CN111419088A - Method for controlling steam or hot water output of coffee machine - Google Patents
Method for controlling steam or hot water output of coffee machine Download PDFInfo
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- CN111419088A CN111419088A CN202010414970.1A CN202010414970A CN111419088A CN 111419088 A CN111419088 A CN 111419088A CN 202010414970 A CN202010414970 A CN 202010414970A CN 111419088 A CN111419088 A CN 111419088A
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- circuit
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- heating
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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
- A47J31/56—Water boiling vessels in beverage making machines having water-level controls; having temperature controls
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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
- A47J31/468—Pumping means
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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
- A47J31/52—Alarm-clock-controlled mechanisms for coffee- or tea-making apparatus ; Timers for coffee- or tea-making apparatus; Electronic control devices for coffee- or tea-making apparatus
- A47J31/525—Alarm-clock-controlled mechanisms for coffee- or tea-making apparatus ; Timers for coffee- or tea-making apparatus; Electronic control devices for coffee- or tea-making apparatus the electronic control being based on monitoring of specific process parameters
- A47J31/5253—Alarm-clock-controlled mechanisms for coffee- or tea-making apparatus ; Timers for coffee- or tea-making apparatus; Electronic control devices for coffee- or tea-making apparatus the electronic control being based on monitoring of specific process parameters of temperature
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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
- A47J2202/00—Devices having temperature indicating means
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Apparatus For Making Beverages (AREA)
Abstract
The invention discloses a control method for steam or hot water output of a coffee machine, wherein a heating element in the coffee machine adopts a multi-section power heating body, the multi-section power heating body adopts a plurality of combination modes to be combined with a high-pressure water pump to control the water output temperature and the steam output state, and the steam with various water output temperatures and different states can be accurately controlled and freely set by acquiring the temperature of a sensor and a temperature control algorithm. The invention selects to be matched with the high-pressure water pump according to various power heating bodies, thereby effectively shortening the preheating time of the coffee machine and having more flexible heating combination mode; the invention can accurately control the steam in different states, and has low requirement on the flow control accuracy of the high-pressure water pump.
Description
Technical Field
The invention belongs to the technical field of control methods of heating equipment of coffee machines, and particularly relates to a control method of steam or hot water output of a coffee machine.
Background
In order to obtain concentrated coffee with strong taste and fragrance, the conventional coffee machine controls the flow of water through a high-pressure water pump, heats hot water to a certain pressure through a heating part (a boiler/an electric heating wire), then coffee is brewed by powdery coffee beans in a metal filter, and high-grade coffee can emit steam. The conventional coffee machine mainly has the following three defects: 1. the traditional coffee machine has a preheating and warming-up process before coffee is brewed, the preheating and warming-up process is about 30s, and the preheating time is too long; 2. the heating elements of the traditional coffee machine are generally provided with a single boiler (electric heating wire), a high-grade double boiler (electric heating wire) or a plurality of boilers (electric heating wires) and the like, and the traditional coffee machine has the advantages of low heating efficiency, high power, large volume, more connecting pipelines and relatively short service life; 3. when steam is discharged from the traditional coffee machine, the fixed flow of the high-pressure water pump is needed to be matched with the on-off time of the heating element, the requirement on the flow control precision of the high-pressure water pump is high, but the control precision of the water temperature and the pressure is not high. Therefore, the traditional control mode of the coffee machine for discharging steam or hot water has the defects of long preheating time, low heating efficiency, high power, high energy consumption, complex control and incapability of accurately controlling the temperature of discharged water, the quantity of discharged steam and the state of discharged steam.
Disclosure of Invention
The invention solves the technical problem of providing a method for controlling the steam or hot water output of a coffee machine, and effectively realizes the accurate control of the water output temperature with certain pressure or the steam output quantity and the steam output state with certain pressure.
The invention adopts the following technical scheme for solving the technical problems, and the control method for the steam or hot water outlet of the coffee machine is characterized in that: the heating element in the coffee machine adopts a multi-section power heating body, the multi-section power heating body adopts a plurality of combination modes to be combined with a high-pressure water pump to control the water outlet temperature and the steam outlet state, and the temperature of the sensor is collected, and the steam in a plurality of water outlet temperatures and different states can be accurately controlled and freely set through a temperature control algorithm.
The coffee machine is further limited, a heating element in the coffee machine adopts a heating body with multiple sections of power and power density, a heating body base body and a circuit board are arranged in the coffee machine, the circuit board is divided into an operation display circuit board and a heating control circuit board, a communication circuit I, a display circuit SMG, an operation key circuit and a single chip microcomputer U1 are arranged on the operation display circuit board, and the display circuit SMG and the operation key circuit are respectively and electrically connected with the single chip microcomputer U1 through circuits; the heating control circuit board is provided with a power circuit U1, a single chip microcomputer U4, a silicon controlled circuit and a communication circuit II or a power circuit U1, a single chip microcomputer U4, a silicon controlled circuit, a relay circuit and a communication circuit II, the single chip microcomputer U1 and the single chip microcomputer U4 realize two-way communication through the communication circuit I and the communication circuit II, the power circuit U1 is used for providing a stable power supply for the single chip microcomputer U4, the single chip microcomputer U4 is respectively connected with the multi-section power heating bodies through the silicon controlled circuit or the relay circuit, the single chip microcomputer U4 is correspondingly connected with the high-pressure water pump through the silicon controlled circuit, temperature sensors distributed on the multi-section power heating bodies are respectively connected with the acquisition circuit, and steam with various water outlet temperatures and different states can be accurately controlled and freely set through the temperature control algorithm by acquiring the.
Further, the heating substrate in the coffee machine adopts a heating body with multi-section power and power density, the multi-section power and power density are two or three sections, and the two or three sections of heating power and power density are gradually reduced along the flowing direction of the liquid in the liquid flow passage.
Further, the combination of the multi-stage power and the power density in the coffee maker is that two stages of power correspond to at least two stages of power density.
Compared with the prior art, the invention has the following beneficial effects: 1. the invention selects to be matched with the high-pressure water pump according to various power heating bodies, thereby effectively shortening the preheating time of the coffee machine and having more flexible heating combination mode; 2. the invention can accurately control the steam in different states, and has low requirement on the flow control accuracy of the high-pressure water pump; 3. the invention can realize the sectional accurate control of various water outlet water temperatures and steam outlet pressures, takes three sections of heating bodies with different powers as an example and is divided into an upper section, a middle section and a lower section, and when steam with different states is output, the upper section, the middle section and the lower section of the power heating bodies can be respectively controlled to be electrified.
Drawings
FIG. 1 is a schematic block diagram of a coffee maker of the present invention;
FIG. 2 is a circuit connection diagram of a single-chip microcomputer U1 in the invention;
FIG. 3 is a circuit diagram of a communication circuit I according to the present invention;
FIG. 4 is a circuit diagram of L ED display circuit according to the present invention;
FIG. 5 is a circuit diagram of a digital display circuit according to the present invention;
FIG. 6 is a circuit connection diagram of a single-chip microcomputer U4 in the invention;
FIG. 7 is a circuit diagram of the power circuit U1 according to the present invention;
FIG. 8 is a circuit diagram of a communication line II according to the present invention;
FIG. 9 is a circuit diagram of a buzzer circuit according to the present invention;
FIG. 10 is a circuit diagram of the thyristor circuit U6 of the present invention;
FIG. 11 is a circuit diagram of a relay according to the present invention;
FIG. 12 is a circuit diagram of a high pressure water pump according to the present invention;
FIG. 13 is a circuit diagram of the solenoid valve of the present invention;
fig. 14 is a circuit diagram of a power heater temperature acquisition circuit in accordance with the present invention;
FIG. 15 is a circuit diagram of the water level in the present invention;
FIG. 16 is a circuit diagram of the flow meter of the present invention.
Detailed Description
The technical scheme of the invention is described in detail by combining the attached drawings, the heating element in the coffee machine adopts a multi-section power heating body, the multi-section power heating body adopts a plurality of combined modes to be combined with a high-pressure water pump to control the water outlet temperature and the steam outlet state, and the steam with various water outlet temperatures and different states can be accurately controlled and freely set by acquiring the temperature of a sensor and through a PID temperature control algorithm.
Example 1
Control method of two-section or three-section power heating body
A heating element IN the coffee machine adopts two-section or three-section power heating bodies, a circuit board is arranged IN the coffee machine and is divided into an operation display circuit board and a heating control circuit board, a communication circuit I, a display circuit SMG, an operation key circuit and a single chip microcomputer U are arranged on the operation display circuit board, the display circuit SMG and the operation key circuit are respectively and electrically connected with the single chip microcomputer U through lines, a power supply circuit, a single chip microcomputer circuit, a silicon controlled circuit, an acquisition circuit, a relay circuit, a communication circuit and a buzzer circuit are arranged on the heating control circuit board, the single chip microcomputer U and the control panel single chip microcomputer U realize bidirectional communication through the communication circuit I and the communication circuit II, the power supply circuit U provides stable power for the single chip microcomputer U and the operation display panel, the heating control circuit board is powered on through the power supply circuit, AC220 () is sent to a pin of the power supply circuit U through an F fuse, a piezoresistor RV, a resistor R and a capacitor C IN the power supply circuit U, the pin N pin of the AC220 (N) power supply circuit U, VO + pin output pin of the power supply circuit U outputs 12V 3, the voltage through the capacitor C3, the capacitor C5, the capacitor C3, the capacitor C48, the capacitor C3.
After the operation display circuit board and the heating control circuit board are electrified, the operation display circuit board operates a key startup key, a startup message is in two-way communication with the heating control circuit board communication circuit II through the communication circuit I, and the singlechip U4 in the heating control circuit board enters a complete machine preheating state after receiving the message. After preheating is finished, the control circuit can upload a signal of finishing preheating, and at the moment, a button with a hot water or steam function can be operated on the operation display circuit board to realize hot water or steam outlet.
The PWM of the singlechip U4 is connected with the power section of the heating body through a silicon controlled circuit. The specific circuit is that a pin 42 of the singlechip U4 is connected with a resistor R19 and a resistor R21 through a triode Q8 and is connected with a photoelectric coupler U6, the photoelectric coupler and a resistor R54 are connected with a controllable silicon Q9, and finally the photoelectric coupler and the resistor R3683 are connected to a power section of a heating body through a wiring terminal P14. The resistor R55 and the capacitor C33 are filter circuits.
The power section of the heating body can also be controlled by a relay circuit. The specific circuit is that a pin 26 of the singlechip U4 is connected with a resistor R61 and a resistor R62, and the resistor R61 and the resistor R62 are connected with a diode D2 and a relay K2 through a triode Q12 to control the switching action of the relay.
The high-pressure water pump controls the flow of the water pump through a silicon controlled circuit. The specific circuit is that a 11-pin connecting resistor R50 and a resistor R52 of the singlechip U4 are connected with a photoelectric coupler U9 through a triode Q6, the photoelectric coupler and a resistor R46 are connected with a controlled silicon Q5, and finally the photoelectric coupler and the controlled silicon Q5 are connected to a high-pressure water pump through a wiring terminal P13. The resistor R48 and the capacitor C33 are filter circuits.
The function of the electromagnetic valve circuit is to switch out steam and hot water. The specific circuit is that a pin 25 of the singlechip U4 is connected with a resistor R51 and a resistor R53 through a triode Q7, a diode D1 and a relay K1 to control the on-off of the relay, so that steam and hot water are controlled.
The acquisition circuit comprises the functions of temperature acquisition, water level acquisition, flow acquisition and the like. The temperature acquisition specific circuit is connected with a resistor R24, a capacitor C23 and a resistor R27 through a temperature sensor, is connected with an operational amplifier U7 through a capacitor C24, is connected with a resistor R25 and a capacitor C22 through a U7, and finally is operated on a 12-pin of a single chip microcomputer U4 to calculate a temperature value. The water level and flow meter acquisition circuit is similar to temperature acquisition. The water level circuit is used for judging the state of the water level in the container, and the flowmeter circuit is used for judging the water flow.
The communication circuit is a two-way communication connection between the control board and the operation display board, and comprises a power supply for the display board.
The buzzer circuit has the function of sounding when the machine is in failure or a certain function action is completed so as to remind a user. The specific circuit is that a 41-pin connecting resistor R43 and a resistor R44 of the singlechip U4 are connected with a buzzer through a triode Q1 to control the buzzer to make different sounds.
The specific circuit is that the operation keys S1, S2, S3 and S4 and the resistors R15, R16, R17 and R18 are connected with the pins 25, 26, 27 and 28 of the singlechip U1 through operation keys S1, S2, S3 and S4, the pins 11, 12, 13 and 14 of the singlechip U1 are respectively connected with the triodes Q1, Q2, Q3 and Q4 through electric groups R11, R12, R13 and R14, and are connected with the displayed L ED nixie tube and the indicating lamp after passing through the triodes.
The specific operation process of the invention is that when the hot water is in a hot water outlet state, two sections of power heater power supplies are switched on, the single chip microcomputer U4 adjusts the upper section power to about 600W and the lower section power to about 800W through PWM, meanwhile, one path of PWM is output to a high pressure water pump to control the water pump to output water at 270m L/min, the single chip microcomputer U4 acquires the value of a heating pipe temperature sensor in real time through an acquisition circuit, the temperature is set to be 200 ℃, when the temperature is higher or lower than the set temperature, the duty ratio of the PWM of each power section is adjusted in real time through a PID algorithm to adjust the heating power, and the water at 95 ℃ is accurately.
When the steam is in a steam outlet state, a two-section power supply of the power heating body is switched on, the single chip microcomputer U4 adjusts the upper section power to about 300W and the lower section power to about 400W through PWM, meanwhile, one path of PWM is output to the high-pressure water pump to control the water pump to output water at 28m L/min, the single chip microcomputer U4 collects the value of the temperature sensor of the heating plate in real time through a collection circuit, the temperature set value is 280 ℃, when the temperature is higher than or lower than the set temperature value, the duty ratio of PWM of each power section is adjusted in real time through an algorithm to adjust the heating power, and the dry.
While there have been shown and described what are at present considered the fundamental principles of the invention, its essential features and advantages, the invention further resides in various changes and modifications which fall within the scope of the invention as claimed.
Claims (4)
1. A control method for discharging steam or hot water from a coffee machine is characterized in that: the heating element in the coffee machine adopts a heating body with multiple sections of power and power density, the heating body with multiple sections of power and power density is combined with a high-pressure water pump by adopting multiple combined modes to control the water outlet temperature and the steam outlet state, and the temperature of the sensor is acquired, and the steam in multiple water outlet temperatures and different states can be accurately controlled and freely set through a temperature control algorithm.
2. The method for controlling steam or hot water output of a coffee machine as claimed in claim 1, wherein: the heating element in the coffee machine adopts a heating body with multi-section power and power density, a heating body base body and a circuit board are arranged in the coffee machine, the circuit board is divided into an operation display circuit board and a heating control circuit board, a communication circuit I, a display circuit SMG, an operation key circuit and a single chip microcomputer U1 are arranged on the operation display circuit board, and the display circuit SMG and the operation key circuit are respectively and electrically connected with the single chip microcomputer U1 through circuits; the heating control circuit board is provided with a power circuit U1, a single chip microcomputer U4, a silicon controlled circuit and a communication circuit II or a power circuit U1, a single chip microcomputer U4, a silicon controlled circuit, a relay circuit and a communication circuit II, the single chip microcomputer U1 and the single chip microcomputer U4 realize two-way communication through the communication circuit I and the communication circuit II, the power circuit U1 is used for providing a stable power supply for the single chip microcomputer U4, the single chip microcomputer U4 is respectively connected with the multi-section power heating bodies through the silicon controlled circuit or the relay circuit, the single chip microcomputer U4 is correspondingly connected with the high-pressure water pump through the silicon controlled circuit, temperature sensors distributed on the multi-section power heating bodies are respectively connected with the acquisition circuit, and steam with various water outlet temperatures and different states can be accurately controlled and freely set through the temperature control algorithm by acquiring the.
3. The method for controlling steam or hot water output of a coffee machine as claimed in claim 2, wherein: a heating substrate in the coffee machine is provided with a heating body with multi-section power and power density, the multi-section power and power density are two or three sections, and the two or three sections of heating power and power density are gradually reduced along the flowing direction of liquid in a liquid flow passage.
4. A method for controlling the delivery of steam or hot water from a coffee machine according to claim 3, characterized in that: the combination mode of the multi-section power and the power density in the coffee machine is that two sections of power correspond to at least two sections of power densities.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010414970.1A CN111419088A (en) | 2020-05-15 | 2020-05-15 | Method for controlling steam or hot water output of coffee machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010414970.1A CN111419088A (en) | 2020-05-15 | 2020-05-15 | Method for controlling steam or hot water output of coffee machine |
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| Publication Number | Publication Date |
|---|---|
| CN111419088A true CN111419088A (en) | 2020-07-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010414970.1A Pending CN111419088A (en) | 2020-05-15 | 2020-05-15 | Method for controlling steam or hot water output of coffee machine |
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| Country | Link |
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| CN (1) | CN111419088A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113057498A (en) * | 2021-03-08 | 2021-07-02 | 福建东西乐活科技有限公司 | Method, terminal and equipment for controlling water temperature of coffee machine |
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| CN2536160Y (en) * | 2002-01-04 | 2003-02-19 | 北京中日新自动化系统有限公司 | Instant temperature setter, dosing device and water dispenser therewith |
| CN200984101Y (en) * | 2006-12-21 | 2007-12-05 | 浙江沁园水处理科技股份有限公司 | Control device of the direct-drinking machine having heat-free inner container |
| CN201497887U (en) * | 2009-07-10 | 2010-06-02 | 南通航运职业技术学院 | Electronic controller of semi-automatic coffee machine |
| CN201556087U (en) * | 2009-07-29 | 2010-08-18 | 奉化市东欣仪表有限公司 | Capsule type circuit chip of coffee machine |
| CN204410570U (en) * | 2014-12-31 | 2015-06-24 | 吉诺工业有限公司 | Steam and hot-water supply device |
| CN105559590A (en) * | 2014-11-05 | 2016-05-11 | 广州市拓璞电器发展有限公司 | Multifunctional heating device |
| CN210351691U (en) * | 2019-08-01 | 2020-04-17 | 厦门海赛米克新材料科技有限公司 | Ceramic heater for water heating with higher efficiency |
-
2020
- 2020-05-15 CN CN202010414970.1A patent/CN111419088A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2536160Y (en) * | 2002-01-04 | 2003-02-19 | 北京中日新自动化系统有限公司 | Instant temperature setter, dosing device and water dispenser therewith |
| CN200984101Y (en) * | 2006-12-21 | 2007-12-05 | 浙江沁园水处理科技股份有限公司 | Control device of the direct-drinking machine having heat-free inner container |
| CN201497887U (en) * | 2009-07-10 | 2010-06-02 | 南通航运职业技术学院 | Electronic controller of semi-automatic coffee machine |
| CN201556087U (en) * | 2009-07-29 | 2010-08-18 | 奉化市东欣仪表有限公司 | Capsule type circuit chip of coffee machine |
| CN105559590A (en) * | 2014-11-05 | 2016-05-11 | 广州市拓璞电器发展有限公司 | Multifunctional heating device |
| CN204410570U (en) * | 2014-12-31 | 2015-06-24 | 吉诺工业有限公司 | Steam and hot-water supply device |
| CN210351691U (en) * | 2019-08-01 | 2020-04-17 | 厦门海赛米克新材料科技有限公司 | Ceramic heater for water heating with higher efficiency |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113057498A (en) * | 2021-03-08 | 2021-07-02 | 福建东西乐活科技有限公司 | Method, terminal and equipment for controlling water temperature of coffee machine |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200717 |
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| RJ01 | Rejection of invention patent application after publication |