EP3870855B1 - Pompe peristaltique etanche pour appareil electromenager - Google Patents

Pompe peristaltique etanche pour appareil electromenager Download PDF

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Publication number
EP3870855B1
EP3870855B1 EP19789966.9A EP19789966A EP3870855B1 EP 3870855 B1 EP3870855 B1 EP 3870855B1 EP 19789966 A EP19789966 A EP 19789966A EP 3870855 B1 EP3870855 B1 EP 3870855B1
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EP
European Patent Office
Prior art keywords
liquid
pump
peristaltic pump
sealing element
pump body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Application number
EP19789966.9A
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German (de)
English (en)
French (fr)
Other versions
EP3870855A1 (fr
Inventor
Mathias GANEM
Régis FEREYRE
Johan Sabattier
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SEB SA
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SEB SA
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Filing date
Publication date
Application filed by SEB SA filed Critical SEB SA
Priority to EP23185139.5A priority Critical patent/EP4249750A3/fr
Publication of EP3870855A1 publication Critical patent/EP3870855A1/fr
Application granted granted Critical
Publication of EP3870855B1 publication Critical patent/EP3870855B1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/08—Machines, pumps, or pumping installations having flexible working members having tubular flexible members
    • F04B43/09—Pumps having electric drive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/12—Machines, pumps, or pumping installations having flexible working members having peristaltic action
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/12—Machines, pumps, or pumping installations having flexible working members having peristaltic action
    • F04B43/1253—Machines, pumps, or pumping installations having flexible working members having peristaltic action by using two or more rollers as squeezing elements, the rollers moving on an arc of a circle during squeezing
    • F04B43/1261—Machines, pumps, or pumping installations having flexible working members having peristaltic action by using two or more rollers as squeezing elements, the rollers moving on an arc of a circle during squeezing the rollers being placed at the outside of the tubular flexible member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/12—Machines, pumps, or pumping installations having flexible working members having peristaltic action
    • F04B43/1253—Machines, pumps, or pumping installations having flexible working members having peristaltic action by using two or more rollers as squeezing elements, the rollers moving on an arc of a circle during squeezing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/08—Machines, pumps, or pumping installations having flexible working members having tubular flexible members

Definitions

  • the present invention relates to the field of peristaltic pumps used in household appliances and preferably in hairdressing appliances.
  • the invention also relates to household appliances, and in particular to hairdressing appliances, containing peristaltic pumps.
  • the invention relates to a peristaltic pump for a household appliance comprising a pump body defining a chamber in which there is a deformable pipe intended to contain a liquid to be moved.
  • the invention also relates to a household appliance, and preferably a hairdressing appliance, comprising a peristaltic pump as defined above.
  • Peristaltic pumps are known in industrial fields, for example from documents CN203614372U Or US3421447 .
  • the transported fluid is not in contact with any moving part, since it remains contained inside the deformable pipe of the peristaltic pump, pipe which is regularly compressed by one or more rollers mounted on the rotor of the peristaltic pump, which has the effect of setting the fluid in motion.
  • the fluid transport circuit is simplified, or even reduced to simply a pipe, that of the peristaltic pump.
  • these devices are generally electrical devices, at least insofar as they comprise a heating element for electrically heating a surface for shaping the hair, or even various electrical and electronic components. Consequently, the presence of liquid inside these devices risks destroying their electrical and/or electronic components and therefore causing a malfunction or even the total breakdown of the hairdressing device. In addition, the risk of electrocution for the user cannot then be totally excluded, especially since he generally holds his devices in his hand, or even handles them in the immediate vicinity of his head, in the case hairdressing appliances.
  • the present invention aims to overcome the aforementioned drawbacks.
  • An object of the invention is to provide a peristaltic pump which is particularly safe, in particular in the event of its hose breaking.
  • Another object of the invention is to provide a peristaltic pump which is particularly compact.
  • Another object of the invention is to provide a reliable and robust peristaltic pump.
  • An object of the invention is to provide a hairdressing appliance which is particularly safe, in particular in the event of the hose of the peristaltic pump breaking.
  • Another object of the invention is to provide a hairdressing device which is particularly compact and ergonomic.
  • Another object of the invention is to provide a hairdressing device which is particularly reliable and robust.
  • rupture of the deformable pipe is meant any deterioration which could lead to a loss of tightness of said pipe, that is to say to a leak of the liquid contained in the deformable pipe. For example, this can be the result of a hose burst, a crack in the hose, a hole in the hose, excessive porosity in the hose, or an accidental unplugging or disconnection of the hose. pipe, for example as a result of overpressure due to scaling of the device.
  • chamber is meant any space in three dimensions intended to accommodate at least one element, in this case the deformable pipe of the pump.
  • the liquid is contained, that is to say maintained, preserved, in the chamber of the pump and does not spread outside the pump in the event of the deformable pipe breaking. Therefore, a possible rupture of the hose of the peristaltic pump has limited consequences since the liquid remains contained inside the pump and does not spread outside the pump, as it would normally be the case for pumps known from the prior art. It is therefore possible to install a pump as defined by the invention in spaces where any presence of liquid is normally to be avoided, for example in the immediate vicinity of electrical or electronic components as will be detailed later.
  • the chamber comprises a rotor in contact with the deformable pipe, said rotor is connected to a drive shaft passing through the pump body, and the sealing device comprises a first sealing element which is arranged between the drive shaft and the pump body. Consequently, the liquid, in the event of the rupture of the deformable pipe, cannot escape through the zone located between the drive shaft, which is a rotating part, and the pump body, which is a part fixed.
  • the first sealing element comprises a lip seal(s), and preferably a two-lip seal.
  • This type of seal and in particular the double lip seal, makes it possible to ensure very good sealing between a rotating shaft, in this case the drive shaft, against which the seal lip(s) rests, and a fixed part, in this case the pump body, in which the seal is held.
  • the peristaltic pump comprises a cover cooperating with the pump body, and the sealing device comprises a second sealing element placed between the pump body and the cover.
  • the second sealing element comprises a seal of circular cross-section arranged at least partially on the periphery of the pump body and of the cover.
  • the drive shaft passes through the cover and that the first sealing element is located between the drive shaft and the cover.
  • the peristaltic pump includes an inlet connector for receiving a suction line from liquid, and an outlet connector intended to receive a liquid discharge pipe, connected to the deformable pipe.
  • the sealing device preferably comprises a third sealing element arranged between the pump body and at least one of the input or output connectors. Alternatively, the third sealing element is placed between the cover and at least one of the input or output connectors. Alternatively, the third sealing element is placed between the pump body, the cover, and at least one of the input or output connectors.
  • the pump can be positioned with at least one of its connectors, or even both, arranged at the bottom, and, even in the event of the breakage of the deformable pipe, there will be no leakage of liquid at the level of the connectors. that is to say between the connectors and the pump body or the cover for example.
  • the third sealing element comprises a plate, preferably made of silicone, through which each of said input and output connectors passes. Said plate is then arranged between the pump body and/or the cover of the pump and around at least one of the input or output connectors.
  • the plate comprises two orifices, and preferably two holes, each of the orifices accommodating one of the connectors.
  • this solution makes it possible to be able to dismantle the connectors without any damage either to the connectors or to the pump itself.
  • the use of a silicone plate is particularly advantageous and inexpensive in the case where the two connectors are located close to each other and on the same plane forming a surface of the pump as will be detailed in following.
  • the third sealing element is arranged between the pump body and/or optionally the cover and each of the inlet and outlet connectors, said third sealing element comprising two O-rings.
  • each connector has its own O-ring placed between the connector and the pump body and/or the cover so as to seal the chamber at the level of the connectors.
  • the input and output connectors are arranged in the same plane belonging to one and the same external face of the peristaltic pump. This makes it possible to have a particularly compact pump, the connectors of which are gathered on the same face, thus limiting the length of the conduits necessary at the start and the arrival of the pump.
  • the input and output connectors each comprise an elbow advantageously of substantially 90°.
  • Such connectors make it possible to facilitate the integration of the pump by arranging the latter transversely to the suction and discharge ducts, respectively at the inlet and at the outlet of the pump. It is thus possible to limit the bulk of the pump and liquid conduit assembly.
  • the embodiments described above are perfectly compatible with one another, and other advantageous embodiments may result from their various combinations. It is possible in particular to envisage a peristaltic pump which would result from the combination of the three embodiments previously described. This would then result in a particularly compact peristaltic pump, easy to manufacture and maintain since it is equipped with a cover, inexpensive and totally sealed, whatever its orientation in space, in the event of its deformable pipe breaking.
  • the sealing device would then comprise said first, second and third sealing elements described above.
  • the peristaltic pump for a household appliance comprises a pump body defining a chamber in which there is a deformable pipe intended to contain a liquid to be moved, as well a liquid draining device designed to, in the event of rupture of the deformable pipe of the peristaltic pump, drain the liquid from the chamber to the outside of the peristaltic pump according to a controlled trajectory.
  • the liquid emptying device comprises at least one hole which makes it possible to control the flow path of the liquid in a very economical and safe manner.
  • controlled trajectory is meant that the place through which the liquid will drain, that is to say flow, is defined in advance, chosen by the designers. In other words, we know precisely where and how the liquid will drain.
  • the diameter of the hole is between 0.5 mm and 4 mm, preferably between 1 mm and 1.5 mm.
  • the liquid emptying device comprises two holes, advantageously arranged close to each other, for example separated by a distance of between 1 mm and 5 mm, which makes it possible to increase the flow rate and therefore the speed drain.
  • the presence of a plurality of holes also makes it possible to guarantee emptying of the pump even if one of the holes were to be blocked.
  • the total evacuation cross-section is thus between 2 mm 2 and 2.5 mm 2 , in order to ensure a sufficient drainage rate.
  • the emptying device is arranged through the pump body or through the cover of the pump or through the pump body and the cover.
  • the emptying device can be constituted by any device passing through the pump body, or the cover or the pump body and the cover, that is to say any device capable to connect the chamber and the outside of the pump in a place defined in advance by design, that is to say defined by the designer.
  • the objective is not necessarily to keep the liquid inside the chamber but rather to control its trajectory, that is to say to control its evacuation, having chosen and defined in advance, by design, the precise place where the liquid will have to flow. Thanks to this remarkable embodiment, it is then possible to provide, during the integration of the pump in its environment, an additional device, communicating with said emptying device, for example to collect and store the liquid (by means of a tank for example) or even drain and evacuate the liquid (for example by means of a pipe or a hole as will be detailed later).
  • this embodiment is compatible, even advantageously complementary to the embodiments previously described.
  • the combination of this emptying device and the sealing device makes it possible, quite remarkably, to perfectly secure the operation of the peristaltic pumps and to meet the most stringent standards.
  • two devices then combine to, on the one hand, prevent liquid from leaking out in an uncontrolled manner from the pump, and on the other hand, to control the flow of the liquid, its trajectory.
  • the liquid will always flow through the drain device, i.e. the liquid will be evacuated safely to a precise and defined location. advance during the design.
  • such a construction has a very particular advantage when the pump is connected to a reservoir of relatively large capacity, at least with respect to the quantity of liquid that the deformable pipe of the pump can contain.
  • the draining device prevents water from accumulating in the pump chamber, and therefore the pressure to increase within the chamber.
  • the controlled evacuation of the liquid also makes it possible to drain, according to a controlled trajectory, all of the liquid from the fluid circuit and therefore to put the system as quickly as possible in the safest possible state, that is to say free of of liquid.
  • such a construction with the combination of the sealing device and the emptying device makes it possible to guarantee the safety of the pump if one of the devices were to fail.
  • the sealing device were to fail, for example due to excessive wear, the liquid accidentally present in the chamber would flow along a path controlled by the drain device, i.e. at a specific location known in advance.
  • the emptying device were faulty, for example obstructed, then the liquid accidentally present in the chamber would remain contained in a sealed manner inside the latter.
  • this construction has a double safety device: sealing device and emptying device.
  • the invention also relates to a household appliance comprising a peristaltic pump according to any one of the preceding embodiments.
  • said household appliance forms a hairdressing appliance, in particular an appliance for shaping the hair, such as for example a straightener or a curler.
  • the device comprises a first arm and a second arm articulated together by a hinge so as to form a hair-shaping clip.
  • the device then forms a hair straightener which allows great ease of use and an optimal hairdressing result.
  • the first arm comprises a reservoir and a first contact hair treatment surface, the liquid discharge device being located between the reservoir and the first treatment surface.
  • the arrangement of the evacuation device between the reservoir and the first treatment surface make it possible to preserve the latter from being in contact with the liquid which could accidentally be found inside the arm, which prevents the liquid from coming into contact with the hair.
  • the first treatment surface is a surface heated by an electric heating element (PTC for example).
  • the liquid evacuation device is located at a distance of between 10 mm and 50 mm from the edge of the first treatment surface, preferably between 20 mm and 30 mm. This makes it possible in particular to preserve a safety distance with respect to the first treatment surface and in particular with respect to its electric heating element.
  • said apparatus comprises an electric motor, a tank intended to contain a liquid to be moved towards a liquid consumption device, the input connector is connected to the tank, the output connector is connected to the liquid consumption device, the the drive shaft is connected to a motor shaft of the electric motor and the peristaltic pump is arranged between the reservoir and the liquid consumption device.
  • said device advantageously comprises a box comprising the peristaltic pump and at least one electrical or electronic component, the box comprising a liquid draining device designed to evacuate, outside the case, the liquid.
  • Said evacuation device is then arranged so that the liquid cannot come into contact with the electrical or electronic component, and said emptying device communicates with the evacuation device.
  • the liquid in the event of the unexpected or accidental presence of liquid inside the pump, the liquid is quickly evacuated according to a trajectory controlled in advance by the designers and at a place precise, thus avoiding any accidental contact between the liquid and any electrical or electronic component. More specifically, the liquid is first evacuated from the pump at a specific location defined in advance using the liquid drain device, then evacuated from the device thanks to the evacuation device, the latter communicating with the device. pump drain.
  • the emptying and evacuation devices communicate with each other by any sealed means.
  • the draining device of the pump can be connected to the evacuation device of the device by means of a pipe or else the emptying device and the evacuation device can be attached to one another. another, for example one being above the other.
  • the liquid evacuation device comprises at least one orifice, and preferably two orifices, passing through the housing.
  • the orifice can have any shape.
  • said orifice is preferably a hole whose diameter is between 0.5 mm and 4 mm, preferably between 1 mm and 1.5 mm.
  • the evacuation section is advantageously between 1 mm 2 and 4 mm 2 and preferably between 2 mm 2 and 2.5 mm 2 .
  • the liquid discharge device is open from permanently with the environment, in this case, the atmosphere.
  • the liquid discharge device has no plug or any other obstruction or sealing element.
  • the liquid drain device is arranged through the pump body.
  • the peristaltic pump comprises a cover mounted on the pump body and the liquid drain device can be arranged through the cover.
  • the emptying device can be any device passing through the pump body, the cover or the pump body and the cover, i.e. any device capable of connect the chamber and the outside of the pump in a place defined in advance by design.
  • the liquid drain device comprises at least one hole, said at least one orifice, and at least one hole, being arranged facing each other, that is to say one opposite the other.
  • This arrangement makes it possible to have a particularly compact and inexpensive device insofar as the distance between the emptying and evacuation devices is minimized.
  • a sealing element preferably an O-ring, is arranged between said emptying and evacuation device, which makes it possible to guarantee the seal between the pump and the housing of the device, thus avoiding any risk of contact. between the liquid and the electrical component(s) of the device.
  • the liquid which could be inside the chamber of the pump in the event of the breakage of the deformable pipe is directly evacuated outside the casing containing the pump, and this in a manner considered and controlled, in particular by having defined during the design the precise place where the liquid was to be evacuated.
  • the fact of evacuating the liquid outside the device will make it possible to alert the user, at least visually, that a malfunction has occurred inside his device. hairstyle (in the occurrence that the deformable pipe has ruptured for example).
  • the household appliance 1 as defined by the invention is a hairdressing appliance and more specifically a hair straightener fitted with a liquid consumption device 4.
  • the liquid consumption device 4 comprises a means of vaporization 41, in this case a vaporization chamber, and a means 42 for diffusing the vapor thus produced, in the direction of a lock of hair.
  • the diffusion means 42 may in particular be formed by a series of orifices, as illustrated, or even by a slot or a diffusion groove. Such elements are well known to those skilled in the art, and are for example detailed in the patent EP 2 449 909 of the plaintiff.
  • the household appliance 1 comprises a first arm 11 and a second arm 12 interconnected by a hinge 13 arranged substantially at the end of each of said first arm 11 and second arm 12.
  • the arms are movable relative to each other. to the other according to a rotational movement and more precisely a gripper movement.
  • the first arm 11 comprises a first surface 112 for treatment of the hair by contact, in this case a heating plate.
  • the second arm 12 includes a second contact hair treatment surface 122, which can be seen on the figure 2 , complementary to the first treatment surface 112.
  • the second contact treatment surface 122 is also heated.
  • the hinge 13 allows the user to open the hair straightener to introduce a lock of hair between the treatment surfaces 112, 122, then to close the clip on the lock of hair to perform shaping, usually smoothing.
  • the household appliance 1 also comprises a liquid storage device, in this case a reservoir 3.
  • a liquid storage device in this case a reservoir 3.
  • the reservoir is intended to store water.
  • the reservoir can also store a cosmetic product, optionally diluted in water.
  • the reservoir is integrated into the first arm 11. But it is perfectly possible, and this without departing from the scope of the invention, for the reservoir to be separate from the first arm 11 and from the second arm 12.
  • the reservoir can indeed be at a distance from the first arm 11, and second arm 12, and be for example in a remote base (that is to say located at a distance from the clamp) connected to one of the arms by a cord capable of transporting the liquid.
  • a remote base that is to say located at a distance from the clamp
  • the household appliance 1 comprises a box 111 formed by the first bottom 11.
  • the box is not illustrated, it is perfectly possible, without departing from the scope of the invention, for the box to be formed by the remote base previously mentioned.
  • the box 111 thus forms an envelope, for example made of plastic material, containing at least one electrical or electronic component, such as for example a heating element (PTC for example), an electric motor 5, a temperature sensor, a capacitor, a electronic card, etc.
  • PTC heating element
  • these elements are very sensitive to any contact with a liquid, and in particular water, such contact being able to cause their damage, or even their destruction and even create a risk of electrocution.
  • the household appliance 1 comprises a liquid transport device, in this case a peristaltic pump 6.
  • a liquid transport device in this case a peristaltic pump 6.
  • the peristaltic pump 6 is integrated in the first arm as can be seen on the figure 5 , but it is also possible, without departing from the scope of the invention, for the peristaltic pump 6 to be integrated into the remote base mentioned above.
  • the peristaltic pump 6 comprises in particular a pump body 60.
  • An inlet connector 61 is arranged on the pump body 60 in order to connect the peristaltic pump 6 to a suction conduit 32, itself connected to the tank 3.
  • An outlet connector 62 is arranged on the pump body 60 in order to connect the peristaltic pump to the liquid consumption device 4, via a discharge duct 33. More specifically, each of the inlet connectors 61 and outlet 62 pass through the pump body 60.
  • a part of each of the input 61, and output 62 connectors protrude outside the pump and a part of each of the input 61, and output 62 connectors protrude inside the pump, i.e. i.e.
  • each of the input 61 and output 62 connectors comprises an elbow, preferably oriented at 90°.
  • the elbow is outside the peristaltic pump 6, in contact with the pump body 60.
  • the elbow is rigid, like the connectors, which ensures good resistance and avoids the phenomenon of untimely bending.
  • the input 61 and output 62 connectors can then be positioned on the same face of the pump body 60, even if said face is of restricted size.
  • the input 61 and output 62 connectors can be positioned next to each other, as shown, or even be in contact with each other, which makes it possible to limit the size of the peristaltic pump 6 and to simplify the routing of the suction 32 and discharge 33 ducts.
  • the inlet 61 and outlet 62 connectors can, thanks to their 90° elbow, be oriented in diametrically opposite directions , while being next to each other, which makes it possible to have a particularly simple and space-saving external liquid circuit to the pump.
  • the suction duct 32 and the discharge duct 33 are found practically aligned relative to each other, that is to say in the same plane and practically along the same straight line.
  • each of these ducts enters and leaves the peristaltic pump 6 by the same face of the pump, that is to say by one and the same side. It is thus possible to position the peristaltic pump 6 in a particularly cramped and difficult to access location since it is sufficient for only one face of the pump to be accessible to connect the suction 32 and discharge 33 ducts to it.
  • the pump also includes a cover 64 cooperating with the pump body 60. More specifically, the cover 64 is mounted on the pump body 60, which makes it possible to have an easy-to-assemble pump. In particular, the assembly of the various internal components such as the components of a rotor 65 for example is facilitated.
  • the peristaltic pump 6 can be dismantled and reassembled at will, without any deterioration, for example to intervene on the internal components.
  • the peristaltic pump 6 is also connected to an electric motor 5 intended to set in motion the various moving parts of the peristaltic pump 6 and therefore to move the liquid from the reservoir 3 towards the liquid consumption device 4.
  • the pump body 60 forms a chamber 68, that is to say a space, a recess or a housing in which there are various elements.
  • the chamber 68 is defined by the pump body 60 and is closed by the cover 64.
  • the chamber thus contains a deformable pipe 63, a rotor 65 comprising one or more pressing elements 651 connected to the rotor by a support 653 and one or more springs 652.
  • the deformable pipe 63 is fixed and is connected on the one hand to the inlet connector 61 and on the other hand to the outlet connector 62 so as to form a loop.
  • the rotor 65 is located in the center of the loop and is driven in rotation by a drive shaft 51 passing through the pump body 60 and connected to the motor shaft of the electric motor 5.
  • the rotor is guided in rotation by a bearing 645 housed in the lid.
  • the pressing elements 651 such as rollers for example, then come to punctually crush the deformable pipe 63, and under the effect of their displacement following the rotation of the rotor 65, this creates a suction phenomenon but also a displacement of the liquid which is inside the deformable pipe 63.
  • This operation is entirely conventional and characteristic of peristaltic pumps known to those skilled in the art so that it is not further detailed here.
  • the peristaltic pump 6 and the electric motor are both connected to a fixing plate 52 for example by means of screws 53.
  • the peristaltic pump 6 comprises a sealing device 661, 662, 663.
  • the latter constitutes a safety device forming an integral part of the pump described in detail below.
  • the sealing device of the peristaltic pump 6 comprises a first sealing element 661 disposed between the drive shaft 51 and the pump body 60 (or, alternatively the cover 64). More precisely, the first sealing element 661 is a lip seal and preferably a two-lip seal. Such a seal is in fact very effective in ensuring perfect sealing against any liquid between a rotating part, in this case the drive shaft 51, and a fixed part, in this case the pump body 60 ( or possibly the lid 64).
  • the first sealing element 661 guarantees both the correct rotation of the drive shaft 51 relative to the pump body 60 (or possibly to the cover) while guaranteeing the seal between these two parts.
  • the peristaltic pump 6 also comprises a second sealing element 662 disposed between the pump body 60 and the cover 64, as can be seen in the figure 7 .
  • This second sealing element 662 is advantageously formed by a seal of circular section.
  • the second sealing element 662 is then arranged around the chamber 68, close to the edge, that is to say the periphery of the pump body 60 and of the cover.
  • the second sealing element 662 follows the contour of the pump body 60 and of the cover 64, and therefore resumes its shape.
  • the second sealing element 662 almost forms a loop on itself, however the latter has two edges, ie it is not closed on itself.
  • the second sealing element 662 substantially takes the shape of a horseshoe or even of the capital Greek letter Omega.
  • the presence of this second sealing element 662 thus makes it possible to ensure sealing between the pump body 60 and the cover 64, while allowing disassembly and reassembly of the cover 64.
  • this second element of sealing 662 does not go all the way around the pump body 60.
  • the second sealing element is not located on the entire periphery of the chamber 68 but on at least 60% and preferably 80% of the periphery of the chamber 68.
  • the portion of the remaining periphery is then closed by a third sealing element 663, as will be more precisely described below, which makes it possible to ensure complete sealing between the pump body 60 and the cover 64, and therefore a sealing of the chamber 68.
  • the peristaltic pump also comprises a third sealing element 663.
  • the latter comprises a plate through which the inlet 61 and outlet 62 connectors pass.
  • the plate is made of silicone, or any other material capable of ensuring the seal.
  • the plate then comprises two orifices allowing the passage of the input 61 and output 62 connectors.
  • the plate is then in contact with the input 61 and output 62 connectors, the pump body 60, but also the cover 64 as can be seen on the figure 7 .
  • This plate makes it possible in a remarkable way, in association with the second sealing element 662 previously described, to complete the sealing of the chamber 68, that is to say to complete the sealing between the cover 64 and the pump body 60, coming to close the periphery of the room.
  • the chamber 68 is completely sealed. Consequently, if liquid should accidentally come (breakage or disconnection of the deformable pipe 63) to escape from the pipe deformable 63 and end up in the chamber 68, the liquid, usually water, would be trapped in the chamber 68 without being able to escape.
  • This makes it possible to obtain a peristaltic pump that is particularly safe because it is completely sealed, that is to say unable to let any liquid escape, even in the event of its deformable pipe breaking. It is then possible to use the peristaltic pump of the invention in locations where any presence of liquid is prohibited, such as for example in the immediate vicinity of electrical or electronic components.
  • the invention as illustrated includes another safety device, which may moreover constitute an invention as such.
  • the pump illustrated on the figures 6 and 7 comprises a drain device 67 designed to, in the event of rupture of the deformable pipe 63 of the peristaltic pump 6, drain the liquid from the chamber 68 towards the outside of the peristaltic pump 6 according to a controlled trajectory.
  • This safety device is particularly effective when it is associated with a household appliance 1 which includes a liquid evacuation device 114, as detailed below.
  • the peristaltic pump 6 comprises two holes 671 which then form a drain device 67 connecting the chamber 68 and the outside of the pump at a precise location, judiciously selected by the designers.
  • Each of the holes has a diameter of approximately 1.2 mm, which corresponds to an evacuation section of 2.26 mm 2 .
  • the holes are spaced 2.5 mm apart.
  • the emptying device 67 By combining the emptying device 67 with the sealing elements 661, 662, 663 previously defined, as shown, the controlled emptying of the chamber 68, after a rupture of the deformable pipe 63, only by the drain device 67, is guaranteed regardless of the orientation of the pump in space. Indeed, if the pump is oriented in accordance with the figure 6 , then the liquid will naturally, by gravity, flow through the emptying device 67 which is then at a low point of the pump body.
  • first sealing element 661 and of the third sealing element 663 are, in this case, not necessary for good flow only by the emptying device since these elements are then located above the emptying device 67
  • the emptying device 67 finds itself at a high point of the pump.
  • the liquid could then flow through the gap between the pump body 60 and the inlet 61 and outlet 62 connectors.
  • the liquid could also escape through the gap between the drive shaft 51 and the pump body 60, even before reaching the emptying device 67.
  • the housing 111 comprises a liquid evacuation device 114 designed to evacuate, outside the housing 111, the liquid in the event of a liquid leak from a liquid transport device 32, 6, 33, in this case a peristaltic pump 6 or a pipe 32, 33, and/or liquid storage, in this case a reservoir 3.
  • the liquid evacuation device 114 is arranged so that the liquid cannot come into contact with the electrical or electronic component. More precisely, the liquid evacuation device 114 comprises two orifices 1141 arranged one beside the other. Each of the orifices 1141 passes through the box 111, so as to put communication inside the box 111 and outside.
  • each orifice 1141 is a hole whose diameter is substantially equal to 1.2 mm.
  • the possible evacuation section is approximately 2.26 mm 2 .
  • the holes are approximately 2.5mm apart.
  • the liquid discharge device 114 is located at a distance of approximately 25 mm from the edge of the first treatment surface 112, which makes it possible to guarantee a safety distance during the flow of water through the evacuation device 114 and to prevent the liquid evacuated from coming into contact with the first treatment surface 112.
  • the liquid evacuation device 114 is located opposite the second arm 12 which makes it possible to hide it when the clamp to be smoothed is closed, thus improving the overall aesthetics.
  • the drain device 67 of the peristaltic pump 6 communicates with the evacuation device 114 of the box 111.
  • the emptying device 67 is located opposite the evacuation device 114.
  • the emptying device 67 is located opposite the evacuation device 114. More precisely, the emptying device 67 comprises two holes 671, the evacuation device 114 also comprises two orifices 1141, each of the holes 671 belonging to the emptying device 67 being arranged opposite, that is to say opposite, a orifice 1141 of the evacuation device 114.
  • the evacuation section of the emptying device 67 and that of the evacuation device 114 are substantially identical and of the order of 2.26 mm 2 which guarantees the total flow of the liquid which could be in the chamber 68 without funnel phenomenon.
  • the emptying 67 and evacuation 114 devices are then separated by a sealing element 664 ensuring the seal, in this case an O-ring, between the emptying device and the evacuation device 114.
  • the element of seal 664 is held in a housing around the drain device 67 and is then in contact with the housing 111 and the peristaltic pump 6, and in particular the pump body 60.
  • the liquid in the event of rupture of the deformable pipe 63 of the peristaltic pump 6 of the household appliance 1, the liquid would then be evacuated in a controlled manner, defined by design, that is to say in a considered manner, only by the evacuation device 114, and via the drain device 67 of the peristaltic pump 6, so that the liquid cannot come into contact with any electrical or electronic component located inside the box 111.
  • the inside of the box 111 is preserved from any possible liquid, and this same in the event of a failure within the peristaltic pump 6, which considerably improves the safety of the household appliance 1, both for the appliance itself (its electrical or electronic components) and for the user (risk of 'electrocution).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
EP19789966.9A 2018-10-22 2019-10-17 Pompe peristaltique etanche pour appareil electromenager Active EP3870855B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP23185139.5A EP4249750A3 (fr) 2018-10-22 2019-10-17 Pompe peristaltique etanche pour appareil electromenager

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1859755A FR3087503B1 (fr) 2018-10-22 2018-10-22 Pompe peristaltique etanche pour appareil electromenager
PCT/EP2019/078176 WO2020083736A1 (fr) 2018-10-22 2019-10-17 Pompe peristaltique etanche pour appareil electromenager

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP23185139.5A Division EP4249750A3 (fr) 2018-10-22 2019-10-17 Pompe peristaltique etanche pour appareil electromenager

Publications (2)

Publication Number Publication Date
EP3870855A1 EP3870855A1 (fr) 2021-09-01
EP3870855B1 true EP3870855B1 (fr) 2023-08-09

Family

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EP19789966.9A Active EP3870855B1 (fr) 2018-10-22 2019-10-17 Pompe peristaltique etanche pour appareil electromenager
EP23185139.5A Pending EP4249750A3 (fr) 2018-10-22 2019-10-17 Pompe peristaltique etanche pour appareil electromenager

Family Applications After (1)

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Country Status (7)

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US (1) US20210381502A1 (zh)
EP (2) EP3870855B1 (zh)
JP (1) JP2022508891A (zh)
CN (2) CN211397841U (zh)
ES (1) ES2962785T3 (zh)
FR (1) FR3087503B1 (zh)
WO (1) WO2020083736A1 (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3087503B1 (fr) * 2018-10-22 2021-08-27 Seb Sa Pompe peristaltique etanche pour appareil electromenager
FR3126458A1 (fr) 2021-08-27 2023-03-03 L'oreal Pompe péristaltique pour appareil électroménager, en particulier pour appareil de coiffure diffusant de la vapeur telle qu’une brosse capillaire.
FR3132419A1 (fr) 2022-02-07 2023-08-11 L'oreal Appareil de coiffure à diffusion de vapeur équipé d’une pompe à membrane.

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3421447A (en) * 1966-10-26 1969-01-14 Challenge Cook Bros Inc Fluid pump
DE3326784C2 (de) * 1983-07-25 1986-06-05 Fresenius AG, 6380 Bad Homburg Peristaltisch arbeitende Rollenpumpe
US20100209263A1 (en) * 2009-02-12 2010-08-19 Mazur Daniel E Modular fluid pump with cartridge
FR2967018B1 (fr) * 2010-11-05 2014-04-25 Seb Sa Appareil de coiffure a pompe peristaltique
FR2967020B1 (fr) * 2010-11-05 2012-12-21 Seb Sa Appareil de coiffure a vapeur compose d'une base et d'une unite portable
FR2967017B1 (fr) 2010-11-05 2014-04-04 Seb Sa Appareil de coiffure a vapeur
GB2495936B (en) * 2011-10-25 2018-05-23 Watson Marlow Ltd Peristaltic pump and pumphead therefor
US9777720B2 (en) * 2013-03-14 2017-10-03 Blue-White Industries, Ltd. High pressure, high flow rate tubing assembly and adapter for a positive displacement pump
CN203614372U (zh) * 2013-10-12 2014-05-28 施世英 一种软管泵
CN105708099B (zh) * 2016-02-04 2017-07-18 深圳市洋沃电子有限公司 一种蒸汽发生器及具有该蒸汽发生器的美发装置
CN207064212U (zh) * 2017-08-16 2018-03-02 广州极飞科技有限公司 泵体组件、泵、喷洒***及无人机
FR3087503B1 (fr) * 2018-10-22 2021-08-27 Seb Sa Pompe peristaltique etanche pour appareil electromenager

Also Published As

Publication number Publication date
WO2020083736A1 (fr) 2020-04-30
US20210381502A1 (en) 2021-12-09
CN211397841U (zh) 2020-09-01
FR3087503A1 (fr) 2020-04-24
EP4249750A3 (fr) 2023-11-15
FR3087503B1 (fr) 2021-08-27
EP3870855A1 (fr) 2021-09-01
CN111075697A (zh) 2020-04-28
ES2962785T3 (es) 2024-03-21
EP4249750A2 (fr) 2023-09-27
JP2022508891A (ja) 2022-01-19
CN111075697B (zh) 2023-12-01

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