This invention relates generally to valve assemblies, and, more particularly, to valve assemblies in a clothes treating apparatus.
At least some known clothes treating apparatus, such as for example, washing machines and dry cleaning machines include a cabinet that houses an outer tub for containing a quantity of water or dry cleaning fluid, a perforated clothes basket within the tub, and a drive and motor assembly mounted underneath the stationary outer tub to rotate the basket within the tub.
Washing machines generally perform a wash cycle followed by a rinse cycle and a spin cycle, and drain the used water from the outer tub outside at the end of the wash/rinse cycle. Dry cleaning machines generally also perform a cleaning cycle followed by a spin cycle and a drying cycle, and include a storage tank for storing the dry cleaning fluid. In at least one cleaning cycle, the dry cleaning fluid saturates the clothes and dissolves certain fluid soluble soils. Due to the cost of the dry cleaning fluid, the used fluid is not discarded at the end of the cleaning cycle, rather, the dry cleaning fluid is filtered to remove particulates, such as lint, cleaned, and returned to the storage tank for reuse.
In one aspect, a valve assembly for a clothes treating apparatus is provided. The apparatus is operable in a dry cleaning process and a water washing process. The apparatus includes a cabinet, a wash tub positioned within the cabinet, and a storage tank positioned within the cabinet. The valve assembly includes a valve inlet configured to be coupled in flow communication with the wash tub, first and second valve outlets coupled in flow communication with the valve inlet, and a first valve and a second valve configured to respectively control the flow through the first valve outlet and the second valve outlet. The first valve is configured to channel liquid from the wash tub outward through the first valve outlet in the water washing process, and the second valve is configured to channel liquid from the wash tub outward through the second valve outlet in the dry cleaning process.
In another aspect, a clothes treating apparatus operable in a dry cleaning process and a water washing process is provided. The apparatus includes a cabinet, a wash tub positioned within the cabinet for receiving laundry therein, and a valve assembly positioned within the cabinet. The valve includes a valve inlet coupled in flow communication with the wash tub, first and second valve outlets coupled in flow communication with the valve inlet, and a first valve and a second valve configured to respectively control the flow through the first valve outlet and the second valve outlet. The first valve is configured to channel liquid from the wash tub outward through the first valve outlet in the water washing process, and the second valve is configured to channel liquid from the wash tub outward through the second valve outlet in the dry cleaning process.
In still another aspect, a method for assembling a clothes treating apparatus operable in a dry cleaning process and a water washing process is provided. The method includes providing a cabinet, positioning a wash tub within the cabinet, and positioning a valve assembly within the cabinet. The method also includes coupling a valve inlet in flow communication with the wash tub, coupling first and second valve outlets in flow communication with the valve inlet, and providing a first valve and a second valve configured to respectively control the flow through the first valve outlet and the second valve outlet. The first valve is configured to channel liquid from the wash tub outward through the first valve outlet in the water washing process, and the second valve is configured to channel liquid from the wash tub outward through the second valve outlet in the dry cleaning process.
In still another aspect, a method for channeling fluid through a clothes treating apparatus operable in a dry cleaning process and a water washing process is provided. The apparatus includes a cabinet, a wash tub, a storage tank, and a valve assembly coupled in flow communication with the wash tub. The valve assembly includes a valve inlet, a first and a second valve outlet, a first and a second valve, a first and a second pump. The method includes channeling the fluid from the wash tub into the valve assembly, and selectively channeling the fluid from the valve assembly to one of the storage tank and an exterior of the apparatus.
Water separator 150 removes water from the dry cleaning fluid. Water is not normally used in the dry cleaning process, however, water may be present in washing/dry cleaning machine 100 from humidity in the air or from a wet garment in the clothes load. Canister filter 152 is part of a multi-stage filtration process, the first stage of which occurs in fluid recovery system 140.
Operation of washing/dry cleaning machine 100 is controlled by a main controller 156 operatively coupled to the user interface input located on front panel 104 (shown in
Washing/dry cleaning machine 100 also includes a valve assembly 160 connected with the various components of washing/dry cleaning machine 100. In one embodiment, fluid lines 146 connect wash tub 130 and storage tank 136 with valve assembly 160. Valve assembly 160 is used to channel a liquid, such as water and dry cleaning fluid, from wash tub 130 to a drain (shown in
Housing 162 includes a front panel 180, a back panel 182, two side panels 184, and a bottom panel 186. Panels 180, 182, 184, and 186 enclose a receiving space 188 therein. Housing 162 also includes two output passages 190 extending upward from receiving space 188. Housing 162 also includes two valve chambers 192 defined on front panel 180 and in flow communication with receiving space 188. Housing 162 further includes two pump chambers 194 defined on back panel 182. Valve chambers 192 and pump chambers 194 are in flow communication with respective output passages 190. Each side panel 184 further includes a lug 196 extending outward therefrom.
Lid 164 is larger than housing 162 in cross section so it can adequately cover housing 162. Lid 164 includes a valve inlet 200, a first valve outlet 202, and a second valve outlet 204 defined thereon. Valve inlet 200, in one embodiment, is coupled in flow communication with wash tub 130 (shown in
Each pump 174 includes an impeller 212 positioned within pump chambers 194 of housing 162. Impellers are operatively coupled to main controller 156 (shown in
Button/coin trap 176 is complementary with respect to housing 162 in cross section, and is fittingly received within receiving space 188. Trap 176 includes a plurality of openings 214 defined therein which allows liquid to flow therethrough while collecting items such as buttons, coins, rocks, lint, and even valuable items, such as jewelry. In the exemplary embodiment, trap 176 collects items having a diameter larger than 5 millimeters. Alternatively, trap 176 collects items having a diameter larger than 0.5 millimeters. Trap 176 is removable from valve assembly 160 when lid 164 is removed from housing 162. In operation, a user cleans the items collected within trap 176 and retrieves the valuable items forgotten within the laundry and drained out from wash tub 130.
Each electromechanical valve 172 includes a plunger assembly 220 received within a corresponding valve chamber 192, and an actuator 222 to drive plunger assembly 220 within valve chamber 192. Actuator 222 is supported on a bracket 224 which is engaged with lugs 196 of housing 162. Actuator 222 is operatively coupled to main controller 156 for controlling a flow of liquid through corresponding valve 172.
Plunger assembly 220 also includes a connecting rod 238 connected with plunger 230, and a connection spring 240 connecting connecting rod 238 and actuator 222. In an exemplary embodiment, actuator 222 is a linear motion actuator, and when energized, compresses spring 232 and pulls plunger 230 through connecting rod and spring 238, 240, such that plunger 230 moves from the closed position to the open position. When actuator 222 is de-energized, spring 232 pushes plunger 230 back to the closed position. In an alternative embodiment, actuator 222 is a rotating motion actuator, and drives one of a rack and pinion mechanism (not shown) and a wound wire spool mechanism (not shown) for moving plunger 230 between the open and the closed positions. In another embodiment, actuator is a solenoid (not shown) for driving plunger 230.
Valve outlets 202, 204 of lid 164 are aligned respectively with output passages 190 of housing 162, such that liquid exiting output passage 190 flows through corresponding valve outlet 202, 204. In an exemplary embodiment, rectangular and O-shaped seals 206, 208 are positioned between housing 162 and lid 164 to provide a watertight engagement therebetween. In addition, some seals 242 (shown in
When valve 172 is energized and moves to the open position, liquid exiting trap 176 flows through valve chamber 192, and flows into pump chamber 194. Impeller 212 positioned within pump chamber 194 then forces the liquid through output passage 190 and corresponding valve outlet 202, 204. When valve 172 is de-energized and moves back to the closed position, plunger 230 abuts against housing 162, and bellows seal 234 restricts liquid exiting trap 176 from flowing into valve chamber 192. As such, no liquid flows into pump chamber 194 and is accordingly not output from corresponding valve outlet 202, 204. As such, the liquid may be output from at least one of valve outlets 202, 204 by energizing the corresponding valve 172 and pump 174.
Electromechanical valve 278 is similar to valve 172 (shown in
Trap 276 is inserted into main tube 264 through a first end 281 thereof, and functions similarly to trap 176 (shown in
Valve assembly 260 channels liquid therethrough similarly to valve assembly 160 (shown in
Valve inlet 270 of valve assembly 260 is coupled in flow communication with wash tub 130, and first valve outlet 272 and second valve outlet 274 are coupled in flow communication with pumps 332, 334. In the exemplary embodiment, pumps 332, 334 are energized to pump the liquid through corresponding valve outlets 272, 274 to a drain 336 and storage tank 136. In an exemplary embodiment, a valve 338 is coupled in flow communication with, and is positioned between, wash tub 130 and valve assembly 260. Valve 338 retains the liquid within wash tub 130, and allows liquid flow therethrough only when main controller 156 (shown in
In the water washing process, water is delivered into wash tub 130 through at least one of three water valves 340, 342, 344. After a wash cycle of the water washing process, main controller 156 energizes the corresponding valve 278 and pump 332 to drain water from wash tub 130, through first valve outlet 272, and to drain 336 positioned at the exterior of machine 100.
In the dry cleaning process, the dry cleaning fluid is delivered into wash tub 130 from storage tank 136. After a cleaning cycle of the dry cleaning process, main controller 156 energizes the corresponding valve 278 and pump 334 to drain the dry cleaning fluid from wash tub 130, and through second valve outlet 274. The dry cleaning fluid exiting second valve outlet 274 flows through a variety of filters elements, such as for example, a dual lint filter 350, a particle filter 352, and an absorption filter 354, and then into storage tank 136. In the exemplary embodiment, at least a portion of the dry cleaning fluid is channeled through water separator 150 for removing any water from the dry cleaning fluid. The dry cleaning fluid exiting water separator 150 is channeled into storage tank 136, and the removed water is channeled to drain 336 outside machine 100.
Accordingly, main controller 156 energizes the corresponding valve 272, 274 and pump 332, 334 to drain liquid from wash tub 130 to drain 336 and storage tank 136 in the water washing/dry cleaning process, respectively. In an exemplary embodiment, main controller 156 energizes valve 272, 274 and moves it to the open position after energizing corresponding pump 332 or 334. Main controller 156 de-energizes valve 272 or 274 which moves to the closed position before de-energizing the corresponding pump 332 or 334. As such, liquid flowing through valve 172 is restricted from flowing back into valve assembly 260, which facilitates reducing the liquid in a new wash/cleaning cycle being contaminated by the liquid used in the previous wash/cleaning cycle, even when valve 338 is eliminated from machine 100. It is contemplated, however, that valve assemblies 160, 300 are operated in such sequence in alternative embodiments.
In an alternative embodiment, the electromechanical valves of valve assembly 160, 260, and 300 are check valves (not shown). In a further embodiment, both electromechanical valves are check valves. In another embodiment, only one of the electromechanical valves is a check valve. In the alternative embodiment, the check valve is movable between an open position which allows liquid flow therethrough, and a closed position which restricts liquid flow therethrough. The corresponding pump 332 or 334 positioned downstream of the check valve controls the position of the check valve. Specifically, the check valve remains in the closed position when the corresponding pump 332 or 334 is de-energized, and is moved to an open position when the corresponding pump 332 or 334 is energized to produce a downstream pressure. The check valve moves to the closed position as soon as the corresponding pump 332 or 334 is de-energized, such that the liquid flowing back into the valve assembly is reduced, and contaminated liquid flowing to a new wash/cleaning cycle is avoided.
Therefore, controller 156 energizes pump 332 or 334 to drain the liquid from wash tub 130 through corresponding valve outlet 272 or 274. By substituting a check valve for the electromechanical valve in valve assembly 160, 260, and 300, the electrical connection of the electromechanical valve is eliminated. As such, the logic control of main controller 156 for controlling the operation sequence of the pump and the valve is simplified.
Valve assemblies 160, 260, and 300 channel the liquid from wash tub 130 to different destinations in the water washing/dry cleaning process, which enables washing/dry cleaning machine 100 to store the used dry cleaning fluid for reuse as well as drain the used water outside. In addition, two valves are at least partially positioned within a single valve housing, which facilitates providing a more compact valve assembly.
While the invention has been described in terms of various specific embodiments, those skilled in the art will recognize that the invention can be practiced with modification within the spirit and scope of the claims.