CN108125564A - A kind of coffee machine - Google Patents
A kind of coffee machine Download PDFInfo
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- CN108125564A CN108125564A CN201711476282.2A CN201711476282A CN108125564A CN 108125564 A CN108125564 A CN 108125564A CN 201711476282 A CN201711476282 A CN 201711476282A CN 108125564 A CN108125564 A CN 108125564A
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J31/00—Apparatus for making beverages
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J31/00—Apparatus for making beverages
- A47J31/44—Parts or details or accessories of beverage-making apparatus
- A47J31/46—Dispensing spouts, pumps, drain valves or like liquid transporting devices
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J31/00—Apparatus for making beverages
- A47J31/44—Parts or details or accessories of beverage-making apparatus
- A47J31/46—Dispensing spouts, pumps, drain valves or like liquid transporting devices
- A47J31/462—Dispensing spouts, pumps, drain valves or like liquid transporting devices with an intermediate liquid storage tank
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J31/00—Apparatus for making beverages
- A47J31/44—Parts or details or accessories of beverage-making apparatus
- A47J31/54—Water boiling vessels in beverage making machines
- A47J31/56—Water boiling vessels in beverage making machines having water-level controls; having temperature controls
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Apparatus For Making Beverages (AREA)
Abstract
The present invention provides a kind of coffee machine, coffee machine includes：Female boiler, sub- boiler and the water supply installation for supplying cold water, sub- boiler is arranged in female boiler, the water inlet of the water inlet of female boiler and sub- boiler connects respectively with water supply installation, female boiler is equipped with the first heater for heating the water in female boiler, coffee machine further includes the brewing device with water outlet, brewing device connects respectively with water supply installation and sub- boiler, so that the hot water in sub- boiler is mixed with the cold water in water supply installation.Technical scheme of the present invention overcomes the problems, such as that water temperature over-high causes mouthfeel bad when existing coffee maker makes coffee.
Description
Technical field
The present invention relates to coffee machine technical fields, and in particular to a kind of coffee machine.
Background technology
Coffee is liked by its unique taste by consumers in general, and coffee not only convenient but also energy is made using coffee machine
Ensure the quality of coffee, therefore coffee machine is widely used, there are two types of functions for coffee machine generally tool, and one kind is extracted with hot water
Coffee, another kind are to dismiss milk foam using steam.Coffee machine of the prior art has following several：
The first is the coffee machine with single boiler, and the temperature of water is less than 100 DEG C when extracting coffee, if however wanting to generate
Steam must heat the water to 100 DEG C, therefore single boiler coffee machine exists to take into account simultaneously and provides hot water and provide steam
Defect.
Second is the coffee machine with double boiler, and double boiler coffee machine can utilize a boiler to provide hot water, another
A boiler generates steam, although double boiler coffee machine can take into account the function of providing hot water and provide steam, price simultaneously
It is more expensive much than single boiler coffee machine.
The third is the coffee machine with primary-secondary boiler, and primary-secondary boiler cost is cheaply many relative to double boiler, female boiler
Steam and non-extraction hot water is provided, sub- boiler by with the generation heat exchange of female boiler so as to be heated by female boiler, then sub- pot
Hot water in stove, which is sent in constant temperature system, to be continued to heat, and the water after heating can directly infuse coffee.Constant temperature system includes punching
Bubble boiler, heating unit and temperature control device, heating unit are arranged on the bottom for brewing boiler.Cold water is after the preheating of female boiler
Continuing to heat even without heating unit, temperature also can be more than 100 DEG C, which has been more than the optimum temperature of coffee extracted,
And then the coffee mouthfeel that the brewed in hot water using the temperature is caused to come out is bad.
Invention content
It is a primary object of the present invention to provide a kind of coffee machine, to solve the water temperature over-high infused coffee in the prior art
The problem of causing mouthfeel bad.
To achieve the above object, the present invention provides a kind of coffee machine, including：Female boiler, sub- boiler and supply cold water
Water supply installation, sub- boiler are arranged in female boiler, and the water inlet of the water inlet of female boiler and sub- boiler connects respectively with water supply installation
Logical, female boiler is equipped with the first heater for heating the water in female boiler, and coffee machine further includes rushing with water outlet
Bulb apparatus, brewing device connect respectively with water supply installation and sub- boiler, so that cold in the hot water and water supply installation in sub- boiler
Water is mixed.
Further, coffee machine further include the cold water in the hot water and water supply installation in sub- boiler is carried out it is uniformly mixed
Mixing arrangement.
Further, brewing device brews boiler and tea infuser including spaced, brews boiler and sub- boiler, water supply
Device connects, and the water container for brewing boiler and tea infuser is connected by the first water stream channel setting up and down and the second water stream channel
It is logical, it brews boiler, the second water stream channel, water container and the first water stream channel and forms circulation loop, tea infuser is equipped with second
Heating unit, inner roof wall of the inner roof wall higher than water container, secondary heating mechanism and the circulation loop for brewing boiler form mixing
Device, water outlet are arranged on the bottom of water container.
Further, tea infuser includes pedestal and water container, and water container is set on the base, and water outlet connects downwards
Outlet conduit is connected to, one end of the separate water outlet of outlet conduit forms brewing mouth, and outlet conduit is equipped with switch valve.
Further, switch valve is two position three-way valve, and outlet conduit is divided into the confession connected with water outlet by two position three-way valve
Waterpipe and brewing pipeline, the first interface of two position three-way valve are connect with water supply line, the second interface of two position three-way valve and punching
Pipeline connection is boiled, two position three-way valve has the first operating position for connecting first interface with second interface and connects its third
The second operating position that mouth is connected with second interface, the position of brewing mouth are higher than the position of second interface, and two position three-way valve is in
During the second operating position, the water in brewing pipeline passes sequentially through second interface and the discharge of third interface.
Further, tea infuser be equipped with for detect water outlet or close to water outlet hot water temperature temperature pass
Sensor.
Further, water pump is equipped between brewing device and water supply installation.
Further, coffee machine further includes the pressure regulating solenoid valve being arranged in parallel with water pump.
Further, pressure regulating solenoid valve is decompression solenoid valve.
Further, flow control valve is equipped between water pump and brewing device.
Technical solution of the present invention has the following advantages that：In actual use, the water in water supply installation enters female pot
In stove, female boiler is heated by first heater, is heated so as to make to be arranged on the sub- boiler in female boiler, is flowed from sub- boiler
The hot water gone out and the cold water flowed out from water supply installation are mixed in brewing device.By setting brewing device can will be hot
Water and cold water mix so as to avoid the water temperature over-high infused coffee, and then lead to mouthfeel to the arbitrary temp for being suitble to infuse coffee
The problem of bad.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution of the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in being described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, can also be obtained according to these attached drawings other attached drawings.In the accompanying drawings：
Fig. 1 shows the internal structure schematic diagram of coffee machine according to the present invention；
Fig. 2 is pressure changing when infusing coffee using coffee machine of the prior art；
Fig. 3 is pressure changing when infusing coffee using the coffee machine in the application；
Fig. 4 shows the flow diagram of method for infusing coffee according to the present invention.
Wherein, the reference numeral in above-mentioned attached drawing is：
10th, female boiler；11st, steam brewing head；12nd, hot water head；13rd, pressure switch；14th, water level probe；15th, air gauge；
16th, air bleeding valve；17th, safety valve；20th, sub- boiler；30th, first heater；41st, boiler is brewed；411st, water pressure gauge；421st, it is filled with water
Container；4211st, water outlet；422nd, pedestal；4221st, brewing mouth；4231st, first interface；4232nd, second interface；4233rd, third connects
Mouthful；424th, water supply line；425th, brewing pipeline；43rd, the first water stream channel；44th, the second water stream channel；45th, secondary heating mechanism；
51st, the first pipeline section；52nd, the second pipeline section；521st, first check-valve；522nd, flow control valve；53rd, third pipeline section；54th, the 4th pipe
Section；541st, water pump；542nd, entering water electromagnetic valve；55th, the 5th pipeline section；552nd, second check-valve；60th, relief valve.
Specific embodiment
Technical scheme of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's all other embodiments obtained without making creative work, shall fall within the protection scope of the present invention.
A kind of a kind of specific embodiment of coffee machine as shown in Figure 1, including：Female boiler 10, sub- boiler 20 and supply
The water supply installation of cold water, sub- boiler 20 are arranged in female boiler 10, the water inlet of female boiler 10 and the water inlet of sub- boiler 20 point
It is not connected with water supply installation, female boiler 10 is equipped with the first heater 30 for heating the water in female boiler 10, coffee machine
The brewing device with water outlet 4211 is further included, brewing device connects respectively with water supply installation and sub- boiler 20, so that sub- pot
Hot water in stove 20 is mixed with the cold water in water supply installation.
In actual use, the water in water supply installation is entered in female boiler 10, and female boiler 10 is filled by the first heating
30 heating are put, so as to be heated the sub- boiler 20 being arranged in female boiler 10, the hot water that is flowed out from sub- boiler 20 and from confession
The cold water flowed out in water installations is mixed in brewing device.By setting brewing device can be by hot water and cold water mix extremely
It is suitble to the arbitrary temp infused coffee, so as to avoid the water temperature over-high infused coffee, and then the problem of cause mouthfeel bad.
Specifically, coffee machine further include the cold water in the hot water and water supply installation in sub- boiler 20 is carried out it is uniformly mixed
Mixing arrangement.Hot water or cold water can be uniformly mixed by mixing arrangement, and the coffee mouthfeel for brewing out is more preferable.
Specifically, coffee machine further includes PID temperature controllers, and PID temperature controllers are electric with first heater, temperature sensor respectively
Connection, and first heater is controlled to work.
Specifically, brewing device include it is spaced brew boiler 41 and tea infuser, brew boiler 41 and sub- boiler 20,
Water supply installation connects, and brews the water container 421 of boiler 41 and tea infuser and passes through the first water stream channel 43 setting up and down and the
Two water stream channels 44 connect, and brew boiler 41, the second water stream channel 44,421 and first water stream channel 43 of water container and are formed and followed
Loop back path, tea infuser are equipped with secondary heating mechanism 45, brew the inner roof wall of boiler 41 higher than water container 421 inner roof wall,
Secondary heating mechanism 45 and circulation loop form mixing arrangement, and water outlet 4211 is arranged on the bottom of water container 421.Second adds
Thermal 45 works so that and the water temperature around secondary heating mechanism 45 increases, because the density of the density ratio cold water of hot water is small, because
This hot water moves upwards, and passes through the first water stream channel 43 flow direction and brew boiler 41, and the cold water for brewing lower portion thereof at this time passes through
Second water stream channel 44 flows into water container, and is higher than the inner roof wall of water container 421 due to brewing the inner roof wall of boiler 41,
According to the pressure formula of liquid it is found that under isodensity, the height of liquid is higher, bigger to the pressure of bottom surface, therefore first
The pressure that water in boiler 41 is brewed at water stream channel 43 and at the second water stream channel 44 is more than the pressure of water in water container 421,
Therefore the water brewed in boiler 41 also can flow to water container 421 by the first water stream channel 43 and the second water stream channel 44, but
It is that hot water cannot be still mixed thoroughly with cold water at this time, then detect actual water temperature by temperature sensor, and utilize PID temperature
Control the work of instrument control secondary heating mechanism so that actual temperature is consistent with set temperature, can accurately control through the above way
Actual water temperature.
Specifically, boiler is brewed equipped with water pressure gauge 411, and water pressure gauge can measure the hydraulic pressure brewed in boiler, and pass through
With the cooperating of relief valve 60, ensure to brew the hydraulic pressure in boiler in certain range.
Specifically, tea infuser includes pedestal 422 and water container 421, and water container 421 is arranged on pedestal 422, is discharged
Outlet conduit is connected at mouth 4211 downwards, one end of the separate water outlet 4211 of outlet conduit forms brewing mouth 4221, water outlet
Pipeline is equipped with switch valve.The water flowed out from brewing mouth 4221 can infuse coffee, and switch valve can control beating for outlet conduit
On or off is closed.
Specifically, switch valve is two position three-way valve, and outlet conduit is divided into what is connected with water outlet 4211 by two position three-way valve
Water supply line 424 and brewing pipeline 425, the first interface 4231 of two position three-way valve are connect with water supply line 424, two position three-way valve
Second interface 4232 connected with brewing pipeline 425, two position three-way valve have first interface 4231 and second interface 4232 are connected
The first logical operating position and the second operating position for connecting its third interface 4233 with second interface 4232, brewing mouth
4221 position is higher than the position of second interface 4232, when two position three-way valve is in the second operating position, in brewing pipeline 425
Water passes sequentially through second interface 4232 and third interface 4233 is discharged.When two position three-way valve is in the first operating position, be filled with water appearance
Water in device 421 flows to brewing pipeline 425 from water supply line 424, and finally outflow carries out brewing coffee from brewing mouth 4221；Two
When position three-way valve is in the second operating position, the water in water container 421 is flowed to from brewing pipeline 425 by second interface 4232
Third interface 4233 so as to discharge the waste water remained in brewing pipeline 425, avoids two position three-way valve from being in the first work next time
The water temperature that the cold water influence remained in during position in brewing pipeline 425 is infused coffee with water.
Specifically, tea infuser is equipped with passes for detecting the temperature of water outlet 4211 or the water temperature at water outlet 4211
Sensor.Temperature sensor is arranged on water outlet 4211 and is nearby more conducive to the accurate water measured and flowed out from water outlet 4211
Actual temperature.
Specifically, water pump 541 is equipped between brewing device and water supply installation.Water pump 541 can make the pressure rise of water, side
Just it is female boiler water supply, is also convenient for extracting ground coffee in the first predetermined pressure.
Specifically, coffee machine further includes the pressure regulating solenoid valve being arranged in parallel with water pump 541.Pressure regulating solenoid valve can adjust water
Pressure.
Specifically, pressure regulating solenoid valve is decompression solenoid valve.When open decompression solenoid valve and switch off the pump 541 when, decompression electricity
Magnet valve causes the pressure reduction of water, so that the pressure reduction of the water in brewing device, therefore finally flowed from brewing mouth 4221
The pressure reduction of the water gone out.
Specifically, flow control valve 522 is equipped between water pump 541 and brewing device.Flow control valve 522 is conducive to adjust
The flow of water, the flow of the water flowed into brewing device by control can change water temperature.
Specifically, also there is steam brewing head 11, the hot water for cleaning cup that can dismiss milk foam on female boiler 10
First 12, control first heater 30 works pressure switch 13, the water level probe 14 for measuring water level, for measuring female boiler 10
The air gauge 15 of interior air pressure, the air bleeding valve 16 that gas can be discharged and ensure safety valve of the pressure in safe range in female boiler 10
17。
Specifically, coffee machine further includes：First pipeline section 51, the second pipeline section 52 and third pipeline section 53, the one of the first pipeline section 51
End is connected with sub- boiler 20, and one end of the second pipeline section 52 is connected with water supply installation, the first pipeline section 51 and the second pipeline section 52 it is another
One end is connected with third pipeline section 53, and the other end of third pipeline section 53 is connected with brewing device, the heat flowed out from sub- boiler 20
Water and the cold water flowed out from water supply installation flow through third pipeline section 53, so as to which hot water and cold water be facilitated to be mixed in brewing device
It is even.
Specifically, the 54 upper edge water (flow) direction of the 4th pipeline section being connected between water supply installation and female boiler 10 is equipped with water pump
541 and entering water electromagnetic valve 542, the second pipeline section 52 be connected on the 4th pipeline section 54 between water pump 541 and entering water electromagnetic valve 542,
Second pipeline section, 52 upper edge water (flow) direction is equipped with first check-valve 521 and flow control valve 522, and first check-valve 521 prevents water from falling
Stream, flow control valve 522 control the uninterrupted of water.
Specifically, pressure release pipeline section is connected on third pipeline section 53, pressure release pipeline section is equipped with relief valve 60.Opening relief valve can
With draining so that brew the pressure reduction of boiler.
Specifically, the 5th pipeline section 55, the 5th pipeline section are connected on the second pipeline section 52 of the upstream of first check-valve 521
55 connect with sub- boiler 20, and the 5th pipeline section 55 is equipped with second check-valve 552, and second check-valve 552 prevents aqueous reflux, and supply water dress
The cold water put is flowed into from the 5th pipeline section 55 in sub- boiler 20 successively by the 4th pipeline section 54, the second pipeline section 52.
Working method of the coffee machine in actual application is described in detail with reference to Fig. 1：
After coffee machine is powered, water level probe 14 controls water pump 541 to work, and entering water electromagnetic valve 542 is opened, and water pump 541 starts
Work, water supply installation supplies water to female boiler 10 and sub- boiler 20, water pump 541 and into water power after female boiler 10 is intake to ordinary water level
Magnet valve 542 is closed, and when water level probe 14 is detected less than ordinary water level, water pump 541 and entering water electromagnetic valve 542 work, so as to
The water level in female boiler 10 is made to be maintained in the range of ordinary water level；Pressure switch 13 controls first heater 30 to work, the
One heating unit 30 is by heating the water in female boiler 10 so that temperature rise in female boiler 10, when temperature reaches certain temperature
Afterwards, air bleeding valve 16 is opened and discharges exhaust gas, and first heater after reaching certain value because of pressure is avoided just to stop situation about heating
It generates, works on rear heating tube, air bleeding valve 16 is closed, and pot furnace pressure constantly rises, when steam pressure reaches in female boiler
When being about 120 DEG C to 1.1bar both temperature, pressure switch 13 controls first heater to stop heating, when steam in female boiler
When pressure is less than 1.1bar, first heater works on, and temperature is with the temperature raising in female boiler 10 in sub- boiler 20
And increase, the water in sub- boiler 20 is flowed in brewing device so that is brewed the temperature raising in boiler 41, and then is brewed boiler 41
In pressure rise, when brew the pressure in boiler 41 more than 9bar when, relief valve 60 open carry out draining pressure release so that brew
Pressure remains at 9bar in boiler 41.
The course of work infused coffee is as follows：
Different temperature is set according to different ground coffees by temperature control panel；
The moistening stage：Water pump 541 does not work, and two position three-way valve is in the first operating position, the water in water container 421 from
Outflow moistens coffee in brewing mouth 4221, and pressure is reduced to 3bar wherein from 9bar, moistens the time in stage according to need
It can arbitrarily adjust；
The high pressure extraction stage：Water pump 541 and flow control valve 522 are started to work, cold water and sub- boiler in water supply installation
Hot water in 20 mixes in brewing device, and secondary heating mechanism 45 works so that the water temperature around secondary heating mechanism 45 becomes
Height, because the density of the density ratio cold water of hot water is small, therefore hot water moves upwards, and passes through the first water stream channel 43 flow direction and brew
Boiler 41, the cold water for brewing lower portion thereof at this time flow into water container, and due to brewing boiler by the second water stream channel 44
41 inner roof wall is higher than the inner roof wall of water container 421, according to the pressure formula of liquid it is found that under isodensity, the height of liquid
Degree is higher, bigger to the pressure of bottom surface, therefore is brewed in boiler 41 at the first water stream channel 43 and at the second water stream channel 44
The pressure of water be more than water container 421 in water pressure, therefore brew the water in boiler 41 also can be by the first water stream channel 43
Water container 421 is flowed to the second water stream channel 44, but hot water cannot be still mixed thoroughly, then pass through with cold water at this time
Temperature sensor detects actual water temperature, and is worked using PID temperature controllers control secondary heating mechanism so that actual temperature and setting
Temperature is consistent, can accurately control actual water temperature through the above way.Water pump 541 can make the pressure of water reach 9bar when working,
Flow control valve 522 can be such that hydraulic pressure slightly rises, and final water is flowed out with the pressure of 9~10bar to coffee from brewing mouth 4221
Powder is extracted, wherein, the time in high pressure extraction stage can arbitrarily be adjusted；
The low pressure extractive stage：It is depressured solenoid valve to start to work, brewing pressure is made to be reduced to 5~7bar from 9~10bar, it is complete
Into last low pressure extractive, then, two position three-way valve is in the second operating position, and the water in water container passes through from brewing pipeline
Second interface flows to third interface, so as to discharge the waste water remained in brewing pipeline, avoids being in two position three-way valve next time the
The water temperature that the cold water influence remained in during one operating position in brewing pipeline is infused coffee with water.Solenoid valve is depressured by control to set
The pressure in fixed different low pressure extractive stage can set the pressure in different low pressure extractive stages according to the self-characteristic of ground coffee
Power, can be to avoid the hypertonia when latter end extracts so as to low pressure extractive, and then leads to the coffee liquid mouthfeel extracted
It is partially bitter, wherein, the time in low pressure extractive stage can arbitrarily be adjusted.
As shown in figure 4, the method to be made coffee using this coffee maker is described in detail below：
Specifically include following steps：
Ground coffee is moistened using the hot water in brewing device；
The hot water in brewing device extracts the part in ground coffee under the first predetermined pressure；
The hot water in brewing device extracts the rest part of ground coffee under the second predetermined pressure, wherein, the
Two predetermined pressures are less than the first predetermined pressure.The first predetermined pressure is set fully to extract the grease in ground coffee,
Latter end extraction is carried out under two predetermined pressures, is conducive to occur the phenomenon that avoiding excessive extraction that coffee mouthfeel is caused to become bitterness.
Specifically, the first predetermined pressure is in the range of 9~10bar.The hydraulic pressure brewed in boiler remains at 9bar,
Hydraulic pressure is made slightly to fluctuate by the control of flow control valve, finally in the range of 9~10bar, ground coffee is extracted using high pressure
It takes and is conducive to fully extract the grease in ground coffee.
Specifically, the time extracted to the part in ground coffee is in the range of 14~18s.It can by high pressure extraction
The grease in ground coffee fully to be extracted, the mouthfeel for making coffee is more mellow.
Specifically, during being extracted to the rest part in ground coffee, the hydraulic pressure in brewing device is pre- from first
Constant-pressure is down to after the second predetermined pressure and is maintained under the second predetermined pressure, and the second predetermined pressure is 5~6bar.Latter end is adopted
With low pressure extractive, excessive extraction is avoided to cause coffee mouthfeel partially bitter.
Specifically, the time extracted to the rest part of ground coffee is in the range of 0~6s.The low pressure extractive stage
Time is less than the time in high pressure extraction stage, and excessive extraction is avoided to cause coffee mouthfeel partially bitter.
Specifically, during being moistened to ground coffee, the hydraulic pressure in brewing device is down to from the first predetermined pressure
It after third predetermined pressure and is maintained under third predetermined pressure, third predetermined pressure is in the range of 2~4bar, to ground coffee
In a part extracted during, the hydraulic pressure in brewing device is risen to after predetermined pressure simultaneously from third predetermined pressure
It is maintained under first predetermined pressure.Bored steamed journey when moistening process is made coffee similar to hand, can be with during bored steaming
It is contacted so that grease in ground coffee is mild with water, grease is made to be more prone to detach with ground coffee, at the same time in ground coffee
Carbon dioxide suitable can discharge, grease is finer and smoother.
Specifically, the time of moistening is in the range of 3~8s.Moistening process makes the mouthfeel of coffee more mellow.
Specifically, the time of moistening, time for being extracted to the part in ground coffee and its remaining part to ground coffee
The sum of time extracted is divided to be no more than 30s.Can brewing time be determined according to different ground coffees.
Specifically, during moistening and extraction, the temperature of the hot water in brewing device remains unchanged.Add by second
The mutual cooperation of thermal and temperature sensor can remain unchanged the water temperature in brewing device.
The specific steps for brewing espresso coffee are illustrated below：
Set water temperature is 93 DEG C；
The moistening stage：MEBO ribbon gauze is 5s, and the hydraulic pressure brewed in boiler is rapidly reduced to 3bar, and stablize from 9bar
3bar or so；Since hot water stream goes out so that brew the hydraulic pressure in boiler reduces naturally.
The high pressure extraction stage：The first predetermined pressure is set as 9bar, the hydraulic pressure brewed in boiler rapidly rises to from 3bar
9bar, and stablize in 9bar or so, the time of high pressure extraction is set as 15s；Make since the water brewed in boiler is gradually heated by the sonochemical activity
The pressure that must be brewed in boiler constantly rises, and finally stablizes in 9bar.
The low pressure extractive stage：The second predetermined pressure is set as 6bar, the time of low pressure extractive is set as 6s, in the time of 6s
In the range of pressure be reduced to 6bar from 9bar.It is depressured solenoid valve to start to work, reduces brewing pressure, complete last low pressure extraction
It takes.
The coffee machine of process and the application that the coffee machine that the prior art is described below brews espresso coffee brews Italian type coffee
The process of coffee：
Pressure changings of the Fig. 2 for conventional coffee machine of the prior art when brewing espresso coffee, conventional coffee machine
Pressure be constant all the time, in the initial period infused coffee without moistening process, directly ground coffee is extracted by high pressure, is held
It is easier that carbon dioxide is largely discharged, and then the mouthfeel of drinking of coffee is influenced, and still kept in latter end extraction process
9bar pressure easily will extract ground coffee transition, so as to generate bitterness sense.
Fig. 3 is the pressure changing when brewing espresso coffee using the coffee machine of the application, utilizes this coffee machine
The pressure in each stage constantly changes when infusing coffee, and the pressure for moistening the stage is gradually decremented to 3bar from 9bar, similar to hand
The process of bored steaming is carried out when making coffee to ground coffee, can cause the grease in ground coffee is mild to be connect with water during bored steaming
It touches, it is made to be more prone to detach with ground coffee, at the same time the carbon dioxide in ground coffee suitable can be discharged, and grease is more
It is fine and smooth.High pressure extraction staged pressure can fully extract the grease in ground coffee in 9bar or so, the pressure of 9bar.
When extracting coffee to endpiece, the solable matter in ground coffee is fewer and fewer, and the coffee machine in the application can be in this stage
Low pressure extractive is taken, pressure can be reduced to 6bar from 9bar, prevent extraction excessive while ensureing that coffee mouthfeel is complete, do
Go out the espresso coffee of perfect mouthfeel.
Obviously, the above embodiments are merely examples for clarifying the description, and is not intended to limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And the obvious variation thus extended out or
Among changing still in the protection domain of the invention.
Claims (10)
1. a kind of coffee machine, including：Female boiler (10), sub- boiler (20) and the water supply installation for supplying cold water, the sub- boiler
(20) it is arranged in female boiler (10), the water inlet of mother's boiler (10) and the water inlet difference of the sub- boiler (20)
It is connected with the water supply installation, mother's boiler (10) is equipped with the first heating for heating the water in female boiler (10)
Device (30),
It is characterized in that, the coffee machine further includes the brewing device with water outlet (4211), the brewing device respectively with
The water supply installation is connected with the sub- boiler (20), so that in the hot water in the sub- boiler (20) and the water supply installation
Cold water is mixed.
2. a kind of coffee machine according to claim 1, which is characterized in that the coffee machine is further included to the sub- boiler
(20) cold water in hot water and the water supply installation in carries out uniformly mixed mixing arrangement.
3. a kind of coffee machine according to claim 2, which is characterized in that the brewing device includes spaced brew
Boiler (41) and tea infuser, the boiler (41) that brews is connected with the sub- boiler (20), the water supply installation, described to brew pot
The water container (421) of stove (41) and the tea infuser passes through the first water stream channel (43) setting up and down and the second water stream channel
(44) it connects, it is described to brew boiler (41), second water stream channel (44), the water container (421) and first water
Circulation road (43) forms circulation loop, and the tea infuser is equipped with secondary heating mechanism (45), described to brew the interior of boiler (41)
Roof is higher than described in inner roof wall, the secondary heating mechanism (45) and the circulation loop composition of the water container (421)
Mixing arrangement, the water outlet (4211) are arranged on the bottom of the water container (421).
4. a kind of coffee machine according to claim 3, which is characterized in that the tea infuser includes pedestal (422) and described
Water container (421), the water container (421) are arranged on the pedestal (422), are connected downwards at the water outlet (4211)
Be connected to outlet conduit, one end far from the water outlet (4211) of the outlet conduit forms brewing mouth (4221), it is described go out
Waterpipe is equipped with switch valve.
5. a kind of coffee machine according to claim 4, which is characterized in that the switch valve be two position three-way valve, described two
The outlet conduit is divided into the water supply line (424) connected with the water outlet (4211) and brewing pipeline by position three-way valve
(425), the first interface (4231) of the two position three-way valve is connect with the water supply line (424), the two position three-way valve
Second interface (4232) is connected with the brewing pipeline (425), and the two position three-way valve has the first interface (4231)
The first operating position for being connected with the second interface (4232) and by its third interface (4233) and the second interface
(4232) the second operating position of connection, the position of the brewing mouth (4221) are higher than the position of the second interface (4232),
When the two position three-way valve is in second operating position, the water in the brewing pipeline (425) passes sequentially through described second
Interface (4232) and the third interface (4233) discharge.
6. a kind of coffee machine according to claim 3, which is characterized in that the tea infuser be equipped with for detect it is described go out
The temperature sensor of the temperature of the mouth of a river (4211) or the hot water at the water outlet (4211).
7. a kind of coffee machine according to claim 1, which is characterized in that between the brewing device and the water supply installation
Equipped with water pump (541).
8. a kind of coffee machine according to claim 7, which is characterized in that the coffee machine further includes and the water pump
(541) pressure regulating solenoid valve being arranged in parallel.
9. a kind of coffee machine according to claim 8, which is characterized in that the pressure regulating solenoid valve is decompression solenoid valve.
10. a kind of coffee machine according to claim 7, which is characterized in that the water pump (541) and the brewing device it
Between be equipped with flow control valve (522).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201711476282.2A CN108125564B (en) | 2017-12-29 | 2017-12-29 | Coffee machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711476282.2A CN108125564B (en) | 2017-12-29 | 2017-12-29 | Coffee machine |
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| CN108125564A true CN108125564A (en) | 2018-06-08 |
| CN108125564B CN108125564B (en) | 2020-06-30 |
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| CN201711476282.2A Active CN108125564B (en) | 2017-12-29 | 2017-12-29 | Coffee machine |
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| CN109044112A (en) * | 2018-10-30 | 2018-12-21 | 四川爱创科技有限公司 | The water-saving anti-dry method of coffee machine system boot |
| CN109091013A (en) * | 2018-10-30 | 2018-12-28 | 四川爱创科技有限公司 | Coffee machine system boot anti-dry method |
| CN111568187A (en) * | 2020-04-01 | 2020-08-25 | 浙江久康电器有限公司 | Instant-heating constant-temperature direct drinking water device capable of continuously discharging water and control method thereof |
| CN113229717A (en) * | 2021-05-24 | 2021-08-10 | 大连富士冰山自动售货机有限公司 | Italian coffee brewing pipeline system for automatic vending coffee machine |
| CN115381290A (en) * | 2022-08-31 | 2022-11-25 | 广东顺德科锐玛电器有限公司 | Sub-saturated type brewing head |
| CN115919152A (en) * | 2023-03-10 | 2023-04-07 | 广东顺德科锐玛电器有限公司 | Boiler multiple heating and pressure changing system of coffee machine |
| CN116250722A (en) * | 2023-05-15 | 2023-06-13 | 广东顺德科锐玛电器有限公司 | Coffee machine |
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| CN108125564B (en) | 2020-06-30 |
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