Clothes dryer

Abstract

The invention discloses a clothes dryer, which comprises a box body; a door body; a door lock; the auxiliary door opening module comprises a power source; a decompression device; an air inlet of the pressure regulating device is communicated with an air outlet of the pressure reducing device, and the pressure regulating device outputs pilot pressure; a pressure channel; an air inlet of the relay valve is communicated with an air outlet of the power source, and an air outlet of the relay valve is communicated with an inlet of the pressure channel; the first air pressure sensor is used for detecting pilot pressure; the second air pressure sensor is used for detecting output pressure; the pressure regulating device comprises a first electromagnetic valve, a second electromagnetic valve and a controller, and the controller is configured to obtain a fuzzy output quantity u3 through fuzzy control logic according to the error e; obtaining an anti-fuzzy output quantity u2 according to the fuzzy output quantity u3 through an anti-fuzzy control logic; the power-on states of the first electromagnetic valve and the second electromagnetic valve are controlled according to the value of the anti-fuzzy output quantity u2, and pressure control of the pressure regulating device is achieved by controlling the first electromagnetic valve and the second electromagnetic valve.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and particularly relates to a dryer. Background Art

[0002] A dryer is a device for quickly drying wet clothes. The dryer includes a box body and a door body. A feeding port is provided on the box body, and the door body is used to open or close the feeding port. When the dryer is working, the door body must be kept closed to ensure that hot air does not leak out, so as to ensure the drying effect. After the dryer finishes working, the user needs to open the door to take out the clothes. Since the drying effect is ensured during drying, the door switch is generally relatively tight, and generally the user needs to use a relatively large pulling force to open it.

[0003] Currently, the door switch of a dryer usually adopts a mechanical or electronic switch. When the door switch is a mechanical switch, the user needs to apply a certain pulling force to pull the door switch device. When the door switch is an electronic switch, the electronic switch includes a sensor and a control circuit. When the user approaches the dryer, the sensor will detect the presence of the user and automatically open the door through mechanical transmission.

[0004] However, when the door switch is a mechanical switch, the user needs to have a certain arm strength. For special groups with poor arm strength, it is difficult to open the door body; moreover, since the pulling force needs to be estimated by oneself, too small or too large pulling force will bring discomfort, and the experience is not good for users who pursue a smooth experience.

[0005] When the door switch is an electronic switch, its control algorithm has a complex modeling process and the influence of items that cannot be accurately modeled such as friction.

[0006] Therefore, the present application proposes a dryer. Summary of the Invention

[0007] The present invention aims to solve at least one of the technical problems in the related art to some extent. For this reason,

[0008] According to an embodiment of the present disclosure, a dryer is provided, including:

[0009] A box body, including a feeding port provided on the front side of the box body;

[0010] A drying cylinder, provided in the box body;

[0011] A door body, connected to the box body and used to open or close the feeding port;

[0012] A door lock, connected to the box body, the door lock locks the door body to restrict the door body from opening the feeding port, or the door lock unlocks with the door body to enable the door body to open the feeding port;

[0013] An auxiliary door opening module, which is arranged inside the box and is used to apply an air thrust to the door body so that the door body is unlocked from the door lock; the auxiliary door opening module includes:

[0014] A power source for providing compressed air;

[0015] A pressure reducing device for reducing the pressure of the air flowing through the pressure reducing device, and an air inlet of the pressure reducing device is communicated with an air outlet of the power source;

[0016] A pressure regulating device for regulating the air pressure, an air inlet of the pressure regulating device is communicated with an air outlet of the pressure reducing device, and the pressure regulating device outputs a pilot pressure;

[0017] A pressure channel for transmitting air;

[0018] A relay valve, an air inlet of which is communicated with an air outlet of the power source and an air outlet of which is communicated with an inlet of the pressure channel; a pilot port of the relay valve is connected to the pressure regulating device;

[0019] A first air pressure sensor for detecting the pressure value of the air between the pilot port of the relay valve and the pressure regulating device and recording the detected pressure value as the pilot pressure;

[0020] A second air pressure sensor for detecting the pressure value of the air between the air outlet of the relay valve and the pressure channel and recording the detected pressure value as the output pressure;

[0021] The pressure regulating device includes:

[0022] A first solenoid valve, an inlet of which is connected to an outlet of the pressure reducing valve;

[0023] A second solenoid valve, an inlet of which is connected to an outlet of the first solenoid valve and a pilot port of the relay valve;

[0024] A controller, which is configured to:

[0025] Obtain an actual pressure value F2' through the pilot pressure or the output pressure;

[0026] Define the difference between the preset interaction force F2 and the actual pressure value F2' as an error e, and obtain a fuzzy output quantity u3 according to the error e through a fuzzy control logic;

[0027] Obtain an anti-fuzzy output quantity u2 according to the fuzzy output quantity u3 through an anti-fuzzy control logic;

[0028] Control the energization states of the first solenoid valve and the second solenoid valve according to the magnitude of the value of the anti-fuzzy output quantity u2, and control the pressure regulating device to increase pressure or maintain pressure or reduce pressure through the energization states of the first solenoid valve and the second solenoid valve.

[0029] This application uses a fuzzy control algorithm as the main control algorithm, avoiding the complex modeling process and the influence of items that cannot be accurately modeled such as friction, not relying on the accurate mathematical model of the controlled object, and simplifying the system complexity.

[0030] This application also provides a dryer, including:

[0031] A box body, including a feeding port provided on the front side of the box body;

[0032] A drying cylinder, provided inside the box body;

[0033] A door body, connected to the box body and used to open or close the feeding port;

[0034] A door lock, connected to the box body, which locks the door body to restrict the door body from opening the feeding port or unlocks the door body from the door lock to enable the door body to open the feeding port;

[0035] An auxiliary door opening module, provided inside the box body, for applying an air thrust to the door body to unlock the door body from the door lock; the auxiliary door opening module includes:

[0036] A power source, used to provide compressed air;

[0037] A pressure reducing device, used to reduce the pressure of the air flowing through the pressure reducing device, and the air inlet of the pressure reducing device is communicated with the air outlet of the power source;

[0038] A pressure regulating device, used to regulate the air pressure, the air inlet of the pressure regulating device is communicated with the air outlet of the pressure reducing device, and the pressure regulating device outputs a pilot pressure;

[0039] A pressure channel, used to transmit air;

[0040] A relay valve, whose air inlet is communicated with the air outlet of the power source and whose air outlet is communicated with the inlet of the pressure channel; the pilot port of the relay valve is connected to the pressure regulating device;

[0041] A first air pressure sensor, used to detect the pressure value of the air between the pilot port of the relay valve and the pressure regulating device and record the detected pressure value as the pilot pressure;

[0042] A second air pressure sensor, used to detect the pressure value of the air between the air outlet of the relay valve and the pressure channel and record the detected pressure value as the output pressure;

[0043] The pressure regulating device includes:

[0044] A first solenoid valve, whose inlet is connected to the outlet of the pressure reducing valve;

[0045] A second solenoid valve, whose inlet is connected to the outlet of the first solenoid valve and the pilot port of the relay valve;

[0046] A controller, configured to:

[0047] Obtain an actual pressure value F2’ through the pilot pressure or the output pressure;

[0048] Define the difference between the preset interaction force F2 and the actual pressure value F2’ as an error e, and obtain a fuzzy output quantity u3 through fuzzy control logic according to the error e;

[0049] Obtain a defuzzified output quantity u2 through defuzzification control logic according to the fuzzy output quantity u3;

[0050] Control the energization states of the first solenoid valve and the second solenoid valve according to the positive or negative value of the defuzzified output quantity u2, and control the pressure regulating device to increase pressure, maintain pressure, or reduce pressure through the energization states of the first solenoid valve and the second solenoid valve.

[0051] In some embodiments of the present application, define the basic domain of the error e as [-E, E], where E is the maximum boundary value of the error e, and obtain the domain of the input fuzzy subset through a first logical operation based on the maximum boundary value E of the error e and the error e.

[0052] In some embodiments of the present application, the domain of the input fuzzy subset is defined as an integer greater than or equal to -a and less than or equal to a;

[0053] Obtain the error fuzzy level corresponding to the error e according to the input fuzzy subset obtained from the error e.

[0054] In some embodiments of the present application, define the basic domain of the output quantity u as [-u1, u1], where u1 is the maximum boundary value of the output quantity u, and obtain the domain of the output fuzzy subset through a second logical operation based on the maximum boundary value u1 of the output quantity u and the output quantity u.

[0055] In some embodiments of the present application, the domain of the output fuzzy subset is defined as an integer greater than or equal to -b and less than or equal to b;

[0056] Obtain the output quantity fuzzy level corresponding to the output quantity u according to the fuzzy subset obtained from the output quantity u.

[0057] In some embodiments of the present application, the error fuzzy level obtains the output quantity fuzzy level corresponding to the error fuzzy level through a third logic.

[0058] In some embodiments of the present application, the membership degree relationship between the error fuzzy level and the domain of the input fuzzy subset, and the membership degree relationship between the output quantity fuzzy level and the domain of the output fuzzy subset are defined, and the fourth logic is used to obtain the fuzzy output quantity u3 corresponding to the error fuzzy level.

[0059] In some embodiments of the present application, an operation is performed based on the fuzzy output quantity u3 and the maximum boundary value u1 of the output quantity u to obtain the defuzzified output quantity u2. The energization states of the first solenoid valve and the second solenoid valve are controlled according to the size relationship between the defuzzified output quantity u2 and 0, and the pressure regulating device is controlled to increase pressure or maintain pressure or reduce pressure through the energization states of the first solenoid valve and the second solenoid valve.

[0060] In some embodiments of the present application, when the defuzzified output quantity u2 is greater than 0, the first solenoid valve and the second solenoid valve are energized, and the pressure regulating device increases pressure;

[0061] When the defuzzified output quantity u2 is equal to 0, the first solenoid valve is de-energized and the second solenoid valve is energized, and the pressure regulating device maintains pressure;

[0062] When the defuzzified output quantity u2 is less than 0, the first solenoid valve and the second solenoid valve are de-energized, and the pressure regulating device reduces pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0064] Figure 1 is the structural diagram of the auxiliary door opening module in the embodiment of the present invention;

[0065] Figure 2 is another structural diagram of the auxiliary door opening module in the embodiment of the present invention;

[0066] Figure 3 is another structural diagram of the auxiliary door opening module in the embodiment of the present invention;

[0067] Figure 4 is another structural diagram of the auxiliary door opening module in the embodiment of the present invention;

[0068] Figure 5 is the front view of the dryer in the embodiment of the present invention;

[0069] Figure 6 is another front view of the dryer in the embodiment of the present invention;

[0070] Figure 7 It is the schematic diagram of the door body opening in the embodiment of the present invention;

[0071] Figure 8 It is the schematic structural diagram of the clothes dryer in the embodiment of the present invention;

[0072] Figure 9 It is another schematic structural diagram of the clothes dryer in the embodiment of the present invention;

[0073] Figure 10 It is another schematic structural diagram of the clothes dryer in the embodiment of the present invention;

[0074] Figure 11 It is the membership function relationship diagram of the error fuzzy level and the domain of the input fuzzy subset of the auxiliary door opening module in the embodiment of the present invention;

[0075] Figure 12 It is the membership relationship table of the error fuzzy level and the domain of the input fuzzy subset of the auxiliary door opening module in the embodiment of the present invention;

[0076] Figure 13 It is the membership function relationship diagram of the output quantity fuzzy level and the domain of the output fuzzy subset of the auxiliary door opening module in the embodiment of the present invention;

[0077] Figure 14 It is the membership relationship table of the output quantity fuzzy level and the domain of the output fuzzy subset of the auxiliary door opening module in the embodiment of the present invention;

[0078] Figure 15 It is the relationship table between the error fuzzy level and the output quantity fuzzy level of the auxiliary door opening module in the embodiment of the present invention;

[0079] Figure 16 It is the flowchart of the auxiliary door opening module entering the fuzzy control logic in the embodiment of the present invention;

[0080] Figure 17 It is the flowchart of the fuzzy control logic of the auxiliary door opening module in the embodiment of the present invention.

[0081] In the following figures:

[0082] Clothes dryer 100; cabinet 1; drying air duct 11; front air duct 111; rear air duct 112; lower air duct 113; drying drum 12; air inlet 121; air outlet 122; front drum seal 123; rear drum seal 124; clothes receiving cavity 125; motor 126; belt 127; blower 13; evaporator 141; condenser 142; first water storage tank 15; second water storage tank 16; drain pump 17; first drain pipe 171; water container 18; water container tray 19; second drain pipe 191; auxiliary door opening module 4; power source 41; pressure reducing device 42; pressure regulating device 43; first solenoid valve 431; second solenoid valve 432; flow regulator 433; pressure channel 44; main pressure channel 441; auxiliary pressure channel 442; relay valve 45; pressure sensor 46; first air pressure sensor 471; second air pressure sensor 472; air path pressure control device 473; one-way air device 474; emergency exhaust device 475; standby gas source device 476; filtering device 477; door body 5; door handle 51. Detailed implementation manners

[0083] In order to make the objectives, technical solutions and advantages of the present application clearer and more understandable, the present application will be described and explained below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application. Based on the embodiments provided by the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present application.

[0084] Obviously, the accompanying drawings in the following description are only some examples or embodiments of the present application. For those of ordinary skill in the art, without making creative efforts, the present application can also be applied to other similar scenarios based on these drawings. In addition, it can also be understood that although the efforts made in this development process may be complex and lengthy, for those of ordinary skill in the art related to the content disclosed in the present application, some design, manufacturing or production changes based on the technical content disclosed in the present application are only conventional technical means and should not be understood as the content disclosed in the present application being insufficient.

[0085] Referring to "embodiments" in the present application means that specific features, structures or characteristics described in conjunction with the embodiments can be included in at least one embodiment of the present application. The phrase appears in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those of ordinary skill in the art explicitly and implicitly understand that the embodiments described in the present application can be combined with other embodiments without conflict.

[0086] The terms "connection", "connected", "coupled" and similar terms involved in this application do not limit to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The "plurality" involved in this application means two or more. The "and / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" may represent: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the front and rear associated objects. The terms "first", "second", "third", etc. involved in this application are only used to distinguish similar objects and do not represent a specific order for the objects.

[0087] In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this invention.

[0088] Refer to Figures 1 - 10 , the dryer 100 includes a cabinet 1. Among them, the direction from the bottom to the top of the cabinet 1 is the height direction of the cabinet.

[0089] Refer to Figures 5 - 6 and Figures 8 - 10 , the cabinet 1 forms the appearance of the dryer 100, and there is an accommodation space inside the cabinet 1. The accommodation space is used to accommodate and fix various components in the dryer 100 to ensure the structural stability of the dryer 100.

[0090] The cabinet 1 includes a feeding port (not shown). Among them, the feeding port is provided on the front side of the cabinet 1.

[0091] The dryer further includes a drying cylinder 12. The drying cylinder 12 is disposed inside the cabinet 1. Among them, the drying cylinder 12 is rotatably disposed inside the cabinet 1.

[0092] Specifically, the cabinet includes a placement space provided inside the cabinet. Among them, the drying cylinder is disposed inside the placement space.

[0093] The drying cylinder includes a drying port (not shown) provided at the side end of the drying cylinder. Among them, the drying port is provided on one side of the drying cylinder close to the feeding port, and the drying port is disposed opposite to the feeding port.

[0094] A clothing accommodation cavity is formed inside the drying cylinder 12. Among them, the clothing accommodation cavity is communicated with the drying port, and clothes can be placed in the clothing accommodation cavity through the feeding port and the drying port. The clothing accommodation cavity is used to accommodate the clothes to be dried to dry the clothes to be dried in the clothing accommodation cavity.

[0095] The dryer further includes a door body 5. The door body is connected to the cabinet body, and the door body is used to open or close the feeding port. The door body 5 is arranged on one side of the drying cylinder 12. By opening and closing the door body 5, clothes can be put in or taken out, so as to realize the putting in and taking out of the clothes in the clothes accommodating cavity.

[0096] The dryer further includes a door lock. The door lock is connected to the cabinet body. The door lock locks the door body to restrict the door body from opening the feeding port, or the door lock unlocks the door body to enable the door body to open the feeding port.

[0097] Currently, opening the door body of the dryer requires a certain amount of arm strength from the user. For special groups with poor arm strength, it is difficult to open the door body. Moreover, since the pulling force needs to be estimated by the user, too small or too large a pulling force will bring discomfort to the user, resulting in a poor experience for users who pursue a smooth experience. Or, the dryer often misjudges the user's intention to open the door, causing the door to open when it does not need to be opened.

[0098] Therefore, the dryer is further provided with an auxiliary door opening module 4. The auxiliary door opening module 4 is arranged in the cabinet body, and the auxiliary door opening module 4 is used to apply an air thrust to the door body to unlock the door body from the door lock.

[0099] Reference Figure 1 The auxiliary door opening module 4 includes a power source 41. The power source is used to provide compressed air.

[0100] Reference Figure 1 The auxiliary door opening module 4 further includes a pressure reducing device 42. The pressure reducing device 42 is used to reduce the pressure of the air flowing through the pressure reducing device. The air inlet of the pressure reducing device is communicated with the air outlet of the power source, so that the pressure reducing device can reduce the pressure of the air flowing out of the power source and output the decompressed air.

[0101] The auxiliary door opening module 4 further includes a pressure regulating device 43. The pressure regulating device 43 is used to regulate the air pressure. The air inlet of the pressure regulating device is communicated with the air outlet of the pressure reducing device, and the pressure regulating device outputs a pilot pressure.

[0102] Reference Figure 1 The maximum pressure of the pressure regulating device is regulated by the pressure reducing device 42.

[0103] Reference Figure 1 The auxiliary door opening module 4 further includes a pressure channel 44. The pressure channel 44 is used to transmit air.

[0104] Reference Figure 1, the auxiliary door opening module 4 further includes a relay valve 45. Among them, the air inlet of the relay valve 45 is communicated with the air outlet of the power source, and the air outlet of the relay valve 45 is communicated with the inlet of the pressure passage; the pilot port of the relay valve is connected to the pressure regulating device. The relay valve receives the pilot pressure output by the pressure regulating device, and the relay valve amplifies the flow rate according to the pilot pressure and outputs driving air into the pressure passage. The pressure of the driving air is the same as the pilot pressure.

[0105] When the door body is locked with the door lock, the outlet of the pressure passage faces the door body and applies force to the door body through the driving air to unlock the door body from the door lock.

[0106] It is provided that the dryer includes an auxiliary door opening module. The auxiliary door opening module includes a power source, a pressure reducing device, a pressure regulating device, a relay valve, and a pressure passage, and can generate air with a certain pressure to apply force to the door body to open the door body. The auxiliary door opening module can play an auxiliary role in opening the door, solve the problem that it is difficult to open the door body due to insufficient arm strength of the user, and the problem of unsmooth door opening caused by the user's inaccurate estimation of the opening pulling force. The air transmission has high smoothness, uniform and smooth output force, can extend the service life of the door lock, and can bring a smooth door opening experience to the user.

[0107] In some embodiments of the present application, the power source can be a pump body. Among them, the power source can be a small pump.

[0108] In some embodiments of the present application, the pressure reducing device is a pressure reducing valve.

[0109] In some embodiments of the present application, refer to Figures 5 - 6 , the auxiliary switch module further includes a pressure sensor 46. The pressure sensor 46 is arranged on the box body, and the pressure sensor 46 is used to detect the interaction force F0 between the door body and the box body.

[0110] The auxiliary switch module further includes a first air pressure sensor 471 and a second air pressure sensor 472.

[0111] Among them, the first air pressure sensor is used to detect the pressure value of the air between the pilot port of the relay valve and the pressure regulating device, and record the pressure value detected by the first air pressure sensor as the pilot pressure.

[0112] Among them, the second air pressure sensor 472 is used to detect the pressure value of the air between the air outlet of the relay valve and the pressure passage, and record the pressure value detected by the second air pressure sensor 472 as the output pressure.

[0113] Specifically, the flow path between the pilot port of the relay valve and the pressure regulating device is the pilot flow path; the flow path between the air outlet of the relay valve and the pressure passage is the output flow path.

[0114] Among them, the first air pressure sensor is used to detect the air pressure value in the pilot flow path; the second air pressure sensor is used to detect the air pressure value in the output flow path.

[0115] The dryer further includes a controller (not shown), and the controller is configured to:

[0116] Monitor the interaction force F0 between the door body and the box body;

[0117] When the interaction force F0 decreases and the interaction force F0 is less than the first preset interaction force, control the pressure regulating device to increase the pressure to increase the pilot pressure or control the pressure regulating device to maintain the pressure to keep the pilot pressure unchanged. The relay valve conveys air to the pressure channel to reduce the interaction force. When the interaction force decreases to 0, the door body and the door lock are unlocked.

[0118] By setting the monitoring of the interaction force F0 between the door body and the box body and when the interaction force F0 decreases and the interaction force F0 is less than the first preset interaction force, controlling the pressure regulating device to increase or maintain the pressure, the relay valve can generate air with a certain pressure to apply force to the door body, so that the door body can be opened; and by monitoring the interaction force F0 between the door body and the box body in this way to identify whether the user has an intention to open the door, and when the interaction force F0 decreases, it proves that the user has indeed made some actions on the door body, and when the interaction force F0 is less than the first preset interaction force, it proves that the user indeed has an intention to open the door. Therefore, when the interaction force F0 decreases and the interaction force F0 is less than the first preset interaction force, increasing or maintaining the pressure and the relay valve outputting air can avoid misjudging the user's intention to open the door and causing the door to open when it does not need to be opened, so as to improve the accuracy of judging the intention to open the door and improve the user experience.

[0119] It should be noted that the controller refers to a device that can generate operation control signals according to the instruction operation code and timing signals to instruct the dryer 100 to execute control instructions. Exemplarily, the controller can be a central processing unit (CPU), a general-purpose processor network processor (NP), a digital signal processor (DSP), a programmable logic device (PLD), a microprocessor, a microcontroller, or any combination thereof. The controller can also be other devices with processing functions, such as circuits, devices, or software modules. The embodiments of the present application do not make any restrictions on this.

[0120] In some embodiments of the present application, the controller is configured to:

[0121] After the interaction force F0 decreases and the interaction force F0 is less than the first preset interaction force, obtain the current pilot pressure of the air in the pilot flow path, and determine whether the current pilot pressure reaches the first pilot pressure P1. When the current pilot pressure does not reach the first pilot pressure P1, control the pressure regulating device to increase the pressure to increase the pilot pressure. When the current pilot pressure reaches the first pilot pressure P1, control the pressure regulating device to maintain the pressure so that the pilot pressure remains unchanged.

[0122] In some embodiments of the present application, the controller is configured to:

[0123] When the current pilot pressure does not reach the first pilot pressure P1, control the pressure regulating device to increase the pressure to increase the pilot pressure of the air in the pilot flow path, and stop increasing when the pilot pressure increases to the target pilot pressure P0.

[0124] The thrust required for the door body to open is F2, and the corresponding target pilot pressure is P0.

[0125] In some embodiments of the present application, when the interaction force decreases to 0, the pressure regulating device reduces the pressure, and the auxiliary door opening module no longer generates a thrust on the door body.

[0126] In some embodiments of the present application, refer to Figure 2 , the pressure regulating device includes a first solenoid valve 431 and a second solenoid valve 432.

[0127] The inlet of the first solenoid valve 431 is connected to the outlet of the pressure reducing valve.

[0128] The inlet of the second solenoid valve 432 is connected to the outlet of the first solenoid valve and the pilot port of the relay valve.

[0129] When the pressure regulating device increases the pressure, the first solenoid valve and the second solenoid valve are energized;

[0130] When the pressure regulating device maintains the pressure, the first solenoid valve is de-energized and the second solenoid valve is energized;

[0131] When the pressure regulating device reduces the pressure, the first solenoid valve and the second solenoid valve are de-energized.

[0132] Among them, the state in which the first solenoid valve and the second solenoid valve are de-energized is shown in the drawing.

[0133] By energizing and de-energizing the first solenoid valve to control the connection and disconnection of the first solenoid valve, and by energizing and de-energizing the second solenoid valve to control the disconnection and connection of the second solenoid valve.

[0134] Among them, when the first solenoid valve is energized, the first solenoid valve is connected; when the first solenoid valve is de-energized, the first solenoid valve is disconnected; when the second solenoid valve is de-energized, the second solenoid valve is connected; when the second solenoid valve is energized, the second solenoid valve is disconnected.

[0135] The outlet of the second solenoid valve is connected to other devices or is open-ended.

[0136] The first solenoid valve and the second solenoid valve are two-position three-way solenoid valves.

[0137] In some embodiments of the present application, referring to Figure 2 , the pressure regulating device further includes a flow regulator 433. Among them, the inlet of the flow regulator is connected to the pressure reducing device, and the flow regulator 433 is used to control the flow rate of the flow path between the pressure regulating device and the pilot port of the relay valve. Since the relay valve has the function of amplifying the flow rate, therefore, the regulation of the flow path between the pressure regulating device and the pilot port of the relay valve is for the regulation of the flow rate output by the relay valve.

[0138] Among them, the flow regulator 433 can be a throttle valve.

[0139] In some embodiments of the present application, referring to Figure 3 and Figure 4 , the auxiliary door opening module further includes a gas path pressure control device 473. The inlet of the gas path pressure control device 473 is connected to the air outlet of the power source, and the gas path pressure control device 473 is used to control the air pressure in the flow path between the air outlet of the power source and the pressure reducing device to be lower than its overflow air pressure.

[0140] The gas path pressure control device 473 is an overflow valve. Among them, the inlet of the overflow valve is connected to the air outlet of the power source, and the outlet of the overflow valve is connected to other devices or is open-ended.

[0141] In some embodiments of the present application, referring to Figure 3 and Figure 4 , the auxiliary door opening module further includes a one-way air device 474. The one-way air device 474 is used to prevent air from flowing back. The inlet of the one-way air device 474 is connected to the air outlet of the power source, and the outlet of the one-way air device 474 is connected to the pressure reducing device.

[0142] Among them, the one-way air device 474 is a one-way valve.

[0143] In some embodiments of the present application, referring to Figure 3 and Figure 4 , the auxiliary door opening module further includes an emergency exhaust device 475. The emergency exhaust device 475 is used to cut off the air flow path between the power source, the pressure reducing device and the relay valve.

[0144] In the case where the air path fails and continuously pushes the door body, the emergency exhaust device 475 can be used to cut off the air path and at the same time evacuate the air on the side of the emergency exhaust device 475 far from the power source.

[0145] Among them, the emergency exhaust device 475 can be a stop valve.

[0146] In some embodiments of the present application, referring to Figure 3 and Figure 4 , the auxiliary door opening module further includes a filtering device 477, which is connected to the air inlet of the pressure regulating device and the side of the air inlet of the relay valve close to the power source. The filtering device is used to filter impurities in the air to ensure the purity of the gas.

[0147] Among them, the filtering device can be a filter.

[0148] In some embodiments of the present application, referring to Figure 3 and Figure 4 , the auxiliary door opening module further includes a standby air source device 476. When the power source fails, the standby air source device can replace the power source pump for a period of time, improving the lasting use ability of the device and making up for the blank period before the after-sales service arrives.

[0149] The standby air source device 476 can be a gas storage tank with a certain volume.

[0150] In some embodiments of the present application, the pressure channel can be one-way. The inlet of the pressure barrel is connected to the air outlet of the relay valve, and the outlet of the pressure channel faces the door body when the door body closes the discharge port.

[0151] In some embodiments of the present application, referring to Figure 3 and Figure 4 , the pressure channel includes a main pressure channel 441, and the inlet of the main pressure channel 441 is connected to the air outlet of the relay valve.

[0152] The pressure channel further includes at least two auxiliary pressure channels 442. Among them, one end of the two auxiliary pressure channels is connected to the outlet of the main pressure channel at the same time, and the outlets of the two auxiliary pressure channels respectively correspond to different positions of the door body.

[0153] In some embodiments of the present application, referring to Figure 5 and Figure 6 , the door body includes a door handle 51, and a pressure sensor is arranged on one side of the door handle of the door body. When the door body closes the discharge port, the position of the outlet of the pressure channel corresponding to the door body is on one side of the door handle.

[0154] In some embodiments of the present application, the number of pressure sensors is the same as the number of auxiliary pressure channels. Among them, the pressure sensors and the auxiliary pressure channels are in one-to-one correspondence. That is, the pressure sensors are arranged on one side of the outlets of the auxiliary pressure channels, and the distance between each pressure sensor and the outlet of its corresponding auxiliary pressure channel is equal or the difference between adjacent distances is within a certain range, ensuring the stability of the values detected by the pressure sensors.

[0155] Among them, the interaction force is the interaction force corresponding to the average value of the values detected by the pressure sensors.

[0156] In some embodiments of the present application, the box body includes a feeding port provided on the front side of the box body; the door body is connected to the box body and is used to open or close the feeding port; the door lock connects the box body, and the door lock locks the door body to restrict the door body from opening the feeding port or unlocks the door lock from the door body to enable the door body to open the feeding port; the auxiliary door opening module is arranged inside the box body, and the auxiliary door opening module is used to apply an air thrust to the door body to unlock the door body from the door lock.

[0157] The auxiliary door opening module includes a power source, a pressure reducing device, a pressure regulating device, a pressure channel, a relay valve, a pressure sensor, a first air pressure sensor, and a second air pressure sensor; the power source is used to provide compressed air; the pressure reducing device is used to reduce the pressure of the air flowing through the pressure reducing device, and the air inlet of the pressure reducing device is communicated with the air outlet of the power source; the pressure regulating device is used to adjust the air pressure, the air inlet of the pressure regulating device is communicated with the air outlet of the pressure reducing device, and the pressure regulating device outputs a pilot pressure; the pressure channel is used to transmit air;

[0158] The air inlet of the relay valve is communicated with the air outlet of the power source and its air outlet is communicated with the inlet of the pressure channel; the pilot port of the relay valve is connected to the pressure regulating device.

[0159] The pressure sensor is arranged on the box body to detect the interaction force F0 between the door body and the box body;

[0160] The first air pressure sensor is used to detect the pressure value of the air between the pilot port of the relay valve and the pressure regulating device and record the detected pressure value as the pilot pressure;

[0161] The second air pressure sensor is used to detect the pressure value of the air between the air outlet of the relay valve and the pressure channel and record the detected pressure value as the output pressure;

[0162] The controller is configured to:

[0163] Monitor the interaction force F0 between the door body and the box body;

[0164] When the interaction force F0 decreases and the interaction force F0 is less than the first preset interaction force, control the pressure regulating device to increase the pressure or maintain the pressure, and the relay valve conveys air to the pressure channel to reduce the interaction force.

[0165] By setting the interaction force F0 between the monitoring door body and the box body, and when the interaction force F0 decreases and is less than the first preset interaction force, controlling the pressure regulating device to increase the pressure or maintain the pressure, so that the relay valve can generate air with a certain pressure to apply force to the door body and open the door body; and by monitoring the interaction force F0 between the door body and the box body to identify whether the user has an intention to open the door, and when the interaction force F0 decreases, it proves that the user does have some actions on the door body, and when the interaction force F0 is less than the first preset interaction force, it proves that the user does have an intention to open the door. Therefore, when the interaction force F0 decreases and is less than the first preset interaction force, increasing the pressure or maintaining the pressure and the relay valve outputting air can avoid misjudging the user's intention to open the door and causing the door to open when it does not need to be opened, so as to improve the accuracy of judging the intention to open the door and improve the user experience.

[0166] In some embodiments of the present application, the air outlet of the power source is connected to the air inlet of the air path pressure control device and the air inlet of the one-way air device, the air outlet of the one-way air device is connected to the air inlet of the air storage device, the air outlet of the air storage device is connected to the air inlet of the emergency exhaust device, the air outlet of the emergency exhaust device is connected to the air inlet of the filtering device, and the air outlet of the filtering device is connected to the air inlet of the pressure reducing device and the air inlet of the relay valve.

[0167] The power source compresses air into the main air circuit, and the air pressure in the main air circuit is set by the air path pressure control device. The air in the main air circuit is divided into two paths after passing through the filtering device and flows into the pressure reducing device and the relay valve respectively. The set pressure P2 of the pressure reducing device is used as the air duct pressure of the pressure regulating device, and the pilot pressure is output to the pilot port of the relay valve through the pressure regulating device to control the output air pressure of the relay valve to be consistent with the pilot pressure.

[0168] In some embodiments of the present application, after the pressure regulating device enters the pressure increasing state, when the air pressure value detected by the first air pressure sensor is quite different from the air pressure value detected by the second air pressure device, it is prompted that the relay valve is damaged and needs to be replaced or repaired in time.

[0169] In some embodiments of the present application, if the user continuously applies force during the entire door opening process, and during the pressure increasing process, when the detected interaction force F0 is 0, it means that the door has been opened.

[0170] If the user does not want to continuously apply force and just tells the dryer the intention to open the door, they can briefly apply force and then let go, and wait for the auxiliary door opening module to work to open the door body.

[0171] In some embodiments of the present application, refer to Figures 8 - 10, an air inlet 121 and an air outlet 122 are provided on the drying cylinder 12. Both the air inlet 121 and the air outlet 122 are communicated with the clothing accommodation cavity. During the drying process, the dryer 100 generates a drying air flow. The drying air flow enters the clothing accommodation cavity from the air inlet 121, takes away the moisture on the clothes, and is discharged from the air outlet 122. Reference Figure 1 , in this embodiment, the air inlet 121 and the air outlet 122 are respectively arranged on the left and right sides of the drying cylinder 12, and the rotation of the drying cylinder 12 is realized by a transmission mechanism composed of a motor and a belt.

[0172] Reference Figures 8 - 10 , an air duct plate is arranged in the box body 1. A drying air duct 11 is formed between the air duct plates. The drying air duct 11 is arranged between the box body 1 and the drying cylinder 12. Both ends of the drying air duct 11 are respectively communicated with the air inlet 121 and the air outlet 122 of the drying cylinder 12 to form a loop channel. A blower 13 is arranged in the drying air duct 11. The blower 13 is used to make the air in the drying air duct 11 flow in the direction from the air outlet 122 to the air inlet 121, so that the air in the clothing accommodation cavity enters the drying air duct 11 through the air outlet 122, and the air in the drying air duct 11 enters the clothing accommodation cavity through the air inlet 121, so as to realize the air circulation between the clothing accommodation cavity and the drying air duct 11. In this embodiment, the blower 13 is a centrifugal blower. The centrifugal blower is located on one side close to the air inlet 121 of the drying cylinder 12 and is driven by a motor. The drying cylinder 12 and the air duct plate are sealed by a front cylinder seal 123 and a rear cylinder seal 124.

[0173] In this embodiment, reference Figures 8 - 10 , the drying air duct 11 includes a front air duct 111 communicated with one side of the drying cylinder 12, a rear air duct 112 communicated with the other side of the drying cylinder 12, and a lower air duct 113. The front air duct 111 and the rear air duct 112 are communicated through the lower air duct 113. The drying air duct 11 is communicated with the clothing accommodation cavity to form a loop channel. Reference Figures 8 - 10 , wherein, the arrow direction is the air circulation direction in the loop channel.

[0174] Reference Figures 8 - 10 , a drying device is arranged in the drying air duct 11. The drying device is used to heat the dried air flow after condensation. The heated drying air flow is introduced into the clothing accommodation cavity from the air inlet 121. The drying device is also used to condense the high-temperature and high-humidity air flow discharged from the air outlet 122, so as to condense the moisture carried in the high-temperature and high-humidity air flow to form condensed water. In this way, the moisture of the clothes in the clothing accommodation cavity is taken away by the drying air flow, so that the moisture on the clothes is separated from the clothes, so as to realize the drying of the clothes.

[0175] Specifically, reference Figures 8 - 10, in this embodiment, the drying device is arranged in the lower air duct 113, and the drying device includes a condenser 142 and an evaporator 141. The condenser 142 is located on the side of the evaporator 141 close to the upper air inlet 121 of the drying cylinder 12. The condenser 142 is used to heat the air in the drying air duct 11 to form a high-temperature and dry drying air flow. After passing through the drying air duct 11, the drying air flow enters the drying cylinder 12, and then evaporates the moisture of the clothes to be dried in the drying cylinder 12 to form a high-temperature and high-humidity air flow. The high-temperature and high-humidity air flow led out from the drying cylinder 12 contains a lot of water vapor. After passing through the front air duct 111, it contacts the evaporator 141 with a low surface temperature in the lower air duct 113 to precipitate condensed water and become a low-temperature and low-humidity air flow. The low-temperature and low-humidity air flow is further heated by the condenser 142 to form a high-temperature and dry drying air flow.

[0176] Reference Figures 8 - 10 , the dryer 100 further includes a water storage tank for collecting the condensed water formed on the evaporator 141. In this embodiment, the water storage tank includes a first water storage tank 15 and a second water storage tank 16. The first water storage tank 15 is arranged in the lower air duct 113 and is located below the drying device. The second water storage tank 16 is arranged outside the drying air duct 11 and is connected to the first water storage tank 15, so that the condensed water collected in the first water storage tank 15 enters the second water storage tank 16. By dividing the water storage tank into two and arranging them on the inner and outer sides of the drying air duct 11 respectively, the volume of the water storage tank can be effectively increased, and thus the capacity of the water storage tank can be increased.

[0177] Reference Figures 8 - 10 , in order to drain the condensed water in the water storage tank, a drain pump 17 is arranged in the second water storage tank 16. The drain pump 17 is used to pump the water in the second water storage tank 16 into the water container 18 or to the outside of the cabinet 1.

[0178] Reference Figures 8 - 10 , a water container 18 is arranged at the top of the cabinet 1. An inlet is arranged at the top of the water container 18, and the inlet is connected to the drain pump 17 through a first drain pipe 171. In this embodiment, the first drain pipe 171 extends from the bottom of the cabinet 1 to the top of the cabinet 1 and is connected to the water container 18 through the inlet to realize draining the condensed water in the second water storage tank 16 into the water container 18.

[0179] Reference Figures 8 - 10, Further, a water container tray 19 is also provided at the top of the box body 1. A water container 18 is arranged in the water container tray 19, and the water container tray 19 is communicated with the water storage tank. Specifically, a water outlet is arranged at the bottom of the water container tray 19. The water outlet is correspondingly arranged with the second water storage tank 16. The water outlet is communicated with the first water storage tank 15 through a second drain pipe 191. By arranging the water outlet and the second drain pipe 191, the water container tray 19 is communicated with the second water storage tank 16. When the water in the water container overflows into the water container tray 19 due to excessive water volume, it will flow into the second water storage tank 16 through the second drain pipe 191 to relieve the water overflow situation of the water container.

[0180] In some embodiments of the present application, the dryer 100 may further include: a display, which may be a liquid crystal display or an organic light-emitting diode display. The specific type, size and resolution of the display are not limited. Those skilled in the art can understand that the display can be changed in terms of performance and configuration as needed.

[0181] The display can be used to display the control panel of the dryer 100 or the operation information of the dryer 100. The dryer displays the operation information such as the running duration of the dryer and the drying program being run through the display.

[0182] Among them, whether to open the door body of the dryer can be operated through the control panel. When it is necessary to open, the controller controls the power source to work, the pressure regulating device increases or maintains the pressure, and the relay valve outputs air with the pilot pressure and acts on the door body to open the door body.

[0183] In some embodiments of the present application, the dryer may further include: a voice prompt device, which is used to play voice prompt information according to the program. Among them, the content of the voice prompt information can be preset by the manufacturer of the dryer 100 or set by the user through the human-machine interaction device. Exemplarily, when the controller obtains that the clothes have met the drying end condition (when the dryer runs to the stop time), the controller can control the voice prompt device to play prompt information such as "drying completed".

[0184] The dryer may further include: a human-machine interaction device, which is used to realize the interaction between the user and the dryer. The human-machine interaction device may include one or more of physical buttons or a touch display panel. For example, the user can set the drying program that the dryer needs to run through the human-machine interaction device.

[0185] Among them, it can be indicated whether to open the door to the dryer in a human-machine interaction manner. When it is necessary to open the door, the auxiliary door opening module works.

[0186] Refer to Figures 16 - 17, in some embodiments of the present application, the controller is configured to: obtain the actual pressure value F2' through the pilot pressure or the output pressure.

[0187] Define the difference between the preset interaction force F2 and the actual pressure value F2' as the error e, and obtain the fuzzy output quantity u3 through the fuzzy control logic according to the error e. Obtain the defuzzified output quantity u2 through the defuzzification control logic according to the fuzzy output quantity u3;

[0188] Control the energization states of the first solenoid valve and the second solenoid valve according to the magnitude of the value of the defuzzified output quantity u2, and control the pressure regulating device to increase pressure or maintain pressure or reduce pressure through the energization states of the first solenoid valve and the second solenoid valve.

[0189] The present application adopts the fuzzy control algorithm as the main control algorithm, avoiding the complex modeling process and the influence of items such as friction that cannot be accurately modeled, not relying on the accurate mathematical model of the controlled object, and simplifying the complexity of the control system.

[0190] When the relay valve operates normally, the pilot pressure is equal to the output pressure. The pilot pressure detected by the first pneumatic sensor is the pressure in the pipeline between the pilot port of the relay valve and the pressure regulating device, and the output pressure detected by the second pneumatic sensor is the pressure in the pipeline between the air outlet of the relay valve and the pressure channel. Obtain the pressure in the corresponding pipeline according to the pressure and the cross-sectional area of the corresponding pipeline.

[0191] Since the pilot pressure is equal to the output pressure, calculate through the pilot pressure or the output pressure to obtain the actual pressure value F2'. The actual pressure value F2' is the force actually applied by the auxiliary door opening module to the door body.

[0192] Define the difference between the preset interaction force F2 and the actual pressure value F2' as the error e, and convert the analog signal into a digital signal through the analog-to-digital converter, that is, convert the error e into a digital signal recognizable by the controller.

[0193] The fuzzy control logic includes the step of changing the input precise error e into a fuzzy quantity.

[0194] Refer to Figures 11 - 12 , define the basic domain of the error e as [-E, E], where E is the maximum boundary value of the error e, and obtain the domain of the input fuzzy subset through the first logical operation according to the maximum boundary value E of the error e and the error e.

[0195] The first logic includes: y = (a / E)·e, and the final value of y is obtained by rounding, where y is the input fuzzy subset, and all the input fuzzy subsets constitute the domain of the input fuzzy subset.

[0196] Among them, the domain of the input fuzzy subset can be customized by the user.

[0197] The domain of the input fuzzy subset is defined as integers greater than or equal to -a and less than or equal to a. The error fuzzy level corresponding to the error e is obtained from the input fuzzy subset obtained according to the error e.

[0198] In this embodiment, the error fuzzy levels of the input quantity error e are described by the languages NB, NS, ZO, PS, and PB, where NB represents negative large, NS represents negative small, ZO represents zero, PS represents positive small, and PB represents positive large.

[0199] In some embodiments, referring to Figures 11 - 12 , the domain of the input fuzzy subset is defined as {-4, -3, -2, -1, 0, 1, 2, 3, 4}. That is, a = 4, and the basic domain of the error e is [-E, E]. The transformation from the basic domain [-E, E] to the fuzzy subset domain is performed using the first logic: y = (4 / E)·e, and the final value of y is obtained by rounding.

[0200] Referring to Figures 13 - 14 , the basic domain of the output quantity u is defined as [-u1, u1], where u1 is the maximum boundary value of the output quantity u. The domain of the output fuzzy subset is obtained through the second logical operation based on the maximum boundary value u1 of the output quantity u and the output quantity u.

[0201] The second logic includes: z = (b / u1)·u, and the final value of z is obtained by rounding, where z is the output fuzzy subset, and all the output fuzzy subsets constitute the domain of the output fuzzy subset.

[0202] Among them, the domain of the output fuzzy subset can be custom-set by the user.

[0203] The domain of the output fuzzy subset is defined as integers greater than or equal to -b and less than or equal to b. The output quantity fuzzy level corresponding to the output quantity u is obtained from the fuzzy subset obtained according to the output quantity u.

[0204] In this embodiment, the output quantity fuzzy levels of the output quantity u are described by the languages NB, NS, ZO, PS, and PB, where NB represents negative large, NS represents negative small, ZO represents zero, PS represents positive small, and PB represents positive large.

[0205] In some embodiments, referring to Figures 13 - 14 , the domain of the output fuzzy subset is defined as {-3, -2, -1, 0, 1, 2, 3}. That is, b = 3, and the basic domain of the output quantity u is [-u1, u1]. The transformation from the basic domain [-u1, u1] to the fuzzy subset domain is performed using the second logic: z = (3 / u1)·u, and the final value of z is obtained by rounding.

[0206] See Figure 15, the fuzzy inference includes a third logic and a fourth logic. The error fuzzy level is passed through the third logic to obtain the output quantity fuzzy level corresponding to the error fuzzy level. The third logic is Figure 15 the corresponding relationship in the table of

[0207] See Figures 11 - 16 , define the membership degree relationship between the error fuzzy level and the domain of the input fuzzy subset, and the membership degree relationship between the output quantity fuzzy level and the domain of the output fuzzy subset. Through the fourth logic, the fuzzy output quantity u3 corresponding to the error fuzzy level is obtained. The membership degree relationship can be obtained by using the triangular membership degree function.

[0208] The fourth logic includes: R = (NBe ∩ NBu) ∪ (NSe ∩ NSu) ∪ (Oe ∩ Ou) ∪ (PSe ∩ PSu) ∪ (PBe ∩ PBu)

[0209] Among them, ∩ represents taking the smaller value of the two numerical values. ∪ represents taking the larger value of the two numerical values. Through matrix operations, the following results are obtained.

[0210]

[0211]

[0212]

[0213]

[0214]

[0215] R = (NBe ∩ NBu) ∪ (NSe ∩ NSu) ∪ (Oe ∩ Ou) ∪ (PSe ∩ PSu) ∪ (PBe ∩ PBu) =

[0216]

[0217] See Figures 11 - 14 , when the error fuzzy level is PB, the corresponding vector is e = [0 0 0 0 0 0 0 0.51], then the fuzzy output quantity is equal to

[0218]

[0219] Since the obtained fuzzy output quantity u3 is a fuzzy quantity, this quantity cannot complete the control of the controlled object and must obtain the defuzzified output quantity u2 through the defuzzification control logic. In this embodiment, the centroid method is used to run the defuzzification control logic.

[0220] Using the centroid method, the intermediate value U is calculated according to the fuzzy output u3, and the fifth logical operation is performed based on the intermediate value U and the maximum boundary value u1 of the output u to obtain the defuzzified output u2.

[0221] When the error fuzzy level is PB, u3 = [0 0 0 0 0.5 0.5 1], and it is calculated by the centroid method

[0222] The fifth logical operation includes: u2 = (u1 / b) · U. In this embodiment, b is defined as 3, u1 is 3. When the error fuzzy level is PB, U = 2.25, and u2 = (u1 / b) · U = (2.25 / 3) * 3.

[0223] According to the size relationship between the defuzzified output u2 and 0, the energization states of the first solenoid valve and the second solenoid valve are controlled, and the pressure regulating device is controlled to increase pressure or maintain pressure or reduce pressure through the energization states of the first solenoid valve and the second solenoid valve.

[0224] When the defuzzified output u2 is greater than 0, the first solenoid valve and the second solenoid valve are energized, and the pressure regulating device increases pressure.

[0225] When the defuzzified output u2 is equal to 0, the first solenoid valve is de-energized and the second solenoid valve is energized, and the pressure regulating device maintains pressure.

[0226] When the defuzzified output u2 is less than 0, the first solenoid valve and the second solenoid valve are de-energized, and the pressure regulating device reduces pressure.

[0227] In this embodiment, when the error fuzzy level is PB, when the output is (2.25 / 3) * u1, it means that the pressure regulating device is always in the pressure increasing operation. When it is between 0 and (2.25 / 3) * u1, it first increases pressure and then maintains pressure. The closer u2 is to 0, the smaller the pressure increasing ratio and the larger the pressure maintaining ratio.

[0228] When the output is -(2.25 / 3) * u1, it means that the pressure regulating device is always in the pressure reducing operation. When u2 is between -(2.25 / 3) * u1 and 0, the pressure regulating device first reduces pressure and then maintains pressure. The closer u is to 0, the smaller the pressure reducing ratio and the larger the pressure maintaining ratio. The ratio range of the pressure reducing ratio and the pressure maintaining ratio can be specified by oneself, or the pressure reducing ratio and the pressure maintaining ratio can be controlled to change uniformly through a linear function.

[0229] In this application, the fuzzy control algorithm is used as the main control algorithm. The error e is fuzzified, and after fuzzy inference, the output u is defuzzified to obtain the defuzzified output u2. The energization or de-energization of the first solenoid valve and the second solenoid valve is controlled by the magnitude of the defuzzified output u2, thereby controlling the pressure regulating device to increase pressure, decrease pressure, or maintain pressure. This application avoids the complex modeling process and the influence of items such as friction that cannot be accurately modeled, does not rely on the accurate mathematical model of the controlled object, simplifies the system complexity, and makes the control of the auxiliary door opening module simpler.

[0230] In some embodiments of this application, when the difference between the pilot pressure detected by the first pressure sensor and the output pressure detected by the second pressure sensor is greater than the preset difference, the controller prompts that the relay valve is damaged and the relay valve needs to be replaced or repaired in time.

[0231] In some embodiments of this application, when the interaction force F0 is equal to 0, it indicates that the door body is opened at this time, or when the change range of F0 is less than or equal to F 定 it indicates that the pulling force does not meet the requirements at this time, representing that the auxiliary door opening module is not required to open the door, and the door opening device needs to be cleared to 0 at this time. When the change range of F0 is greater than F 定 it represents that the auxiliary door opening module needs to be controlled to open the door at this time, and the door opening device needs to be set to 1 at this time.

[0232] When the door does not need to be opened, the auxiliary door opening module is in a pressure-reducing state. When the door needs to be opened, the fuzzy control logic is started to control the output force to meet the preset interaction force F2.

[0233] In some embodiments of this application, the controller is configured to: obtain the actual pressure value F2' through the pilot pressure or the output pressure.

[0234] Define the difference between the preset interaction force F2 and the actual pressure value F2' as the error e, and obtain the fuzzy output u3 according to the error e through the fuzzy control logic. Obtain the defuzzified output u2 according to the fuzzy output u3 through the defuzzification control logic;

[0235] Control the energization states of the first solenoid valve and the second solenoid valve according to the positive or negative value of the defuzzified output u2, and control the pressure regulating device to increase pressure, maintain pressure, or decrease pressure through the energization states of the first solenoid valve and the second solenoid valve.

[0236] When the defuzzified output u2 is not 0 and is positive, the first solenoid valve and the second solenoid valve are energized, and the pressure regulating device increases pressure.

[0237] When the defuzzified output u2 is equal to 0, the first solenoid valve is de-energized and the second solenoid valve is energized, and the pressure regulating device maintains pressure.

[0238] When the anti-fuzzy output u2 is not 0 and is negative, the first solenoid valve and the second solenoid valve are de-energized, and the pressure regulating device reduces the pressure.

[0239] This application uses a fuzzy control algorithm as the main control algorithm. The error e is fuzzified. After fuzzy inference, the output u is defuzzified to output the anti-fuzzy output u2. The energization or de-energization of the first solenoid valve and the second solenoid valve is controlled by the positive or negative value of the anti-fuzzy output u2, and then the pressure regulating device is controlled to increase pressure, reduce pressure or maintain pressure. This application avoids the complex modeling process and the influence of items such as friction that cannot be accurately modeled, does not rely on the accurate mathematical model of the controlled object, simplifies the system complexity, and makes the control of the auxiliary door opening module simpler.

[0240] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit them; although this application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of this application.

[0241] For the sake of explanation, the above description has been made in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. According to the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are for the purpose of better explaining the principles and practical applications, so that those skilled in the art can better use the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. A clothes dryer, characterized in that, it comprises: a cabinet including a feeding port provided on the front side of the cabinet; a drying drum provided inside the cabinet; a door body connected to the cabinet and used for opening or closing the feeding port; a door lock connected to the cabinet, the door lock locking the door body to restrict the door body from opening the feeding port or unlocking the door lock from the door body to enable the door body to open the feeding port; an auxiliary door opening module provided inside the cabinet for applying an air thrust to the door body to unlock the door body from the door lock; the auxiliary door opening module includes: a power source for providing compressed air; a pressure reducing device for reducing the pressure of the air flowing through the pressure reducing device, the air inlet of the pressure reducing device being communicated with the air outlet of the power source; a pressure regulating device for regulating the air pressure, the air inlet of the pressure regulating device being communicated with the air outlet of the pressure reducing device, and the pressure regulating device outputting a pilot pressure; a pressure channel for transmitting air; a relay valve, the air inlet of which is communicated with the air outlet of the power source and the air outlet of which is communicated with the inlet of the pressure channel; the pilot port of the relay valve is connected to the pressure regulating device; a first air pressure sensor for detecting the pressure value of the air between the pilot port of the relay valve and the pressure regulating device and recording the detected pressure value as the pilot pressure; a second air pressure sensor for detecting the pressure value of the air between the air outlet of the relay valve and the pressure channel and recording the detected pressure value as the output pressure; the pressure regulating device includes: a first solenoid valve, the inlet of which is connected to the outlet of the pressure reducing valve; a second solenoid valve, the inlet of which is connected to the outlet of the first solenoid valve and the pilot port of the relay valve; a controller configured to: obtain an actual pressure value F2' through the pilot pressure or the output pressure; define the difference between the preset interaction force F2 and the actual pressure value F2' as an error e, and obtain a fuzzy output quantity u3 according to the error e through a fuzzy control logic; obtain an anti-fuzzy output quantity u2 according to the fuzzy output quantity u3 through an anti-fuzzy control logic; control the energization states of the first solenoid valve and the second solenoid valve according to the magnitude of the value of the anti-fuzzy output quantity u2, and control the pressure regulating device to increase pressure, maintain pressure or reduce pressure through the energization states of the first solenoid valve and the second solenoid valve.

2. A clothes dryer, characterized in that, it comprises: a cabinet including a feeding port provided on the front side of the cabinet; a drying drum provided inside the cabinet; a door body connected to the cabinet and used for opening or closing the feeding port; a door lock connected to the cabinet, the door lock locking the door body to restrict the door body from opening the feeding port or unlocking the door lock from the door body to enable the door body to open the feeding port; an auxiliary door opening module provided inside the cabinet for applying an air thrust to the door body to unlock the door body from the door lock; the auxiliary door opening module includes: a power source for providing compressed air; a pressure reducing device for reducing the pressure of the air flowing through the pressure reducing device, the air inlet of the pressure reducing device being communicated with the air outlet of the power source; A pressure regulating device, used for regulating air pressure. The air inlet of the pressure regulating device is communicated with the air outlet of the pressure reducing device, and the pressure regulating device outputs a pilot pressure; A pressure channel, used for transmitting air; A relay valve, whose air inlet is communicated with the air outlet of the power source and whose air outlet is communicated with the inlet of the pressure channel; the pilot port of the relay valve is connected to the pressure regulating device; A first air pressure sensor, used for detecting the pressure value of the air between the pilot port of the relay valve and the pressure regulating device and recording the detected pressure value as the pilot pressure; A second air pressure sensor, used for detecting the pressure value of the air between the air outlet of the relay valve and the pressure channel and recording the detected pressure value as the output pressure; The pressure regulating device includes: A first solenoid valve, whose inlet is connected to the outlet of the pressure reducing valve; A second solenoid valve, whose inlet is connected to the outlet of the first solenoid valve and the pilot port of the relay valve; A controller, configured to: Obtain an actual pressure value F2' through the pilot pressure or the output pressure; Define the difference between the preset interaction force F2 and the actual pressure value F2' as an error e, and obtain a fuzzy output quantity u3 through fuzzy control logic according to the error e; Obtain an anti-fuzzy output quantity u2 through anti-fuzzy control logic according to the fuzzy output quantity u3; Control the energization states of the first solenoid valve and the second solenoid valve according to the positive or negative value of the anti-fuzzy output quantity u2, and control the pressure regulating device to increase pressure or maintain pressure or reduce pressure through the energization states of the first solenoid valve and the second solenoid valve.

3. The clothes dryer according to claim 1, characterized in that Define the basic domain of the error e as [-E, E], where E is the maximum boundary value of the error e, and obtain the domain of the input fuzzy subset through a first logical operation based on the maximum boundary value E of the error e and the error e.

4. The clothes dryer according to claim 3, characterized in that The domain of the input fuzzy subset is defined as an integer greater than or equal to -a and less than or equal to a; Obtain the error fuzzy level corresponding to the error e according to the input fuzzy subset obtained from the error e.

5. The clothes dryer according to claim 3 or 4, characterized in that Define the basic domain of the output quantity u as [-u1, u1], where u1 is the maximum boundary value of the output quantity u, and obtain the domain of the output fuzzy subset through a second logical operation based on the maximum boundary value u1 of the output quantity u and the output quantity u.

6. The clothes dryer according to claim 5, characterized in that The domain of the output fuzzy subset is defined as an integer greater than or equal to -b and less than or equal to b; Obtain the output quantity fuzzy level corresponding to the output quantity u according to the fuzzy subset obtained from the output quantity u.

7. The clothes dryer according to claim 6, characterized in that The error fuzzy level obtains the output quantity fuzzy level corresponding to the error fuzzy level through a third logic.

8. The clothes dryer according to claim 7, characterized in that Define the membership degree relationship between the error fuzzy levels and the domain of the input fuzzy subsets, as well as the membership degree relationship between the output quantity fuzzy levels and the domain of the output fuzzy subsets, and obtain the fuzzy output quantity u3 corresponding to the error fuzzy levels through the fourth logic.

9. The clothes dryer according to claim 8, characterized in that, perform an operation based on the fuzzy output quantity u3 and the maximum boundary value u1 of the output quantity u to obtain the defuzzified output quantity u2, control the energization states of the first solenoid valve and the second solenoid valve according to the magnitude relationship between the defuzzified output quantity u2 and 0, and control the pressure regulating device to increase pressure or maintain pressure or reduce pressure through the energization states of the first solenoid valve and the second solenoid valve.

10. The clothes dryer according to claim 9, characterized in that, when the defuzzified output quantity u2 is greater than 0, the first solenoid valve and the second solenoid valve are energized, and the pressure regulating device increases pressure; when the defuzzified output quantity u2 is equal to 0, the first solenoid valve is de-energized and the second solenoid valve is energized, and the pressure regulating device maintains pressure; when the defuzzified output quantity u2 is less than 0, the first solenoid valve and the second solenoid valve are de-energized, and the pressure regulating device reduces pressure.

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