Extraction cleaner

Abstract

An extractable cleaner can include a base, an upright body pivotally coupled to the base, a supply tank removably coupled to the upright body, and a recovery tank removably coupled to the upright body. The base can include a non-removable door and a removable suction nozzle. At least one fluid dispensing nozzle can be disposed on the door. The door can be pivotally coupled to the base for providing access to the agitator. The cleaner can include an automatic spray configuration. The cleaner can include a support on the upright portion for the recovery tank. The cleaner can include an additional tank received in a receptacle of the supply tank. The recovery tank can include a float and / or an airflow management configuration. The cleaner can include a cleaning tool and a suction conversion valve and / or a fluid conversion valve. The cleaner can include a mixing valve for supplying fluid to the fluid conversion valve. A cleaning composition is also provided that includes a water-based cleaning solution mixed as needed with a water-based oxidizing solution.

Description

[0001] This application is a divisional application of the invention patent application with application number 202380093756.2 (the corresponding international application application number is PCT / CN2023 / 083670), application date March 24, 2023, and invention title "Extraction Cleaner". Technical Field

[0002] This disclosure relates generally to surface treatment apparatus, and more specifically to extractable cleaners. Background Technology

[0003] Surface treatment apparatuses are configured to operate on a surface to be cleaned (e.g., a floor). When operating on the surface to be cleaned, the surface treatment apparatus can collect at least a portion of any debris placed on the surface to be cleaned. An example of a surface treatment apparatus is a pull-out cleaner. A pull-out cleaner is configured to apply liquid to the surface to be cleaned and draw at least a portion of the applied liquid from the surface to be cleaned. Attached Figure Description

[0004] The features of this embodiment will be better understood by reading the following detailed description in conjunction with the accompanying drawings. The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component shown in the various figures may be represented by the same reference numerals. For clarity, not every component may be labeled in every figure.

[0005] Figure 1 An example of a pull-out cleaner according to this disclosure is shown schematically.

[0006] Figure 2 This is a front perspective view of another exemplary pull-out cleaner according to the present disclosure.

[0007] Figure 3 yes Figure 2 The diagram shows a front perspective view and a partial exploded view of the base of the pull-out cleaner.

[0008] Figure 4 yes Figure 2 The image shows a front perspective view of the base of the extraction cleaner, with the suction nozzle removed.

[0009] Figure 5 yes Figure 2 A front stereoscopic sectional view of a portion of the pull-out cleaner shown.

[0010] Figure 6 yes Figure 2 The image shows a bottom-view perspective view of the suction nozzle of the extraction cleaner.

[0011] Figure 7 yes Figure 2 A side sectional view of a portion of the pull-out cleaner shown.

[0012] Figure 8 yes Figure 2 The image shows a cross-sectional view of a portion of the extraction cleaner, revealing the connector end of the suction nozzle.

[0013] Figure 9 It is set in Figure 2 A top perspective view of the connector body and the force spring at the connector end of the suction nozzle of the pull-out cleaner shown.

[0014] Figure 10 yes Figure 2 The image shows a top-view perspective of the door of a pull-out cleaner.

[0015] Figure 11 yes Figure 2 The image shows a top perspective view of the base of a pull-out cleaner, with the cover on the door removed.

[0016] Figure 12 yes Figure 2 The image shows a bottom-view perspective of the door of a pull-out cleaner.

[0017] Figure 13 yes Figure 2 A perspective view of the fluid supply and base supply pipeline connections of the extraction cleaner shown.

[0018] Figure 14 yes Figure 2 A perspective view of the base supply line connection of the pull-out cleaner shown.

[0019] Figure 15 yes Figure 2 A side sectional view of a portion of the pull-out cleaner shown.

[0020] Figure 16 yes Figure 2 A side sectional view of a portion of the pull-out cleaner shown.

[0021] Figure 17 yes Figure 2 A front sectional view of a portion of the pull-out cleaner shown.

[0022] Figure 18 This is a partial exploded perspective view of another embodiment of the extractable cleaner according to the present disclosure.

[0023] Figure 19 This is a perspective view of a portion of another embodiment of the extractable cleaner according to the present disclosure.

[0024] Figure 20 yes Figure 19 A partial exploded perspective view of a portion of the pull-out cleaner shown.

[0025] Figure 21 This is a perspective view of a portion of another embodiment of the extractable cleaner according to the present disclosure.

[0026] Figure 22 This is a perspective view of a portion of another embodiment of the extractable cleaner according to the present disclosure.

[0027] Figure 23 This is a perspective view of the wicking structure according to the present disclosure.

[0028] Figure 24 yes Figure 2 A front-view perspective of a portion of the pull-out cleaner shown.

[0029] Figure 25 yes Figure 2 The image shows a front-view perspective of the automatic spray detector for a pull-out cleaner.

[0030] Figure 26 yes Figure 2 A side sectional view of a portion of the pull-out cleaner shown.

[0031] Figure 27 This is a side cross-sectional schematic diagram as part of another embodiment of the extractable cleaner according to the present disclosure.

[0032] Figure 28 yes Figure 2 A front perspective view of the supply box and auxiliary box of the pull-out cleaner shown.

[0033] Figure 29 yes Figure 2 A rear sectional view of a portion of the pull-out cleaner shown.

[0034] Figure 30 yes Figure 2 A front-view perspective of a portion of the pull-out cleaner shown.

[0035] Figure 31 yes Figure 2 The image shows a bottom-view perspective view of the recycling bin of the pull-out cleaner.

[0036] Figure 32 yes Figure 2 A side sectional view of a portion of the pull-out cleaner shown.

[0037] Figure 33 yes Figure 2 The side sectional view of the collection bin of the pull-out cleaner shown.

[0038] Figure 34 yes Figure 33 The front sectional view of the recycling bin shown.

[0039] Figure 35 yes Figure 33 The rear-view perspective of the float of the recycling bin shown.

[0040] Figure 36 yes Figure 33 A side sectional view of a portion of the recycling bin shown.

[0041] Figure 37 yes Figure 2 The image shows a front-view perspective view of the suction switching valve of the extraction cleaner.

[0042] Figure 38 yes Figure 37 The diagram shows a side perspective view of the housing of the suction switching valve.

[0043] Figure 39 yes Figure 37 The diagram shows a front perspective view of the rotor of the suction switching valve.

[0044] Figure 40 yes Figure 2 The image shows a side view of a portion of a pull-out cleaner, with the rotor handle oriented downwards.

[0045] Figure 41 yes Figure 2 The image shows a side sectional view of a portion of a pull-out cleaner, with the rotor handle oriented downwards.

[0046] Figure 42 yes Figure 2 A rear-view perspective view of a portion of the pull-out cleaner shown.

[0047] Figure 43 yes Figure 2 A rear-view perspective view of a portion of the pull-out cleaner shown.

[0048] Figure 44 yes Figure 2 A side sectional view of a portion of the pull-out cleaner shown.

[0049] Figure 45 yes Figure 2 The image shows a side sectional view of the fluid switching valve of the extraction cleaner, and schematically illustrates the operation of the extraction switching valve.

[0050] Figure 46 yes Figure 2 The image shows a side sectional view of the fluid switching valve of the extraction cleaner, and schematically illustrates the operation of the extraction switching valve.

[0051] Figure 47 yes Figure 2 The diagram shows a top-view perspective of the mixing valve of the extraction cleaner.

[0052] Figure 48 yes Figure 47 The side sectional view of the mixing valve shown.

[0053] Figure 49 yes Figure 47 The diagram shows a top sectional view of the mixing valve.

[0054] Figure 50 yes Figure 47 An exploded view of the mixing valve shown.

[0055] Figure 51 This is a block diagram illustrating a portion of an exemplary pull-out cleaner according to this disclosure. Detailed Implementation

[0056] This disclosure generally relates to a pull-out cleaner and cleaning compositions thereof. In some embodiments, the pull-out cleaner includes a body, a supply tank removably coupled to the body, an auxiliary tank removably coupled to the body, a recovery tank removably coupled to the body, a fluid pump fluidly coupled to the supply tank and the auxiliary tank, a suction motor fluidly coupled to the recovery tank, and a base including a fluid applicator fluidly coupled to the pump and a suction inlet fluidly coupled to the recovery tank. The supply tank is configured to store a first fluid, and the auxiliary tank is configured to store a second fluid; the first and second fluids may be different fluids. The pump is configured to actuate one or more of the first and / or second fluids through the fluid applicator at the base, such that the first and / or second fluids are applied to a surface to be cleaned (e.g., a floor). The suction motor is configured to pump at least a portion of the applied first and / or second fluids into the suction inlet at the base for placement in the recovery tank for later disposal.

[0057] In some embodiments, the extractable cleaner may further include a flexible hose configured to fluidly connect the cleaning tool to a collection tank. The flexible hose may include (e.g., removably or non-removably) a first end connected to the body and (e.g., removably or non-removably) a second end connected to the cleaning tool, allowing the cleaning tool to move independently of the body of the extractable cleaner to perform targeted cleaning operations, such as cleaning specific points, small areas inaccessible at the base, pets, etc. A pump may be configured to actuate liquid from a supply tank and / or an auxiliary tank through the cleaning tool and to the target surface. A suction motor is configured to actuate debris and fluid from the target surface into the cleaning tool and into the collection tank for later disposal.

[0058] Figure 1This is a schematic diagram of an example of a pull-out cleaner 100 according to the present disclosure. As shown, the pull-out cleaner 100 includes an upright body 102, a base 104 pivotally connected to the upright body 102, a flexible hose 103 having a cleaning tool 105 coupled to its end, a supply box 106, an attachment box 107, and a recycling box 108. The pull-out cleaner 100 may be configured to operate using one or more batteries and / or mains power (e.g., via an electrical connection to a household electrical outlet).

[0059] Fluid can be selectively dispensed from the supply box 106 and / or the auxiliary box 107 via one or more nozzles 114 (shown in dashed lines) connected to the base 104 and / or one or more nozzles 115 connected to the cleaning tool 105. The user can selectively fluidly connect the collection box 108 to the base airflow path 119 via the base 104 or to the cleaning tool airflow path 129 via the cleaning tool 105. Therefore, the user can selectively clean the surface 110 to be cleaned, such as carpets or floors, using the fluid dispensing and suction at the base 104, or clean target surfaces, such as specific points, small areas inaccessible to the base, pets, etc., using the fluid dispensing and suction at the cleaning tool 105.

[0060] In the example shown, supply tank 106 is configured to receive a first cleaning fluid, such as water, detergent, soap, fragrance, and / or other cleaning fluids. Auxiliary tank 107 is configured to receive a second cleaning fluid, such as a composition of water, detergent, soap, and / or cleaning fluids, for cleaning specific types of dirt on a surface. The second cleaning fluid may differ from the first cleaning fluid.

[0061] In some cases, the extractable cleaner 100 can be configured to deliver only a first cleaning fluid, only a second cleaning fluid, and / or a combination of the first and second cleaning fluids to the base 104 and / or the cleaning tool 105. For example, a user of the extractable cleaner 100 can choose to deliver only the first cleaning fluid, only the second cleaning fluid, or a combination of the first and second cleaning fluids from the base 104 and / or the cleaning tool 105 to the surface 114 to be cleaned. By a further example, the extractable cleaner 100 can be configured to deliver only the combination of the first and second cleaning fluids from the base 104 and / or the cleaning tool 105 to the surface 114 to be cleaned. In this example, the extractable cleaner 100 can be configured to deliver the combination of the first and second cleaning fluids until at least one of the first and / or second cleaning fluids is exhausted. Alternatively, in this example, when one of the first or second cleaning fluids is exhausted, the other of the first or second cleaning fluid can continue to be delivered to the surface 114 to be cleaned until exhausted.

[0062] In some implementations, the reinforcing fluid may be used in combination with the base cleaning fluid. For example, the second cleaning fluid may include the reinforcing fluid mixed with the base cleaning fluid. Alternatively or concurrently, the second cleaning fluid may include the reinforcing fluid, and the first cleaning fluid may include the base cleaning fluid. This approach can be used to avoid reactions between the reinforcing fluid and the base cleaning fluid, as well as the eventual decomposition of the reinforcing fluid, until they are mixed by a mixing valve. For example, a user may fill the supply tank with water to a specified level, for example, indicated by a fill line on the supply tank, and then add a predetermined amount of base cleaning fluid to the water in the supply tank.

[0063] The reinforcing fluid may include, for example, oxides such as hydrogen peroxide. The base cleaning fluid may include, for example, water, detergent, soap, fragrance, and / or other cleaning fluids. The reinforcing fluid may have a pH (hydrogen ion concentration) lower than that of the base cleaning fluid to prevent the reinforcing fluid from decomposing in the second cleaning fluid. In some embodiments, for example, the pH of the reinforcing fluid may be less than or equal to about 4.5, and the pH of the base cleaning fluid may be greater than or equal to about 9. Using the reinforcing fluid in the first and / or second cleaning fluid may be particularly useful when cleaning with cleaning tool 105, for example, for cleaning heavily soiled target areas.

[0064] In the example shown, supply tank line 109 (shown in dashed lines) fluidly connects supply tank 106 to mixing valve 111 (shown in dashed lines) to deliver a first cleaning fluid as input to mixing valve 111. Auxiliary tank line 113 (shown in dashed lines) fluidly connects auxiliary tank 107 to mixing valve 111 to deliver a second cleaning fluid as input to mixing valve 111. Mixing valve 111 is configured to supply one or more of the first cleaning fluid, the second cleaning fluid, and / or an adjustable mixture of the first and second cleaning fluids to one or more supply lines 112 (shown in dashed lines), and / or may be configured to allow a user to selectively supply only one of the first or second cleaning fluids to supply line 112. The fluid in supply line 112 may therefore include the first cleaning fluid and / or the second cleaning fluid. In embodiments where the reinforcing fluid and the base cleaning fluid are used in combination, the reinforcing fluid and the base cleaning fluid may be separated in one of the auxiliary tank and the supply tank to prevent any reaction between them, and then mixed, for example by a mixing valve or in an accessory, such as a T-connector, to induce a chemical reaction between the reinforcing fluid and the base fluid, thereby improving the cleanliness and / or stability of the mixed reinforcing fluid and base fluid.

[0065] Supply line 112 is fluidly connected to fluid switching valve 123 (shown in dashed lines). Fluid switching valve 123 can be selectively configured for a base supply state and a cleaning tool supply state. The state of fluid switching valve 123 can be selected by a mechanical and / or electrical switch or by directly physically manipulating fluid switching valve 123 or another component of the extraction cleaner 100 (e.g., suction switching valve 127 described herein). In some embodiments, for example, when the upright body 102 is vertically upright relative to the base 104, fluid switching valve 123 can be automatically placed in the cleaning tool supply state by a mechanical and / or electrical switch, such as... Figure 1 As shown, when the upright body 102 is tilted relative to the base 104 and is not in a vertical position, the fluid switching valve 123 can be automatically placed in the base supply state. Alternatively or additionally, the fluid switching valve 123 can be placed in the base supply state or the cleaning tool supply state by user input to the control panel 141.

[0066] When the fluid switching valve 123 is in the base supply state, one or more fluid supply lines 112 are fluidly connected via base supply line 117 (shown in dashed lines) to one or more fluid dispensing nozzles 114 connected to the base 104. Therefore, fluid from the one or more supply lines 112 can be directly and / or indirectly dispensed onto the surface 110 to be cleaned via the one or more fluid dispensing nozzles 114. In some embodiments, the one or more nozzles 114 may be arranged within an agitator cavity 116 (shown in dashed lines) defined within the base 104. Additionally or alternatively, the nozzles 114 may be arranged on the outer surface of the base 104.

[0067] When the fluid switching valve 123 is in the cleaning tool supply state, one or more fluid supply lines 112 are fluidly connected via the cleaning tool supply line 121 (shown in dashed lines) to one or more fluid dispensing nozzles 115 connected to the cleaning tool 105. Therefore, fluid from the supply line 112 can be directly and / or indirectly dispensed onto the target surface via the one or more fluid dispensing nozzles 115. For example, one or more nozzles 115 may be arranged inside the cleaning tool 105 and / or on the outer surface of the cleaning tool 105. In some embodiments, a pump 125 (shown in dashed lines) may be connected to the supply line 112 such that the pump 125 actuates fluid through the fluid switching valve 123 and to nozzle 114 or nozzle 115.

[0068] The recovery tank 108 is fluidly connected to the suction motor 118 (shown in dashed lines), the recovery conduit 120, and the suction switching valve 127. The suction switching valve 127 can be selectively configured for base suction or cleaning tool suction. The state of the suction switching valve 127 can be selected by a mechanical and / or electrical switch or by directly physically manipulating the suction switching valve 127 or other components of the extraction cleaner 100. In some embodiments, such as Figure 1 As shown, when the upright body 102 is vertically upright relative to the base 104, the suction switching valve 127 can be automatically switched to the cleaning tool suction state via a mechanical and / or electrical switch. Furthermore, when the upright body 102 is tilted relative to the base 104 and not in a vertical position, the suction switching valve 127 can be automatically switched to the base suction state. Alternatively, the suction switching valve 127 can be switched to either the base suction state or the cleaning tool suction state via user input to the control panel 141.

[0069] When the suction switching valve 127 is in the base suction state, the recovery conduit 120 and the recovery tank 108 are fluidly connected to the base airflow path 119 (shown in dashed lines) via the switching valve 127. The base airflow path 119 extends from the suction switching valve 127 to the suction inlet 131 at the bottom and then to the front of the base 104. When the suction switching valve 127 is in the base suction state, the suction motor 118 can thus actuate the fluid placed on the surface 110 to be cleaned into the suction inlet 131, through the base airflow path 119, and into the recovery tank 108.

[0070] When the suction switching valve 127 is in the cleaning tool suction state, the recovery conduit 120 and the recovery tank 108 are fluidly connected to the cleaning tool airflow path 129 via the switching valve 127. The cleaning tool airflow path 129 extends from the cleaning tool suction inlet 135 at the bottom of the cleaning tool 105, passes through the flexible hose 103, and reaches the suction switching valve 127. When the suction switching valve 127 is in the cleaning tool suction state, the suction motor 118 can establish a suction airflow to actuate the fluid placed on the target surface into the cleaning tool suction inlet 135, through the cleaning tool airflow path 129, and into the recovery tank 108.

[0071] In some embodiments, the recycling bin 108 may include a debris separator 122 (shown in dashed lines) configured to separate solid debris from liquid within the recycling bin 108. The debris separator 122 may also be configured to prevent liquid from flowing from the recycling bin 108 into the suction motor 118.

[0072] The agitator cavity 116 of base 104 may include an agitator 124 configured to engage the surface 110 to be cleaned. In some embodiments, the agitator 124 may be a longitudinal cylindrical body configured to rotate about a longitudinal axis of the body. The agitator 124 may be driven by a motor (not shown) to rotate about the longitudinal axis. In some embodiments, the agitator 124 may be configured to vibrate relative to base 104. The agitator 124 includes any combination of bristles, bristles, and / or microfibers. In some embodiments, the agitator 124 may be a non-absorbent agitator.

[0073] The extractor cleaner 100 may also include a controller 145 (shown in dashed lines). The controller 145 may be coupled to receive user input from the control panel 141 and / or input from sensors and / or switches in the extractor cleaner 100, and may be configured to provide control outputs for controlling components of the extractor cleaner 100 in response to inputs. For example, the controller 145 may be configured to control the state of the fluid switching valve 123 and / or the suction switching valve 127 in response to user input and / or in response to a sensor or switch that responds to the position of the upright body 102 relative to the base 104. Alternatively or additionally, the controller 145 may be configured to control the operation of the mixing valve 111, the suction motor 118, the pump 125, and / or a motor (not shown) for driving an agitator. Many configurations of the controller 145 will be apparent from this disclosure.

[0074] The upright body 102 may have a handle 137 attached to its end for a user to grip, and the base 104 may include one or more wheels 139 attached thereto and positioned to engage a surface 110 to be cleaned. The wheels 139 allow the base 104 to be manipulated along the surface 110 to be cleaned. To perform cleaning using suction and fluid delivery at the base 104, the user can configure the suction switching valve 127 to be in a base suction state and the fluid switching valve 123 to be in a base supply state. The user can grip the handle 137 and push and / or pull the base 104 along the surface 110 to be cleaned. Fluid 139 may be dispensed directly and / or indirectly from the nozzle 114 onto the surface 110 to be cleaned, for example, during forward and / or backward movement of the base 104, and the surface 110 to be cleaned with fluid thereon may be agitated by the agitator 124. At least a portion of the fluid 139 can be recovered from the surface 110 to be cleaned by the operation of the suction motor 118 to establish a suction for pumping the fluid into the base airflow path 119 and the recovery box 108.

[0075] To perform cleaning using suction and fluid delivery at the cleaning tool 105, the user can configure the suction switching valve 127 to be in the cleaning tool suction state and the fluid switching valve 123 to be in the cleaning tool supply state. The user can grasp the cleaning tool 105 and manipulate it on the target surface. Fluid 143 can be delivered directly and / or indirectly to the target, for example, in response to the user's operation of a trigger on the cleaning tool. At least a portion of the fluid 143 can be recovered from the surface 110 to be cleaned by operation of the suction motor 118 to establish suction for drawing fluid into the cleaning tool airflow path 129 and the recovery tank 108.

[0076] Supply tank 106 and / or auxiliary tank 107 may be configured to provide, jointly and / or separately, a fabric / cleaning composition for removing stains and dirt from a substrate (surface 110 to be cleaned), such as carpets and fabrics. The fabric / cleaning composition is preferably formed by a combination of a water-based cleaning solution and a water-based oxidizing solution just before application to the substrate. In some embodiments, the water-based cleaning solution may be a first cleaning fluid received in supply tank 106, e.g., a base cleaning fluid, and the water-based oxidizing solution may be a second cleaning fluid received in auxiliary tank 107, e.g., a reinforcing fluid. It is contemplated to use two separate solutions and mix them as needed to maintain storage stability and optimize cleaning effectiveness, while allowing for the determination and effective levels of the active ingredient on selected surfaces at the desired pH.

[0077] The first water-based cleaning solution preferably contains a mixture of components in a relatively alkaline solution (pH > 7.0), and the second water-based oxidation solution contains a mixture of components in a relatively acidic solution (pH < 7.0). The first water-based cleaning solution described herein comprises a water-based solution, as described above, which is a relatively alkaline solution (pH > 7.0). More preferably, the pH of the first water-based cleaning solution is in the range of 8.5 to 10.0, including all values ​​and increments therein. Thus, the pH is 8.5, 8.6, 8.7, 8.8, 8.9, 9.0, 9.1, 9.2, 9.3, 9.4, 9.5, 9.6, 9.7, 9.8, 9.9, or 10.0. A particularly preferred pH range is 8.5 to 9.5, or even more preferably 9.0 to 9.5. The second water-based oxidation solution described herein also comprises a water-based solution, as described, which is a relatively acidic solution (pH < 7.0). More preferably, the pH of the oxidizing solution is less than or equal to 5.0, and preferably falls within the range of 3.0 to 5.0, including all individual values ​​and increments therein. Therefore, the pH is 3.0, 3.1, 3.2, 3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 4.0, 4.1, 4.2, 4.3, 4.4, 4.5, 4.6, 4.7, 4.8, 4.9, or 5.0.

[0078] The second aqueous-based oxidation solution contains peroxide compounds, specifically peroxide anions (O2). 2- Or compounds with OO single bonds, such as H2O2. In the combination of the first and second aqueous solutions, a peroxide is then provided and activated by the carbonate component to bond with the given substrate for cleaning, and in a particularly preferred case, the H2O2 is in the range of 0.20 wt.% to 0.70 wt.%, including all values ​​and increments therein, such as 0.20 wt.%, 0.30 wt.%, 0.40 wt.%, 0.50 wt.%, 0.60 wt.%, and 0.70 wt.%. A particularly preferred range for the weight percentage of the H2O2 compound on which the treatment for removing stains and dirt depends is 0.30 wt.% to 0.40 wt.%.

[0079] Therefore, the peroxides discussed herein are expected to include water-soluble peroxide reagents, including hydrogen peroxide, as well as inorganic alkali metal peroxides in acidic solutions with pH < 7.0. Such peroxides therefore include sodium peroxide (Na₂O₂) and organic peroxides, such as urea hydroperoxide (CH₆N₂O₃) and melamine hydroperoxide (C₃H₈N₆O₂). Alkyl hydroperoxides (RO-OH), where R is alkyl, such as in methyl hydroperoxide (CH₃OOH), tert-butyl hydroperoxide ((CH₃)₃C-O-OH), or aryl peroxides, where R is aryl, such as in benzoyl peroxide (C₃OOH). 14 H 10 The peroxides described herein may also be used with or without peroxidase (an enzyme that catalyzes the decomposition of peroxides).

[0080] The first water-based cleaning solution preferably contains the following components: (1) a nonionic surfactant, preferably an alcohol ethoxylate, which relates to a nonionic surfactant containing a hydrophobic alkyl chain linked via an ether bond to a hydrophilic ethylene oxide chain, which can be provided by Dow's Ecosurf™ EH-9 (trade name, which is ethoxylated propoxylated 2-ethyl-1-hexanol, CAS No. 64366-70-7) and Ecosurf™ EH-6 (also available from Dow, CAS No. 64366-70-7) and alkyl polyglucan glycosides (APG, which refers to the reaction product of fatty alcohols and sugars and is characterized by a sugar unit and one or more hydrophobic alkyl chains, such as decyl glucoside available from Brenntag, CAS No. 68515-73-1); (2) carbonate anions (CO3-) 2-(3) a source, such as a water-soluble alkali metal carbonate or alkali metal bicarbonate; (4) a metal chelating agent, such as ethylenediamine-N,N'-disuccinic acid (EDDS), more preferably biodegradable (S,S)-ethylenediamine-N,N'-disuccinic acid (EDDS, CAS No. 178949-82-1); (5) an organic alkyl alcohol, preferably ethanol; (6) a dispersant polymer, a preferred example of which is Acusol 505N (acrylic polymer, CAS No. 60472-42-6); (7) a metal hydroxide, such as sodium hydroxide, to provide a desired pH greater than 7; (8) a free radical scavenger; (9) a fragrance and / or odor control agent or other aesthetic agent; and (10) water.

[0081] Regarding free radical scavengers, they are preferably selected from aliphatic amino acids, with glycine (C2H5NO2, CAS No. 56-40-6) being a preferred choice. Other free radical scavengers are contemplated to include sarcosine (N-methylglycine), lysine, serine, glutamic acid, and mixtures thereof. Free radical scavengers described herein are also contemplated to be selected from 2-methoxyethylamine, glucosamine, morpholine, piperidine, ethylamine, and 3-amino-1-propanol, and mixtures thereof. It is anticipated that such free radical scavengers can capture free radicals, such as hydroxyl radicals (HO). . This is to reduce or eliminate the damage that such free radicals may cause to a given substrate fabric.

[0082] The second aqueous oxidizing solution preferably contains the following components: (1) a peroxide compound, such as hydrogen peroxide (H2O2); (2) a nonionic surfactant, preferably an alcohol ethoxylate, which refers to a nonionic surfactant containing a hydrophobic alkyl chain linked via an ether bond to a hydrophilic ethylene oxide chain, which can be provided by Dow's Ecosurf™ EH-9 (trade name, which is ethoxylated propoxylated 2-ethyl-1-hexanol, CAS No. 64366-70-7) and Ecosurf™ EH-6 (also available from Dow, CAS No. 64366-70-7); (3) an anionic surfactant, a preferred example of which is sodium octanoyl sulfonate (CAS No. 13419-61-9); and (4) a dispersant polymer, a preferred example of which is Acusol. 460N, which is a carboxylated polyelectrolyte copolymer based on maleic anhydride / olefin copolymer; (5) a multifunctional aliphatic organic acid to provide a desired pH of less than 7.0, preferably citric acid (CAS No. 77-92-9); (6) an antifoaming agent, preferably XFO-64, a silicone polymer; and (6) water.

[0083] In the above text, it should be noted that the carbonate anion (CO3) 2The sources of the source and the metal chelating agent are limited to the first aqueous cleaning solution. Furthermore, the source of the peroxide compound is limited to the second aqueous oxidizing solution. Therefore, it should be understood that other identified components (e.g., nonionic surfactants, organic alkyl alcohols, free radical scavengers, fragrances and / or odor control agents, anionic surfactants, dispersant polymers) may originate from the first aqueous oxidizing solution and / or the second aqueous oxidizing solution.

[0084] Referring now to Table 1, which identifies the preferred formulations of the two-component fabric and cleaning compositions described herein, all expressed as weight percentages. Table 1 also serves as the basis for describing preferred methods for preparing the two-part solutions for placement in two chambers of a cleaning apparatus, and for the molar concentration levels of the components obtained after mixing the two solutions for a given substrate.

[0085] Table 1

[0086] Preferred formulation

[0087]

[0088]

[0089] The preferred filling and mixing of the water-based cleaning solution and the water-based oxidation solution is carried out as follows: A preferred formulation of the water-based cleaning solution (Column I) is poured into a first tank on the cleaning device, such as supply tank 106, and then preferably diluted with 20 parts water to 1 part cleaning solution. A preferred formulation of the water-based oxidation solution (Column II) is poured into a second tank on the cleaning device, such as auxiliary tank 107. Column III shows the preferred weight percentage of the active components of the oxidation solution. Column IV shows the preferred weight percentage of the cleaning solution components after a 20:1 water dilution. The water-based cleaning solution diluted with water at a 20:1 ratio is then combined with the water-based oxidation solution at a ratio of 10 parts diluted water-based cleaning solution (Column IV) to 1 part water-based oxidation solution.

[0090] The weight percentages of the components present in the preferred mixed solution and applied to a given surface for cleaning are then shown in column V. In column V, the five (5) components for cleaning include water, peroxides, metal chelators, free radical scavengers (preferably shown as glycine), and carbonate anions. Additionally, it should be noted that the pH of the combined and mixed water-based cleaning and water-based oxidation solutions is preferably greater than or equal to 9.0, and more preferably in the pH range of 9.0 to 10.0, including all individual values ​​and increments therein, such as 9.0, 9.1, 9.2, 9.3, 9.4, 9.5, 9.6, 9.7, 9.8, 9.9, and 10.0. A particularly preferred pH range for the combined water-based cleaning and water-based oxidation solutions is 9.4 to 9.6.

[0091] Furthermore, as can be seen from Table 1, the carbonate anions (CO3-) present in the mixed solution 2- The level of carbonate anion (preferably provided by a metal bicarbonate such as sodium bicarbonate) is 0.14 wt.%. However, in the broader context of this disclosure, the level of carbonate anion in the mixed solution is preferably from 0.10 wt.% to 0.40 wt.%, including all individual values ​​and increments therein, such as 0.15 wt.%, 0.20 wt.%, 0.25 wt.%, 0.30 wt.%, 0.35 wt.%, or 0.40 wt.%. A particularly preferred range for carbonate anion in the mixed solution is 0.14 wt.% to 0.25 wt.%. Furthermore, while sodium bicarbonate in the aqueous cleaning solution preferably provides one source of carbonate anion, it is contemplated herein that sources of carbonate anion include other alkali metal carbonates, such as sodium carbonate (NaCO3), and other bicarbonates, such as potassium bicarbonate.

[0092] It should be noted that metal chelating agents available in water-based cleaning solutions and subsequently present in mixed solutions applied to a given substrate should be understood herein as any compound that binds to metal ions, particularly transition metal ions such as iron and copper. Furthermore, the metal chelating agent is preferably a divalent metal ion that binds to water hardness, such as magnesium (Mg²⁺). 2+ ) and calcium (Ca 2+ Chelating agents with relatively low binding affinity and relatively high binding affinity for transition metal ions, such as iron and copper, are preferred. These are preferably provided by EDDS. Metal chelating affinity refers to the stability constant (also called the formation constant or binding constant), which reflects the strength of the interaction between the reagents that form a complex together.

[0093] Therefore, the preferred properties of the metal chelating agent described herein are for Cu in a preferred pH range of 9 to 10. 2+ It has a relatively high binding constant and reacts well with water hardness ions such as Ca2+. 2+ and Mg 2+ It possesses a relatively low binding constant. Furthermore, it is desirable for the metal chelator to be readily biodegradable to prevent accumulation in the environment. Table 2 below shows the logK values ​​(K is the binding constant) of the preferred metal chelator EDDS at pH 7.0:

[0094] Table 2

[0095] Binding constant of EDDS

[0096]

[0097] Although preferably shown in Table 1, the metal chelating agent EDDS is present in the mixed solution at a level of 0.09 wt.%, it is contemplated herein that the level of the metal chelating agent may range from 0.05 wt.% to 0.15 wt.%, including all individual values ​​and increments therein. A particularly preferred range is 0.08 wt.% to 0.13 wt.%. It is anticipated that the metal chelating agents preferred herein (which, as mentioned above, more actively bind copper and iron ions found in tap water) are therefore relatively more effective at neutralizing these metals in tap water, which could otherwise catalyze the decomposition of hydrogen peroxide to form hydroxyl (OH) radicals and lead to reduced bleaching activity and fabric damage.

[0098] As also shown in Table 1, the preferred level of the free radical scavenger in the mixed solution bonded to the substrate for cleaning is 0.02 wt.% to 0.80 wt.%, including all individual values ​​and increments therein.

[0099] Table 3 below presents the range of molar concentrations of the identified components (peroxides, metal chelators, carbonate anions, and free radical scavengers) in aqueous solutions when the cleaning and reinforcing solutions are mixed and applied to the substrate being cleaned, wherein the pH of the mixture is greater than or equal to 9.0 and ranges from 10.0. Molar concentration refers to the number of moles of the component per liter of solution.

[0100] Table 3

[0101] Molar concentration of key components applied to the substrate used for cleaning

[0102]

[0103] As shown in Table 2, the molar concentrations of the four key components after mixing can be easily determined by the weight percentages of the components identified in the mixed water-based cleaning solution and water-based oxidation solution, examples of which are provided in Table 1. The formula for converting the concentration in weight percentage to molar concentration is: Molar concentration = ((weight percentage) * 10) / (molecular weight of 100% active material).

[0104] Therefore, this disclosure provides a composition, method, and kit for cleaning carpets or fabrics, which preferably uses two separate solutions and mixes them as needed, providing a defined level of the components at a desired pH on a selected surface to optimize cleaning performance.

[0105] Figure 2 This is a 3D view of the 100a pull-out cleaner. The 100a pull-out cleaner can be... Figure 1An example of a pull-out cleaner 100. The example pull-out cleaner 100a shown includes an upright body 102a, a base 104a pivotally connected to the upright body 102a, a flexible hose 103a, a cleaning tool 105a having a cleaning tool suction inlet 135a connected to the end of the flexible hose 103a, a supply box 106a, an auxiliary box 107a, a recycling box 108a, and a tool for cleaning along the surface 110 (to be cleaned). Figure 1 The wheel 139a and handle 137a of the movable base 104a.

[0106] The recycling bin 108a is removably connected to the upright body 102a and fluidly connected to the base 104a and cleaning tool 105a via the suction switching valve 127a, allowing the suction motor 118a ( Figure 5 Suction can be established to draw debris and / or liquid through the base 104a or cleaning tool 105a and into the recovery tank 108a. Cleaning fluid can be supplied from the supply tank 106a and / or the auxiliary tank 107a to the nozzles on the base 104a and / or cleaning tool 105a via the fluid switching valve 123a. The upright body 102a may include a control panel 141a. The control panel 141a may be configured to receive one or more inputs from the user. For example, the control panel 141a may be configured to receive inputs corresponding to cleaning actions (e.g., increasing / decreasing fluid flow rate, pulsed / modulated fluid flow rate, control of fluid and / or suction on the base 104a or cleaning tool 105a, increasing / decreasing suction, etc.).

[0107] Base 104a includes a frame 201, a suction nozzle 202, and a door 204. In the example shown, the suction nozzle 202 is removable from base 104a, and the door 204 is not removable from base 104a. In other examples, the suction nozzle 202 and / or the door 204 may be removable from base 104a, or the suction nozzle 202 and / or the door 204 may not be removable from base 104a. As used herein, when used in relation to a first component or assembly and a second component or assembly, the term "removable" means that the first component or assembly can be completely separated from the second component or assembly by a user without the use of tools, and without damaging either the first or second component or assembly, such that the first component or assembly can be re-engaged with the second component or assembly and operated for its intended purpose.

[0108] Figure 3 and Figure 4 This is a perspective view of the base 104a of the pull-out cleaner 100a. Figure 3 The base 104a is shown, with the suction nozzle 202 removed from the base 104a and the door 204 in the closed position. Figure 4A door 204 is shown pivoted to the open position and not removable from the base 104a. Normally, the suction nozzle 202 can be removed from the base 104a for access to the agitator chamber 116a and the agitator 124, as shown. Figure 3 As shown, then door 204 can... Figure 3 The indicated closing position pivots to Figure 4 The open position is shown. When door 204 is in... Figure 4 With the door 204 in the open position as shown, the agitator cavity 116a and the agitator 124 can be accessed for cleaning or maintenance. In some embodiments, when the door 204 is in the open position, the agitator 124 can be removed from the agitator cavity 116a for cleaning and maintenance.

[0109] The suction nozzle 202 according to this disclosure can be provided in various configurations. Figure 5 This is a cross-sectional view of a portion of an exemplary extractable cleaner 100a, showing a suction nozzle 202 attached to a base 104a. Figure 6 This is a bottom-view perspective view of the suction nozzle 202. Figure 7 This is a side sectional view of a portion of the extraction cleaner 100a, wherein the connector end 610 of the suction nozzle 202 is disconnected from the base 104a. In the exemplary embodiment shown, the suction nozzle 202 has a front wall 602, a rear wall 604, a first side wall 606, a second side wall 608, a connector end 610 including a spring-loaded connector 612, and a first toe-in feature 614 and a second toe-in feature 616.

[0110] A suction nozzle channel 502 is formed between the front wall 602, the rear wall 604, and the first side wall 606 and the second side wall 608. The suction nozzle channel 502 extends from a suction inlet 131a at the front of the nozzle to a suction outlet 618 at the rear of the nozzle, and gradually decreases in width from a first width W1 at the suction inlet 131a to a smaller second width W2 at the suction outlet 618. In some embodiments, for example, the width W1 of the suction nozzle channel 502 at the suction inlet 131a may be 90% or more of the maximum width W3 of the suction nozzle 202, and the width W2 of the suction nozzle channel 502 at the suction outlet 618 may be 25% or less of the width W3 of the suction nozzle 202.

[0111] In the example shown, the suction nozzle is generally L-shaped, and the suction inlet 131a is positioned adjacent to the surface 110 to be cleaned during operation of the suction cleaner 110a. The suction outlet 618 is oriented downward relative to the top 620 of the suction nozzle 202 and has a seal 622. See also... Figure 11When the suction nozzle 202 is assembled to the base 104a, the rear wall 604 of the suction nozzle 202 faces the top surface 1002 of the door 204. A seal 622 on the suction outlet 618 is removably coupled to an opposing, upwardly oriented seal 1102 on the suction inlet 1104 of the internal suction conduit 504 disposed in the base 104a. In the example shown, the suction inlet 1104 of the internal suction conduit 504 is adjacent to the opening 302 through the door 204 (see also...). Figure 10 Arrangement. An internal suction conduit 504 extends through the base 104a and is fluidly connected via a bend conduit 510 to the base inlet port 512 of the suction switching valve 127a. A suction nozzle passage 502 is removably connected to the internal suction conduit 504 to at least partially define a base airflow path 119a extending from the suction inlet 131a and through the base 104a. In the illustrated example, the suction nozzle passage 502 is in fluid communication with both the internal suction conduit 504 and the base inlet port 512 of the suction switching valve 127a to define the base airflow path 119a.

[0112] The outlet port 514 of the suction switching valve 127a is fluidly connected to a recovery conduit 120a, which is formed as part of the recovery tank 108a. Figure 5 In this configuration, the suction switching valve 127a is in the base suction state, and the recovery conduit 120a is fluidly connected to the base airflow path 119a via the switching valve 127a. When the suction switching valve 127a is in the base suction state, the suction motor 118a can establish suction at the suction inlet 131a to actuate fluid placed on the surface 110 to be cleaned into the suction inlet 131a, through the base airflow path 119a, through the recovery conduit 120a, and into the recovery tank 108a. In the base suction state, the suction switching valve 127a prevents fluid communication between the recovery conduit 120a and the cleaning tool inlet port 516 of the suction switching valve 127a.

[0113] According to this disclosure, a plurality of latching configurations for removably connecting the suction nozzle 202 to the base 104a will be apparent. In the exemplary embodiment shown, the suction nozzle 202 is removably connected to the base 104a via a spring-loaded connector 612 at the connector end 610 of the suction nozzle 202 and a first lead-beam feature 616 and a second lead-beam feature 618 at the front end 622 of the nozzle. Figure 8 This is a cross-sectional view of a spring including a portion of the suction nozzle 202 of the spring-loaded connector 612. As shown, the spring-loaded connector includes a connector body 802 disposed within a housing 804.

[0114] Figure 9This is a top perspective view of the connector body 802 and a first spring 902 and a second spring 904 for applying force to the connector body 802 toward the latched position. The connector body 802 has a first latch 906 and a second latch 908 extending outwardly from its end, and a release handle 910 defined at its top. The first spring 902 is coupled to a post 912 on a first side of the connector body 802, and the second spring 904 is coupled to a post (not shown) on a second side of the connector body 802. The springs 902 and 904 can be positioned against the inner surface of the suction nozzle 202 to apply force outwardly from the housing 804 to the first latch 906 and the second latch 908 at the connector end 610. Applying force to the first latch 906 or the second latch 908 can overcome the force applied by the springs 902 and 904 and cause the first latch 906 and / or the second latch 908 to enter the housing 804. When the force is released, springs 902 and 904 can push the first latch 906 and the second latch 908 outward from the housing 804.

[0115] Refer again Figure 6 and Figure 7 A first lead-beam feature 614 is disposed on a first side of the suction nozzle 202, and a second lead-beam feature 616 is disposed on a second side of the suction nozzle 202. The first lead-beam feature 614 and the second lead-beam feature 616 open downwards and are positioned to extend into associated openings 1106, 1108 defined in the frame 201 of the base 104a. Figure 11 The associated latches 1112 and 1114 are placed on the base 104a. Figure 11 )superior.

[0116] The suction nozzle 202 can be mounted onto the base 104a by inserting the first lead feature 614 and the second lead feature 616 into the associated openings 1106, 1108 to rest on the latches 1112, 1114, and then pivoting the suction nozzle 202 about the latches 1112, 1114 to rotate the connector end 610 of the suction nozzle 202 toward the top of the base 104a. The connector end 610 can then be latched to the base 104a via the connector 612.

[0117] For example, when the suction nozzle 202 moves to Figure 8In the closed position, the bottom surfaces 914, 916 of the first latch 906 and the second latch 908 engage the angled top surface 806 of the latch 808 on the frame 201 of the base 104a, thereby overcoming the force of the springs 902, 904 to allow the connector body 612 to enter the housing 804. When the suction nozzle 202 is pushed downward, the latches 906, 908 are pushed inward sufficiently to pass over the front surface 810 of the latch 808. The latches 906, 908 then extend outward from the housing 804 under the force of the springs 906, 908, with the top surfaces 918, 920 of the first latch 906 and the second latch 908 extending below the bottom surface 812 of the latch 808. Interference between the top surfaces 918, 920 of the first latch 906 and the second latch 908 and the bottom surface 812 of the snap 808 removably connects the connector end 610 of the suction nozzle 202 to the base 104a.

[0118] To release the connector end 610 of the suction nozzle 202 from the base 104a, the user can actuate the release handle 910 in a direction away from the latch 808 to overcome the force of the springs 902, 904 until the first latch 906 and the second latch 908 disengage from the front 810 of the latch 808. The user can then pull the connector end 610 upwards to disconnect the connector end 610 of the suction nozzle 202 from the base 104a, and then pivot the suction nozzle 202 about the latches 1112, 1114 in a direction away from the base 104a, for example, pivoting to... Figure 7 The positions shown. Anterior bundle features 614, 616 can then be accessed from openings 1106, 1108 ( Figure 11 (Extract) to remove the suction nozzle 202 from the base 104a.

[0119] Although the exemplary embodiment shown includes a spring-loaded connector 612 on the suction nozzle 202, many other configurations for removably coupling the suction nozzle 202 to the base 104a will be apparent according to this disclosure. For example, the spring-loaded connector 612 may be provided on the base 104a, or known bump fittings may be provided on the suction nozzle 202 or the base 104a. Other known latching configurations may be implemented on the base 104a and / or the suction nozzle 202.

[0120] The gate 204 according to this disclosure can be provided in various configurations. Figure 10 This is a top perspective view of an exemplary door 204. Door 204 includes a top surface 1002, wherein an opening 302 through the top surface 1002 is adjacent to a suction inlet 1104 of an internal suction conduit 504. Figure 11Arrangement. As previously described, the suction outlet 618 of the suction nozzle 202 is connected to the suction inlet 1104 adjacent to the opening 302 for fluid connection of the suction nozzle channel 502 to the internal suction conduit 504. Therefore, the base airflow path 119a extends from the suction inlet 131a and through the opening 302.

[0121] A first cover 1004 and a second cover 1006 are disposed on the top surface 1002 of the door 204 for covering at least a portion of the associated fluid supply connectors 1116, 1118. Figure 11 The first cover 1004 and the second cover 1006 are positioned on either side of the opening 302 and extend forward from the opening 302 and then outward toward the respective side of the door 204. The sidewalls 1008, 1010 of the first cover 1004 and the second cover 1006, and the top surface 1002 of the door 204 define a cavity 1012 for receiving the connector end 610 of the suction nozzle 202.

[0122] In some embodiments, the first cover 1004 and the second cover 1006 can be removed from the top surface 1002. Figure 11 This is a top-view perspective view of door 204, in which the first cover 1004 and the second cover 1006 have been removed. Figure 12 This is a 3D view of door 204 from below. Figure 13 This is a perspective view showing the fluid supply connection 1116. As shown, each of the fluid supply connections 1116 and 1118 includes an inlet port 1120, a supply fitting 1122, and a fluid dispensing nozzle 114a. The inlet port 1120 and the fluid dispensing nozzle 114a can be mounted to the top surface 1002 via fasteners that extend into the door 204 through associated mounting bosses 1126 and 1128. The inlet port 1120 can be fluidly connected to the fluid dispensing nozzle 114a via the supply fitting 1122 arranged above the top surface 1002 of the door 204.

[0123] Especially Figure 12 As shown, door 204 has a bottom surface 1202, and the front portion of each of the fluid dispensing nozzles 114a extends through an associated opening 1204 that passes through the top surface 1002 and bottom surface 1202 of door 204. The fluid dispensing nozzles 114a are thus exposed at the bottom surface 1202 of the door for dispensing fluid onto the surface 110 to be cleaned. An inlet port 1120 also extends through an associated opening 1206 that passes through the top 1002 and bottom surface 1202 of door 204 for removable fluid coupling to a base supply line 117a below the bottom surface 1202 of door 204.

[0124] When door 204 is in the closed position, its bottom surface 1202 rests on and is supported by the frame 201 of base 104a. In some embodiments, when suction nozzle 202 is engaged with base 104a, door 204 is held against frame 201 of base 104a by suction nozzle 202. In other embodiments, door 204 may be secured to frame 201 of base 104a using a latch or lug fitting (not shown) on door 204 or base 104a. In some embodiments, one or more springs (not shown) may be provided between door 204 and base 104a to apply force to door 204 away from base 104a toward the open position. A release button (not shown) for releasing door 204 from base 104a may be provided on door 204 or base 104a.

[0125] refer to Figure 12 and Figure 15 The front end 1208 of the door 204 can be pivotally connected to the frame 201 of the base 104a via a first pivot pin 1210 and a second pivot pin 1212 extending outward from opposite side surfaces 1214, 1216 of the door 204. Each of the pivot pins 1210, 1212 can extend into the frame 201 of the base 104a. Therefore, the door 204 can be pivotally connected around the pivot pins 1210, 1212, for example as... Figure 7 The closing position shown and as Figure 15 The door pivots between the shown open positions. In some embodiments, pivot pins 1210, 1212 may be secured to the door 204 and the frame 201 such that the door 204 cannot be removed from the base 104a.

[0126] When door 204 is in the closed position, for example... Figure 16 As shown, the bottom surface 1202 of the door 204 defines at least a portion of the front wall 1602 and the top wall 1604 of the agitator cavity 116a. The suction nozzle 202 does not form any part of the agitator cavity 116a. At least a portion of the rear wall 1606 of the agitator cavity 116a is defined by the frame 201 of the base 104a. The agitator 124 is supported in the agitator cavity 116a in a known manner. When the door 204 is in the closed position, as... Figure 3 and Figure 5 As shown, the user cannot access the agitator from the top of the base 104a. When the door 204 is in the open position, as... Figure 4 and Figure 15 As shown, the user can access the agitator 124 from the top of the base 104a for cleaning or maintenance.

[0127] When door 204 is in the closed position, inlet port 1120 is connected to base supply line 117a, and when door 204 is in the open position, inlet port 1120 is disconnected from base supply line 117a. According to this disclosure, various configurations for connecting and disconnecting inlet port 1120 from base supply line 117a when door 204 moves between the open and closed positions will be apparent. (See reference...) Figure 13 and Figure 14 For example, the base supply line 117a may have a connector 1402 disposed at its end for mating with the inlet port 1120 and removably fluidly connecting the base supply line 117a to the inlet port 1120. When the door 204 is in the closed position, for example, as Figure 7 As shown, inlet port 1120 mates with connector 1402 to fluidly connect nozzle 114a to base supply line 117a. When door 204 is pivoted to the open position, for example as... Figure 15 As shown, the inlet port 1120 is disconnected from the supply line connector 1402 and the base supply line 117a, but the nozzle 114a, the supply fitting 1122 and the inlet port 1120 remain connected to the door 204.

[0128] When the door 204 and the suction nozzle 202 are assembled to the base 104a, the nozzle 114a is fluidly connected to the base supply line 117a for distributing cleaning fluid 1608, including a first cleaning fluid 1608 from the supply tank 106a and / or a second cleaning fluid from the auxiliary tank 107a, directly or indirectly to the surface 110 to be cleaned. For example, Figure 16 As shown, nozzle 114a can be positioned to spray cleaning fluid 1608 towards the inlet 131a of suction nozzle 202 in front of agitator 124. In some embodiments, it may be advantageous to spray cleaning fluid 1608 such that it contacts the surface 110 to be cleaned within a distance D of approximately 1.5 cm from the rear wall 1202 of door 204, and preferably within approximately 5 mm. This allows for effective cleaning and rapid drying of the surface 110, as at least a portion of the cleaning fluid 1608 can be immediately removed from the surface 110 by suction from suction inlet 131a.

[0129] like Figure 17As shown, each of the nozzles 114a sprays cleaning fluid 1608 in an associated fan-shaped pattern, and the nozzles 114a are positioned at a distance from the surface 110 to be cleaned such that the combined fan-shaped spray of the nozzles 114a extends across the entire width W1 of the suction inlet 131a. In some embodiments, the fan-shaped spray of cleaning fluid 1608 from the nozzles 114a may overlap or separate by 5 mm or less at a position 1702 between the nozzles 114a, at which point they all impact the surface 110 to be cleaned. The extraction cleaner according to this disclosure may include any number of spray nozzles 114a, including only one fluid dispensing nozzle 114a. By spraying fluid in a fan-shaped pattern from one or more fluid dispensing nozzles 114a, the cleaning fluid 1608 can cover the entire width W1 of the suction inlet 131a for effective cleaning.

[0130] Although the exemplary embodiment shown includes a removable suction nozzle 202 and a non-removable door 204, the door 204 being pivotally attached to the front portion of the base 104a adjacent to the front portion of the base 104a at the front end 1208 of the door 204, various configurations of the suction nozzle 202 and the door 204 can be provided in the extraction cleaner according to the present disclosure. For example, the suction inlet 131a and the suction nozzle channel 502 can be defined by the inner surface of the door 204 and separate channel assemblies removably or non-removably coupled to the inner surface of the door 204.

[0131] In some embodiments, the door 204 may be configured to pivot at the rear end of the door 204 adjacent to the rear end of the upright body 102a and the rear end of the base 104a. In another embodiment, for example as... Figure 18 As shown, the frame 201a of the base 104b may include a suction inlet 131b extending across the base 104b, and a removable or non-removable door 204a may be coupled to the base 104b and the suction inlet 131b. When the door 204a is assembled to the base 104b, the suction inlet 131b may be fluidly coupled to a suction nozzle channel in the removable or non-removable door 204a. In some embodiments, the door 204a may be pivotally attached to the base 104b at a rear portion adjacent to the upright body 102a and may be rotated to a closed position in which the suction nozzle channel is in fluid communication with the inlet 131b defined by the base 104a.

[0132] In another implementation, for example, Figure 19 and Figure 20As shown, the suction nozzle 202a can be removably coupled to the door 204b, and when assembled to the base 104c, the bottom surface 2002 of the suction nozzle 202a can define at least a portion of the agitator cavity 116b. The suction nozzle 202a can rest on and be supported by the door 204b, and can be removably coupled to the door 204b or the base 104c by means of a latch, a protrusion fitting, etc. The door 204b can be pivotally coupled to the base 104c via a pivot 2004 at the rear of the door 204b, and can pivot to an open position when the suction nozzle 202a is removed from the base 104c, such as... Figure 20 As shown. Door 204b may be removable from base 104c or not, and fluid dispensing nozzle 114a may be attached to door.

[0133] The fluid dispensing nozzle 114 according to this disclosure can be provided in various configurations. For example, one or more fluid dispensing nozzles 114 may be coupled to an inlet adjacent to the sidewall of the door 204, rather than to an inlet adjacent to the connector end 610. In another embodiment, for example as Figure 21 As shown, one or more fluid dispensing nozzles 114b may be coupled to the sidewalls 2102, 2104 of the frame 201b of the base 104d. The nozzles 114b may be coupled to associated arms 2106, 2108, which are pivotally coupled to the sidewalls 2102, 2104 to allow the nozzles 114b to pivot downward toward the surface 110 to be cleaned to access the agitator 124. In another embodiment, as... Figure 22 As shown, one or more nozzles 114c can be coupled to the top and rear of the base 104e adjacent to the upright body 102a. The nozzles 114c can be coupled to associated arms 2202, 2204, which are pivotally coupled to the base 104e to allow the nozzles 114a to pivot upwards, as... Figure 22 As shown, this is for accessing the agitator 124. In some embodiments, a door (e.g., door 204) may be mounted to the base 104e, with arms 2202, 2204 positioned below the bottom surface of the door. When the door is removed, arms 2202, 2204 may be spring-loaded to pivot upwards, thereby allowing access to the agitator 124.

[0134] According to this disclosure, many construction methods for directly or indirectly distributing cleaning fluid to the surface 110 to be cleaned will also be apparent. For example, a wicking construction can be provided instead of using one or more discrete fluid distribution nozzles 114a. For example... Figure 23As shown, the wicking structure 2302 may include a hollow body 2304 and an absorbent fabric 2306 connected to the hollow body 2304. The absorbent fabric may have a first end 2308 in fluid communication with the interior 2310 of the hollow body 2304 and a second end 2312 defining a plurality of drip points 2314. In the example shown, the drip points 2314 are a series of triangular-shaped tips formed in the absorbent fabric 2306. The hollow body 2304 may be mounted to a door (e.g., door 204) or a base (e.g., base 104a) and fluidly connected at one or both ends to base supply lines 117, 117a. Fluid from the base supply lines 117, 117a can be wicked out from the interior 2310 of the hollow body 2304 by the absorbent fabric 2306 and dripped directly or indirectly from the drip points 2314 onto the surface 110 to be cleaned.

[0135] In another embodiment, the agitator 124 may have absorbent material thereon moistened with cleaning fluid, for example, from one or more nozzles 114a or absorbent fabric 2306. The absorbent material of the agitator 124 may be saturated with cleaning fluid, and the centrifugal force associated with rotating the agitator 124 may spray the cleaning fluid outward from the absorbent material and directly and / or indirectly onto the surface 110 to be cleaned. In another embodiment, a channel (e.g., a U-shaped channel) may be formed on the inner surface of a door (e.g., door 204) and may extend across the width of a suction inlet (e.g., inlet 131a). The channel may be fluidly connected to base supply lines 117, 117a. Multiple outlets may be formed in the channel to allow cleaning fluid to drip from the channel and directly or indirectly onto the surface 110 to be cleaned.

[0136] The pull-out cleaner according to this disclosure may include an automatic spraying mechanism for automatically dispensing cleaning fluid directly or indirectly onto the surface 110 to be cleaned as the pull-out cleaner is moved forward and / or backward by a user, without requiring further user input other than moving the pull-out cleaner in the forward or backward direction. The automatic spraying mechanism may include at least one detector responsive to movement applied by the user and a control mechanism for controlling the dispensing of cleaning fluid in response to movement detected by the detector.

[0137] Figure 24This is a front perspective view of a pull-out cleaner 100a, with a portion of the frame 201 of the base 104a removed. The exemplary pull-out cleaner shown includes a detector 2402 and a control mechanism in the form of a switch 2406. The detector 2402 includes a floor contact member 2404 extending downward therefrom toward the surface 110 to be cleaned. In the exemplary embodiment shown, the floor contact member 2404 is in the form of a plurality of bristles, and the switch 2406 is in the form of a microswitch. However, it should be understood that various configurations of the floor contact member 2404 and the switch 2406 are possible in the pull-out cleaner according to this disclosure. For example, the floor contact member 2404 may be configured as a resilient flap, a rigid member with a flexible member at its end, etc. The switch may be any type of switch configuration configured to respond to the position of the detector 2402, such as a Hall effect switch, an optical switch, etc.

[0138] Figure 25 A perspective view of the detector is shown. As shown, detector 2402 includes detector body 2502, wherein floor contact member 2404 extends downward from detector body 2502 and forms a non-zero angle with respect to the vertical axis 2504 of detector body 2502. In some embodiments, this angle may be between approximately 20 degrees and 40 degrees.

[0139] The first side 2503 of the detector body 2502 includes a container 2506 for receiving a pivot pin 2508 extending into a frame 201 of the base 104a. In response to movement of the base 104a, the detector body 2502 pivots relative to the frame 201 about the pivot pin 2508. The second side 2510 of the detector body 2502 has an extension 2512. The extension 2512 extends outward from the second side 2510 of the detector body 2502 and has a hammer 2514 disposed at its distal end.

[0140] like Figure 24 and Figure 26 As shown in the cross-sectional view, hammer 2514 is arranged adjacent to switch arm 2408 of switch 2406. Rotation of detector body 2502 about pivot pin 2508 causes hammer 2514 to contact switch arm 2408 to place switch 2406 in an open or closed state. In the exemplary embodiment shown, when base 104a is moved forward by the user, i.e., in Figure 24 In the direction of arrow 2410, the floor contact member 2404 contacts the surface 110 to be cleaned, causing the detector body 2502 to pivot about the pivot pin 2508. Figure 24 and Figure 26The position shown. In this position, hammer 2514 can retract relative to switch arm 2408, thereby placing switch 2406 in an open or closed state. In response to the state of switch 2406, controller 145 of pull-out cleaner 100a can, for example, cause cleaning fluid to flow through supply line 112 via actuation pump 125 and to nozzle 114a for distribution to the surface 110 to be cleaned.

[0141] When the base 104a moves backward by the user, that is, when Figure 24 In the direction of arrow 2412, the floor contact member 2404 contacts the surface 110 to be cleaned, causing the detector body 2502 to pivot about the pivot pin 2508 and move the hammer 2514 toward the switch arm 2408 and the switch 2406. In this position, the hammer 2514 may be forced against the switch arm 2408, thereby placing the switch 2406 in an open or closed state. In response to the state of the switch 2406, the controller 145 of the extractor cleaner may reduce or interrupt the flow of cleaning fluid through the supply line 112 to the nozzle 114a.

[0142] In some embodiments, when the extractor cleaner 100a moves in the forward direction, the controller 145 may dispense cleaning fluid at a high first flow rate in response to the state of the switch, and when the extractor cleaner 100a moves in the rearward direction, the controller 145 may dispense cleaning fluid at a lower, non-zero second flow rate in response to the state of the switch. For example, high flow rate dispensing can provide, as described herein, the... Figure 16 and Figure 17 The fan-shaped spray pattern described above. Low flow rate dispensing can also provide a fan-shaped spray pattern, wherein the fan-shaped pattern associated with nozzle 114a does not extend across the entire width W1 of suction inlet 131a and / or does not overlap. Providing fluid dispensing during both forward and backward movement of base 104a can provide effective cleaning compared to providing dispensing only during one of forward and backward movement.

[0143] The detector and control mechanism in the automatic spraying configuration according to this disclosure can be provided in various configurations. For example, the detector may be a Hall effect or optical sensor configured to sense movement of a component of the pull-out cleaner 100a associated with forward and / or backward movement. In another embodiment, the detector may include a ratchet disposed on a wheel 139a of the pull-out cleaner for moving the component to enable or disable the control mechanism.

[0144] In another implementation, for example, Figure 27As shown, the upright body 102a of the pull-out cleaner can be connected to the base 104a of the pull-out cleaner via a pivot joint 2702, which allows pivoting movement of the upright body 102a relative to the base 104a and linear movement of the upright body 102a relative to the base 104a, as indicated by arrow 2704. For example, the pivot joint 2702 can be arranged in a slot 2706 defined in the base 104a. A switch 2708 having a switch arm 2710 can be positioned adjacent to the front end of the slot 2706. When the user pulls the base 104a backward using the handle 137a on the upright body 102a, the pivot joint 2702 can move backward in the slot 2706 to retract the pivot joint 2702 from the switch arm 2710 and place the switch 2708 in an open or closed state. In response to the state of switch 2708, the controller 145 of the pull-out cleaner can reduce or interrupt the flow of cleaning fluid through supply line 112 to nozzle 114a. When the user pushes the base 104a forward using handle 137a on the upright body 102a, pivot 2702 can move forward in slot 2706, and a portion of pivot 2702 can contact switch arm 2710 to place switch 2708 in an open or closed state. In response to the state of switch 2708, controller 145 can, for example, energize pump 125 to allow cleaning fluid to flow through supply line 112 and to nozzle 114a for distribution to the surface 110 to be cleaned.

[0145] In some embodiments, the control mechanism may be a mechanical valve. For example, the detector may include a portion that contacts or retracts from a portion of the mechanical valve to induce fluid delivery to nozzle 114a, or a portion that contacts or retracts from a portion of the mechanical valve to reduce or interrupt fluid delivery to nozzle 114a. In other embodiments, the mechanical valve may be configured as a one-way pressure relief valve in a recirculation loop. The detector may include a portion that contacts or retracts from a portion of the pressure relief valve to control fluid delivery based on forward and / or backward movement of base 104a.

[0146] The supply tank 106a and auxiliary tank 107a in the pull-out cleaner according to this disclosure can be provided in various configurations. In some embodiments, the supply tank 106a and auxiliary tank 107a are configured to be removably coupled to the upright body 102a, and the auxiliary tank 107a is configured to be removable from the supply tank 106a. For example, a user can remove one or more of the supply tank 106a and / or the auxiliary tank 107a to replenish the first cleaning fluid stored in the supply tank 106a and / or the second cleaning fluid stored in the auxiliary tank 107a.

[0147] refer to Figure 2 and Figure 28An upright body 102a may define a cleaning fluid support 206 configured to support the bottom 208 of the supply box 106a and the auxiliary box 107a. The supply box 106a may define an auxiliary box container 2802 for removably receiving at least a portion of the auxiliary box 107a. The auxiliary box container 2802 may extend from the top surface 2804 of the supply box 106a toward the bottom 208 of the supply box 106a and may extend between a first track 2806 and a second track 2808 defined by the supply box 106a. In some embodiments, the bottom 2810 of the auxiliary box 107a may be inserted into the top of the auxiliary box container 2802 at the top surface 2804 of the supply box 106a, wherein opposite sides 2812, 2814 of the auxiliary box 107a slidably engage the associated tracks 2806, 2808. The auxiliary box 107a can be lowered within the auxiliary box container 2802 to rest on the support 206 and / or the supply box 106a. In other embodiments, the auxiliary box 107a can be pushed into the auxiliary box container 2806 from the side of the supply box 106a to slidably engage the tracks 2806, 2808.

[0148] When the supply box 106a and the auxiliary box 107a are connected to the upright body 102a, the auxiliary box 107a is at least partially received within the auxiliary box container 2802, and the supply box 106a helps to support the auxiliary box 107a in an upright position. This configuration can generally be described as a nested configuration. When the auxiliary box 107a is arranged in the auxiliary box container 2802, the auxiliary box container 2802 can extend around at least a portion of the auxiliary box 107a.

[0149] In some embodiments, the second cleaning fluid in the auxiliary tank 107a and / or the first cleaning fluid in the supply tank 106a may be sensitive to sunlight. Therefore, the auxiliary tank 107a and / or the supply tank 106a may be made of a transparent material configured to at least partially filter out wavelengths of light that may degrade the second or first cleaning fluid.

[0150] The recycling bins 108, 108a and the supporting members for the recycling bins 108, 108a according to this disclosure can be provided in various configurations. For example, Figure 29 This is a partial rear sectional view of the pull-out cleaner 100a, showing the recycling bin 108a removably supported on the support 2902. Figure 30 This is a top perspective view of a part of the pull-out cleaner 100a, showing the support member 2902. Figure 31This is a bottom perspective view of the main body of the recycling bin 108a. As shown, the bottom surface 3102 of the recycling bin 108a can define a support cavity 3104 for receiving the support member 2902. The support member 2902 can be received in the support cavity 3104 of the recycling bin 108a. The recycling bin 108a can be placed on and removably supported by the support member 2902, wherein the outer periphery 2904 of the recycling bin 108a hangs over the support member 2902, as shown. Figure 29 As specifically shown in the diagram, the outlet port 514 of the suction switching valve 127a can extend upward into the support member 2902, and a seal 2906 can be disposed on the outlet port 514. The recovery conduit 120a can be formed as part of the recovery tank 108a, and the inlet 3106 of the recovery conduit 120a can be seated on the seal 2906 to provide fluid communication between the outlet port 514 of the suction switching valve 127a and the recovery conduit 120a.

[0151] The recycling bin 108a may include a protrusion 3108 extending downward from its bottom surface 3102. The protrusion 3108 may be positioned within the support cavity 3104 and toward the front of the support cavity 3104. The support 2902 may include a retaining wall 2906 defined in its top surface 2908 and toward the front of the support 2902. Figure 32 As shown, when the recycling bin 108a is mounted on the support 2902a, the front surface of the protrusion 3108 on the recycling bin 108a engages with the retaining wall 2906 to removably retain the recycling bin 108a on the support 2902a.

[0152] Figure 33 This is a cross-sectional view of the recycling bin 108a. As shown, the recycling bin 108a includes a bin body 3302 and a cover 3304 located above the top opening end 3306 of the bin body 3302. The cover includes a top 3308, an airflow management structure 3310 connected to the top 3308, and a float 3312 connected to the airflow management structure 3310.

[0153] In the exemplary embodiment shown, when the cleaner 100a operates to provide suction at the suction inlet 131a or the cleaning tool suction inlet 135a, the suction motor 118a can generate a suction airflow through the recovery conduit 120a and the recovery tank 108a, as indicated by arrow 3314, to actuate fluid and / or debris (referred to herein as "recovery fluid") into the tank body 3302. At least a portion of the float 3312 is buoyant and floats on the recovery fluid in the tank body 3302. As the recovery fluid rises in the tank body 3302, the float 3312 is propelled upwards to reach... Figure 33The position shown closes the suction airflow path 114 through the recovery bin 108a. The controller 145 can be configured to shut off the suction motor 118a when the suction airflow path is closed (e.g., in response to a sensor output indicating that the airflow path is closed). With this configuration, the recovered fluid can be drawn from the surface 110 to be cleaned or the target surface and stored in the bin body 3302 of the recovery bin 108a. When the recovery bin 108a is full, the suction motor 118a shuts off. The user can then remove the recovery bin 108a from the support 2902 to empty it.

[0154] Also refer to Figure 34 A cross-sectional view shows that the airflow management structure 3310 includes an airflow management body 3316, a screen 3318, a shroud 3320, and a foam filter 3322. The airflow management body 3316 includes an outer wall 3324 defining a semi-circular cavity 3326 for receiving the top 3328 of the recovery conduit 120a, and a first flange 3402 and a second flange 3406 extending outward toward the respective sides of the housing body 3302. The shroud 3320 defines a cavity for receiving the foam filter 3322 and has an opening at its bottom defining an inlet 3330 of the foam filter 3322. The bottom portion 3332 of the shroud 3320 is angled inward toward the inlet 3330 of the foam filter 3332. Advantageously, the outer wall 3324 causes airflow from the recovery conduit 120a to pass downward through the bottom end of the outer wall 3324, as indicated by arrow 3314. Airflow bypasses flanges 3402 and 3406 and enters the inlet 3330 of the foam filter 3332. When the airflow is not blocked by float 3312, it passes through screen 3318 and then flows out through fluid coupling to outlet 3334 of suction motor 118a. Suction air can then bypass suction motor 118a and pass through vents in the side of the upright body 102a of the extraction cleaner 100a. Advantageously, flanges 3402 and 3406 restrict the high-speed airflow from carrying water droplets into the inlet 3330 of foam filter 3323. Furthermore, the shroud 3320 surrounding foam filter 3323 restricts water droplets in the suction airflow and water droplets on the walls of the housing body 3302 from entering the inlet 3330 of foam filter 3323.

[0155] Figure 35 This is a perspective view of float 3312. As shown, float 3312 includes a buoyancy member 3502, an arm 3504, and a valve member 3506. The buoyancy member 3502 may be a hollow structure connected to one side of the arm 3504. The buoyancy member 3502 is hollow and has a flat side surface 3508, a portion of which faces the recovery conduit 120a only on one side. The arm 3504 extends upward from the buoyancy member 3502, and the valve member 3506 is disposed at the top of the arm 3504.

[0156] Float 3312 is supported by airflow management unit 3316. See also... Figure 33 Lugs 3510 extend outward from each side 3512 of the arm 3504 and are positioned to sit astride corresponding slots 3336 defined in the airflow management body 3316, such that the slots 3336 define the upper and lower limits of the stroke of the float 3312 when the buoyancy member 3502 floats on the recovered fluid in the tank body 3302. In some embodiments, the float 3312 can be assembled into the airflow management body 3316 by folding the sides 3512 inward to position the lugs 3510 near the slots 3336 and then releasing the sides 3512 to allow the lugs 3510 to enter the slots 3336.

[0157] As the recovered fluid rises in the tank, the valve component is pushed upwards until the protruding portion of the valve component 3506 blocks the inlet of the screen 3318, as... Figure 36 As shown. In this position, the suction airflow is blocked from leaving the collection bin 108a through outlet 3334. The suction motor 118a can then be turned off by controller 145, and the collection bin 108a can be removed from the extraction cleaner 100a for emptying.

[0158] As previously described, the suction airflow generated by the suction motor 118a can be selectively fluidly coupled to the base 104a to establish a suction airflow at the suction inlet 131a, or fluidly coupled to the flexible hose 103a to establish a suction airflow at the cleaning tool suction inlet 135a depending on the state of the suction switching valve 127a. The suction switching valve 127a according to this disclosure can be provided in various configurations.

[0159] Figure 37 This is a perspective view of the suction switching valve 127a. The example embodiment shown is constructed as a rotary valve having a housing 3702 and a rotor 3704. Also refer to... Figure 38 The housing 3702 defines a base inlet port 512, a cleaning tool inlet port 516, an outlet port 514, and a generally circular rotor cavity 3802. The rotor cavity 3802 is configured to receive at least a portion of the rotor 3704. The rear wall 3804 of the rotor cavity 3802 has an opening 3806 therein that is substantially coaxial with the rotor cavity 3802.

[0160] like Figure 39As shown, rotor 3704 includes rotor body 3902 and rotor arm 3904. Rotor body 3902 includes a first end 3906, a second end 3908, and a plug 3910 extending between the first end 3906 and the second end 3908. The first end 3906 is generally cylindrical and configured to be rotatably received in rotor cavity 3802. A first side of plug 3910 is coupled to and extends along a portion of the periphery of the inner surface 3912 of the first end 3906. The second end 3908 has an outer periphery shaped as an arc having a diameter substantially the same as that of the cylindrical first end 3906. The outer surface of the second end 3908 has a cylindrical boss 3914 extending axially from the second end 3908 and configured to be received in an opening 3806 in the rear wall 3804 of rotor cavity 3802. The second side of the plug 3910 is connected to the outer periphery of the inner surface 3916 of the second end 3908 and extends along the outer periphery.

[0161] The rotor arm 3904 includes a rotor arm body 3918 and a handle 3920. The rotor arm body 3918 is generally cylindrical, and the handle 3920 extends radially outward from the rotor arm body 3918. The rotor arm body 3918 is connected to a first end 3906 of the rotor body 3902.

[0162] At least a portion of the rotor body 3902 may be received in the rotor cavity 3802, wherein a boss 3914 on the second end 3908 of the rotor body 3902 is disposed in an opening 3806 in the rear wall 3804 of the rotor cavity 3802. In some embodiments, the rotor 3704 may include a protrusion 3922 on the outer surface of the first end 3906 of the rotor body 3902 or the rotor arm body 3918, which may be received in a corresponding groove 3808 defined in the housing 3702 for assembling the rotor 3704 into the housing 3702.

[0163] For example, the second end 3908 of the rotor body 3902 can be inserted into the rotor cavity 3802, wherein the boss 3914 is aligned to extend into the opening 3806 in the rear wall 3804 of the rotor cavity 3802. The rotor 3704 can be positioned to align the protrusion 3922 with the slot 3808 in the housing 3704, and the rotor body 3902 can be pushed inward into the rotor cavity 3802 such that the boss 3914 is arranged in the opening 3806. The rotor 3704 can then be rotated such that the protrusion 3922 and the slot 3808 are no longer aligned, and the rotor body 3902 is at least partially and rotatably secured in the rotor cavity 3802.

[0164] When the rotor body 3902 is rotatably arranged in the rotor cavity 3802, the user can manually move the suction switching valve 127a between the base suction state and the cleaning tool suction state by manipulating the handle 3920 of the rotor arm 3904. For example, to place the suction switching valve 127a in the base suction state, the user can move the handle 3920 to... Figure 2 and Figure 32 The upward orientation shown causes the body 3902 and plug 3910 to rotate within the rotor cavity 3802. In this upward orientation of the handle 3920, the plug 3910 prevents fluid communication between the cleaning tool inlet port 516 and outlet port 514 of the housing 3702. With the plug 3910 in this position, the base inlet port 512 is fluidly connected to the outlet port 514, and the recovery conduit 120a is fluidly connected to the base airflow path 119a. Figure 5 Therefore, the suction motor 118a can actuate the fluid recovered from the surface to be cleaned 110 through the base airflow path 119a and into the recovery tank 108a.

[0165] To position the suction control valve 127a in the cleaning tool suction state, the user can move the handle 3920 to... Figure 40 and Figure 41 The downward orientation shown causes the rotor body 3902 and plug 3910 to rotate within the rotor cavity 3902. In this downward orientation of the handle 3920, plug 3910 prevents fluid communication between the base inlet port 512 and outlet port 514 of the housing 3702. With plug 3910 in this position, the cleaning tool inlet port 516 is fluidly connected to the outlet port 514, and the recovery conduit 120a is fluidly connected to the cleaning tool airflow path 129a. Therefore, the suction motor 118a can actuate the recovery fluid placed on the target surface through the cleaning tool airflow path 129a and into the recovery tank 108a.

[0166] The suction switching valve 127a according to this disclosure can be provided in various manual, automatic, or semi-automatic configurations. In some embodiments, the suction switching valve 127a can be placed in a selected state using an electrically driven component such as a solenoid. The electrically driven component can be controlled by user input, for example via mechanical or graphical user interface (GUI) buttons on control panel 141, to select the desired state of suction switching valve 127a, and / or by output from controller 145 to set the state of suction switching valve 127a in response to the output of one or more sensors. In some embodiments, for example, the base suction state and / or cleaning tool suction state can be selected by the user by manual operation when the cleaner is in an upright position or by energizing the electrically controlled valve, such as... Figure 1 and Figure 2As shown. In some embodiments, when the cleaner is in an upright position, a mechanical or electrical switch can automatically move the suction switching valve 127a to the cleaning tool suction state, and when the cleaner is moved to an inclined position for floor cleaning, the mechanical or electrical switch can automatically move the suction switching valve 127a to the base suction state. In some embodiments, when the cleaning tool 105a is removed from the storage position, for example as... Figure 2 As shown, removing the cleaning tool 105a can change the state of a mechanical or electrical switch, moving the suction switching valve 127a to the cleaning tool suction state. Changing the storage location of the cleaning tool 105a can again change the switch state, moving the suction switching valve 127a to the base suction state. In some embodiments, installing or removing the recycling bin 108a, supply bin 106a, and / or auxiliary bin 107a from the cleaner 100a can change the state of a mechanical or electrical switch, placing the suction switching valve 127a in either the cleaning tool suction state or the base suction state.

[0167] In some embodiments, the suction switching valve 127a according to this disclosure may have a removed position. When the suction switching valve 127a is in the removed position, the rotor 3704 can be removed from the housing 3702 to clean or retain the suction switching valve 127a. For example, in the illustrated embodiment, the suction switching valve 127a can be placed in the removed position by moving the handle 3920 forward relative to the upright orientation, thereby aligning the protrusion 3922 with the slot 3808. When the protrusion 3922 is aligned with the slot 3808, the rotor 3704 can be manually withdrawn from the rotor cavity 3802 by axially pushing the rotor 3704 and sliding the protrusion 3922 outward from the slot 3808. This allows access to the rotor 3704 and the rotor cavity 3802 for cleaning. For example, when the handle 3920 is in the removed position relative to the upright orientation, the rotor 3704 can be removed from the housing 3702 to clean or retain the valve 127a. Figure 2 and Figure 32 When the upright orientation shown is moved forward by about 30 degrees, the suction switching valve 127a can be placed in the removal position.

[0168] According to this disclosure, various other configurations of the suction switching valve will be apparent. In some embodiments, for example, the suction switching valve 127a may include a removable sealing portion to allow cleaning or maintenance of the suction switching valve 127a. For example, Figure 37The seal 2906 shown may be removably or pivotally coupled to the housing 3702 to allow access to the interior of the housing 3702. In some embodiments, the flexible hose 103a coupled to the cleaning tool inlet port 512 of the suction switching valve 127a may be removable to allow access to the interior of the housing 3702 for cleaning or maintenance. Additionally or alternatively, the rotor 3704 of the suction switching valve 127a may include one or more features extending therefrom, such as wipers, teeth, etc., which remove debris from the interior of the suction switching valve 127a when the rotor 3704 rotates in the rotor cavity 3802 and / or when the rotor 3704 is removed from the housing 3702. The interior of the suction switching valve 127a may also include one or more internal suction paths through the suction switching valve 127a for removing debris. The rotor 3704 may also be positioned in the rotor cavity 3802 to provide a gap between the rotor 3704 and the portion of the housing 3702 that defines the rotor cavity 3802, so as to avoid trapping debris in the rotor cavity 3802.

[0169] In some embodiments, movement of the suction switching valve 127a to the base suction state automatically places the fluid switching valve 123 in the base supply state to provide fluid delivery to the nozzle 114a on the base 104a, and movement of the suction switching valve 127a to the cleaning tool suction state places the fluid switching valve 123 in the cleaning tool supply state to provide fluid delivery to the fluid dispensing nozzle 115 on the cleaning tool 105a. For example, an electrical switch (e.g., a microswitch, a Hall effect switch, an optical switch, etc.) may be positioned adjacent to the suction switching valve 127a and configured to control the electrically actuated fluid switching valve 123 directly or via the controller 145 in response to the position of the suction switching valve 127a. In other embodiments, the suction switching valve 127a may be mechanically coupled to the fluid switching valve 123 such that movement of the suction switching valve 127a to the base suction state also moves the fluid switching valve 123 to the base supply state, and movement of the suction switching valve to the cleaning tool suction state also moves the fluid switching valve 123a to the cleaning tool supply state.

[0170] For example, Figure 42 The mechanical connection between suction switching valve 127a and fluid switching valve 123a is shown. The exemplary embodiment shown includes a connecting rod 4202 connecting the suction switching valve 127a and the fluid switching valve 123a. See also... Figure 39 , Figure 43 and Figure 44The rotor 3704 of the suction switching valve 127a includes a cam 4302 that extends axially outward from the outer surface of the boss 3914 and adjacent to the periphery of the boss 3914. The cam 4302 extends into an opening 4304 in a cam follower 4306 configured for linear movement relative to the suction switching valve 127a between an upward and a downward position. When the handle 3920 of the suction switching valve 127a is moved to the upright orientation and the suction switching valve 127a is moved to the base suction state, the cam 4302 engages the cam follower 4306 to actuate the cam follower 4306 to the upward position. When the handle 3920 is moved to the downward orientation and the suction switching valve 127a is moved to the cleaning tool suction state, the cam 4302 engages the cam follower 4306 and actuates the cam follower 4306 to the downward position.

[0171] The distal end of the cam follower 4306 is coupled to one end of the connecting rod 4202. The connecting rod 4202 is arranged in the upright body 102a for linear movement corresponding to the linear movement of the cam follower 4306. In some embodiments, the connecting rod 4202 and the cam follower 4306 can be forceped toward an upward or downward position by a spring 4204 arranged between the connecting rod 4202 and the upright body 102a.

[0172] Also refer to Figure 44 The opposite ends of the connecting rod 4202 include valve engagement surfaces 4402 and 4404, which are positioned adjacent to the associated engagement surfaces 4406 and 4408 of the corresponding valve members 4410 and 4412 of the fluid switching valve 123a. The valve engagement surfaces 4402 and 4404 are configured to contact the engagement surfaces 4406 and 4408 of the valve members 4410 and 4412 to push the valve members 4410 and 4412 into a configuration that places the fluid switching valve 123a in a state corresponding to the state of the suction switching valve 127a. That is, when the suction switching valve 127a moves to the base suction state, the engagement surfaces 4402 and 4404 place the valve members 4410 and 4412 in a position that places the fluid switching valve 123a in a base supply state to supply clean fluid to the base. When the suction switching valve 127a is moved to the cleaning tool suction state, the mating surfaces 4402 and 4404 place the valve members 4410 and 4412 in the position that the fluid switching valve 123a is placed in the cleaning tool supply state to supply cleaning fluid to the cleaning tool 105a.

[0173] The connecting rod 4202 and the fluid switching valve 123a according to this disclosure can be provided in various configurations. For example, the fluid switching valve 123a may include only a single valve member, and the connecting rod 4202 may include only a single valve engagement surface for actuating the valve member into a position corresponding to the state of the suction switching valve 127a. Any number of valve engagement surfaces and valve members can be provided in the fluid switching valve 123a, and the fluid switching valve 123a can be configured to provide various combinations of fluid passages depending on the position of the valve member.

[0174] Using an electrically driven component, such as a solenoid, controlled by user input, such as mechanical or graphical user interface (GUI) buttons on control panel 141, fluid switching valve 123a can also, or alternatively, be placed in a selection state for selecting a desired position of the fluid switching valve, and / or the position of fluid switching valve 123a can be set in response to the output of one or more sensors via an output from controller 145. Furthermore, in the system according to this disclosure, any number of fluid switching valves can be fluidly coupled, for example, via one or more control valves, for selectively coupling a first cleaning fluid and / or a second cleaning fluid to base 104a and / or cleaning tool 105a. In some embodiments, for example, the fluid switching valves and control valves can be controlled by user input to allow the user to selectively supply a desired combination of fluids to base 104a and / or cleaning tool 105a, such as only the booster fluid, only the base cleaning fluid, and / or a desired mixture of booster fluid and base cleaning fluid. Figure 45 and Figure 46 schematically shown Figure 42 and Figure 44 The illustrated exemplary fluid switching valve 123a is shown in operation. The fluid switching valve 123a includes a first valve member 4410 disposed in a first chamber 4502 of a housing 4504 and a second valve member 4412 disposed in a second chamber 4506 of the housing 4504. The first valve member 4410 and the second valve member 4412 can be operated in the first chamber 4502 and the second chamber 4506. Figure 45 The extended position shown and Figure 46 The movement is linear between the retracted positions shown. Each of the valve members 4410, 4412 can be forced toward the extended position by an associated spring 4508, 4510 arranged between the valve member 4410, 4412 and the housing 4504.

[0175] The housing 4504 defines a pump output port 4516, which is selectively fluidly connected to the second chamber 4506 according to the position of the second valve member 4412, and a first fluid input port 4512 and a second fluid input port 4514. The housing 4504 also defines a pump input port 4518, a base output port 4520, and a cleaning tool output port 4522, which are selectively fluidly connected to the first chamber 4502 according to the position of the first valve member 4410.

[0176] Pump output port 4516 can be connected to the input of pump 125a, and pump input port 4518 can be connected to the output of pump 125a. The first fluid input port 4512 can be connected via supply line 112 ( Figure 1 Connected to mixing valve 111 ( Figure 1 The output section of the second input port 4514 can be supplied through the supply line 112 ( Figure 1 The base output port 4520 is fluidly connected to the base supply line 117a to supply cleaning fluid to one or more fluid dispensing nozzles 114a connected to the base 104a. The cleaning tool output port 4522 is fluidly connected to the cleaning tool supply line 121. Figure 1 ( ), to supply cleaning fluid to one or more fluid dispensing nozzles 115 connected to the cleaning tool 105a.

[0177] like Figure 45 As shown, when the first valve member 4410 and the second valve member 4412 are in the extended position, the first fluid inlet port 4512 can be fluidly connected to the pump outlet port 4516 through the second chamber 4506, and the fluid communication between the second fluid inlet port 4514 and the pump outlet port 4516 can be blocked by the second valve member 4412. Furthermore, the pump inlet port 4518 can be fluidly connected to the base outlet port 4520 through the first chamber 4502, and the fluid communication between the cleaning tool outlet port 4522 and the pump inlet port 4518 can be blocked by the first valve member 4410. In this configuration, the cleaning fluid supplied from the mixing valve 111 to the first fluid inlet port 4512 can be pumped by the pump 125a to the pump inlet port 4518 and flow out to the base supply line 117a connected to the base outlet port 4520.

[0178] like Figure 46As shown, when the first valve member 4410 and the second valve member 4412 are in the retracted position, the second fluid inlet port 4514 can be fluidly connected to the pump outlet port 4516 through the second chamber 4506, and the fluid communication between the first fluid inlet port 4512 and the pump outlet port 4516 can be blocked by the second valve member 4412. Furthermore, the pump inlet port 4518 can be fluidly connected to the cleaning tool outlet port 4522 through the first chamber 4502, and the fluid communication between the base outlet port 4520 and the pump inlet port 4518 can be blocked by the first valve member 4410. In this configuration, the cleaning fluid supplied from the mixing valve 111 to the second inlet port 4514 can be pumped by the pump 125a to the pump inlet port 4518 and flows out to the cleaning tool supply line 121 connected to the cleaning tool outlet port 4522.

[0179] Therefore, depending on the selected positions of valve components 4410, 4412, a single pump 125a can be used to pump cleaning fluid from different inlet ports 4512, 4514 to the base 104a or cleaning tool 105a. In some embodiments, for example, the output of mixing valve 111 to the first inlet port 4512 may include only the first cleaning fluid from supply tank 106a, only the second cleaning fluid from auxiliary tank 107a, or a mixture of the first and second cleaning fluids. The output of mixing valve 111 to the second inlet port 4514 may include only the first cleaning fluid from supply tank 106a, only the second cleaning fluid from auxiliary tank 107a, or a mixture of the first and second cleaning fluids. Therefore, in the illustrated configuration, different cleaning fluids or combinations of cleaning fluids can be supplied from mixing valve 111 to the first inlet port 4512 and the second inlet port 4514 to provide different cleaning fluids to the base 104a or cleaning tool 105a, respectively. In some implementations, for example, only the first cleaning fluid from the supply tank 106a may be supplied to the first input port 4512 to supply only the first cleaning fluid to the base 104a, and a mixture of the first cleaning fluid from the supply tank 106a and the second cleaning fluid from the auxiliary tank 107a may be supplied to the second input port 4514 to supply the mixture of the first and second cleaning fluids to the cleaning tool 105a.

[0180] The mixing valve 111a is available in a variety of configurations. Figure 47An example of a mixing valve 111a useful in an embodiment according to this disclosure is shown. The mixing valve 111a includes a first mixing valve inlet 4702, a second mixing valve inlet 4704, a first mixing valve outlet 4706, and a second mixing valve outlet 4708. The mixing valve 111a is configured to receive a first cleaning fluid at the first mixing valve inlet 4702 and a second fluid at the second mixing valve inlet 4704, and to provide a mixture of the first and second cleaning fluids at the first mixing valve outlet 4706, and only the first cleaning fluid at the second mixing valve outlet 4708.

[0181] For example, in some embodiments, a first mixing valve inlet 4702 is fluidly connected to a supply tank 106a, a second mixing valve inlet 4704 is fluidly connected to an auxiliary tank 107a, a first mixing valve outlet 4706 is connected to a second input port 4514 of a fluid switching valve 123a, and a second mixing valve outlet 4708 is connected to a first inlet port 4512 of the fluid switching valve 123a. When cleaning fluid is supplied from both the supply tank 106a and the auxiliary tank 107a, the cleaning fluid from the supply tank 106a is provided at the second mixing valve outlet 4708 and fluidly connected to the first inlet port 4512 of the fluid switching valve 123a, and a mixture of the cleaning fluid from the supply tank 106a and the cleaning fluid from the auxiliary tank 107a is provided at the first mixing valve outlet 4706 and fluidly connected to the second inlet port 4514 of the fluid switching valve 123a. With this configuration, the fluid switching valve 123a supplies a first cleaning fluid from the supply tank 106a to the base 104a when in the base supply state, and supplies a mixture of the first cleaning fluid from the supply tank 106a and the second cleaning fluid from the auxiliary tank 107a to the cleaning tool 105a when in the cleaning tool supply state, and pumps the fluid to the base 104a and the cleaning tool 105a using a single pump 125a.

[0182] Figure 48 A cross-sectional view of mixing valve 111a is shown. As shown, mixing valve 111a includes components corresponding to the first mixing valve inlet 4702. Figure 14 And fluidly connected to a first cavity 4800 of the second mixing valve outlet 4708, a second cavity 4802 corresponding to the second mixing valve inlet 4704, and a mixing cavity 4804 fluidly connected to the first cavity 4800 and the second cavity 4802 and fluidly connected to the first mixing valve outlet 4706. See also Figure 49 A cross-sectional view shows that the first cavity 4800 includes one or more first cavity ports 4902 that fluidly connect the first cavity 4800 to the mixing cavity 4804, and the second cavity includes one or more second cavity ports 4904 that fluidly connect the second cavity 4802 to the mixing cavity 4804.

[0183] As shown in the figure, the mixing valve 111a includes a plurality of umbrella valves 4806, each umbrella valve 4806 corresponding to a corresponding one of the first chamber 4800 or the second chamber 4802. The umbrella valves 4806 are configured to function as one-way valves, which substantially prevent the clean fluid within the mixing chamber 4804 from flowing back into the first chamber 4800 and / or the second chamber 4802. In addition to or as an alternative to the umbrella valves 4806, one or more check valves may be fluidly connected to the first mixing valve inlet 4702 and / or the second mixing valve inlet 4704. In addition to or as an alternative to the mixing valve 111a, venturi connectors or valves, T-connectors or valves, and / or Y-connectors or valves may be used to mix the first and second clean fluids. In these embodiments, one or more check valves may be fluidly connected between the valve or connector and a corresponding one of the supply tank 106a and / or the auxiliary tank 107a.

[0184] Figure 50 An exploded perspective view of a mixing valve 111a is shown. As shown, the mixing valve 111a includes a top cover 5002, a bottom cover 5004, and an intermediate plate 5006. The top cover 5002 defines a first cavity 4800 and a second cavity 4802, and the bottom cover defines a mixing cavity 4804. The intermediate plate 5006 includes a first cavity port 4902 and a second cavity port 4904, as well as a valve mounting opening 5008 for connection to an umbrella valve 4806. As shown, the intermediate plate 5006 includes four first cavity ports 4902 and one second cavity port 4904. The diameter of the first cavity port 4902 may be, for example, two to four times the diameter of the second cavity port 4904. As a further example, the diameter of the first cavity port 4902 may be 3.125 times the diameter of the second cavity port 4904. As another example, the diameter of the first cavity port 4902 may be about 2.5 mm (e.g., within 1%, 5% or 10% of it), and the diameter of the second cavity port may be about 0.8 mm.

[0185] The number and size of the first cavity port 4902 and the second cavity port 4904 can be at least partially based on the desired mixing ratio of the first fluid and the second fluid. For example, the mixing ratio of the first cleaning fluid to the second cleaning fluid can be in the range of 5:1 to 15:1. As a further example, the mixing ratio of the first cleaning fluid to the second cleaning fluid can be in the range of 9:1 to 11:1. As yet another example, the mixing ratio of the first cleaning fluid to the second cleaning fluid can be 10:1.

[0186] The extractable cleaner according to this disclosure can be provided in various configurations to allow a user to selectively control the supply (and / or the ratio of the first and second cleaning fluids) to the base 104a and / or cleaning tool 105a. For example, the second cleaning fluid from the auxiliary tank 107a (e.g., alone or mixed with the first cleaning fluid from the supply tank 106a) can be supplied only to the cleaning tool 105a and not to the base 104a. This allows the user to clean the target area with or without the booster fluid, while avoiding waste of the second cleaning fluid and / or potential damage to the surface 110 to be cleaned and surrounding surfaces or objects that may be caused by the dispensing of the second cleaning fluid from the base 104a.

[0187] In some implementations, for example, Figure 51 As shown, control valve 5102 may be fluidly connected to auxiliary tank 107a, for example, at the output of auxiliary tank 107a, to allow the user to selectively deliver a second cleaning fluid from auxiliary tank 107a (e.g., alone or mixed with the first cleaning fluid from supply tank 106a). For example, the user may manipulate inputs, such as mechanical or graphical user interface (GUI) buttons on control panel 141, to directly or via controller 145 control control valve 5102 to control the delivery of the second cleaning fluid from auxiliary tank 107a to base 104a and / or cleaning tool 105a via mixing valve 111a and / or one or more supply lines 112. In some embodiments, controller 145 may be implemented as a timer to automatically control control valve 5102 to stop the delivery of the second cleaning fluid from auxiliary tank 107a after a predetermined time (e.g., 20 seconds). This can prevent accidental use of the second cleaning fluid after the user has already begun using it via inputs on control panel 141.

[0188] In some embodiments, control valve 5103 may be fluidly connected to supply tank 106a, for example, at the output of auxiliary tank 106a, to allow a user to selectively deliver first cleaning fluid from supply tank 106a, either alone or in combination with second cleaning fluid from auxiliary tank 107a. For example, a user may manipulate inputs, such as mechanical or graphical user interface (GUI) buttons on control panel 141, to control control valve 5103 directly or via controller 145 to control the delivery of first cleaning fluid from supply tank 106a to base 104a and / or cleaning tool 105a via mixing valve 111a and / or one or more supply lines 112.

[0189] In some embodiments, the delivery of a first cleaning fluid from supply tank 106a and / or a second cleaning fluid from auxiliary tank 107a may be controlled in response to one or more sensors 5109 providing one or more control outputs to controller 145. Controller 145 may control the state of control valve 5102 and / or control valve 5103 in response to control outputs from sensors 5109. For example, sensor 5109 may include a known surface-type detection sensor coupled to base 104a and / or cleaning tool 105a for providing different control outputs associated with each of a plurality of different floor types, such as hard floor, carpet, and / or different types of hard floor or carpet, above which cleaner 100a is positioned. Controller 145 may be configured to control control valve 5102, control valve 5103, and / or mixing valve 111a to deliver the first cleaning fluid, the second cleaning fluid, and / or a desired mixture of the first and second cleaning fluids to base 104a or cleaning tool 105a according to the floor type detected by the surface-type sensor. In some implementations, for example, when the surface-type detection sensor provides a first output to the controller 145 indicating that the base 104a or cleaning tool 105a is positioned on a hard floor, the controller 145 may control control valves 5102, 5103, and / or mixing valve 111a to deliver only the first cleaning fluid to the base 104a and / or cleaning tool 105a; and when the surface-type detection sensor provides a second output to the controller 145 indicating that the base 104a or cleaning tool 105a is positioned on a carpet, the controller 145 may control control valves 5102, 5103, and / or mixing valve 111a to deliver a desired mixture of the first and second cleaning fluids.

[0190] In some embodiments, sensor 5109 may include a known turbidity and / or debris sensor coupled to cleaner 100a for detecting the amount of debris in the recovery fluid pumped from base 104a and / or cleaning tool 105a into a recovery tank. Controller 145 may be configured to control control valve 5102, control valve 5103, and / or mixing valve 111a to deliver a first cleaning fluid, a second cleaning fluid, and / or a desired mixture of the first and second cleaning fluids to base 104a or cleaning tool 105a based on the amount of debris in the recovery fluid detected by the turbidity and / or debris sensor. In some embodiments, for example, controller 145 may control control valves 5102, 5103, and / or mixing valve 111a to deliver only the first cleaning fluid to base 104a and / or cleaning tool 105a when the turbidity and / or debris sensor provides a first output to controller 145 indicating that the amount of debris in the recovered fluid is at a relatively low level, and to deliver a desired mixture of the first and second cleaning fluids when the turbidity and / or debris sensor provides a second output to controller indicating that the amount of debris in the recovered fluid is at a relatively high level. With this configuration, fluid (e.g., enhancement fluid) from auxiliary tank 107a can be automatically delivered to base 104a and / or cleaning tool 105a when base 104a and / or cleaning tool 105a are cleaning particularly dirty areas, and then the delivery of enhancement fluid can be automatically stopped when base 104a and / or cleaning tool 105a are not cleaning particularly dirty areas.

[0191] Various other configurations can be provided in the extractable cleaner for controlling the supply of the first and / or second cleaning fluid to the base 104a and / or cleaning tool 105a. For example, any number of mixing valves can be provided in combination with associated control valves to allow the user to selectively supply a desired combination of fluids to the base 104a and / or cleaning tool 105a, such as only the first cleaning fluid, only the second cleaning fluid, and / or a desired mixture / ratio of the first and second cleaning fluids. Furthermore, in some embodiments, the mixing valve 111a can be omitted, and the desired mixture of the first and second cleaning fluids can be achieved using one or more fittings (e.g., known T-connectors).

[0192] In some embodiments where a mixture of a first cleaning fluid from supply tank 106a and a second cleaning fluid from auxiliary tank 107a is supplied to base 104a and / or cleaning tool 105a, a known flow sensor 5104 is provided at the output of supply tank 106a. Flow sensor 5104 can provide an output to controller 145 indicating that the flow of the first cleaning fluid from supply tank 106a has been interrupted. In response, controller can control control valve 5102 fluidly connected to auxiliary tank 107a, for example at the output of auxiliary tank 107a, to interrupt the flow of the second cleaning fluid from auxiliary tank 107a, and / or control mixing valve 111a fluidly connected to auxiliary tank 107a to interrupt the flow of the auxiliary fluid from the mixing valve. This prevents the second cleaning fluid from being supplied separately from auxiliary tank 107a to base 104a or cleaning tool 105a, i.e., from mixing with the first cleaning fluid from supply tank 106a. This prevents damage to the surface 110 to be cleaned or the target surface from being cleaned by applying only the second cleaning fluid from the auxiliary tank 107a.

[0193] In some embodiments, the extractable cleaner according to this disclosure may provide a visual indicator that a second cleaning fluid from the auxiliary tank 107a is supplied to the base 104a or cleaning tool 105a. For example, a known flow sensor 5106 may be located at the output of the auxiliary tank 107a, and the controller 145 may illuminate one or more lights 5108, such as LEDs, in response to the output of the flow sensor 5106 when the second cleaning fluid is delivered from the auxiliary tank 107a. In some embodiments, the second cleaning fluid from the auxiliary tank 107a and the first cleaning fluid from the supply tank 106a may include components that produce different colors when mixed. For example, the first cleaning fluid may be yellow, and the second cleaning fluid may be blue. When both the first and second cleaning fluids are delivered to the surface 110 to be cleaned or the target surface, the mixture of the first and second cleaning fluids produces a mixed cleaning fluid with a green color indicating that both fluids have been applied.

[0194] Therefore, according to one aspect of the present disclosure, a pull-out cleaner is provided, comprising: a base; an upright body pivotally connected to the base; an agitator disposed in an agitator cavity of the base and configured to agitate the surface to be cleaned; a supply tank for storing cleaning fluid; and a recovery tank configured to receive recovered fluid drawn from the surface to be cleaned by suction established at the suction inlet.

[0195] According to another aspect of this disclosure, the base may include a frame, a door coupled to the frame, a suction nozzle coupled to the base, and at least one fluid distribution nozzle. According to another aspect, the door may be non-removably coupled to the frame, and the suction nozzle may be removably coupled to the base. According to another aspect, the door may include a top surface and a bottom surface, the bottom surface of the door defining at least a portion of an agitator cavity, and at least one fluid distribution nozzle may be coupled to the door and exposed at the bottom surface of the door, said at least one fluid distribution nozzle being configured to directly or indirectly distribute cleaning fluid to the surface to be cleaned. According to another aspect, the suction nozzle may have a front wall, a rear wall, and a suction nozzle channel defined between the front and rear walls, the rear wall being positioned relative to the top surface of the door, the suction nozzle channel having a suction inlet configured to be arranged adjacent to the surface to be cleaned and a suction outlet configured to be removably coupled to the base as an internal suction conduit to at least partially define a base airflow path extending from the suction inlet and through the base.

[0196] According to another aspect of this disclosure, the door can be pivotally connected to the frame to pivot between a closed position and an open position, in which the agitator is inaccessible from the top of the base and in the open position, the agitator is accessible from the top of the base. According to another aspect, the door can be pivotally connected to the frame via a first pivot pin and a second pivot pin, the first pivot pin and the second pivot pin extending outward from opposite side surfaces of the door and extending into associated sides of the frame. According to another aspect of this disclosure, the bottom surface of the door defines at least a portion of the front wall and the top wall of the agitator cavity.

[0197] According to another aspect of this disclosure, the base may further include at least one inlet port extending through an associated opening in the door, the inlet port being fluidly connected to a base supply line below the bottom surface of the door and fluidly connected to a supply fitting above the top surface of the door, the supply fitting being fluidly connected to at least one fluid dispensing nozzle.

[0198] According to another aspect of this disclosure, the door can be pivotally connected to the frame to pivot between a closed position and an open position, wherein in the closed position the agitator is not accessible from the top of the base, and in the open position the agitator is accessible from the top of the base, and the inlet port is removably fluidly connected to the base supply line, such that when the door is moved to the closed position the inlet port is fluidly connected to the base supply line, and when the door is moved to the open position the inlet port is disconnected from the base supply line.

[0199] According to another aspect of this disclosure, the base also includes at least one cover disposed on the top surface of the door and on at least a portion of the fluid distribution nozzle, supply fitting, and inlet port.

[0200] According to another aspect of this disclosure, the door includes an opening, and a base airflow path extends from the suction inlet and through the opening.

[0201] According to another aspect of this disclosure, at least one fluid dispensing nozzle includes a first fluid dispensing nozzle and a second fluid dispensing nozzle, and the base further includes a first inlet port and a second inlet port, the first inlet port and the second inlet port being fluidly connected to a base supply line below the bottom surface of the door, the first inlet port being fluidly connected to a first supply fitting above the top surface of the door, and the second inlet port being fluidly connected to a second supply fitting above the top surface of the door, the first supply fitting and the second supply fitting being fluidly connected to the first fluid dispensing nozzle and the second fluid dispensing nozzle, respectively.

[0202] According to another aspect of this disclosure, the base further includes: a first cover disposed on the top surface of the door and disposed on at least a portion of the first fluid dispensing nozzle, the first supply fitting, and the first inlet port; and a second cover disposed on the top surface of the door and disposed on at least a portion of the second fluid dispensing nozzle, the second supply fitting, and the second inlet port.

[0203] According to another aspect of this disclosure, a portion of the suction nozzle is received in a cavity defined by the top surface of the door, the side surface of the first cover, and the side surface of the second cover.

[0204] According to another aspect of this disclosure, at least one fluid dispensing nozzle is configured to dispense cleaning fluid in a spray pattern toward the front of the agitator and distribute it to the surface to be cleaned.

[0205] According to another aspect of this disclosure, at least one fluid dispensing nozzle is positioned such that cleaning fluid dispensed from at least one fluid dispensing nozzle impacts the surface to be cleaned at a position within 1 cm of the rear wall of the suction nozzle.

[0206] According to another aspect of this disclosure, at least one fluid dispensing nozzle includes a first fluid dispensing nozzle and a second fluid dispensing nozzle, the first fluid dispensing nozzle being configured to dispense cleaning fluid toward the front of the agitator in a first spray pattern and dispense it onto the surface to be cleaned, and the second fluid dispensing nozzle being configured to dispense cleaning fluid toward the front of the agitator in a second spray pattern and dispense it onto the surface to be cleaned, wherein the first spray pattern and the second spray pattern overlap at a position between the first fluid dispensing nozzle and the second fluid dispensing nozzle.

[0207] According to another aspect of this disclosure, the suction outlet is oriented downward relative to the top surface of the suction nozzle for removable connection to an internal suction conduit.

[0208] According to another aspect of this disclosure, a connector end disposed adjacent to the upright portion of the suction nozzle is configured to be removably coupled to the base. According to another aspect of this disclosure, the connector end includes a spring-loaded connector for removable coupling to the base.

[0209] According to another aspect of this disclosure, the suction nozzle is configured to be removably coupled to a base adjacent to the front end of the suction nozzle. According to another aspect of this disclosure, the suction nozzle includes a first lead-beam feature and a second lead-beam feature, the first lead-beam feature and the second lead-beam feature being adjacent to the front end of the suction nozzle and configured to be removably coupled to a first latch and a second latch defined by a frame.

[0210] According to another aspect of this disclosure, the rear wall of the suction nozzle does not form any part of the agitator cavity.

[0211] According to another aspect of this disclosure, the base also includes an automatic spray detector that responds to movement of the base and is configured such that cleaning fluid is dispensed from at least one fluid dispensing nozzle when the base moves in a forward direction. In some embodiments, the cleaning fluid may be dispensed at a first flow rate when the base moves in the forward direction, and at a non-zero second flow rate when the base moves in a rearward direction.

[0212] According to another aspect of this disclosure, the base may include an automatic spray detector that responds to movement of the base and is configured such that cleaning fluid is dispensed from at least one fluid dispensing nozzle when the base moves in a forward direction. The automatic spray detector includes a detector body pivotally coupled to a frame, a floor contact member extending downward from the bottom of the detector body at a non-zero angle relative to the vertical axis of the detector body for contacting a surface to be cleaned, an extension extending outward from a side surface of the detector body, and a hammer disposed at a distal end of the extension. The hammer is configured to contact a switch arm of a switch to change the state of the switch when the detector body rotates, and the cleaning fluid is dispensed from at least one fluid dispensing nozzle in response to the state of the switch.

[0213] According to another aspect of this disclosure, the supply box includes a container, and the extractor further includes an auxiliary box for storing a second cleaning fluid, at least a portion of which is removably received in the container.

[0214] According to another aspect of this disclosure, the upright portion defines a support member, and the bottom of the recycling bin is removably supported on the support member, wherein the outer periphery of the recycling bin hangs over the support member. According to another aspect of this disclosure, the support member defines a retaining wall at its front, and wherein the bottom of the recycling bin has a protrusion extending therefrom for engaging the retaining wall.

[0215] According to another aspect of this disclosure, the recovery tank includes a tank body and a cover. The tank body includes a recovery conduit and is configured to retain the recovery fluid. The cover has an outlet fluidly connected to a suction motor that generates a suction airflow through the recovery tank. The cover also includes a float having a buoyancy member configured to float on the recovery fluid and a valve member configured to prevent the suction airflow when the recovery fluid reaches full level. The buoyancy member has a flat side surface arranged on only one side of the recovery conduit.

[0216] According to another aspect of this disclosure, the float further includes an arm, wherein a buoyancy member is arranged at a first end of the arm and a valve member is arranged at a second end of the arm, wherein the arm has lugs extending outward from its opposite sides, the lugs being configured to receive in corresponding slots in the airflow management body of the cover.

[0217] According to another aspect of this disclosure, the recycling bin includes a bin body and a lid, the lid having an outlet fluidly connected to a suction motor that generates a suction airflow through the recycling bin, and wherein the recycling bin further includes a foam filter disposed within a shroud and defining an inlet, and wherein the suction airflow passes through the inlet. According to another aspect of this disclosure, the bottom portion of the shroud is angled inward toward the inlet.

[0218] According to another aspect of this disclosure, the recycling bin includes a bin body and a lid. The bin body includes a recycling conduit and is configured to retain recycling fluid. The lid has an outlet fluidly connected to a suction motor that generates a suction airflow through the recycling bin. The lid includes an airflow management body that includes a flange extending outward therefrom and toward a sidewall of the bin body. The flange is configured to guide the suction airflow downward from the top of the recycling conduit toward the bottom of the bin body.

[0219] According to another aspect of this disclosure, the extractable cleaner further includes: a flexible hose; a cleaning tool coupled to the flexible hose and having a suction inlet, wherein an airflow path for the cleaning tool extends from the suction inlet and through the flexible hose; and at least one cleaning tool fluid dispensing nozzle coupled to the cleaning tool.

[0220] According to another aspect of this disclosure, the extraction cleaner further includes a suction switching valve comprising: a base inlet port fluidly connected to a base airflow path; a cleaning tool inlet port fluidly connected to a cleaning tool airflow path; and an outlet port fluidly connected to a recovery tank. The suction switching valve has a base suction state and a cleaning tool suction state. In the base suction state, the outlet port is fluidly connected to the base inlet port for receiving recovered fluid from the surface to be cleaned through the base airflow path and entering the recovery tank. In the cleaning tool suction state, the outlet port is fluidly connected to the cleaning tool inlet port for receiving recovered fluid from the target surface through the cleaning tool inlet port and entering the recovery tank.

[0221] According to another aspect of this disclosure, the suction switching valve includes: a housing defining a base inlet port, a cleaning tool inlet port, an outlet port, and a rotor cavity; and a rotor rotatably disposed within the rotor cavity and including a plug, the rotor being rotatable between a first orientation and a second orientation, wherein in the first orientation the suction switching valve is in a base suction state and the plug prevents fluid communication between the outlet port and the cleaning tool inlet port, and in the second orientation the suction switching valve is in a cleaning tool suction state and the plug prevents fluid communication between the outlet port and the base inlet port. According to another aspect of this disclosure, the rotor includes a handle extending outwardly from the rotor and configured to be operated by a user to move the rotor between the first and second orientations.

[0222] According to another aspect of this disclosure, the extraction cleaner further includes a fluid switching valve having a base supply state and a cleaning tool supply state, wherein in the base supply state, a cleaning fluid is fluidly connected to the base supply line, and in the cleaning tool supply state, a second cleaning fluid is fluidly connected to the cleaning tool supply line, and wherein the fluid switching valve is connected to a suction switching valve, such that when the suction switching valve is in the base suction state, the fluid switching valve is in the base supply state, and when the section switching valve is in the cleaning tool suction state, the fluid switching valve is in the cleaning tool supply state.

[0223] According to another aspect of this disclosure, a suction switching valve is connected to a fluid switching valve via a connecting rod having at least one valve engagement surface for contacting at least one valve member to move the fluid switching valve to a base supply state or a cleaning tool supply state.

[0224] According to another aspect of this disclosure, the suction switching valve includes a cam configured to cause linear movement of a cam follower, wherein a connecting rod is coupled to the cam follower.

[0225] According to another aspect of this disclosure, the extractable cleaner further includes a fluid switching valve having a base supply state and a cleaning tool supply state. In the base supply state, a cleaning fluid is fluidly connected to a base supply line, which is connected to at least one fluid dispensing nozzle at the base. In the cleaning tool supply state, a second cleaning fluid is fluidly connected to a cleaning tool supply line, which is fluidly connected to at least one cleaning tool fluid dispensing nozzle. According to another aspect of this disclosure, the cleaning fluid is different from the second cleaning fluid.

[0226] According to another aspect of this disclosure, the fluid switching valve includes a first fluid inlet port, a second fluid inlet port, a pump outlet port, a pump inlet port, a base outlet port, and a cleaning tool outlet port. The first fluid inlet port is fluidly connected to receive cleaning fluid, the second fluid inlet port is fluidly connected to receive second cleaning fluid, the pump outlet port is connected to the inlet port of a pump, the pump inlet port is fluidly connected to the outlet of a pump, the base outlet port is fluidly connected to a base supply line, and the cleaning tool outlet port is fluidly connected to a cleaning tool supply line.

[0227] According to another aspect of this disclosure, a fluid switching valve includes at least one valve member, wherein when the fluid switching valve is in a base supply state, the at least one valve member fluidly connects a first fluid inlet port to a pump outlet port and fluidly connects a pump inlet port to a base outlet port, and blocks fluid communication from a second fluid inlet port to the pump outlet port and from the pump inlet port to a cleaning tool outlet port; and when the fluid switching valve is in a cleaning tool supply state, the at least one valve member fluidly connects a second fluid inlet port to the pump outlet port and fluidly connects a pump inlet port to a cleaning tool outlet port, and blocks fluid communication from the first fluid inlet port to the pump outlet port and from the pump inlet port to the base outlet port.

[0228] According to another aspect of this disclosure, at least one valve member includes a first valve member disposed in a first chamber and a second valve member disposed in a second chamber, wherein when the first valve member is in a first position in the first chamber and the second valve member is in a first position in the second chamber, the fluid switching valve is in a base supply state, and when the first valve member is in a second position in the first chamber and the second valve member is in a second position in the second chamber, the fluid switching valve is in a cleaning tool supply state.

[0229] According to another aspect of this disclosure, the extraction cleaner further includes a mixing valve having a first mixing valve inlet, a second mixing valve inlet, a first mixing valve outlet, and a second mixing valve outlet. The first mixing valve inlet, the second mixing valve inlet, and the first mixing valve outlet are fluidly connected to a mixing chamber, whereby a first fluid received at the first mixing valve inlet and a second fluid received at the second inlet are mixed in the mixing chamber, and a mixture of the first and second fluids is provided at the first mixing valve outlet. The first mixing valve inlet is fluidly connected to the second mixing valve outlet for providing the first fluid received at the first mixing valve inlet at the second mixing valve outlet. According to another aspect of this disclosure, the second mixing valve outlet is fluidly connected to a first fluid inlet port of a fluid switching valve, and the first mixing valve outlet is fluidly connected to a second fluid inlet port of a fluid switching valve.

[0230] According to another aspect of this disclosure, the extractable cleaner further includes: a flexible hose; a cleaning tool coupled to the flexible hose and having a suction inlet, wherein an airflow path for the cleaning tool extends from the suction inlet and through the flexible hose; at least one cleaning tool fluid dispensing nozzle coupled to the cleaning tool; an auxiliary tank for storing a second cleaning fluid; and a valve fluidly coupled to the auxiliary tank for controlling the supply of the second cleaning fluid to at least one fluid dispensing nozzle or the cleaning tool fluid dispensing nozzle.

[0231] According to another aspect of this disclosure, the extractable cleaner also includes a controller configured to control a valve to stop supplying a second cleaning fluid to at least one fluid dispensing nozzle or cleaning tool fluid dispensing nozzle after a predetermined time period.

[0232] According to another aspect of this disclosure, the extractable cleaner also includes a flow sensor and a controller, the flow sensor being fluidly connected to the output of the supply tank, and the controller being configured to control a valve in response to the output of the flow sensor to stop supplying a second cleaning fluid to at least one fluid dispensing nozzle or cleaning tool fluid dispensing nozzle.

[0233] According to another aspect of this disclosure, the extractable cleaner further includes a flow sensor and a controller, the flow sensor being fluidly connected to the output of the auxiliary tank, and the controller being configured to illuminate an indicator light in response to the output of the flow sensor to indicate that a second cleaning fluid is being delivered from the auxiliary tank.

[0234] According to another aspect of this disclosure, a pull-out cleaner is provided, comprising: a base; an upright body pivotally connected to the base; at least one base fluid dispensing nozzle connected to the base, the at least one base fluid dispensing nozzle being configured to directly or indirectly dispense a first fluid to a surface to be cleaned; a flexible hose; a cleaning tool connected to the flexible hose; at least one cleaning tool fluid dispensing nozzle connected to the cleaning tool, the at least one cleaning tool fluid dispensing nozzle being configured to directly or indirectly dispense a second fluid to a target surface; a supply tank for storing the first cleaning fluid; an auxiliary tank for storing the second cleaning fluid; and at least one fluid switching valve fluidly connected to the at least one base fluid dispensing nozzle and the at least one cleaning fluid dispensing nozzle, the at least one fluid switching valve having a base supply state and a cleaning tool supply state, wherein in the base supply state, the first cleaning fluid is fluidly connected to the at least one base fluid dispensing nozzle, and in the cleaning tool supply state, the second cleaning fluid is fluidly connected to the at least one cleaning tool fluid dispensing nozzle.

[0235] According to another aspect of this disclosure, when at least one fluid switching valve is in the base supply state, the second cleaning fluid is not supplied to at least one base fluid distribution nozzle.

[0236] According to another aspect of this disclosure, when at least one fluid switching valve is in the cleaning tool supply state, a mixture of a first cleaning fluid and a second cleaning fluid is supplied to at least one base fluid distribution nozzle.

[0237] According to another aspect of this disclosure, the second cleaning fluid includes an enhancing fluid having a first pH, mixed with a base cleaning fluid having a second pH, wherein the second pH is greater than the first pH. The first pH may be less than or equal to about 4.5, and the second pH may be greater than or equal to about 9. The enhancing fluid may include hydrogen peroxide.

[0238] According to another aspect of this disclosure, the fluid switching valve includes a first fluid inlet port, a second fluid inlet port, a pump outlet port, a pump inlet port, a base outlet port, and a cleaning tool outlet port. The first fluid inlet port is fluidly connected to receive a first cleaning fluid, and the second fluid inlet port is fluidly connected to receive a second cleaning fluid. The pump outlet port is connected to the inlet port of a pump, the pump inlet port is fluidly connected to the outlet of a pump, the base outlet port is fluidly connected to at least one base fluid dispensing nozzle, and the cleaning tool outlet port is fluidly connected to at least one cleaning tool fluid dispensing nozzle.

[0239] According to another aspect of this disclosure, a fluid switching valve includes at least one valve member, wherein when the fluid switching valve is in a base supply state, the at least one valve member fluidly connects a first fluid inlet port to a pump outlet port and fluidly connects a pump inlet port to a base outlet port, and blocks fluid communication from a second fluid inlet port to the pump outlet port and from the pump inlet port to a cleaning tool outlet port; and when the fluid switching valve is in a cleaning tool supply state, the at least one valve member fluidly connects a second fluid inlet port to the pump outlet port and fluidly connects a pump inlet port to a cleaning tool outlet port, and blocks fluid communication from the first fluid inlet port to the pump outlet port and from the pump inlet port to the base outlet port.

[0240] According to another aspect of this disclosure, at least one valve member includes a first valve member disposed in a first chamber and a second valve member disposed in a second chamber, wherein when the first valve member is in a first position in the first chamber and the second valve member is in a first position in the second chamber, the fluid switching valve is in a base supply state, and when the first valve member is in a second position in the first chamber and the second valve member is in a second position in the second chamber, the fluid switching valve is in a cleaning tool supply state.

[0241] According to another aspect of this disclosure, the extractable cleaner further includes a mixing valve having a first mixing valve inlet, a second mixing valve inlet, a first mixing valve outlet, and a second mixing valve outlet, the first mixing valve inlet, the second mixing valve inlet, and the first mixing valve outlet being fluidly connected to a mixing chamber, whereby a first fluid received at the first mixing valve inlet and a second fluid received at the second inlet are mixed in the mixing chamber, and a mixture of the first fluid and the second fluid is provided at the first mixing valve outlet, the first mixing valve inlet being fluidly connected to the second mixing valve outlet for providing the first fluid received at the first mixing valve inlet at the second mixing valve outlet, wherein the second mixing valve outlet is fluidly connected to a first fluid inlet port of a fluid switching valve, and the first mixing valve outlet is fluidly connected to a second fluid inlet port of a fluid switching valve.

[0242] According to another aspect of this disclosure, the base includes a base suction inlet configured to be positioned adjacent to the surface to be cleaned, and the cleaning tool includes a cleaning tool suction inlet configured to be positioned adjacent to the target surface. The extraction cleaner also includes a recovery tank configured to receive recovered fluid extracted from the surface to be cleaned by suction established at the base suction inlet or from the target surface by suction established at the cleaning tool suction inlet.

[0243] According to another aspect of this disclosure, the extraction cleaner further includes a suction switching valve comprising: a base inlet port fluidly connected to a base suction inlet; a cleaning tool inlet port fluidly connected to a cleaning tool suction inlet; and an outlet port fluidly connected to a recovery tank. The suction switching valve has a base suction state and a cleaning tool suction state. In the base suction state, the outlet port is fluidly connected to the base inlet port for receiving recovered fluid from the surface to be cleaned through the base suction inlet and entering the recovery tank. In the cleaning tool suction state, the outlet port is fluidly connected to the cleaning tool suction inlet for receiving recovered fluid from the target surface through the cleaning tool inlet port and entering the recovery tank.

[0244] According to another aspect of this disclosure, the suction switching valve includes: a housing defining a base inlet port, a cleaning tool inlet port, an outlet port, and a rotor cavity; and a rotor rotatably disposed in the rotor cavity and including a plug, the rotor being rotatable between a first orientation and a second orientation, wherein in the first orientation the suction switching valve is in a base suction state and the plug prevents fluid communication between the outlet port and the cleaning tool inlet port, and in the second orientation the suction switching valve is in a cleaning tool suction state and the plug prevents fluid communication between the outlet port and the base inlet port.

[0245] According to another aspect of this disclosure, the rotor includes a handle that extends outward from the rotor and is configured to be operated by a user to move the rotor between a first orientation and a second orientation.

[0246] According to another aspect of this disclosure, when the upright portion is in an upright position, the suction switching valve is in the cleaning tool suction state, and when the upright portion tilts from the upright position, the suction switching valve automatically switches to the base suction state.

[0247] According to another aspect of this disclosure, the fluid switching valve is connected to the suction switching valve, such that when the suction switching valve is in the base suction state, the fluid switching valve is in the base supply state, and when the section switching valve is in the cleaning tool suction state, the fluid switching valve is in the cleaning tool supply state.

[0248] According to another aspect of this disclosure, a suction switching valve is connected to a fluid switching valve via a connecting rod having at least one valve engagement surface for contacting at least one valve member to move the fluid switching valve to a base supply state or a cleaning tool supply state.

[0249] According to another aspect of this disclosure, the suction switching valve includes a cam configured to cause linear movement of a cam follower, wherein a connecting rod is coupled to the cam follower.

[0250] According to another aspect of this disclosure, a suction cleaner is provided, comprising: a base; an upright body pivotally connected to the base; at least one base fluid dispensing nozzle connected to the base, the at least one base fluid dispensing nozzle being configured to directly or indirectly dispense a first fluid to a surface to be cleaned; a base suction inlet disposed at the bottom of the base and configured to be positioned adjacent to the surface to be cleaned; a flexible hose; a cleaning tool connected to the flexible hose; at least one cleaning tool fluid dispensing nozzle connected to the cleaning tool, the at least one cleaning tool fluid dispensing nozzle being configured to directly or indirectly dispense a second fluid to a target surface; a cleaning tool suction inlet disposed at the bottom of the cleaning tool and configured to be positioned adjacent to the target surface; a recovery tank configured to receive recovery fluid, the recovery fluid being extracted from the surface to be cleaned by suction established at the base suction inlet or from the target surface by suction established at the cleaning tool suction inlet; and a suction switching valve, the suction switching valve comprising: a base inlet... The system comprises: a base inlet port fluidly connected to a base suction inlet; a cleaning tool inlet port and an outlet port; a cleaning tool inlet port fluidly connected to a cleaning tool suction inlet; and an outlet port fluidly connected to a recovery tank. A suction switching valve has a base suction state and a cleaning tool suction state. In the base suction state, the outlet port is fluidly connected to the base inlet port for receiving recovered fluid from the surface to be cleaned through the base suction inlet and entering the recovery tank. In the cleaning tool suction state, the outlet port is fluidly connected to the cleaning tool suction inlet for receiving recovered fluid from the target surface through the cleaning tool inlet port and entering the recovery tank. The system also includes a supply tank for storing a first cleaning fluid; an auxiliary tank for storing a second cleaning fluid; and at least one fluid switching valve having a base supply state and a cleaning tool supply state. In the base supply state, the first cleaning fluid is fluidly connected to at least one base fluid distribution nozzle. In the cleaning tool supply state, the second cleaning fluid is fluidly connected to at least one cleaning tool fluid distribution nozzle.

[0251] According to another aspect of this disclosure, a method of operating a retractable cleaner is provided, the retractable cleaner including a base portion pivotally connected to an upright body and a cleaning tool connected to a flexible hose, the method comprising: fluidly connecting a first cleaning fluid stored in a supply tank to at least one base fluid distribution nozzle for dispensing the first cleaning fluid directly or indirectly to a surface to be cleaned, the base fluid distribution nozzle being connected to the base; and fluidly connecting a second cleaning fluid stored in an auxiliary tank to at least one cleaning tool fluid distribution nozzle for dispensing the second cleaning fluid directly or indirectly to a target surface, the cleaning tool fluid distribution nozzle being connected to the cleaning tool, wherein the second cleaning fluid is not supplied to at least one base fluid distribution nozzle when the first cleaning fluid is supplied to the at least one base fluid distribution nozzle.

[0252] According to another aspect of this disclosure, a method for cleaning carpets or fabrics is provided, comprising the steps of: providing a water-based cleaning solution and a water-based oxidizing solution, wherein the water-based cleaning solution has a pH greater than 7.0 and contains water, a metal chelating agent, and carbonate anions (CO3-). 2- The water-based oxidizing solution contains water and peroxides, and has a pH less than 7.0. A free radical scavenger is present in the water-based cleaning solution and / or the water-based oxidizing solution. The water-based cleaning solution is then mixed with the water-based oxidizing solution and dispensed onto carpets or fabrics. The mixed composition has a pH of 9.0 to 10.0 and contains water at a molar concentration of 5.0 x 10⁻⁶. -2 Up to 2.1x10 -1 The peroxide concentration was 1.70 x 10⁻⁶. -3 Up to 5.2x10 -3 Metal chelating agent, molar concentration of 1x10 -2 Up to 5.0x10 -2 carbonate anion (CO3) 2- ) and a molar concentration of 2.0 x 10 -3 Up to 1.1x10 -1 Free radical scavengers.

[0253] According to another aspect of this disclosure, a kit for cleaning carpets or fabrics is provided, comprising water, a metal chelating agent, and water-soluble carbonate anions (CO3-) with a pH greater than 7.0. 2- The first aqueous cleaning solution and the second aqueous oxidizing solution, with a pH less than 7.0, comprising water and a peroxide compound. A free radical scavenger is present in the aqueous cleaning solution and / or the aqueous oxidizing solution. The first and second aqueous solutions are configured to combine and provide a water-based carpet or fabric cleaning composition comprising water at a molar concentration of 5.0 x 10⁻⁶. -2 Up to 2.1x10 -1 The peroxide concentration was 1.70 x 10⁻⁶. -3 Up to 5.2x10 -3 Metal chelating agent, molar concentration of 1x10 -2 Up to 5.0x10 -2 carbonate anion (CO3) 2- The molar concentration is 2.0 x 10⁻⁶. -3 Up to 1.1x10 -1 A free radical scavenger, wherein the pH of the water-based carpet or fabric cleaning composition is 9.0 to 10.0.

[0254] According to another aspect of this disclosure, a pull-out cleaner is provided, comprising: a cleaner body including a pump and a suction motor; a flexible hose including a fluid delivery path fluidly connected to the pump and a recovery path fluidly connected to the suction motor; a supply tank configured to be removably connected to the cleaner body and configured to be fluidly connected to the fluid delivery path, the supply tank including a relatively alkaline first water-based cleaning solution; an auxiliary tank configured to be fluidly connected to the fluid delivery path, the auxiliary tank including a relatively acidic second water-based oxidizing solution; a recovery tank configured to be removably connected to the cleaner body and configured to be fluidly connected to the recovery path; and a cleaning tool configured to be fluidly connected to the supply tank, auxiliary tank, and recovery tank.

[0255] According to another aspect of this disclosure, a suction cleaner is provided, comprising: a cleaner body including a pump and a suction motor; a supply line fluidly connected to the pump; and an airflow path fluidly connected to the suction motor; a supply tank configured to be removably connected to the cleaner body and fluidly connected to the supply line, the supply tank comprising a relatively alkaline first water-based cleaning solution; an auxiliary tank configured to be fluidly connected to the supply line, the auxiliary tank comprising a relatively acidic second water-based oxidizing solution; and a recovery tank configured to be removably connected to the cleaner body and fluidly connected to the airflow path.

[0256] In some cases, the first water-based cleaning solution and the second water-based oxidizing solution can be mixed before being applied to the surface to be cleaned to form a water-based cleaning composition. In some cases, the water-based cleaning composition may contain water with a molar concentration of 5.0 x 10⁻⁶. -2 Up to 2.1x10 -1 The peroxide concentration was 1.70 x 10⁻⁶. -3 Up to 5.2x10 -3 Metal chelating agent, molar concentration of 1x10 -2 Up to 5.0x10 -2 carbonate anion (CO3) 2- The molar concentration is 2.0 x 10⁻⁶. -3 Up to 1.1x10 -1The composition is a free radical scavenger, wherein the pH of the composition is 9.0 to 10.0. In some cases, the peroxide compound may include hydrogen peroxide. In some cases, the peroxide compound may include sodium peroxide or urea hydrogen peroxide. In some cases, the peroxide compound may include alkyl hydroperoxide or aryl hydroperoxide. In some cases, the free radical scavenger may be selected from the group consisting of glycine, sarcosine, lysine, serine, glutamic acid, and mixtures thereof. In some cases, the free radical scavenger may be selected from the group consisting of 2-methoxyethylamine, glucosamine, morpholine, piperidine, ethylamine, and 3-amino-1-propanol, and mixtures thereof. In some cases, the metal chelating agent may have a relatively higher binding affinity for transition metals than for divalent calcium and magnesium ions. In some cases, the metal chelating agent may include ethylenediamine-N,N'-disuccinic acid.

[0257] According to another aspect of this disclosure, a water-based carpet or fabric cleaning composition is provided, comprising water with a molar concentration of 5.0 x 10⁻⁶. -2 Up to 2.1x10 -1 The peroxide concentration was 1.70 x 10⁻⁶. -3 Up to 5.2x10 -3 Metal chelating agent, molar concentration of 1x10 -2 Up to 5.0x10 -2 carbonate anion (CO3) 2- The molar concentration is 2.0 x 10⁻⁶. -3 Up to 1.1x10 -1 The free radical scavenger, wherein the pH of the composition is 9.0 to 10.0.

[0258] In some cases, the peroxide compound may include hydrogen peroxide. In some cases, the peroxide compound may include sodium peroxide or urea hydrogen peroxide. In some cases, the peroxide compound may include alkyl hydroperoxide or aryl hydroperoxide. In some cases, the free radical scavenger may be selected from the group consisting of glycine, sarcosine, lysine, serine, glutamic acid, and mixtures thereof. In some cases, the free radical scavenger may be selected from the group consisting of 2-methoxyethylamine, glucosamine, morpholine, piperidine, ethylamine, and 3-amino-1-propanol, and mixtures thereof. In some cases, the metal chelating agent may have a relatively higher binding affinity for transition metals than for divalent calcium and magnesium ions. In some cases, the metal chelating agent may include ethylenediamine-N,N'-disuccinic acid.

[0259] According to another aspect of this disclosure, a method for cleaning carpets or fabrics is provided, the method comprising the steps of: providing a water-based cleaning solution and a water-based oxidizing solution, wherein the water-based cleaning solution has a pH greater than 7.0 and contains water, a metal chelating agent, and water-soluble carbonate anions (CO3-). 2-The water-based oxidizing solution contains water and peroxides, and the pH of the water-based cleaning solution is less than 7.0. A free radical scavenger is present in the water-based cleaning solution and / or the water-based oxidizing solution. The water-based cleaning solution is mixed with the water-based oxidizing solution and dispensed onto carpets or fabrics, wherein the mixed composition has a pH of 9.0 to 10.0 and contains water at a molar concentration of 5.0 x 10⁻⁶. -2 Up to 2.1x10 -1 The peroxide concentration was 1.70 x 10⁻⁶. -3 Up to 5.2x10 -3 Metal chelating agent, molar concentration of 1x10 -2 Up to 5.0x10 -2 carbonate anion (CO3) 2- ) and a molar concentration of 2.0 x 10 -3 Up to 1.1x10 -1 Free radical scavengers.

[0260] In some cases, the peroxide compound may include hydrogen peroxide. In some cases, the peroxide compound may include sodium peroxide, urea hydrogen peroxide, or mixtures thereof. In some cases, the peroxide compound may include alkyl hydroperoxides or aryl hydroperoxides. In some cases, the free radical scavenger may be selected from the group consisting of glycine, sarcosine, lysine, serine, glutamic acid, and mixtures thereof. In some cases, the free radical scavenger may be selected from the group consisting of 2-methoxyethylamine, glucosamine, morpholine, piperidine, ethylamine, and 3-amino-1-propanol, and mixtures thereof. In some cases, the metal chelating agent may have a relatively higher binding affinity for transition metals than for divalent calcium and magnesium ions. In some cases, the metal chelating agent may include ethylenediamine-N,N'-disuccinic acid. In some cases, the water-soluble carbonate anion source may include alkali metal carbonates or alkali metal bicarbonates. In some cases, the carbonate anion source may be selected from the group consisting of sodium bicarbonate, potassium bicarbonate, potassium carbonate, and sodium carbonate.

[0261] According to another aspect of this disclosure, a kit for cleaning carpets or fabrics is provided, the kit comprising: a first water-based cleaning solution with a pH greater than 7.0, the first water-based cleaning solution comprising water, a metal chelating agent, and water-soluble carbonate anions (CO3-). 2- Source; a second aqueous oxidizing solution with a pH less than 7.0, comprising water and a peroxide compound; a free radical scavenger present in the aqueous cleaning solution and / or the aqueous oxidizing solution, wherein the first and second aqueous solutions are configured to combine and provide a water-based carpet or fabric cleaning composition comprising water at a molar concentration of 5.0 x 10⁻⁶. -2 Up to 2.1x10 -1 The peroxide concentration was 1.70 x 10⁻⁶. -3 Up to 5.2x10-3 Metal chelating agent, molar concentration of 1x10 -2 Up to 5.0x10 -2 carbonate anion (CO3) 2- The molar concentration is 2.0 x 10⁻⁶. -3 Up to 1.1x10 -1 A free radical scavenger, wherein the water-based carpet or fabric cleaning composition has a pH of 9.0 to 10.0.

[0262] In some cases, the peroxide compound may include hydrogen peroxide. In some cases, the free radical scavenger may be selected from the group consisting of glycine, sarcosine, lysine, serine, glutamic acid, and mixtures thereof. In some cases, the free radical scavenger may be selected from the group consisting of 2-methoxyethylamine, glucosamine, morpholine, piperidine, ethylamine, and 3-amino-1-propanol, and mixtures thereof. In some cases, the metal chelating agent may have a relatively higher binding affinity for transition metals than for divalent calcium and magnesium ions. In some cases, the metal chelating agent may include ethylenediamine-N,N'-disuccinic acid. In some cases, the water-soluble carbonate anion source may include alkali metal carbonates or alkali metal bicarbonates.

[0263] The foregoing description of exemplary embodiments has been presented for purposes of illustration and description. It is not intended to be exhaustive or to limit this disclosure to the precise forms disclosed. Many modifications and variations are possible with respect to this disclosure. The scope of this disclosure is intended to be limited not by this detailed description, but by the appended claims. Future applications claiming priority to this application may claim protection for the disclosed subject matter in different ways and may generally include any set of one or more limitations as disclosed or otherwise shown herein.

[0264] Therefore, it should be understood that the foregoing embodiments are presented by way of example only, and the invention may be practiced in ways different from the specific description and claims within the scope of the appended claims and their equivalents. This invention relates to each individual feature, aspect, embodiment, system, article, material, kit, and / or method described herein. Furthermore, any combination of two or more such features, aspects, embodiments, systems, articles, materials, kits, and / or methods is included within the scope of this invention if such features, systems, articles, materials, kits, and / or methods do not contradict each other.

[0265] The functions of the various elements shown in the diagram, including any functional blocks labeled as controllers or processors, can be provided using dedicated hardware and hardware associated with appropriate software capable of executing it. These functions can be provided by a single dedicated processor, a single shared processor, or multiple separate processors, some of which may be shared. Furthermore, the explicit use of the term controller or processor should not be construed as specifically referring to hardware capable of executing software, and may implicitly include, but is not limited to, digital signal processor (DSP) hardware, network processors, application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), read-only memory (ROM) for storing software, random access memory (RAM), and non-volatile memory. Other conventional and / or custom hardware may also be included.

[0266] As used herein in the specification and claims, the phrase “and / or” should be understood to mean “any one or both” of the elements so combined, that is, elements that exist together in some cases and separately in others. Other elements may optionally exist in addition to those specifically identified by the “and / or” clause, whether related to or unrelated to those specifically identified, unless the contrary is explicitly stated.

[0267] As used herein, the term "connection" refers to any link, coupling, or connection through which a signal carried by a system element is transmitted to the "connected" element. Such a "connected" device or signal and equipment are not necessarily directly connected to each other and can be separated by an intermediate component or device that can manipulate or modify such signals. Similarly, the terms "connection" or "coupling" used herein with respect to mechanical or physical connections or couplings are relative terms and do not necessarily require a direct physical connection.

[0268] Unless otherwise specified herein, any element, component, module, or part thereof described and / or shown in the accompanying drawings that communicates, is associated with, and / or is based on other things shall be understood to be capable of such communication, association, and / or being based on other things directly and / or indirectly.

[0269] Unless otherwise stated, the use of the word "substantially" can be interpreted to include precise relationships, conditions, arrangements, orientations, and / or other characteristics, as well as deviations thereof as understood by one of ordinary skill in the art, provided that such deviations do not materially affect the disclosed methods and systems. Throughout this disclosure, unless otherwise expressly stated, the use of the articles "a" and / or "an" and / or "the" to modify nouns can be understood as convenience and includes one or more of the modified nouns. The terms "comprising," "including," and "having" are intended to be inclusive and mean that additional elements may be present in addition to those listed.

[0270] As used in this article, when referring to quantity, the terms “nominal” or “nominally” are used to mean a specified or theoretical quantity that may differ from the actual quantity.

[0271] For ease of description, spatial relative terms such as “below,” “under,” “above,” “down,” “above,” “left,” and “right” are used herein to describe the relationship between one element or feature and another, as shown in the accompanying drawings. These spatial relative terms are intended to cover different orientations of the device in use or operation, in addition to those shown in the drawings. For example, if the device in the drawings is flipped, an element described as “below” or “under” other elements or features would be oriented as “above” other elements or features. Thus, the exemplary term “below” can encompass both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptors used herein shall be interpreted accordingly.

[0272] Although the terms "first," "second," "third," etc., can be used to describe various elements, components, regions, layers, and / or sections, these elements, components, regions, layers, and / or sections are not limited by these terms, as they are only used to distinguish one element, component, region, layer, or section from another. Therefore, without departing from the scope and teachings of this invention, a first element, component, region, layer, or section may be referred to as a second element, component, region, layer, or section.

[0273] Although the methods and systems have been described with respect to their specific embodiments, they are not limited thereto. It is evident that many modifications and variations can become apparent from the foregoing teachings. Those skilled in the art can make numerous additional changes to the details, materials, and arrangement of the components described and illustrated herein.

Claims

1. A pull-out cleaner, comprising: Base; An upright body, pivotally connected to the base; At least one base fluid dispensing nozzle is coupled to the base, the at least one base fluid dispensing nozzle being configured to dispense a first fluid directly or indirectly to the surface to be cleaned; Flexible hose; A cleaning tool, which is connected to the flexible hose; At least one cleaning tool fluid dispensing nozzle is connected to the cleaning tool, the at least one cleaning tool fluid dispensing nozzle being configured to dispense a second fluid directly or indirectly onto a target surface; A supply tank, used to store the initial cleaning fluid; An auxiliary tank for storing a second cleaning fluid; And at least one fluid switching valve fluidly connected to the at least one base fluid distribution nozzle and the at least one cleaning fluid distribution nozzle, the at least one fluid switching valve having a base supply state and a cleaning tool supply state, wherein in the base supply state, the first cleaning fluid is fluidly connected to the at least one base fluid distribution nozzle, and in the cleaning tool supply state, the second cleaning fluid is fluidly connected to the at least one cleaning tool fluid distribution nozzle.

2. The extraction cleaner according to claim 1, wherein when the at least one fluid switching valve is in the base supply state, the second cleaning fluid is not supplied to the at least one base fluid distribution nozzle.

3. The extraction cleaner according to claim 1, wherein when the at least one fluid switching valve is in the cleaning tool supply state, a mixture of the first cleaning fluid and the second cleaning fluid is supplied to the at least one base fluid distribution nozzle.

4. The extraction cleaner of claim 1, wherein the second cleaning fluid comprises an enhancement fluid having a first pH that is mixed with a base cleaning fluid having a second pH, wherein the second pH is greater than the first pH.

5. The extraction cleaner of claim 4, wherein the first pH is less than or equal to about 4.5 and the second pH is greater than or equal to about 9.

6. The extraction cleaner of claim 4, wherein the enhancing fluid comprises hydrogen peroxide.

7. The extraction cleaner of claim 1, wherein the fluid switching valve comprises a first fluid inlet port, a second fluid inlet port, a pump outlet port, a pump input port, a base outlet port, and a cleaning tool outlet port, the first fluid inlet port being fluidly connected to receive the first cleaning fluid, and the second fluid inlet port being fluidly connected to receive the second cleaning fluid, the pump outlet port being connected to the inlet port of a pump, the pump input port being fluidly connected to the outlet of the pump, the base outlet port being fluidly connected to the at least one base fluid dispensing nozzle, and the cleaning tool outlet port being fluidly connected to the at least one cleaning tool fluid dispensing nozzle.

8. The extraction cleaner of claim 7, wherein the fluid switching valve comprises at least one valve member, wherein when the fluid switching valve is in the base supply state, the at least one valve member fluidly connects the first fluid inlet port to the pump outlet port and fluidly connects the pump inlet port to the base outlet port, and prevents fluid communication from the second fluid inlet port to the pump outlet port and from the pump inlet port to the cleaning tool outlet port, and When the fluid switching valve is in the cleaning tool supply state, the at least one valve component fluidly connects the second fluid input port to the pump output port and the pump input port to the cleaning tool output port, and prevents fluid communication from the first fluid input port to the pump output port and from the pump input port to the base output port.

9. The extractable cleaner of claim 8, wherein the at least one valve member comprises a first valve member disposed in a first chamber and a second valve member disposed in a second chamber, wherein when the first valve member is in a first position in the first chamber and the second valve member is in a first position in the second chamber, the fluid switching valve is in the base supply state, and when the first valve member is in a second position in the first chamber and the second valve member is in a second position in the second chamber, the fluid switching valve is in the cleaning tool supply state.

10. The extractable cleaner of claim 7, further comprising a mixing valve having a first mixing valve inlet, a second mixing valve inlet, a first mixing valve outlet, and a second mixing valve outlet, the first mixing valve inlet, the second mixing valve inlet, and the first mixing valve outlet being fluidly connected to a mixing chamber, whereby a first fluid received at the first mixing valve inlet and a second fluid received at the second input port are mixed in the mixing chamber, and a mixture of the first fluid and the second fluid is provided at the first mixing valve outlet, the first mixing valve inlet being fluidly connected to the second mixing valve outlet for providing the first fluid received at the first mixing valve inlet at the second mixing valve outlet, wherein the second mixing valve outlet is fluidly connected to the first fluid input port of the fluid switching valve, and the first mixing valve outlet is fluidly connected to the second fluid input port of the fluid switching valve.

11. The extraction cleaner of claim 1, wherein the base includes a base suction inlet configured to be positioned adjacent to the surface to be cleaned, and wherein the cleaning tool includes a cleaning tool suction inlet configured to be positioned adjacent to the target surface, the extraction cleaner further comprising a recovery tank configured to receive recovered fluid extracted from the surface to be cleaned by suction established at the base suction inlet or from the target surface by suction established at the cleaning tool suction inlet.

12. The extraction cleaner according to claim 11, further comprising a suction switching valve, the suction switching valve comprising: The base inlet port is fluidly connected to the base suction port; The cleaning tool inlet port is fluidly connected to the cleaning tool suction inlet; and The outlet port is fluidly connected to the recycling tank. The suction switching valve has a base suction state and a cleaning tool suction state. In the base suction state, the outlet port is fluidly connected to the base inlet port to receive the recovered fluid from the surface to be cleaned through the base suction inlet and enter the recovery tank. In the cleaning tool suction state, the outlet port is fluidly connected to the cleaning tool suction inlet to receive the recovered fluid from the target surface through the cleaning tool inlet port and enter the recovery tank.

13. The extraction cleaner according to claim 12, wherein the suction switching valve comprises: A housing that defines the base inlet port, the cleaning tool inlet port, the outlet port, and the rotor cavity; as well as A rotor, rotatably arranged in the rotor cavity and including a plug, is rotatable between a first orientation and a second orientation, wherein in the first orientation the suction switching valve is in the base suction state and the plug prevents fluid communication between the outlet port and the cleaning tool inlet port, and in the second orientation the suction switching valve is in the cleaning tool suction state and the plug prevents fluid communication between the outlet port and the base inlet port.

14. The extractor cleaner of claim 13, wherein the rotor includes a handle that extends outward from the rotor and is configured to be operated by a user to move the rotor between the first orientation and the second orientation.

15. The extraction cleaner according to claim 12, wherein when the upright portion is in an upright position, the suction switching valve is in the suction state of the cleaning tool, and when the upright portion tilts from the upright position, the suction switching valve automatically transitions to the base suction state.

16. The extraction cleaner of claim 12, wherein the fluid switching valve is coupled to the suction switching valve, such that when the suction switching valve is in the base suction state, the fluid switching valve is in the base supply state, and when the suction switching valve is in the cleaning tool suction state, the fluid switching valve is in the cleaning tool supply state.

17. The extraction cleaner of claim 16, wherein the suction switching valve is connected to the fluid switching valve via a connecting rod, the connecting rod having at least one valve engagement surface for contacting at least one valve member to move the fluid switching valve to the base supply state or the cleaning tool supply state.

18. The extraction cleaner of claim 17, wherein the extraction switching valve includes a cam configured to cause linear movement of a cam follower, and wherein the connecting rod is coupled to the cam follower.

19. A pull-out cleaner, comprising: Base; An upright body, pivotally connected to the base; At least one base fluid dispensing nozzle is coupled to the base, the at least one base fluid dispensing nozzle being configured to dispense a first fluid directly or indirectly to the surface to be cleaned; A base suction inlet is disposed at the bottom of the base and configured to be positioned adjacent to the surface to be cleaned. Flexible hose; A cleaning tool, which is connected to the flexible hose; At least one cleaning tool fluid dispensing nozzle is connected to the cleaning tool, the at least one cleaning tool fluid dispensing nozzle being configured to dispense a second fluid directly or indirectly onto a target surface; A cleaning tool suction inlet is disposed at the bottom of the cleaning tool and configured for positioning adjacent to the target surface; A recovery tank is configured to receive recovered fluid drawn from the surface to be cleaned by suction established at the base suction inlet or from the target surface by suction established at the cleaning tool suction inlet. A suction switching valve, the suction switching valve comprising: The base inlet port is fluidly connected to the base suction port. The cleaning tool inlet port, which is fluidly connected to the cleaning tool suction inlet, and The outlet port is fluidly connected to the recycling tank. The suction switching valve has a base suction state and a cleaning tool suction state. In the base suction state, the outlet port is fluidly connected to the base inlet port for receiving the recovered fluid from the surface to be cleaned through the base suction inlet and entering the recovery tank. In the cleaning tool suction state, the outlet port is fluidly connected to the cleaning tool suction inlet for receiving the recovered fluid from the target surface through the cleaning tool inlet port and entering the recovery tank. A supply tank, used to store the initial cleaning fluid; Additional tank, which is used to store a second cleaning fluid; and At least one fluid switching valve has a base supply state and a cleaning tool supply state, wherein in the base supply state, a first cleaning fluid is fluidly connected to the at least one base fluid dispensing nozzle, and in the cleaning tool supply state, a second cleaning fluid is fluidly connected to the at least one cleaning tool fluid dispensing nozzle.

20. A method of operating a pull-out cleaner, the pull-out cleaner comprising a base portion pivotally connected to an upright body and a cleaning tool connected to a flexible hose, the method comprising: The first cleaning fluid stored in the supply tank is fluidly connected to at least one base fluid dispensing nozzle connected to the base, for dispensing the first cleaning fluid directly or indirectly to the surface to be cleaned; as well as The second cleaning fluid stored in the auxiliary tank is fluidly connected to at least one cleaning tool fluid dispensing nozzle connected to the cleaning tool, for dispensing the second cleaning fluid directly or indirectly onto the target surface. When the first cleaning fluid is supplied to the at least one base fluid distribution nozzle, the second cleaning fluid is not supplied to the at least one base fluid distribution nozzle.

21. A pull-out cleaner, comprising: The main body of the cleaner includes a pump and a suction motor; The supply line to the pump is fluidly connected and the airflow path to the suction motor is fluidly connected; A supply tank, configured to be removably coupled to the cleaner body and configured to be fluidly coupled to the supply line, the supply tank comprising a relatively alkaline first water-based cleaning solution; An auxiliary tank, configured to be fluidly connected to the supply line, comprises a relatively acidic second water-based oxidizing solution; and The recycling bin is configured to be removably attached to the cleaner body and to be fluidly connected to the airflow path.

22. The extractable cleaner of claim 21, wherein the first water-based cleaning solution and the second water-based oxidation solution are mixed before being applied to the surface to form a water-based cleaning composition for cleaning the surface.

23. The extractable cleaner of claim 22, wherein the water-based cleaning composition comprises water and has a molar concentration of 5.0 x 10⁻⁶. -2 Up to 2.1x10 -1 The peroxide concentration was 1.70 x 10⁻⁶. -3 Up to 5.2x10 -3 Metal chelating agent, molar concentration of 1x10 -2 Up to 5.0x10 -2 carbonate anion (CO3) 2- The molar concentration is 2.0 x 10⁻⁶. -3 Up to 1.1x10 -1 The free radical scavenger, wherein the pH of the composition is 9.0 to 10.

0.

24. The extraction cleaner of claim 23, wherein the peroxide compound comprises hydrogen peroxide.

25. The extraction cleaner of claim 23, wherein the peroxide compound comprises sodium peroxide or urea hydrogen peroxide.

26. The extraction cleaner of claim 23, wherein the peroxide compound comprises alkyl hydroperoxide or aryl hydroperoxide.

27. The extraction cleaner of claim 23, wherein the free radical scavenger is selected from the group consisting of glycine, sarcosine, lysine, serine, glutamic acid, and mixtures thereof.

28. The extractable cleaner of claim 23, wherein the free radical scavenger is selected from the group consisting of 2-methoxyethylamine, glucosamine, morpholine, piperidine, ethylamine, and 3-amino-1-propanol, and mixtures thereof.

29. The extraction cleaner according to claim 23, wherein the metal chelating agent has a higher affinity for transition metals than for divalent calcium and magnesium ions.

30. The extraction cleaner of claim 23, wherein the metal chelating agent comprises ethylenediamine-N,N'-disuccinic acid.

31. A water-based carpet or fabric cleaning composition comprising water and a molar concentration of 5.0 x 10⁻⁶. -2 Up to 2.1x10 -1 The peroxide concentration was 1.70 x 10⁻⁶. -3 Up to 5.2x10 -3 Metal chelating agent, molar concentration of 1x10 -2 Up to 5.0x10 -2 carbonate anion (CO3) 2- The molar concentration is 2.0 x 10⁻⁶. -3 Up to 1.1x10 -1 The free radical scavenger, wherein the pH of the composition is 9.0 to 10.

0.

32. The water-based carpet or fabric cleaning composition of claim 31, wherein the peroxide compound comprises hydrogen peroxide.

33. The water-based carpet or fabric cleaning composition of claim 31, wherein the peroxide compound comprises sodium peroxide or urea hydrogen peroxide.

34. The water-based carpet or fabric cleaning composition of claim 31, wherein the peroxide compound comprises alkyl hydroperoxide or aryl hydroperoxide.

35. The water-based carpet or fabric cleaning composition of claim 31, wherein the free radical scavenger is selected from the group consisting of glycine, sarcosine, lysine, serine, glutamic acid, and mixtures thereof.

36. The water-based carpet or fabric cleaning composition of claim 31, wherein the free radical scavenger is selected from the group consisting of 2-methoxyethylamine, glucosamine, morpholine, piperidine, ethylamine, and 3-amino-1-propanol, and mixtures thereof.

37. The water-based carpet or fabric cleaning composition of claim 31, wherein the metal chelating agent has a higher affinity for transition metals than for divalent calcium and magnesium ions.

38. The water-based carpet or cleaning composition of claim 31, wherein the metal chelating agent comprises ethylenediamine-N,N'-disuccinic acid.

39. A method for cleaning carpets or fabrics, comprising the following steps: Provides a water-based cleaning solution and a water-based oxidation solution, wherein the water-based cleaning solution has a pH greater than 7.0 and contains water, a metal chelating agent, and water-soluble carbonate anions (CO3). 2- The source, wherein the water-based oxidation solution has a pH less than 7.0 and contains water and peroxides; Free radical scavenger, which is present in the aqueous cleaning solution and / or the aqueous oxidation solution; Mix the water-based cleaning solution with the water-based oxidation solution and apply it to carpets or fabrics; The mixed composition has a pH of 9.0 to 10.0 and contains water at a molar concentration of 5.0 x 10⁻⁶. -2 Up to 2.1x10 -1 The peroxide concentration was 1.70 x 10⁻⁶. -3 Up to 5.2x10 -3 Metal chelating agent, molar concentration of 1x10 -2 Up to 5.0x10 -2 carbonate anion (CO3) 2- ) and a molar concentration of 2.0 x 10 -3 Up to 1.1x10 -1 Free radical scavengers.

40. The method for cleaning carpets or fabrics according to claim 39, wherein the peroxide compound comprises hydrogen peroxide.

41. The method for cleaning carpets or fabrics according to claim 39, wherein the peroxide compound comprises sodium peroxide, urea hydrogen peroxide, or a mixture thereof.

42. The method for cleaning carpets or fabrics according to claim 39, wherein the peroxide compound comprises alkyl hydroperoxide or aryl hydroperoxide.

43. The method for cleaning carpets or fabrics according to claim 39, wherein the free radical scavenger is selected from the group consisting of glycine, sarcosine, lysine, serine, glutamic acid, and mixtures thereof.

44. The method for cleaning carpets or fabrics according to claim 39, wherein the free radical scavenger is selected from the group consisting of 2-methoxyethylamine, glucosamine, morpholine, piperidine, ethylamine, and 3-amino-1-propanol, and mixtures thereof.

45. The method for cleaning carpets or fabrics according to claim 39, wherein the metal chelating agent has a higher affinity for transition metals than for divalent calcium and magnesium ions.

46. ​​The method for cleaning carpets or fabrics according to claim 39, wherein the metal chelating agent comprises ethylenediamine-N,N'-disuccinic acid.

47. The method for cleaning carpets or fabrics according to claim 39, wherein the water-soluble carbonate anion source comprises an alkali metal carbonate or an alkali metal bicarbonate.

48. The method for cleaning carpets or fabrics according to claim 39, wherein the carbonate anion source is selected from the group consisting of sodium bicarbonate, potassium bicarbonate, potassium carbonate, and sodium carbonate.

49. A kit for cleaning carpets or fabrics, comprising: A first water-based cleaning solution with a pH greater than 7.0, comprising water, a metal chelating agent, and water-soluble carbonate anions (CO3-). 2- )source; A second aqueous-based oxidizing solution with a pH less than 7.0, comprising water and peroxides; Free radical scavenger, which is present in the aqueous cleaning solution and / or the aqueous oxidation solution; The first and second water-based solutions are configured to combine and provide a water-based carpet or fabric cleaning composition, the water-based carpet or fabric cleaning composition comprising water with a molar concentration of 5.0 x 10⁻⁶. -2 Up to 2.1x10 -1 The peroxide concentration was 1.70 x 10⁻⁶. -3 Up to 5.2x10 -3 Metal chelating agent, molar concentration of 1x10 -2 Up to 5.0x10 -2 carbonate anion (CO3) 2- The molar concentration is 2.0 x 10⁻⁶. -3 Up to 1.1x10 -1 The free radical scavenger, wherein the pH of the water-based carpet or fabric cleaning composition is 9.0 to 10.

0.

50. The kit for cleaning carpets or fabrics according to claim 49, wherein the peroxide compound comprises hydrogen peroxide.

51. The kit for cleaning carpets or fabrics according to claim 49, wherein the free radical scavenger is selected from the group consisting of glycine, sarcosine, lysine, serine, glutamic acid, and mixtures thereof.

52. The kit for cleaning carpets or fabrics according to claim 49, wherein the free radical scavenger is selected from the group consisting of 2-methoxyethylamine, glucosamine, morpholine, piperidine, ethylamine, and 3-amino-1-propanol, and mixtures thereof.

53. The kit for cleaning carpets or fabrics according to claim 49, wherein the metal chelating agent has a higher affinity for transition metals than for divalent calcium and magnesium ions.

54. The kit for cleaning carpets or fabrics according to claim 49, wherein the metal chelating agent comprises ethylenediamine-N,N'-disuccinic acid.

55. The kit for cleaning carpets or fabrics according to claim 49, wherein the water-soluble carbonate anion source comprises an alkali metal carbonate or an alkali metal bicarbonate.

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