorization mode; After the air conditioner operates in the sterilization and deodorization mode for a first predetermined period of time ΔT1, the sterilization and deodorization module is turned off, and the negative ion generator (5) of the air conditioner is started, so that the air conditioner enters the deozonation mode.

8. The air conditioner deodorization control method according to claim 1, characterized in that: The air conditioner deodorization control method also includes: Controlling the air conditioner to operate in the deozonation mode for a second predetermined period of time ΔT2; Wherein, ΔT1+ΔT2 is less than or equal to the interval time period between the air conditioner entering the shutdown state and the next expected startup state.

9. The air conditioner deodorization control method according to claim 8, characterized in that: The air conditioner deodorization control method also includes: Determine whether the indoor ambient temperature is outside the preset temperature range; When the indoor ambient temperature is outside the preset temperature range, the air guide plate (1) and the air inlet grille (2) are opened to enable the air conditioner to start operating again.

10. The air conditioner deodorization control method according to claim 7, characterized in that: After the air conditioner enters the sterilization and deodorization mode, the air conditioner deodorization control method further includes: Detect the odor concentration C in the indoor unit x ; Determine the odor concentration C x Is it greater than the critical concentration C 临界 ; When the odor concentration C x Greater than the critical concentration C 临界 When the ozone opening valve (31) of the ozone generator (3) is controlled to open to a first initial opening, the electric heater of the sterilization and deodorization module is turned on; When the odor concentration C x Less than the critical concentration C 临界 When the ozone opening valve (31) of the ozone generator (3) is controlled to open to a second initial opening, the electric heater of the sterilization and deodorization module is turned on; Wherein, the first initial opening is greater than the second initial opening.

11. The air conditioner deodorization control method according to claim 10, characterized in that: When the odor concentration C x Greater than the critical concentration C 临界 When the ozone opening valve (31) of the ozone generator (3) is controlled, the real-time opening θ1 and the odor concentration C x The relationship between them is: θ1=C x / C0,; and / or, When the odor concentration C x Less than the critical concentration C 临界 When the ozone opening valve (31) of the ozone generator (3) is controlled, the real-time opening θ2 and the odor concentration C x The relationship between is: θ2 = 20% × C x / C0; Among them, C0 is the initial odor concentration detected when the sterilization and odor removal mode is turned on.

12. The air conditioner deodorization control method according to claim 10, characterized in that: The air conditioner deodorization control method further comprises: when the odor concentration is less than or equal to a first acceptable concentration C 1可接受 , and when the running time of the sterilization and deodorization mode is less than or equal to the first predetermined time period ΔT1, the air conditioner turns off the sterilization and deodorization module; and / or The critical concentration C 临界 0.5 mg / m 3 .

13. The air conditioner deodorization control method according to claim 7, characterized in that: After the air conditioner enters the deozonation mode, the air conditioner deodorization control method further includes: Detect the ozone concentration C in the indoor unit y , according to the ozone concentration C y The size of the negative ion generator (5) controls the opening of the negative ion opening valve (51) of the negative ion generator (5).

14. The air conditioner deodorization control method according to claim 13, characterized in that: After the air conditioner enters the deozonation mode, the air conditioner deodorization control method further includes: When the ozone concentration C y Less than or equal to the second acceptable concentration C 2可接受 , and when the operation time of the air conditioner in the deozonation mode is less than or equal to the second predetermined time period ΔT2, the negative ion generator (5) is controlled to be turned off; Wherein, ΔT1+ΔT2 is less than or equal to the interval time period between the air conditioner entering the shutdown state and the next expected startup state.

15. The air conditioner deodorization control method according to claim 13, characterized in that: The opening degree α of the negative ion opening valve (51) of the negative ion generator (5) and the ozone concentration C in the indoor unit y The relationship between them is as follows: α=99%×Cy / C 00 +1%, C 00 It is the initial ozone concentration detected when the deozone mode is turned on.

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