Clothes dryer and control method

Abstract

A clothes dryer comprises: a housing; the drying cylinder is mounted in the shell; two ends of the air duct are respectively communicated with the drying cylinder to jointly form a circulating air path; the machine door can open and close the opening of the drying cylinder; a cooling fan is installed in the shell and in the outer space of the drying cylinder and used for discharging damp and hot airflow in the shell to dissipate heat of parts in the shell. The invention further discloses a control method of the clothes dryer, and the control method comprises the step that when the clothes dryer executes a drying program, the upper cooling fan and / or the lower cooling fan are / is controlled to be started at the same time or respectively so as to be used for discharging damp and hot airflow in the interior of the shell and the exterior of the drying cylinder. By means of the arrangement, damp and hot airflow in the space is discharged out of the shell through heat dissipation cooling air, and therefore the remarkable technical progress that dehumidification is conducted on the inner space of the shell, and heat dissipation and cooling are conducted on clothes dryer components is achieved. In addition, the device is simple in structure, simple in method, remarkable in effect and suitable for application and popularization.

Description

Technical Field

[0001] The present invention relates to a clothes dryer in the field of clothing processing devices, and in particular to a clothes dryer, a washer-dryer and other clothes processing equipment capable of drying clothes, and also to an efficient removal device applied to the above clothes dryer. Background Art

[0002] With the improvement of people's living standards, appliances such as washing and drying machines and clothes dryers with clothing drying functions have gradually entered the homes of the general public. However, existing washing and drying machines and clothes dryers generally have an air duct connected to the outer drum. The fan in the duct draws out the hot and humid air from the outer drum, thereby reducing the humidity inside the drum and drying the clothes.

[0003] However, in existing drum-type washing and drying machines, dryers and other clothing processing equipment, when the equipment is in operation, moisture in the drying drum will leak between the shell and the drying drum. The leaked moisture will accumulate in the shell, which will cause the humidity in the shell to be too high, causing excessive condensation water to form inside the shell, which will affect the operation of the internal components of the dryer.

[0004] Therefore, how to effectively dehumidify the interior of the dryer housing has become a technical problem that urgently needs to be solved.

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

[0006] An object of the present invention is to provide a clothes dryer, in which a cooling fan is installed inside the dryer casing to achieve the purpose of dehumidifying the internal space of the casing; another object of the present invention is to provide a clothes dryer to achieve the purpose of targeted and efficient heat dissipation of the operating parts of the dryer; another object of the present invention is to provide a clothes dryer control method to achieve the purpose of efficient and stable operation of the dryer.

[0007] In order to achieve the above-mentioned object of the invention, the specific scheme adopted by the present invention is as follows:

[0008] A clothes dryer comprises a housing; a drying drum installed in the housing; an air duct, the two ends of which are respectively connected to the drying drum, together forming a circulating air path; a machine door, which can open and close the drying drum opening; a cooling fan installed in the space inside the housing and outside the drying drum, for exhausting the hot and humid air in the housing and dissipating heat from the components inside the housing.

[0009] Furthermore, an upper cooling fan is installed in the inner space of the shell at the upper part of the drying drum; and / or a lower cooling fan is installed in the inner space of the shell at the lower part of the drying drum.

[0010] Furthermore, a base plate is provided at the bottom of the shell, and a drive motor is installed on the base plate. The drive motor drives the drying drum to rotate around the axis through a pulley transmission structure; a lower cooling fan is installed on the base plate, and the lower cooling fan is arranged at the drive motor. The lower cooling fan is set toward the drive motor, and the lower cooling air blown out dissipates heat for the drive motor.

[0011] Furthermore, a top plate is installed on the top of the shell, and the air duct is fixedly installed on the top plate. The condenser and evaporator of the heat pump system are provided in the air duct, and the compressor of the heat pump system outside the air duct is fixedly installed on the top plate; an upper cooling fan outside the air duct is also installed on the top plate, the upper cooling fan is provided at the compressor, and the lower cooling fan is provided toward the compressor, and the upper cooling wind blown out dissipates heat for the compressor; preferably, a fan is also installed in the air duct to drive a circulating airflow between the air duct and the drying drum.

[0012] Furthermore, the shell is provided with a ventilation port which is respectively connected to the lower part of the drying drum and the upper part of the drying drum in the internal space of the shell; the upper cooling fan and / or the lower cooling fan are opened toward the ventilation port, and the heat dissipation airflow blown out by the fan drives the moisture in the internal space of the shell to flow out from the ventilation port, and the outside atmosphere flows into the internal space of the shell through the ventilation port.

[0013] Furthermore, an upper ventilation port is provided on the upper part of the front side plate of the shell, and the upper ventilation port is opened toward the upper cooling fan, and is used to discharge the moist air in the shell blown out by the upper cooling fan through the upper ventilation port; a lower ventilation port is provided on the lower part of the front side plate of the shell, and the lower ventilation port is opened toward the lower cooling fan, and is used to discharge the moist air in the shell blown out by the lower cooling fan through the lower ventilation port.

[0014] Furthermore, the dryer is provided with an ambient temperature sensor for obtaining the temperature value of the environment in which the dryer is located; the dryer is also provided with a load temperature sensor and / or a load humidity sensor for obtaining the temperature value and / or humidity value of the load in the drying drum.

[0015] The present invention also provides a control method applicable to any of the above-mentioned dryers, which includes: when the dryer executes the drying program, controlling the upper cooling fan and / or the lower cooling fan to turn on simultaneously or separately, so as to discharge the hot and humid airflow in the space inside the shell and outside the drying drum.

[0016] Furthermore, when the clothes dryer executes a drying program, the temperature and humidity in the drying drum are detected; when the temperature in the drying drum reaches a first temperature setting value and / or the humidity reaches a first humidity setting value, the upper cooling fan is controlled to be turned on; when the temperature in the drying drum reaches a second temperature setting value and / or the humidity reaches a second humidity setting value, the lower cooling fan is controlled to be turned on; when the temperature in the drying drum reaches a third temperature setting value and / or the humidity reaches a third humidity setting value, the upper cooling fan and the lower cooling fan are controlled to be turned on simultaneously;

[0017] Preferably, the first temperature setting value is lower than the second temperature setting value, and the second temperature setting value is lower than the third temperature setting value; the first humidity value is lower than the second humidity setting value, and the second humidity setting value is lower than the third humidity setting value.

[0018] Furthermore, the upper cooling fan and the lower cooling fan are operated in an interval start and stop mode respectively; each time the upper cooling fan is turned on, it continues to work for a set time t1; each time the lower cooling fan is turned on, it continues to work for a set time t2; the set time t1 is less than the set time t2;

[0019] Preferably, the upper cooling fan and the lower cooling fan are turned on in an alternating manner;

[0020] Preferably, the upper cooling fan and the lower cooling fan are operated in an asynchronous manner with intervals of starting and stopping.

[0021] Furthermore, when the upper cooling fan and / or the lower cooling fan are turned on, the driving motor of the clothes dryer continues to operate, driving the drying drum to rotate in a set mode;

[0022] Preferably, when the upper cooling fan and / or the lower cooling fan are turned on, the compressor of the heat pump system of the clothes dryer operates continuously, driving the refrigerant medium of the heat pump system to continuously flow, and the refrigerant medium flowing through the evaporator and the condenser exchanges heat with the air flow in the air duct, thereby dehumidifying and heating the air flow in the air duct;

[0023] Preferably, when the upper cooling fan and / or the lower cooling fan are turned on, the fan provided in the air duct of the clothes dryer runs continuously, driving the circulating airflow between the air duct and the drying drum to flow continuously.

[0024] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0025] Through the above arrangement, the heat-dissipating cooling air is used to discharge the moist and hot air in the aforementioned space out of the housing, thereby achieving the effect of dehumidifying and cooling the interior of the housing, thereby achieving a significant technological advancement in reducing humidity within the housing and lowering the operational failure rate of dryer components. Simultaneously, the heat-dissipating cooling air generated by the cooling fan can be used to dissipate heat from components installed within the housing and outside the drying drum, reducing component temperatures and thereby improving component operational stability. In particular, by disposing cooling fans at the upper and lower portions of the housing, respectively, the upper and lower cooling fans can be used to perform targeted dehumidification and heat dissipation in the upper and lower portions of the drying drum, thereby lowering the temperatures of dryer components installed in different spaces and reducing their failure rates.

[0026] In addition, the present invention has a simple structure, a concise method, and a significant effect, and is suitable for promotion and use.

[0027] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings, as part of this disclosure, are intended to provide a further understanding of the disclosure. The exemplary embodiments of the disclosure and their descriptions are intended to explain the disclosure and do not constitute undue limitations thereon. Obviously, the drawings described below are merely examples, and those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0029] Figure 1 is a structural schematic diagram of a clothes dryer according to an embodiment of the present invention;

[0030] Figure 2 is a schematic side cross-sectional structural diagram of a clothes dryer according to an embodiment of the present invention;

[0031] Figure 3 is a schematic front cross-sectional structural diagram of a clothes dryer according to an embodiment of the present invention;

[0032] Figure 4 2 is a schematic diagram of a control flow of a clothes dryer in an embodiment of the present invention.

[0033] Description of the reference numerals in the accompanying drawings:

[0034] 1. Shell; 2. Drying drum; 4. Drive motor; 5. Air duct; 6. Transparent structure; 7. Door; 8. Filter structure; 9. Dehumidification unit; 10. Fan; 11. Heating unit; 12. Bottom plate; 13. Top plate; 14. Upper cooling fan; 15. Lower cooling fan; 16. Upper ventilation port; 17. Lower ventilation port; 18. Front side panel; 20. Evaporator; 21. Condenser; 22. Compressor; 201. Drying drum mouth; 202. Drying drum wall; 203. Drying drum bottom.

[0035] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0037] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the present invention.

[0038] In the description of the present invention, it should be noted that, unless otherwise specified or limited, the terms "mounted" and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0039] like Figures 1 to 4 As shown, an embodiment of the present invention introduces a clothes dryer, comprising a housing 1, within which a drying drum 2 is disposed. The drying drum 2 comprises a cylindrical drying drum wall 202, the axis of which is arranged horizontally. A drying drum opening 201 is provided at the front end of the drying drum wall 202, and a drying drum bottom 203 is provided at the rear end. The drying drum bottom 203 blocks the rear end of the cylindrical drying drum wall 202 and the drying drum opening 201, thereby opening the cylindrical drying drum opening and allowing clothes to be taken in and out of the drying drum. Furthermore, an outwardly openable door 7 is mounted at the front end of the housing 1 of the clothes dryer. The door 7 corresponds to the clothing loading port provided on the housing 1, and is used to close or open the drying drum opening 201 by opening and closing the door 7.

[0040] In an embodiment of the present invention, a drive motor 4 is installed in the housing 1 of the dryer, and the drive motor shaft of the drive motor 4 drives the drying drum 2 to rotate around the axis directly or via a belt, so as to achieve the effect of driving the drying drum 2 to rotate around the axis and thus stirring the clothes in the drum; preferably, the drive motor 4 is generally connected to the drying drum wall 202 of the drying drum 2 via a pulley structure, and is used to drive the drying drum wall 202 of the drying drum 2 to rotate around the axis, so as to utilize the rotation action of the drum wall around the axis to stir the clothes and airflow in the drum, thereby improving the drying rate and drying uniformity of the clothes in the drum.

[0041] In the embodiment of the present invention, the clothes dryer further includes a drying system for drying the load in the drying drum 2 to obtain dry clothes, etc., thereby achieving the effect of improving the quality of life of the user.

[0042] In an embodiment of the present invention, the drying system includes an air duct 5 connected to the drying drum 2 at both ends to form a circulating air path; a fan 10 is installed in the air duct 5, so that a circulating airflow flowing in a single direction is formed in the circulating air path formed by the drying drum 2 and the air duct 5; a dehumidification unit 9 is also installed in the air duct 5 to dehumidify the circulating airflow, thereby reducing the humidity of the airflow in the circulating air path and drying the load in the drying drum 2; at the same time, in an embodiment of the present invention, in order to increase the drying rate of the load in the drying drum 2 and accelerate the vaporization of water adsorbed in the load, a heating unit 11 can be provided in the air duct 5 to heat the circulating airflow, thereby increasing the temperature in the outer drum 2, heating the load in the drying drum 2 and accelerating the drying rate. Preferably, in an embodiment of the present invention, the dehumidification unit 9 and the heating unit 11 are respectively composed of an evaporator 20 and a condenser 21 of a heat pump system, so as to utilize the heat exchange between the circulating refrigerant medium and the flowing airflow to achieve the effect of dehumidifying and heating the drying drum 2.

[0043] In an embodiment of the present invention, when the clothing processing device executes a drying program, the drying system is controlled to start, and the fan 10 is used to form a circulating airflow in the circulating air path formed by the air duct 5 and the outer drum 2. The circulating airflow fully contacts the load in the drum when flowing through the drying drum 2, and after carrying the moisture in the load, it becomes moist and hot drying air, flows out of the drying drum 2 and into the air duct 5; after the moist and hot drying air flows into the air duct 5, it contacts the dehumidification unit 9 in the air duct 5, so that the moist and hot drying airflow is converted into a dry drying airflow and then flows back into the outer drum 2, and the circulation continues in this way. Preferably, in order to increase the drying rate, a heating unit 11 can be added to the air duct 5, so that the dry drying airflow after being dehumidified by the dehumidification unit 9 contacts the heating unit 11, is heated, and forms a high-temperature dry drying airflow, which then flows back into the outer drum 2 through the air duct 5.

[0044] In an embodiment of the present invention, the drying system can be any existing device capable of dehumidifying and drying clothing, such as a heat pump system. The heat pump system comprises a compressor 22, an evaporator 20, a throttling device, and a condenser 21, which are connected end-to-end to form a circulation flow path for circulating a cooling medium. The condenser 21 and the evaporator 20 are installed in the air duct 5 of the clothing processing device, arranged in sequence along the flow direction of the circulating airflow, so that the airflow flowing out of the drying drum 2 first undergoes heat exchange with the evaporator 20 to condense and separate the water vapor contained therein, then undergoes heat exchange with the condenser 21 to heat it to form a high-temperature dry airflow, and finally flows back into the drying drum 2 to reduce the humidity and increase the temperature in the drying drum 2, thereby achieving the effect of drying the load in the drying drum 2. Thus, the evaporator 20 of the heat pump system constitutes the dehumidification unit 9, and the condenser 21 constitutes the heating unit 11, thereby achieving the effect of drying the load in the drying drum 2.

[0045] In the embodiment of the present invention, a cooling fan is also installed in the shell 1. The cooling fan blows heat-dissipating cooling air to the space inside the shell 1 and outside the drying drum 2. The heat-dissipating cooling air is used to discharge the hot and humid air in the above space out of the shell 1, so as to achieve the effect of dehumidifying and cooling the internal space of the shell 1, thereby achieving a significant technological progress in reducing the humidity inside the shell 1 and reducing the operating failure rate of the dryer components; at the same time, the heat-dissipating cooling air generated by the cooling fan can also be used to dissipate heat for the components installed inside the shell 1 and outside the drying drum 2, thereby reducing the temperature of the components and improving the operating stability of the components.

[0046] At the same time, in order to achieve the effect of heat dissipation for different components in the upper and lower spaces of the drying drum 2 and dehumidification for different spaces, the following settings are made:

[0047] An upper cooling fan 14 is installed in the internal space of the shell 1 at the upper part of the drying drum 2; and / or, a lower cooling fan 15 is installed in the internal space of the shell 1 at the lower part of the drying drum 2, so that the upper cooling fan 14 and the lower cooling fan 15 are used respectively to perform targeted dehumidification and heat dissipation on the upper and lower parts of the drying drum 2, thereby reducing the temperature of the dryer components installed in different spaces and reducing their failure rate.

[0048] In an embodiment of the present invention, a base plate 12 is provided at the bottom of the shell 1, and a drive motor 4 is installed on the base plate 12. The drive motor 4 drives the drying drum 2 to rotate around the axis through a pulley transmission structure; a lower cooling fan 15 is installed on the base plate 12, and the lower cooling fan 15 is arranged at the drive motor 4. The lower cooling fan 15 is set toward the drive motor 4, and the lower cooling air blown out performs heat dissipation treatment on the drive motor 4.

[0049] In the embodiment of the present invention, a top plate 13 is installed on the top of the housing 1, and the air duct 5 is fixedly installed on the top plate 13. The condenser 21 and evaporator 20 of the heat pump system are arranged in the air duct 5, and the compressor 22 of the heat pump system outside the air duct 5 is fixedly installed on the top plate 13. An upper cooling fan 14 outside the air duct 5 is also installed on the top plate 13. The upper cooling fan 14 is arranged at the compressor 22 and is arranged toward the compressor 22. The upper cooling air blown out by the upper cooling fan 14 dissipates heat from the compressor 22. Preferably, a fan 10 is also installed in the air duct 5 to drive a circulating airflow between the air duct 5 and the drying drum 2. At the same time, the above-mentioned top plate 13 can be a part of the housing 1, the top part; or the above-mentioned top plate 13 can be set as an independent upper support member installed in the top space of the housing, and the upper support member is fixedly installed on the housing 1.

[0050] In an embodiment of the present invention, the shell 1 is provided with a ventilation port which is respectively connected to the lower part of the drying drum 2 and the upper part of the drying drum 2 in the internal space of the shell 1; the upper cooling fan 14 and / or the lower cooling fan 15 are opened toward the ventilation port, and the heat dissipation airflow blown out by the cooling fan drives the moisture in the internal space of the shell 1 to flow out from the ventilation port, and the external atmosphere flows into the internal space of the shell 1 through the ventilation port.

[0051] In this embodiment of the present invention, an upper ventilation port 16 is provided on the upper portion of the front side panel 18 of the housing 1. The upper ventilation port 16 is opened toward the upper cooling fan 14 and is used to discharge the moist air in the housing 1 blown out by the upper cooling fan 14 through the upper ventilation port 16. A lower ventilation port 17 is provided on the lower portion of the front side panel 18 of the housing 1. The lower ventilation port 17 is opened toward the lower cooling fan 15 and is used to discharge the moist air in the housing 1 blown out by the lower cooling fan 15 through the lower ventilation port 17. Preferably, to prevent foreign matter from entering the interior of the housing 1 through the ventilation port, interception filters or shielding covers are provided at the upper and lower ventilation ports, respectively, to filter and shield the ventilation ports.

[0052] In an embodiment of the present invention, the dryer is provided with an ambient temperature sensor for obtaining the temperature value of the environment in which the dryer is located; the dryer is also provided with a load temperature sensor and / or a load humidity sensor for obtaining the temperature value and / or humidity value of the load in the drying drum 2; preferably, temperature sensors can also be provided at the drive motor 4 and the compressor 22 respectively to perform real-time detection of the temperature of the drive motor 4 and the compressor 22, and the above-mentioned detection values ​​are used to perform targeted opening and closing control of the upper and lower cooling fans to improve the control accuracy (not shown in the accompanying drawings).

[0053] like Figures 1 to 4 As shown, an embodiment of the present invention also introduces a control method applied to any of the above-mentioned dryers, which includes: when the dryer executes the drying program, controlling the upper cooling fan and / or the lower cooling fan to turn on simultaneously or separately, so as to discharge the hot and humid airflow in the space inside the shell and outside the drying drum.

[0054] like Figure 4 As shown, in the embodiment of the present invention, when the clothes dryer performs the drying process, the temperature and humidity in the drying drum are detected;

[0055] When the temperature in the drying drum reaches a first temperature setting value and / or the humidity reaches a first humidity setting value, the cooling fan is controlled to turn on;

[0056] When the temperature in the drying drum reaches a second temperature setting value, and / or the humidity reaches a second humidity setting value, the cooling fan is controlled to turn on;

[0057] When the temperature in the drying drum reaches a third temperature setting value, and / or the humidity reaches a third humidity setting value, controlling the upper cooling fan and the lower cooling fan to turn on simultaneously;

[0058] Preferably, the first temperature setting value is lower than the second temperature setting value, and the second temperature setting value is lower than the third temperature setting value;

[0059] The first humidity value is lower than the second humidity setting value, and the second humidity setting value is lower than the third humidity setting value.

[0060] In an embodiment of the present invention, the first set temperature, the second set temperature, the third set temperature, and the first set humidity, the second set humidity, and the third set humidity are respectively preset values ​​in the dryer system; the above-mentioned set values ​​can correspond to different preset values ​​according to different dryer models and different working programs executed by the dryer.

[0061] Preferably, the first set temperature is not greater than half of the maximum set temperature value of the drying program executed by the dryer, the second set temperature is not greater than three quarters of the maximum set temperature value of the drying program executed by the dryer, and the third set temperature is not greater than the maximum set temperature value of the drying program executed by the dryer.

[0062] Preferably, the set humidity is the relative humidity value of the water vapor contained in the hot and humid air flow in the cylinder; the above-mentioned first set temperature is not greater than 70%, the second set temperature is not greater than 80%, and the third set temperature is not greater than 90%.

[0063] In the embodiment of the present invention, the specific operation mode of the upper cooling fan and the lower cooling fan can be continuous operation, or can be intermittent on-off operation, etc. Preferably, the specific operation mode of the upper cooling fan and the lower cooling fan can be as follows:

[0064] The upper cooling fan and the lower cooling fan are operated in an interval start and stop mode respectively;

[0065] Each time the upper cooling fan is turned on, it will continue to work for the set time t1;

[0066] Each time the lower cooling fan is turned on, it will continue to work for the set time t2;

[0067] The set time length t1 is shorter than the set time length t2.

[0068] In an embodiment of the present invention, the upper cooling fan and the lower cooling fan can be turned on in an alternating manner so that the upper cooling fan and the lower cooling fan do not run at the same time, thereby reducing energy consumption; the upper cooling fan and the lower cooling fan can also be operated in an asynchronous manner with intermittent start-up and stop modes, so that the upper cooling fan and the lower cooling fan have periods of simultaneous operation, so as to utilize the upper cooling fan and the lower cooling fan running at the same time to efficiently discharge the hot and humid air flow inside the shell, and then the upper cooling fan and the lower cooling fan can be controlled to run independently or simultaneously according to different operating modes of the dryer, so as to ensure effective dehumidification and cooling of the upper and lower spaces in the shell while minimizing energy consumption.

[0069] In an embodiment of the present invention, when the upper cooling fan and / or the lower cooling fan are turned on and running, the drive motor of the dryer continues to run, driving the drying drum to rotate in a set mode, so as to utilize the rotating airflow generated by the rotating drying drum to assist in ventilation of the upper and lower parts of the drying drum, thereby improving the dehumidification and cooling effects of the upper cooling fan and / or the lower cooling fan.

[0070] In an embodiment of the present invention, when the upper cooling fan and / or the lower cooling fan are turned on and running, the compressor of the heat pump system of the dryer continues to work, driving the refrigerant medium of the heat pump system to flow continuously. The refrigerant medium flowing through the evaporator and the condenser exchanges heat with the air flow in the air duct, dehumidifies and heats the air flow in the air duct, and utilizes the heat dissipation ventilation airflow generated by the upper cooling fan and / or the lower cooling fan to efficiently dissipate heat from the running compressor, thereby improving the drying efficiency of the dryer.

[0071] In an embodiment of the present invention, when the upper cooling fan and / or the lower cooling fan are turned on, the fan provided in the air duct of the dryer continues to operate, driving the circulating airflow between the air duct and the drying drum to flow continuously, so as to further improve the drying efficiency of the dryer and shorten the drying time.

[0072] In order to remove lint and the like from the circulating air flow flowing in the drying drum 2 and the air duct 5, a filtering structure 8 needs to be installed on the dryer; the circulating air flow between the drying drum 2 and the air duct 5 is passed through the filtering structure 8 in sequence, and the filter elements such as the filter screen provided on the filtering structure 8 are used to intercept and remove foreign matter such as lint in the circulating air flow, thereby effectively preventing lint and the like from flowing turbulently in the drum during the drying process, and preventing hair and lint from being caught on clothes after drying.

[0073] like Figure 1As shown, in the embodiment of the present invention, the filtering structure 8 is installed on the door 7 of the dryer, so that the user can disassemble and assemble the filtering structure 8 installed on the door after opening the door 7 of the dryer, which greatly facilitates the user's cleaning and maintenance of the filtering structure 8; at the same time, a transparent structure 6 is provided on the door 7 of the dryer, and the transparent structure 6 and the filtering structure 8 are arranged in an interlaced manner, so that the user can use the transparent structure 6 to observe the inside of the drying drum 2 and understand the internal working conditions of the drying drum 2 in a timely manner.

[0074] In the embodiment of the present invention, the drying drum mouth 201 of the drying drum 2 is opened forward and the drum axis is arranged horizontally; only a vibration gap of the drying drum 2 is set between the bottom of the drying drum 2 and the bottom of the dryer housing 1, which is used to set the drying drum 2 and the bottom of the dryer housing 1 as close as possible, so that the setting height of the drying drum 2 in the dryer is reduced as much as possible, and the height of the door 7 of the dryer stacked on the washing machine or hung as low as possible, so that the user can open and close the dryer door 7 more conveniently.

[0075] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with this patent can make slight changes or modifications to equivalent embodiments using the above technical content without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the solution of the present invention.

Claims

1. A clothes dryer comprising: case; The drying cylinder is installed in the shell; The air duct is connected to the drying drum at both ends to form a circulating air path; The machine door can open and close the drying drum; Its characteristics are: Cooling fans are installed inside the shell and in the space outside the drying drum to discharge the hot and humid air in the shell and dissipate heat from the components inside the shell.

2. The clothes dryer according to claim 1, characterized in that: An upper cooling fan is installed in the inner space of the shell above the drying drum; And / or, a lower cooling fan is installed in the inner space of the shell at the lower part of the drying drum.

3. The clothes dryer according to claim 2, characterized in that: A bottom plate is provided at the bottom of the shell, on which a driving motor is installed, which drives the drying drum to rotate around the axis through a pulley transmission structure; A lower cooling fan is installed on the bottom plate. The lower cooling fan is arranged at the drive motor and is arranged toward the drive motor. The lower cooling air blown out by the fan dissipates heat for the drive motor.

4. The clothes dryer according to claim 2, characterized in that: A top plate is installed on the top of the shell, and an air duct is fixedly installed on the top plate. A condenser and an evaporator of the heat pump system are arranged in the air duct, and a compressor of the heat pump system outside the air duct is fixedly installed on the top plate. An upper cooling fan outside the air duct is also installed on the top plate. The upper cooling fan is set at the compressor, and the lower cooling fan is set towards the compressor. The upper cooling air blown out is used to dissipate heat for the compressor. Preferably, a fan is also installed in the air duct to drive a circulating airflow between the air duct and the drying drum.

5. A clothes dryer according to any one of claims 1 to 4, characterized in that: The shell is provided with ventilation ports which are respectively connected with the lower part of the drying drum and the upper part of the drying drum in the internal space of the shell; The upper cooling fan and / or the lower cooling fan are opened toward the ventilation port, and the heat dissipation airflow blown out by the fan drives the moisture in the inner space of the shell to flow out from the ventilation port, and the outside atmosphere flows into the inner space of the shell through the ventilation port.

6. The clothes dryer according to claim 5, characterized in that: An upper ventilation port is provided on the upper portion of the front side panel of the housing, and is opened toward the upper cooling fan, for discharging the humid air in the housing blown out by the upper cooling fan through the upper ventilation port; A lower ventilation port is provided at the lower portion of the front side plate of the shell, and the lower ventilation port is opened toward the lower cooling fan and is used to discharge the humid air in the shell blown out by the lower cooling fan through the lower ventilation port.

7. A clothes dryer according to any one of claims 1 to 6, characterized in that: The clothes dryer is provided with an ambient temperature sensor for obtaining the temperature value of the environment in which the clothes dryer is located; The clothes dryer is further provided with a load temperature sensor and / or a load humidity sensor for obtaining the temperature value and / or humidity value of the load in the drying drum.

8. A control method for the clothes dryer according to any one of claims 1 to 7, characterized in that: When the clothes dryer executes the drying program, the upper cooling fan and / or the lower cooling fan are controlled to be turned on simultaneously or separately to discharge the hot and humid airflow in the space inside the shell and outside the drying drum.

9. The control method for a clothes dryer according to claim 8, characterized in that: When the dryer is performing the drying process, the temperature and humidity in the drying drum are detected; When the temperature in the drying drum reaches a first temperature setting value and / or the humidity reaches a first humidity setting value, the cooling fan is controlled to turn on; When the temperature in the drying drum reaches a second temperature setting value, and / or the humidity reaches a second humidity setting value, the cooling fan is controlled to turn on; When the temperature in the drying drum reaches a third temperature setting value and / or the humidity reaches a third humidity setting value, controlling the upper cooling fan and the lower cooling fan to be turned on simultaneously; Preferably, the first temperature setting value is lower than the second temperature setting value, and the second temperature setting value is lower than the third temperature setting value; The first humidity value is lower than the second humidity setting value, and the second humidity setting value is lower than the third humidity setting value.

10. The control method for a clothes dryer according to claim 8 or 9, characterized in that: The upper cooling fan and the lower cooling fan are operated in an interval start and stop mode respectively; Each time the upper cooling fan is turned on, it will continue to work for the set time t1; Each time the lower cooling fan is turned on, it will continue to work for the set time t2; The set time t1 is less than the set time t2; Preferably, the upper cooling fan and the lower cooling fan are turned on in an alternating manner; Preferably, the upper cooling fan and the lower cooling fan are operated in an asynchronous manner with intervals of starting and stopping.

11. The control method for a clothes dryer according to claim 10, characterized in that: When the upper cooling fan and / or the lower cooling fan are turned on, the driving motor of the clothes dryer continues to run, driving the drying drum to rotate in a set mode; Preferably, when the upper cooling fan and / or the lower cooling fan are turned on, the compressor of the heat pump system of the clothes dryer operates continuously, driving the refrigerant medium of the heat pump system to continuously flow, and the refrigerant medium flowing through the evaporator and the condenser exchanges heat with the air flow in the air duct, thereby dehumidifying and heating the air flow in the air duct; Preferably, when the upper cooling fan and / or the lower cooling fan are turned on, the fan provided in the air duct of the clothes dryer runs continuously, driving the circulating airflow between the air duct and the drying drum to flow continuously.

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