CN109645826B - Coffee tea machine - Google Patents
Coffee tea machine Download PDFInfo
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- CN109645826B CN109645826B CN201910076655.XA CN201910076655A CN109645826B CN 109645826 B CN109645826 B CN 109645826B CN 201910076655 A CN201910076655 A CN 201910076655A CN 109645826 B CN109645826 B CN 109645826B
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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
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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
- A47J31/54—Water boiling vessels in beverage making machines
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- Food Science & Technology (AREA)
- Apparatus For Making Beverages (AREA)
Abstract
The invention relates to the technical field of beverage processing, in particular to a coffee tea machine, wherein a double-layer water liner comprises an outer water liner and an inner water liner, a water inlet hopper is arranged at the top of the outer water liner, a water inlet is arranged at the top of the inner water liner, the water inlet hopper extends into the water inlet of the inner water liner, the inner water liner is provided with a first water outlet hole, one side of the inner water liner is provided with a water outlet groove, the first water outlet hole is communicated with the water outlet groove, the top end of the water outlet groove is communicated with a water outlet pipe, a gap is arranged between the outer water liner and the inner water liner, and the gap is communicated with a second water outlet hole; the heating assembly comprises a heating tube, a main control board and a metal bottom plate, the heating tube is arranged on the metal bottom plate, the main control board is arranged below the metal bottom plate, the main control board is electrically connected with the heating tube, the inner water liner and the outer water liner are both arranged on the metal bottom plate, and the heating tube is arranged in the inner water liner; the valve assembly includes a safety valve and a steam valve. The invention can effectively provide proper water temperature and pressure, so that the coffee tea machine is suitable for brewing coffee and tea.
Description
Technical Field
The invention relates to the technical field of beverage processing, in particular to a coffee and tea product machine.
Background
Coffee machines for cooking coffee are commercially available in two general categories, american coffee and italian.
The American coffee machine is characterized in that a large pile of coffee powder is placed in a filtering paper cup, hot water is dripped on the coffee powder, coffee flavor permeates into water, and the coffee powder is dripped through filtering paper, so that the American coffee machine is slightly light in flavor, slow in process and waste. Due to the slow water flow, the coffee machine can also be used for brewing tea, but the water temperature is not high enough to develop tea flavor. Italian coffee machine, firstly put coffee powder in a small cup or capsule, use a water pump to send water to a heater for heating, then inject hot water into the coffee powder under high pressure to force out coffee taste, generally the water pressure reaches over 9 atmospheric pressure (Bar), the water temperature is high, the concentration of the processed coffee is very high, but the mode of cooking with high water pressure is not suitable for processing tea products of tea leaves, and is easy to have bitter taste.
Disclosure of Invention
In view of the above-mentioned deficiencies of the prior art, it is an object of the present invention to provide a coffee and tea maker that is effective in providing a suitable water temperature and pressure, such that the coffee and tea maker is suitable for brewing coffee and tea.
The technical purpose of the invention is realized by the following technical scheme: a coffee tea machine comprises a machine base, a machine body, a double-layer water container, a heating assembly, a water outlet pipe and a valve assembly;
the machine body is arranged on the machine base and comprises a machine shell, a top cover hinged to the machine shell and a placing groove for placing coffee powder capsules, the water outlet pipe is communicated with the placing groove, and a rubber plug is arranged on the lower surface of the top cover;
the double-layer water container is arranged in the shell and comprises an outer water container and an inner water container arranged in the outer water container, a water inlet hopper is arranged at the top of the outer water container, a water inlet is arranged at the top of the inner water container, the water inlet hopper extends into the water inlet of the inner water container, the water inlet hopper can be matched with the rubber plug in an inserted manner, a first water outlet hole is formed in the side wall, close to the bottom, of the inner water container, a vertically arranged water outlet groove is formed in one side of the inner water container, a second water outlet hole is formed in the side wall, close to the bottom, of the water outlet groove, the first water outlet hole is communicated with the water outlet groove through the second water outlet hole, the top end of the water outlet groove is communicated with the water outlet pipe, a gap is formed between the outer water container and the inner water container, and the gap is communicated with the second water outlet hole;
the heating assembly comprises a heating tube, a main control board and a metal bottom board, the main control board is used for controlling the voltage of the heating tube, the metal bottom board is arranged on the base, the heating tube is arranged on the metal bottom board, the main control board is arranged below the metal bottom board and positioned on the base, the main control board is electrically connected with the heating tube, the inner water liner and the outer water liner are both arranged on the metal bottom board, and the heating tube is arranged in the inner water liner;
the valve component comprises a safety valve arranged at the top of the outer water container and a steam valve arranged at the top of the outer water container; the safety valve is communicated with the inside of the outer water container, and the steam valve is communicated with the inside of the outer water container.
By adopting the technical scheme, when the coffee machine is used, a user opens the top cover firstly and pours cold water into the water inlet of the inner water liner, when water in the inner water liner reaches a certain amount, the user continues to add water into the inner water liner, so that the cold water flows into a gap between the inner water liner and the outer water liner through the first water outlet hole and the second water outlet hole, when the water in the gap between the outer water liner and the inner water liner reaches a certain amount, the user closes the top cover, the rubber plug on the top cover blocks the water inlet hopper of the outer water liner, and further blocks the water inlet of the inner water liner, the user enables the main control board to control the heating tube to heat the cold water in the inner water liner, the boiled water in the inner water liner generates steam, the steam is accumulated at the top of the outer water liner, the steam overflows from the steam valve to the outer water liner, the steam is more and more along with the steam, when the steam rushes into the steam valve, the double-layer inner water liner is changed into a sealing state by the steam valve, the double-layer inner water liner is continuously increased, when the water in the inner water liner is boiled, steam is accumulated at the top of the outer water liner, the temperature of the water in the gap between the inner water liner and the outer water liner is lower than that of the water in the inner water liner, when the air pressure of the steam is increased to 1.5 to 2.0 atmospheric pressure (Bar), the boiling water in the inner water liner is extruded out from the first water outlet hole to the water outlet groove by the air pressure, meanwhile, the water between the inner water liner and the outer water liner is driven to enter the water outlet groove from the second water outlet hole in the process of entering the water outlet groove, the water in the inner water liner is mixed with the water in the gap between the inner water liner and the outer water liner, so that the temperature of the water in the water outlet groove is reduced to a certain temperature, at the moment, the water in the water outlet groove flows to the coffee powder capsule in the accommodating groove through the water outlet pipe, and the water is suitable for making coffee and tea, so that the coffee tea machine can make coffee and tea.
Preferably, the cross-sectional area of the opening of the second outlet hole of the outlet channel is between 5 and 7 square millimeters.
By adopting the technical scheme, the cross section area of the hole opening of the second water outlet hole of the water outlet groove is between 5 square millimeters and 7 square millimeters, so that water at 100 ℃ and water at 60 ℃ are mixed to form water at 84 ℃ to 88 ℃, and the water in the temperature range is suitable for brewing coffee and tea.
Preferably, the inner water liner and the outer water liner are both cylindrical plastic pieces.
By adopting the technical scheme, the inner water liner and the outer water liner are both cylindrical plastic pieces, and the heat transfer performance of the plastic pieces is smaller than that of the metal pieces, so that the temperature of water in the gap between the inner water liner and the outer water liner is about 60 ℃, and the effect that the water at 60 ℃ in the gap between the inner water liner and the outer water liner and the boiling water of the inner water liner are mixed into the water at 84-88 ℃ is realized.
Preferably, the heating assembly further comprises a first temperature sensor and a second temperature sensor, the first temperature sensor is arranged on the water outlet pipe, the second temperature sensor is arranged on the lower surface of the metal base plate and located below the heating pipe, the first temperature sensor is electrically connected with the main control board, and the main control board is electrically connected with the second temperature sensor.
By adopting the technical scheme, when water between the inner water container and the outer water container is mixed with water in the inner water container, the mixed water flows into the water outlet groove and flows into the water outlet pipe from the water outlet groove, the mixed hot water flows through the first temperature sensor in the process of flowing out of the water outlet pipe from the water outlet pipe, the first temperature sensor sends a signal to the main control board when detecting that hot water flows out of the water outlet pipe, the main control board controls the voltage of the heating pipe to be reduced, the heating power of the heating pipe is further reduced, and the phenomenon that the hot water in the water outlet pipe is sprayed suddenly when the hot water flows out of the water outlet pipe due to overlarge steam pressure in the double-layer water container is avoided; after all hot water in the inner water container is discharged, the heating tube still generates heat and is in a dry-burning state, the second temperature sensor detects the heat of the metal bottom plate and sends a signal to the main control board, and the main control board receives the signal and cuts off the power supply, so that the inner water container is prevented from being in the dry-burning state and damaging the inner water container.
Preferably, the heating tube is in a roll shape.
Through adopting above-mentioned technical scheme, the heating tube is web-like, saves the occupation space of heating tube to the inner bag of water on the one hand, and the area of contact of the water of increase inner bag and heating tube is favorable to improving heating efficiency simultaneously.
Preferably, a silica gel ring is arranged between the metal bottom plate and the bottoms of the inner water container and the outer water container.
Through adopting above-mentioned technical scheme, because inner water courage and outer water courage all are the working of plastics, the silica gel ring sets up separation heat and conducts inner water courage and outer water courage department from the metal soleplate, and then prevents inside and outside water courage rapid aging, and then prolongs the life of inside and outside water courage.
Preferably, a cylindrical metal casing is arranged in the inner water container, the metal casing is used for covering the heating tube, the bottom of the metal casing is fixedly arranged on the metal bottom plate, and a plurality of first liquid inlet holes are formed in the side wall of the metal casing.
By adopting the technical scheme, because all hot water in the double-layer water liner is discharged to the period of time of turning off the power supply, the double-layer water liner is in a dry-burning state, the heat of the heating tube can be radiated out in a large quantity, the metal housing can be used for blocking and separating the heat radiation and falling on the inner water liner, the inner water liner and the outer water liner are excessively heated and damaged, and meanwhile, the heating efficiency of the heating tube on the water in the inner water liner can be further improved.
Preferably, a plurality of second liquid inlet holes are formed in the top of the metal housing, and the second liquid inlet holes are circumferentially arranged.
Through adopting above-mentioned technical scheme, the top of metal casing is provided with a plurality of second feed liquor hole, and the second feed liquor hole is the circumference and arranges the setting, pours into the in-process of inner water courage into from the water inlet of inner water courage when user's water, and water also can be followed in the second feed liquor hole of metal casing flows into the metal casing, is favorable to improving the water intake efficiency of inner water courage.
Preferably, the steam valve comprises a cylindrical valve body and a spherical valve core, the valve core is positioned in the valve body, the valve core can move up and down in the valve body, and when the air pressure of the double-layer water container reaches a certain value, the valve core can block the air outlet of the valve body.
By adopting the technical scheme, the boiled water in the inner water container generates steam, the steam is accumulated at the top of the water container and overflows out of the outer water container from the steam valve, and as the steam is more and more, the steam rushes out of the steam valve, the valve core in the valve body is pushed upwards to block the air outlet, so that the double-layer water container is changed into a sealed state; after the double-layer water container is cooled down, the steam pressure in the double-layer water container is smaller than the atmospheric pressure, and the valve core in the valve body falls off at the moment, so that the steam valve returns to a normally open state.
Preferably, the valve core is glass beads.
Through adopting above-mentioned technical scheme, because the case in the steam valve contacts with the steam for a long time, the glass pearl is favorable to preventing that the case from rustting, and on the other hand, compare in the steel ball, the weight of glass pearl is less for steam pushes the gas outlet of valve body with the case more easily.
In conclusion, the invention has the following beneficial effects:
1. when the air pressure of steam is increased to 1.5 to 2.0 atmospheric pressure (Bar), the boiling water in the inner water liner is extruded out from the first water outlet hole to the water outlet groove by the air pressure, meanwhile, the water between the inner water liner and the outer water liner is driven to enter the water outlet groove from the second water outlet hole in the process that the boiling water enters the water outlet groove, the water in the inner water liner is mixed with the water in the gap between the inner water liner and the outer water liner, so that the temperature of the water in the water outlet groove is reduced to a certain temperature, at the moment, the water in the water outlet groove flows to the coffee powder capsules in the accommodating groove through the water outlet pipe, and the hydration is suitable for making coffee and tea products;
2. the heating tube is in a roll shape, so that on one hand, the occupied space of the heating tube for the inner water container is saved, and meanwhile, the contact area between the water in the inner water container and the heating tube is increased, and the heating efficiency is improved;
3. because the case in the steam valve contacts with the steam for a long time, the glass pearl is favorable to preventing that the case from rustting, and on the other hand, compare in the steel ball, the weight of glass pearl is less for steam pushes the gas outlet of valve body to the case more easily.
Drawings
FIG. 1 is a schematic structural view of a coffee and tea maker according to an embodiment of the present invention;
FIG. 2 is a schematic view of the construction of the coffee maker with the top cover open according to the embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a double-layer water tank in an embodiment of the invention;
FIG. 4 is a partial sectional view of the double-layered water bladder according to the embodiment of the present invention;
FIG. 5 is an enlarged view of portion A of FIG. 4;
FIG. 6 is a partial sectional view of the outlet channel in an embodiment of the invention;
FIG. 7 is an enlarged view of portion B of FIG. 6;
FIG. 8 is a partial sectional view of the steam valve in the embodiment of the present invention;
fig. 9 is a schematic structural view of a metal case in an embodiment of the present invention.
Reference numerals: 1. a machine base; 101. a placing seat; 2. a body; 201. a housing; 202. a top cover; 203. a placement groove; 204. a rubber plug; 205. an observation window; 3. a double-layer water liner; 31. an outer water bladder; 311. scale lines; 32. an inner water liner; 321. a first water outlet; 33. a water inlet hopper; 34. a water outlet groove; 341. a second water outlet; 4. a water outlet pipe; 5. a heat generating tube; 6. a metal base plate; 61. a silica gel ring; 7. a safety valve; 8. a steam valve; 81. a valve body; 82. a valve core; 83. a first connecting pipe; 84. a second connecting pipe; 9. a first temperature sensor; 10. a metal housing; 11. a first liquid inlet hole; 12. a second liquid inlet hole; 121. a baffle plate.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
A coffee and tea maker is used for making coffee and tea. Referring to fig. 1 to 3, the coffee and tea making machine includes a machine base 1, a machine body 2, a double-layered water tank 3 (combined with fig. 4), a heating assembly capable of heating water in the double-layered water tank 3, a water outlet pipe 4 and a valve assembly.
Referring to fig. 1 and 2, a holder 101 for holding a cup is provided on the housing 1. The machine body 2 is arranged on the machine base 1, and the machine body 2 comprises a machine shell 201, a top cover 202 hinged to the machine shell 201 and a placing groove 203 for placing coffee capsules or tea capsules. The lower surface of the top cover 202 is provided with a rubber plug 204. The water outlet pipe 4 is located in the top cover 202, one end of the water outlet pipe 4 can be communicated with the placing groove 203, the lower end of the placing groove 203 is connected with a liquid outlet pipe (not shown in the figure), and the liquid outlet pipe is located right above the placing seat 101. When coffee or tea needs to be brewed, the water outlet pipe 4 penetrates into the coffee capsules in the placing groove 203, water in the water outlet pipe 4 fills the capsules to form coffee, and finally the coffee can flow out through the water outlet pipe.
Referring to fig. 2, 3 and 4, the double-layered water tank 3 is disposed in the cabinet 201 of the machine body 2. Wherein, double-deck water container 3 includes outer water container 31 and locates the inner water container 32 in the outer water container 31, inner water container 32 is cylindric working of plastics with outer water container 31, outer water container 31 top is provided with into water fill 33, the top of inner water container 32 is provided with the water inlet (for marking out in the picture), the bottom of intaking fill 33 extends to in the water inlet of inner water container 32, when covering top cap 202, it can with plug 204 grafting cooperation to intake fill 33, plug 204 on the top cap 202 will intake and fight 33 and plug up this moment.
Referring to fig. 4 and 5, the bottom of the inner bladder 32 is provided with a first outlet hole 321, the cross-sectional area of the first outlet hole 321 of the inner bladder 32 ranges from 65 mm to 70 mm, and in this embodiment, the cross-sectional area of the first outlet hole 321 is preferably 67.8 mm.
Referring to fig. 6 and 7, a vertically arranged water outlet groove 34 is arranged on one side of the inner water container 32, a second water outlet hole 341 is arranged on the side wall of the water outlet groove 34 close to the bottom end, and the first water outlet hole 321 is communicated with the bottom end of the water outlet groove 34 through the second water outlet hole 341; the top end of the water outlet groove 34 is communicated with the water outlet pipe 4. A gap is arranged between the outer water liner 31 and the inner water liner 32, and the gap is communicated with the second water outlet hole 341. In this embodiment, the cross-sectional area of the second outlet hole 341 of the outlet channel 34 is between 5 mm and 7 mm, and the cross-sectional area of the second outlet hole 341 is preferably 6 mm.
As shown in fig. 1 and 3, the outer water container 31 is a transparent plastic member, the outer wall of the outer water container 31 is provided with scale lines 311, and meanwhile, the casing 201 is provided with an observation window 205 at a position corresponding to the scale lines 311 of the outer water container 31, and the observation window 205 is provided for a worker to check the water level condition of the gap between the inner water container 32 and the outer water container 31.
In the process of adding water to the inner water container 32 by the user, after the water of the inner water container 32 is filled, because the user continues to add water, the water of the inner water container 32 is injected into the gap between the outer water container 31 and the inner water container 32 through the first water outlet 321 and the second water outlet 341, at the moment, the user can observe the water level height in the gap between the outer water container 31 and the inner water container 32 through the observation window 205, when the water in the gap between the outer water container 31 and the inner water container 32 reaches a certain water level, the user can stop adding water, and the top cover 202 is closed, so that the rubber plug 204 blocks the water inlet hopper 33, and further the water inlet of the inner water container 32 is sealed. At this time, the heating assembly heats the water in the inner bladder 32, during the water heating process of the inner bladder 32, the water in the gap between the inner bladder 32 and the outer bladder 31 transfers heat gradually against the hot water in the inner bladder 32, because the heat transfer performance of the plastic part is smaller than that of the metal part, the temperature of the water in the gap between the inner bladder 32 and the outer bladder 31 is far lower than that of the water in the inner bladder 32, when the water in the inner bladder 32 is heated to 100 ℃, the water in the gap between the inner bladder 32 and the outer bladder 31 reaches 60 ℃, because the sectional area of the orifice of the first water outlet hole 321 of the inner bladder 32 ranges from 65 square millimeters to 70 square millimeters, and the sectional area of the orifice of the second water outlet hole 341 of the water outlet groove 34 ranges from 5 square millimeters to 7 square millimeters, the arrangement is such that the 100 ℃ water and the 60 ℃ water are mixed to form 84 ℃ to 88 ℃ water, the water that is brewed in this temperature range is suitable for brewing coffee or tea. Most preferably, when the first outlet hole 321 has a cross-sectional area of the hole of 67.8 mm and the second outlet hole 341 preferably has a cross-sectional area of 6 mm, the water at the temperature of 100 degrees celsius and the water at the temperature of 60 degrees celsius are mixed to form the water at the temperature of 86 degrees celsius, which is most suitable for brewing coffee or tea.
Referring to fig. 4 and 6, the heating assembly includes a heating tube 5, a main control board (not shown) for controlling the voltage of the heating tube 5, and a metal base plate 6, the metal base plate 6 is disposed on the base 1, and the heating tube 5 is fixed on the metal base plate 6 by welding. The main control board is arranged on the machine base 1 and is positioned below the metal bottom plate 6. The main control board is electrically connected with the heating tube 5. The inner water container 32 and the outer water container 31 are both arranged on the metal base plate 6, and a silica gel ring 61 is arranged between the bottom of the metal base plate 6 and the bottom of the inner water container 32 and the bottom of the outer water container 31, because the inner water container 32 and the outer water container 31 are both plastic pieces, the silica gel ring 61 is arranged to be beneficial to conduction of separation heat to the inner water container 32 and the outer water container 31 from the metal base plate 6, the ageing speed of the inner and outer water containers 31 is delayed, and the service life of the inner and outer water containers 31 is prolonged. The heating tube 5 is arranged in the inner water liner 32, and the heating tube 5 is in a roll shape, so that the occupied space of the heating tube 5 for the inner water liner 32 is saved, meanwhile, the contact area of the water of the inner water liner 32 and the heating tube 5 is increased, and the heating efficiency is improved. The heating assembly further comprises a first temperature sensor 9 and a second temperature sensor (not marked in the figure), the first temperature sensor 9 is arranged on the water outlet pipe 4, the second temperature sensor is arranged on the lower surface of the metal base plate 6 and located below the heating pipe 5, the first temperature sensor 9 is electrically connected with the main control board, and the main control board is electrically connected with the second temperature sensor. The periphery of the metal bottom plate 6 is arranged in a flanging way, so that the inner water liner 31, the outer water liner 31 and the heating tube 5 are combined and connected into a whole. In addition, the heating element further includes a thermal fuse (not shown) capable of sensing overheating caused by abnormal operation of the heating element, thereby cutting off the circuit to prevent a fire.
When water at 60 ℃ in the gap between the inner water liner 32 and the outer water liner 31 and water at 100 ℃ in the inner water liner 32 flow into and out of the water outlet groove 34, the water at 60 ℃ and the water at 100 ℃ in the inner water liner 32 are mixed in the water outlet groove 34 and flow into the water outlet pipe 4 from the water outlet groove 34; when the mixed hot water flows out of the water outlet pipe from the water outlet pipe 4, the mixed hot water flows through the first temperature sensor 9, the first temperature sensor 9 sends a signal to the main control board when detecting that hot water flows out of the water outlet pipe 4, the main control board controls the voltage of the heating pipe 5 to be reduced, the heating power of the heating pipe 5 is further reduced, and the phenomenon that the hot water of the water outlet pipe 4 flows out of the water outlet pipe 4 and is sprayed suddenly due to overlarge steam pressure in the double-layer water liner 3 is avoided; after all the hot water in the inner water container 32 is discharged, the heating tube 5 still generates heat and becomes a dry-burning state, the second temperature sensor detects the heat of the metal bottom plate 6 and sends a signal to the main control board, and the main control board receives the signal and cuts off the power supply at the moment, so that the inner water container 32 is prevented from being damaged due to the dry-burning state.
Referring to fig. 3, the valve assembly includes a safety valve 7 provided at the top of the outer water container 31 and a steam valve 8 provided at the top of the outer water container 31. The safety valve 7 and the steam valve 8 are both vertically arranged. The safety valve 7 is connected to the inside of the outer water bladder 31 through a vertically disposed first connection pipe 83, and the steam valve 8 is connected to the inside of the outer water bladder 31 through a vertically disposed second connection pipe 84. When the coffee maker is in the non-operating state, the steam valve 8 is in a normally open state.
Referring to fig. 6 and 8, the steam valve 8 includes a valve body 81 having a cylindrical shape and a valve element 82 having a spherical shape, the valve element 82 is located in the valve body 81, and a center line of an air outlet of the valve body 81 coincides with a center line of the valve body 81. The valve core 82 can move up and down in the valve body 81 to seal the air outlet of the valve body 81, and when the air pressure in the double-layer water container 3 reaches a certain value, the valve core 82 can move up and down to block the air outlet of the valve body 81. Specifically, the valve core 82 is a glass bead, the spherical diameter of the valve core 82 is between 3.8 mm and 5.6 mm, in this embodiment, the spherical diameter of the valve core 82 is preferably 4.7 mm, so that on one hand, when the air pressure in the inner water bladder 32 reaches a certain value, the pressure of the water vapor in the outer water bladder 31 rushing into the valve body 81 of the steam valve 8 is enough to make the valve core 82 block the air outlet of the valve body 81. In addition, the aperture of the air outlet of the valve body 81 is between 2.5 mm and 3.5 mm, in this embodiment, the aperture of the air outlet of the valve body 81 is preferably 3.1 mm, it is ensured that when the air pressure in the double-layer water container 3 does not reach a certain value, the steam in the outer water container 31 can be discharged through the upper end pipe orifice of the second connecting pipe 84, and further the upper end pipe orifice of the second connecting pipe 84 of the valve element 82 is jacked up, at this time, the steam can be discharged from the air outlet of the valve body 81, when the steam pressure in the double-layer water container 3 reaches a certain value, a large amount of steam continues to jack up the valve element 82 through the second connecting pipe 84, so that the valve element 82 moves upward and blocks the air outlet of the valve body 81. The caliber of the second connection pipe 84 is between 2.5 mm and 3 mm, in this embodiment, the caliber of the second connection pipe 84 is preferably 2.7 mm, and after the inner and outer water bladders 31 are cooled down, the valve core 82 in the valve body 81 drops to the orifice of the second connection pipe 84, and since the orifice of the second connection pipe 84 is smaller than the spherical diameter of the valve core 82, the valve core 82 does not separate from the valve body 81.
When the water that inner water courage 32 was boiled produces steam, gather at outer water courage 31 top, the atmospheric pressure of steam this moment is with case 82 jack-up, make case 82 break away from the mouth of pipe of second connecting pipe 84 upper end, the steam of outer water courage 31 overflows outside outer water courage 31 from steam valve 8 through second connecting pipe 84 this moment, when atmospheric pressure in double-deck water courage 3 reaches a definite value, steam promotes case 82 and can make case 82 plug up the gas outlet of valve body 81, this kind of steam valve 8's simple structure, the staff of being convenient for overhauls steam valve 8, reduce steam valve 8's manufacturing cost simultaneously. Meanwhile, because the valve element 82 in the steam valve 8 is in contact with the steam for a long time, the valve element 82 is set to be a glass bead, which is beneficial to preventing the valve element 82 from rusting, and meanwhile, compared with the use of a steel ball as the valve element 82, the glass bead has smaller weight as the glass bead of the valve element 82, so that the valve element 82 is pushed to the air outlet of the valve body 81 by the steam more easily.
Referring to fig. 6 and 9, a cylindrical metal casing 10 is disposed in the inner water container 32, the metal casing 10 is used for covering the heating tube 5, the bottom of the metal casing 10 is fixedly disposed on the metal bottom plate 6 by welding, a plurality of first liquid inlet holes 11 are disposed on a side wall of the metal casing 10 close to the bottom, in this embodiment, six first liquid inlet holes 11 are disposed, a cross-sectional area of an orifice of each first liquid inlet hole 11 is between 24 square millimeters and 26 square millimeters, in this embodiment, a cross-sectional area of an orifice of each first liquid inlet hole 11 is preferably 25.1 square millimeters, on one hand, water in the inner water container 32 can enter the metal casing 10, and on the other hand, under the condition that a blocking effect of the metal casing 10 on thermal radiation is ensured, a water inlet rate of the metal casing 10 is improved.
Referring to fig. 6 and 9, the top of the metal housing 10 is provided with a plurality of second liquid inlet holes 12, the second liquid inlet holes 12 are in a strip shape, and the plurality of second liquid inlet holes 12 are arranged circumferentially, in this embodiment, eight second liquid inlet holes 12 are provided, meanwhile, a strip-shaped blocking piece 121 is provided in each second liquid inlet hole 12, one side of the blocking piece 121 is fixedly arranged on the hole wall of the second liquid inlet hole 12, the other side of the blocking piece 121 is recessed towards the direction in the metal housing 10 and has a water inlet channel with the second liquid inlet hole 12, so that the water inlet rate of the metal housing 10 is further increased without affecting the blocking effect of the heat radiation of the metal housing 10 on the heating tube 5.
The specific working process is as follows:
when the coffee maker is used, a user opens the top cover 202 first, cold water is poured into the water inlet hopper 33 of the outer water liner 31, and the cold water is guided into the inner water liner 32 by the water inlet hopper 33. When the water in the inner water container 32 reaches a certain amount, because the user continues to add water to the inner water container 32, so that cold water flows into the gap between the inner water container 32 and the outer water container 31 through the first water outlet 321 and the second water inlet 341 of the inner water container 32, in the process, the user can observe the water level in the gap between the inner water container 31 and the outer water container 31 through the observation window 205, when the water in the gap between the outer water container 31 and the inner water container 32 reaches a certain water level, the user stops adding water and closes the top cover 202, the rubber plug 204 on the top cover 202 plugs the water inlet hopper 33 of the outer water container 31 at the moment, and further plugs the water inlet of the inner water container 32.
Next, the user switches on the power supply, so that the main control board controls the heating tube 5 to heat the cold water in the inner water container 32, the water in the inner water container 32 can be directly heated with the heating tube 5, the water in the gap between the inner and outer water containers 31 is slowly transferred by the water in the inner water container 32, the heating speed is slow, and the temperature rise is slow. The boiled water in the inner water container 32 generates steam, the steam is accumulated on the top of the outer water container 31 and overflows out of the outer water container 31 from the steam valve 8, the steam rushes towards the steam valve 8 along with the increase of the steam, at the moment, the steam valve 8 changes the double-layer water container 3 into a sealed state, the steam pressure in the double-layer water container 3 is continuously increased, at the moment, the steam is accumulated on the top of the outer water container 31 after the water in the inner water container 32 is boiled, at the moment, the temperature of the water in the gap between the inner water container 32 and the outer water container 31 is about 60 ℃, when the air pressure of the steam is increased to 1.5 to 2.0 atmospheric pressure, the air pressure in the inner water container 32 extrudes the water in the inner water container 32 to the water outlet groove 34 from the first water outlet 321, and simultaneously drives the water between the inner water container 32 and the outer water container 31 to enter the water outlet groove 34 from the second water outlet hole 341. In the water outlet groove 34, water at 100 ℃ in the inner water container 32 is mixed with water at 60 ℃ in a gap between the inner water container 31 and the outer water container 31, so that the temperature of the water in the water outlet groove 34 is reduced to 86 ℃.
At this time, water in the water outlet groove 34 flows to the coffee powder capsule in the accommodating groove through the water outlet pipe 4, the water is just suitable for making coffee and tea, as the 86-DEG C hot water passes through the first temperature sensor 9 when flowing through the water outlet pipe 4, the first temperature sensor 9 sends a signal to the main control board when detecting that the hot water flows, the main control board controls the voltage of the heating pipe 5 to be reduced, so that the heating power of the heating pipe 5 is reduced, and the phenomenon that the hot water in the water outlet pipe 4 is sprayed violently when the hot water flows out of the water outlet pipe 4 due to overlarge steam pressure in the double-layer water liner 3 is avoided; after all the hot water in the inner water container 32 is discharged, the heating tube 5 still generates heat and becomes a dry-burning state, the second temperature sensor detects the heat of the metal bottom plate 6 and sends a signal to the main control board, and the main control board receives the signal and cuts off the power supply at the moment, so that the inner water container 32 is prevented from being damaged due to the dry-burning state.
When the double-layer water container 3 is cooled down, the steam pressure is reduced, and the valve core 82 in the steam valve 8 falls to the pipe orifice of the second connecting pipe 84, so that the steam valve 8 is restored to the normally open state.
The above-mentioned embodiments are merely illustrative and not restrictive, and those skilled in the art can make modifications to the embodiments without inventive contribution as required after reading the present specification, but only protected by the patent laws within the scope of the claims.
Claims (7)
1. A coffee tea machine is characterized in that: comprises a machine base (1), a machine body (2), a double-layer water tank (3), a heating component, a water outlet pipe (4) and a valve component;
the machine body (2) is arranged on the base (1), the machine body (2) comprises a machine shell (201), a top cover (202) hinged to the machine shell (201) and a placing groove (203) for placing coffee powder capsules, the water outlet pipe (4) is communicated with the placing groove (203), and a rubber plug (204) is arranged on the lower surface of the top cover (202);
the double-layer water container (3) is arranged in the machine shell (201), the double-layer water container (3) comprises an outer water container (31) and an inner water container (32) arranged in the outer water container (31), a water inlet hopper (33) is arranged at the top of the outer water container (31), a water inlet is arranged at the top of the inner water container (32), the water inlet hopper (33) extends into a water inlet of the inner water container (32), the water inlet hopper (33) can be in inserted connection and matching with the rubber plug (204), a first water outlet hole (321) is arranged on the side wall of the inner water container (32) close to the bottom, a vertically arranged water outlet groove (34) is arranged on one side of the inner water container (32), a second water outlet hole (341) is arranged on the side wall of the water outlet groove (34) close to the bottom, and the first water outlet hole (321) is communicated with the water outlet groove (34) through the second water outlet hole (341), the top end of the water outlet groove (34) is communicated with the water outlet pipe (4), a gap is arranged between the outer water liner (31) and the inner water liner (32), and the gap is communicated with the second water outlet hole (341);
the heating assembly comprises a heating tube (5), a main control board and a metal base plate (6), the main control board is used for controlling the voltage of the heating tube (5), the metal base plate (6) is arranged on the machine base (1), the heating tube (5) is in a roll shape, the heating tube (5) is arranged on the metal base plate (6), the main control board is arranged below the metal base plate (6) and is positioned on the machine base (1), the main control board is electrically connected with the heating tube (5), the inner water liner (32) and the outer water liner (31) are both arranged on the metal base plate (6), and the heating tube (5) is arranged in the inner water liner (32); a cylindrical metal casing (10) is arranged in the inner water container (32), the metal casing (10) is used for covering the heating tube (5), the heating tube (5) is vertically arranged on the metal casing (10), the bottom of the metal casing (10) is fixedly arranged on the metal bottom plate (6), a plurality of first liquid inlet holes (11) are formed in the side wall of the metal casing (10), and the cross section area of the opening of each first liquid inlet hole (11) is 25.1 square millimeters;
the top of the metal housing (10) is provided with a plurality of second liquid inlet holes (12), and the second liquid inlet holes (12) are circumferentially arranged; a strip-shaped baffle plate (121) is arranged in each second liquid inlet hole (12), one side of each baffle plate (121) is fixedly arranged on the wall of the second liquid inlet hole (12), the other side of each baffle plate (121) is sunken along the direction towards the inside of the metal housing (10), and a water inlet channel is formed between each baffle plate and each second liquid inlet hole (12);
the valve component comprises a safety valve (7) arranged at the top of the outer water container (31) and a steam valve (8) arranged at the top of the outer water container (31); the safety valve (7) is communicated with the inside of the outer water container (31), and the steam valve (8) is communicated with the inside of the outer water container (31).
2. A coffee and tea machine according to claim 1, wherein: the cross-sectional area of the second water outlet hole (341) of the water outlet groove (34) is between 5 and 7 square millimeters.
3. A coffee and tea machine according to claim 1, wherein: the inner water liner (32) and the outer water liner (31) are both cylindrical plastic pieces.
4. A coffee and tea machine according to claim 1, wherein: heating element still includes first temperature sensor (9) and second temperature sensor, first temperature sensor (9) are located outlet pipe (4), second temperature sensor locates the lower surface of metal soleplate (6) is located the below of heating tube (5), first temperature sensor (9) with the main control board electricity is connected, the main control board with second temperature sensor electricity is connected.
5. A coffee and tea machine according to claim 1, wherein: and a silica gel ring (61) is arranged between the metal bottom plate (6) and the bottoms of the inner water container (32) and the outer water container (31).
6. A coffee and tea machine according to claim 1, wherein: the steam valve (8) comprises a cylindrical valve body (81) and a spherical valve core (82), the valve core (82) is located in the valve body (81), the valve core (82) can move up and down in the valve body (81), and when the air pressure of the double-layer water container (3) reaches a certain value, the valve core (82) can block an air outlet of the valve body (81).
7. A coffee and tea machine according to claim 6, wherein: the valve core (82) is glass beads.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910076655.XA CN109645826B (en) | 2019-01-26 | 2019-01-26 | Coffee tea machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910076655.XA CN109645826B (en) | 2019-01-26 | 2019-01-26 | Coffee tea machine |
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| CN109645826B true CN109645826B (en) | 2021-07-20 |
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| CN101808554A (en) * | 2007-07-02 | 2010-08-18 | 贝弗赛普茨公司 | Hot beverage brewing appratus |
| CN204192366U (en) * | 2014-02-25 | 2015-03-11 | 周林斌 | The water inlet of a kind of Voltage force container pot and water outlet brew machine |
| CN106766102A (en) * | 2016-11-25 | 2017-05-31 | 镇江巨商智能科技有限公司 | A kind of stepping water boiler |
| CN206261450U (en) * | 2016-08-10 | 2017-06-20 | 广东德豪润达电气股份有限公司 | Coffee machine |
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| CN202287840U (en) * | 2011-09-02 | 2012-07-04 | 王学斌 | Water boiling device of novel coffee maker |
| CN203576284U (en) * | 2013-10-22 | 2014-05-07 | 张克强 | Heat conduction structure with rapid and uniform heating capacity |
| CN105725826A (en) * | 2014-12-08 | 2016-07-06 | 陕西雅美环保科技有限公司 | Electric heating milk warmer |
| US9980602B2 (en) * | 2015-02-04 | 2018-05-29 | Hamilton Beach Brands, Inc. | Beverage maker |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101808554A (en) * | 2007-07-02 | 2010-08-18 | 贝弗赛普茨公司 | Hot beverage brewing appratus |
| CN204192366U (en) * | 2014-02-25 | 2015-03-11 | 周林斌 | The water inlet of a kind of Voltage force container pot and water outlet brew machine |
| CN206261450U (en) * | 2016-08-10 | 2017-06-20 | 广东德豪润达电气股份有限公司 | Coffee machine |
| CN106766102A (en) * | 2016-11-25 | 2017-05-31 | 镇江巨商智能科技有限公司 | A kind of stepping water boiler |
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