Controlling a flow of filtered fluid within a pool cleaning robot

Abstract

A pool related platform (PRP) that includes a filtering unit, a fluid movement inducer configured to move fluid within a filtering path that passes through the filtering unit; and a fluid limiter that is configured to (a) allow filtered fluid from the filtering unit to reach the fluid movement inducer only through one or more openings of the fluid limiter, and (b) prevent filtered fluid from the filtering unit to reach the fluid movement inducer through one or more bypass paths.

Description

CONTROLLING A FLOW OF FILTERED FLUID WITHIN A POOL CLEANING ROBOTCROSS REFERENCE

[0001] This application claims priority from US provisional patent serial number 63 / 556,848 filing date February 22, 2024 which is incorporated herein in its entirety.

[0002] This application claims priority from US provisional patent serial number 63 / 556,854 filing date February 22, 2024 which is incorporated herein in its entirety.

[0003] This application claims priority from US provisional patent serial number 63 / 643,895 filing date May 7, 2024 which is incorporated herein in its entirety.BACKGROUND

[0004] Pool cleaning robots include a fluid inlet, a filtering unit for filtering fluid that enters through the fluid inlet, an outlet and an impeller that is rotated by a pump fluid.

[0005] When rotated at a first rotational direction, the impeller receives fluid from multiple inner paths within the pool cleaning robot, whereas at least some of multiple inner paths output fluid towards the impeller in different directions thereby reducing the effectiveness of the flow control imposed by the rotation of the impeller. When the pool cleaning robot includes additional openings, the impeller sucks fluid from these additional openings, further reducing the effectiveness of the flow control imposed by the impeller.

[0006] When rotated at a second rotational direction that is opposite to the first rotational direction, a backwash process that removes some of the dirt aggregated in the fluid unfiltered fluid may exit the pool cleaning robot.

[0007] When the pool cleaning robot cleans the pool while moving at the waterline - air can be sucked by the impeller - which may cause the pool cleaning robot to float above a desired location.

[0008] There is a growing need to provide an energy efficient method for operating a pool cleaning robot.

[0009] Pool cleaning robots are expected to clean various pool surfaces such as submerged planes, sidewall, sun ledge and stairs.

[0010] There is a growing need to provide an efficient method for cleaning these various pool surfaces.SUMMARY

[0011] There are provided one or more pool related platforms and / or one or more methods as illustrated in the application.BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to understand the invention and to see how it may be carried out in practice, a preferred embodiment will now be described, by way of non-limiting example only, with reference to the accompanying drawings, in which:

[0013] FIG. 1-4 illustrate examples of cross sectional views of one or more pool related platforms (PRPs) that are one or more pool cleaning robots;

[0014] FIG. 5-6 illustrate examples of top views of one or more PRPs that are one or more pool cleaning robots;

[0015] FIG. 7 illustrates an example of impeller enclosures and their environment;

[0016] FIG. 8 illustrates an example of a method;

[0017] FIGs. 9-11 illustrate examples of pool cleaning robots and parts of pool cleaning robots;

[0018] FIG. 12 illustrates an example of a method;

[0019] FIGs. 13-14 illustrate examples of an experimental setup;

[0020] FIGs. 15-16 illustrate examples of pool cleaning robots and parts of pool cleaning robots that include a unidirectional valve; and

[0021] FIG. 17-19 illustrate examples of top views of one or more PRPs that are one or more pool cleaning robots

[0022] It will be appreciated that for simplicity and clarity of illustration, elements shown in the figures have not necessarily been drawn to scale. For example, the dimensions of some of the elements may be exaggerated relative to other elements for clarity. Further, where considered appropriate, reference numerals may be repeated among the figures to indicate corresponding or analogous elements.DETAILED DESCRIPTION OF THE DRAWINGS

[0023] According to an embodiment there are provided one or more pool related platforms (PRPs).

[0024] According to an embodiment, any PRP is a platform that may perform an operation related to a fluid of a pool - cleaning, changing chemical composition, monitoring, and the like.

[0025] Examples of a PRP include a pool cleaning robot (PCR), a pool robot that differs from a PCR, a PCR, and the like. Any example related a PCR may be applied mutatis mutandis, to any other PRP.

[0026] According to an embodiment, the PRP is battery powered and / or powered by cable.

[0027] According to an embodiment the PRP is configured to perform at least one of the following: a. Limit a flow of fluid within the PCR to improve the efficiency of a fluid movement inducer (such as an impeller).Provides a weak fluid jet for cleaning. b. Limit a flow through an idle impeller when another impeller is active.

[0028] While the following text and figures - may refer to a PRP having only a first configuration and / or one or more first parts, or may refer to a PRP having only a second configuration and / or one or more second parts - it should be noted that according to an embodiment, the PRP may also include a combination of (i) the first configuration and / or one or more first parts and of (ii) the second configuration and / or one or more second parts. For example - a secondary inlet opening for providing fluid for the weak fluid jet may be formed in the one or more outlet fluid conduits. Yet another example - the PRP may include the unidirectional valve or the filtering unit enclosure. Nevertheless - the PRP may include both the unidirectional valve and the filtering unit enclosure.

[0029] Limiting flow of fluid to increase efficiency and power usage

[0030] According to an embodiment, there is provided a pool related platform (PRP), that includes a filtering unit; a fluid movement inducer configured to move fluid within a filtering path that passes through the filtering unit; and a fluid limiter that is configured to (a) allow filtered fluid from the filtering unit to reach the fluid movement inducer only through one or more openings of the fluid limiter, and (b) prevent filtered fluid from the filtering unit to reach the fluid movement inducer through one or more bypass paths.

[0031] According to an embodiment, the fluid movement inducer includes one or more impellers. See, for example impeller 112 of figure 1, first and second impellers 113 and 115 respectively of figure 6.

[0032] According to an embodiment, the fluid limiter includes a filtering unit enclosure (see for example filter unit enclosure 108 of figure 1 and 6) that includes one or more filtering unit enclosure openings (see for example filter unit enclosure opening 110 of figures 1 and 6) that belong to the one or more openings of the fluid limiter.

[0033] According to an embodiment, the filtering unit enclosure seals portions of the filtering unit other than (a) one or more filtering unit enclosure openings see for example filter unit enclosure opening 110 of figures 1 and 6), and (b) one or moreunfiltered fluid inlets of the filtering unit (see for example fluid inlet 104 of figures 1 and 6).

[0034] According to an embodiment, the fluid limiter includes an impeller enclosure (see for example impeller enclosure 111 of figure 1, first impeller enclosure 163 and second impeller enclosure 161 of figure 6).

[0035] According to an embodiment, the impeller enclosure is mechanically coupled to a pump motor unit enclosure (see for example pump motor enclosure 161a of figure 1 and First and second pump motor enclosure 160 of figure 7) that encloses one or more pump motors that are configured to rotate the one or more impellers.

[0036] According to an embodiment, the impeller enclosure includes an impeller enclosure opening (see for example impeller enclosure opening 112b of impeller enclosure 112a of figure 5).

[0037] According to an embodiment, the fluid movement inducer includes impellers that are enclosed in one or more impeller enclosures having one or more impeller enclosure openings (see for example first impeller enclosure 163 with first impeller enclosure opening 164 of figure 7, and second impeller enclosure 161with second impeller enclosure opening 162 of figure 7).

[0038] According to an embodiment, the one or more impeller enclosure openings face the filter unit enclosure opening.

[0039] According to an embodiment, the fluid limiter is configured to allow only filtered fluid that is received directly from the filtering unit to reach the fluid movement inducer.

[0040] According to an embodiment, the fluid limiter is configured to allow only a single flow of filtered fluid that is received from the filtering unit to reach the fluid movement inducer.

[0041] According to an embodiment, the housing includes a single fluid inlet.

[0042] According to an embodiment the PRP includes a power unit enclosure that is located outside the filtering path (See for example another chamber 108 in which battery 108a is located of figure 2).

[0043] According to an embodiment, the fluid movement inducer includes a first impeller, a second impeller and a unidirectional valve that is configured to (a) allow a passage of fluid to the first impeller when the first impeller rotates at a first direction that causes fluid to exit the PRP, and (b) prevent fluid to reach the first impeller when the first impeller is idle and the second impeller rotates at a second direction.

[0044] Figures 1-7 illustrate examples of a fluid movement inducer that include one or more impellers. Figure 1-7 illustrate examples of a fluid limiter that includes filtering unit enclosure opening 100 and one more impeller enclosures. According to an embodiment, the fluid limiter includes or is assisted by conduits that define the filtering path.

[0045] According to an embodiment, the PRP further comprising a power unit enclosure that is located outside the filtering path.

[0046] Although some of the figures illustrates two impellers - the PRP may include only a single impeller or more than two impellers.

[0047] According to an embodiment there is provided a pool cleaning robot that limits the flow of fluid to the impeller (when rotating at a first rotational direction) from a single path - that passes through an opening.

[0048] According to an embodiment the opening is a filtering unit enclosure opening formed between a filtering unit enclosure and the impeller.

[0049] The filtering unit enclosure opening may be replaced by multiple filtering unit openings - that are located at a path between the filtering unit enclosure and the impeller.

[0050] According to an embodiment, the impeller includes an enclosure that prevents the reception of fluid from directions other than the general direction of the filtering unit enclosure opening .

[0051] The flow limitation increases the effectiveness of the flow control imposed by the rotation of the impeller - as the fluid is received from a single general direction.

[0052] According to an embodiment having a PRP that includes a single bottom opening - instead of having different openings through which fluid is sucked into the PRP - increases the effectiveness of the cleaning.

[0053] According to an embodiment, the flow limitation prevents the suction of air when cleaning the waterline.

[0054] According to an embodiment, the flow limitation limits the spread of dirt when operating in a backwash mode.

[0055] According to an embodiment, the filtering unit is located within a filtering unit enclosure that has a fluid inlet and the filtering unit enclosure opening . According to an embodiment - there are no other openings in the filtering unit enclosure.

[0056] Figure 1 illustrates a cross section of a PRP that is a PCR 100.

[0057] PCR 100 includes:a. Filtering unit enclosure 108. b. Filtering unit 102 (located within filtering unit enclosure 108). c. Fluid inlet 104 for providing unfiltered fluid to the filtering unit 102. d. Filtering unit enclosure opening 110. e. Impeller enclosure 111. The impeller enclosure may include an opening that may differ from the filtering unit enclosure opening 110 - or may use the filtering unit enclosure opening 110 as its opening. f. Impeller 112 located within the impeller enclosure 111. g. Pump motor 106 configured to rotate rod 109 thereby rotating the impeller. The pump motor is located within a pump motor enclosure 161a. h. External opening 114 used for outputting filtered fluid from the PCR (when the impeller rotates in a first direction) or for receiving fluid from outside the PCR (when the impeller rotates in a second direction. i. Additional components such as controller 103, brush wheels 121 and 122, housing 101, controller 103, chamber 108a, one or more sensors (not shown), one or more additional portions of the propulsion system (not shown), and the like.

[0058] Figure 2 illustrates a cross section of a PRP that is a PCR 100a.

[0059] PCR 100a differs from PCR 100 of figure 1 by: a. Including a fluid output unit that is configured to output the fluid not directly above the impeller 112 - but from one or more rear openings such as first external opening 114a (directs the fluid upwards and rearwards) and second external opening 114b (directs the fluid downwards and rearwards). The fluid output unit also includes one or more outlet fluid conduits 181 and a selector 115a (for example a motorized selector) that is rotated to select between the first external opening 114a and the second external opening 114b. b. Illustrating battery 108b within chamber 108a.

[0060] Figure 3 illustrates a cross section of a PRP that is a PCR 100b.

[0061] PCR 100b differs from PCR 100 of figure 1 by: a. Illustrating battery 108b within the chamber 108a. b. Illustrating a filtering path 99 that starts from the fluid inlet 104, proceeds to the filtering unit 102 that outputs filtered fluid through thefiltering unit enclosure 108, the filter unit enclosure opening 110, impeller 112 and through the external opening 114.

[0062] Figure 4 illustrates a cross section of a PRP that is a PCR 102.

[0063] PCR 102 differs from PCR 100 of figure 1 by: a. Having chamber 108a between the filtering unit 102 and the rear end of the PCR - instead between the filtering unit 102 and the front end of the PCR. b. Different shapes of the filtering unit 102 and the filtering unit enclosure 108.

[0064] Figure 5 illustrates a top view of a PRP that is a PCR 100c.

[0065] PCR 100c includes: a. Filtering unit enclosure 108. b. Filtering unit 102 (located within filtering unit enclosure 108). c. Fluid inlet 104 for providing unfiltered fluid to the filtering unit 102. d. Filtering unit enclosure opening 110. e. Impeller enclosure 112a that includes impeller enclosure opening 1 lb that faces the filtering unit enclosure opening 110. f. Impeller 112 located within the impeller enclosure 111. g. Pump motor (not shown), rod (not shown), pump motor enclosure (not shown), external opening (not shown), additional components such as controller (not shown), brush wheels (not shown), housing 101, controller (not shown), one or more sensors (not shown), one or more additional portions of the propulsion system (not shown), and the like.

[0066] Figure 6 illustrates a top view of a PRP that is a PCR lOOd.

[0067] PCR lOOd includes: a. Filtering unit enclosure 108. b. Filtering unit 102 (located within filtering unit enclosure 108). c. Fluid inlet 104 for providing unfiltered fluid to the filtering unit 102. d. Filtering unit enclosure opening 110. e. First impeller enclosure 163 that includes first impeller enclosure opening 164 that faces the filtering unit enclosure opening 110. f. Second impeller enclosure 161 that includes second impeller enclosure opening 162 that faces the filtering unit enclosure opening 110.g. First impeller 113 located within the first impeller enclosure 163. h. Second impeller 115 located within the second impeller enclosure 161. i. Pump motor (not shown), rod (not shown), pump motor enclosure (not shown), external opening (not shown), additional components such as controller (not shown), brush wheels (not shown), housing 101, controller (not shown), one or more sensors (not shown), one or more additional portions of the propulsion system (not shown), and the like.

[0068] Figure 7 illustrates various parts of the pool cleaning robot - including a first and second pump motor enclosure 160 (that surrounds first and second pump motors - not shown), a first impeller enclosure 163 with first impeller enclosure opening 164 facing the filtering unit enclosure opening 110, first impeller 113, a second impeller enclosure 161 with a second impeller enclosure opening 162 facing the filtering unit enclosure opening, second impeller 115, and filtering unit enclosure opening 110.

[0069] Figure 8 illustrates method 400 for operating a PRP.

[0070] According to an embodiment, method 400 includes step 410 of moving, by a fluid movement inducer, fluid within a filtering path of the PRP, the filtering path passes through a filtering unit of the PRP.

[0071] According to an embodiment, method 400 also includes step 420 of allowing, by a fluid limiter, filtered fluid from the filtering unit to reach the fluid movement inducer only through one or more openings of the fluid limiter, while preventing, by the fluid limiter, from reaching the fluid movement inducer through one or more bypass paths.

[0072] Step 420 may be executed during the execution of step 410.

[0073] According to an embodiment, method 400 includes operating any PRP illustrated in the specification and / or figures.

[0074] Weak fluid jet used for cleaning

[0075] According to an embodiment, the PCR is configured to output a weak fluid jet assists in cleaning dirt. The weak fluid jet is weak in the sense that the outputting of the jet does not move the PCR - or substantially does not move the PCR. The weak fluid jet is a bottom jet nozzle with no influence on the PCR position or orientation. For example - weak fluid jet does not change that center of gravity of the PCR by more than 1-5 millimeters. For example - the weak fluid jet does change the propagation, position and orientation the PCR.

[0076] According to an embodiment, the weak fluid jet is a result from having a weak fluid stream pass through a secondary fluid path that includes: a. A secondary inlet opening (denoted 21 in figure 9) in fluid communication with a primary fluid conduit (such as a primary fluid conduit - denoted 33 in figure 9 - that is located between an impeller (denoted 32 in figure 9) and a primary fluid outlet of the PCR). The secondary inlet opening (denoted 21 in figure 9) may be formed in the primary fluid conduit. b. A secondary fluid conduit (denoted 22 in figure 9). c. A secondary fluid outlet. According to an embodiment the secondary fluid outlet is formed at the bottom (denoted 35 in figure 9) of the PCR or is formed below the bottom of the PCR (see final part of the secondary fluid outlet - denoted 25 in figure 11).

[0077] The secondary fluid conduit may reach the secondary fluid outlet or may be otherwise in fluid communication with the secondary fluid outlet.

[0078] The secondary fluid conduit may include a first part (denoted 24 in figure 111) that extends from the primary fluid conduit.

[0079] According to an embodiment, most (for example - above 70, 75, 80, 85, 90, 95 percent) of the fluid that passes through the primary fluid conduit reaches the primary fluid outlet - and only a small portion of the fluid that passes through the primary fluid conduit enters the secondary fluid path.

[0080] According to an embodiment, the distribution of the fluid between the secondary fluid path and the primary fluid outlet is dictated based on the relative sizes of the secondary fluid opening and the primary fluid outlet (or any other flow controlling dimension of feature of the primary fluid outlet).

[0081] According to an embodiment, the distribution is made by any other flow control element - such as a value, and the like.

[0082] According to an embodiment, during a pool cleaning process, the weak fluid jet is ejected downwards, and lifts dirt that can be sucked by the PCR (through filtering unit enclosure opening denoted 36 in figure 3. The filtering unit is denoted 34 in figure 9).

[0083] Figures 9-11 illustrate an example of a secondary fluid conduit that starts by a curve and then turns down - but the secondary fluid conduit may be of different shapes and / or sizes. While in some figures the secondary fluid conduit does not exceed the bottom of the PCR - in another figure the secondary fluid conduit extends below the bottom of the PCR. Yet for another example - in a further figure thesecondary fluid outlet is parallel to the bottom of the PCR, while in yet another figure the secondary fluid outlet is oriented to the bottom of the PCR. Any orientation angle may be provided - for example between plus to minus ninety degrees may be provided.

[0084] Figure 12 illustrates an example of method 800.

[0085] According to an embodiment method 800 includes using the PRP illustrated above and in figures 9-11.

[0086] According to an embodiment, method 800 includes: a. Step 710 of receiving fluid by a secondary inlet opening that is in fluid communication with a primary fluid conduit. b. Step 720 of outputting, from a secondary fluid opening located at a bottom of the PRP, a weak fluid jet for use in cleaning the pool.

[0087] According to an embodiment the fluid is provided, via a secondary fluid path to the secondary fluid opening.

[0088] Impeller related flow control using a valve

[0089] Although some of the figures illustrates two impellers - the PCR may include only a single impeller or more than two impellers.

[0090] According to an embodiment there is provided a PCP - for example a PCR that includes a first impeller and a second impeller.

[0091] The first impeller is associated with a unidirectional valve (denoted 191 in figures 13-14) that allows passage of fluid when the first impeller rotates at a first direction that causes fluid to exit the pool cleaning robot. The unidirectional valve 191 includes a closing element 192 and a hinge 193, the closing element rotates about the hinge.

[0092] According to an embodiment, when the first impeller is idle and the second impeller rotates at a second direction to such fluid into the pool cleaning robot the unidirectional valve prevents the passage of fluid through the first impeller - thereby increasing the suction efficiency of the second impeller. This may improve the suction of fluid from a bottom opening of the pool cleaning robot.

[0093] According to an embodiment, the unidirectional valve is also closed in one or more other situations - for example when the second impeller is idle.

[0094] According to an embodiment - the default state of the unidirectional valve is closed- and only a flow of fluid from the impeller to the exterior of the pool cleaning robot opens the unidirectional valve.

[0095] According to an embodiment, the unidirectional valve includes a base for supporting a hinge (denoted 193 in figure 13) that rotatably couples a closing element to the base. The base may be elastic, non-elastic, and the like.

[0096] Figures 13-19 illustrate at least the impellers, the unidirectional valve and its parts - the base, the hinge and the covering elements - in a closer position or in an open position.

[0097] Figure 17 illustrates atop view of a PRP that is a PCR 103a while the closing element is at a closed position.

[0098] PCR 103a includes: a. Filtering unit 102. b. Fluid inlet 104 for providing unfdtered fluid to the filtering unit 102. c. Filtering unit enclosure opening 110. d. First impeller enclosure, second impeller enclosure, first impeller 201, second impeller 202. e. Unidirectional valve 191 that includes closing element 192 that selectively closes or even seals an external opening located above the first impeller. f. A fluid output unit that includes fluid conduits 210 and fluid outlet 211. g. Pump motor (not shown), rod (not shown), pump motor enclosure (not shown), external opening (not shown), additional components such as controller (not shown), brush wheels (not shown), housing 101, controller (not shown), one or more sensors (not shown), one or more additional portions of the propulsion system (not shown), and the like.

[0099] Figure 18 illustrates atop view of a PRP that is a PCR 103b where the closing element is at a closing position.

[0100] PCR 103b of figure 18 differs from PCR 108A of figure 17 by further including filtering unit enclosure 108.

[0101] Figure 19 illustrates a top view of a PRP that is a PCR 103b where the closing element is at an open position.

[0102] Any reference to the term “comprising” or “having” should be interpreted also as referring to “consisting” of “essentially consisting of’. For example - a pool cleaning robot that comprises certain components can include additional components, can be limited to the certain components or may includeadditional components that do not materially affect the basic and novel characteristics of the pool cleaning robot - respectively.

[0103] In the foregoing specification, the invention has been described with reference to specific examples of embodiments of the invention. It will, however, be evident that various modifications and changes may be made therein without departing from the broader spirit and scope of the invention as set forth in the appended claims.

[0104] Moreover, the terms "front, " "back, " "top, " "bottom, " "over, " "under " and the like in the description and in the claims, if any, are used for descriptive purposes and not necessarily for describing permanent relative positions. It is understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the invention described herein are, for example, capable of operation in other orientations than those illustrated or otherwise described herein.

[0105] Those skilled in the art will recognize that the boundaries between logic blocks are merely illustrative and that alternative embodiments may merge logic blocks or circuit elements or impose an alternate decomposition of functionality upon various logic blocks or circuit elements. Thus, it is to be understood that the architectures depicted herein are merely exemplary, and that in fact many other architectures can be implemented which achieve the same functionality.

[0106] Any arrangement of components to achieve the same functionality is effectively "associated" such that the desired functionality is achieved. Hence, any two components herein combined to achieve a particular functionality can be seen as "associated with " each other such that the desired functionality is achieved, irrespective of architectures or intermedial components. Likewise, any two components so associated can also be viewed as being "operably connected, " or "operably coupled, " to each other to achieve the desired functionality.

[0107] Furthermore, those skilled in the art will recognize that boundaries between the above described operations merely illustrative. The multiple operations may be combined into a single operation, a single operation may be distributed in additional operations and operations may be executed at least partially overlapping in time. Moreover, alternative embodiments may include multiple instances of a particular operation, and the order of operations may be altered in various other embodiments.

[0108] While certain features of the invention have been illustrated and described herein, many modifications, substitutions, changes, and equivalents will now occur to those of ordinary skill in the art. It is, therefore, to be understood that the appended claims are intended to cover all such modifications and changes as fall within the true spirit of the invention.

Claims

WE CLAIM1. A pool related platform (PRP), comprising: a filtering unit; a fluid movement inducer configured to move fluid within a filtering path that passes through the filtering unit; and a fluid limiter that is configured to (a) allow filtered fluid from the filtering unit to reach the fluid movement inducer only through one or more openings of the fluid limiter, and (b) prevent filtered fluid from the filtering unit to reach the fluid movement inducer through one or more bypass paths.

2. The PRP according to claim 1, wherein the fluid movement inducer comprises one or more impellers.

3. The PRP according to claim 2, wherein the fluid limiter comprises a filtering unit enclosure that comprises one or more filtering unit enclosure openings of the one or more openings of the fluid limiter.

4. The PRP according to claim 3, wherein the filtering unit enclosure seals portions of the filtering unit other than (a) one or more filtering unit enclosure openings, and (b) one or more unfiltered fluid inlets of the filtering unit.

5. The PRP according to claim 2 wherein the fluid limiter comprises an impeller enclosure.

6. The PRP according to claim 5, wherein the impeller enclosure is mechanically coupled to a pump motor unit enclosure that encloses one or more pump motors that are configured to rotate the one or more impellers.

7. The PRP according to claim 5, wherein the impeller enclosure comprises an impeller enclosure opening.

8. The PRP according to claim 1, wherein the fluid movement inducer comprises impellers that are enclosed in one or more impeller enclosures having one or more impeller enclosure openings.

9. The PRP according to claim 8, wherein the one or more impeller enclosure openings face the10. The PRP according to claim 1, wherein the fluid limiter is configured to allow only filtered fluid that is received directly from the filtering unit to reach the fluid movement inducer.

11. The PRP according to claim 1, wherein the fluid limiter is configured to allow only a single flow of filtered fluid that is received from the filtering unit to reach the fluid movement inducer.

12. The PRP according to claim 1, wherein the housing comprises a single fluid inlet.

13. The PRP according to claim 1, further comprising a power unit enclosure that is located outside the filtering path.

14. The PRP according to claim 1, wherein the fluid movement inducer comprises a first impeller, a second impeller and an unidirectional valve that is configured to (a) allow a passage of fluid to the first impeller when the first impeller rotates at a first direction that causes fluid to exit the PRP, and (b) prevent fluid to reach the first impeller when the first impeller is idle and the second impeller rotates at a second direction.

15. A method for operating a pool related platform (PRP), the method comprises: moving, by a fluid movement inducer, fluid within a filtering path of the PRP, the filtering path passes through a filtering unit of the PRP; and allowing, by a fluid limiter, filtered fluid from the filtering unit to reach the fluid movement inducer only through one or more openings of the fluid limiter, while preventing, by the fluid limiter, from reaching the fluid movement inducer through one or more bypass paths.

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