CN104685276B - Check-valves, injecting assembly and beverage preparing machine - Google Patents

Abstract

The present invention relates to the beverage preparing machine (100) of check-valves (10), injecting assembly (60) and this injecting assembly integrated.The check-valves of the present invention is by having the body of first fluid outlet (21) and can form by the plug member (30) of movement in body.Plug member have fluid intake (32) and lead in the first cavity (11) second fluid outlet (31), wherein fluid can plug member with first fluid outlet (21) to first surface (381) on apply pressure.Fluid pressure can overcome the power of elastomeric element, and plug member is biased into detent position by this elastomeric element.If the power of elastomeric element is overcome, then plug member moves to open position.At detent position, from cavity to first fluid, the fluid path of outlet is closed, and opens at this fluid path of open position.For making plug member move to its open position from its original closed position, the fluid pressure on first surface is necessarily equal to or more than predetermined threshold.

Description

Check-valves, injecting assembly and beverage preparing machine

Technical field

The present invention relates to a kind of check-valves, a kind of comprise check-valves and the injecting assembly of puncture needle and one is integrated with institute State the beverage preparing machine of injecting assembly.Especially, the check-valves of the present invention is in order at safe and compact reason and develops.

Background technology

Beverage preparing machine is known in the prior art, and these beverage preparing machines include for being injected by hot fluid With brewed and beverage injecting assembly in the capsule of beverage ingredient containing.Generally, this type of beverage preparing machine also includes For storing the reservoir of fluid, for heating the heater of the fluid from reservoir reception, removing for the liquid after heating Remove the air separator of air and for piercing through capsule and for the injecting assembly injecting a fluid in capsule.In most of feelings Under condition, check-valves is between air separator and puncture needle.Check-valves is opened when upstream is pressurized at fluid, and otherwise Close in case non-return flows in machine.

WO 2009/135899 A1 discloses the apparatus for producing beverages according to above-mentioned prior art.This apparatus for producing beverages Including keeping the device of capsule, for heating and supply the device of fluid and for the dress being expelled in capsule by hot fluid Put.This machine particularly discloses the check-valves being connected between air separator and the fluid line leading to injection member.

Fig. 1 of the application shows the check-valves used in WO 2009/135899 A1.This check-valves has water inlet 1a With outlet 2a.This check valve design has the drawback that between the preparation of two kinds of beverages, protects between check-valves and puncture needle Stay the big dead volume 3a of hot fluid.Fig. 1 illustrates, dead volume 3a particularly occurs in the cavity in check-valves and check-valves Downstream fluid pipeline in.

Any dead volume of the fluid in beverage preparing machine due to safety and health problem but disadvantageous.Dead band holds The long-pending development that can promote antibacterial, such as, originate from dead volume and/or from the use not yet ejecting from beverage preparing machine or taking off The capsule crossed moves to the antibacterial in dead volume.

EP 2 395 269 A1 discloses the check-valves of a kind of dead volume with reduction.This check-valves 1 is in the application Fig. 2 a shown in and include main part 2b and be positioned at the plug member 3b of body 2b.Plug member 3b bears and is accommodated in body Elastic load 4b in the cavity of portion 2b.Plug member 3b is movable.This check-valves also includes pipeline 9b, and pressure fluid can edge This pipeline flows.In the open position of plug member 3b, fluid can flow through the head portion of plug member 3b, and in plug portion serve The detent position of part 3b, fluid stream is interrupted by the head portion of plug member, because this head portion engages with seat 19b.Pipeline 9b also has the introduction pipe 32b being connected with chamber 30b.Due to this introduction pipe 32b, if fluid pressure exceedes predetermined threshold Value, then the fluid in pipeline 9b can apply pressure on the first surface 26b of plug member 3b, and can make plug member 3b Move to its open position.

Fig. 2 b shows how this check-valves is integrally formed with the air separator in beverage preparing machine.But, should Check-valves disadvantageously, it still leaves excessive dead volume in the downstream of check-valves, and due to its huge structure Type and occupy the big quantity space in machine.

In view of the above circumstances, it is an object of the invention to the shortcoming overcoming prior art.Specifically, it is an object of the invention to Thering is provided a kind of check-valves, a kind of injecting assembly and a kind of beverage preparing machine, they reduce due to the dead volume of reduction The risk of antibacterial development, and also can build more compact.

Summary of the invention

The main object of the present invention is realized by appended independent claims.Appended subclaims disclose More advantages of the present invention.

Especially, the present invention relates to a kind of check-valves, this check-valves includes:

-body, this body limits the cylindrical chamber with upper wall and lower wall, wherein:

Described upper wall includes central opening, and

Described lower wall has the shoulder around hole (vestibule),

The end in described hole includes central opening and forms the seat of described valve,

Being contained in the plug member in this body chamber, described plug member includes:

Having the pipe in hole, described pipe runs through the central opening of described body chamber upper wall and extends,

Around the cylindrical seal element of this pipe, this cylindrical seal element described body chamber is separated into upper cavity and under Cavity and make these cavitys relative to each other seal,

Wherein, the surface of the cavity that faces down of described cylindrical seal element has the shoulder around protuberance, and this highlights Cage structure becomes to coordinate in the hole of body chamber lower wall for use as described valve member,

Wherein, the hole in the pipe of described plug member is run through described plug member and is extended and occur that (expose, appear) exists In the lower chamber of described body chamber, and

-elastomeric element, described elastomeric element is contained in the upper cavity of body with by the protuberance pressure of described plug member Lean against on described valve seat.

This check-valves may be integrally formed in the beverage preparing machine as shown in WO 2009/135899 A1.This The geometry of bright check-valves is compacter than the check-valves of prior art much.Its compact reason mainly has its fluid and enters Mouthful and the plug member of its fluid issuing and body in the specific arrangements of elastomeric element.This check-valves particularly can build Become valve outlet port and entrance are in alignment with each other and also align with the moving direction of plug member, in order to realize the compact of maximum Property.

The check-valves of the present invention is only just opened when fluid stream is directed into valve outlet port from valve inlet and allows fluid pass through.? On contrary flow direction, the pressure on valve member will not rise beyond predetermined threshold.By for plug member is biased into it The power that the elastomeric element of detent position applies excessive and can not be by acting on the common fluid on plug member from valve outlet port Pressure overcomes.

Valve inlet is integrally formed with plug member so that it also moves together in company with the plug member of movement.Insert by making Aliging with the orientation of valve outlet port and valve inlet in the direction that moves freely of plunger member, particularly plug member, can build the tightest The check-valves gathered.

Preferably, during described elastomeric element is arranged in the upper cavity of described body chamber.This elastomeric element does not connects with fluid Touch and therefore there is longer service life.Additionally, the specific arrangements that elastomeric element is in the body of check-valves is conducive to non-return The compact design of valve.

Preferably, described elastomeric element is helical spring, and described helical spring runs through epicoele around described plug member The pipe of body is wound around.By helical spring being wrapped in around the fluid intake that second surface extends through body, Ke Yishi The design closely of existing check-valves.

Preferably, plug member includes the protuberance highlighted from first surface, wherein said connector towards first fluid outlet The second fluid outlet of parts is arranged on the side of described protuberance.

Preferably, the hole in the pipe of described plug member occurs on the side of the protuberance of described plug member.Therefore, The part being used for interrupting the fluid stream leading to second fluid outlet of valve outlet port and plug member is integrally formed.Thus, support The compactedness of check-valves.The preferred deformable in end of protuberance is to regulate the shape of valve outlet port, thus interrupts fluid stream.

Preferably, the low portion of described body and upper part are separate (separation, individually) part, these portions Divide and be connected to each other by engagement device.Therefore this check-valves can easily assemble or dismantle owing to changing or clean reason.

Preferably, elastomeric element is connected with the upper part of body with its first end, and with its second end and plug member Second surface connect.This connection such as can be realized by releasable snapping connection so that elastomeric element can be easy Ground is installed or is removed for cleaning or the purpose of regulation.

Preferably, the central opening in the hole of the lower wall of described body chamber is designed for installing the injection of beverage machine Pin.Therefore, it can make the assembly of entry needle and check-valves closely.Additionally, by entry needle is directly installed on valve outlet port On, the dead volume of this assemblies downstream can be reduced to the internal capacity of puncture needle.This check-valves does not have wherein at beverage Other downstream cavity of dead volume can be retained after preparation.

Preferably, the pipe of described plug member is designed for installing the flexible pipe of beverage machine.This check-valves is the most permissible It is easily mounted in different beverage preparing machine, such as in the machine as described in WO 2009/135899A1.This flexible pipe To move along with valve and move.

The invention still further relates to a kind of injecting assembly, this injecting assembly includes check-valves as above, for penetrating receiving The capsule of beverage ingredient for injecting a fluid into the puncture needle in described capsule, wherein said puncture needle is arranged on described the On one fluid issuing.

The machine compatible with the machine as described in WO 2009/135899 A1 only has been carried out slightly changing by this injecting assembly Make.This injecting assembly only has the dead volume of the fluid after the least beverage production, is particularly reduced to puncture needle The dead volume of internal capacity.The most closely, and the space requirement in beverage preparing machine is less for this injecting assembly.Should Therefore beverage preparing machine can be designed to be less.

The invention still further relates to a kind of beverage preparing machine, this beverage preparing machine includes: for storing the fluid storage of fluid Storage；Heater for the fluid that heating receives from described fluid reservoir；Injecting assembly as above, wherein said only Return valve to connect into from described heater reception fluid；And dispensing chamber, described dispensing chamber accommodates beverage for receiving and keeping The capsule of dispensing, and the fluid being used for be expelled in described capsule by described injecting assembly is as drink dispensing.

This beverage preparing machine can hold at the dead volume of the fluid of bacterial migration to check valve downstream or in this dead band Work in the case of the dangerous reduction of development in long-pending, because total dead volume reduces.Additionally, this beverage preparing machine can build Obtain less, because the space requirement that check-valves is in the machine is less.This beverage preparing machine can be with WO 2009/135899 A1 In the machine that presents similarly design, the injecting assembly according to the present invention is reconstructed by least a part of which.

Preferably, described beverage preparing machine also includes for removing air from heated fluid in described heater Air separator, wherein said check-valves connect into from described air separator receive the most airfree fluid.

Airfree fluid achieves more accurate in beverage preparing machine and the beverage brewing of quality raising.

In this application, term " upper (top) ", " under (bottom) ", " axially ", " side " are for describing the spy of the present invention The located in connection levied.What these terms were understood to mean is the direction in fluid importing valve.Therefore, " on " relate to the basis of valve Fluid path in valve is positioned at the part of upstream, and on the contrary D score relate to valve be positioned at downstream according to the fluid path in valve Part.Similarly, " axially " corresponding to by the fluid between valve inlet and valve outlet port shown in axis X X' in Fig. 3 General direction, " side " is corresponding to being perpendicular to the element of described axes orientation.

Accompanying drawing explanation

Hereinafter, invention will be described in more detail with reference to the appended schematic drawings:

-Fig. 1 illustrates the first design of the check-valves according to prior art.

-Fig. 2 a illustrates the second design of the check-valves according to prior art, and Fig. 2 b illustrates that this check-valves separates with air Device is integrally formed in respectively according in the beverage preparing machine of prior art.

-Fig. 3 illustrates the injecting assembly including check-valves and entry needle according to the present invention.

-Fig. 4 disclose in the dispensing chamber inserted in beverage preparing machine, include check-valves and note according to the present invention Penetrate the injecting assembly of pin.

-Fig. 5 a and 5b shows the parts of the injecting assembly according to the present invention.Specifically, Fig. 5 a illustrates the bottom of body Part and entry needle, Fig. 5 b illustrates low portion and the upper part of body.

-Fig. 6 a and 6b shows the parts of the check-valves according to the present invention.Specifically, Fig. 6 a shows the bottom of body Part and plug member, and Fig. 6 b shows plug member and elastomeric element.

-Fig. 7 illustrates the schematic diagram of the beverage preparing machine being integrated with the injecting assembly according to the present invention.

Detailed description of the invention

Shown in Fig. 3, include the check-valves 10 according to the present invention according to the injecting assembly 60 of the present invention and be directly attached to Puncture needle 50 on this check-valves 10.Puncture needle 50 is suitable for penetrating beverage ingredient containing and being maintained in beverage preparing machine Capsule or magazine or some other like container.Puncture needle 50 is further adapted for the fluid outlet from check-valves 10 directly received It is expelled in capsule.In the injecting assembly 60 according to the present invention, puncture needle 50 can be directly installed on the fluid of check-valves 10 In outlet 21, in order to reduce size and the dead volume of injecting assembly 60.

Check-valves 10 includes:

-the body 20 that is represented by dashed line,

-plug member 30, this plug member is at least partially disposed in body 20, and

-elastomeric element 40, this elastomeric element is arranged in body 20.

Body 20 limits has upper wall 201 and the cylindrical chamber of lower wall 202.Upper wall 201 includes central opening 22.Lower wall 202 have the shoulder 202a being positioned at around the 202b of hole.The end of described hole 202b includes the central authorities leading to the outside of described chamber Opening 202c also forms the seat of described valve.Central opening 202c connects with valve outlet port 21.

As also shown in Figure 5 the, body 20 is preferably divided into upper part 20b and low portion 20a.Upper part 20b can be connected with low portion 20a preferably by means of engagement device.Engagement device is such as designed to be arranged on body 20 Excrescence 36 in upper part 20b and the corresponding aperture 26 in the low portion 20a of body 20.Upper part 20b is in this feelings Can be buckled on low portion 20a under condition.But, the invention is not restricted to the engagement device of the type.The body of check-valves 10 20 are preferably made up of plastic material or metal.Under any circumstance, the material of body 20 the most at least can not be used in brewed drink The fluid of material passes through.

Body 20 has the symmetric shape around axis X X', and central opening 22, hole 202b and opening 202c are on this axis Centering.

Body 20 has the inner space for receiving plug member 30.This plug member includes the pipe 31 with hole 32. The entrance in this hole is corresponding to the fluid intake of valve.This pipe 31 extends through the central opening 22 of body chamber upper wall.Plug member Including the cylindrical seal element 38 around pipe 31.The chamber of body is separated into upper cavity 12 and lower chamber 11 by this potted component 38 And by sealed against one another for described cavity.This potted component has the overall disc of the lateral side extending to body chamber from pipe 31 Shape.Preferably, it combines O 38a to improve the sealing between two cavitys.Lower chamber 11 faced by cylindrical seal element Lower surface 381 there is the shoulder 39 being positioned at around protuberance 35.This protuberance 35 is configured to fit within body chamber lower wall For use as the valve member of check-valves in the 202b of hole.Preferably, lower chamber 11 has little volume to avoid the fluid dead band in valve to hold Long-pending.To this end, the shape of plug member is conformal, and as close possible to the shape of body lower wall 202.

Hole 32 in plug member pipe 31 extends through plug member and occurs in the lower chamber 11 of body chamber.Preferably Ground, the hole 32 in plug member pipe occurs at the outlet 321 on the side of plug member protuberance 35.Therefore, fluid is permissible Tilt or be perpendicular to pipe 31 and axis X X' is left.The end of protuberance 35 can be made up of rubber or plastic material, and is formed For consistent or the most similar with the in-profile of hole 202b.Owing to described end contacts with hot fluid, it is possible that Need to change after some time.This end sections be preferably deformable so as to the form fit of opening 202c, Thus interrupt the fluid stream coming from check-valves 10 most effectively.

Finally, check-valves includes elastomeric element 40, and this elastomeric element is contained in body upper cavity 12 so that by plug portion serve Part protuberance 35 is pressed against on valve seat.Such as, elastomeric element 40 can be helical spring.This helical spring is further preferably at body 20 In be arranged to be wrapped in around pipe 31, this pipe 31 extends preferably across upper cavity 12.Thus, it is possible to realize the compact of check-valves 10 Arrange.Preferably, the power of elastomeric element 40 is set so that plug member protuberance 35 is pressed against as central authorities when stopping On the valve seat of opening 202c.

Fluid issuing 21 is designed to be mounted directly entry needle 50.Such as, entry needle 50 can be screwed in and set threaded stream In body outlet 21 or on it.Or, entry needle 50 can be buckled in and be provided with the fluid of snap-on connector or similar engagement device and go out On mouth 21.Therefore, the downstream dead volume of check-valves 10 is reduced to the internal capacity of entry needle 50.Entry needle 50 is preferably by plastics Or metal makes.

Fluid intake at pipe 31 end be also designed to attaching fluid line or pipeline, such as flexible pipe with by fluid from adding Hot device or air separator are transported to fluid intake.As it is shown on figure 3, pipe 31 can be provided with some excrescences or stepped knot for this Structure, it allows easily to make flexible pipe only slide on fluid intake with little resistance, but prevents flexible pipe with bigger resistance From fluid intake landing.

Plug member 30 can move in body 20 along the direction XX' alignd with entry needle 50.Plug member 30 can root Move between open position and detent position according to the pressure of the fluid of conveying in valve.At work, fluid is transported to Hole 32 in pipe 31, flows into lower surface 381 and the body chamber of the cylindrical seal element 38 being formed at connector through plug member 30 Lower wall 202 between cavity 11 in.According to the pressure of the fluid introduced in lower chamber 11, plug member can resist elastic The power of part 40 moves up, and therefore prevents plug member protuberance 35 to be pressed against on valve seat and central opening 202c；Fluid can To be pumped through pin 50.

At its detent position namely when stopping or under the lower fluid pressure, plug member 30 is aligned closest to note Penetrate pin 50, and the central opening 202c of the protuberance 35 blind hole 202b of plug member is to interrupt from cavity 11 through fluid issuing 21 enter the fluid path in entry needle 50.If it practice, flow without fluid, then elastomeric element 40 is inclined by plug member It is pressed onto its detent position.

In its open position namely when fluid pressure is higher, pressure fluid is introduced into lower chamber 11 through outlet 381 In.If the fluid pressure on the surface 381 of lower chamber of cylindrical seal element is equal to or more than predetermined threshold pressure, Then plug member 30 overcomes the power applied by elastomeric element to be biased into this closing position from its detent position elastomeric element 40 Put and move to its open position.This opening from the end of the hole 202b as valve seat that moves upward of plug member 30 202c removes its protuberance 35.Therefore, fluid path entrance at the end of pipe 31 leads down to pin 50.

When the fluid pressure on the surface 381 of the cavity 11 that faces down of cylindrical seal element after preparing beverage is pre- When determining threshold value or drop under this threshold value, plug member 30 owing to being applied to the potted component 38 of plug member by elastomeric element 40 Upper surface 34 on elastic force and move to its detent position.

Such as due to from entry needle 50 or capsule causes to the back-pressure of fluid issuing 21, fluid flows in reverse direction In the case of, fluid can only apply fluid pressure on the head portion 37 of plug member 30.But, described head portion 37 Surface is designed to be sufficiently small so that common fluid pressure can not overcome the elastic force of elastomeric element 40.Only execute at fluid pressure In the case of adding to bigger first surface 381, check-valves 10 just can be opened.

Fig. 4 shows another view of the injecting assembly 60 of the present invention.Here, injecting assembly 60 inserts and is maintained at drink In the dispensing chamber 90 of material preparation machine.It can be seen that, it is preferable that plug member 30 is provided with the cylindricality master around plug member 30 The sealing device 38 of body setting, more preferably O.This seal member is designed to close relative to upper cavity 12 for lower chamber 11 Envelope, to prevent any fluid from flowing to each other.Thus, can enter in the cavity 12 that elastomeric element 40 is disposed therein without fluid. It is also prevented from dirt and dust has entered the first cavity.

As it has been described above, the helical spring that elastomeric element 40 is e.g. made of metal.This elastomeric element 40 with fluid Can deteriorate in the case of permanent contact.In dry upper cavity 12, the service life of elastomeric element 40 extends.Sealing device 38 is also It is suitable for guiding the plug member 30 motion in body 20.By means of described guiding, the movement of plug member can be constrained to Single shaft moves, the most along a first direction with the movement of contrary second direction.Preferably, moving direction and inlet tube 31 and injection Orientation alignment (i.e. along same axis orientation) of pin 50.

Fig. 5 a is bottom and the perspective view of entry needle 50 of the low portion 20a of body 20, and this entry needle can directly be pacified It is contained on valve outlet port 21 to reduce the downstream dead volume of check-valves 10.

Fig. 5 b is the perspective view of two parts of body.Show the opening 22 in upper part, preferably plug member The pipe 31 of 30 extends through this opening 22.Also show engagement device 26,36, this engagement device is suitable for the top portion of body 20 20b and low portion 20a is divided to connect.

Fig. 6 a is top view, it is shown that the potted component 38 of plug member 30 inserts the side in the low portion 20a of body Formula.Plug member 30 coordinates with the interior shape of body 20, and is the most preferably guided into by sealing device 38 The movement only made on predetermined opposite direction, the preferably first and second directions is possible.

Fig. 6 b shows the side view of the cylindrical seal element 38 of plug member 30.This cylindrical section has from one The prominent pipe 32 in face 34, and have from its another prominent protuberance 35 of opposite face 33.Elastomeric element 40, it is preferably formed from metal Helical spring be wound around around pipe 32.So, it is achieved that the compact Layout of the component in body 20.

Fig. 7 shows the schematic diagram of beverage preparing machine 100, and this beverage preparing machine 100 includes the injection group of the present invention Part 60, this injecting assembly 60 then includes check-valves 10 and the entry needle 50 of the present invention.Beverage preparing machine 100 includes for storing It is used for preparing at least one reservoir of water 70 of the fluid of beverage.Reservoir 70 fluidly connects with heater 80.

Heater 80 receives fluid from reservoir 70, and is configured to the preferred temperature that this fluid is heated to set.Should Temperature by user control or automatically control, can depend on the type of capsule in machine.Therefore, this machine can have use Device in the capsule that detection and identification are inserted.The temperature that the such as microprocessor of the control unit with machine couples can be used Sensor controls temperature.Heater 80 fluidly connects with check-valves 10.

Alternatively, air separator 85 can be connected between heater 80 and check-valves 10.Air separator for from Liquid after heating removes air.Air separator 85 therefore as described in such as WO2009/135899 A1 make air with Fluid separates.Such as, air is made to separate by means of the special service valve arranged through air outlet slit.Airfree fluid is by further It is supplied to check-valves 10.

Check-valves 10 function as described above, and be directly installed on entry needle 50.If wanting beverage, then inject The pin 50 capsule 110 in the dispensing chamber 90 inserting and being maintained at beverage preparing machine 100 is injected.When fluid is expelled to Time in capsule 110, the dispensing in capsule 110 with heating after fluid mix and brewed go out beverage.Can be such as according to inspection The capsule type measured and after the predetermined time amount that automatically sets, add hot-fluid with the beverage ingredient in capsule interacts Body is sent from beverage preparing machine 100 as final beverage.

After prepared by each beverage, it is entry needle according to the unique dead volume in the beverage preparing machine of the present invention Internal capacity.Therefore, bacterial migration is the lowest to the dead volume in beverage preparing machine or the probability that develops wherein.This Outward, preferably can separate with check-valves 10 due to entry needle 50, it is possible to periodically clean or replace, thus reduce further This risk.Beverage preparing machine 100 is therefore safer than beverage preparing machine known in the art.

And, injecting assembly 60 is more compact, because not having fluid line between check-valves 10 and entry needle 50.On additionally, Literary composition has been described for how check-valves 10 self builds closely.Therefore, whole beverage preparing machine can be constructed much smaller with structure.

Claims (9)

1. a check-valves (10), including:

-body (20), described body limits has upper wall (201) and the cylindrical chamber of lower wall (202), wherein:

Described upper wall (201) includes central opening (22), and

Described lower wall (202) has the shoulder (202a) around hole (202b),

The end in described hole (202b) includes central opening (202c) and forms the valve seat of this check-valves,

-the plug member (30) that is contained in body chamber, described plug member includes:

Pipe (31), described pipe has hole (32), and described pipe extends through the central opening (22) of the upper wall of body chamber,

Around the cylindrical seal element (38) of this pipe, described cylindrical seal element body chamber is separated into upper cavity (12) and Lower chamber (11) and by sealed against one another to described upper cavity and lower chamber,

Wherein, the lower surface towards described lower chamber (381) of this cylindrical seal element has the platform around protuberance (35) Shoulder (39), the hole (202b) that described protuberance (35) is configured to fit within the lower wall of body chamber is interior for use as described check-valves Valve member,

Wherein, the hole (32) in the pipe of described plug member is run through described plug member and is extended and occur under body chamber In cavity (11), and

-elastomeric element (40), described elastomeric element is contained in the upper cavity (12) of this body so that by described plug member Protuberance (35) is pressed against on described valve seat.

Check-valves the most according to claim 1 (10), it is characterised in that described elastomeric element (40) is helical spring, should Helical spring is wound around around the pipe through upper cavity (12) of this plug member.

Check-valves the most according to claim 1 and 2 (10), it is characterised in that the hole (32) in the pipe of this plug member goes out Now on the side of the protuberance (35) of this plug member.

Check-valves the most according to claim 1 and 2 (10), it is characterised in that the low portion (20a) of this body and top Partly (20b) is separate part, and this upper part and low portion are connected to each other by engagement device (26,36).

Check-valves the most according to claim 1 and 2 (10), it is characterised in that in the hole (202b) of the lower wall of body chamber Central opening (202c) be designed for the puncture needle (50) of attaching beverage machine (100).

Check-valves the most according to claim 1 and 2 (10), it is characterised in that the pipe (31) of this plug member is designed for The flexible pipe of attaching beverage machine (100).

7. an injecting assembly (60), including:

-check-valves according to any one of claim 1 to 6 (10),

-puncture needle (50), described puncture needle is for penetrating the capsule (110) of beverage ingredient containing, and is used for injecting a fluid into In described capsule (110),

Wherein, on the central opening (202c) in the hole (202b) of the lower wall that described puncture needle (50) is attached to body chamber.

8. a beverage preparing machine (100), including:

-for storing the fluid reservoir (70) of fluid,

-for heating the heater (80) of the fluid received from described fluid reservoir (70),

-injecting assembly according to claim 7 (60), wherein:

-described check-valves (10) connects into and receives fluid from described heater (80), and

-dispensing chamber (90), described dispensing chamber is for receiving and keep the capsule (110) of beverage ingredient containing, and is used for inciting somebody to action It is expelled to the fluid in described capsule (110) as drink dispensing by described injecting assembly (60).

Beverage preparing machine the most according to claim 8 (100), also includes air separator (85), this air separator For removing air from heated fluid in described heater (80), wherein, described check-valves (10) connects into from described Air separator (85) receives the most airfree fluid.