Clothes dryer control method and clothes dryer

Abstract

The invention discloses a clothes dryer control method and a clothes dryer, the clothes dryer comprises a main drying air path and an auxiliary drying air path which are respectively communicated with a clothes drying cylinder, the auxiliary drying air path feeds air into the bottom of the clothes drying cylinder, the control method comprises the following steps: in a clothes drying process, obtaining the humidity d of clothes in the clothes drying cylinder, whether the clothes humidity d is smaller than or equal to the preset humidity d1 or not is judged, when the clothes humidity d is smaller than or equal to the preset humidity d1, an auxiliary drying air path is controlled to be opened, and air enters the barrel bottom in the clothes drying barrel. When the humidity of the clothes is small in the later drying period, the auxiliary drying air path is controlled to supply air into the bottom of the clothes drying cylinder, the clothes in the bottom are blown away, the clothes are more fluffy and stretched, drying is more uniform, the drying speed is increased, the clothes dryer is more efficient in drying, and the user experience is improved.

Description

Technical Field

[0001] The present invention belongs to the field of clothes dryers, and in particular, relates to a clothes dryer control method and a clothes dryer. Background Art

[0002] The existing clothes dryer is a device for drying clothes, which brings great convenience to people's lives and enables people to get dry clothes even on rainy days, especially in the rainy weather in the south.

[0003] At present, clothes dryers on the market generally include a housing, a front support, a clothes drying drum and a drying air duct. The clothes drying drum is arranged in the housing, and the front support is arranged at the front of the wall. The rear end of the clothes drying drum is rotatably supported on the housing, and the front end of the clothes drying drum is an open end, which is rotatably supported on the support wheel; the air outlet of the drying air duct is connected with the upper part of the rear end of the clothes drying drum, and the heated dry air is introduced into the clothes drying drum to dry the clothes, and the high-temperature and high-humidity air is obtained. The air is connected with the air inlet of the drying air duct through the opening on the front support, and the high-temperature and high-humidity air is introduced into the drying air duct for dehumidification and then heated to obtain high-temperature dry air, which is then introduced into the clothes drying drum to dry the clothes.

[0004] There are many methods for controlling the drying of clothes, but they are mainly based on the humidity sensor or temperature sensor installed on the dryer to determine the drying condition of the clothes in the dryer drum, and to determine the end time of the drying program. The problem with this method is that when drying clothes, there are special situations where the drying is uneven or part of the clothes are not dried, and there are wrinkles and creases on the clothes, which leads to poor drying effect, especially the problem of low drying efficiency in the later stage of drying. Although the rotation of the dryer drum can improve the ventilation effect of the clothes, it is also easy to cause the clothes to entangle and make it difficult for the inside to dry thoroughly. Often, the clothes dried in the dryer need to be ironed by the user, which increases the workload of the user's post-processing.

[0005] In view of this, the present invention is proposed. Summary of the invention

[0006] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art, and the purpose is to provide a control method for a washing and drying machine. When the humidity is low in the later stage of drying, the auxiliary drying air duct is controlled to supply air to the bottom of the drying drum, so as to blow away the clothes in the bottom, make the clothes more fluffy and stretched, make the drying more uniform, increase the drying speed, make the drying of the dryer more efficient, and improve the user experience.

[0007] Another object of the present invention is to provide a clothes dryer.

[0008] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is: to provide a control method for a clothes dryer, the clothes dryer comprises a main drying air path and an auxiliary drying air path respectively connected to a clothes drying drum, the auxiliary drying air path intakes air to the bottom of the clothes drying drum, the control method comprises

[0009] During the drying process, the humidity d of the clothes in the drying drum is obtained to determine whether the humidity d of the clothes is less than or equal to the preset humidity d1. When the humidity d of the clothes is less than or equal to the preset humidity d1, the auxiliary drying air path is controlled to open to let air flow into the bottom of the drying drum.

[0010] Furthermore, when the humidity d of the clothes is less than or equal to the preset humidity d1, the main drying air path is controlled to be closed, and the auxiliary drying air path is opened to let air into the bottom of the drying drum.

[0011] Furthermore, when the clothes humidity d is greater than the preset humidity d1, the main drying air path is controlled to be opened, and then the clothes humidity in the drying drum is re-obtained for judgment;

[0012] Preferably, when the humidity d of the clothes is greater than the preset humidity d1, the main drying air path is controlled to be opened and the auxiliary drying air path is controlled to be closed.

[0013] Furthermore, the main drying air duct and the auxiliary drying air duct share a part of the air duct, and a main fan capable of forward and reverse air supply is provided in the shared part of the air duct;

[0014] When the humidity d of the clothes is less than or equal to the preset humidity d1, the main fan is controlled to reverse to open the auxiliary drying air duct to supply air; when the humidity of the clothes is greater than the preset humidity d1, the main fan is controlled to rotate forward to open the main drying air duct to supply air.

[0015] Furthermore, an auxiliary fan is provided in the air outlet end of the auxiliary drying air passage, which controls the auxiliary drying air passage to discharge air from the rear side of the front support supporting the opening of the drying drum, and blows air backward along the bottom wall of the inner peripheral wall of the drying drum;

[0016] During the drying process of the auxiliary drying air path, it is determined in which preset humidity range of multiple preset humidity ranges the humidity d of the clothes in the drying drum is located, and the corresponding preset speed is obtained according to the determined preset humidity range to control the operation of the auxiliary fan.

[0017] Furthermore, during the drying process of the auxiliary drying air duct, the higher the preset humidity range, the higher the preset speed of the corresponding auxiliary fan;

[0018] Preferably, the multiple preset humidity ranges are greater than 0 and less than or equal to the preset humidity d1, and include at least 4 successively increasing preset humidity ranges, corresponding to at least 4 gradually increasing auxiliary fan motor frequencies f1-f4.

[0019] Furthermore, during the drying process of the auxiliary drying air duct, the rotation speed of the auxiliary fan is controlled and adjusted by controlling the motor frequency of the auxiliary fan.

[0020] The present invention also provides a clothes dryer, which adopts any one of the above-mentioned clothes dryer control methods.

[0021] Furthermore, it also includes

[0022] Drying tube;

[0023] A main drying air passage, one end of which is connected to the first air outlet at the front side of the drying drum, and the other end of which is connected to the first air inlet at the rear end of the drying drum;

[0024] The auxiliary drying air passage has one end connected to the second air outlet at the rear end of the drying drum, and the other end connected to the second air inlet at the bottom front side of the drying drum.

[0025] Furthermore, it also includes

[0026] A front support is arranged at the front side of the tube opening of the clothes drying tube, and is used for dynamic sealing and supporting the rotatable tube opening. The front support has a clothes throwing opening, and is arranged in communication with the tube opening;

[0027] A connecting air duct is arranged outside the clothes drying drum, one end of which is connected to the rear end of the clothes drying drum;

[0028] A main air duct section is arranged in the front support, one end of which is connected with the other end of the connecting air duct to form a main drying air duct, and the other end of which is connected with a first air outlet penetrating the inner wall of the clothes throwing opening;

[0029] An auxiliary air duct section is arranged in the front support, one end of which is connected with the other end of the connecting air duct to form an auxiliary drying air duct, and the other end of which is connected with a second air inlet that passes through the rear side wall of the bottom of the front support, and the second air inlet is arranged near the bottom wall of the inner peripheral wall of the drying drum;

[0030] A main fan, which can rotate forward and reversely, is arranged in the connecting air duct;

[0031] an auxiliary fan, arranged in the auxiliary air duct section, for supplying air to the second air inlet;

[0032] Preferably, the clothes dryer is a heat pump clothes dryer, and the connecting air duct is provided with a connected heat pump system for heating the air in the connecting air duct after dehumidification when the main fan rotates forward;

[0033] More preferably, the rear side of the front support has a detachable baffle plate, and the baffle plate is provided with a plurality of air holes connected to the auxiliary air duct section.

[0034] After adopting the above technical scheme, the present invention has the following beneficial effects compared with the prior art.

[0035] During the drying process of the present invention, when the humidity d of the clothes in the drying drum is less than or equal to the preset humidity d1, the humidity of the clothes is relatively low. In some cases, the clothes are in the late stage of drying. The auxiliary drying air path is controlled to supply air to the bottom of the drying drum to blow away the clothes in the bottom of the drying drum, making the clothes more fluffy and stretched, avoiding wrinkles, creases or entanglement of the clothes, making the clothes dry more evenly, increasing the drying speed, making the dryer drying more efficient, and improving the user experience.

[0036] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the accompanying drawings:

[0038] Figure 1 is a flow chart of a clothes dryer control method of the present invention;

[0039] Figure 2 is a flow chart of another method for controlling a clothes dryer according to the present invention;

[0040] Figure 3 is a detailed flow chart of a clothes dryer control method of the present invention;

[0041] Figure 4 is a specific flow chart of a clothes dryer control method of the present invention;

[0042] Figure 5 It is a schematic diagram of a front support of the present invention.

[0043] In the figure: 1. front support; 11. clothes-feeding opening; 12. first air outlet; 13. second air inlet; 14. baffle; 2. main air duct section; 3. auxiliary air duct section.

[0044] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0046] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0047] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] like Figures 1 to 4 As shown, the present invention provides a clothes dryer control method, which can improve the drying effect and the drying efficiency.

[0049] The clothes dryer comprises a main drying air path and an auxiliary drying air path respectively connected to the clothes drying drum, and the auxiliary drying air path takes air into the bottom of the clothes drying drum. The clothes dryer has a main drying program for drying clothes using the main drying air path and an auxiliary drying program for drying clothes using the auxiliary drying air path.

[0050] The control method includes: during the drying process, obtaining the humidity d of the clothes in the drying drum, then judging whether the obtained humidity d of the clothes is less than or equal to the preset humidity d1, and using the auxiliary drying air path to blow air into the bottom of the drying drum for drying.

[0051] During the drying process of the present invention, when the humidity d of the clothes in the drying drum is less than or equal to the preset humidity d1, the humidity of the clothes is relatively low. In some cases, the clothes are in the late stage of drying. The auxiliary drying air path is controlled to supply air to the bottom of the drying drum to blow away the clothes in the bottom of the drying drum, making the clothes more fluffy and stretched, avoiding wrinkles, creases or entanglement of the clothes, making the clothes dry more evenly, increasing the drying speed, making the dryer drying more efficient, and improving the user experience.

[0052] During the process of starting the auxiliary drying program, the main drying program may also be started or closed.

[0053] like Figures 2 to 4 As shown, the clothes dryer control method comprises the following steps:

[0054] S1, start drying clothes;

[0055] S2, detecting the humidity d of the clothes in the drying drum;

[0056] S3, determining whether the clothing humidity d is less than or equal to the preset humidity d1, if so, executing step S4; if not, executing step S5;

[0057] S4, start the main drying program, and use the main drying air duct for drying;

[0058] S5, start the auxiliary drying program and use the auxiliary drying air duct for drying.

[0059] In step S5, the main drying air passage is controlled to be closed, and the auxiliary drying air passage is opened to allow air to flow into the bottom of the drying drum.

[0060] In step S4, the main drying air duct is controlled to be opened and the auxiliary drying air duct is controlled to be closed.

[0061] When the clothing humidity d is less than or equal to the preset humidity d1, it means that the clothing humidity is low at this time, and the drying effect mainly inside the clothing at the bottom of the drum is not good. A better drying effect can be achieved by using the auxiliary drying air duct. At this time, closing the main drying air duct can reduce noise and save energy.

[0062] When the humidity d of the clothes is greater than the preset humidity d1, it means that the humidity of the clothes is high and a large air volume is required for drying. The main drying air duct can be used to achieve basic dehumidification of the clothes. The auxiliary drying program has little effect at this time. Turning off the auxiliary drying air duct can reduce energy consumption and noise.

[0063] More preferably, the main drying air passage and the auxiliary drying air passage share part of the dehumidification and heating device. By closing the main drying air passage when opening the auxiliary drying air passage, and closing the auxiliary drying air passage when opening the main drying air passage, both the drying effect and the simultaneous operation can be achieved. The main drying air passage and the auxiliary drying air passage share part of the pipelines and the dehumidification and heating device, thereby reducing the cost. Only minor changes need to be made to the dryer and coordinated with the control method to obtain better drying effect and lower manufacturing and drying costs.

[0064] Furthermore, the main drying air duct and the auxiliary drying air duct share a part of the air duct, and a main fan capable of forward and reverse air supply is arranged in the shared part of the air duct.

[0065] When the humidity d of the clothes is less than or equal to the preset humidity d1, in the step S5, the main fan is controlled to reverse to start the auxiliary drying air duct to supply air; when the humidity of the clothes is greater than the preset humidity d1, in the step S4, the main fan is controlled to rotate forward to start the main drying air duct to supply air.

[0066] The main fan in the existing dryer air path has a reversing function to prevent entanglement. The main fan in the present invention is reversed to achieve exhaust, which is conducive to the faster circulation of the air in the auxiliary drying air path. It has a simple structure, low cost, convenient control and operation, and good effect.

[0067] like Figure 3 to Figure 4 As shown, an auxiliary fan is provided in the air outlet end of the auxiliary drying air path, which controls the auxiliary drying air path to discharge air from the rear side of the front support of the dryer drum mouth supported by the front side of the dryer drum, and blows air backwards along the bottom wall of the inner peripheral wall of the dryer drum to blow and dry the clothes at the bottom of the dryer drum.

[0068] The main drying air path is controlled to supply air from the rear end of the drying drum into the drying drum, and to receive high-temperature and high-humidity air after drying the clothes from the front side of the drying drum.

[0069] Preferably, the auxiliary drying air path discharges air from the rear side of the front support supporting the opening of the drying drum and takes air into the drying drum. The main drying air path is controlled to supply air into the drying drum from the upper rear end of the drying drum, and the main drying air path is controlled to receive high-temperature and high-humidity air from the inner peripheral wall of the front support.

[0070] The front support is provided with a clothes throwing opening, which is arranged opposite to the tube opening. A support wheel is provided on the rear side wall of the front support at the outer periphery of the clothes throwing opening, and the front end of the drying tube is rotatably supported on the support wheel and dynamically sealed with the front support.

[0071] The present invention utilizes the front support structure of the clothes drying drum, and independently arranges part of the main drying air path and part of the auxiliary drying air path in the front support, thereby fully utilizing the front support structure.

[0072] In step S5, after the auxiliary drying process is started, the following steps are also included:

[0073] S51, determining in which preset humidity range of multiple preset humidity ranges the humidity d of the clothes in the drying drum is located;

[0074] S52, obtaining a corresponding preset rotation speed according to the determined preset humidity range;

[0075] S53: Control the operation of the auxiliary fan according to the obtained preset speed.

[0076] During the drying process of the auxiliary drying program, the higher the preset humidity range, the higher the preset speed of the corresponding auxiliary fan.

[0077] The present invention automatically adjusts the rotation speed of the auxiliary fan in the auxiliary drying air path in the front support according to the humidity of the clothes in the auxiliary drying program. The higher the humidity, the faster the rotation speed of the auxiliary fan, thereby further improving the drying effect and drying efficiency and reducing the cost.

[0078] During the drying process of the auxiliary drying air duct, the rotation speed of the auxiliary fan is controlled and adjusted by controlling the motor frequency of the auxiliary fan.

[0079] The humidity d of the clothes in the dryer is detected by a humidity sensor, and the humidity d of the clothes is fed back to the control module. The preset humidity range corresponding to the humidity d of the clothes is obtained, and converted into the corresponding frequency signal of the auxiliary variable frequency fan. The motor frequency of the auxiliary variable frequency fan is controlled to achieve the purpose of adjusting the speed of the auxiliary fan, thereby realizing automatic adjustment of the air volume. The higher the humidity of the clothes, the higher the frequency of the corresponding variable frequency fan.

[0080] Preferably, after the dryer starts to operate, the humidity d of the clothes in the dryer drum is re-detected every T1 minutes.

[0081] Multiple preset humidity ranges are greater than 0 and less than or equal to the preset humidity d1, including at least 4 preset humidity ranges with increasing numerical ranges, corresponding to at least 4 gradually increasing auxiliary fan motor frequencies f1-f4, which can finely control the auxiliary fan speed to further improve the drying effect and efficiency

[0082] Preferably, the clothes dryer comprises four preset humidity ranges with increasing numerical ranges, (0, a], (a, b], (b, c], (c, d1]. Where 0<a<b<c<d1.

[0083] In the above S51, it can be first determined that 0<d≤preset humidity a, if so, then the corresponding auxiliary motor frequency f1 is obtained, if not, then

[0084] Then determine the preset humidity a<d≤preset humidity b, if yes, then obtain the corresponding auxiliary motor frequency f2; if no, then

[0085] Then determine the preset humidity b<d≤preset humidity c, if so, obtain the corresponding auxiliary motor frequency f3; if not, finally

[0086] Then determine whether the preset humidity c<d≤preset humidity d1, and if so, obtain the corresponding auxiliary motor frequency f4.

[0087] Furthermore, after step S4 and step S5, the following steps are also included:

[0088] S6, obtaining whether the drying completion condition is met, if so, the drying ends; if not, executing step S2.

[0089] like Figure 4 As shown, in the step S6, the following steps are included:

[0090] S61, obtaining drying time t;

[0091] S62, determine whether the drying time t is greater than or equal to the preset time T2, if so, the drying completion condition is met and the drying ends; if not, the drying completion condition is not met, and step S2 is executed. In step S6, other preset conditions can also be used to determine whether the drying is completed, such as clothing humidity.

[0092] Further, in step S6, if no, the drying completion condition is not met, the following steps are performed:

[0093] S7, obtaining drying time t;

[0094] S8, judging whether the drying time t is greater than or equal to the preset time T1, that is, whether T1≤t<T2 is satisfied, if yes, then executing step S2; if no, that is, t<T1, then executing step S6, wherein T1<T2.

[0095] The present invention re-detects the humidity d of the clothes every preset time T1, realizes automatic matching of the operation of the main drying program and the auxiliary drying program, and the clothes drying efficiency is higher.

[0096] During the general drying process, the humidity d of the clothes will gradually decrease. When the dryer enters the auxiliary drying program, the dryer will automatically match the motor frequency of the auxiliary fan according to the gradual decrease in the humidity d of the clothes, and gradually reduce the speed of the auxiliary fan until the drying program is completed.

[0097] It is also possible to first determine whether the preset time T1 is reached, and then determine whether the drying completion condition is met. If both conditions are met, step S2 is executed.

[0098] like Figure 5 As shown, the present invention also provides a clothes dryer, which adopts any of the above-mentioned clothes dryer control methods.

[0099] The clothes dryer further comprises a clothes drying drum, a main drying air duct and an auxiliary drying air duct.

[0100] One end of the main drying air path is connected to the first air outlet 12 at the front side of the drying drum, and is used to introduce the air in the drying drum into the main drying air path. The other end of the main drying air path is connected to the first air inlet at the rear end of the drying drum, and is used to introduce hot air into the drying drum. One end of the auxiliary drying air path is connected to the second air outlet at the rear end of the drying drum, and is used to introduce the air in the drum into the auxiliary drying air path, and the other end is connected to the second air inlet 13 at the bottom of the front side of the drying drum, and is used to introduce air into the drying drum.

[0101] The clothes dryer further comprises a front support 1, a main fan and an auxiliary fan.

[0102] The front support 1 is arranged at the front side of the tube opening of the clothes drying tube, and is used for dynamic sealing and supporting the rotatable tube opening. The front support 1 has a clothes throwing opening 11, which is arranged to communicate with the tube opening.

[0103] In one embodiment, the main drying air passage comprises a connecting air passage and a main air passage section 2, and the auxiliary drying air passage comprises a connecting air passage and an auxiliary air passage section 3. The main drying air passage and the auxiliary drying air passage share a connecting air passage.

[0104] The connecting air duct is arranged on the outer wall of the clothes drying drum, and one end of the connecting air duct is communicated with the rear end of the clothes drying drum.

[0105] The main air duct section 2 is arranged in the front support 1, one end of which is connected to the other end of the connecting air duct to form a main drying air path, and the other end is connected to the first air outlet 12 that passes through the inner wall of the clothing outlet 11.

[0106] A lint filter is installed in the first air outlet 12 to filter lint in the clothes drying drum or the drying air duct.

[0107] The auxiliary air duct section 3 is arranged in the front support 1, one end of which is connected to the other end of the connecting air duct to form an auxiliary drying air path, and the other end is connected to the second air outlet 13 on the rear side wall that passes through the bottom of the front support 1, and the second air outlet 13 is arranged close to the bottom wall of the inner peripheral wall of the drying drum.

[0108] The first air inlet and the second air outlet are the same. The main fan is arranged in the connecting air duct in a forward and reverse rotation mode. When rotating forward, the main drying air duct works, one end of the connecting air duct is connected to the first air inlet, and air is introduced into the clothes drying drum; when rotating reversely, the auxiliary drying air duct works, one end of the connecting air duct is connected to the second air outlet, and air is introduced into the auxiliary drying air duct. The auxiliary fan is arranged in the auxiliary air duct section 3, and is used to supply air to the second air inlet 13.

[0109] The auxiliary drying air duct can utilize the waste heat in the clothes dryer to heat the air in the air duct, or an auxiliary heater can be provided in the auxiliary air duct section 3 to heat the air in the air duct.

[0110] In a specific solution, the rear side of the front support 1 has a detachable baffle 14 as the inner wall of the auxiliary air duct section 3. The baffle 14 is provided with a plurality of air holes, which are connected to the auxiliary air duct section 3 as the second air inlet 13. The air holes are circular, square, diamond-shaped, etc., and can be arranged at regular intervals or in irregular shapes.

[0111] The auxiliary fan and / or the auxiliary heater can be disassembled or repaired by removing the baffle 14, which has a simple structure and is easy to operate.

[0112] Preferably, the clothes dryer is a heat pump clothes dryer, and the connecting air duct is provided with a connected heat pump system for heating the air in the connecting air duct after dehumidification when the main fan rotates forward.

[0113] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content suggested above without departing from the scope of the technical solution of the present invention. The implementation scheme in the above embodiment can also be further combined or replaced. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of the solution of the present invention.

Claims

1. A clothes dryer control method, characterized in that: The clothes dryer comprises a main drying air path and an auxiliary drying air path respectively connected to the clothes drying drum, the auxiliary drying air path takes air into the bottom of the clothes drying drum, and the control method comprises During the drying process, the humidity d of the clothes in the drying drum is obtained to determine whether the humidity d of the clothes is less than or equal to the preset humidity d1. When the humidity d of the clothes is less than or equal to the preset humidity d1, the auxiliary drying air path is controlled to open to let air flow into the bottom of the drying drum.

2. A clothes dryer control method according to claim 1, characterized in that: When the humidity d of the clothes is less than or equal to the preset humidity d1, the main drying air path is controlled to be closed, and the auxiliary drying air path is opened to let air into the bottom of the drying drum.

3. A clothes dryer control method according to claim 2, characterized in that: When the clothes humidity d is greater than the preset humidity d1, the main drying air path is controlled to be turned on, and then the clothes humidity in the drying drum is re-obtained for judgment; Preferably, when the humidity d of the clothes is greater than the preset humidity d1, the main drying air path is controlled to be opened and the auxiliary drying air path is controlled to be closed.

4. A clothes dryer control method according to claim 3, characterized in that: The main drying air duct and the auxiliary drying air duct share part of the air duct, and the shared part of the air duct is equipped with a main fan that can deliver air in a forward and reverse direction; When the humidity d of the clothes is less than or equal to the preset humidity d1, the main fan is controlled to reverse to open the auxiliary drying air duct to supply air; when the humidity of the clothes is greater than the preset humidity d1, the main fan is controlled to rotate forward to open the main drying air duct to supply air.

5. A clothes dryer control method according to any one of claims 2 to 4, characterized in that: An auxiliary fan is provided in the air outlet end of the auxiliary drying air passage, which controls the auxiliary drying air passage to discharge air from the rear side of the front support supporting the opening of the clothes drying drum, and blows air backward along the bottom wall of the inner peripheral wall of the clothes drying drum; During the drying process of the auxiliary drying air path, it is determined in which preset humidity range of multiple preset humidity ranges the humidity d of the clothes in the drying drum is located, and the corresponding preset speed is obtained according to the determined preset humidity range to control the operation of the auxiliary fan.

6. A clothes dryer control method according to claim 5, characterized in that: During the drying process of the auxiliary drying air duct, the higher the preset humidity range, the higher the preset speed of the corresponding auxiliary fan; Preferably, the multiple preset humidity ranges are greater than 0 and less than or equal to the preset humidity d1, and include at least 4 successively increasing preset humidity ranges, corresponding to at least 4 gradually increasing auxiliary fan motor frequencies f1-f4.

7. A clothes dryer control method according to claim 6, characterized in that: During the drying process of the auxiliary drying air duct, the rotation speed of the auxiliary fan is controlled and adjusted by controlling the motor frequency of the auxiliary fan.

8. A clothes dryer, characterized in that: A clothes dryer control method according to any one of claims 1 to 7 is adopted.

9. A clothes dryer according to claim 8, characterized in that: Also includes Drying tube; A main drying air passage, one end of which is connected to the first air outlet at the front side of the drying drum, and the other end of which is connected to the first air inlet at the rear end of the drying drum; The auxiliary drying air passage has one end connected to the second air outlet at the rear end of the drying drum, and the other end connected to the second air inlet at the bottom front side of the drying drum.

10. The clothes dryer according to claim 8, characterized in that: Also includes A front support is arranged at the front side of the tube opening of the clothes drying tube, and is used for dynamic sealing and supporting the rotatable tube opening. The front support has a clothes throwing opening, and is arranged in communication with the tube opening; A connecting air duct is arranged outside the clothes drying drum, one end of which is connected to the rear end of the clothes drying drum; A main air duct section is arranged in the front support, one end of which is connected with the other end of the connecting air duct to form a main drying air duct, and the other end of which is connected with a first air outlet penetrating the inner wall of the clothes throwing opening; An auxiliary air duct section is arranged in the front support, one end of which is connected with the other end of the connecting air duct to form an auxiliary drying air duct, and the other end of which is connected with a second air inlet that passes through the rear side wall of the bottom of the front support, and the second air inlet is arranged near the bottom wall of the inner peripheral wall of the drying drum; A main fan, which can rotate forward and reversely, is arranged in the connecting air duct; an auxiliary fan, arranged in the auxiliary air duct section, for supplying air to the second air inlet; Preferably, the clothes dryer is a heat pump clothes dryer, and the connecting air duct is provided with a connected heat pump system for heating the air in the connecting air duct after dehumidification when the main fan rotates forward; More preferably, the rear side of the front support has a detachable baffle plate, and the baffle plate is provided with a plurality of air holes connected to the auxiliary air duct section.

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