FIELD
The subject matter herein generally relates to clothes treatment apparatus, and more particularly, to a clothes dryer.
BACKGROUND
Clothes dryers primarily operate in two distinct modes: an internal circulation mode and an external circulation mode. In dryers with the internal circulation mode, the airflow for drying circulates within the dryer. As a result, the drying process is minimally influenced by external temperature and humidity, making such dryers suitable for use in humid seasons. However, the internal circulation mode may need a long time to dry out the clothes since the water vapor in the dryer is difficult to be discharged to the ambient environment. The external circulation mode facilitates exchanging of airflows between the dryer and the ambient environment, and thus a shorter time to dry out the clothes is required. However, the external circulation mode may be affected by external temperature and humidity, making such dryers suited for used in dry weather conditions.
Thus, an airflow exchange valve is mounted into the dryer, which allows the dryer to switch between the above mentioned two modes to meet needs under different weather conditions. However, an existing airflow exchange valve includes an airflow inlet valve and an airflow outlet valve independent from each other. An operation of the airflow inlet valve and an operation of the airflow outlet valve may not be synchronized, as such, the dryer may not be operating efficiently when switching between the internal and the external circulation modes and the circulations may become obstructed.
BRIEF DESCRIPTION OF THE DRAWINGS
Implementations of the present technology will now be described, by way of example only, with reference to the attached figures.
FIG. 1 is a diagrammatic view of a clothes dryer according to an embodiment of the present disclosure.
FIG. 2 is a cross-sectional view along a view line II-II of the clothes dryer in FIG. 1.
FIG. 3A is a diagrammatic view of the clothes dryer in FIG. 2 in a first circulation state.
FIG. 3B is a diagrammatic view of the clothes dryer in FIG. 2 in a second circulation state.
FIG. 4 is a diagrammatic view of a switching valve of the clothes dryer in FIG. 2, the clothes dryer is in a first circulation state.
FIG. 5 is a cross-sectional view along a view line V-V of the switching valve in FIG. 4.
FIG. 6 is a diagrammatic view of the switching valve of the clothes dryer in FIG. 2, the clothes dryer is in second circulation state.
FIG. 7 is a cross-sectional view along a view line VII-VII of the switching valve in FIG. 6.
DETAILED DESCRIPTION
It will be appreciated that for simplicity and clarity of illustration, where appropriate, reference numerals have been repeated among the different figures to indicate corresponding or analogous members. In addition, numerous specific details are set forth in order to provide a thorough understanding of the embodiments described herein. However, it will be understood by those of ordinary skill in the art that the embodiments described herein can be practiced without these specific details. In other instances, methods, procedures, and members have not been described in detail so as not to obscure the related relevant feature being described. Also, the description is not to be considered as limiting the scope of the embodiments described herein. The drawings are not necessarily to scale and the proportions of certain parts may be exaggerated to better illustrate details and features of the present disclosure.
The term “comprising,” when utilized, means “including, but not necessarily limited to;” it specifically indicates open-ended inclusion or membership in the so-described combination, group, series, and the like.
Referring to FIGS. 1 and 2, a clothes dryer 100 is provided according to an embodiment of the present disclosure. The clothes dryer 100 includes a drum 10, an airflow guiding component 20, and a switching valve 30. The drum 10 is connected to the airflow guiding component 20. The switching valve 30 is configured between the drum 10 and the airflow guiding component 20. The drum 10 defines a first airflow path 11, which may accommodate damp clothes. The airflow guiding component 20 defines a second airflow path 21. The first airflow path 11 is connected to the second airflow path 21, allowing the airflow to circulate within the drum 10 and the flow guiding component 20. The switching valve 30 is connected to the external environment and may introduce external airflow into the first airflow path 11.
Referring to FIGS. 4, 5 and 6, the switching valve 30 includes an air-exchange chamber 31 and a sealing assembly 32 disposed within the air-exchange chamber 31. The air-exchange chamber 31 includes a first air chamber 311 and a second air chamber 312 connected to the first air chamber 311. A through hole 313 is defined between the first air chamber 311 and the second air chamber 312, allowing the airflow to flow between the first air chamber 311 and the second air chamber 312.
The first air chamber 311 defines a first inlet 311a and a first outlet 311b. The first inlet 311a is connected to the second flow path 21, and the first outlet 311b is connected to the external environment. The second air chamber 312 defines a second inlet 312a and a second outlet 312b. The second inlet 312a is connected to the external environment. The second outlet 311b is connected to the first flow path 11.
The first inlet 311a is staggered from the first outlet 311b. The second inlet 312a is aligned with the second outlet 312b. The first outlet 311b and the second inlet 312a are arranged side by side. This configuration facilitates the arrangement of the first outlet 311b and the second inlet 312a on a same side of the drum 10. During installation, a space is only needed between the side of the drum 10 and an installation surface (for example, a wall), thereby simplifying installation requirements and reducing the installation space for the clothes dryer 100.
Referring to FIGS. 4, 5 and 6, the sealing assembly 32 includes a driving member 321, a first sealing member 322, and a second sealing member 323. The driving member 321 is positioned outside the air-exchange chamber 31, and is connected to the first sealing member 322 to rotate the first sealing member 322. The first sealing member 322 is pivotally connected to the second sealing member 323, causing the second sealing member 323 to move when the first sealing member 322 rotates.
The first sealing member 322 selectively covers one of the first outlet 311b and the through hole 313. The first sealing member 322 can seal the first outlet 311b without sealing the through hole 313 (first circulation state A), or can seal the through hole 313 without sealing the first outlet 311b (second circulation state B). The second sealing member 323 selectively covers the second inlet 312a, either sealing (first circulation state A) or not sealing the second inlet 312a (second circulation state B).
Referring to FIGS. 4 to 7, during the rotation of the first sealing member 322 by the drive member 321, the second sealing member 323 also moves, allowing the clothes dryer 100 to switch between the first circulation States A and the second circulation state B.
Referring to FIGS. 4 and 5, in first circulation state A, the first sealing member 322 covers the first outlet 311b without sealing the through hole 313, while the second sealing member 323 seals the second inlet 312a. The airflow in the first flow path 11 or the second flow path 21 cannot exchange with the airflow in the external environment. The airflow from the second flow path 21 can only enter the first chamber 311 via the first inlet 311a, then move from the first chamber 311 to the second chamber 312 via the through hole 313, and subsequently flow from the second chamber 312 to the first flow path 11 through the second outlet 312b. In the first circulation state A, the airflow circulates only within the clothes dryer 100.
Referring to FIGS. 6 and 7, in the second circulation state B, the first sealing member 322 does not seal the first outlet 311b but does seal the through hole 313, and the second sealing member 323 does not seal the second inlet 312a. The airflow in the first flow path 11 or the second flow path 21 can exchange with the airflow the external environment. The airflow from the second flow path 21 can enter the first chamber 311 via the first inlet 311a and be discharged to the external environment via the first outlet 311b. Meanwhile, the external airflow can enter the second chamber 312 via the second inlet 312a, and then flow to the first flow path 11 via the second outlet 312b. In the second circulation state B, there is a continuous flow of fresh air from the external environment into the clothes dryer 100.
Referring to FIGS. 5 and 7, in this embodiment, the first sealing member 322 is generally L-shaped. The first sealing member 322 includes a first sealing plate 322a and a second sealing plate 322b. The first sealing plate 322a is connected to the second sealing plate 322b to form a limiting space 322c. The driving member 321 drives the first sealing plate 322a and the second sealing plate 322b to rotate around a linear connection area between the first sealing plate 322a and the second sealing plate 322b. The first sealing plate 322a is used to selectively cover the first outlet 311b, and the first sealing plate 322a and the second sealing plate 322b are used to selectively cover the through hole 313. The second sealing member 323 can be rotatably connected to one side of the second sealing plate 322b away from the first sealing plate 322a. Referring to FIG. 5, in the first circulation state A, the first sealing plate 322a seals the first outlet 311b, and the first sealing plate 322a and the second sealing plate 322b do not seal the through hole 313. Referring to FIG. 7, in the second circulation state B, the first sealing plate 322a does not seal the first outlet 311b, and the first sealing plate 322a and the second sealing plate 322b cooperatively seal the through hole 313.
Referring to FIGS. 5 and 7, in this embodiment, the air-exchange chamber 31 further includes a limiting plate 314. The limiting plate 314 is disposed on the first outlet 311b. The limiting plate 314 faces the limiting space 322c. In the first circulation state A, the limiting plate 314 supports the first sealing plate 322a to prevent the first sealing plate 322a from continuing to rotate. In the second circulation state B, the limiting plate 314 supports the second sealing plate 322b to prevent the second plate 322b from continuing to rotate. Thus, the limiting plate 314 can be used to restrict a rotation range of the first sealing member 322.
Referring to FIGS. 2, 4, 5, and 7, in this embodiment, the clothes dryer 100 further includes a sensor 40 and a controller 41 connected to the sensor 40. The controller 41 also connected to the driving member 321. The a sensor 40, such as a micro switch, can be placed on the limiting plate 314. When the sensor 40 detects that the first sealing member 322 or the second sealing member 323 is in a preset position, the controller 41, such as Programmable Logic Controller, controls the driving member 321 to stop working. This prevents the first sealing plate 322a and the second sealing plate 322b from continuing to rotate, thereby ensuring a stable switch between the first circulation state A and the second circulation state B of the switching valve 30. In other embodiments, the sensor 40 can also be placed on an opposite inner wall of the second chamber 312 or the second sealing member 323 to detects whether the first sealing member 322 or the second sealing member 323 is in a preset position.
Referring to FIG. 6, in this embodiment, the second sealing member 323 includes a third sealing plate 323a and a guiding post 323b. The third plate 323a movably covers the second inlet 312a. The guiding post 323b is positioned on an opposite side of the third sealing plate 323a. The second air chamber 312 is recessed on the opposite side of the third sealing plate 323a to form a guiding groove 312c. The guiding post 323b is movably received in the guiding groove 312c to limit a range of movement of the third sealing plate 323a. The guiding groove 312c is crescent-shaped, and the shape of the guiding groove 312c is determined by the projection of an area 312d swept by the third sealing plate 323a during movement on an inner side of the second air chamber 312.
Referring to FIGS. 4 and 5, in this embodiment, the first sealing member further includes two first assembly portions 33, which are spaced apart at one end of the second sealing plate 322b facing the third sealing plate 323a. The second sealing member 323 further includes two second assembly portions 34, which are positioned corresponding to the first assembly 33. The sealing assembly 32 further includes a rotating pin 37. The rotating pin 37 passes through the first assembly portion 33 and the second assembly portion 34, allowing the third sealing plate 323a to rotate relative to the second sealing plate 322b. In other words, a hinged connection is achieved between the second sealing plate 322b and the third sealing plate 323a.
Referring to FIG. 5, in this embodiment, the sealing assembly 32 further includes a rotating assembly portion 36. The rotating assembly portion 36 is positioned at a connecting area between the first sealing plate 322a and the second sealing plate 322b. A drive shaft 321a of the driving member 321 is connected to the rotating assembly portion 36. The rotating assembly 36 defines a square groove 361. A cross-sectional shape of the drive shaft 321a is square, allowing the drive shaft 321a to be inserted into the square groove 361. When the drive shaft 321a rotates, the rotating assembly 36 rotates with the drive shaft 321a, thereby driving the first sealing member 322 to rotate. In at least one embodiment, the driving member 321 is an electric motor.
Referring to FIGS. 3A and 3B, in this embodiment, the flow guiding component 20 also includes a fan 50, which is positioned inside the second flow path 21, and is used to drive air from the flow path 11 into the second flow path 21, thereby facilitating the drying of wet clothing inside the first flow path 11.
Referring to FIGS. 3A and 3B, in this embodiment, the flow guiding component 20 further includes a dehumidifier 60. The dehumidifier 60 is positioned inside the second flow path 21, and is used to reduce the air humidity inside the second flow path 21, thereby speeding up the drying of clothing inside the first flow path 11.
Referring to FIGS. 3A and 3B, in this embodiment, the flow guiding component 20 further includes a heater 70, which is positioned between the second inlet 312a and the first flow path 11. The heater 70 is used to heat the air entering the first flow path 11.
Even though information and advantages of the present embodiments have been set forth in the foregoing description, together with details of the structures and functions of the present embodiments, the disclosure is illustrative only. Changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the present exemplary embodiments, to the full extent indicated by the plain meaning of the terms in which the appended claims are expressed.
Patent Application
20240328064
