CN209149175U - A kind of control circuit of instant heating type tea-drinking machine - Google Patents
A kind of control circuit of instant heating type tea-drinking machine Download PDFInfo
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- CN209149175U CN209149175U CN201920138276.4U CN201920138276U CN209149175U CN 209149175 U CN209149175 U CN 209149175U CN 201920138276 U CN201920138276 U CN 201920138276U CN 209149175 U CN209149175 U CN 209149175U
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Abstract
The utility model discloses a kind of control circuits of instant heating type tea-drinking machine, the control circuit is during the work time, cold water is pumped into heating water route by water pump, flowmeter detects water flow, the inflow temperature of first temperature sensor detection heating tube, and the leaving water temperature of second temperature sensor detection heating tube, water flow, inflow temperature and leaving water temperature are fed back to main control MCU, main control MCU adjusts the duty ratio of pwm signal according to water flow and the temperature difference of Inlet and outlet water, by the duty ratio for adjusting pwm signal, to can control the heating power of heating tube --- it realizes and passes through water flow, it passes in and out water temperature difference and automatically adjusts heating power, realize instant heating type heating, it is energy-efficient.
Description
Technical field
The utility model relates to a kind of tea-drinking machines, more specifically, it relates to a kind of control circuit of instant heating type tea-drinking machine.
Background technique
With the continuous improvement of living standards with the blending of Chinese and Western culture, more and more people by tea, coffee, milk tea regard
For element indispensable in life.Especially tea ceremony, as a part of traditional oriental culture, tea culture is long-drawn-out in China's history
Long, and there is experience and the tea set abundant of drinking tea.
Have some tea-drinking machines on the market at present, have the characteristics that a tractor serves several purposes, brewing tea can be used for, coffee can also
For making milk tea.The heating power of traditional tea-drinking machines some on the market is fixed at present, can not be according to the temperature of water inlet
Degree adjusts heating power, and longer heating time is generally required when inflow temperature is lower.Recent years, it is instant heating type heating just by
Gradually become mainstream, applied on the products such as water heater, intelligent closestool, though it is foreseeable that in the following instant heating type tea
Drink machine will become the mainstream of tea-drinking industry, and the original design intention of this patent is exactly the instant heating type heating in order to realize tea-drinking machine.
Utility model content
In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of controls of instant heating type tea-drinking machine
Circuit can be adjusted heating power according to inflow temperature and the leaving water temperature of setting, realize instant heating type heating.
To achieve the above object, the utility model provides following technical solution:
A kind of control circuit of instant heating type tea-drinking machine, including main control MCU, it is characterized in that: also further including being connect with main control MCU
Display screen, water flow switch, temperature sensor, solenoid valve, flowmeter, key module, crystal oscillator module, silicon control zero-cross triggering drive
Dynamic circuit and power module, the wherein control of the control signal input connection main control MCU of silicon control zero-cross triggering driving circuit
Signal output end processed, the driving signal output end of the silicon control zero-cross triggering driving circuit is for connecting heating tube, the electricity
Source module is used to power to entire control circuit.
As a preferred solution: the main control MCU is using STM32F103C8 chip.
As a preferred solution: the zero cross fired driving circuit include resistance R3, resistance R4, resistance R5, two-way optocoupler T1,
Light emitting diode D1, triode Q1, bidirectional triode thyristor Q2, resistance R6, resistance R7, resistance R8 and capacitor C8, wherein bi-directional light
No. 1 foot of coupling G1 passes through resistance R3 connection power supply VCC, the collector of No. 2 foot connecting triode Q1 of two-way optocoupler G1, triode
The emitter of Q1 is grounded, and the base stage of triode Q1 passes through the HT interface of resistance R5 connection main control MCU, the anode of light emitting diode D1
Connect the collector of three laser Q1 by the cathode of resistance R4 connection power supply VCC, light emitting diode D1, No. 6 of two-way optocoupler G1
Foot connects bidirectional triode thyristor Q2 by No. 4 feet of the second main electrode T2, two-way optocoupler W1 of resistance R6 connection bidirectional triode thyristor Q2
Gate pole G, the first main electrode T1 connection AC220V alternating current zero curve of bidirectional triode thyristor Q2, the second main electrode of bidirectional triode thyristor Q2
T2 connection AC220V alternating current firewire, an electrode of heater HEAT connect with the second main electrode T2 of bidirectional triode thyristor Q2, add
Another electrode of hot device is connect with AC220V alternating current zero curve, is connected between the first main electrode T1 and gate pole G of bidirectional triode thyristor Q2
It is connected to resistance R8, resistance R7 and capacitor C8 series connection, the first main electrode T2 of the other end connection bidirectional triode thyristor Q2 of resistance R7, electricity
Hold the first main electrode T1 of the other end connection bidirectional triode thyristor Q2 of C8.
As a preferred solution: the power module includes rectification circuit, the power isolation module that is connected with the rectifying circuit with
And the power supply module being connect with power isolation module.
As a preferred solution: the power isolation module includes resistance R9, resistance R10, resistance R11, resistance R12, resistance
R13, capacitor C9, zener diode D2, isolation optocoupler W2 and triode Q3, wherein resistance R9 in series point of resistance R10
Volt circuit, the other end of resistance R9 connect HVDC DC power supply, and the other end ground connection of resistance R10, one end of capacitor C9 connects electricity
Hinder the hot end of R10, the other end ground connection of capacitor C9, the plus earth of zener diode D2, the cathode of zener diode D2
The hot end of resistance R10 is connected, No. 1 foot of isolation optocoupler W2 is connect by resistance R11 with the cathode of zener diode D2, every
No. 2 feet and No. 3 foot ground connection, No. 4 feet of isolation optocoupler from optocoupler W2 pass through resistance R12 connection power supply VCC, the base of triode Q3
Pole connects No. 4 feet of isolation optocoupler W2, and the collector of triode Q3 passes through resistance R13 connection power supply VCC, the transmitting of triode Q3
Pole ground connection, the collector of the INT interface connecting triode Q3 of main control MCU.
As a preferred solution: the power supply module includes power supply IC, diode D3, diode D5, light emitting diode
D4, zener diode D6, electrolytic capacitor C10, capacitor C11, capacitor C12, capacitor C13, capacitor C14, capacitor C15, electrolytic capacitor
C16, capacitor C17, resistance R14, resistance R15, resistance R16, resistance R17, resistance R18, resistance R19 and inductance L, wherein power supply
The anode of the model TPS54231 of IC, diode D3 are connect with input power, and No. 2 of the cathode connection power supply IC of diode D3
Foot, No. 2 feet and its cathode of the anode connection power supply IC of electrolytic capacitor C10 are grounded, and the 2 of one end connection power supply IC of capacitor C11
Number foot and its other end is grounded, No. 2 feet of one end connection power supply IC of resistance R14 and its other end connection light emitting diode D4's
Anode, the cathode ground connection of light emitting diode D4, is connected with resistance R15 between No. 2 feet and No. 3 feet of power supply IC, and No. 4 of power supply IC
Foot is grounded by capacitor C12, and capacitor C13 is connected between No. 1 foot and No. 8 feet of power supply IC, and the cathode of zener diode D6 connects
Connecing power supply VCC and its plus earth, No. 8 feet of power supply IC pass through the cathode of inductance L connection zener diode D6, and the 7 of power supply IC
Number foot ground connection, resistance R16 connect with capacitor C14, and the other end of resistance R16 connects No. 6 feet of power supply IC, and capacitor C14's is another
End ground connection, No. 6 feet and its other end of one end connection power supply IC of capacitor C15 are grounded, and the cathode of diode D5 connects power supply IC
No. 6 feet and its plus earth, electrolytic capacitor C16 anode connection zener diode D6 cathode and its cathode be grounded, resistance
R17, resistance R18 and resistance R19 are sequentially connected in series, the cathode of the other end connection zener diode D6 of resistance R17, resistance R19's
Other end ground connection, the cathode and its other end of one end connection zener diode D6 of capacitor C17 are grounded.
Compared with prior art, the utility model has the advantages that: the control circuit during the work time, by water pump to adding
Cold water is pumped into hot water road, flowmeter detects water flow, and the first temperature sensor detects the inflow temperature of heating tube, and second is warm
The leaving water temperature of sensor detection heating tube is spent, water flow, inflow temperature and leaving water temperature are fed back to main control MCU, main control MCU
The duty ratio that pwm signal is adjusted according to water flow and the temperature difference of Inlet and outlet water, by adjusting the duty ratio of pwm signal, thus
It can control the heating power of heating tube --- and realize and heating power is automatically adjusted by water flow, disengaging water temperature difference, it realizes
Instant heating type heating, it is energy-efficient.
Detailed description of the invention
Fig. 1 is circuit module connection figure；
Fig. 2 is the detailed circuit diagram of main control part；
Fig. 3 is the detailed circuit diagram of drive part and isolated power supply part；
Fig. 4 is the detailed circuit diagram for supplying power supply.
Specific embodiment
Referring to Fig.1, a kind of control circuit of instant heating type tea-drinking machine, including main control MCU, further include connecting with main control MCU
Display screen, water flow switch, temperature sensor, solenoid valve, flowmeter, key module, crystal oscillator module, silicon control zero-cross triggering driving
Circuit and power module, wherein display screen, water flow switch, temperature sensor, solenoid valve, flowmeter, key module with master
The port the I/O connection of MCU is controlled, silicon control zero-cross triggers the control letter of the control signal input connection main control MCU of driving circuit
Number output end, the driving signal output end of silicon control zero-cross triggering driving circuit is for connecting heating tube, and power module is for giving
Entire control circuit power supply.
Referring to Fig. 2, the main control MCU in the present embodiment is using STM32F103C8 chip, the port I/O of main control chip
It is defined as follows:
NTC interface, for connecting NTC temperature sensor, wherein NTC1 interface is used to connect the first NTC temperature sensor,
NTC2 interface is for connecting the 2nd NTC temperature sensor；
VAL interface, for connecting solenoid valve, wherein VAL1 interface is for connecting the first solenoid valve, and VAL2 interface is for connecting
Second solenoid valve is connect, and so on；
HT interface, for exporting PWM control control signal；
FLOW interface, for connecting flowmeter；
W WS interface, for connecting water flow switch, wherein W WS interface is used for for connecting the first water flow switch, W WS2
Connect the second water flow switch；
D RX interface and D TX interface, for connecting display screen.
INT interface, abort signal interface.
Referring to Fig. 2, silicon control zero-cross triggering driving circuit includes resistance R3, resistance R4, resistance R5, two-way optocoupler T1, hair
Optical diode D1, triode Q1, bidirectional triode thyristor Q2, resistance R6, resistance R7, resistance R8 and capacitor C8.
Wherein No. 1 foot of two-way optocoupler G1 connects three poles by resistance R3 connection power supply VCC, No. 2 feet of two-way optocoupler G1
The collector of pipe Q1, the emitter ground connection of triode Q1, the base stage of triode Q1 are connect by the HT of resistance R5 connection main control MCU
Mouthful, the anode of light emitting diode D1 connects the collection of three laser Q1 by the cathode of resistance R4 connection power supply VCC, light emitting diode D1
Electrode, No. 6 feet of two-way optocoupler G1 are by the second main electrode T2 of resistance R6 connection bidirectional triode thyristor Q2, and the 4 of two-way optocoupler W1
The gate pole G of number foot connection bidirectional triode thyristor Q2, the first main electrode T1 connection AC220V alternating current zero curve of bidirectional triode thyristor Q2
(ACN), the second main electrode T2 connection AC220V alternating current firewire (ACL) of bidirectional triode thyristor Q2, an electrode of heater HEAT
It is connect with the second main electrode T2 of bidirectional triode thyristor Q2, another electrode of heater is connect with AC220V alternating current zero curve, two-way
Resistance R8, resistance R7 and capacitor C8 series connection are connected between the first main electrode T1 and gate pole G of silicon-controlled Q2, resistance R7's is another
The first main electrode of the other end connection bidirectional triode thyristor Q2 of the first main electrode T2 of end connection bidirectional triode thyristor Q2, capacitor C8
T1。
The working principle of the control circuit are as follows:
Flowmeter to detect water flow is installed in the water heating pipe road of tea-drinking machine, and in the water inlet of heating tube and
Water outlet installs the first NTC temperature sensor and the 2nd NTC temperature sensor additional respectively, installs solenoid valve additional in pipeline, with control
The on-off in water route processed.
During the work time, cold water is pumped into heating water route by water pump, flowmeter detects water flow, the first NTC temperature
The inflow temperature of degree sensor detection heating tube, and the leaving water temperature of the 2nd NTC temperature sensor detection heating tube, water flow,
Inflow temperature and leaving water temperature are fed back to main control MCU, and main control MCU adjusts PWM according to water flow and the temperature difference of Inlet and outlet water
The duty ratio of signal, pwm signal are exported by the HT interface of main control MCU, are transferred to silicon control zero-cross triggering driving circuit, are believed in PWM
Number act on the base stage of triode Q1, triode Q1 constantly cyclically turn-on and turn-off, so that two-way optocoupler W1 be made to recycle therewith
Conducting and shutdown, two-way optocoupler W1 export pulse control signal to the gate pole G of bidirectional triode thyristor Q2, lead bidirectional triode thyristor circulation
Logical and closing, it is two-way controllable by controlling since bidirectional triode thyristor is connected in the power circuit of heating tube (AC220V alternating current)
The turn-on and turn-off of silicon can control heating tube circulating-heating and stop heating, to realize the control to heating tube heating power
System.By adjust pwm signal duty ratio, to can control the heating power of heating tube --- and realize by water flow,
It passes in and out water temperature difference and automatically adjusts heating power, realize instant heating type heating, it is energy-efficient.
Referring to Fig. 3, the input terminal of rectification circuit connects AC220V alternating current, and the output end of rectification circuit exports DC power supply
HVDC。
Power isolation module includes resistance R9, resistance R10, resistance R11, resistance R12, resistance R13, capacitor C9, pressure stabilizing two
Pole pipe D2, isolation optocoupler W2 and triode Q3.
Wherein, the other end of resistance R9 and resistance R10 bleeder circuit in series, resistance R9 connects HVDC DC power supply,
The other end of resistance R10 is grounded, the hot end of one end connection resistance R10 of capacitor C9, the other end ground connection of capacitor C9, pressure stabilizing
The plus earth of diode D2, the hot end of the cathode connection resistance R10 of zener diode D2, No. 1 foot of isolation optocoupler W2
It is connect by resistance R11 with the cathode of zener diode D2, No. 2 feet of isolation optocoupler W2 and No. 3 foot ground connection, the 4 of isolation optocoupler
No. 4 feet of number foot by the base stage connection isolation optocoupler W2 of resistance R12 connection power supply VCC, triode Q3, the current collection of triode Q3
Pole is grounded by the emitter of resistance R13 connection power supply VCC, triode Q3, the INT interface connecting triode Q3's of main control MCU
Collector.
Power isolation module plays the role of that alternating current is isolated, and protects the trouble free service of control circuit.
Power supply module includes power supply IC, diode D3, diode D5, light emitting diode D4, zener diode D6, electricity
Solve capacitor C10, capacitor C11, capacitor C12, capacitor C13, capacitor C14, capacitor C15, electrolytic capacitor C16, capacitor C17, resistance
R14, resistance R15, resistance R16, resistance R17, resistance R18, resistance R19 and inductance L.
Wherein, the anode of the model TPS54231 of power supply IC, diode D3 are connect with input power, and diode D3's is negative
Pole connects No. 2 feet of power supply IC, and No. 2 feet and its cathode of the anode connection power supply IC of electrolytic capacitor C10 are grounded, capacitor C11's
One end connects No. 2 feet of power supply IC and its other end is grounded, No. 2 feet and its other end of one end connection power supply IC of resistance R14
The anode of light emitting diode D4 is connected, the cathode ground connection of light emitting diode D4 is connected between No. 2 feet and No. 3 feet of power supply IC
No. 4 feet of resistance R15, power supply IC are grounded by capacitor C12, are connected with capacitor C13 between No. 1 foot and No. 8 feet of power supply IC, surely
The cathode connection power supply VCC and its plus earth of diode D6 are pressed, No. 8 feet of power supply IC pass through inductance L connection zener diode
The cathode of D6, No. 7 feet ground connection of power supply IC, resistance R16 connect with capacitor C14, and the 6 of the other end connection power supply IC of resistance R16
Number foot, the other end ground connection of capacitor C14, No. 6 feet and its other end of one end connection power supply IC of capacitor C15 are grounded, diode
No. 6 feet and its plus earth of the cathode connection power supply IC of D5, the cathode of the anode connection zener diode D6 of electrolytic capacitor C16
And its cathode is grounded, resistance R17, resistance R18 and resistance R19 are sequentially connected in series, and the other end of resistance R17 connects zener diode D6
Cathode, resistance R19 the other end ground connection, capacitor C17 one end connection zener diode D6 cathode and its other end be grounded.
The above is only the preferred embodiment of the utility model, and the protection scope of the utility model is not limited merely to
Above-described embodiment, technical solution belonging to the idea of the present invention belong to the protection scope of the utility model.It should refer to
Out, for those skilled in the art, it is without departing from the principle of the utility model it is several improvement and
Retouching, these improvements and modifications also should be regarded as the protection scope of the utility model.
Claims (6)
1. a kind of control circuit of instant heating type tea-drinking machine, including main control MCU, it is characterized in that: also further including being connect with main control MCU
Display screen, water flow switch, temperature sensor, solenoid valve, flowmeter, key module, crystal oscillator module, silicon control zero-cross triggering driving
Circuit and power module, the wherein control of the control signal input connection main control MCU of silicon control zero-cross triggering driving circuit
Signal output end, the driving signal output end of the silicon control zero-cross triggering driving circuit is for connecting heating tube, the power supply
Module is used to power to entire control circuit.
2. the control circuit of instant heating type tea-drinking machine according to claim 1, it is characterized in that: the main control MCU using
STM32F103C8 chip.
3. the control circuit of instant heating type tea-drinking machine according to claim 1, it is characterized in that: the zero cross fired driving circuit
Including resistance R3, resistance R4, resistance R5, two-way optocoupler T1, light emitting diode D1, triode Q1, bidirectional triode thyristor Q2, resistance
R6, resistance R7, resistance R8 and capacitor C8, wherein No. 1 foot of two-way optocoupler G1 passes through resistance R3 connection power supply VCC, bi-directional light
The collector of No. 2 foot connecting triode Q1 of coupling G1, the emitter ground connection of triode Q1, the base stage of triode Q1 pass through resistance R5
The HT interface of main control MCU is connected, the anode of light emitting diode D1 passes through the negative of resistance R4 connection power supply VCC, light emitting diode D1
Pole connects the collector of three laser Q1, and No. 6 feet of two-way optocoupler G1 pass through the second main electricity of resistance R6 connection bidirectional triode thyristor Q2
The gate pole G of No. 4 feet connection bidirectional triode thyristor Q2 of pole T2, two-way optocoupler W1, the first main electrode T1 connection of bidirectional triode thyristor Q2
AC220V alternating current zero curve, the second main electrode T2 connection AC220V alternating current firewire of bidirectional triode thyristor Q2, one of heater HEAT
Electrode is connect with the second main electrode T2 of bidirectional triode thyristor Q2, another electrode of heater is connect with AC220V alternating current zero curve,
Resistance R8, resistance R7 and capacitor C8 series connection are connected between the first main electrode T1 and gate pole G of bidirectional triode thyristor Q2, resistance R7's
The other end connects the first main electrode T2 of bidirectional triode thyristor Q2, the first main electricity of the other end connection bidirectional triode thyristor Q2 of capacitor C8
Pole T1.
4. the control circuit of instant heating type tea-drinking machine according to claim 1, it is characterized in that: the power module includes rectification
Circuit, the power isolation module being connected with the rectifying circuit and the power supply module being connect with power isolation module.
5. the control circuit of instant heating type tea-drinking machine according to claim 4, it is characterized in that: the power isolation module includes
Resistance R9, resistance R10, resistance R11, resistance R12, resistance R13, capacitor C9, zener diode D2, isolation optocoupler W2 and three poles
Pipe Q3, wherein resistance R9 and resistance R10 bleeder circuit in series, the other end of resistance R9 connect HVDC DC power supply, resistance
The other end of R10 is grounded, the hot end of one end connection resistance R10 of capacitor C9, the other end ground connection of capacitor C9, two pole of pressure stabilizing
The plus earth of pipe D2, the hot end of the cathode connection resistance R10 of zener diode D2, No. 1 foot of isolation optocoupler W2 pass through
Resistance R11 is connect with the cathode of zener diode D2, No. 2 feet of isolation optocoupler W2 and No. 3 foot ground connection, No. 4 feet of isolation optocoupler
No. 4 feet of isolation optocoupler W2 are connected by the base stage of resistance R12 connection power supply VCC, triode Q3, the collector of triode Q3 is logical
Cross the emitter ground connection of resistance R13 connection power supply VCC, triode Q3, the current collection of the INT interface connecting triode Q3 of main control MCU
Pole.
6. the control circuit of instant heating type tea-drinking machine according to claim 4, it is characterized in that: the power supply module includes
Power supply IC, diode D3, diode D5, light emitting diode D4, zener diode D6, electrolytic capacitor C10, capacitor C11, capacitor
C12, capacitor C13, capacitor C14, capacitor C15, electrolytic capacitor C16, capacitor C17, resistance R14, resistance R15, resistance R16, resistance
R17, resistance R18, resistance R19 and inductance L, anode and the input of the wherein model TPS54231 of power supply IC, diode D3
Power supply connection, diode D3 cathode connection power supply IC No. 2 feet, electrolytic capacitor C10 anode connection power supply IC No. 2 feet and
Its cathode ground connection, No. 2 feet and its other end of one end connection power supply IC of capacitor C11 are grounded, and one end of resistance R14 connects power supply
No. 2 feet of IC and the anode of its other end connection light emitting diode D4, the cathode ground connection of light emitting diode D4, No. 2 of power supply IC
Resistance R15 is connected between foot and No. 3 feet, No. 4 feet of power supply IC are grounded by capacitor C12, No. 1 foot and No. 8 feet of power supply IC
Between be connected with capacitor C13, the cathode connection power supply VCC and its plus earth, No. 8 feet of power supply IC of zener diode D6 passes through
The cathode of inductance L connection zener diode D6, No. 7 feet ground connection of power supply IC, resistance R16 connect with capacitor C14, resistance R16's
The other end connect power supply IC No. 6 feet, capacitor C14 the other end ground connection, capacitor C15 one end connection power supply IC No. 6 feet and
Its other end ground connection, No. 6 feet and its plus earth of the cathode connection power supply IC of diode D5, the anode of electrolytic capacitor C16 is even
It connects the cathode of zener diode D6 and its cathode is grounded, resistance R17, resistance R18 and resistance R19 are sequentially connected in series, and resistance R17's is another
One end connects the cathode of zener diode D6, and the other end ground connection of resistance R19, one end of capacitor C17 connects zener diode D6
Cathode and its other end be grounded.
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| CN201920138276.4U CN209149175U (en) | 2019-01-28 | 2019-01-28 | A kind of control circuit of instant heating type tea-drinking machine |
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| CN201920138276.4U CN209149175U (en) | 2019-01-28 | 2019-01-28 | A kind of control circuit of instant heating type tea-drinking machine |
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| CN110703846A (en) * | 2019-11-13 | 2020-01-17 | 小熊电器股份有限公司 | Power control circuit and power control method |
| CN111631600A (en) * | 2020-06-08 | 2020-09-08 | 杭州老板电器股份有限公司 | Water temperature adjusting and controlling method and device, pipeline water dispenser and water dispenser device |
| CN113384138A (en) * | 2021-07-19 | 2021-09-14 | 浙江夕尔科技有限公司 | Temperature control method of instant milk regulator and high-precision temperature control instant milk regulator |
| CN113498222A (en) * | 2021-06-30 | 2021-10-12 | 深圳市科曼医疗设备有限公司 | Heating rod power control circuit |
| CN113842045A (en) * | 2021-09-10 | 2021-12-28 | 浙江夕尔科技有限公司 | Instant milk regulator and temperature control method |
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| CN110703846A (en) * | 2019-11-13 | 2020-01-17 | 小熊电器股份有限公司 | Power control circuit and power control method |
| CN111631600A (en) * | 2020-06-08 | 2020-09-08 | 杭州老板电器股份有限公司 | Water temperature adjusting and controlling method and device, pipeline water dispenser and water dispenser device |
| CN113498222A (en) * | 2021-06-30 | 2021-10-12 | 深圳市科曼医疗设备有限公司 | Heating rod power control circuit |
| CN113384138A (en) * | 2021-07-19 | 2021-09-14 | 浙江夕尔科技有限公司 | Temperature control method of instant milk regulator and high-precision temperature control instant milk regulator |
| CN113842045A (en) * | 2021-09-10 | 2021-12-28 | 浙江夕尔科技有限公司 | Instant milk regulator and temperature control method |
| CN115192326A (en) * | 2022-07-07 | 2022-10-18 | 赵子艳 | Medical bird's nest |
| CN115192326B (en) * | 2022-07-07 | 2023-10-20 | 河南省人民医院 | Medical bird nest |
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Effective date of registration: 20210210 Address after: 411400 No.204, unit 2, building 8, No.74, Nanjin Road, Kunlun bridge, Xiangxiang City, Xiangtan City, Hunan Province Patentee after: Li Qiong Address before: 510800 Room 301, building 1, 47 xiyunfeng Road, pingbu Avenue, Xinhua Industrial Zone, Huadu District, Guangzhou City, Guangdong Province Patentee before: Guangzhou Xinjuzhong Catering Equipment Co.,Ltd. |
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