Clothes dryer

Abstract

The embodiment of the invention provides a clothes dryer. The clothes dryer comprises a box body; the clothes cylinder is arranged in the box body; the air duct is arranged in a space between the outer part of the clothes cylinder and the box body; the heat pump system comprises a compressor, a condenser and an evaporator which are communicated with one another, and the evaporator and the condenser are sequentially arranged in the air duct in the flow direction of air; a cavity is formed in the shell, at least part of the compressor is located in the cavity, a first air inlet and a first air outlet which communicate with the cavity are formed in the shell, the first air inlet communicates with the position, located between the evaporator and the condenser, in the air flue through a first connecting pipe, and the first air outlet communicates with the position, located between the evaporator and the condenser, in the air flue through a second connecting pipe; the first air outlet communicates with the position, located at the downstream position of the condenser, in the air flue through a second connecting pipe. The production cost of the clothes dryer can be effectively reduced, and a large amount of heat energy generated by the compressor can be effectively utilized.

Description

Technical Field

[0001] This application relates to the technical field of clothes dryers, and more particularly to a clothes dryer. Background Art

[0002] A clothes dryer is a cleaning household appliance that uses a heating wire or a heat pump system to instantaneously evaporate and dry the moisture in the washed clothes. During the operation of the clothes dryer, the internal compressor will continuously release heat energy, and excessive release of heat energy is likely to cause the temperature of the compressor to rise too high, which may further lead to the shutdown of the compressor.

[0003] Currently, in the industry, in order to prevent the temperature of the compressor from rising too high and causing the compressor to shut down, a small fan is usually added to specifically dissipate heat for the compressor. How to provide other compressor heat dissipation methods in a clothes dryer is a technical problem that those skilled in the art urgently need to solve. Summary of the Invention

[0004] To solve the above technical problems, an embodiment of this application provides a clothes dryer.

[0005] According to one aspect of the embodiments of this application, a clothes dryer provided by the embodiments of this application includes: a cabinet; a drum disposed within the cabinet; an air duct disposed in the space between the outside of the drum and the cabinet and communicating with the drum for introducing air into the drum; a heat pump system including a compressor, a condenser, and an evaporator connected in communication, the evaporator and the condenser being sequentially disposed in the air duct along the air flow direction, the compressor being disposed within the cabinet and outside the air duct; a housing forming a cavity, at least a part of the compressor being located within the cavity, the housing having a first air inlet and a first air outlet communicating with the cavity, the first air inlet being connected through a first connecting pipe to a position between the evaporator and the condenser in the air duct, the first air outlet being connected through a second connecting pipe to a position downstream of the condenser in the air duct, and the air cooled by the evaporator enters the cavity through the first air inlet, flows over the surface of the compressor, and then flows out of the cavity through the first air outlet into the air duct.

[0006] In an exemplary embodiment of the present disclosure, the first air inlet and the first air outlet are respectively disposed on two opposite side walls of the housing, and the first air inlet and the first air outlet are disposed in a staggered manner.

[0007] In an exemplary embodiment of the present disclosure, the compressor is connected to the evaporator and the condenser through a first capillary tube and a second capillary tube respectively; one end of the housing is open, and the opening communicates with the cavity so that the housing covers the compressor, and the part of the compressor connected to the first capillary tube and the second capillary tube is located outside the opening.

[0008] In an exemplary embodiment of the present disclosure, the compressor is communicated with the evaporator and the condenser through a first capillary tube and a second capillary tube respectively; a first through hole and a second through hole are formed in the housing, and the first capillary tube and the second capillary tube extend out of the cavity from the first through hole and the second through hole respectively.

[0009] In an exemplary embodiment of the present disclosure, an impeller is arranged in the air duct, and the impeller is used to drive air to flow in the air duct and the drum.

[0010] In an exemplary embodiment of the present disclosure, the impeller is arranged downstream of the condenser, and the second connecting pipe is communicated with a position between the impeller and the condenser in the air duct.

[0011] In an exemplary embodiment of the present disclosure, the dryer further includes a motor, the motor is arranged in the box body and outside the air duct, and a motor shaft of the motor is connected to the impeller to drive the impeller to rotate.

[0012] In an exemplary embodiment of the present disclosure, the motor is arranged in the cavity, and a motor shaft hole for the motor shaft to pass through is formed in the housing.

[0013] In an exemplary embodiment of the present disclosure, the dryer further includes a motor for driving the impeller and a motor cover. The motor cover forms a cavity, at least part of the motor is arranged in the cavity, a second air inlet and a second air outlet communicated with the cavity are formed in the motor cover, the second air inlet is communicated with a position between the evaporator and the condenser in the air duct through a third connecting pipe, the second air outlet is communicated with a position downstream of the condenser in the air duct through a fourth connecting pipe, and the air cooled by the evaporator enters the cavity from the second air inlet, flows through the surface of the motor, and then flows out of the second air outlet to the air duct.

[0014] In an exemplary embodiment of the present disclosure, the dryer further includes a water storage tank arranged at the bottom of the air duct, and the water storage tank is communicated with the evaporator and is used for collecting the condensed water generated by the condensed gas of the evaporator.

[0015] Advantageous effects:

[0016] In the present application, by providing a first air inlet and a first air outlet on the housing, at least part of the compressor is disposed in the cavity of the housing, so that the air cooled by the evaporator enters the cavity from the first air inlet, flows through the surface of the compressor, exchanges heat with the compressor to dissipate heat for the compressor, and the air after heat exchange flows out from the first air outlet, so that the heat generated by the compressor is converted into heat for heating the clothes in the drum, thereby effectively utilizing the heat generated by the compressor.

[0017] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application. Obviously, the accompanying drawings in the following description are only some embodiments of the present application, and those of ordinary skill in the art can obtain other drawings according to these drawings without creative efforts. In the drawings:

[0019] Figure 1 is a schematic structural view of a dryer provided by an exemplary embodiment of the present application.

[0020] Figure 2 is Figure 1 a partial enlarged view of part A in

[0021] Figure 3 is a schematic diagram of the internal air flow direction of a dryer provided by an exemplary embodiment of the present application.

[0022] Figure 4 is a schematic structural view of the compressor and the housing of a dryer provided by an exemplary embodiment of the present application.

[0023] Figure 5 is a schematic structural view of the motor and the motor cover of a dryer provided by an exemplary embodiment of the present application.

[0024] REFERENCE MARKS:

[0025] Cabinet 1, drum 2, air duct 3, front air duct 31, bottom air duct 32, rear air duct 33, evaporator 4, condenser 5, compressor 6, housing 7, first air inlet 71, first air outlet 72, cavity 73, first connecting pipe 74, second connecting pipe 75, first capillary tube 76, second capillary tube 77, impeller 8, motor 9, motor cover 91, third connecting pipe 92, fourth connecting pipe 93, motor shaft 94, water storage tank 10, door body 11, belt 12. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] Exemplary embodiments will be described in detail herein, and examples thereof are shown in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of apparatuses and methods consistent with some aspects of the present application as detailed in the appended claims.

[0027] The block diagrams shown in the accompanying drawings are only functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities can be implemented in software form, or in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices.

[0028] The flowcharts shown in the accompanying drawings are only illustrative and do not necessarily include all content and operations / steps, nor do they necessarily have to be executed in the order described. For example, some operations / steps can be decomposed, while some operations / steps can be combined or partially combined, so the actual execution order may change according to the actual situation.

[0029] It should also be noted that: "a plurality of" mentioned in the present application means two or more. The " / or" describes the association relationship of associated objects and indicates that three relationships can exist. For example, A / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after.

[0030] The terms "first", "second", "third", "fourth", etc. in the description and claims of the present application and the accompanying drawings are used to distinguish different objects, rather than to describe a specific order. The terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or units inherent to these processes, methods, products, or devices.

[0031] A dryer is a cleaning household appliance that uses a heating wire or a heat pump system to instantly evaporate and dry the moisture in the washed clothes. Dryers can be mainly divided into household dryers and industrial dryers. The drying capacity of household dryers is generally about 6 kilograms, and the power is between 1 and 2 kilowatts. Household dryers are generally warm air dryers. A warm air dryer uses high-temperature air flow to pass over the surface of the clothes to be dried, heats the clothes, and takes away the evaporated moisture to quickly dry the clothes. Industrial dryers are generally drum dryers. Relying on the suction of a blower, the air is heated by a heat exchanger and then passes through the rotating inner cylinder to continuously turn over the objects to be dried for heat exchange, so that the moisture contained in the fabric is heated and vaporized and discharged outside the machine to achieve the purpose of drying clothes in a short time.

[0032] During the operation of the dryer, the internal compressor will continuously release heat energy. If too much heat energy is released, it is very likely to cause the temperature of the compressor to rise too high, which may lead to the shutdown of the compressor.

[0033] At present, in order to avoid the shutdown of the compressor caused by the too high temperature of the compressor in the industry, usually a small blower is added to specifically dissipate heat for the compressor. How to provide other compressor heat dissipation methods in the dryer is a technical problem that needs to be solved urgently by those skilled in the art.

[0034] To solve the above technical problems, this application proposes a dryer, Figure 1 which is a schematic structural diagram of the dryer provided by an exemplary embodiment of this application. Figure 2 is Figure 1 The partial enlarged view at position A in. As Figure 1 and Figure 2 shown, the dryer includes a box body 1, a belt 12, an air duct 3, a drum 2, a motor 9, an impeller 8, a water storage tank 10, a condenser 5, an evaporator 4, a housing 7, and a compressor 6.

[0035] It should be noted that in actual applications, the structure of the dryer can also be adjusted according to actual needs. For example, corresponding components can be added / reduced / replaced on the Figure 1 shown dryer structure. Here, the structure of the dryer is not limited only to the Figure 1 shown structure.

[0036] For ease of understanding, the direction facing the user of the dryer is defined as the front side direction of the dryer, and the direction facing away from the user of the dryer is defined as the rear side direction of the dryer.

[0037] Next, each part of the dryer will be introduced one by one.

[0038] The housing 1 serves as the external housing 7 of the dryer, and is used to fix and protect the internal components. The housing 1 is usually made of metal or plastic; a control panel is usually provided on the housing 1, and buttons, knobs or touch screens are arranged on the control panel for the user to select drying programs, temperatures, rotation speeds and make other settings on the control panel. The housing 1 can be set in the shape of a hollow cuboid, or can be set in the shape of a hollow cylinder. Of course, it is not limited to the above shapes.

[0039] In this embodiment, the dryer further includes a rotating system, and the rotating system specifically includes a belt 12, a drum 2 and a motor 9. Among them, the drum 2 is arranged in the housing 1 and is used for drying clothes. The drum 2 has a cavity with an opening at the front side, and clothes are put into the cavity through a clothes inlet opened on the drum 2 for drying. Correspondingly, a door 11 is provided on the housing 1, and the door 11 is arranged corresponding to the clothes inlet to close the clothes inlet of the drum 2 when washing or drying clothes, so that the cavity is a sealed space when washing clothes, and the clothes can better contact with hot air during the drying process, which helps to improve the drying effect on the clothes. A door glass can also be arranged on the door 11 to facilitate observing the laundry or drying process. The drum 2 is usually made of stainless steel or plastic.

[0040] In this embodiment, the motor 9 is arranged in the housing 1. The motor 9 has a motor shaft 94, and the power of the motor 9 is transmitted through the motor shaft 94. The belt 12 is respectively connected to the drum 2 and the motor shaft 94, so that the belt 12 can be driven to move by the drive of the motor 9, and then the drum 2 can be driven to rotate, so that the clothes tumble up and down in the drum 2, thereby accelerating the drying speed. It can be understood that the belt 12 is connected to the rear end of the drum 2, and a corresponding transmission mechanism for connecting with the belt 12 is provided on the rear end of the drum 2.

[0041] Among them, the motor 9 can adjust the rotation speed, rotation angle, rotation direction and rotation time of the drum 2 through a control circuit to adapt to different drying programs and user requirements. Exemplarily, for heavy clothes, the motor 9 can be controlled to adopt a lower rotation speed to prevent the clothes from being overly worn, and for light clothes, the motor 9 can be controlled to adopt a higher rotation speed to improve the drying rate of the clothes; and in order to avoid the clothes from forming a group and affecting the drying effect on the clothes, the rotation direction of the drum 2 can also be changed through the motor 9, for example, alternately using clockwise and counterclockwise rotations to ensure more uniform drying of the clothes.

[0042] Figure 3 It is a schematic diagram of the internal air flow direction of the dryer provided by an exemplary embodiment of the present application.

[0043] See Figure 3, in this embodiment, the air duct 3 is connected to the drum 2 and is used to introduce air into the drum 2. It can be understood that, in order to dry the clothes, the air duct 3 introduces dry hot air into the drum 2. At the same time, after the dry hot air dries the clothes, it will carry away the moisture on the clothes and become low-temperature and humid air. Therefore, the air duct 3 in this embodiment can be understood as a section of closed ventilation duct, including a bottom air duct 32 disposed in the space between the bottom of the drum 2 and the bottom of the cabinet 1, a rear air duct 33 disposed at the rear side of the drum 2, and a front air duct 31 disposed at the front side of the drum 2. The front air duct 31, the bottom air duct 32, and the rear air duct 33 are connected in sequence. The front air duct 31 is connected to the air outlet formed on the front end of the drum 2, and the rear air duct 33 is also connected to the air inlet formed on the rear end of the drum 2. In this way, the drum 2 and the air duct 3 can form an air circulation system, and the air circulates in the drum 2 and the air duct 3 to continuously carry away the moisture on the clothes, thereby continuously drying the clothes. It can be understood that the air duct 3 can be formed by covering a base and a cover plate. For example, one end of the base is open, and the cover plate is covered on the open end of the base to form a closed air duct 3.

[0044] For example, in this embodiment, during drying, the low-temperature and humid gas in the drum 2 enters the front air duct 31 from the air outlet, and enters the bottom air duct 32 from the front air duct 31. After being dried in the bottom air duct 32, it becomes high-temperature and dry gas and then flows back into the drum 2 through the rear air duct 33 to dry the clothes in the cavity of the drum 2. This direction is the flow direction of the air in the air duct 3. The bottom air duct 32 is disposed at the bottom of the cabinet 1 and can extend along the front-rear direction of the cabinet 1, so that the overall utilization length of the air duct 3 is longer, the distance for the air to exchange heat and rise in temperature in the air duct 3 is longer, and the drying efficiency of the dryer is higher.

[0045] In this embodiment, the heat pump system includes a compressor 6, a condenser 5, and an evaporator 4 that are connected in communication. The evaporator 4 and the condenser 5 are sequentially disposed in the air duct 3 along the air flow direction. Specifically, for the convenience of installing the evaporator 4 and the condenser 5, the evaporator 4 and the condenser 5 are disposed in the bottom air duct 32. The bottom air duct 32 has a larger space, which is beneficial for installation. The compressor 6 is disposed in the cabinet 1 and outside the air duct 3, such as it can be disposed on the outer top surface of the bottom air duct 32. Both the evaporator 4 and the condenser 5 belong to a kind of heat exchanger, which can convert a liquid into a gas, thereby absorbing a large amount of heat and transferring it to the air near the evaporator 4, making the surface of the evaporator 4 in a low-temperature state. The condenser 5 can convert a gas or steam into a liquid, thereby releasing a large amount of heat and transferring it to the air near the condenser 5, making the surface of the condenser 5 in a high-temperature state. The gas evaporated from the clothes in the drum 2 at a high temperature forms a high-temperature and high-humidity circulating gas. When the circulating gas passes through the evaporator 4 with a low-temperature surface, condensed water will be precipitated, thereby taking away the moisture in the air passing through the evaporator 4. The air then flows through the condenser 5 and is heated and raised in temperature by the condenser 5 to become high-temperature and dry gas, and then returns to the drum 2 to dry the clothes, thus forming a cycle.

[0046] In this embodiment, the dryer further includes a water storage tank 10 disposed at the bottom of the air duct 3. The water storage tank 10 is communicated with the evaporator 4 and is used for collecting the condensed water generated by the condensed gas of the evaporator 4. Specifically, the water storage tank 10 can be disposed at the bottom of the bottom air duct 32. An opening is formed at a position between the evaporator 4 and the condenser 5 in the bottom air duct 32, and the opening is communicated with the water storage tank 10, so that the condensed water flowing down from the evaporator 4 is collected into the water storage tank 10.

[0047] In other embodiments, the water storage tank 10 can also be disposed at the bottom of the evaporator 4. It is located in the bottom air duct 32 and directly receives the condensed water flowing down from the evaporator 4.

[0048] In this embodiment, the compressor 6 is communicated with the evaporator 4 and the condenser 5 respectively through a first capillary tube 76 and a second capillary tube 77. The evaporator 4 and the condenser 5 can be communicated through a third capillary tube. The refrigerant flows in the first capillary tube 76, the second capillary tube 77 and the third capillary tube. The compressor 6 does work on the refrigerant to convert electrical energy into the heat energy of the refrigerant, and this heat energy is transferred to the air in the bottom air duct 32 through heat exchange.

[0049] During the operation of the compressor 6, a large amount of heat will be generated by itself. To avoid overheating of the compressor 6 and to be able to utilize this part of the heat. In this embodiment, the housing 7 forms a cavity 73, and at least a part of the compressor 6 is located in the cavity 73. The housing 7 is provided with a first air inlet 71 and a first air outlet 72 that are communicated with the cavity 73. The first air inlet 71 is connected to a position between the evaporator 4 and the condenser 5 in the air duct 3 through a first connecting pipe 74, and the first air outlet 72 is connected to a position downstream of the condenser 5 in the air duct 3 through a second connecting pipe 75. After the air cooled by the evaporator 4 enters the cavity 73 from the first air inlet 71 and flows through the surface of the compressor 6, it flows out from the first air outlet 72 to the air duct 3. Thus, the low-temperature air exchanges heat with the compressor 6 to dissipate heat for the compressor 6, and the air after heat exchange flows out from the first air outlet 72, so that the heat generated by the compressor 6 is converted into the heat for heating the clothes in the drum 2, thereby being able to effectively utilize the heat generated by the compressor 6.

[0050] In this embodiment, the pipe orifice of the first connecting pipe 74 can be communicated with the top of the bottom air duct 32. The communication position is between the evaporator 4 and the condenser 5, and it is better to be close to the evaporator 4, so that the gas cooled by the evaporator 4 can be quickly introduced into the cavity 73 through the first connecting pipe 74 to dissipate heat for the compressor 6.

[0051] In this embodiment, the first air inlet 71 and the first air outlet 72 are respectively arranged on two opposite side walls of the housing 7, and the first air inlet 71 and the first air outlet 72 are arranged in a staggered manner, so that the gas entering the cavity 73 from the first air inlet 71 will not directly flow out from the first air outlet 72, extending the flow distance of the gas in the cavity 73, so that it can flow through the surface of the compressor 6 more, improving the heat dissipation effect and heat exchange efficiency of the compressor 6, thereby improving the utilization rate of the heat dissipated by the compressor 6, and to a certain extent, reducing the production cost of the dryer by canceling the small fan for cooling the compressor 6.

[0052] Exemplarily, the distance between the position where the cavity 73 is arranged and the position of the compressor 6 is less than a preset first distance, and the distance between the position where the cavity 73 is arranged and the position of the compressor 6 is greater than a preset second distance. It should be understood that maintaining an appropriate distance between the cavity 73 and the compressor 6 can help provide sufficient space around the compressor 6 to ensure good heat dissipation effect of the compressor 6; if the distance is less than the preset second distance, the heat dissipation of the compressor 6 will be limited, which may in turn affect the performance and lifespan of the compressor 6; if the distance is greater than the preset first distance, the heat dissipation effect of the compressor 6 is also not good, and it is also easy to affect the performance and lifespan of the compressor 6.

[0053] Among them, the preset first distance is greater than the preset second distance. It should be noted that the preset first distance and the preset second distance are obtained through repeated verification of a large number of tests. If the distance between the compressor 6 cavity 73 and the compressor 6 is between the preset first distance and the preset second distance, it can ensure good heat dissipation effect of the compressor 6. For example, the preset first distance is between 10 and 20 cm, while the preset second distance is between 2 and 6 mm.

[0054] It should be noted that the sizes of the first air inlet 71 and the first air outlet 72 on the housing 7 will directly affect the flow rate and amount of air in the cavity 73, thereby affecting the heat dissipation effect of the compressor 6. Therefore, in order to ensure that the compressor 6 can have a good heat dissipation effect, the sizes set for the first air inlet 71 and the first air outlet 72 should both be greater than a preset first size and less than a preset second size. When the sizes set for the first air inlet 71 and the first air outlet 72 are greater than the preset first size, the ventilation effect of the cavity 73 can be improved, ensuring that sufficient fresh air flows in and quickly discharging the hot air in the cavity 73, which helps the compressor 6 dissipate heat to maintain the compressor 6 within a suitable operating temperature range; the reason why the sizes set for the first air inlet and the first air outlet 72 are less than the preset second size is that if the sizes set for the first air inlet 71 and the first air outlet 72 are greater than the preset second size, it will cause unstable air flow to form turbulence, resulting in uneven mixing of air before entering the cavity 73 and affecting its cooling effect on the compressor 6.

[0055] Among them, the preset first size is less than the preset second size. Similarly, the preset first size and the preset second size are obtained through repeated verification of a large number of experiments. If the sizes set for the first air inlet 71 and the first air outlet 72 are between the preset first size and the preset second size, it can ensure that the compressor 613 has a good heat dissipation effect. For example, the preset first size is between 2 and 5 cm, and the preset second size is between 6 and 10 cm.

[0056] In some embodiments, the shape of the housing 7 corresponds to the contour of the compressor 6. For example, if the compressor 6 is generally rectangular, the housing 7 is generally rectangular to better surround the compressor 6. One end of the housing 7 is open, and the opening is communicated with the cavity 73 to form a semi-surrounding structure, so that the housing 7 covers the compressor 6. Most of the structure of the compressor 6 is located in the cavity 73, while the parts of the compressor 6 connected to the first capillary 76 and the second capillary 77 are located outside the opening to prevent affecting the outward extension of the first capillary 76 and the second capillary 77.

[0057] Figure 4 It is a schematic structural diagram of the compressor and the housing of the dryer provided by an exemplary embodiment of the present application.

[0058] In some other embodiments, refer to Figure 4, the housing 7 itself is a closed structure. The housing 7 is provided with a first through hole and a second through hole. The first capillary tube 76 and the second capillary tube 77 extend out of the cavity 73 from the first through hole and the second through hole respectively. In this way, the structure of the compressor 6 can be maximally located within the cavity 73, and at the same time, the tightness of the cavity 73 can be improved, so that the gas entering from the first air inlet 71 will not disperse too quickly, and can flow through the surface of the compressor 6 more, and perform efficient heat exchange with the compressor 6 in a narrow space.

[0059] In addition, the housing 7 can be made of materials such as cast iron, aluminum alloy, and stainless steel. If the housing 7 is made of cast iron, due to the high strength and stiffness of cast iron, good structural stability can be provided; if the housing 7 is made of aluminum alloy, due to the good thermal conductivity of aluminum alloy, it can contribute to the heat dissipation of the compressor 6; if the housing 7 is made of stainless steel, due to the excellent corrosion resistance of stainless steel, it helps to improve the durability of the housing 7.

[0060] In this embodiment, to accelerate the air circulation in the air duct 3, an impeller 8 is provided in the air duct 3. The impeller 8 rotates to drive the air to circulate in the air duct 3 and the drum 2, and can suck the air in the air duct 3 into the drum 2 to accelerate the drying speed of the clothes.

[0061] In this embodiment, the impeller 8 is arranged downstream of the condenser 5, specifically, it can be arranged in the rear air duct 33. The second connecting pipe 75 is communicated with the position between the impeller 8 and the condenser 5 in the air duct 3, so that the rotation of the impeller 8 can be used to suck the gas, accelerate the outflow of the gas from the cavity 73, and improve the heat dissipation effect of the compressor 6.

[0062] In addition, the impeller 8 can be made of materials such as plastic, composite material, and aluminum alloy. If the impeller 8 is made of plastic material, such as polypropylene and polyethylene, the production cost of the dryer can be further reduced; if the impeller 8 is made of composite material, such as glass fiber reinforced material and carbon fiber reinforced material, using glass fiber reinforced material can improve the durability of the impeller 8, and using carbon fiber reinforced material can reduce the weight of the impeller 8, which helps to reduce the load of the motor 9; if the impeller 8 is made of aluminum alloy material, due to the light and good thermal conductivity characteristics of aluminum alloy, it helps to quickly transfer the heat in the air and improve the drying efficiency of the clothes.

[0063] In this embodiment, the motor 9 is located outside the air duct 3, such as the outer top of the bottom air duct 32. The motor shaft 94 of the motor 9 is connected to the impeller 8 to drive the impeller 8 to rotate.

[0064] In some embodiments, the motor 9 may be specifically disposed in the cavity 73. A motor shaft 94 hole for the motor shaft 94 to pass through is formed in the housing 7. By placing the motor 9 in the cavity 73, the low-temperature air from the first air inlet 71 therein is used for heat dissipation, so that the compressor 6 and the motor 9 can be cooled simultaneously, enabling the motor 9 to operate within a reasonable temperature range. At the same time, the heat generated during the operation of the motor 9 can be utilized to accelerate the drying of the clothes in the drying drum 2, improving the heat utilization rate.

[0065] Figure 5 It is a schematic structural diagram of the motor and the motor cover of the dryer provided by an exemplary embodiment of the present application.

[0066] In other embodiments, referring to Figure 5 , the dryer further includes a motor cover 91. The motor cover 91 forms a cavity, and at least a part of the motor 9 is disposed in the cavity. A second air inlet and a second air outlet communicating with the cavity are formed in the motor cover 91. The second air inlet is communicated with a position between the evaporator 4 and the condenser 5 in the air duct 3 through a third connecting pipe 92, and the second air outlet is connected to a position downstream of the condenser 5 in the air duct 3 through a fourth connecting pipe 93. After the air cooled by the evaporator 4 enters the cavity through the second air inlet and flows through the surface of the motor 9, it flows out of the second air outlet into the air duct 3. By providing the motor cover 91, the motor cover 91 and the housing 7 respectively enclose the motor 9 and the compressor 6, so that low-temperature gas can be introduced respectively for heat dissipation, and at the same time, the hot air after heat exchange can be introduced into the air duct 3 to dry the clothes. Separately providing the motor cover 91 is beneficial to improving the heat dissipation effect of the motor 9 or the compressor 6 in their respective spaces. It can be understood that the motor shaft 94 of the motor 9 passes through the cavity, and the motor cover 91 is provided with a motor shaft 94 hole for the motor shaft 94 to pass through.

[0067] Similarly, the motor cover 91 can be made of the same material as the housing 7, such as cast iron, aluminum alloy, and stainless steel. Moreover, the distance between the position where the motor cover 91 is provided and the position where the motor 9 is provided is also between a preset first distance and a preset second distance; the sizes of the second air inlet and the second air outlet are also supposed to be between a preset first size and a preset second size to ensure good heat dissipation effect of the motor 9.

[0068] Exemplarily, the high-temperature drying gas passes through the clothes in the drum 2 to dry the clothes, forming high-temperature and high-humidity air. For example, the high-temperature and high-humidity air is 60°C, and the evaporator 4 with a low-temperature surface is 25°C. The high-temperature and high-humidity air passes through the front air duct 31 through the evaporator 4, forming 40°C low-temperature air. The 40°C low-temperature air enters the cavity 73 through the air inlet of the compressor 6 cavity 73, reducing the temperature when the compressor 6 operates, and contacting part of the heat generated when the compressor 6 operates with the 40°C low-temperature air to form 50°C air, and flowing through the air outlet of the compressor 6 cavity 73 to the clothes in the drum 2, thus effectively utilizing a large amount of heat generated by the compressor 6.

[0069] In this embodiment, the drying program operation process of the dryer may include the following steps: when receiving the operation instruction of the drying program, set the rotation speed and drying temperature of the drum 2; control the motor 9 to start to rotate the clothes in the drum 2; during the process of drying the clothes in the drum 2, start the humidity sensor and temperature sensor to detect the humidity and temperature of the clothes in real time, and adjust the rotation speed, rotation angle and rotation direction of the motor 9 according to the detected clothes humidity data and clothes temperature data; detect whether the drying program reaches the preset end operation condition; after the drying program ends, control the impeller 8 to rotate through the motor 9 to cool the clothes in the drum 2.

[0070] Further, when receiving the operation instruction of the drying program, the user can set the rotation speed and drying temperature of the drum 2, such as options including high-speed drying, low-speed drying, low-temperature drying, and high-temperature drying. If the humidity of the clothes in the drum 2 is detected to be high by the humidity sensor, the rotation speed of the motor 9 is increased to improve air circulation, thereby promoting the rapid evaporation of moisture in the clothes. By detecting the temperature of the clothes in the drum 2 through the temperature sensor, it can be monitored whether the temperature of the clothes exceeds the safe temperature range. If the temperature of the clothes is too high and exceeds the safe temperature range, emergency measures can be taken to avoid damaging the clothes.

[0071] Regularly detect whether the drying program reaches the preset end operation condition. The end operation condition includes whether the operation duration of the drying program reaches the set drying duration, and whether the humidity of the clothes detected by the humidity sensor is below the target humidity value. If the operation duration of the drying program reaches the set drying duration, the drying program stops running. If it is detected that the humidity of the clothes is below the target humidity value, the drying program also stops running.

[0072] After the drying program stops running, control the impeller 8 to rotate through the motor 9 to make cold air flow into the drum 2 to accelerate the cooling of the clothes. It should be noted that the cooling duration of the clothes can be adjusted according to the actual situation to ensure that the temperature of the clothes is appropriate when taking out the clothes.

[0073] In the present invention, unless otherwise clearly defined and limited, the terms "mounted", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0074] In the description of this specification, the descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0075] After considering the specification and practicing the disclosed embodiments herein, those skilled in the art will readily conceive of other embodiments of the present application. The present application is intended to cover any variations, uses, or adaptations of the present application, which follow the general principles of the present application and include the common general knowledge or conventional technical means in the technical field not disclosed in the present application.

[0076] It should be understood that the above content is only a preferred exemplary embodiment of the present application and is not used to limit the implementation of the present application. Those of ordinary skill in the art can easily make corresponding adaptations or modifications according to the main concept and spirit of the present application. Therefore, the protection scope of the present application should be subject to the protection scope required by the claims.

Claims

1. A clothes dryer, characterized in that, Comprising: A box body; A drum, disposed within the box body; An air duct, disposed in the space between the outside of the drum and the box body and communicating with the drum, for introducing air into the drum; A heat pump system, including a compressor, a condenser and an evaporator which are connected in communication. The evaporator and the condenser are sequentially disposed in the air duct along the air flow direction, and the compressor is disposed within the box body and outside the air duct; A housing, forming a cavity. At least a part of the compressor is located within the cavity. The housing is provided with a first air inlet and a first air outlet communicating with the cavity. The first air inlet is connected in communication with a position between the evaporator and the condenser in the air duct through a first connecting pipe, and the first air outlet is connected in communication with a position downstream of the condenser in the air duct through a second connecting pipe. After the air cooled by the evaporator enters the cavity through the first air inlet and flows through the surface of the compressor, it flows out from the first air outlet to the air duct.

2. The clothes dryer according to claim 1, wherein The first air inlet and the first air outlet are respectively disposed on two opposite side walls of the housing, and the first air inlet and the first air outlet are arranged in a staggered manner.

3. The clothes dryer according to claim 1, wherein The compressor is connected in communication with the evaporator and the condenser through a first capillary tube and a second capillary tube respectively; one end of the housing is open, and the opening communicates with the cavity, so that the housing covers the compressor, and the part of the compressor connected with the first capillary tube and the second capillary tube is located outside the opening.

4. The dryer according to claim 1, characterized in that, The compressor is connected in communication with the evaporator and the condenser through a first capillary tube and a second capillary tube respectively; the housing is provided with a first through hole and a second through hole, and the first capillary tube and the second capillary tube respectively extend out of the cavity from the first through hole and the second through hole.

5. The dryer according to claim 1, characterized in that, An impeller is disposed in the air duct, and the impeller is used for driving air to flow in the air duct and the drum.

6. The dryer according to claim 5, characterized in that, The impeller is disposed downstream of the condenser, and the second connecting pipe is connected in communication with a position between the impeller and the condenser in the air duct.

7. The dryer according to claim 5, characterized in that, The dryer further includes a motor, the motor is disposed within the box body and outside the air duct, and a motor shaft of the motor is connected to the impeller to drive the impeller to rotate.

8. The dryer according to claim 7, characterized in that, The motor is disposed within the cavity, and the housing is provided with a motor shaft hole for the motor shaft to pass through.

9. The dryer according to claim 5, wherein, The dryer further includes a motor for driving the impeller and a motor cover. The motor cover forms a cavity, at least a part of the motor is disposed within the cavity. The motor cover is provided with a second air inlet and a second air outlet communicating with the cavity. The second air inlet is connected in communication with a position between the evaporator and the condenser in the air duct through a third connecting pipe, and the second air outlet is connected in communication with a position downstream of the condenser in the air duct through a fourth connecting pipe. After the air cooled by the evaporator enters the cavity through the second air inlet and flows through the surface of the motor, it flows out from the second air outlet to the air duct.

10. The dryer according to claim 1, wherein, The dryer further includes a water storage tank disposed at the bottom of the air duct. The water storage tank is communicated with the evaporator and is used for collecting the condensed water generated by the condensed gas of the evaporator.

Images