Dehumidifiers and their control methods

Abstract

This invention provides a dehumidifier and its control method. The dehumidifier includes a housing, within which a filter assembly, a heat exchanger module, a fan, and a dust collection box are arranged sequentially. The filter assembly includes a baffle plate and filter components connected to the baffle plate. When the filter assembly is in the self-cleaning position, the baffle plate is positioned between the air inlet and the heat exchanger module, obstructing the heat exchanger module. Airflow entering from the air inlet flows sequentially through the filter components, dust collection box, fan, and air outlet. According to this invention, when the filter assembly is in the self-cleaning position, the fan is controlled to operate at high speed, causing high-speed airflow to flow sequentially through the filter components and dust collection box. The strong airflow blows dust from the filter screen into the dust collection box, thereby achieving automatic cleaning of the filter components, ensuring smooth airflow in the machine, and solving the problem of reduced dehumidification performance due to filter clogging during dehumidification.

Description

Technical Field

[0001] This invention belongs to the field of dehumidification technology, specifically relating to a dehumidifier and its control method. Background Technology

[0002] The dehumidifier's filter is located at the air inlet. The filter is designed to block dust from the air, preventing dust buildup on the unit and reducing dehumidification efficiency. Currently, consumers are responsible for cleaning the filters themselves, but after-sales feedback indicates that users don't clean them frequently enough. This lack of cleaning leads to dust accumulation and blockages, increasing air resistance and reducing dehumidification. Furthermore, a clogged filter can cause the internal temperature to overheat, posing a safety hazard. If the dehumidifier had a self-cleaning function, regularly cleaning the filter would solve the problems caused by users neglecting to clean it regularly, leading to dust accumulation and blockages. Summary of the Invention

[0003] Therefore, the present invention provides a dehumidifier that can solve the technical problem that existing dehumidifiers do not have a self-cleaning function, and when users do not clean the filter screen for a long time, dust will easily accumulate on the surface of the filter screen and form dirt blockage, thereby increasing the machine's air resistance and affecting the dehumidification effect.

[0004] To address the aforementioned problems, this invention provides a dehumidifier, comprising: a housing having an air inlet and an air outlet; a filter assembly, a two-phase module, a fan, and a dust collection box disposed within the housing; the filter assembly, the two-phase module, and the fan being arranged sequentially along the airflow path from the air inlet to the air outlet; the filter assembly including a baffle plate and a filter element connected to the baffle plate; the filter assembly having a self-cleaning position; when the filter assembly is in the self-cleaning position, the baffle plate is positioned between the air inlet and the two-phase module, thus shielding the two-phase module; and the airflow entering through the air inlet can sequentially flow through the filter element, the dust collection box, the fan, and the air outlet.

[0005] In some embodiments, a ventilation structure is provided below the two-device module. The ventilation structure has a receiving cavity with an air inlet and an air outlet. The air inlet faces the side where the baffle plate is located, and the air outlet faces the side where the fan is located. The receiving cavity is used to receive the filter component. When the filter component is in the receiving cavity, it is in the self-cleaning position. The dust collection box is located between the air outlet and the fan.

[0006] In some embodiments, a first groove is formed on the side wall of the receiving cavity, and the filter assembly further includes a first sliding shaft connected to the filter component. The end of the first sliding shaft away from the filter component is inserted into the first groove, and the first sliding shaft is slidable along the guiding direction of the first groove.

[0007] In some embodiments, the first chute includes a first guide section, a turning section, and a second guide section connected in sequence, with the first guide section opposite to the second guide section.

[0008] In some embodiments, a guide rail is provided on the inner surface of the housing, the guide rail is located between the air inlet and the two-component module, a second sliding groove is constructed on the guide rail, the filter assembly further includes a second sliding shaft, the second sliding shaft is connected to the baffle plate, one end of the second sliding shaft away from the baffle plate is inserted into the second sliding groove, and the second sliding shaft can slide along the guiding direction of the second sliding groove.

[0009] In some implementations, the ventilation area of ​​the exhaust vent is smaller than the ventilation area of ​​the two-device module.

[0010] In some embodiments, a damper is provided at the exhaust vent, which is used to open or close the exhaust vent.

[0011] In some embodiments, the dust collection box has an inlet and an air vent, the inlet facing the exhaust port and the air vent located between the inlet and the fan.

[0012] In some embodiments, the filter assembly also has an initial working position, in which the filter element is located between the air inlet and the two-phase module. The airflow entering from the air inlet flows sequentially through the filter element, the two-phase module, the fan, and the air outlet. It also includes a first driving component and a transmission component, wherein the first driving component drives the filter assembly to switch between the initial working position and the self-cleaning position through the transmission component.

[0013] In some embodiments, the first drive component has a rotatable output shaft, the transmission component is connected to the output shaft, the transmission component has a first tooth, and the filter component includes a frame and a filter screen mounted on the frame, the frame having a second tooth that meshes with the first tooth.

[0014] The present invention also provides a control method for a dehumidifier, used to control the operation of the dehumidifier, the control method comprising:

[0015] The step involves obtaining the operating time T of the dehumidifier.

[0016] Determine the execution step based on T and T 设 The size relationship between them controls the switching of the filter assembly between the initial working position and the self-cleaning position, and controls the opening or closing of the exhaust port by the damper, wherein T 设 This is the preset runtime value.

[0017] In some implementations, when T≥T 设 At that time, control the filter assembly to switch to the self-cleaning position, and control the damper to open the exhaust vent; or,

[0018] When T < T 设 When the filter component is switched to the initial working position, the damper is controlled to close the exhaust port.

[0019] The dehumidifier and its control method provided by this invention have the following beneficial effects:

[0020] By designing the filter assembly to consist of a baffle plate and filter elements, when the filter assembly is in the self-cleaning position, the baffle plate is positioned between the air inlet and the two-phase module, obstructing the two-phase module. At this time, the fan is controlled to run at high speed. Because the airflow path from the air inlet to the two-phase module is obstructed, the high-speed airflow entering from the air inlet cannot pass through the two-phase module, but is instead guided sequentially through the filter elements, dust collection box, and fan, before being discharged from the air outlet. During the high-speed airflow through the filter elements and dust collection box, the strong airflow blows dust from the filter screen into the dust collection box, thus achieving automatic cleaning of the filter elements, preventing clogging, ensuring smooth airflow in the machine, and solving the problem of reduced dehumidification performance due to filter clogging. It also solves the problem of excessively high internal temperatures caused by clogged filters, which could lead to safety hazards. Attached Figure Description

[0021] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the dehumidifier in self-cleaning mode according to an embodiment of the present invention;

[0023] Figure 2 for Figure 1 An enlarged schematic diagram of point A of the dehumidifier in this embodiment of the invention;

[0024] Figure 3 This is a schematic diagram of the dehumidifier in dehumidification mode according to an embodiment of the present invention;

[0025] Figure 4 for Figure 3 An enlarged schematic diagram of point B of the dehumidifier in this embodiment of the invention;

[0026] Figure 5 This is an exploded schematic diagram of a dehumidifier according to an embodiment of the present invention;

[0027] Figure 6 This is a schematic diagram of the filter assembly of the dehumidifier according to an embodiment of the present invention;

[0028] Figure 7 This is an enlarged schematic diagram of point C of the filter assembly of the dehumidifier according to an embodiment of the present invention;

[0029] Figure 8 This is a schematic diagram of the transmission components of a dehumidifier according to an embodiment of the present invention;

[0030] Figure 9 for Figure 8 An enlarged schematic diagram of point D of the transmission component of the dehumidifier in this embodiment of the invention;

[0031] Figure 10 This is a schematic diagram showing the meshing of the transmission component and the filter component of the dehumidifier according to an embodiment of the present invention;

[0032] Figure 11 This is a top view of the ventilation structure of the dehumidifier according to an embodiment of the present invention;

[0033] Figure 12 for Figure 11 An enlarged schematic diagram of point E of the dehumidifier in this embodiment of the invention;

[0034] Figure 13 This is a schematic diagram of the structure of the dehumidifier's support frame according to an embodiment of the present invention;

[0035] Figure 14 for Figure 13 An enlarged schematic diagram of point F of the dehumidifier in an embodiment of the present invention;

[0036] Figure 15 This is a schematic diagram of the rear casing of the dehumidifier according to an embodiment of the present invention;

[0037] Figure 16 This is a schematic diagram of the dust collection box of the dehumidifier according to an embodiment of the present invention;

[0038] Figure 17 This is a cross-sectional schematic diagram of the dust collection box of the dehumidifier according to an embodiment of the present invention;

[0039] Figure 18This is a control logic diagram of the dehumidifier control method according to an embodiment of the present invention.

[0040] The reference numerals in the attached figures are as follows:

[0041] 1. Air inlet; 2. Air outlet; 3. Filter assembly; 31. Baffle plate; 32. Filter component; 33. First sliding shaft; 34. Second sliding shaft; 35. Second toothed section; 4. Two-phase module; 5. Fan; 6. Dust collection box; 7. Ventilation structure; 8. Air inlet; 9. Air outlet; 10. First slide rail; 11. Guide rail; 12. Second slide rail; 13. Air damper; 14. Inlet; 15. Air passage hole; 16. First drive component; 17. Transmission component; 18. First toothed section; 19. Front shell; 20. Bracket; 21. Water tray; 22. Top cover; 23. Second drive component; 24. Chassis; 25. Rear shell; 26. Air inlet grille; 27. Water tank. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0044] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0045] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0046] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0047] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0048] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0049] See also Figures 1 to 5As shown, according to an embodiment of the present invention, a dehumidifier is provided, comprising: a housing having an air inlet 1 and an air outlet 2, and a filter assembly 3, a dual-function module 4, a fan 5, and a dust collection box 6 disposed within the housing. The filter assembly 3, the dual-function module 4, and the fan 5 are arranged sequentially along the airflow path from the air inlet 1 to the air outlet 2. The filter assembly 3 includes a baffle plate 31 and a filter element 32 connected to the baffle plate 31. The filter assembly 3 has a self-cleaning position. When the filter assembly 3 is in the self-cleaning position, the baffle plate 31 is positioned between the air inlet and the dual-function module 4, thus blocking the dual-function module 4. The airflow entering from the air inlet can sequentially flow through the filter element 32, the dust collection box 6, the fan 5, and the air outlet 2.

[0050] In this technical solution, the filter assembly 3 is designed to consist of a baffle plate 31 and a filter element 32. When the filter assembly 3 is in the self-cleaning position, the baffle plate 31 is positioned between the air inlet 1 and the two-phase module 4, blocking the two-phase module 4. At this time, the fan 5 is controlled to run at high speed. Because there is an obstruction in the airflow path from the air inlet 1 to the two-phase module 4, the high-speed airflow entering from the air inlet 1 cannot pass through the two-phase module 4. Instead, it is guided to flow sequentially through the filter element 32, the dust collection box 6, and the fan 5, and then discharged from the air outlet 2. During the high-speed airflow through the filter element 32 and the dust collection box 6, the strong airflow can blow the dust on the filter screen into the dust collection box 6, thereby achieving automatic cleaning of the filter element 32, preventing the filter element 32 from becoming clogged, ensuring smooth airflow in the machine, and solving the problem of reduced dehumidification performance caused by clogged filters when using a dehumidifier. It also solves the problem that clogged filters can easily cause the internal temperature of the machine to become too high, leading to safety hazards. When filter component 3 is in the self-cleaning position, the dehumidifier operates in self-cleaning mode. The dual-function module 4 mainly includes an evaporator and a condenser.

[0051] See also Figure 1 and Figure 2 As shown, a ventilation structure 7 is provided below the two-device module 4. The ventilation structure 7 has a receiving cavity with an air inlet 8 and an air outlet 9. The air inlet 8 faces the side where the baffle plate 31 is located, and the air outlet 9 faces the side where the fan 5 is located. The receiving cavity is used to receive the filter component 32. When the filter component 32 is in the receiving cavity, it is in a self-cleaning position. The dust collection box 6 is located between the air outlet 9 and the fan 5.

[0052] In this embodiment, when the baffle 31 is positioned between the air inlet 1 and the two-component module 4 and blocks the two-component module 4, the ventilation structure 7 can be used to replan the path of the airflow entering from the air inlet 1. This ensures that when the filter component 32 is in the receiving cavity, i.e., when the filter assembly 3 is in the self-cleaning position, the entire filter component 32 can be completely blown by the high-speed airflow, thereby ensuring the dust removal effect. Furthermore, a water collection tray 21 is also provided between the two-component module 4 and the ventilation structure 7 to collect condensate.

[0053] See also Figure 7 , Figure 13 and Figure 14 As shown, a first groove 10 is constructed on the side wall of the receiving cavity. The filter assembly 3 also includes a first sliding shaft 33, which is connected to the filter component 32. The end of the first sliding shaft 33 away from the filter component 32 is inserted into the first groove 10, and the first sliding shaft 33 can slide along the guiding direction of the first groove 10.

[0054] In this technical solution, by constructing a first groove 10 on the side wall of the receiving cavity, the first sliding shaft 33 of the filter assembly 3 is inserted into the first groove 10 and can slide along the guiding direction of the first groove 10. This facilitates the installation of the filter component 32, and ensures that when the filter assembly 3 is switched to the self-cleaning position, it travels along a preset route and enters the ventilation structure 7. Preferably, the first sliding shaft 33 is located at the foremost part of the filter component 32, which makes it easier for the first sliding shaft 33 to accurately guide the movement of the filter component 32. Here, the foremost part refers to the side of the filter component 32 away from the baffle plate 31.

[0055] See also Figure 2 As shown, the first chute 10 includes a first guide section, a turning section and a second guide section connected in sequence, with the first guide section and the second guide section opposite to each other.

[0056] In this embodiment, after the filter component 32 enters the ventilation structure 7 along the first slide groove 10, the filter component 32 will be folded in half. This ensures that the ventilation structure 7 can accommodate the filter component 32 while saving space, making the ventilation structure 7 smaller. Simultaneously, when the filter component 32 is folded in half within the ventilation structure 7, the high-speed airflow can also reach the reverse side of the filter component 32, further improving the dust removal effect. More specifically, the guiding direction of the first slide groove 10 can be modified so that the filter component 32 is arranged in a circle or other shape within the ventilation structure 7, as long as it achieves space saving and ensures that the airflow reaches the reverse side of the filter component 32.

[0057] See also Figure 1As shown, a guide rail 11 is provided on the inner surface of the housing. The guide rail 11 is located between the air inlet 1 and the two-component module 4. A second sliding groove 12 is constructed on the guide rail 11. The filter assembly 3 also includes a second sliding shaft 34. The second sliding shaft 34 is connected to the baffle plate 31. One end of the second sliding shaft 34 away from the baffle plate 31 is inserted into the second sliding groove 12. The second sliding shaft 34 can slide along the guiding direction of the second sliding groove 12.

[0058] In this technical solution, by setting a guide rail 11 on the inner surface of the housing, the second sliding shaft 34 of the filter assembly 3 is inserted into the second sliding groove 12 and can slide along the guiding direction of the second sliding groove 12. This facilitates the installation of the baffle plate 31 and, when the filter assembly 3 is switched to the self-cleaning position, facilitates the movement of the baffle plate 31 and accurately moves it between the air inlet 1 and the two-component module 4. Preferably, the second sliding shaft 34 is located at the uppermost part of the baffle plate 31, which makes it easier for the second sliding shaft 34 to accurately guide the movement of the baffle plate 31. Here, the uppermost part refers to the side of the baffle plate 31 away from the filter component 32. Preferably, the second sliding groove 12 is connected to the first sliding groove 10. More sliding shafts can also be set on the filter assembly 3 between the second sliding shaft 34 and the first sliding shaft 33. These sliding shafts can be inserted into either the first sliding groove 10 or the second sliding groove 12. This not only ensures the installation stability of the filter assembly 3, but also ensures the stability of the filter assembly 3 during movement.

[0059] Specifically, the filter assembly 3 also has an initial working position. When the filter assembly 3 is in the initial working position, the filter element 32 is located between the air inlet and the two-phase module 4. The airflow entering from the air inlet 1 flows sequentially through the filter element 32, the two-phase module 4, the fan 5, and the air outlet 2. It also includes a first drive element 16 and a transmission element 17. The first drive element 16 drives the filter assembly 3 to switch between the working position and the self-cleaning position through the transmission element 17.

[0060] In this embodiment, when the dehumidifier is running in dehumidification mode, the filter assembly 3 is in the initial working position. The filter assembly 3 is driven to switch between the initial working position and the self-cleaning position by using a first drive component 16 and a transmission component 17, which makes the selection of the first drive component 16 and the transmission component 17 diverse, and also makes the power source and transmission method of the filter assembly 3 when moving diverse.

[0061] In one specific implementation, the first drive component 16 has a rotatable output shaft, the transmission component 17 is connected to the output shaft, the transmission component 17 has a first tooth 18, the filter component 32 includes a frame and a filter screen mounted on the frame, the frame has a second tooth 35, the second tooth 35 meshes with the first tooth 18.

[0062] In this technical solution, the first driving component 16 can be a motor, and the transmission component 17 can be mounted on the output shaft of the motor. The transmission component 17 is equivalent to a sprocket, and the frame is equivalent to a chain. When the motor rotates, it drives the transmission component 17 to rotate. Under the meshing action of the first tooth 18 of the transmission component 17 and the second tooth 35 of the frame, the transmission component 17 drives the filter assembly 3 to move, thereby realizing the switching of the filter assembly 3 between the self-cleaning position and the initial working position. Since the filter assembly 32 will bend when entering the ventilation structure 7, this sprocket and chain transmission method makes it easier for the filter assembly 32 to enter and exit the ventilation structure 7. The filter assembly 32 can be integrally formed by injection molding of the frame and the filter screen to facilitate the bending of the filter assembly 32. Generally, the frame is made of PP material, and the filter screen is made of PET material.

[0063] Specifically, the ventilation area of ​​the exhaust vent 9 is smaller than that of the two-unit module 4. When the dehumidifier is running in self-cleaning mode, the filter component 3 switches from the self-cleaning position to the initial working position. The airflow entering from the air inlet 1 flows sequentially through the filter component 32, the air inlet 8 of the ventilation structure 7, the exhaust vent 9, the dust collection box 6, the fan 5, and the air outlet 2. Since the ventilation area of ​​the exhaust vent 9 is smaller than that of the two-unit module 4, the dehumidifier has a faster airflow in self-cleaning mode compared to dehumidification mode. The faster airflow is more conducive to dust removal.

[0064] See also Figure 2 and Figure 4 As shown, a damper 13 is provided at the exhaust vent 9, which is used to open or close the exhaust vent 9.

[0065] In this technical solution, when the dehumidifier is operating in dehumidification mode, by setting the damper 13 and closing the exhaust vent 9, the airflow will not be diverted at the ventilation structure 7, but will instead flow entirely through the heat exchange module 4, thus ensuring the heat exchange efficiency of the heat exchange module 4. When the dehumidifier is operating in self-cleaning mode, it is only necessary to open the exhaust vent 9 by setting the damper 13. The second drive component 23 is used to drive the damper 13 to open or close.

[0066] See also Figure 16 and Figure 17 As shown, the dust collection box 6 has an inlet 14 and multiple air passages 15. The inlet 14 faces the exhaust port 9, and each air passage 15 is located between the inlet 14 and the fan 5. The arrangement of the inlet 14 and each air passage 15 allows airflow to pass through the interior of the dust collection box 6, resulting in better airflow.

[0067] More specifically, the housing includes a front cover 19, a top cover 22, a chassis 24, and a rear cover 25. An air inlet 1 is constructed on the rear cover 25, and an air inlet grille 26 is provided at the air inlet 1. An air outlet 2 is constructed on the top cover 22. The chassis 24 is located below the bracket 20. The dehumidifier also includes a water tank 27. A hollow area is also constructed on the rear cover 25, which is located below the air inlet 1. The water tank 27 is installed in the hollow area.

[0068] The present invention also provides a control method for a dehumidifier, used to control the operation of the dehumidifier, the control method comprising:

[0069] The steps are to obtain the dehumidifier's running time T;

[0070] Determine the execution step based on T and T 设 The size relationship between them controls the switching of the filter component 3 between the initial working position and the self-cleaning position, and controls the opening or closing of the exhaust port 9 by the damper 13, wherein T 设 T is the preset running time value. 设 It can be 250 hours.

[0071] When T≥T 设 When the filter element 32 has accumulated a lot of dust, it indicates that the dehumidifier has been running for a long time and the dehumidifier's dehumidification performance and operational stability will be affected. The filter element 32 needs to be cleaned. The dehumidifier enters the self-cleaning mode, controls the filter element 3 to switch to the self-cleaning position, controls the damper 13 to open the exhaust port 9, and controls the fan 5 to start.

[0072] When T < T 设 When the time is short, it indicates that the dehumidifier has been running for a short time and does not need to be cleaned. The dehumidifier is still in dehumidification mode. Control the filter assembly 3 to switch to the initial working position, control the damper 13 to close the exhaust port 9, and control the fan 5 to start.

[0073] During the process of the filter assembly 3 switching from the initial working position to the self-cleaning position, the first drive component 16 is stopped after running for time t1 to ensure that the movement distance of the filter assembly 3 is just right, avoiding insufficient or excessive movement. Alternatively, a limit switch can be set at the end of the first slide rail 10. When the first sliding shaft 33 contacts the limit switch, the first drive component 16 stops, ensuring that the filter assembly 3 is accurately in the self-cleaning position. Next, the second drive component 23 is started, causing it to drive the damper 13 to open the exhaust port 9. It should be noted that the first drive component 16 and the second drive component 23 can also be started simultaneously, meaning that the filter assembly 3 switching to the self-cleaning position and the damper 13 opening the exhaust port 9 can occur at the same time.

[0074] After self-cleaning is completed, during the process of filter assembly 3 switching from the self-cleaning position to the initial working position, the first drive component 16 is stopped after running for time t3 to ensure that the movement distance of filter assembly 3 is just right, avoiding insufficient or excessive movement. Alternatively, a limit switch can be set at the end of the second slide rail 12. When the second sliding shaft 34 contacts the limit switch, the first drive component 16 stops, ensuring that filter assembly 3 is accurately in the initial working position. Next, the second drive component 23 is started, causing it to drive the damper 13 to close the exhaust port 9. It should be noted that the first drive component 16 and the second drive component 23 can also start simultaneously, meaning that the switching of filter assembly 3 to the initial working position and the closing of exhaust port 9 by damper 13 can occur at the same time.

[0075] Figure 18 The diagram shown is a control logic diagram of the dehumidifier control method according to an embodiment of the present invention. Figure 18 In the middle, the filter cleaning mode is the self-cleaning mode of the dehumidifier, motor 2 is the first drive component 16, motor 1 is the second drive component 23, and the baffle is the damper 13.

[0076] It will be readily understood by those skilled in the art that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0077] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention. The above are merely preferred embodiments of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the protection scope of the present invention.

Claims

1. A dehumidifier characterized by comprising: The device includes a housing with an air inlet (1) and an air outlet (2). Inside the housing are a filter assembly (3), a two-phase module (4), a fan (5), and a dust collection box (6). Along the airflow path from the air inlet (1) to the air outlet (2), the filter assembly (3), the two-phase module (4), and the fan (5) are arranged in sequence. The filter assembly (3) includes a baffle plate (31) and a filter component (32) connected to the baffle plate (31). A ventilation structure (7) is provided below the two-phase module (4). The ventilation structure (7) has a receiving cavity with an air inlet (8) and an air outlet (9). The air inlet (8) faces the side where the baffle plate (31) is located, and the air outlet (9) faces the side where the fan (5) is located. The dust collection box (6) is located between the air outlet (9) and the fan (5). The filter assembly (3) has a self-cleaning position. When the filter assembly (3) is in the self-cleaning position, the baffle plate (31) is located between the air inlet (1) and the two-component module (4) and forms a shield for the two-component module (4). The filter component (32) is located in the receiving cavity. The airflow entering from the air inlet (1) can flow through the filter component (32), dust collection box (6), fan (5), and air outlet (2) in sequence.

2. The dehumidifier according to claim 1, wherein The side wall of the receiving cavity is provided with a first sliding groove (10). The filter assembly (3) also includes a first sliding shaft (33). The first sliding shaft (33) is connected to the filter component (32). One end of the first sliding shaft (33) away from the filter component (32) is inserted into the first sliding groove (10). The first sliding shaft (33) can slide along the guiding direction of the first sliding groove (10).

3. The dehumidifier according to claim 2, characterized in that, The first chute (10) includes a first guide section, a turning section and a second guide section connected in sequence, with the first guide section opposite to the second guide section.

4. The dehumidifier according to claim 1, characterized in that, A guide rail (11) is provided on the inner surface of the housing. The guide rail (11) is located between the air inlet (1) and the two-component module (4). A second sliding groove (12) is constructed on the guide rail (11). The filter assembly (3) also includes a second sliding shaft (34). The second sliding shaft (34) is connected to the baffle plate (31). One end of the second sliding shaft (34) away from the baffle plate (31) is inserted into the second sliding groove (12). The second sliding shaft (34) can slide along the guiding direction of the second sliding groove (12).

5. The dehumidifier according to claim 1, characterized in that, The ventilation area of ​​the exhaust vent (9) is smaller than the ventilation area of ​​the two-device module (4).

6. The dehumidifier according to claim 1, characterized in that, A damper (13) is provided at the exhaust vent (9), and the damper (13) is used to open or close the exhaust vent (9).

7. The dehumidifier according to claim 1, characterized in that, The dust collection box (6) has an inlet (14) and an air passage (15), the inlet (14) facing the exhaust port (9), and the air passage (15) being located between the inlet (14) and the fan (5).

8. The dehumidifier according to any one of claims 1 to 7, characterized in that, The filter assembly (3) also has an initial working position. When the filter assembly (3) is in the initial working position, the filter element (32) is located between the air inlet and the two-phase module (4). The airflow entering from the air inlet (1) flows sequentially through the filter element (32), the two-phase module (4), the fan (5), and the air outlet (2). It also includes a first drive element (16) and a transmission element (17). The first drive element (16) drives the filter assembly (3) to switch between the initial working position and the self-cleaning position through the transmission element (17).

9. The dehumidifier according to claim 8, characterized in that, The first drive component (16) has a rotatable output shaft, the transmission component (17) is connected to the output shaft, the transmission component (17) has a first tooth (18), the filter component (32) includes a frame and a filter screen mounted on the frame, the frame has a second tooth (35), the second tooth (35) meshes with the first tooth (18).

10. A control method for a dehumidifier, characterized in that, For controlling the operation of the dehumidifier according to claim 8, a damper (13) is provided at the exhaust port (9), the damper (13) is used to open or close the exhaust port (9), and the control method includes: The step involves obtaining the operating time T of the dehumidifier. a judging execution step of controlling switching of the filtering assembly (3) between the initial working position and the self-cleaning position and controlling opening or closing of the air outlet (9) by the air door (13) according to a size relation between T and T 设 , wherein T 设 is a preset value of running time.

11. The control method according to claim 10, characterized in that, When T≥T 设 the filter assembly (3) is controlled to switch to the self-cleaning position, and the damper (13) is controlled to open the exhaust port (9); or, When T < T 设 the filter assembly (3) is controlled to switch to the initial operating position, and the damper (13) is controlled to close the exhaust air outlet (9).

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