CN100506663C - Combined device for encapsulating and dispensing liquids - Google Patents

Abstract

An assembly for packaging and dispensing liquid may include a receptacle for containing a supply of liquid and a refillable unit arranged to be placed in a separable manner on the receptacle. The refillable unit may include a body and a piston that is movable relative to the body and that co-operates therewith to define a storage chamber of variable volume for containing the liquid. The storage chamber may be put into fluid communication with the receptacle to be filled therefrom when the refillable unit is placed on the receptacle. The refillable unit may also include a pump arranged to take liquid from the receptacle when the refillable unit is placed thereon, and to take liquid from the storage chamber when the refillable unit is separate from the receptacle. The pump may include a pump chamber that is distinct from the storage chamber.

Description

Combined device for encapsulating and dispensing liquids

technical field

The invention relates to a combination device for encapsulating and dispensing liquids, in particular cosmetics, including care products.

Background technique

In the meaning of the present invention, the term "cosmetics" is used to denote cosmetic products, as defined by Directive 93/35/EEC of 14 June 1993 as amended by Directive 76/768/EEC.

Patent application FR2 773 443 discloses a refillable atomizing sprayer comprising a body forming a chamber for containing a liquid. The sprayer also includes a piston that is slidably received in the body and can be depressed to reduce the volume of the chamber and dispense the liquid. The amount of substance dispensed depends on the length of the piston's depression stroke, with the chamber being completely emptied when the piston is depressed its full stroke. It is difficult for such nebulizers to dispense the precise amount of liquid corresponding to the largest volume fraction of the chamber.

Patent application FR 2 705 039 discloses a dispenser device comprising a container containing a supply of liquid and fitted with a first pump and a refillable bottle fitted with a second pump . Via the first pump, the bottle can be refilled with liquid. To dispense the liquid contained in the bottle, the user separates the bottle from the container and activates the second pump.

Patent application FR 2 813 291 discloses a system for filling a second bottle from a main bottle. The primary bottle is fitted with tubes which enable fluid communication between the primary bottle and the secondary bottle. When the secondary bottle is fitted with a pump, the pump must be removed before interconnecting the primary and secondary bottles for refilling.

Patent application FR 2 802 447 discloses a refillable spray system comprising a tank and a sprayer fitted with a pump. The tank and sprayer are provided with a tube suitable for temporary connection to refill the sprayer. Opening at the top of the tube that protrudes into the sprayer to allow liquid to flow directly into the tank of the spray system.

Patent application FR 2 556 091 discloses a detachable refillable device comprising a body and a piston slidably accommodated in the body. The unit does not have a pump.

Contents of the invention

SUMMARY OF THE INVENTION The present invention seeks to provide a combined packaging and dispensing device which is simpler in construction and more accurately dispenses liquid.

Accordingly, the present invention provides a combined device for packaging and dispensing liquids comprising:

Containers containing the liquid supplied;

A refillable unit, detachably placed on the container, the refillable unit comprising:

A body and a piston that moves relative to the body, cooperating to form a variable volume storage chamber for holding a liquid, the storage chamber being in flow communication with the container for filling from the refillable unit when placed on the container ;and

A pump capable of sucking liquid from the container when the refillable unit is placed on said container and from the storage chamber when the refillable unit is separated from the container, the pump having a different shape than the storage chamber The pump chambers, ie they do not coincide, wherein said storage chamber is formed below the piston if the refillable unit is viewed in a head-up position.

By means of the present invention, when the refillable unit is used separately from the container, relatively precise one or more measured quantities of liquid can be dispensed, each corresponding to only a fraction of the maximum volume of the storage chamber. The amount dispensed is determined by the maximum volume of the pump chamber, wherein the maximum volume of the pump chamber is less than the maximum volume of the storage chamber.

The pump can also be used to draw liquid from a supply of liquid in a container.

When the container has an outlet aperture adapted to be in flow communication with the refillable unit storage chamber for refilling, the container does not require a pump capable of delivering liquid into the outlet aperture and the container can therefore be relatively simple in construction.

Thus, the refillable unit of the combination device of the present invention may comprise only one pump, thereby reducing costs.

Advantageously, the refillable unit may be arranged to generate suction in said storage chamber, at least when said storage chamber is in flow communication with said container, so that said storage chamber may be filled.

In an embodiment of the invention, the pump chamber is isolated from the storage chamber at least when said pump is dispensing liquid.

In an embodiment of the invention, the pump has a suction aperture which is adapted to be positioned close to, eg vertically aligned with, the outlet aperture of the container when the refillable unit is placed on the container.

Therefore, the liquid remaining in the container can follow a shorter path through the outlet hole to the suction hole of the pump, thereby limiting the head loss.

In an embodiment of the invention, the pump is a "vacuum" pump, ie a pump without any air inlet. Pumps are available with or without pre-compression.

The container may comprise a support arranged to accommodate the refillable unit, eg the support remains fixed relative to the rest of the container. The support may consist of a separate part, or it may be integral with the container.

The refillable units and containers may comprise corresponding fastener portions adapted to releasably engage, in particular, snap-fit, screw-fit, or bayonet fixed by friction, or fit in other ways. This secures the refillable unit to the container when the storage chamber is being filled and/or when the pump of the refillable unit is used to draw liquid from the container.

Advantageously, at least one of the refillable unit and the container comprises a raised portion, at least when the refillable unit is used to draw liquid from the container fit to seal the suction port of the pump from the outside world in a sealed manner.

The container may include an air intake channel through which air may be introduced when the pump of the refillable unit is used to draw liquid from the container.

In a variant, the container has no gas inlet and notably has a piston or bladder in contact with the liquid. As an example, a container may have a piston that moves in response to liquid being drawn from the container. As an example, the liquid could alternatively be contained in a soft capsule.

Preferably, the volume of the storage chamber is at its minimum, eg substantially equal to zero, eg when the refillable unit is placed on the container so that the pump draws liquid therefrom and the pump is in communication with the dip tube of the container.

The piston may have an aperture to place the container in fluid communication with the storage chamber.

Advantageously, the piston has a shape substantially matching that of the pump, thereby reducing the amount of liquid retained in the refillable unit when the volume of the storage chamber is at a minimum.

The refillable unit may include a check valve disposed in the bore of the piston, the check valve being movable between a first position closing the bore of the piston and a second position enabling fluid to flow through the bore. The check valve can include a body with an internal passage.

In a variant, the non-return valve includes a ball and the refillable unit includes a resilient return arranged to apply a force to the ball to tend to return to the closed first position.

When the refillable unit is placed on the container, the piston may comprise an engagement member adapted to removably engage with the engagement member of the container by screwing or snap-fitting.

In an embodiment of the invention, the piston includes a skirt forming a channel in communication with the piston bore, the skirt including the engagement member.

In a variant, the piston comprises coaxial inner and outer skirts on which the engagement elements are arranged, in particular the inner skirt forming a channel communicating with the bore of the piston.

The container may comprise a central portion adapted to engage within the refillable unit body when said refillable unit is placed on the container, the central portion comprising an engagement member adapted to cooperate with the engagement member of the piston . The central part can be used to hold the dip tube.

The container can contain cosmetic or care products, in particular perfume. For example, a liquid may also be a cream.

The invention also provides a refillable unit removably placed on a container, the refillable unit comprising:

A body and a piston that moves relative to the body, cooperating to form a variable volume storage chamber for holding a liquid, the storage chamber being in flow communication with the container for filling from the refillable unit when placed on the container ;and

A pump capable of sucking liquid from the container when the refillable unit is placed on said container and from the storage chamber when the refillable unit is separated from the container, the pump having a different shape than the storage chamber A pump chamber, wherein said storage chamber is formed below the piston if the refillable unit is viewed at eye level.

The refillable unit may be arranged such that suction is generated in the storage chamber at least when the storage chamber is in flow communication with the container, whereby said storage chamber is filled under the action of the suction generated in this manner.

Preferably, the volume of the pump chamber is smaller than the maximum volume of the storage chamber.

The piston may have a bore that puts the container in flow communication with the storage cavity.

In another aspect, the present invention also provides a method of dispensing a liquid, the method comprising the steps of:

·Provide package dispensing assembly, the assembly includes:

the container containing the supplied liquid; and

the above-mentioned refillable unit;

draw liquid from the container with the refillable unit when the refillable unit is placed on the container, and draw liquid from the storage chamber of the refillable unit when the refillable unit is separated from the container;

full-stroke activation of the pump, dispensing a volume of liquid drawn by the refillable unit, the volume of liquid dispensed corresponds to only a small fraction, in particular less than one-tenth, of the maximum volume of the storage chamber;

For pumps with suction holes and containers with outlet holes, the method may include the following steps:

Make the suction hole communicate with the outlet hole;

Suction of liquid in the container;

For a refillable unit having a body and a piston sliding within the body, the method may comprise the following steps:

· placing the refillable unit onto the container; and

·The piston moves relative to the body to increase the volume of the storage chamber, and the piston moves away from the pump during this movement.

The invention may be better understood by reading the following detailed description of the non-limiting examples and by referring to the accompanying drawings.

Description of drawings

· Figure 1 is a partial view of a packaging and dispensing assembly according to the present invention;

· Figure 2 is a partial axial sectional view of the combined device of Figure 1;

Fig. 3 is a partial axial sectional view of the detachable part of the combination device of Fig. 2 when it is separated from the container;

- Figure 4 is a partial axial sectional view of the refillable unit pump of the combination of Figures 2 and 3;

Fig. 5 is a partial axial sectional view of a packaging and dispensing combination device according to another embodiment of the present invention;

• Figures 6 and 7 are partial axial cross-sectional views of a packaging assembly according to another embodiment of the present invention at two different positions.

Detailed ways

FIG. 1 shows a package dispense assembly 1 according to the invention.

The combined device 1 comprises a container 2 which comprises a body 3 of the container and a support 4 fixed on the body 3 .

Container 2 contains the supplied liquid.

In the example shown, the liquid is a cosmetic product, more specifically a perfume or some other low viscosity liquid containing an alcoholic solvent.

In a variant, the liquid may be a cream, such as a care product, a lotion, or some other liquid applied to parts of the body or face, including the hair.

The support 4 comprises: an assembly skirt 5 enabling screwing of the container body 3 to the neck 6; a substantially cylindrical wall 8 in the X-axis forming a cavity 9 for receiving a refillable unit 10 ; and a central portion 15 extending within cavity 9 . The cross-section of the wall 8 may be circular, elliptical or other shapes.

In the example shown, the assembly skirt 5 is screwed onto the neck 6 , but in variants it can be fixed by other means, in particular snap-fit or clip-on.

Where appropriate, at least one of the neck 6 and the support 4 may include an anti-rotation device, such as a raised portion (not shown) that prevents the support 4 from rotating relative to the container 2 .

The support 4 is pressed against the neck 6 to prevent the liquid from escaping while leaving an air inlet passage between the inside of the container 2 and the outside.

In a variant, there need not be an air inlet between the inner and outer sides of the container.

The cross-section of the wall 8 can be circular, oval or other shapes.

The central part 15 comprises a tubular wall 16 in the X-axis, slightly tapering upwards in the shape of a truncated cone, and its bottom end is connected to the wall 8 via a bottom wall 17 .

In variants, the tubular wall 16 may have some other shape.

In the cavity formed by the tubular wall 16 is fixed a dip tube 99 , the tip of which opens out over the outlet opening 19 of the central part 15 .

At the top end of the central part 15, the outlet opening 19 has an engagement member 20, which in the example shown has an annular flange 21, the purpose of which is described below.

Said central part comprises an internal annular groove 22 between the joint 20 and the bore 19 .

The refillable unit 10 comprises a body 25 comprising an X-axis cylindrical wall 26 and a bottom wall 27 . The bottom wall has an opening 28 through which the central part 15 can be inserted when the refillable unit 10 is inserted into the cavity 9 of the container.

The body 25 has splines at its bottom parallel to the X-axis for docking, see below.

The refillable unit 10 comprises a piston 32 pressed against the inner surface of the body 25 by upper and lower annular lips 33, 34, respectively.

The piston 32 and the body 25 together form a storage chamber 55 of variable volume above the piston 32 . The piston includes a skirt 35 extending below the annular lips 33, 34, which skirt forms a channel 36 connecting the cavity above the piston 32 with the cavity below the piston.

The top of the skirt 35 has an inner annular flange 37 and its bottom includes a hole 38 in which a non-return valve 39 engages.

In the example shown, the bottom of the skirt 35 is joined to an engaging element 42 of an annular groove 48 which engages the annular flange 21 of the container 2 with a snap fit.

The non-return valve 39 comprises a hollow body forming an X-axial internal channel 45 which opens at its top to the outside through a transverse hole 47 .

The outer side of the check valve 39 has an annular flange 46 snap-fitted into the groove 22 of the container 2 so as to provide sealing support between the check valve 39 and the central portion 15 of the container 2 and to fix each other.

There is another annular flange 51 above the annular flange 46 on the outer surface of the check valve 39. When the check valve 39 enters the hole 38 upwards, it can be gradually pressed to the inner surface of the skirt 35 to have a certain frictional force, thereby When the refillable unit 10 is seated on the container 2, the movement of the check valve 39 may be restricted.

The flange 51 also keeps the check valve 39 closed when the refillable unit 10 is used separately from the container 2 , thereby ensuring the tightness of the refillable unit 10 .

As shown in Figure 3, the check valve 39 has a frusto-conical top 49 which is gradually pressed onto the frusto-conical surface 52 of the skirt 35 to close the piston 5 when the refillable unit 10 is separated from the container 2. hole 38.

The refillable unit 10 includes a top wall 54 with an assembly skirt 56 secured into the body 25 .

The skirt 56 also serves to secure a vacuum pump 150 which includes a pump chamber 157 .

The pump 150 includes a conduit 162 whose length is shorter than the height of the body 25 and has a suction hole 163 at the bottom end of the conduit.

As shown in FIG. 4, the pump 150 may include a body 151 secured to the skirt 56 by a snap fit.

A control rod 152 is installed in the body 151, which can slide against the force of a return spring 153 in a compressed state. The end piece 154 is fixed on the lower end of the control rod 152 .

As shown in FIG. 2 , a button 98 which functions as an actuator and dispensing element is press-fit engaged to the top end of the lever 152 .

The control rod 152 has an axial hole 158 extending to the top end, and leads to the pump chamber 157 through a radial hole 155 .

A piston 156 is provided to slide around the rod 152 and cooperates with the body 151 to form a pump chamber 157 .

The body 151 forms a seat for the ball 159, closing the hole 163 when at rest.

When the control rod 152 is at rest, the piston 156 closes the hole 155 .

When the user presses the button 98 , the lever 152 is depressed into the body 151 . At the beginning of its depression stroke, the control rod 152 does not drive the piston 156 . Accordingly, relative movement of the control rod and piston 156 takes place, whereby the hole 155 is opened. As the control rod 152 continues its downward stroke, it carries the piston 156 downward. The liquid in pump chamber 157 is then pressurized and flows through hole 155 into hole 158 for dispensing.

Although the lever 152 moves downward, the ball 159 remains pressed against the seat at the bottom of the body 151 , isolating the pump chamber 157 from the storage chamber 55 .

When the user releases the button 98 , the lever 152 begins to slide in the piston 156 until it abuts against the top of the end piece 154 .

Thus, the axial hole 158 is isolated from the pump chamber 157, and the control rod 152 continues to move upward under the push of the spring 153, generating suction in the pump chamber, while the ball 159 rises, and the liquid is sucked into the pump chamber 157.

Of course, the pump 150 can have other structures without departing from the scope of the present invention. In particular, the ball 159 can be replaced by a suction check valve made of elastomer.

The shape of the piston 32 basically matches the shape of the pump 150, so the volume of the storage chamber and passage 36 is as small as possible when the piston is lifted to the highest position.

The hole 163 is positioned away from the top wall of the storage chamber 55 so that it can be submerged in the liquid even if there is a layer of air above the liquid at the top of the storage chamber 55 .

In the example shown, the skirt 35 surrounds the pump conduit 162 with a small amount of play, and the flange 37 presses gradually against the pump 150 to maintain a seal.

The combination device 1 has several uses.

In order to remove and dispense the liquid in the container 2, the user places the refillable unit 10 on the container 2, whereby the engagement piece 42 of the piston 32 engages on the engagement piece 21 of the central part 15 of the container 2, see Fig. 2.

Closure 39 moves upwards, opening transverse hole 47 , so that internal channel 45 first communicates with channel 36 of skirt 35 and then with outlet opening 19 of container 2 .

When the refillable unit 10 is fixed to the container 2, the volume of the storage chamber 55 is at a minimum, the piston 32 is pushed until it is gradually pressed onto the pump 150, and the annular flange 37 is gradually pressed onto the conduit 162 of the pump 150 to seal, see Fig. 2.

The user presses the button 98 to dispense the liquid in the pump chamber of the pump 150 .

Release the button 98 and the pump 150 will suck the liquid in the container 2, and the liquid will flow through the dip tube 99, the outlet hole 19, the internal passage 45 of the check valve, and the passage 36 of the skirt 35.

Additional application of pressure to the button 98 dispenses the liquid so drawn in.

In order to fill the storage chamber 55 , the user can move the body 25 of the refillable unit upwards relative to the container 2 , while the piston 32 is still fixed on the engagement member 20 of the container 2 .

The piston 32 then slides downward relative to the body 25 , creating a suction force in the storage chamber 55 , causing the liquid in the container 2 to be sucked through the internal channel 45 of the closure 39 .

At the end of the stroke, the lower lip 33 of the piston 32 is pressed against the spline 30 by the stiffer part, so as the user continues to move the refillable unit 10 upwards:

The skirt 35 is separated from the central part 15, the check valve 39 remains fixed on the central part 15, and then

the frusto-conical portion 49 is gradually pressed onto the corresponding frusto-conical surface 52 of the skirt 35, thereby closing the hole 38, and then

• The check valve 39 is separate from the central part 15 .

This sequence ensures that the check valve 39 is closed when the refillable unit 10 is removed.

When the refillable unit 10 is separated from the container 2 , the user can dispense the liquid contained in the storage chamber 55 by activating the pump 150 .

As the storage chamber 55 is emptied, the piston 32 is raised in the body 25 .

When the refillable unit is partially filled with liquid, placing said refillable unit in place on the container 2 causes the liquid in the storage chamber 55 to drain into the container 2 while the piston 32 is fixed in the central portion Check valve 39 enters open state before 15.

Certainly, the present invention is not limited to above-mentioned several embodiments

FIG. 5 shows a package dispense assembly 200 according to another embodiment of the present invention.

The combination 200 includes a refillable unit 10', which is similar to the refillable units described above.

The refillable unit 10' has a smaller height and a larger cross-section than the refillable unit 10.

The refillable unit 10' can be filled with a container 202 comprising a container body 203 with a neck 206 to which a support 204 is fastened, for example by snap-fitting.

By way of example, the support comprises an X-axis tubular skirt 205 extending over the neck 206 of the container 203 to accommodate the refillable unit 10'.

6 and 7 illustrate a packaging assembly 300 according to another embodiment of the present invention.

The combined device 300 comprises a container 301 comprising a container body 302 and a support 303 secured to the body 302 .

The support 303 includes: an assembly skirt 304, which screws the container body 302 onto the neck 305; a transverse wall 307, which presses to the top of the neck 305; and a cylindrical wall 308 in the direction of the X axis, which forms a hollow Cavity 309 for receiving a refillable unit 310 .

When the assembly 300 is viewed in plan, the main part of the wall 308 extends below the transverse wall 307 , and the part of the wall 308 above the transverse wall 307 forms a cylindrical portion 312 .

The support 303 also includes a central portion 313 protruding into the cavity 309 , comprising an X-axis cylindrical wall 314 whose bottom end is connected to the wall 308 by a bottom wall 315 .

The top end of the wall 314 includes an engagement member 317 with a recess 318, the purpose of which is described below.

Central portion 313 includes an end piece 319 projecting into the cavity formed by wall 314 , end piece 319 including a frustoconical wall 320 joining wall 314 below joint 317 .

The frusto-conical wall 320 protrudes from a cylindrical portion 322 along the X-axis direction, and its top end communicates with an outlet hole 323 .

The dip tube 99 is fixed in the cavity formed by the cylindrical portion 322 and its top end opens to the outlet hole 323 .

The refillable unit 310 includes a body 330 having a tubular wall 331 in the direction of the X-axis and a folded edge portion 332 at the bottom end of the tubular wall 331 .

The edge portion 332 is an upwardly tapering truncated cone having an annular edge 332 with an inner diameter slightly smaller than the maximum diameter of the engagement member 317 .

When the refillable unit 310 is inserted into the cavity 309 of the container 301, the rim 333 defines an opening 335 through which the central portion 313 can be inserted.

The refillable unit 310 includes a piston 337 which cooperates with the body 330 to form a storage chamber 338 above which the volume of the storage chamber is variable.

The piston includes coaxial inner and outer skirts 340, 341, the inner skirt 341 joining the inner surface of the outer skirt 342 above the middle of the outer skirt 342, forming a downwardly tapering frusto-conical opening 342.

The collar 337 includes bottom and top annular lips 345 , 346 which are attached to the outer skirt 340 and which press against the inner surface of the body 330 .

The outer skirt 340 includes an engagement member 347 having an annular flange 348 fixedly engaged to the engagement member 317 of the container 301 by snap-fitting when the refillable unit 310 is inserted into the cavity 309 of the container. Groove 318.

The cavity 350 formed by the inner skirt 341 is used to accommodate a check valve including a ball 351 which presses against a bearing surface 352 of the cavity 350 and closes a channel 353 formed by the inner skirt 341 .

The refillable unit 310 includes an elastic return member 354 ready to apply a force to the ball 351, which force presses the ball against the bearing surface 352, closing the channel 353.

In the example shown, the elastic return member 354 comprises a helical spring, one end of which presses on the ball 351 and the other end presses on the piston 337 .

A hole 355 formed in the annular support surface 352 can communicate with the container outlet hole 323 .

The top end of the body 330 includes a flange 357 that allows the pump 150 to be seated by a baffle 358 .

Pump 150 includes conduit 162 engageable in passage 353 of piston 337 through opening 342 .

The piston shape matches the shape of the pump 150 .

The combined device 300 can be used in a variety of ways.

In order to take out the liquid in the container 301 and dispense, the user puts the refillable unit 310 on the container 301 so that the joint 347 of the refillable unit 310 is engaged to the joint of the container due to the insertion of the flange 348 into the groove 318 317, as shown in Figure 6.

The inner skirt 341 of the piston 337 presses onto the end piece 319 of the container to seal.

The ball 351 overcomes the active force of the spring 351 and is moved by the upward force of the end piece 319 to leave the support surface 354 and open the hole 355 .

When the refillable unit 310 is secured to the container 301 , the storage chamber 338 has a minimum volume, pushing the piston 337 until it presses against the pump 150 .

Pump 150 is pressed against piston 337 and seals.

By pressing the button 98, the user can dispense liquid from the pump chamber of the pump 150.

By releasing the button 98, the pump 150 sucks the liquid in the container 301, and the liquid flows through the dip tube 99, the outlet hole 323, and the channel 353 of the skirt 341.

To fill the storage chamber 338, the user moves the body 330 of the refillable unit upward relative to the container 301, while the piston 337 remains secured to the adapter of the container.

Therefore, the piston 337 slides relative to the body 330 , thereby generating suction in the storage chamber 338 , so that the liquid contained in the container is sucked through the hole 323 of the container and the channel 353 of the piston 337 .

At the end of the stroke, the annular rim 333 of the body 330 is pressed against the engagement member 317 of the container and the engagement member 347 of the piston 337, thereby separating the annular flange 348 from the groove 318 of the container by elastic deformation.

When the refillable unit 310 is separated from the container, the spring 354 presses the ball 351 back against the bearing surface 352, thereby closing the hole 355, see FIG. 7 .

The user dispenses the liquid in the reservoir chamber 358 by pressing the pump 150 .

The piston rises in the body 330 when the storage chamber 338 is emptied.

Throughout the specification, including the claims, the term "comprising/comprising a/an" should be understood as being synonymous with "comprising/comprising at least one/an", unless otherwise specified.

Claims (31)

1. A combined device for encapsulating and dispensing liquids, the combined device comprising: a container containing a supply of liquid and including a first outlet aperture; and A refillable unit, detachably placed on the container, the refillable unit comprising: A body and a piston movable relative to the body cooperating to form a variable volume storage chamber for containing liquid, the storage chamber including an aperture in flow communication with the first outlet aperture of the container for placement of the refillable unit into the container filling the storage cavity from the container on top; and A pump comprising a suction hole in communication with the hole in the storage chamber to draw liquid from the container when the refillable unit is placed on said container and to draw liquid from the storage chamber when the refillable unit is separated from the container suction liquid, the pump has a pump chamber different from the storage chamber, Wherein the storage chamber is formed below the piston if the refillable unit is viewed at a level view. 2. A combination according to claim 1, characterized in that the refillable unit is arranged to generate suction in the storage chamber to fill the storage chamber at least when the storage chamber is in fluid communication with the container. 3. The combination of claim 1, wherein the container has an outlet aperture adapted to be in flow communication with a refillable refillable unit storage chamber for refilling, and wherein the container is not capable of feeding liquid into the refillable unit storage cavity. pump with the outlet orifice described above. 4. A combination according to claim 1, characterized in that the pump chamber is isolated from the storage chamber at least when the pump is dispensing liquid. 5. The combination device according to claim 1, characterized in that the volume of the pump chamber is smaller than the maximum volume of the storage chamber. 6. The combination of claim 1, wherein the pump has a suction aperture, wherein the suction aperture of the pump is adapted to be placed adjacent to the outlet aperture of the container when the refillable unit is placed on the container, vertically aligned with the exit hole. 7. The combination of claim 1, wherein the pump is a vacuum pump. 8. A combination according to claim 1, wherein the container includes a support arranged to receive the refillable unit, said support remaining fixed relative to the remainder of the container. 9. The combination of claim 1, wherein the refillable unit and the container have respective engagement members adapted to engage in a detachable manner. 10. The combined device according to claim 9, characterized in that the engaging member is adapted to be fixed by buckling, screwing, bayonet or frictional. 11. The combination of claim 1, wherein at least one of the refillable unit and the container includes a raised portion adapted to engage the other of the refillable unit and the container to at least when When drawing liquid from the container with the refillable unit, the suction hole of the pump is isolated and sealed from the outside world. 12. The combination of claim 1, wherein the container includes an air inlet passage. 13. A combination according to claim 1, characterized in that the container has no air inlet. 14. A combination according to claim 13, wherein the container comprises a piston or a bladder. 15. A combination device according to claim 1, characterized in that when the refillable unit is placed on the container so that the pump can draw liquid from the container, when the pump is in communication with the dip tube of the container, the volume of the storage chamber is minimum. 16. The combination of claim 1 wherein the piston has an aperture for fluid communication of the container with the storage chamber. 17. The combination of claim 16, wherein the refillable unit includes a check valve movable between a first position and a second position, when in the first position the check valve closes the A piston bore through which the check valve allows fluid to flow in the second position. 18. The combination of claim 17, wherein the body of the check valve has an internal passage. 19. A combination as claimed in claim 17, wherein the check valve comprises a ball and the refillable unit comprises a resilient return member which is operable to force the ball back to its closed first position. a location. 20. The combination of claim 1, wherein the shape of the piston matches the shape of the pump. 21. The combination of claim 1, wherein the piston includes an engagement member adapted to releasably engage an engagement member of the container when the refillable unit is placed on the container. 22. The combination of claim 21 wherein the piston includes a skirt defining a passageway communicating with the bore of the piston, the skirt including the engagement member. 23. The combination of claim 21 wherein the piston includes coaxial inner and outer skirts, the outer skirts having engagement members. 24. The combination of claim 1 wherein the container includes a central portion adapted to engage within the body of the refillable unit when said refillable unit is placed on the container, Said central portion comprises an engagement member adapted to cooperate with the engagement member of the piston. 25. A combination according to claim 24, characterized in that the central portion is adapted to hold a dip tube. 26. Combination according to claim 1, characterized in that the container contains cosmetics, including care products, in particular perfumes. 27. The combination of claim 22, wherein the liquid is a cream. 28. The combination of claim 1, wherein the piston is progressively compressible against the pump in a sealed manner. 29. A combination according to claim 28, wherein the piston includes a flange which can be pressed progressively against the pump in a sealing manner. 30. A combination according to claim 29, wherein the flange is an inner annular flange included in the piston skirt. 31. The combination of claim 30, wherein the annular flange is located at the top of the skirt.

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