CN101524243A

CN101524243A - Filter holder

Info

Publication number: CN101524243A
Application number: CN200910118757A
Authority: CN
Inventors: 尼克·奥洛林; 雷·科尔金
Original assignee: Sunbeam Corp Ltd
Current assignee: Sunbeam Corp Ltd
Priority date: 2008-03-04
Filing date: 2009-03-04
Publication date: 2009-09-09
Also published as: AU2009200860A1

Abstract

The invention provides a filter holder for an espresso machine. The filter holder includes: a housing defining an upper chamber for accommodating a filter; a flow splitter located between the filter and a base of the housing for splitting a flow of brewed coffee into substantially even first and second streams. The flow splitter includes first and second outlets for respectively receiving and venting said first and second streams respectively, a flow deflector extending from the base of the housing defining first and second channels. The first channel is configured to receive the first stream from the first outlet and deflect the first stream away from the first outlet and the second channel, and the second channel configured to receive the second stream from the second outlet and deflect the second stream away from the second outlet and the first channel.

Description

Filter holder

Technical field

The present invention relates to a kind of filter holder of espresso coffee machines.

Background technology

Espresso is very popular beverage.Espresso is made by espresso coffee machines, and espresso coffee machines forces hot water under high pressure by the ground coffee beans.The ground coffee beans remain in the filter, filter and then remain in the filter holder, and the user of espresso coffee machines can removably be connected to coffee machine with this filter holder and make coffee.

Universal day by day along with espresso, coffee-house, bar and restaurant no longer are the unique owner and the operator of espresso coffee machines at present, many family expenses espresso coffee machines use at home.Further, in order to satisfy the demand, many espresso coffee machines can be produced many cups of coffees from the single filter of coffee grounds simultaneously.

The family expenses demand that increases has caused the demand to espresso coffee machines, promptly not only cheap than business PC, but also to clean in the family and safeguard that the owner of coffee machine does not wish to bear the daily cleaning work of carrying out in order to make machine keep operate as normal easilier at home.

Summary of the invention

In one aspect, the invention provides a kind of filter holder of espresso coffee machines, described filter holder comprises: shell, and it is defined for the last chamber of ccontaining filter; Current divider, it is between the base portion of described filter and described shell, be used for well-done coffee is split into first liquid stream and second liquid stream of approximate equality, described current divider comprises being respectively applied for and receives and discharge that first of described first liquid stream and described second liquid stream exports and second export; Air deflector, it extends and limits first path and alternate path from base portion of described shell, described first passway structure becomes from described first outlet to receive described first liquid stream and described first fluid diversion is become away from described first outlet and the described alternate path, and described alternate path is configured to receive described second liquid stream and described second fluid diversion is become away from described second outlet and described first path from described second outlet.

Described air deflector can be integrally formed with described filter holder.

Described filter holder and described air deflector can integrally casting become the unit of monomer.

Described current divider can have maze-type structure.

Described first outlet and described second outlet can be limited by first nozzle and second nozzle respectively.

Described first nozzle and described second nozzle can form the integrated part of described current divider.

Described current divider and described first nozzle and described second nozzle can be integrally molded into the unit of monomer.

Described current divider can removably remain in the described shell by securing member.

Described current divider can further comprise the jut placed in the middle that limits screwed hole, and described hole is coaxial with the central axis of described filter holder, and wherein said securing member is the screw fastener that is arranged in described screwed hole.

Described screw fastener extends through the recessed opening in the described air deflector.

In described first path and the described alternate path each all is arc, exports downwards and extend out to corresponding first side opening and second side opening from described first outlet and described second.

Alternately, each in described first path and the described alternate path all is a slope shape, exports downwards and extend out to corresponding first side opening and second side opening from described first outlet and described second.

Described first side opening and described second side opening can be formed with radius of curvature less than 1 millimeter lowest edge.

Described lowest edge is to form described radius of curvature less than 1 millimeter by milling.

The base portion near each lowest edge of each path can tilt with at least 15 degree angles.

Description of drawings

Below in conjunction with the following drawings embodiments of the present invention are described, wherein:

Shown in Fig. 1 is exploded perspective view according to the parts of the filter holder of embodiment of the present invention;

Shown in Fig. 2 be the filter holder of Fig. 1 and filter assembling the time side view;

Shown in Fig. 3 be the filter holder of Fig. 1 and filter assembling the time stereogram;

Shown in Fig. 4 A is the top perspective view of the current divider shown in the previous figure;

Shown in Fig. 4 B is the face upwarding stereogram of the current divider shown in the previous figure;

Shown in Fig. 4 C is the vertical view of the current divider shown in the previous figure;

Shown in Fig. 5 is the filter holder of Fig. 2 and the filter sectional view along line A-A;

Shown in Fig. 6 A is the schematic elevational view that is used for producing the milling cutter of beveled edges on the air deflector of the filter holder of Fig. 1;

Shown in Fig. 6 B is the schematic perspective view that is used for producing the milling cutter of beveled edges on the air deflector of the filter holder of Fig. 1.

The specific embodiment

The parts of the embodiment of filter holder 10 of the present invention are at first described with reference to Fig. 1 to 3.

Filter holder 10 comprises handle 14, shell 16, current divider 18, air deflector 20 and two lugs 22.Two lugs 22 are used in use removably filter holder 10 being fixed to espresso coffee machines (not shown) in the mode of bayonet fittings.In the present embodiment, shell 16, air deflector 20 and lug 22 are integrally formed as a monomeric unit, and air deflector 20 extends from the base portion 19 of shell 16.Shell 16, air deflector 20 and lug 22 can for example be formed by brass casting.In alternative embodiment, air deflector 20 can be formed on the shell 16 independently.

Handle 14 is provided with plastics or rubber sleeve so that increase comfort level and friction when hand-held filter holder 10, and handle 14 can be by means of being attached to filter holder 10 such as securing members such as screw or bolt (not shown).If necessary, handle 14 also can be integrally formed with shell 16, air deflector 20 and lug 22.

Shell 16 limits goes up chamber 24, and filter 12 and current divider 18 are contained on this in chamber 24.Current divider 18 removably is fixed on by means of securing member 26 (being stainless steel screw in this embodiment) in the chamber 24 between the base portion 19 of filter 12 and shell 16.The recessed opening 27 that screw 26 passes in the air deflector 20 extends, and is received within the screwed hole placed in the middle 29 that is formed at from the jut that current divider 18 extends.Screwed hole 29 placed in the middle is coaxial with the axis of filter holder 10.

When prepare using filter holder 10, fill up coffee grounds in the filter 12 and be placed in the last chamber 24 of shell 16 (current divider 18 tops).Filter 12 can remain in the shell 16 or utilization keeps releasedly such as the elastic biasing members such as spring (not shown) that are arranged in shell wall by friction (being produced by the design of the relative size of shell 16 and filter 12) releasedly.

In order to help that filter 12 is pulled down from shell 16, the wall that filter 12 is provided with flange 28 and shell 16 is provided with groove 30.When filter 12 is arranged in shell 16, can touch flange 28 so that filter 12 is taken out via groove 30.

Filter 12 is made by stainless steel and is provided with double wall at its base portion.This double wall comprises upper plate 31 that is provided with a plurality of holes 32 and the lower plate 34 that is formed with single hole placed in the middle (not shown).When forcing water through the coffee that keeps in the filter, water passes hole 32 and enters space between upper plate 31 and the lower plate 34, passes through the hole in the lower plate 34 then.So well-done coffee just flows out filter from single point placed in the middle.

Certainly, should be understood that filter holder 10 and filter 12 can be supplied independently.

When filter holder 10 is used to make espresso, has filled up coffee grounds in the filter 12 and be fixed to espresso coffee machines.Espresso coffee machines forces pressurized hot water to pass through coffee grounds, thereby makes well-done coffee flow to current divider 18 by the hole placed in the middle in via hole in the upper plate 31 32 and the lower plate 34 from filter 12.

4A, 4B and 4C are described in further detail current divider 18 below with reference to accompanying drawings.Current divider is provided with the first wall 36 and second wall 38, forms two flow paths that are used for the well-done coffee that receives from filter between these two walls.Arrow 37 and 39 (the easiest in Fig. 4 C see) shows the circuit of this two paths, and this two paths all is provided with and under gravity effect flows through described path to lower inclined plane to allow well-done coffee along the path direction.

Current divider 18 is provided with the last liquid collecting ramp 41 that is limited by wall 36.When filter 12 was in place, alignd in the hole placed in the middle in the lower plate 34 of last liquid collecting ramp 41 and filter 12, thereby the coffee of the filter 12 of flowing through drops on the liquid collecting ramp 41.From last liquid collecting ramp 41 (shown in arrow 37 and 39), well-done coffee flows downward towards middle ramp 43.Up gradient 41 and middle ramp 43 be tilt so that make coffee be split into the liquid stream of two bursts of approximate equalities, wherein one is along the path flow between the

wall

36 and 38 shown in the arrow 37, another strand is along the path flow between the

wall

36 and 38 shown in the arrow 39.From each path that forms between

wall

36 and 38, well-done coffee flow flow on the gug 45, and this gug 45 has certain angle with the other guide openings 40 of coffee flow point and 42.

From opening 40 and 42, well-done coffee flows out current divider 18.In this embodiment, lead respectively two

nozzles

44 and 46 of opening 40 and 42.Nozzle 44 and 46 extends in the air deflector 20.

Be to be understood that from foregoing, current divider 18 forms and makes liquid stream-one liquid stream that the well-done coffee that receives from filter 12 is split into two bursts of approximate equalities flow into first path 48 of air deflector 20 through outlet 40 and nozzle 44 along arrow 37, and another strand liquid stream flows into the alternate path 50 of air deflector 20 through outlet 42 and nozzle 46 along arrow 39.

Current divider 18 is made by the material that is applicable to food of the temperature that can stand well-done coffee.The material that is fit to is a polypropylene.

With reference to Fig. 5, air deflector 20 is formed with two paths 48 and 50.

Path

48 and 50 is formed by

arc base wall

52 and 54, and

sidewall

55A and 55B extend and merge with base portion 19 from this base wall 52 and 54.Base wall 52 tilts downwards and away from nozzle 46 and path 50, and base wall 54 tilts downwards and away from nozzle 44 and path 48 simultaneously.By being arranged in such a

way path

48 and 50, thereby first liquid of the well-done coffee stream and second liquid fail to be convened for lack of a quorum and turn to away from each other direction to make per share liquid stream can both flow into coffee cup or be placed in the analog below the opening of each

path

48 and 50.

Flow to the middle part (splash into cup with flowing out air deflector 20 or analog is opposite) of air deflector 20 in order to prevent the well-done caffeine capillarities that flow out from

path

48 and 50, the

outward flange

56 and 58 of

path

48 and 50 opening part is made the acute angle pattern.This angle helps well-done coffee to flow vertically to leave air deflector 20, and can be around the edge and along the outer surface drippage of air deflector 20.After forging, for example can utilize on milling cutter 60 (or analog) its outer edges shown in Fig. 6 A and 6B angle as described in the formation, thereby provide sharp-pointed side and radius of curvature less than 1 millimeter the minimum release edge that drips.In addition, the base portion of path and the angle of inclination A minimum between the sidewall are that 15 degree are further to prevent capillarity.

Should be appreciated that softer

plastic nozzle

44 and 46 is protected and can be damaged or be out of shape by air deflector 20 being arranged to the integrated part of shell 16 when filter holder 10 is deposited or used.Further; the espresso coffee machines that is threaded onto the filter shell with current divider is different; the integrated current divider of above-mentioned embodiment does not have to introduce additional attachment point, thereby can not accumulate in attachment point and produce potential health and/or cleaning problems because of caffeol and other impurity particle.

Should be understood that invention open and that limit may extend to all alternative combinations of record in text or the accompanying drawing or beyond all doubt two or more single features that draw among the application.All these different combinations all constitute each substituting aspect of the present invention.

Claims

1. the filter holder of an espresso coffee machines, described filter holder comprises:

Shell, it is defined for the last chamber of ccontaining filter;

Current divider, it is between the base portion of described filter and described shell, be used for well-done coffee is split into first liquid stream and second liquid stream of approximate equality, described current divider comprises being respectively applied for and receives and discharge that first of described first liquid stream and described second liquid stream exports and second export

Air deflector, it extends and limits first path and alternate path from base portion of described shell,

Described first passway structure becomes from described first outlet to receive described first liquid stream and described first fluid diversion is become away from described first outlet and the described alternate path, and described alternate path is configured to receive described second liquid stream and described second fluid diversion is become away from described second outlet and described first path from described second outlet.

2. filter holder according to claim 1, wherein, described air deflector and described filter holder are integrally formed.

3. filter holder according to claim 1 and 2, wherein, described filter holder becomes the unit of monomer with described air deflector integrally casting.

4. filter holder according to claim 1, wherein, described current divider has maze-type structure.

5. filter holder according to claim 1, wherein, described first outlet and described second outlet are limited by first nozzle and second nozzle respectively.

6. filter holder according to claim 5, wherein, described first nozzle and described second nozzle form the integrated part of described current divider.

7. according to claim 5 or 6 described filter holders, wherein, described current divider and described first nozzle and described second nozzle are integrally molded into the unit of monomer.

8. filter holder according to claim 1, wherein, described current divider removably remains in the described shell by securing member.

9. filter holder according to claim 8, wherein, described current divider also comprises the jut placed in the middle that limits screwed hole, described hole is coaxial with the central axis of described filter holder, and described securing member is the screw fastener that is arranged in described screwed hole.

10. filter holder according to claim 9, wherein, described screw fastener extends through the recessed opening in the described air deflector.

11. filter holder according to claim 1, wherein, each in described first path and the described alternate path all is arc, exports downwards and extend out to corresponding first side opening and second side opening from described first outlet and described second.

12. filter holder according to claim 1, wherein, each in described first path and the described alternate path all is a slope shape, exports downwards and extend out to corresponding first side opening and second side opening from described first outlet and described second.

13. according to claim 11 or 12 described filter holders, wherein, described first side opening and described second side opening are formed with radius of curvature less than 1 millimeter lowest edge.

14. filter holder according to claim 13, wherein, described lowest edge is to form described radius of curvature less than 1 millimeter by milling.

15. filter holder according to claim 13, wherein, the base portion near each lowest edge of each path tilts with at least 15 degree angles.