Filtering device, duct type air conditioner, filtering control method and storage medium

Abstract

The invention discloses a filtering device, a duct type air conditioner, a filtering control method and a storage medium. The filtering device comprises a filter screen, a shape memory alloy connecting rod and a heating part, the filter screen is installed on the air opening component in an openable and closable mode. The filter screen is connected with the tuyere part through the shape memory alloy connecting rod; the heating part is installed on the shape memory alloy connecting rod, and the temperature of the shape memory alloy connecting rod is changed through the heating part, so that the shape memory alloy connecting rod deforms to drive the filter screen to be opened and closed. Through mutual cooperation of the shape memory alloy connecting rod and the heating part, switching of the opening state and the closing state of the filter screen is achieved, the shape memory alloy connecting rod and the heating part are used for replacing a traditional stepping motor and gear scheme, movement connection is reliable, control is easy, and the reliability of switching of the opening state and the closing state of the filter screen is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to a filtering device, an air duct unit, a filtering control method and a storage medium. Background Art

[0002] Duct air conditioners are referred to as duct units. The indoor unit of a duct unit is usually hidden inside the ceiling. The heat exchanged air is blown into the room through the air outlet of the indoor unit to adjust the indoor temperature. Due to the different densities of cold and hot air, cold air sinks and hot air rises. Currently, duct units are equipped with upper and lower air outlets, which can discharge air upwards during cooling and downwards during heating, greatly improving the comfort of air conditioning cooling and heating.

[0003] As an important part of the air conditioner, the filter is installed at the air outlet. It is usually used for filtering at the return air. After filtering the impurities in the return air, it is blown to the heat exchanger and sent to the room from the air outlet after heat exchange. The filter is installed at the upper air outlet of the duct air conditioner. When cooling, the air is discharged from the upper air outlet and does not need to be filtered. When heating, the return air from the upper air outlet needs to be filtered. For the filter at the lower air outlet, the return air from the lower air outlet needs to be filtered during cooling, and the air from the lower air outlet does not need to be filtered during heating. Therefore, the filter needs to be switched between the cooling mode and the heating mode at the air outlet.

[0004] At present, in the filter assembly part of the air outlet, a stepper motor is used, and the motor shaft and gears cooperate with each other to make the filter at the air outlet open when filtering is not needed, and close when filtering is needed to play a filtering role. However, the above scheme of using a stepper motor, a motor shaft and a gear to control the opening and closing of the filter has too many moving parts and motor parts, and the reliability is extremely uncertain.

[0005] With regard to the problem of low reliability of the prior art of using motors and gears to switch the opening and closing states of the filter, no effective solution has been proposed so far. Summary of the invention

[0006] The embodiments of the present invention provide a filtering device, a duct machine, a filtering control method and a storage medium, so as to at least solve the problem of low reliability in the prior art of using a motor and a gear to switch the opening and closing state of the filter.

[0007] In order to solve the above technical problems, an embodiment of the present invention provides a filtering device, comprising: a filter screen, a shape memory alloy connecting rod and a heating component;

[0008] The filter screen can be installed on the tuyere component in an openable and closable manner;

[0009] The filter screen is connected to the tuyere component via the shape memory alloy connecting rod;

[0010] The heating component is installed on the shape memory alloy connecting rod. The heating component is used to change the temperature of the shape memory alloy connecting rod, so that the shape memory alloy connecting rod is deformed to drive the filter screen to open and close.

[0011] Optionally, the first side of the filter is mounted on the air outlet component, and rotates around the first side as an axis when the filter is opened or closed.

[0012] Optionally, the first end of the shape memory alloy connecting rod is mounted on the tuyere component, a guide groove is provided on the filter screen, the second end of the shape memory alloy connecting rod is mounted in the guide groove, and the second end of the shape memory alloy connecting rod can slide in the guide groove.

[0013] Optionally, the heating component is arranged on the surface or inside of the shape memory alloy connecting rod.

[0014] Optionally, the heating component corresponds to at least one temperature level, and different temperature levels correspond to different deformation degrees and different filter opening angles. When the heating component is turned off, the shape memory alloy connecting rod returns to its original shape to close the filter.

[0015] Optionally, an air guide plate is provided at the air outlet component, and when the air guide plate is opened and filtering is not required, the opening angle of the filter screen matches the opening angle of the air guide plate.

[0016] The embodiment of the present invention further provides an air duct machine, comprising: an air outlet component, on which the filtering device described in the embodiment of the present invention is installed.

[0017] The embodiment of the present invention further provides a filtering control method, which is applied to the filtering device described in the embodiment of the present invention, and the method includes:

[0018] When the tuyere component is discharging air, the heating component is turned on to deform the shape memory alloy connecting rod to open the filter;

[0019] When the tuyere component returns air, the heating component is turned off to restore the shape memory alloy connecting rod to its original shape to close the filter screen.

[0020] Optionally, turning on the heating component to deform the shape memory alloy connecting rod to open the filter screen includes:

[0021] determining a target opening angle of the filter;

[0022] Determine the temperature level corresponding to the target opening angle as the target temperature level;

[0023] The heating component is controlled to heat according to the target temperature level, so that the shape memory alloy connecting rod is deformed corresponding to the target temperature level, and the filter is opened to the target opening angle.

[0024] Optionally, determining a target opening angle of the filter screen includes:

[0025] Determine the current opening angle of the air deflector;

[0026] The opening angle of the air guide plate is used as the target opening angle.

[0027] Optionally, the method further comprises:

[0028] Receive shutdown command;

[0029] The heating component is turned off to restore the shape memory alloy connecting rod to its original shape to close the filter screen.

[0030] The embodiment of the present invention further provides a non-volatile computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the steps of the method described in the embodiment of the present invention are implemented.

[0031] By applying the technical solution of the present invention, the shape memory alloy connecting rod and the heating component cooperate with each other, and the heating component is used to change the temperature of the shape memory alloy connecting rod, so that the shape memory alloy connecting rod is deformed to drive the filter to open and close, thereby realizing the opening and closing state conversion of the filter. The shape memory alloy connecting rod and the heating component are used to replace the traditional stepping motor and gear solution, the motion connection is reliable, the control is simple, and the reliability of the filter opening and closing state switching is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a schematic diagram of a filtering device provided by an embodiment of the present invention;

[0033] Figure 2 is a schematic diagram of the state of the filter device in the cooling mode provided by an embodiment of the present invention;

[0034] Figure 3 is a schematic diagram of the state of the filter device in the heating mode provided by an embodiment of the present invention;

[0035] Figure 4 is a flow chart of a filtering control method provided by an embodiment of the present invention;

[0036] Figure 5 This is a control flow chart of the filter device when the duct air conditioner is turned on and running according to an embodiment of the present invention;

[0037] Figure 6This is a control flow chart of the filter device when the air duct is shut down provided by an embodiment of the present invention;

[0038] Figure 7 is a schematic diagram of the hardware structure of an electronic device provided by an embodiment of the present invention;

[0039] Description of reference numerals:

[0040] Filter 1, shape memory alloy connecting rod 2, heating component 3, air outlet component 4, guide groove 5, air guide plate 6, fan 7, heat exchanger 8. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] It should be noted that the terms "first", "second", etc. in the specification, claims and drawings of the present invention are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0043] It should be noted that the steps shown in the flowcharts of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and that, although a logical order is shown in the flowcharts, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0044] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0045] The optional embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0046] Example 1

[0047] In order to solve the problem of switching between the open and closed states of the filter, this embodiment provides a filtering device. Figure 1 Schematic diagram of a filtering device provided in an embodiment of the present invention, such as Figure 1 As shown, the filtering device includes: a filter screen 1, a shape memory alloy connecting rod 2 and a heating component 3.

[0048] The filter 1 can be installed on the tuyere component 4 in an openable and closable manner, and the tuyere component 4 can discharge air or return air. The opening and closing of the filter 1 refers to the tuyere component 4. The filter 1 fits with the tuyere component 4, that is, when the filter 1 is closed, the filter 1 plays a filtering role and filters the return air entering the tuyere component 4; the filter 1 does not fit with the tuyere component 4 and is at a certain angle, that is, when the filter 1 is open, the filter 1 does not play a filtering role.

[0049] The filter 1 is connected to the air outlet component 4 through the shape memory alloy connecting rod 2. The heating component 3 is installed on the shape memory alloy connecting rod 2. The heating component 3 is used to change the temperature of the shape memory alloy connecting rod 2, so that the shape memory alloy connecting rod 2 is deformed to drive the filter 1 to open and close.

[0050] Shape memory alloy is a material with extremely high memory effect and superelasticity, which can deform when its own temperature or other conditions change. For example, shape memory alloy can maintain its existing shape when it is below its phase transition temperature. When heated to the phase transition temperature, the strain disappears and it changes into another shape. Shape memory alloys use different materials and their phase transition temperatures are also different. For example, the martensite phase transition temperature of shape memory alloy is 40℃, and the austenite phase transition temperature is 60℃. Multiple phase transition temperatures can be set to give shape memory alloys a variety of different deformation degrees.

[0051] In this embodiment, the shape memory alloy connecting rod 2 and the heating component 3 cooperate with each other, and the heating component 3 is used to change the temperature of the shape memory alloy connecting rod 2, so that the shape memory alloy connecting rod 2 is deformed to drive the filter 1 to open and close, thereby realizing the opening and closing state conversion of the filter 1. The shape memory alloy connecting rod 2 and the heating component 3 are used to replace the traditional stepping motor and gear solution, the motion connection is reliable, the control is simple, and the reliability of the filter opening and closing state switching is improved.

[0052] The first side of the filter screen 1 is mounted on the tuyere component 4. When the filter screen 1 is opened or closed, it rotates around the first side as an axis. The rotatable arrangement ensures that the filter screen 1 can be opened or closed. The first side of the filter screen 1 can be fixedly mounted on the tuyere component 4 or detachably mounted on the tuyere component 4, so that it is easy to disassemble for maintenance or cleaning.

[0053] The first end of the shape memory alloy connecting rod 2 is mounted on the air outlet component 4, the filter screen 1 is provided with a guide groove 5, the second end of the shape memory alloy connecting rod 2 is mounted in the guide groove 5, and the second end of the shape memory alloy connecting rod 2 can slide in the guide groove 5. In this embodiment, by providing the guide groove 5, it is possible to facilitate the sliding of the shape memory alloy connecting rod 2 to generate a push-pull force.

[0054] The heating component 3 is disposed on the surface or inside of the shape memory alloy connecting rod 2, so that the temperature of the shape memory alloy connecting rod 2 can be easily changed to promote deformation.

[0055] In practical applications, two symmetrical shape memory alloy connecting rods 2 can be provided and controlled synchronously to more stably change the opening and closing state of the filter screen and prevent the filter screen from being skewed.

[0056] The heating component 3 corresponds to at least one temperature level, and different temperature levels correspond to different deformation degrees and different filter opening angles, thereby being able to control the filter opening angle according to demand. When the heating component 3 is turned off, the shape memory alloy connecting rod 2 returns to its initial shape to close the filter 1.

[0057] The air outlet component 4 is provided with an air guide plate 6. When the air outlet component 4 needs to discharge air or return air, the air guide plate 6 is opened. The air guide plate 6 can be opened at a fixed angle by default, such as 45°, or the opening angle of the air guide plate can be controlled according to actual needs, for example, the adjustable range is 0 to 90°. When the air outlet component 4 does not need to discharge air or return air, the air guide plate 6 is closed. When the air guide plate 6 is opened and filtering is not required, the opening angle of the filter 1 matches the opening angle of the air guide plate 6, thereby ensuring smooth air circulation at the air outlet component 4.

[0058] Example 2

[0059] This embodiment provides an air duct unit, comprising: an air outlet component, on which the filter device described in the above embodiment is installed.

[0060] In this embodiment, the above-mentioned filtering device is arranged at the air outlet component of the air duct machine. Through the mutual cooperation of the shape memory alloy connecting rod and the heating component, the temperature of the shape memory alloy connecting rod is changed by the heating component, so that the shape memory alloy connecting rod is deformed to drive the filter to open and close, thereby realizing the opening and closing state conversion of the filter. The shape memory alloy connecting rod and the heating component are used to replace the traditional stepping motor and gear solution, the motion connection is reliable, the control is simple, and the reliability of the filter opening and closing state switching is improved.

[0061] The following is an example of installing the above-mentioned filtering device at the upper air outlet of a duct air conditioner.

[0062] like Figure 2As shown, it is a schematic diagram of the state of the filter device in the cooling mode. When the cooling is running, the lower air outlet returns air, and the fan 7 blows air to the heat exchanger 8. After the heat exchange, the air is discharged from the upper air outlet to realize the blowing-type air supply. In this case, the air is discharged from the upper air outlet and does not need to be filtered. Therefore, the shape memory alloy connecting rod 2 is heated by the heating component 3. When the temperature of the shape memory alloy connecting rod 2 reaches the phase change temperature T, the shape change begins to occur and finally becomes a bent shape. The tension when the shape change occurs on the guide groove 5 makes the filter 1 open. At this time, the air duct machine realizes the cooling upward blowing function to prevent cold air from blowing directly on people.

[0063] like Figure 3 As shown, it is a schematic diagram of the state of the filtering device in the heating mode. When the heating is running, the upper air outlet returns air, and the fan 7 sucks the air after heat exchange by the heat exchanger 8, and discharges the air from the lower air outlet to realize suction-type air supply. In this case, the return air from the upper air outlet needs to be filtered, so the heating component 3 is turned off, and the shape memory alloy connecting rod 2 will maintain its original initial shape at low temperature, so that the filter 1 remains in a closed state to play a filtering role. At this time, the duct machine realizes the suction-type lower air outlet state in the heating mode, realizing the effect of hot air following people and carpet-style heating.

[0064] Example 3

[0065] This embodiment provides a filtering control method, which is applied to the filtering device described in the above embodiment. Figure 4 is a flow chart of a filtering control method provided by an embodiment of the present invention, such as Figure 4 As shown, the method comprises the following steps:

[0066] S401, when the air outlet component 4 is discharging air, the heating component 3 is turned on to deform the shape memory alloy connecting rod 2 to open the filter 1.

[0067] S402, when the tuyere component 4 returns air, the heating component 3 is turned off to restore the shape memory alloy connecting rod 2 to its original shape to close the filter screen 1.

[0068] In this embodiment, the shape memory alloy connecting rod 2 and the heating component 3 cooperate with each other, and the heating component 3 is used to change the temperature of the shape memory alloy connecting rod 2, so that the shape memory alloy connecting rod 2 is deformed to drive the filter 1 to open and close, so that it can play a filtering role when the air outlet component 4 returns air, and realize the opening and closing state conversion of the filter 1. The shape memory alloy connecting rod 2 and the heating component 3 replace the traditional stepping motor and gear solution, the motion connection is reliable, the control is simple, and the reliability of the filter opening and closing state switching is improved.

[0069] In one embodiment, the heating component 3 is turned on to deform the shape memory alloy connecting rod 2 to open the filter 1, including: determining a target opening angle of the filter 1; determining a temperature level corresponding to the target opening angle as a target temperature level; and controlling the heating component 3 to heat according to the target temperature level so that the shape memory alloy connecting rod 2 is deformed corresponding to the target temperature level, so that the filter 1 is opened to the target opening angle.

[0070] This embodiment utilizes the temperature level of the heating component 3 to control the deformation of the shape memory alloy connecting rod 2 , so that the filter 1 can be opened to a target opening angle, thereby meeting the air volume requirement of the air outlet component 4 .

[0071] Further, determining the target opening angle of the filter 1 includes: determining the current opening angle of the air guide plate; and using the opening angle of the air guide plate as the target opening angle. In this embodiment, the filter opening angle is kept consistent with the opening angle of the air guide plate, so that the opening angles of the two are matched, thereby ensuring smooth air flow at the air outlet component 4.

[0072] The above method may further include: upon receiving a shutdown instruction, turning off the heating component 3, so that the shape memory alloy connecting rod 2 returns to its original shape, so as to close the filter screen 1. Thus, the filter screen can be closed when shutting down, and the shutdown operation is successfully completed.

[0073] The above-mentioned filtering control method is described below in conjunction with a specific embodiment. However, it is worth noting that this specific embodiment is only for better illustrating the present application and does not constitute an improper limitation on the present application. The explanation of terms that are the same or corresponding to the above-mentioned embodiment will not be repeated in this embodiment.

[0074] like Figure 5 As shown, taking the above-mentioned filter device being set at the upper air outlet of the duct air conditioner as an example, the control process of the filter device when the duct air conditioner is turned on and running includes the following steps:

[0075] S501, turn on the computer.

[0076] S502, receiving a cooling instruction.

[0077] S503, the heating component 3 is electrically heated.

[0078] S504, the shape memory alloy connecting rod 2 changes into a bent shape.

[0079] S505, filter 1 remains in the open state.

[0080] S506, receiving a heating instruction.

[0081] S507, the heating component 3 loses power and stops heating.

[0082] S508, the shape memory alloy connecting rod 2 maintains its initial shape under low temperature conditions.

[0083] S509, the filter screen 1 is closed to play a filtering role.

[0084] When the duct unit is turned on and receives a cooling command, the heating component 3 mounted on the shape memory alloy connecting rod 2 is powered on and starts to heat. When the temperature of the connecting rod reaches the phase transition temperature T, the shape memory alloy connecting rod 2 begins to change shape and finally becomes a bent shape (refer to Figure 2 ), the filter 1 is opened by the tension caused by the shape change on the guide groove 5. At this time, the reversible air supply duct machine is in a blowing upward air outlet state when running in the cooling mode, realizing the cooling upward blowing function and preventing cold air from blowing directly on people.

[0085] When the duct unit is turned on and receives a heating command, the heating component 3 remains in a power-off state, and the shape memory alloy connecting rod 2 maintains its original shape at low temperatures, so that the filter screen 1 remains in a closed state (refer to Figure 3 ), at this time, the reversible air supply duct machine is in the suction type downward air outlet state when operating in the heating mode. The filter 1 plays a filtering role and can achieve the effect of hot air following people and carpet heating.

[0086] like Figure 6 As shown, taking the above-mentioned filter device being set at the upper air outlet of the duct air conditioner as an example, the control process of the filter device when the duct air conditioner is turned off includes the following steps:

[0087] S601, power off.

[0088] S602, the heating component 3 loses power and does not heat.

[0089] S603, filter 1 is closed.

[0090] S604, the air outlet component 4 is closed, and the shutdown action is completed.

[0091] When the duct machine receives a shutdown command, the heating component 3 loses power, the shape memory alloy connecting rod 2 remains in a low temperature state and returns to its original shape, so that the filter 1 remains in a closed state, and the air outlet component 4 closes to complete the shutdown action.

[0092] Example 4

[0093] Based on the same inventive concept, this embodiment provides a filtering control device, which is applied to the filtering device described in the embodiment of the present invention and can be used to implement the filtering control method described in the above embodiment. The filtering control device can be implemented by software and / or hardware, and the filtering control device can generally be integrated into an air conditioning controller.

[0094] The filtration control device comprises:

[0095] The first control module is used to turn on the heating component when the air outlet component is discharging air, so as to deform the shape memory alloy connecting rod to open the filter;

[0096] The second control module is used to turn off the heating component when the air outlet component returns air, so that the shape memory alloy connecting rod returns to its original shape to close the filter.

[0097] Optionally, the first control module includes:

[0098] A first determining unit, used to determine a target opening angle of the filter;

[0099] A second determining unit, configured to determine a temperature level corresponding to the target opening angle as a target temperature level;

[0100] The control unit is used to control the heating component to heat according to the target temperature level, so that the shape memory alloy connecting rod is deformed corresponding to the target temperature level, and the filter is opened to the target opening angle.

[0101] Optionally, the first determination unit is specifically used to: determine a current opening angle of the air deflector; and use the opening angle of the air deflector as the target opening angle.

[0102] Optionally, the filtering control device further includes:

[0103] A receiving module, used for receiving a shutdown instruction;

[0104] The third control module is used to turn off the heating component to restore the shape memory alloy connecting rod to its original shape to close the filter screen.

[0105] The above-mentioned filtering control device can execute the filtering control method provided by the embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method. For technical details not described in detail in this embodiment, please refer to the filtering control method provided by the embodiment of the present invention.

[0106] The above-described embodiments of the filtering control device are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, i.e., they may be located in one place or distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the present embodiment.

[0107] Example 5

[0108] This embodiment provides a non-volatile computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the steps of the filtering control method described in the above embodiment are implemented.

[0109] Example 6

[0110] This embodiment provides an electronic device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the filtering control method described in the above embodiment when executing the computer program.

[0111] Figure 7 is a schematic diagram of the hardware structure of an electronic device provided by an embodiment of the present invention, such as Figure 7 As shown, the electronic device includes:

[0112] One or more processors 710 and memory 720, Figure 7 A processor 710 is taken as an example.

[0113] The electronic device may further include: an input device 730 and an output device 740 .

[0114] The processor 710, the memory 720, the input device 730 and the output device 740 may be connected via a bus or other means. Figure 7 The example of connecting through bus is taken in the following.

[0115] The memory 720 is a non-volatile computer-readable storage medium that can be used to store non-volatile software programs, non-volatile computer executable programs and modules, such as program instructions / modules corresponding to the filtering control method in the embodiment of the present invention. The processor 710 executes various functional applications and data processing by running the non-volatile software programs, instructions and modules stored in the memory 720, that is, implementing the above-mentioned filtering control method.

[0116] The memory 720 may include a program storage area and a data storage area, wherein the program storage area may store an application required for the operating device and at least one function; the data storage area may store temperature gears and their corresponding opening angles, etc. In addition, the memory 720 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other non-volatile solid-state storage devices.

[0117] The input device 730 may receive input digital or character information and generate key signal input related to user settings and function control of the electronic device. The output device 740 may include a display device such as a display screen.

[0118] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0119] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A filtering device, characterized in that: include: Filter, shape memory alloy connecting rod and heating component; The filter screen can be installed on the tuyere component in an openable and closable manner; The filter screen is connected to the tuyere component via the shape memory alloy connecting rod; The heating component is installed on the shape memory alloy connecting rod. The heating component is used to change the temperature of the shape memory alloy connecting rod, so that the shape memory alloy connecting rod is deformed to drive the filter screen to open and close.

2. The filtering device according to claim 1, characterized in that: The first side of the filter is mounted on the air outlet component, and rotates around the first side as an axis when the filter is opened or closed.

3. The filtering device according to claim 1, characterized in that: The first end of the shape memory alloy connecting rod is installed on the air outlet component, the filter screen is provided with a guide groove, the second end of the shape memory alloy connecting rod is installed in the guide groove, and the second end of the shape memory alloy connecting rod can slide in the guide groove.

4. The filtering device according to claim 1, characterized in that: The heating component is arranged on the surface or inside of the shape memory alloy connecting rod.

5. The filtering device according to claim 1, characterized in that: The heating component corresponds to at least one temperature level, and different temperature levels correspond to different deformation degrees and different filter opening angles. When the heating component is turned off, the shape memory alloy connecting rod returns to its initial shape to close the filter.

6. The filtering device according to claim 1, characterized in that: The air outlet component is provided with an air guide plate. When the air guide plate is opened and filtering is not required, the opening angle of the filter screen matches the opening angle of the air guide plate.

7. A duct machine, characterized in that: include: An air outlet component, wherein the filter device according to any one of claims 1 to 6 is installed on the air outlet component.

8. A filtering control method, characterized in that: The filter device according to any one of claims 1 to 6, wherein the method comprises: When the tuyere component is discharging air, the heating component is turned on to deform the shape memory alloy connecting rod to open the filter; When the tuyere component returns air, the heating component is turned off to restore the shape memory alloy connecting rod to its original shape to close the filter screen.

9. The method according to claim 8, characterized in that Turn on the heating component to deform the shape memory alloy connecting rod to open the filter, including: determining a target opening angle of the filter; Determine the temperature level corresponding to the target opening angle as the target temperature level; The heating component is controlled to heat according to the target temperature level, so that the shape memory alloy connecting rod is deformed corresponding to the target temperature level, and the filter is opened to the target opening angle.

10. The method according to claim 9, characterized in that Determining a target opening angle of the filter screen includes: Determine the current opening angle of the air deflector; The opening angle of the air guide plate is used as the target opening angle.

11. The method according to claim 8, characterized in that Also includes: Receive shutdown command; The heating component is turned off to restore the shape memory alloy connecting rod to its original shape to close the filter screen.

12. A non-volatile computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 8 to 11 are implemented.

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