Method for hygienic detection of ducted air conditioner and ducted air conditioner

Abstract

The application provides a kind of ducted air conditioner and the health detection method of ducted air conditioner, air detection device is arranged in ducted air conditioner, air detection device is arranged in the air duct of ducted air conditioner, for detecting oxygen concentration in air;Method includes: in standby state of ducted air conditioner, air detection device detects the first oxygen concentration value in the air duct of ducted air conditioner;Start ducted air conditioner;In the running state of ducted air conditioner, air detection device detects the second oxygen concentration value in the air duct of ducted air conditioner;By comparing the first oxygen concentration value and the second oxygen concentration value, to judge whether ducted air conditioner has cleaning needs;The first oxygen concentration value is lower than the second oxygen concentration value, and the difference between the first oxygen concentration value and the second oxygen concentration value exceeds the first preset difference, then judge ducted air conditioner has cleaning needs.The technical scheme of the application can assist the user to accurately control the cleaning time of ducted air conditioner, improve the use experience of ducted air conditioner.

Description

Technical Field

[0001] This invention relates to the field of duct air conditioning technology, and more particularly to a hygienic testing method for duct air conditioning and a duct air conditioning machine. Background Technology

[0002] As living standards improve, people have increasingly stringent requirements for air conditioning. Traditional floor-standing and wall-mounted air conditioners occupy indoor space and affect the aesthetics of the room. Therefore, concealed air conditioners are gaining more application in production and daily life. Compared to the high cost and strict installation requirements of central air conditioning, ducted air conditioners are cheaper and produce the same effect as central air conditioning in terms of interior decoration, with minimal impact on indoor space, thus gaining increasing popularity among users.

[0003] However, because ducted air conditioning units are installed in the ceiling, users easily overlook cleaning them, or the difficulty in observing them makes it impossible to accurately determine when to clean them. This results in the ducted air conditioning unit not being cleaned in a timely manner, leading to the accumulation of dirt that is harmful to indoor air. On the other hand, cleaning the ducted air conditioning unit too frequently will waste maintenance costs. Summary of the Invention

[0004] This invention provides a hygiene testing method for ducted air conditioners and a ducted air conditioner, which solves the problem that users have difficulty accurately controlling the cleaning time of ducted air conditioners in the prior art, and enables users to accurately control the cleaning time of ducted air conditioners, thereby improving the user experience of ducted air conditioners.

[0005] This invention provides a hygiene testing method for a ducted air conditioner. The ducted air conditioner is equipped with an air detection device located inside its ductwork for detecting the oxygen concentration in the air. The method includes: in the standby state of the ducted air conditioner, the air detection device detects a first oxygen concentration value within the ductwork of the ductwork; starting the ductwork; in the operating state of the ductwork, the air detection device detects a second oxygen concentration value within the ductwork; by comparing the first oxygen concentration value and the second oxygen concentration value, it is determined whether the ductwork requires cleaning; if the first oxygen concentration value is lower than the second oxygen concentration value, and the difference between the first and second oxygen concentration values ​​exceeds a first preset difference, then it is determined that the ductwork requires cleaning.

[0006] According to a hygienic inspection method for a ducted air conditioner provided by the present invention, after the ducted air conditioner switches from the running state to the standby state, the air detection device waits for a first preset time before starting and continues to detect for a second preset time.

[0007] According to a hygienic testing method for a ducted air conditioner provided by the present invention, the first oxygen concentration value is the average value among the detection values ​​of the air detection device within a second preset time period; or, the first oxygen concentration value is the maximum value among the detection values ​​of the air detection device within the second preset time period.

[0008] According to a hygiene inspection method for a ducted air conditioner provided by the present invention, the ducted air conditioner is provided with a pressure detection device, which is disposed on the evaporator of the ducted air conditioner or at the connection position of the evaporator; the method includes: in the operating state of the ducted air conditioner, the pressure detection device acquires a pressure detection value; by comparing the pressure detection value with a preset pressure range, it is determined whether the ducted air conditioner has a cleaning requirement.

[0009] According to the present invention, a hygienic testing method for a ducted air conditioner is provided, wherein the preset pressure range is the pressure range set at the factory of the ducted air conditioner; or, the preset pressure range is the initial pressure range defined by the maximum and minimum values ​​of the pressure detection values ​​obtained by the pressure detection device during the first operation of the ducted air conditioner after installation.

[0010] According to a hygiene testing method for a ducted air conditioner provided by the present invention, the pressure detection device continuously detects the ducted air conditioner for a third preset duration while it is in operation; the pressure detection value is the minimum value obtained by the pressure detection device within the third preset duration; if the pressure detection value is higher than the preset pressure range, and the difference between the pressure detection value and the maximum value of the preset pressure range exceeds a second preset difference, then it is determined that the ducted air conditioner has a cleaning requirement.

[0011] According to a hygiene inspection method for a ducted air conditioner provided by the present invention, the ducted air conditioner is provided with an infrared detection device, the infrared detection device includes an infrared emitting source disposed at the edge of the chassis inside the ducted air conditioner and an infrared receiver disposed on the opposite side of the infrared emitting source; the method includes: in the standby state of the ducted air conditioner, determining whether the ducted air conditioner needs cleaning based on the proportion of infrared light received by the infrared receiver.

[0012] A hygiene testing method for a ducted air conditioner according to the present invention includes: comprehensively judging the cleaning needs of the ducted air conditioner based on the detection results of the air detection device, the pressure detection device, and the infrared detection device, and issuing graded reminders to the user; wherein, if the detection result of the air detection device or the pressure detection device exceeds the standard, but the detection result of the infrared detection device does not exceed the standard, a level one cleaning reminder is generated; if the detection results of both the air detection device and the pressure detection device exceed the standard, but the detection result of the infrared detection device does not exceed the standard, a level two cleaning reminder is generated; if the detection result of the infrared detection device exceeds the standard, a level three cleaning reminder is generated.

[0013] The present invention also provides a duct air conditioner that is capable of performing any of the above-described duct air conditioner hygiene testing methods.

[0014] According to the present invention, a duct air conditioner is provided inside the duct air conditioner, the pre-treatment device being able to automatically clean the dirt inside the duct air conditioner in its self-cleaning mode; the duct air conditioner is able to automatically activate the self-cleaning mode based on the cleaning requirements generated by the duct air conditioner's hygiene detection method.

[0015] After prolonged use, ducted air conditioners can accumulate dirt and grime inside, leading to hygiene issues with the airflow and affecting the health of residents. When dust and grease accumulate inside the ducted air conditioner, mold, bacteria, or other microorganisms can easily grow in humid environments. These byproducts produce gases such as carbon dioxide, carbon monoxide, and ammonia, consuming oxygen. Therefore, when the ducted air conditioner is not connected to the outside air, the oxygen concentration inside will decrease.

[0016] The present invention provides a hygienic inspection method and ducted air conditioner, which, by incorporating an air detection device inside the machine, can detect the difference between the oxygen concentration inside the machine and the indoor oxygen concentration. Specifically, in the standby state of the ducted air conditioner, the air detection device detects a first oxygen concentration value within the air duct, reflecting the oxygen concentration inside the duct when it is not connected to outside air. In the operating state of the ducted air conditioner, the air detection device detects a second oxygen concentration value within the air duct, reflecting the oxygen concentration in the indoor air. By comparing the first and second oxygen concentration values, the difference between the oxygen concentration inside the machine and the indoor oxygen concentration can be determined. This addresses the deficiency in existing technologies where users find it difficult to accurately control the cleaning timing of ducted air conditioners, thus assisting users in accurately controlling the cleaning time and improving the user experience. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a structural schematic diagram of the self-cleaning system for the duct air conditioner provided by the present invention;

[0019] Figure 2 This is a flowchart illustrating the self-cleaning method for the duct air conditioner provided by the present invention;

[0020] Figure 3This is a flowchart illustrating the hygiene testing method for ducted air conditioners provided by the present invention.

[0021] Figure label:

[0022] Liquid storage container 10; liquid storage chamber 11; liquid inlet 12; liquid level sensor 13; sprayer 21; first mixing chamber 22; nozzle 23; atomizer 24; second mixing chamber 25; atomizing tank 26; controller 30; evaporator 41; inspection cover 42. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0024] Because residential ducted air conditioning units are installed inside the ceiling, especially kitchen air conditioners which tend to accumulate a lot of grease, it is difficult for residents to clean and maintain them themselves. They usually need to spend a lot of money to hire professionals to come to their homes.

[0025] In view of this, the present invention provides a self-cleaning system for duct air conditioners. This system can intelligently control the cleaning of various parts of the duct air conditioner based on the self-inspection of its own hygiene status. Users only need to add consumables (cleaning water, disinfectant, cleaning agent, etc.) periodically. The wastewater after cleaning is discharged through the condensate drain pipe, which can reduce the need for professional on-site work and reduce the cleaning and maintenance costs of the duct air conditioner.

[0026] To better understand the technical solution of the present invention, the following is in conjunction with... Figure 1 This invention describes a specific embodiment of the self-cleaning system for ductwork machines.

[0027] According to the present invention, a self-cleaning system for a ducted air conditioner is provided, such as... Figure 1 As shown, it includes: a liquid storage container 10 for storing cleaning liquid; a spraying device installed inside the duct air conditioner and connected to the liquid storage container 10; a controller 30 for controlling the spraying device to obtain cleaning liquid from the liquid storage container 10 and spray it inside the duct air conditioner; during operation, at least a portion of the cleaning liquid is sprayed onto the evaporator 41 of the duct air conditioner.

[0028] The controller 30 controls the spraying device to obtain cleaning liquid from the storage container 10 and spray it onto the interior of the duct air conditioner, especially rinsing the evaporator 41, thereby achieving self-cleaning of the duct air conditioner. The sprayed cleaning liquid can be collected in the condensate collection tank of the duct air conditioner and discharged to the outside through the condensate drain pipe. According to this solution, users only need to add cleaning liquid to achieve self-cleaning of the duct air conditioner, thereby solving the problem of high cleaning and maintenance costs of duct air conditioners in the prior art, reducing the need for professional on-site work, and lowering the cleaning and maintenance costs of duct air conditioners.

[0029] The spraying device directs at least part of its spray direction towards the evaporator 41. This directly washes away stubborn grease on the evaporator 41, and the sprayed cleaning liquid splashes everywhere upon contact with the evaporator 41, ensuring the cleaning liquid reaches the entire interior of the duct unit and increasing the cleaning range. The self-cleaning system's liquid storage container 10 can be located on the outside of the duct unit for easy addition of cleaning liquid by the user; alternatively, the liquid storage container 10 can be located inside the duct unit to reduce space occupation on the outside. The cleaning liquid in the liquid storage container 10 can be pre-mixed and ready for direct use; alternatively, different types of cleaning liquids can be stored separately in the liquid storage container 10 and mixed only during use to extend the shelf life of the cleaning liquid.

[0030] According to the present invention, a self-cleaning system for a ducted air conditioner is provided, such as... Figure 1 As shown, the liquid storage container 10 preferably includes a plurality of mutually isolated liquid storage chambers 11, and the cleaning liquid includes at least cleaning water and cleaning agent. At least one of the plurality of liquid storage chambers 11 is used to store cleaning water, and at least one of the remaining liquid storage chambers 11 is used to store cleaning agent. During operation, the spraying device mixes the cleaning water and cleaning agent and sprays them into the interior of the duct air conditioner.

[0031] When the spraying device is not in operation, the cleaning water and detergent are stored separately, allowing for longer storage time. Users can add a larger amount of cleaning liquid to the storage container 10 at once for later use, eliminating the need for manual replenishment each time, thus further reducing maintenance workload. When the spraying device is in operation, the cleaning water and detergent mix to form a diluted cleaning solution, which can be directly used for the self-cleaning of the duct unit.

[0032] According to the self-cleaning system for a duct air conditioner provided by the present invention, the cleaning liquid may further include a disinfectant for sterilization and disinfection inside the duct air conditioner, reducing bacterial growth. Specifically, at least one of the plurality of liquid storage tanks 11 is used to store the disinfectant, and during operation of the spraying device, the cleaning water and disinfectant are mixed and sprayed into the interior of the duct air conditioner.

[0033] Similar to the use of cleaning agents, when the spraying device is not in operation, the cleaning water and disinfectant are stored separately, allowing for longer preservation. Users can add a larger amount of cleaning liquid to the storage container 10 at once for later use, eliminating the need for manual replenishment each time, thus further reducing maintenance workload. When the spraying device is in operation, the cleaning water and disinfectant mix to form a diluted disinfectant solution, which can be directly used to sterilize and disinfect the inside of the air duct unit.

[0034] According to the self-cleaning system for a ducted air conditioner provided by the present invention, the spraying device can be of different types, such as jet type, atomizing type, etc. Figure 1 As shown, the spraying device preferably includes a sprayer 21, which has a first mixing chamber 22 and a nozzle 23 communicating with the first mixing chamber 22; the first mixing chamber 22 is connected to a storage tank 11 for storing cleaning water and at least one storage tank 11 for storing other cleaning liquids, and the nozzle 23 is directed toward the evaporator 41 of the duct machine.

[0035] Taking the self-cleaning of a duct air conditioner using a cleaning solution as an example, during the self-cleaning process, the first mixing chamber 22 first obtains cleaning water and cleaning agent from the liquid storage container 10 respectively. Within the first mixing chamber 22, the cleaning water and cleaning agent mix to form a cleaning solution, which is then sprayed into the duct air conditioner from the nozzle 23. The spraying device can be operated by a liquid pump providing the driving force for the cleaning liquid, or preferably, the first mixing chamber 22 is equipped with a pressure regulating device such as a piston mechanism. The piston mechanism expands the volume of the first mixing chamber 22 to create a negative pressure within it, simultaneously drawing cleaning water and cleaning agent from multiple liquid storage chambers 11 and forming a cleaning solution in the first mixing chamber 22. During spraying, the piston mechanism reduces the volume of the first mixing chamber 22, causing the cleaning solution to be sprayed out along the nozzle 23 under positive pressure. The opening and closing of the first mixing chamber 22, the liquid storage container 10, and the nozzle 23 can be controlled by a solenoid valve; alternatively, one-way valves are preferably provided between the first mixing chamber 22, the liquid storage container 10, and the nozzle 23, respectively, so that cleaning liquid is drawn from the liquid storage container 10 when the first mixing chamber 22 is under negative pressure, and the cleaning solution is forced towards the nozzle 23 when it is under positive pressure. It is understood that other solutions, such as disinfectant solutions, can also be sprayed in the above manner.

[0036] According to the self-cleaning system for a duct air conditioner provided by the present invention, the spraying device may also include an atomizer 24. For example... Figure 1 As shown, the atomizer 24 has a second mixing chamber 25 and an atomizing tank 26 communicating with the second mixing chamber 25. The second mixing chamber 25 is connected to a liquid storage tank 11 for storing cleaning water and at least one liquid storage tank 11 for storing other cleaning liquids. The atomizing tank 26 is used to atomize the cleaning liquid entering the atomizing tank 26.

[0037] Taking the sterilization of a duct air conditioner using a disinfectant solution as an example, during the sterilization process, the second mixing chamber 25 first obtains cleaning water and disinfectant from the storage container 10. Within the second mixing chamber 25, the cleaning water and disinfectant mix to form a disinfectant solution, which is then atomized and diffused into the duct air conditioner in the atomizing tank 26. The spraying device can be operated by a liquid pump providing the driving force for the cleaning liquid, or preferably, the second mixing chamber 25 is equipped with a pressure regulating device such as a piston mechanism. The piston mechanism expands the volume of the second mixing chamber 25 to create a negative pressure within it, simultaneously drawing cleaning water and disinfectant from multiple storage chambers 11 and forming a disinfectant solution within the second mixing chamber 25. During atomization, the piston mechanism reduces the volume of the second mixing chamber 25, allowing the disinfectant solution to enter the atomizing tank 26 under positive pressure. The second mixing chamber 25 can be opened and closed via a solenoid valve between the liquid storage container 10 and the atomizing tank 26; alternatively, one-way valves are preferably provided between the second mixing chamber 25 and each of the liquid storage container 10 and the atomizing tank 26, so that cleaning liquid is drawn from the liquid storage container 10 when the second mixing chamber 25 is under negative pressure, and disinfectant solution is forced towards the nozzle 23 when it is under positive pressure. It is understood that other solutions, such as cleaning solutions, can also be atomized and used in the above manner.

[0038] According to the present invention, a self-cleaning system for a ducted air conditioner is provided, such as... Figure 1 As shown, the liquid storage container 10 can be detachable, allowing it to be removed for operation when adding cleaning liquid. Alternatively, the liquid storage container 10 preferably includes an inlet 12, which is located inside the access cover 42 of the duct unit. When adding cleaning liquid, the user can directly add cleaning water, cleaning agents, and disinfectants to the liquid storage container 10 after opening the access cover 42 of the ceiling.

[0039] According to the self-cleaning system for a duct air conditioner provided by the present invention, the liquid storage container 10 preferably further includes a liquid level sensor 13. The liquid level sensor 13 is communicatively connected to the controller 30 so that when the storage of cleaning liquid is insufficient, the controller 30 sends a prompt message to the user to add cleaning liquid. The user can add cleaning liquid in a timely manner according to the prompt message to ensure that the self-cleaning system can operate normally and avoid unsatisfactory cleaning effect due to insufficient cleaning liquid capacity. The liquid level sensor 13 is preferably a float sensor, which senses the liquid level by buoyancy and has a more reliable detection effect.

[0040] Based on the self-cleaning system of the ducted air conditioner described above, the present invention also provides a self-cleaning method for the ducted air conditioner. This self-cleaning method is applicable to ducted air conditioners equipped with any of the above-described self-cleaning systems.

[0041] like Figure 2As shown, a self-cleaning method for a ducted air conditioner according to the present invention includes: activating the self-cleaning mode of the ducted air conditioner; turning off the compressor and indoor air outlet, and starting the fan and spraying device; and exiting the self-cleaning mode after cleaning is completed.

[0042] During the self-cleaning mode, the compressor is turned off to save energy; the indoor air outlet of the duct unit is closed to prevent the sprayed cleaning or disinfecting solution from entering the room; when the fan and spraying device are turned on at the same time, the sprayed cleaning or disinfecting solution can be diffused to every corner of the duct unit by the airflow inside the duct unit under the action of the fan, improving the cleaning and disinfection effect.

[0043] According to the self-cleaning method of a duct air conditioner provided by the present invention, the volume of cleaning liquid is detected simultaneously with the activation of the self-cleaning mode to prevent the self-cleaning mode from being activated when the volume of cleaning liquid is insufficient, which would lead to unsatisfactory cleaning results. Preferably, when the volume of cleaning liquid is less than the required cleaning amount, the self-cleaning mode is paused, and the user is prompted to add cleaning liquid. The user can add cleaning liquid in a timely manner according to the prompt information to ensure the normal operation of the self-cleaning system and avoid unsatisfactory cleaning results due to insufficient cleaning liquid volume.

[0044] According to the self-cleaning method of the duct air conditioner provided by the present invention, the self-cleaning mode of the duct air conditioner can be automatically activated at fixed intervals. This fixed interval can be a factory-set time length that is more suitable for the equipment's condition, or preferably, the fixed interval can be set by the customer.

[0045] On the other hand, when ducted air conditioners are left idle or turned off for extended periods, dirt and bacteria are more likely to accumulate inside. Therefore, ideally, the aforementioned fixed duration should be the duration during which the ducted air conditioner is not in operation. For example, it can be set to automatically prompt the user to clean the unit when it is turned on for the first time after the air conditioner has not been used for more than 3 months, or to automatically activate the self-cleaning mode.

[0046] In addition, a hygiene monitoring device can be installed inside the duct unit to detect the cleanliness of the interior. When the duct unit is started, the controller 30 can select to operate the duct unit normally or activate the self-cleaning mode based on the detection results of the hygiene monitoring device.

[0047] After prolonged use, ducted air conditioning units can accumulate dirt and grime inside, leading to hygiene problems in the airflow and affecting the health of residents. Manually determining when to clean or using timed reminders may not be sufficient to ensure timely cleaning. Figure 3As shown, this invention also provides a hygiene inspection method capable of monitoring the hygienic condition of various structural components within a ducted air conditioner. Specifically, this may include analysis of gas composition, detection of dust collection, and inspection of the heat exchanger surface. Based on the comprehensive inspection results, a maintenance strategy is automatically generated for user reference, improving the accuracy of determining when to clean the ducted air conditioner and further protecting user health.

[0048] According to a hygiene inspection method for a ducted air conditioner provided by the present invention, an air detection device is installed inside the duct of the ducted air conditioner to detect the oxygen concentration in the air. The hygiene inspection method for the ducted air conditioner includes: in the standby state of the ducted air conditioner, the air detection device detects a first oxygen concentration value in the duct of the ducted air conditioner; starting the ducted air conditioner; in the running state of the ducted air conditioner, the air detection device detects a second oxygen concentration value in the duct of the duct of the ducted air conditioner; by comparing the first oxygen concentration value and the second oxygen concentration value, it is determined whether the ducted air conditioner needs cleaning; if the first oxygen concentration value is lower than the second oxygen concentration value, and the difference between the first oxygen concentration value and the second oxygen concentration value exceeds a first preset difference, it is determined that the ducted air conditioner needs cleaning.

[0049] When dust and grease accumulate inside a ducted air conditioner, it can easily lead to mold, bacteria, or other microorganisms in a humid environment. These byproducts produce gases such as carbon dioxide, carbon monoxide, and ammonia, consuming oxygen. Therefore, when the ducted air conditioner is not connected to the outside air, the oxygen concentration inside will decrease. An air detection device is installed inside the machine to detect the difference between the oxygen concentration inside the machine and the indoor oxygen concentration. Specifically, in the standby state of the ducted air conditioner, the air detection device measures the first oxygen concentration value in the air duct, reflecting the oxygen concentration inside the duct when it is not connected to the outside air. In the running state of the ducted air conditioner, the air detection device measures the second oxygen concentration value in the air duct, reflecting the oxygen concentration in the indoor air. By comparing the first and second oxygen concentration values, the difference between the oxygen concentration inside the machine and the indoor oxygen concentration can be determined.

[0050] To prevent misjudgment, a first preset difference value can be set in advance. When the first oxygen concentration value is lower than the second oxygen concentration value, and the difference between the first and second oxygen concentration values ​​exceeds the first preset difference value, it is determined that the duct air conditioner needs cleaning. The first preset difference value can be set manually by the user.

[0051] According to the hygiene testing method for a ducted air conditioner provided by the present invention, after the ducted air conditioner switches from the running state to the standby state, the air detection device starts after waiting for a first preset time and continues to detect for a second preset time. Since the composition difference between the internal air and the indoor air is small immediately after the ducted air conditioner stops running, and the change in oxygen concentration caused by dirt requires a certain fermentation time, a more accurate measurement result can be obtained by allowing the air detection device to start after the first preset time.

[0052] According to the hygiene testing method for a ducted air conditioner provided by the present invention, the first oxygen concentration value can be the average value among the detection values ​​of the air detection device within a second preset time period. Alternatively, the first oxygen concentration value can also be the maximum value among the detection values ​​of the air detection device within the second preset time period. The maximum value among the detection values ​​of the air detection device within the second preset time period represents the highest oxygen concentration value inside the ducted air conditioner during the testing process. Using this as a basis for judgment can more reliably determine the hygiene condition of the indoor air conditioning unit and prevent misjudgment.

[0053] According to the hygiene inspection method for a ducted air conditioner provided by the present invention, a pressure detection device may also be installed inside the ducted air conditioner, and the pressure detection device is installed on the evaporator of the ducted air conditioner or at the connection position of the evaporator. The hygiene inspection method for the ducted air conditioner preferably includes: during the operation of the ducted air conditioner, the pressure detection device acquires a pressure detection value; by comparing the pressure detection value with a preset pressure range, it is determined whether the ducted air conditioner requires cleaning.

[0054] When the ducted air conditioner is running normally, the evaporator is affected by the wind, and the pressure detection device maintains a slightly positive pressure, keeping the pressure value constant. By comparing the pressure detection value with the preset pressure range, when the pressure detection value is too high, it is clear that the evaporator is affected by the wind too much, indicating that there is dirt on the evaporator affecting airflow.

[0055] According to the hygienic testing method for a ducted air conditioner provided by the present invention, the aforementioned preset pressure range can be the pressure range set at the factory of the ducted air conditioner. Alternatively, the preset pressure range is preferably the initial pressure range defined by the maximum and minimum values ​​of the pressure detection values ​​obtained by the pressure detection device during the first operation of the ducted air conditioner after installation.

[0056] According to the present invention, a hygienic inspection method for a ducted air conditioner includes a pressure detection device that continuously detects pressure for a third preset duration while the ducted air conditioner is running. This third preset duration is the same as the detection duration used to determine the initial pressure range, thereby enabling more accurate detection results. Furthermore, detection results can be obtained within a limited time, eliminating the need to continuously run the pressure detection device during the ducted air conditioner's operation, thus saving energy. The pressure detection value is preferably the minimum value obtained by the pressure detection device within the third preset duration. If the pressure detection value is higher than a preset pressure range, and the difference between the pressure detection value and the maximum value of the preset pressure range exceeds a second preset difference, then the ducted air conditioner is determined to require cleaning. Similar to the principle of the first preset difference described above, setting a second preset difference reduces detection errors caused by misjudgment.

[0057] According to a hygiene inspection method for a ducted air conditioner provided by the present invention, an infrared detection device is installed inside the ducted air conditioner. The infrared detection device includes an infrared emitter located at the edge of the chassis inside the ducted air conditioner and an infrared receiver located on the opposite side of the infrared emitter. The hygiene inspection method for the ducted air conditioner includes: in the standby state of the ducted air conditioner, determining whether the ducted air conditioner needs cleaning based on the proportion of infrared light received by the infrared receiver.

[0058] When there is a significant amount of dust inside the ducted air conditioner, the dirt on the filter and the chassis can affect the propagation path of infrared rays, resulting in a decrease in the proportion of infrared rays received by the infrared receiver. Therefore, by observing the proportion of infrared rays received by the infrared receiver, it is possible to determine the degree of dust accumulation in a localized area inside the ducted air conditioner, and thus whether the ducted air conditioner requires cleaning. Dust often hides in the corners of the machine. Ideally, the infrared emitter should be placed on the edge of the chassis inside the ducted air conditioner, such as on the four edges inside the chassis. The change in the proportion of infrared rays received by the infrared receiver can then be used to determine the level of dirt accumulation inside the machine.

[0059] According to the present invention, a method for hygienic testing of a ducted air conditioner is provided, such as... Figure 3 As shown, the system comprehensively assesses the cleaning needs of the ducted air conditioner based on the detection results from three devices: an air quality detector, a pressure detector, and an infrared detector. It then issues tiered alerts to the user, enabling them to more accurately determine the level of dirt inside the unit. Specifically, a Level 1 cleaning alert is generated if the air quality detector or pressure detector's result exceeds the standard, but the infrared detector's result does not. A Level 2 cleaning alert is generated if both the air quality detector and pressure detector's results exceed the standard, but the infrared detector's result does not. An excessive infrared detector result indicates that the dirt inside the ducted air conditioner has produced harmful byproducts that significantly impact air quality, requiring urgent cleaning. Therefore, regardless of whether a Level 1 or Level 2 cleaning alert has already been generated, a Level 3 cleaning alert is directly generated.

[0060] The present invention also provides a duct air conditioner that can perform any of the hygiene testing methods for duct air conditioners described above.

[0061] According to the present invention, a duct air conditioner is provided with a pre-treatment device inside the duct air conditioner, which can automatically clean the dirt inside the duct air conditioner in its self-cleaning mode. The pre-treatment device preferably includes any of the self-cleaning systems of duct air conditioners described above. The duct air conditioner can automatically activate its self-cleaning mode based on cleaning requirements generated by a hygiene testing method, thereby performing cleaning and / or disinfection through the self-cleaning system.

[0062] The controller of the self-cleaning system for the duct air conditioner of the present invention is preferably integrated with the controller of the duct air conditioner. The controller preferably includes a processor, a communication interface, a memory, and a communication bus, wherein the processor, communication interface, and memory communicate with each other via the communication bus. The processor can call logical instructions in the memory to execute the self-cleaning method for the duct air conditioner and the hygiene detection method for the duct air conditioner provided by the above methods.

[0063] Furthermore, the logical instructions in the aforementioned memory can be implemented as software functional units and sold or used as independent products, and can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0064] On the other hand, the present invention also provides a computer program product, which includes a computer program that can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer is able to execute the self-cleaning method for the duct machine and the hygiene detection method for the duct machine provided by the above methods.

[0065] In another aspect, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the self-cleaning method for the ductwork unit and the hygiene inspection method for the ductwork unit provided by the above methods.

[0066] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0067] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method of hygiene detection of a ducted air conditioner, characterized by, The air duct unit is equipped with an air detection device, which is located inside the air duct of the air duct unit and is used to detect the oxygen concentration in the air. The methods include: In the standby state of the duct unit, the air detection device detects the first oxygen concentration value in the air duct of the duct unit; Start the duct unit; During the operation of the duct unit, the air detection device detects the second oxygen concentration value in the air duct of the duct unit; By comparing the first oxygen concentration value and the second oxygen concentration value, it can be determined whether the duct machine needs cleaning. If the first oxygen concentration value is lower than the second oxygen concentration value, and the difference between the first oxygen concentration value and the second oxygen concentration value exceeds a first preset difference, then it is determined that the duct machine has a cleaning requirement.

2. The method of claim 1, wherein the method further comprises: After the duct unit switches from the running state to the standby state, the air detection device starts after waiting for a first preset time and continues to detect for a second preset time.

3. The method for detecting the hygiene of the ducted fan according to claim 2, wherein The first oxygen concentration value is the average value among the detection values ​​of the air detection device within the second preset time period; Alternatively, the first oxygen concentration value may be the maximum value among the detection values ​​of the air detection device within the second preset time period.

4. The method of claim 1, wherein the method further comprises: The duct air conditioner is equipped with a pressure detection device, which is located on the evaporator of the duct air conditioner or at the connection point of the evaporator. The methods include: During the operation of the duct unit, the pressure detection device acquires pressure detection values; By comparing the pressure detection value with the preset pressure range, it can be determined whether the duct machine has a cleaning requirement.

5. The hygienic testing method for ducted air conditioners according to claim 4, characterized in that, The preset pressure range is the pressure range set at the factory for the duct unit. Alternatively, the preset pressure range is the initial pressure range defined by the maximum and minimum pressure values ​​obtained by the pressure detection device during the first operation of the duct unit after installation.

6. The hygienic testing method for ducted air conditioners according to claim 4, characterized in that, The pressure detection device continuously detects the pressure for a third preset duration while the duct machine is in operation; The pressure detection value is the minimum value obtained by the pressure detection device within the third preset time period; If the pressure detection value is higher than the preset pressure range, and the difference between the pressure detection value and the maximum value of the preset pressure range exceeds a second preset difference, then it is determined that the duct machine has a cleaning requirement.

7. The hygienic testing method for ducted air conditioners according to claim 4, characterized in that, The duct unit is equipped with an infrared detection device, which includes an infrared emitter located at the edge of the chassis inside the duct unit and an infrared receiver located on the opposite side of the infrared emitter. The methods include: In the standby state of the duct air conditioner, the system determines whether the duct air conditioner needs cleaning based on the proportion of infrared light received by the infrared receiver.

8. The hygienic testing method for ducted air conditioners according to claim 7, characterized in that, include: Based on the detection results of the air detection device, the pressure detection device, and the infrared detection device, the cleaning needs of the duct air conditioner are comprehensively determined, and users are given graded reminders. If the air detection device or the pressure detection device exceeds the standard, but the infrared detection device does not exceed the standard, a Level 1 cleaning reminder is generated. The air detection device and the pressure detection device both exceeded the standard, while the infrared detection device did not exceed the standard, generating a level two cleaning reminder; If the infrared detection device detects that the result exceeds the standard, a level three cleaning reminder will be generated.

9. A ducted air conditioner, characterized in that, The duct unit is capable of performing the hygiene testing method for the duct unit as described in any one of claims 1-8.

10. The duct air conditioner according to claim 9, characterized in that, The duct unit is equipped with a pre-treatment device, which can automatically clean the dirt inside the duct unit in the self-cleaning mode. The duct air conditioner can automatically activate the self-cleaning mode based on the cleaning requirements generated by the duct air conditioner's hygiene detection method.

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