Patent Application
20210301443
The disclosed embodiments relate to a washing machine and corresponding method. In particular, the disclosed embodiments relate to a washing machine having a drum that is rotated around a first axis to wash items in the drum, and rotates the drum around a second axis different from the first axis to position the drum in either a washing position or a loading/unloading position.
Washing machines are typically configured as either a front-loading washing machine or a top-loading washing machine. A top-loading washing machine may present problems with placement, such as when the machine is placed under a shelf or counter, such that opening the lid can be a problem. A further issue with top-loading machines can be reaching clothes at the bottom of the drum, especially for people of shorter height.
Top-loading washing machines often include an agitator or impeller to move the clothes around the drum. These actions are not as affective due to gravity keeping the clothing on the bottom and makes it difficult for the washer to thoroughly move the clothing around. Also as it states in the user manual in washers with impeller wash system, it is recommended for the clothing to be lightly put around the basket for best performance. The agitator or impeller uses mechanical action to clean the clothes, which can be tough on the fabrics. Moreover, top-load washers generally require a lot more water and energy to complete a cycle versus front-load washers because they fill the tub and float clothes in a detergent filled solution, versus moving the clothes through that solution in front-loading machines.
Front-loading washing machines do not use agitators, but instead may have vanes that help tumble the clothes around inside the drum. Front-loading washing machines can also outperform top-loading machines in cleaning while treating the clothes more gently. A typical front-loading washer also has a rubber seal that attaches the drum to the frame which can cause mold over time due to the collection of leftover water inside the seal's channel.
Accordingly, a washing machine that provides the efficiency and cleaning benefits of a front-loader and does not require as much bending to remove clothes as a top-loading washing machine is desired. With the door directly attached to the drum, a channel between the frame and the drum is omitted and subsequently prevents the chance of mold and mildew forming in the seal.
Embodiments disclosed herein provide a washing machine having a drum. The washing machine includes the drum configured to rotate around a first axis to wash items contained therein, and a motor configured to rotate the drum around a second axis substantially perpendicular to the first axis, such that the drum is rotated by the second motor between a first rotational position and a second rotational position different from the first rotational position, the first rotational position for washing and the second rotational position for loading and unloading the items from the drum.
Further objects, features, and advantages of the disclosed embodiments over the prior art will become apparent from the detailed description of the drawings which follows, when considered with the attached figures.
In the following description, numerous specific details are set forth in order to provide a more thorough description of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without these specific details. In other instances, well-known features have not been described in detail so as not to obscure the invention.
According to an exemplary embodiment a washing machine comprises a basket or drum to hold clothes being washed. The drum is configured to be positioned in a substantially horizontal “front-loading” position when washing, with the drum being rotated around a substantially horizontally positioned axis to perform washing. This allows the washing machine to enjoy all of the washing advantages of a front-load washer. The washing machine is configured to rotate the drum around a second axis out of the substantially horizontal front-loading position to one or more non-horizontal position for loading and unloading of items into and out of the drum.
The washing machine 100 may be any size. In one embodiment, the washing machine may have a width “a” of 27 inches, a depth “b” of 30 inches, and a height “c” of 40 inches.
The drum 110 has an inner door 112 allowing access to an interior of the drum 110. A motor 118 is configured to rotate the drum 110 about an axis 120 when the items in the drum 110 are being washed. The inner door 112 may be connected to the drum 110 by a first hinge 114.
The drum 110 is suspended within the frame 109 by springs 122 connected at one end to the frame 109 at various frame connection points and connected at a second end to suspension mount 124. The suspension mount 124 has a motor 126 connected at a center thereof. The motor 126 has a rotor that rotates about a second axis 127. The second axis 127 may be substantially perpendicular to the axis 120. A plurality of drum motor mounts 128 are connected between the motor 126 and the drum 110. Four drum motor mounts 128 are illustrated, although a different number of drum motor mounts 128 could be used.
The motor 126 may be a direct drive motor, although other types of motors may be used. A rotor in the motor 126 rotates, while other portions of the motor 126 do not rotate. The suspension mount 124 and the springs 122 also do not rotate. When the rotor rotates, since the rotor is connected to the drum motor mounts 128, the drum motor mounts 128 also rotate, causing the drum 110 to rotate, such as from the position shown in
In preferred embodiments, the motor 126 is used to rotate the drum 110 to any number of positions. For example, the motor 126 may rotate the drum 110 between the substantially horizontal position as shown in
During washing, the drum 110 may be positioned to be in the substantially horizontal position as shown in
Before and after washing, the drum 110 may be rotated to a non-horizontal position such as illustrated in 3. This position is used for loading and unloading of items from the drum 110. In a preferred embodiment, the motor 118 may be controlled to rotate the drum 110 to a position where the axis 120 is positioned about 58.8 degrees from the substantially horizontal position of
During rotation of the drum about the axis 120 by motor 118 or rotation of the drum about axis 127 by motor 126, the drum 110 is suspended within the frame 109 by the suspension mount 124 and the springs 122 connected to the frame 109. The size and shape of the frame 109 are selected such that the drum 110 will not contact side of the frame 109 when the drum 110 is rotated.
The outer door 104 and the inner door 112 are shown in open positions in
The inner door 112 includes a first hinge 114 connected to the drum 110 and a second hinge 116 disposed partway along the inner door 112. The portion 111 of the inner door 112 disposed between the first hinge 114 and the second hinge 116 is configured to pivot approximately 90 degrees around hinge 114 between a closed position as shown in
The various embodiments of the washing machine described herein provide a washing machine that has advantages over conventional washing machines. The washing machine 100 is positioned in a substantially horizontal position for washing, providing all the washing benefits of a conventional front-loading washing machine. Additionally, the washing machine 100 is configured to rotate the drum to a non-horizontal position for easier loading/unloading of items from the drum. In some embodiments, the loading/unloading position may be between the substantially horizontal position used for washing and a substantially vertical position, which may provide an improved position for loading/unloading items from the drum as compared to a conventional top-loading machine or a conventional front-loading machine.
The configuration of the inner and outer doors that allow access to the drum may also provide advantages. As explained herein, by providing two hinges on the outer door 104, the outer door is configured to require less space above the washing machine. Additionally, the two hinges provided on the inner door 112 allow the inner door to be poisoned in a substantially horizontal open position even when the drum is positioned at a non-horizontal angle.
It will be appreciated that the washing machine 100 illustrated in the figures is only exemplary of the specific illustrated embodiments and that various modifications could be made. For example, embodiments of the washing machine 100 may be provided with various other features not shown herein.
It will be understood that the above described arrangements of apparatus and the method there from are merely illustrative of applications of the principles of this invention and many other embodiments and modifications may be made without departing from the spirit and scope of the invention as defined in the claims.
