Clothes dryer

Abstract

The application discloses a clothes dryer, comprising: a box body; a door body; a door lock; an auxiliary door opening module, comprising: a power source; a pressure reducing device, an air inlet of which is communicated with an air outlet of the power source; a pressure regulating device, an air inlet of which is communicated with an air outlet of the pressure reducing device, and the pressure regulating device outputs a pilot pressure; a pressure channel; a relay valve, an air inlet of which is communicated with the 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 with the pressure regulating device, the relay valve receives the pilot pressure output by the pressure regulating device, the relay valve amplifies the flow according to the pilot pressure and outputs driving air into the pressure channel, and the pressure of the driving air is the same as the pilot pressure; when the door body is locked with the door lock, an outlet of the pressure channel is opposite to the door body and exerts force on the door body through the driving air to unlock the door body with the door lock; the auxiliary door opening function is realized, and the problem of insufficient arm strength of a user to open the door body and the problem of unsmooth opening of the door body are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of household appliances, in particular to a clothes dryer. BACKGROUND

[0002] The clothes dryer is a device for quickly drying wet clothes. The clothes dryer comprises a cabinet and a door body. The cabinet is provided with a feeding opening, and the door body is used to open or close the feeding opening. When the clothes dryer is working, the door body must be kept closed to ensure that hot air does not leak out, thereby ensuring the drying effect. When the clothes dryer stops working, the user needs to open the door to take out the clothes. Since the door is generally tightly closed to ensure the drying effect during drying, the user generally needs to use a large pulling force to open the door.

[0003] At present, the door opening and closing of the clothes dryer usually adopts a mechanical or electronic switch. When the door opening and closing is a mechanical switch, the user needs to pull the door opening and closing device with a certain pulling force. When the door opening and closing is an electronic switch, the electronic switch comprises a sensor and a control circuit. When the user approaches the clothes dryer, the sensor detects the presence of the user and automatically opens the door through mechanical transmission.

[0004] However, when the door opening and closing 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. In addition, since the size of the pulling force needs to be estimated by oneself, too small or too large will bring discomfort, and users who pursue smooth experience will not have a good experience. When the door opening and closing is an electronic switch, it is highly possible to misjudge the user's intention to open the door, resulting in the door being opened when it is not needed to be opened. Therefore, the present application proposes a clothes dryer. SUMMARY

[0005] The present application aims to at least solve one of the technical problems in the related art. To this end,

[0006] According to the embodiments of the present application, a clothes dryer is provided, comprising:

[0007] a cabinet comprising a feeding opening arranged on the front side of the cabinet;

[0008] a drying drum arranged in the cabinet;

[0009] a door body connected with the cabinet and used to open or close the feeding opening;

[0010] a door lock connected with the cabinet, the door lock locking the door body to restrict the door body from opening the feeding opening, or the door lock being unlocked with the door body to enable the door body to open the feeding opening;

[0011] An auxiliary door opening module is arranged in the cabinet and used to apply air thrust to the door body to unlock the door body from the door lock; the auxiliary door opening module comprises:

[0012] A power source is used to provide compressed air;

[0013] A 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;

[0014] A pressure regulating device is used to regulate the air pressure, and 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;

[0015] A pressure channel is used to transmit air;

[0016] A relay valve has its air inlet communicated with the air outlet of the power source and its air outlet communicated with the inlet of the pressure channel; the pilot port of the relay valve is connected with the pressure regulating device, the relay valve receives the pilot pressure output by the pressure regulating device, the relay valve amplifies the flow according to the pilot pressure and outputs driving air into the pressure channel, and the pressure of the driving air is the same as the pilot pressure;

[0017] When the door body is locked with the door lock, the outlet of the pressure channel is opposite to the door body and applies force to the door body by driving air to unlock the door body from the door lock.

[0018] The drying machine comprises an auxiliary door opening module, and the auxiliary door opening module comprises a power source, a pressure reducing device, a pressure regulating device, a relay valve and a pressure channel, can apply air with a certain pressure to the door body to open the door body, can play a role of assisting the opening of the door, can solve the problem that the user cannot open the door body due to insufficient arm strength and the problem that the user cannot open the door smoothly due to inaccurate estimation of the opening force, has high air transmission stability, uniform and smooth output, can prolong the service life of the door lock and can bring the user a smooth door opening experience.

[0019] According to the embodiment of the present disclosure, the auxiliary door opening module further comprises:

[0020] A pressure sensor is used to detect the interaction force F0 between the door body and the cabinet;

[0021] A 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 a pilot pressure;

[0022] A 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 an output pressure;

[0023] The clothes dryer further comprises:

[0024] a controller configured to:

[0025] monitor the interaction force between the door body and the cabinet;

[0026] when the interaction force decreases and the interaction force is less than a first preset interaction force, control the pressure regulating device to increase pressure or maintain pressure, and the relay valve reduces the interaction force by delivering air to the pressure channel.

[0027] According to the embodiment of the present disclosure, the controller is configured to:

[0028] after the interaction force F0 decreases and the interaction force F0 is less than the first preset interaction force, acquire the current pilot pressure of the air in the pilot flow path, 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 pressure to increase the pilot pressure, and when the current pilot pressure reaches the first pilot pressure P1, control the pressure regulating device to maintain pressure to keep the pilot pressure unchanged.

[0029] By monitoring the interaction force F0 between the door body and the cabinet, and controlling the pressure regulating device to increase pressure or maintain pressure when the interaction force F0 decreases and the interaction force F0 is less than the first preset interaction force, the relay valve can generate air with a certain pressure to force the door body to open; and by monitoring the interaction force F0 between the door body and the cabinet to identify whether the user has an intention to open the door, and proving that the user indeed has some action on the door body when the interaction force F0 decreases, and proving that the user indeed has an intention to open the door when the interaction force F0 is less than the first preset interaction force, the pressure is increased or maintained and the relay valve outputs air to avoid misjudging the user's intention to open the door to cause the door to open when it is not needed to open, thereby improving the accuracy of the intention to open the door and improving the user experience.

[0030] According to the embodiment of the present disclosure, when the current pilot pressure does not reach the first pilot pressure P1, the pressure regulating device is controlled to increase pressure to increase the pilot pressure of the air in the pilot flow path, and the pilot pressure stops increasing after increasing to a target pilot pressure P0.

[0031] According to the embodiment of the present disclosure, when the interaction force decreases to 0, the door body and the door lock are unlocked, the pressure regulating device is controlled to decrease pressure, and the auxiliary door opening module no longer generates a pushing force on the door body.

[0032] According to the embodiment of the present disclosure, the pressure regulating device comprises:

[0033] a first electromagnetic valve, an inlet of which is connected with an outlet of the pressure reducing valve;

[0034] a second electromagnetic valve, an inlet of which is connected with an outlet of the first electromagnetic valve and a pilot port of the relay valve;

[0035] when the pressure regulating device is pressurizing, the first electromagnetic valve and the second electromagnetic valve are energized;

[0036] when the pressure regulating device is maintaining pressure, the first electromagnetic valve is de-energized and the second electromagnetic valve is energized;

[0037] when the pressure regulating device is depressurizing, the first electromagnetic valve and the second electromagnetic valve are de-energized.

[0038] According to the embodiments of the present disclosure, the pressure regulating device further comprises:

[0039] a flow regulator, an inlet of which is connected with the pressure reducing device and which is used to control the flow between the pressure regulating device and the pilot port of the relay valve.

[0040] According to the embodiments of the present disclosure, the auxiliary door opening module further comprises:

[0041] an air path pressure control device, an inlet of which is connected with the air outlet of the power source and which is used to control the overflow air pressure of the air path between the air outlet of the power source and the pressure reducing device.

[0042] According to the embodiments of the present disclosure, the auxiliary door opening module further comprises:

[0043] a one-way air device, which is used to prevent air backflow and inlets and outlets of which are connected with the air outlet of the power source and the pressure reducing device respectively.

[0044] According to the embodiments of the present disclosure, a clothes dryer is further provided, comprising:

[0045] a cabinet, comprising a drop opening arranged on a front side of the cabinet;

[0046] a door body, which is connected with the cabinet and is used to open or close the drop opening;

[0047] a door lock, which connects the cabinet, the door lock locks the door body to limit the door body to open the drop opening or the door lock is unlocked with the door body so that the door body can open the drop opening;

[0048] an auxiliary door opening module, which is arranged in the cabinet and is used to apply air thrust to the door body to unlock the door lock; the auxiliary door opening module comprises:

[0049] a power source, which is used to provide compressed air;

[0050] a pressure reducing device, which is used to reduce the pressure of air flowing through the pressure reducing device, an air inlet of the pressure reducing device is communicated with an air outlet of the power source;

[0051] A pressure regulating device is used to regulate air pressure. The air inlet of the pressure regulating device is connected to the air outlet of the pressure reducing device. The pressure regulating device outputs pilot pressure.

[0052] Pressure channel, used for air transmission;

[0053] A relay valve, the air inlet of which is connected to the air outlet of the power source and the air outlet of which is connected to the inlet of the pressure channel; the pilot port of the relay valve is connected to the pressure regulating device.

[0054] A pressure sensor is installed on the housing to detect the interaction force F0 between the door and the housing;

[0055] The first air pressure sensor is used to detect the air pressure between the pilot port of the relay valve and the pressure regulating device and record the detected pressure value as the pilot pressure.

[0056] The second air pressure sensor is used to detect the air pressure between the air outlet of the relay valve and the pressure channel and record the detected pressure value as the output pressure.

[0057] The dryer also includes:

[0058] The controller is configured as follows:

[0059] Monitor the interaction force F0 between the door and the box;

[0060] When the interaction force F0 decreases and is less than the first preset interaction force, the pressure regulating device is controlled to increase or maintain pressure, and the relay valve supplies air to the pressure channel to reduce the interaction force.

[0061] By monitoring the interaction force F0 between the door and the housing, and controlling the pressure regulating device to increase or maintain pressure when the interaction force F0 decreases and is less than a first preset interaction force, the relay valve can generate air at a certain pressure to apply force to the door, causing it to open. Furthermore, by monitoring the interaction force F0 between the door and the housing, the system identifies whether the user intends to open the door. A decrease in interaction force F0 indicates that the user has indeed made some movement towards the door, and a decrease in interaction force F0 indicates that the user has indeed intended to open the door. Therefore, increasing or maintaining pressure when the interaction force F0 decreases and is less than the first preset interaction force, and outputting air from the relay valve, can prevent misjudgments of the user's intention to open the door, thus avoiding the door opening unnecessarily. This improves the accuracy of the intention to open the door and enhances the user experience. Attached Figure Description

[0062] In order to make the technical solutions in the embodiments of the present application or the prior art clearer, the accompanying drawings needed in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description only show some embodiments of the present application, and for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0063] Figure 1 is a structural diagram of the door opening assisting module of the embodiment of the present application;

[0064] Figure 2 is another structural diagram of the door opening assisting module of the embodiment of the present application;

[0065] Figure 3 is another structural diagram of the door opening assisting module of the embodiment of the present application;

[0066] Figure 4 is another structural diagram of the door opening assisting module of the embodiment of the present application;

[0067] Figure 5 is a front view of the clothes drying machine of the embodiment of the present application;

[0068] Figure 6 is another front view of the clothes drying machine of the embodiment of the present application;

[0069] Figure 7 is a principle diagram of the door body opening of the embodiment of the present application;

[0070] Figure 8 is a structural diagram of the clothes drying machine of the embodiment of the present application;

[0071] Figure 9 is another structural diagram of the clothes drying machine of the embodiment of the present application;

[0072] Figure 10 is another structural diagram of the clothes drying machine of the embodiment of the present application.

[0073] In the following drawings:

[0074] 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; drum front seal 123; drum rear seal 124; laundry containing cavity 125; motor 126; belt 127; fan 13; evaporator 141; condenser 142; first water storage tank 15; second water storage tank 16; water pump 17; first water discharge pipe 171; water container 18; water container tray 19; second water discharge pipe 191; auxiliary door opening module 4; power source 41; pressure reducing device 42; pressure regulating device 43; first electromagnetic valve 431; second electromagnetic valve 432; flow regulating device 433; pressure passage 44; main pressure passage 441; auxiliary pressure passage 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 air discharge device 475; backup air source device 476; filtering device 477; door body 5; door handle 51. DETAILED DESCRIPTION

[0075] In order to make the objectives, technical solutions, and advantages of the present application clearer, the present application is 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 should not be 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 creative effort fall within the scope of the present application.

[0076] It is obvious that the accompanying drawings in the following description are only some examples or embodiments of the present application, and for those of ordinary skill in the art, the present application can be applied to other similar scenarios without creative effort based on these drawings. In addition, it can be understood that although the efforts made in this development process can be complex and lengthy, for those of ordinary skill in the art related to the content disclosed in the present application, some design, manufacture, or production changes based on the technical content disclosed in the present application are only routine technical means and should not be understood as insufficient disclosure of the present application.

[0077] In the present application, the phrase "embodiment" means that the specific features, structures, or characteristics described in conjunction with the embodiment can be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily mean the same embodiment, nor is it an independent or alternative embodiment to 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.

[0078] The terms "connected", "connected", "coupled" and the like in the present application are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The present application refers to "a plurality" to two or more. "And / or" describes the association between the associated objects, which means that there can be three relationships, for example, "A and / or B" can mean that A exists alone, A and B exist together, and B exists alone. The character " / " generally represents the relationship between the front and rear associated objects as "or". The terms "first", "second", "third" and the like in the present application are only to distinguish similar objects, and do not represent a specific order for the objects.

[0079] In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, also not within the protection scope required by the present application.

[0080] Reference Figures 1-10 The laundry dryer 100 comprises a cabinet 1, wherein the bottom to the top of the cabinet 1 is the height direction of the cabinet.

[0081] Reference Figures 5-6 And Figures 8-10 The cabinet 1 forms the appearance of the laundry dryer 100, and the cabinet 1 has a containing space inside, which is used to accommodate and fix various components in the laundry dryer 100, so as to ensure the structural stability of the laundry dryer 100.

[0082] The cabinet 1 comprises a drop port (not shown), wherein the drop port is arranged on the front side of the cabinet 1.

[0083] The laundry dryer further comprises a drying drum 12, which is arranged in the cabinet 1, wherein the drying drum 12 is rotatably arranged in the cabinet 1.

[0084] Specifically, the cabinet comprises a placing space arranged in the cabinet, wherein the drying drum is arranged in the placing space.

[0085] The drying drum comprises a drying port (not shown) arranged at the side end of the drying drum, wherein the drying port is arranged on the side of the drying drum close to the drop port, and the drying port is arranged opposite to the drop port.

[0086] A clothes containing cavity is formed in the drying drum 12, wherein the clothes containing cavity is communicated with the drying port, and clothes can be placed in the clothes containing cavity through the drop port and the drying port. The clothes containing cavity is used to contain clothes to be dried, so as to dry the clothes to be dried in the clothes containing cavity.

[0087] The clothes dryer further comprises a door body 5, wherein the door body is connected with the cabinet and is used to open or close the drop port. The door body 5 is arranged at one side of the drying cylinder 12, and the clothes are put into or taken out through the opening and closing of the door body 5 to realize the taking and putting of the clothes in the clothes accommodating cavity.

[0088] The clothes dryer further comprises a door lock, wherein the door lock is connected with the cabinet, the door lock locks the door body to limit the opening of the drop port by the door body, or the door lock is unlocked with the door body to enable the door body to open the drop port.

[0089] At present, the opening of the door body of the clothes dryer requires a certain arm strength of the user, and it is difficult for special groups with poor arm strength to open the door body. In addition, since the pulling force needs to be estimated by the user, too small or too large will bring discomfort to the user, and the experience of the user who pursues smooth experience is poor. Alternatively, the clothes dryer often misjudges the opening intention of the user to cause the door to be opened when it is not needed to be opened.

[0090] Therefore, the clothes dryer further comprises an auxiliary door opening module 4, wherein the auxiliary door opening module 4 is arranged in the cabinet, and the auxiliary door opening module 4 is used to apply an air thrust to the door body to unlock the door body and the door lock.

[0091] Reference Figure 1 The auxiliary door opening module 4 comprises a power source 41, wherein the power source is used to provide compressed air.

[0092] Reference Figure 1 The auxiliary door opening module 4 further comprises a pressure reducing device 42, wherein 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 air flowing out of the power source and output the air after pressure reduction.

[0093] The auxiliary door opening module 4 further comprises a pressure regulating device 43, wherein the pressure regulating device 43 is used to regulate the pressure of the air, 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.

[0094] Reference Figure 1 The maximum pressure of the pressure regulating device is regulated by the pressure reducing device 42.

[0095] Reference Figure 1 The auxiliary door opening module 4 further comprises a pressure channel 44, wherein the pressure channel 44 is used to transmit the air.

[0096] Reference Figure 1The auxiliary door opening module 4 further comprises a relay valve 45, wherein an air inlet of the relay valve 45 is in communication with an air outlet of the power source, and an air outlet of the relay valve 45 is in communication with an inlet of the pressure channel; a pilot port of the relay valve is connected with the pressure regulating device, the relay valve receives a pilot pressure output by the pressure regulating device, and the relay valve amplifies a flow according to the pilot pressure and outputs driving air to the pressure channel, and the pressure of the driving air is the same as the pilot pressure.

[0097] When the door body is locked with the door lock, the outlet of the pressure channel is opposite to the door body and applies force to the door body through the driving air to unlock the door body and the door lock.

[0098] The laundry dryer comprises an auxiliary door opening module, the auxiliary door opening module comprises a power source, a pressure reducing device, a pressure regulating device, a relay valve and a pressure channel, and air with a certain pressure can apply force to the door body to open the door body. The auxiliary door opening module can assist in opening the door, solve the problem that the user's arm strength is insufficient to open the door body, and the problem that the user's estimation of the opening force is not accurate, the air transmission is stable, the output is uniform and smooth, the service life of the door lock can be prolonged, and a smooth door opening experience can be provided to the user.

[0099] In some embodiments of the present application, the power source can be a pump body, wherein the power source can be a small pump.

[0100] In some embodiments of the present application, the pressure reducing device is a pressure reducing valve.

[0101] In some embodiments of the present application, with reference to Figures 5-6 The auxiliary switch module further comprises a pressure sensor 46 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.

[0102] The auxiliary switch module further comprises a first air pressure sensor 471 and a second air pressure sensor 472.

[0103] 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 the pressure value detected by the first air pressure sensor is recorded as a pilot pressure.

[0104] 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 channel, and the pressure value detected by the second air pressure sensor 472 is recorded as an output pressure.

[0105] Specifically, the flow path between the pilot port of the relay valve and the pressure regulating device is a pilot flow path; and the flow path between the air outlet of the relay valve and the pressure channel is an output flow path.

[0106] The first air pressure sensor is configured to detect the pressure value of the air in the pilot flow path, and the second air pressure sensor is configured to detect the pressure value of the air in the output flow path.

[0107] The clothes dryer further comprises a controller (not shown) configured to:

[0108] monitor the interaction force F0 between the door body and the cabinet;

[0109] When the interaction force F0 decreases and the interaction force F0 is less than the first preset interaction force, the pressure regulating device is controlled to increase the pressure or to keep the pressure unchanged, the pilot valve delivers air to the pressure channel to reduce the interaction force, and when the interaction force is reduced to 0, the door body is unlocked from the door lock.

[0110] By monitoring the interaction force F0 between the door body and the cabinet and controlling the pressure regulating device to increase the pressure or to keep the pressure unchanged when the interaction force F0 decreases and the interaction force F0 is less than the first preset interaction force, the pilot valve can generate air with a certain pressure to apply force to the door body to open the door body. By monitoring the interaction force F0 between the door body and the cabinet, it can be determined whether the user has an intention to open the door, and when the interaction force F0 decreases, it is proved that the user does have some action on the door body, and when the interaction force F0 is less than the first preset interaction force, it is proved that the user does have 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, the pressure is increased or kept unchanged, and the pilot valve outputs air, which can avoid the door from being opened when it is not needed due to misjudgment of the user's intention to open the door, thereby improving the accuracy of the intention to open the door and improving the user experience.

[0111] It should be noted that the controller refers to a device that can generate operation control signals according to instruction operation codes and timing signals to instruct the clothes dryer 100 to execute control instructions. For example, the controller can be a central processing unit (CPU), a general processor network processor (NP), a digital signal processing (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, and the embodiments of the present application do not make any limitation thereto.

[0112] In some embodiments of the present application, the controller is configured to:

[0113] When the interaction force F0 decreases and is less than the first preset interaction force, a current pilot pressure of air in the pilot flow path is obtained, and it is determined whether the current pilot pressure reaches the first pilot pressure P1. When the current pilot pressure does not reach the first pilot pressure P1, the pressure regulating device is controlled to increase the pressure so as to increase the pilot pressure. When the current pilot pressure reaches the first pilot pressure P1, the pressure regulating device is controlled to keep the pressure unchanged.

[0114] In some embodiments of the present application, the controller is configured to:

[0115] When the current pilot pressure does not reach the first pilot pressure P1, the pressure regulating device is controlled to increase the pressure so as to increase the pilot pressure of air in the pilot flow path. The pilot pressure stops increasing when the pilot pressure increases to the target pilot pressure P0.

[0116] The door body needs a pushing force F2 to open the door, and the corresponding target pilot pressure is P0.

[0117] In some embodiments of the present application, when the interaction force decreases to 0, the pressure regulating device decreases the pressure, and the auxiliary door opening module no longer generates a pushing force on the door body.

[0118] In some embodiments of the present application, with reference to Figure 2 , the pressure regulating device includes a first electromagnetic valve 431 and a second electromagnetic valve 432.

[0119] The inlet of the first electromagnetic valve 431 is connected with the outlet of the pressure reducing valve.

[0120] The inlet of the second electromagnetic valve 432 is connected with the outlet of the first electromagnetic valve and the pilot port of the relay valve.

[0121] When the pressure regulating device increases the pressure, the first electromagnetic valve and the second electromagnetic valve are powered on.

[0122] When the pressure regulating device keeps the pressure unchanged, the first electromagnetic valve is powered off and the second electromagnetic valve is powered on.

[0123] When the pressure regulating device decreases the pressure, the first electromagnetic valve and the second electromagnetic valve are powered off.

[0124] In the drawings, the first electromagnetic valve and the second electromagnetic valve are powered off.

[0125] The communication and disconnection of the first electromagnetic valve are controlled by the power-on and power-off of the first electromagnetic valve, and the disconnection and communication of the second electromagnetic valve are controlled by the power-on and power-off of the second electromagnetic valve.

[0126] When the first electromagnetic valve is powered on, the first electromagnetic valve is connected. When the first electromagnetic valve is powered off, the first electromagnetic valve is disconnected. When the second electromagnetic valve is powered off, the second electromagnetic valve is connected. When the second electromagnetic valve is powered on, the second electromagnetic valve is disconnected.

[0127] The outlet of the second electromagnetic valve is connected to other devices or is open.

[0128] The first electromagnetic valve and the second electromagnetic valve are two-position three-way electromagnetic valves.

[0129] In some embodiments of the present application, with reference to Figure 2 , the pressure regulating device further comprises a flow regulator 433, wherein the inlet of the flow regulator is connected to the pressure reducing device, and the flow regulator 433 is used to control the flow 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, 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 output flow of the relay valve.

[0130] The flow regulator 433 can be a throttle valve.

[0131] In some embodiments of the present application, with reference to Figure 3 and Figure 4 , the auxiliary door opening module further comprises an air path pressure control device 473, the inlet of the air path pressure control device 473 is connected to the air outlet of the power source, and the air path pressure control device 473 is used to control the overflow air pressure of the flow path between the air outlet of the power source and the pressure reducing device.

[0132] The air path pressure control device 473 is an overflow valve, wherein 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.

[0133] In some embodiments of the present application, with reference to Figure 3 and Figure 4 , the auxiliary door opening module further comprises a one-way air device 474, the one-way air device 474 is used to prevent air backflow, 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.

[0134] The one-way air device 474 is a one-way valve.

[0135] In some embodiments of the present application, with reference to Figure 3 and Figure 4 , the auxiliary door opening module further comprises an emergency air exhaust device 475, the emergency air exhaust device 475 is used to cut off the air flow path between the power source and the pressure reducing device and the relay valve.

[0136] In the case of air continuously pushing the door body due to air path failure, the emergency air exhaust device 475 can be used to cut off the air path and simultaneously exhaust the air on the side of the emergency air exhaust device 475 away from the power source.

[0137] The emergency air exhaust device 475 can be a stop valve.

[0138] In some embodiments of the present application, with reference to Figure 3 and Figure 4 The auxiliary door opening module further comprises a filtering device 477 connected to the air inlet of the pressure regulating device and the air inlet of the relay valve on the side close to the power source. The filtering device is used to filter impurities in the air to ensure the purity of the gas.

[0139] The filtering device can be a filter.

[0140] In some embodiments of the present application, with reference to Figure 3 and Figure 4 The auxiliary door opening module further comprises a backup air source device 476, which can replace the power source for a period of time when the power source fails, improving the durability of the device and filling the gap before after-sales arrives.

[0141] The backup air source device 476 can be a gas storage tank with a certain volume.

[0142] In some embodiments of the present application, the pressure channel can be one way, the inlet of the pressure bucket is connected to the air outlet of the relay valve, and the outlet of the pressure channel is opposite to the door body when the door body closes the drop port.

[0143] In some embodiments of the present application, with reference to Figure 3 and Figure 4 The pressure channel comprises a main pressure channel 441, and the inlet of the main pressure channel 441 is connected to the air outlet of the relay valve.

[0144] The pressure channel further comprises at least two auxiliary pressure channels 442, wherein 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 correspond to different positions of the door body.

[0145] In some embodiments of the present application, with reference to Figure 5 and Figure 6 The door body comprises a door handle 51, wherein the pressure sensor is arranged on one side of the door handle of the door body, and the outlet of the pressure channel corresponds to the position of the door body on one side of the door handle when the door body closes the drop port.

[0146] In some embodiments of the present application, the number of pressure sensors is the same as the number of auxiliary pressure channels, wherein the pressure sensor corresponds to the auxiliary pressure channel one by one, that is, the pressure sensor is arranged on one side of the outlet of the auxiliary pressure channel, and the distance between each pressure sensor and the outlet of the corresponding auxiliary pressure channel is equal or the difference between the distances of two adjacent pressure sensors is within a certain range, to ensure the stability of the value detected by the pressure sensor.

[0147] The interaction force is the average value of the value detected by the pressure sensor.

[0148] In some embodiments of the present application, the cabinet includes a drop port provided on the front side of the cabinet; a door body connected with the cabinet and used for opening or closing the drop port; a door lock connecting the cabinet, the door lock locking the door body to limit the door body from opening the drop port or the door lock being unlocked with the door body so that the door body can open the drop port; and an auxiliary door opening module provided in the cabinet, the auxiliary door opening module being used for applying air thrust to the door body to unlock the door body with the door lock.

[0149] 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 for providing compressed air; the pressure reducing device is used for reducing the pressure of the air flowing through the pressure reducing device, the air inlet of the pressure reducing device being in communication with the air outlet of the power source; the pressure regulating device is used for regulating the pressure of the air, the air inlet of the pressure regulating device being in communication with the air outlet of the pressure reducing device, and the pressure regulating device outputting a pilot pressure; and the pressure channel is used for transmitting the air.

[0150] The air inlet of the relay valve is in communication with the air outlet of the power source, and the air outlet of the relay valve is in communication with the inlet of the pressure channel; the pilot port of the relay valve is connected with the pressure regulating device.

[0151] The pressure sensor is provided on the cabinet to detect the interaction force F0 between the door body and the cabinet.

[0152] The first air pressure sensor is 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.

[0153] The second air pressure sensor is 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.

[0154] A controller configured to:

[0155] Monitor the interaction force F0 between the door body and the cabinet.

[0156] When the interaction force F0 decreases and the interaction force F0 is less than a first preset interaction force, the pressure regulating device is controlled to increase the pressure or maintain the pressure, and the relay valve delivers the air to the pressure channel to reduce the interaction force.

[0157] By setting the interaction force F0 between the door body and the box, and when the interaction force F0 decreases and the interaction force F0 is less than the first preset interaction force, the pressure increasing device or pressure maintaining device is controlled to increase the pressure, so that the relay valve can generate a certain pressure of air to force the door body, so that the door body is opened; and by monitoring the interaction force F0 between the door body and the box, it is identified whether the user has the intention to open the door, and when the interaction force F0 decreases, it is proved that the user indeed has some actions on the door body, and when the interaction force F0 is less than the first preset interaction force, it is proved that the user indeed has the intention to open the door, so that the pressure is increased or maintained and the air output by the relay valve when the interaction force F0 decreases and the interaction force F0 is less than the first preset interaction force can avoid the door being opened when it is not needed to be opened due to misjudgment of the user's intention to open the door, so as to improve the accuracy of the intention to open the door and improve the user experience.

[0158] In some embodiments of the present application, the air outlet of the power source is connected with 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 with the air inlet of the air storage device, the air outlet of the air storage device is connected with the air inlet of the emergency air exhaust device, the air outlet of the emergency air exhaust device is connected with the air inlet of the filter device, and the air outlet of the filter device is connected with the air inlet of the pressure reducing device and the air inlet of the relay valve.

[0159] 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 filter 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, so that the output air pressure of the relay valve is kept consistent with the pilot pressure.

[0160] In some embodiments of the present application, when the pressure regulating device enters the pressure increasing state, and the air pressure value detected by the first air pressure sensor is greatly 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.

[0161] In some embodiments of the present application, if the user continuously forces during the whole door opening process, and the interaction force F0 is detected as 0 during the pressure increasing process, it indicates that the door has been opened.

[0162] If the user does not want to continuously force, but only wants to tell the dryer to open the door, the user can force for a short time and then release the hand, and wait for the auxiliary door opening module to work to open the door body.

[0163] In some embodiments of the present application, reference is made to Figures 8-10, the drying cylinder 12 is provided with an air inlet 121 and an air outlet 122, both of which are communicated with the clothes containing cavity, and the drying machine 100 will generate a drying airflow during the drying process, the drying airflow enters the clothes containing cavity from the air inlet 121 and carries away the moisture on the clothes and is discharged from the air outlet 122. Referring to 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.

[0164] Referring to Figures 8-10 , the box body 1 is provided with an air duct plate, and the air duct plate forms a drying air duct 11 therebetween, the drying air duct 11 is arranged between the box body 1 and the drying cylinder 12, and the two 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, and the drying air duct 11 is provided with a fan 13, the fan 13 is used to realize the flow of air in the drying air duct 11 from the air outlet 122 to the air inlet 121, so that the air in the clothes containing cavity enters the drying air duct 11 through the air outlet 122, and the air in the drying air duct 11 enters the clothes containing cavity through the air inlet 121, to realize the air circulation between the clothes containing cavity and the drying air duct 11. In this embodiment, the fan 13 is a centrifugal fan, which is located on the side close to the air inlet 121 of the drying cylinder 12 and is driven by a motor, and the drying cylinder 12 and the air duct plate are sealed by a front cylinder seal 123 and a rear cylinder seal 124.

[0165] In this embodiment, referring to 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, and the drying air duct 11 is communicated with the clothes containing cavity to form a loop channel. Referring to Figures 8-10 , wherein the arrow direction is the air circulation direction in the loop channel.

[0166] Referring to Figures 8-10 , the drying air duct 11 is provided with a drying device, the drying device is used to heat the condensed drying airflow, and the heated drying airflow is introduced into the clothes containing cavity from the air inlet 121. The drying device is also used to condense the high-temperature and high-humidity airflow discharged from the air outlet 122, so as to condense the moisture carried in the high-temperature and high-humidity airflow to form condensed water. Such circulation realizes that the moisture of the clothes in the clothes containing cavity is carried away by the drying airflow, so that the moisture on the clothes is separated from the clothes, so as to realize the drying of the clothes.

[0167] Specifically, referring to Figures 8-10In the embodiment, the drying device is arranged in the lower air duct 113, and the drying device comprises a condenser 142 and an evaporator 141. The condenser 142 is arranged 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 drying air flow. The drying air flow passes through the drying air duct 11 and enters the drying cylinder 12, thereby evaporating 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 discharged from the drying cylinder 12 has a large amount of water vapor. After passing through the front air duct 111, the high-temperature and high-humidity air flow contacts the evaporator 141 in the lower air duct 113, and condensate is precipitated from the high-temperature and high-humidity air flow to form 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 drying air flow.

[0168] With reference to Figures 8-10 The clothes dryer 100 further comprises a water storage tank for collecting the condensate formed on the evaporator 141. In the embodiment, the water storage tank comprises 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 located below the drying device. The second water storage tank 16 is arranged outside the drying air duct 11 and communicates with the first water storage tank 15, so that the condensate collected in the first water storage tank 15 enters the second water storage tank 16. By dividing the water storage tank into two parts and arranging them inside and outside the drying air duct 11, the volume of the water storage tank can be effectively increased, thereby increasing the capacity of the water storage tank.

[0169] With reference to Figures 8-10 In order to discharge the condensate in the water storage tank, the second water storage tank 16 is provided with a drain pump 17. The drain pump 17 is used to pump the water in the second water storage tank 16 into a water container 18 or outside the cabinet 1.

[0170] With reference to Figures 8-10 The top of the cabinet 1 is provided with the water container 18. The top of the water container 18 is provided with a water inlet. The water inlet and the drain pump 17 are connected by a first drain pipe 171. In the embodiment, the first drain pipe 171 extends upward from the bottom of the cabinet 1 to the top of the cabinet 1. The first drain pipe 171 communicates with the water container 18 through the water inlet, so as to discharge the condensate in the second water storage tank 16 into the water container 18.

[0171] With reference to Figures 8-10Further, the top of the cabinet 1 is further provided with a water container tray 19, the water container tray 19 is provided with a water container 18, and the water container tray 19 is in communication with the water storage tank. Specifically, the bottom of the water container tray 19 is provided with a water outlet, the water outlet is correspondingly arranged with the second water storage tank 16, the water outlet is in communication with the first water storage tank 15 through the second drain pipe 191, and the water container tray 19 is in communication with the second water storage tank 16 by arranging the water outlet and the second drain pipe 191. When the water in the water container is too much and overflows into the water container tray 19, it will flow into the second water storage tank 16 through the second drain pipe 191, so as to relieve the water overflow of the water container.

[0172] In some embodiments of the present application, the clothes dryer 100 can further include a display, which can be a liquid crystal display or an organic light-emitting diode display. The specific type, size, resolution, etc. of the display are not limited, and those skilled in the art can understand that the display can be changed in performance and configuration as needed.

[0173] The display can be used to display the control panel of the clothes dryer 100 or the running information of the clothes dryer 100. The clothes dryer displays the running information of the clothes dryer, such as the running time of the clothes dryer and the running drying program of the clothes dryer.

[0174] Wherein, whether to open the door body of the clothes dryer can be operated through the control panel, when it is needed to open, the controller controls the power source to work, the pressure regulating device to increase pressure or maintain pressure, and the relay valve to output air with pilot pressure and act on the door body, so that the door body is opened.

[0175] In some embodiments of the present application, the clothes dryer can further include a voice prompt device for playing voice prompt information according to a program. The content of the voice prompt information can be pre-set by the manufacturer of the clothes dryer 100, or can be set by the user through the man-machine interaction device. For example, when the controller obtains that the clothes have met the drying end condition (when the clothes dryer runs to the stop time), the controller can control the voice prompt device to play the prompt information such as "drying is completed".

[0176] The clothes dryer can further include a man-machine interaction device for realizing the interaction between the user and the clothes dryer. The man-machine interaction device can include one or more of physical keys or touch display panels. For example, the user can set the drying program required to be run by the clothes dryer through the man-machine interaction device.

[0177] Wherein, whether to open the door can be indicated to the clothes dryer through the man-machine interaction, and when it is needed to open the door, the auxiliary door opening module works.

[0178] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; 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 the present application.

[0179] The foregoing description has been presented for the purpose of illustration and description. It is not intended to be exhaustive or to limit the embodiments to the precise forms disclosed. Modifications and variations are possible in light of the above teachings or can be acquired from practice of the embodiments. The described embodiments were chosen and described in order to explain the principles of the embodiments and its practical application and to enable others skilled in the art to best use the embodiments and various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. A clothes dryer characterized by, The dryer comprises: a cabinet including a drop opening on a front side of the cabinet; a drying drum arranged in the cabinet; a door connected to the cabinet and used to open or close the drop opening; a door lock connected to the cabinet, the door lock locking the door to restrict the door from opening the drop opening, or the door lock being unlocked with the door to allow the door to open the drop opening; an auxiliary door opening module arranged in the cabinet and used to apply air thrust to the door to unlock the door with the door lock; the auxiliary door opening module comprises: a power source for providing compressed air; a pressure reducing device for reducing the pressure of air flowing through the pressure reducing device, an air inlet of the pressure reducing device being in communication with an air outlet of the power source; a pressure regulating device for regulating air pressure, an air inlet of the pressure regulating device being in communication with an air outlet of the pressure reducing device, the pressure regulating device outputting a pilot pressure; a pressure channel for transmitting air; a relay valve, an air inlet of the relay valve being in communication with the air outlet of the power source and an air outlet of the relay valve being in communication with an inlet of the pressure channel; a pilot port of the relay valve being connected to the pressure regulating device, the relay valve receiving the pilot pressure output by the pressure regulating device, the relay valve amplifying flow according to the pilot pressure and outputting driving air into the pressure channel, the pressure of the driving air being the same as the pilot pressure; when the door is locked with the door lock, an outlet of the pressure channel is opposite to the door and applies force to the door by driving air to unlock the door with the door lock; the auxiliary door opening module further comprises: a pressure sensor for detecting an interaction force F0 between the door and the cabinet; a first air pressure sensor for detecting the pressure value of air between the pilot port of the relay valve and the pressure regulating device and recording the detected pressure value as a pilot pressure; a second air pressure sensor for detecting the pressure value of air between the air outlet of the relay valve and the pressure channel and recording the detected pressure value as an output pressure; the dryer further comprises: a controller configured to: monitor the interaction force between the door and the cabinet; when the interaction force decreases and the interaction force is less than a first preset interaction force, control the pressure regulating device to increase pressure or maintain pressure, and the relay valve to reduce the interaction force by delivering air to the pressure channel.

2. The clothes dryer according to claim 1, characterized in that, the controller is configured to: 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 air in the pilot flow path, determine whether the current pilot pressure reaches a 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 pilot pressure, and when the current pilot pressure reaches the first pilot pressure P1, control the pressure regulating device to maintain the pilot pressure unchanged.

3. The clothes dryer according to claim 2, characterized in that, when the current pilot pressure does not reach the first pilot pressure P1, control the pressure regulating device to increase the pilot pressure of air in the pilot flow path, and stop increasing the pilot pressure when the pilot pressure increases to a target pilot pressure P0.

4. The clothes dryer according to claim 1, characterized in that, when the interaction force decreases to 0, the door is unlocked with the door lock, the pressure regulating device is controlled to reduce pressure, and the auxiliary door opening module no longer generates thrust to the door.

5. The clothes dryer according to claim 3, characterized in that, the pressure reducing device is a pressure reducing valve. The pressure regulating device comprises: a first electromagnetic valve, the inlet of which is connected with the outlet of the pressure reducing valve; a second electromagnetic valve, the inlet of which is connected with the outlet of the first electromagnetic valve and the pilot port of the relay valve; when the pressure regulating device is pressurized, the first electromagnetic valve and the second electromagnetic valve are energized; when the pressure regulating device is pressure maintaining, the first electromagnetic valve is de-energized and the second electromagnetic valve is energized; when the pressure regulating device is depressurized, the first electromagnetic valve and the second electromagnetic valve are de-energized.

6. The clothes dryer according to claim 1, characterized in that, The pressure regulating device further comprises: a flow regulator, the inlet of which is connected with the pressure reducing device and which is used to control the flow rate of the flow path between the pressure regulating device and the pilot port of the relay valve.

7. The clothes dryer according to claim 1, characterized in that, The auxiliary door opening module further comprises: an air path pressure control device, the inlet of which is connected with the air outlet of the power source and which is used to control the overflow air pressure of the flow path between the air outlet of the power source and the pressure reducing device.

8. The clothes dryer according to claim 1, characterized in that, The auxiliary door opening module further comprises: a one-way air device, which is used to prevent air backflow and the inlet and outlet of which are connected with the air outlet of the power source and the pressure reducing device respectively.

9. A clothes dryer characterized by It comprises: a cabinet, comprising a drop port arranged on the front side of the cabinet; a door body, which is connected with the cabinet and is used to open or close the drop port; a door lock, which connects the cabinet, the door lock locks the door body to restrict the door body from opening the drop port or the door lock is unlocked with the door body so that the door body can open the drop port; an auxiliary door opening module, which is arranged in the cabinet and is used to apply air thrust to the door body to unlock the door lock; the auxiliary door opening module comprises: a power source, which is used to provide compressed air; a pressure reducing device, which is used to reduce the pressure of the air flowing through the pressure reducing device, the air inlet of the pressure reducing device being in communication with the air outlet of the power source; a pressure regulating device, which is used to regulate the air pressure, the air inlet of the pressure regulating device being in communication with the air outlet of the pressure reducing device, the pressure regulating device outputting a pilot pressure; a pressure channel, which is used to transmit air; a relay valve, the air inlet of which is in communication with the air outlet of the power source and the air outlet of which is in communication with the inlet of the pressure channel; the pilot port of the relay valve being connected with the pressure regulating device; a pressure sensor, which is arranged on the cabinet to detect the interaction force F0 between the door body and the cabinet; a first air pressure sensor, which 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; a second air pressure sensor, which 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; The clothes dryer further comprises: a controller, which is configured to: monitor the interaction force F0 between the door body and the cabinet; when the interaction force F0 decreases and the interaction force F0 is less than a first preset interaction force, control the pressure regulating device to be pressurized or pressure maintained, and the relay valve to deliver air to the pressure channel to reduce the interaction force.

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