CN110960096A

CN110960096A - Milk foaming device and foamed milk manufacturing method

Info

Publication number: CN110960096A
Application number: CN201911367268.8A
Authority: CN
Inventors: 叶辛; 叶丘羽; 管仁礼; 张文韬; 高宇珩; 阚逸朗
Original assignee: Beijing Tiancai Technology Co ltd
Current assignee: Beijing Tiancai Technology Co ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-04-07

Abstract

The invention discloses a milk foaming device and a foamed milk manufacturing method, and belongs to the technical field of beverage processing. A milk foaming device comprises a milk supply component, a hot water supply component, a stirring component, a beverage cup, a sliding table and a control system. The invention adopts a mechanical stirring foaming mode to heat the raw milk and hot water to 40-50 ℃ for full stirring and foaming, and then makes the temperature of the foamed milk rise to 65 ℃ by supplementing hot water, thus completing the preparation of the foamed milk. The application of the invention ensures that the milk conveying pipeline is easy to replace and clean, thereby reducing pollution; the steam generating device is reduced, and the manufacturing cost is reduced; the milk quantity of the raw material is accurately measured, so that the stability of the milk foaming quality is ensured.

Description

Milk foaming device and foamed milk manufacturing method

Technical Field

The invention belongs to the technical field of beverage processing, and particularly relates to a milk foaming device and a foamed milk manufacturing method.

Background

The fancy coffee beverage is prepared from milk and milk foam, wherein the milk foam is foam formed by beating the milk, and the milk foam is blended with coffee to form the fancy coffee which is beautiful and delicious, so that the fancy coffee beverage is gradually favored by a plurality of people who love the coffee.

When the traditional full-automatic coffee machine is used for making milk foam, a milk source pipeline and a steam pipeline are connected in parallel by using a tee joint, fresh milk is sucked into the coffee machine pipeline by using negative pressure generated when high-pressure steam is sprayed out, and the fresh milk is mixed with hot air for foaming and is heated. In the process, fresh milk enters the steam pipeline and the nozzle with small apertures, and the milk source pipeline is not easy to disassemble, so that the milk source pipeline and the steam pipeline are thoroughly cleaned, a large amount of work is required, and the requirement on the skills of maintenance personnel is high.

The milk foaming method has the following problems: firstly, the milk foam is easy to adhere to the inner wall of the pipeline, so that bacteria are easy to generate or deteriorate, and the food safety problem is caused; but the steam generator is needed to provide steam, so that the manufacturing cost is increased; thirdly, the milk quantity cannot be accurately measured, so that the stability of the foaming quality cannot be controlled.

Therefore, when the full-automatic coffee machine adopting the foaming mechanism is applied to the field of vending machines needing to be deployed in a large quantity, burdensome maintenance cost is generated, and the practicability is lost. Therefore, the current vending type full-automatic coffee machine cannot provide milk and milk foam in a liquid milk foaming mode, and is difficult to produce fancy coffee with quality and taste similar to those of a coffee shop.

Disclosure of Invention

The invention mainly solves the technical problem of providing a milk foaming device and a method for manufacturing foamed milk, which reduce a steam generating device so as to reduce the manufacturing cost, are easy to replace and clean a milk supply pipeline so as to avoid the pollution of the milk supply pipeline, accurately measure the milk quantity so as to ensure the stability of the milk foaming quality, thereby enabling a vending type full-automatic coffee machine to use a liquid milk source and manufacture high-quality milk foam, and improving the manufacturing level of fancy coffee.

In order to achieve the above object, the first technical solution adopted by the present invention is: a milk frothing apparatus, comprising:

the beverage cup is a container for the foaming process of the raw milk;

a milk supply unit for supplying the raw milk required for the raw milk frothing process to the drinking cup;

a hot water supply unit which delivers hot water required for the raw milk frothing process to the drinking cup;

a stirring member that stirs the raw milk and the hot water required for the foaming process to make the foamed milk, the stirring member being disposed above the rim of the beverage cup;

a control system which controls the opening or closing of the milk supply part, the hot water supply part and the stirring part, and sets the amount of raw milk and the amount of hot water required for the foaming process, the rotational speed of the stirring part, the operating time of the stirring part and the distance of downward movement of the stirring part; and

and at least two pipe orifices of the multi-way liquid outlet pipe are respectively connected with the milk supply component and the hot water supply component, and one pipe orifice is positioned right above the opening of the beverage cup.

Preferably, the beverage cup further comprises a sliding table, the sliding table is arranged above the beverage cup and comprises a sliding block connected with the stirring component, and when the sliding block moves up and down, the stirring component moves synchronously.

Preferably, the slide table further includes:

the motor is used for controlling the sliding table sliding block to move up and down, the motor is electrically connected with the control system, and the power and the stroke of the motor are set by the control system; and

the lead screw is used for driving the sliding block to synchronously move up and down, the upper portion of the lead screw is in threaded connection with the motor, and the middle portion of the lead screw is connected with the sliding block.

Preferably, the stirring member includes:

the stirring motor is used for adjusting the mixing speed of the raw milk and the hot water and is arranged on the sliding block; and

the stirrer is used for mixing the raw milk and the hot water, and is vertically arranged on the stirring motor and positioned right above the mouth of the beverage cup.

Preferably, the stirrer is a stirring rod.

Preferably, the milk supply unit includes:

a refrigerator for controlling the temperature of the raw milk;

the milk storage tank is used for storing the raw milk and is placed in the refrigerator;

the liquid level sensor is used for detecting the amount of the raw milk in the milk storage tank and is connected with the control system;

the milk conveying pipe conveys the raw milk to the beverage cup, one end of the milk conveying pipe is provided with an opening and is positioned at the bottom of the milk storage tank, and the other end of the milk conveying pipe is communicated with the multi-way liquid outlet pipe; and

the peristaltic pump provides power for conveying the raw milk, is connected with the milk conveying pipe, and is electrically connected with the control system through a pump head.

Preferably, the milk conveying pipe is a flexible pipe made of food-grade materials, and the protein content and the fat content in the raw milk are both greater than 6%.

Preferably, the hot water supply part includes:

the instant heating type water heater is used for generating hot water required by the raw milk foaming process and is electrically connected with the control system; and

and the hot water pipe is used for conveying the hot water, one end of the hot water pipe is connected with the instant water heater, the other end of the hot water pipe is communicated with the multi-way liquid outlet pipe, and the hot water pipe is a flexible pipe made of food-grade materials.

The second technical scheme adopted by the invention is as follows: a method for preparing foamed milk is characterized by comprising the following steps:

determining the production quantity of the foamed milk, determining the quantity of the foamed milk to be produced according to the requirements of drinkers, and selecting a beverage cup with corresponding capacity;

raw milk is conveyed, and the raw milk required in the production process of the foamed milk is conveyed to the liquid outlet pipe by the milk supply component and then conveyed to the beverage cup;

hot water is supplied, and the hot water required in the milk foaming production process is conveyed to the multi-way liquid outlet pipe by the hot water supply component and further conveyed to the beverage cup;

stirring and foaming, namely stirring the raw milk and hot water required in the manufacturing process of the foamed milk by a stirring part to manufacture the foamed milk; and

the method comprises the steps of setting the consumption of raw materials, calculating the quantity of the raw milk and the first hot water quantity required by milk foaming at 40-50 ℃ by a control system according to the production quantity of the foamed milk, the temperature of the raw milk and the temperature of the hot water, further diluting the milk foamed at 40-50 ℃ and heating the milk to 65 ℃, the rotating speed of the stirring component, the running time of the stirring component and the downward moving distance of the stirring component.

Preferably, the method further comprises the sliding table sliding block moving step: and a sliding table sliding block connected with the stirring component is moved up and down above the beverage cup, so that the stirring component is driven to move synchronously.

Preferably, the sliding table sliding block moving step further includes:

running a motor, wherein the motor in the sliding table runs according to the power and the stroke set by the control system; and

the rotary screw rod is in threaded connection with the motor, driven by the rotation of the motor, synchronously rotates with the motor, and then drives the sliding table sliding block connected to the rotary screw rod to slide up and down.

Preferably, the stirring foaming step comprises:

starting a stirring motor, when the sliding table stops moving downwards and is static, the stirring part stops moving downwards and is static at the same time, and starting the stirring motor arranged on the sliding table, wherein the stirring motor operates according to the set rotating speed and time;

stirring raw milk to foam, vertically installing a stirrer on the stirring motor to extend into the beverage cup, stirring and mixing the raw milk and first hot water, and heating the raw milk to 40-50 ℃ for foaming; and

and cleaning the stirrer, turning off the stirring motor, lifting the stirrer, washing the stirrer by using the added second hot water, further diluting the milk foamed at the temperature of 40-50 ℃, and heating to 65 ℃ to obtain the foamed milk.

Preferably, the stirrer is a stirring rod.

Preferably, the step of delivering raw milk comprises:

controlling the temperature of the raw milk, storing the raw milk in a milk storage tank in a refrigerator, and adjusting the temperature of the refrigerator to keep the temperature of the raw milk stable;

detecting and controlling the amount of raw milk, detecting the change of the amount of the raw milk in the milk storage tank by adopting a liquid level sensor, and transmitting the change information of the amount of the raw milk to the control system, wherein the control system adjusts and controls the amount of the raw milk; and

the raw milk is conveyed, under the control of the control system, the power is provided by a peristaltic pump, and the raw milk is conveyed to the beverage cup by a milk conveying pipe.

Preferably, the supplying of hot water step includes:

making hot water, wherein the instant heating type water heater generates the hot water required by the raw milk foaming process under the control of the control system; and

and hot water is conveyed, and the hot water generated by the instant heating type water heater is conveyed to the beverage cup through a hot water pipe.

Preferably, the protein and fat content in the foamed milk is more than or equal to 3 percent.

The invention has the beneficial effects that: the application of the invention ensures that the milk channel is completely connected by the detachable hose, thus being easy to replace and clean and reducing the pollution of the milk pipeline; the steam generating device is reduced, and the manufacturing cost is reduced; the peristaltic pump is utilized to accurately measure the milk quantity, so that the stability of the milk foaming quality is ensured.

Drawings

FIG. 1 is a schematic view of a milk frothing apparatus according to the present invention;

the parts in the drawings are numbered as follows: 1-instant heating type water heater, 2-hot water pipe, 3-milk conveying pipe, 4-peristaltic pump, 5-refrigerator, 6-milk storage tank, 7-liquid level sensor, 8-control system, 9-beverage cup, 10-multi-way liquid outlet pipe, 11-stirring rod, 12-stirring motor, 13-slide block, 14-lead screw and 15-motor.

Detailed Description

The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the invention.

It should be noted that the terms "first" and "second" in the claims and the description of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

The milk foam is generated because protein and fat have larger surface tension in a certain temperature area, and are fully mixed with air when being impacted mechanically, so that a large amount of foam can be formed. When the fancy coffee is made, the thickness, the stability and the density (fineness) of the milk foam are important indexes for measuring the quality of the fancy coffee, and the taste and the appearance of the fancy coffee are directly influenced. Usually, high quality fancy coffee milk foam is produced by using fresh milk (protein and fat content is higher than 3%), special equipment and apparatus and experienced personnel, and controlling the foaming temperature range (40-50 ℃ in general).

The invention adopts a mechanical stirring foaming device, wherein milk foam is formed by rotating a stirrer in a container filled with milk with high protein content and fat content at a proper speed, air is quickly mixed and mixed into the milk to form thick milk foam, and hot water is further added into the milk after the milk foam is formed to heat the milk foam so as to further develop the milk foam to a desired thickness and improve the uniformity in the temperature change process. Meanwhile, the invention selects high-concentration liquid milk as a special milk source, the protein concentration and the fat concentration in the milk source are both more than 6 percent, thereby leading the liquid milk to form thick and stable foam in a wider temperature area, and the protein content and the fat content in the manufactured foaming milk are both more than 3 percent.

Fig. 1 shows a structure of a milk foaming device, which mainly comprises: the system comprises an instant heating type water heater 1, a hot water pipe 2, a milk conveying pipe 3, a peristaltic pump 4, a refrigerator 5, a milk storage tank 6, a liquid level sensor 7, a control system 8, a beverage cup 9, a multi-way liquid outlet pipe 10, a stirring rod 11, a stirring motor 12, a sliding block 13, a lead screw 14 and a motor 15.

The tankless water heater 1 and the hot water pipe 2 constitute a hot water supply unit. One end of the hot water pipe 2 is communicated with the instant water heater 1, the other end is communicated with one pipe orifice of the multi-way liquid outlet pipe 10, and a liquid outlet of the multi-way liquid outlet pipe 10 is positioned right above the mouth of the beverage cup. The hot water pipe 2 is made of a flexible pipe made of food-grade materials, so that the sanitation of hot water is guaranteed, and the maintenance and the replacement are convenient.

The refrigerator 5, the milk storage tank 6, the liquid level sensor 7, the milk conveying pipe 3 and the peristaltic pump 4 form a milk supply component. The liquid level sensor is installed on the milk storage tank 6, the milk storage tank 6 is placed in the refrigerator 5, openings are formed in the top of the milk storage tank 6 and the top of the refrigerator 5 for the milk conveying pipe 3 to penetrate through, one end of the milk conveying pipe 3 extends into the bottom of the milk storage tank 6, and the other end of the milk conveying pipe 3 penetrates through the milk storage tank 6 and the refrigerator 5 and then is communicated with a pipe opening of the multi-way liquid outlet pipe 10. The milk conveying pipe 3 is a flexible pipe made of food-grade materials and matched with the peristaltic pump. When the used milk conveying pipe 3 needs to be cleaned, the foamed milk can be continuously made by disassembling and cleaning the used milk conveying pipe or replacing a clean milk conveying pipe 3 without other complicated operations.

The stirring rod 11 and the stirring motor 12 constitute a stirring member. The stirring rod 11 is vertically arranged on the stirring motor 12, and the stirring motor 12 is arranged on the sliding block 13. The stirring rod 11 may also be exchanged for other forms of stirrer, such as a propeller stirrer, a turbine stirrer, a paddle stirrer, etc.

The sliding block 13, the lead screw 14 and the motor 15 form a sliding table in the invention, the upper part of the lead screw 14 is in threaded connection with the motor 15, the middle part of the lead screw 14 is connected with the sliding block 13, and the motor 15 is electrically connected with the control system 8. The control system 8 regulates and controls the operation of the motor 15 according to the making program of the foamed milk, so as to regulate and control the up-and-down moving distance of the sliding block 13. The slider 13 slides with the rotation of the lead screw 14. And then the stirring motor 12 and the stirring rod 11 are driven to synchronously move up and down.

The control system 8 is electrically connected with the instantaneous water heater 1, the peristaltic pump 4, the liquid level sensor 7, the stirring motor 12 and the motor 15. The control system 8 can control the on and off of the instantaneous water heater 1, the peristaltic pump 4, the stirring motor 12 and the motor 15. The control system 8 can set and control the heating power, the flow rate and the water outlet time of the instantaneous water heater 1 so as to control the temperature of the hot water and the water outlet amount. The control system 8 can set and control the rotation speed and the rotation time of the peristaltic pump 4 so as to control the flow rate and the flow rate of the raw milk in the milk conveying pipe 3. The control system 8 can detect the change of the storage amount of the raw milk in the milk storage tank 6 through the liquid level sensor 7 so as to monitor the use condition of the raw milk, and further can regulate and control the amount of the raw milk. The control system 8 can set and control the power, the rotating speed and the running time of the stirring motor 12 so as to control the rotating speed and the stirring time of the stirring rod 11, thereby controlling the mixing condition of the raw milk, the hot water and the air when the milk is foamed. The control system 8 can set and control the power and stroke of the motor 15 to adjust the speed and distance of the up and down movement of the slider 13, and further adjust the length of the stirring rod 11 extending into the drinking cup 9.

The control system 8 can also calculate and set the amount of raw milk needed for a cup of 65 ℃ foamed milk according to the production amount of the foamed milk, the temperature of the raw milk (the temperature of the refrigerator) and the temperature of the hot water (generally controlled at 70-90 ℃). And simultaneously calculating and setting the hot water amount (first hot water amount) required for heating the raw milk required for foaming a cup of milk at 65 ℃ to 40-50 ℃ and the hot water temperature and the hot water amount (second hot water amount) required for further heating the milk subjected to foaming at 40-50 ℃ to 65 ℃.

The operation of a milk frothing apparatus according to the invention is described in detail below with reference to fig. 1:

the operation steps of the invention are as follows:

firstly, raw milk is put into a milk storage tank 6, and then the milk storage tank 6 is put into a refrigerator 5 with a fresh-keeping temperature (such as 4 ℃). Adding purified water into the instant water heater 1, starting the instant water heater 1, and heating the purified water to 70-80 ℃.

Secondly, according to the production quantity of the foamed milk selected by a drinker, the temperature of the raw milk (the temperature set by the refrigerator 5) and the temperature of hot water (for example, 80 ℃), the control system 8 calculates and sets the amount of hot water (first amount of hot water) required for heating the raw milk to 40-50 ℃, and calculates the temperature of the hot water and the amount of hot water (second amount of hot water) required for further diluting and heating the milk foamed at 40-50 ℃ to 65 ℃ for one cup of the foamed milk.

Thirdly, selecting a beverage cup 9 with proper capacity, placing the beverage cup 9 under a stirring rod 11, starting a peristaltic pump 4 in a milk supply component under the regulation and control of a control system 8, and adding the required raw milk into the beverage cup 9 through a milk conveying pipe and a multi-way liquid outlet pipe by the peristaltic pump 4 according to the rotating speed and the operating time set by the control system 8.

Fourthly, under the regulation and control of the control system 8, the motor 15 in the sliding table is started, the motor 15 runs according to the power and the stroke set by the control system 8, and the screw 14 rotates, so that the sliding block 13 in the sliding table is driven to move downwards, the stirring rod 11 is further driven to move downwards, and the stirring rod 11 extends below the liquid level of the raw milk but does not contact the beverage cup 9.

And fifthly, the control system 8 regulates and controls the motor 15 to stop running, so that the sliding block 13 in the sliding table stops moving, the control system 8 turns off the peristaltic pump 4 in the milk supply part, turns on the stirring motor in the stirring part, and the stirring rod 11 starts stirring the raw milk.

Sixthly, under the regulation and control of the control system 8, the hot water pipe 2 in the hot water supply component is opened, hot water passes through the hot water pipe and the multi-way liquid outlet pipe, the hot water is added into the beverage cup 9 according to the first hot water quantity, so that the temperature of the raw milk is raised to 40-50 ℃, and the raw milk and the hot water are uniformly mixed and foamed by the stirring rod 11.

Seventhly, under the regulation and control of the control system 8, the sliding block 13 in the sliding table moves upwards, so that the stirring rod 11 is driven to move upwards, hot water is added into the beverage cup 9 according to the second hot water amount, the temperature of the foamed milk is increased to 65 ℃, and meanwhile, the stirrer is washed by the hot water.

Eighthly, after the stirring rod 11 rises above the mouth of the beverage cup, under the regulation and control of the control system 8, the motor 15 in the sliding table, the stirring motor 12 in the stirring part and the instant water heater 1 in the hot water supply part are closed, the foaming process is finished, and the preparation of one cup of foamed milk is finished.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to other related technical fields, are included in the scope of the present invention.

Claims

1. A milk frothing apparatus, comprising:

the beverage cup is a container for the foaming process of the raw milk;

2. The milk frothing apparatus of claim 1, further comprising a sliding table, wherein the sliding table is disposed above the beverage cup, the sliding table includes a slider connected to the stirring component, and the stirring component moves synchronously when the slider moves up and down.

3. The milk frothing apparatus of claim 2, wherein the slide table further comprises:

4. Milk frothing apparatus as claimed in claim 2 in which the whisking element comprises:

5. Milk frothing apparatus as claimed in claim 4 in which the agitator is a stirring bar.

6. Milk frothing apparatus as claimed in claim 1 in which the milk supply means comprises:

a refrigerator for controlling the temperature of the raw milk;

7. A milk frothing apparatus as claimed in claim 6 in which the milk delivery tube is a flexible tube of food grade material, the raw milk having a protein content and a fat content of > 6%.

8. Milk frothing apparatus as claimed in claim 1 in which the hot water supply means comprises:

9. A method for preparing foamed milk is characterized by comprising the following steps:

10. The method for producing frothed milk according to claim 9, further comprising a step of moving the slide table slider: and a sliding table sliding block connected with the stirring component is moved up and down above the beverage cup, so that the stirring component is driven to move synchronously.

11. The method for producing frothed milk according to claim 10, wherein the step of moving the slide table further comprises:

12. The method for producing frothed milk according to claim 9, wherein the whipping step comprises:

13. The method of claim 12, wherein the agitator is a stirring rod.

14. The method for producing frothed milk according to claim 9, wherein the step of feeding the raw milk comprises:

15. The method for making foamed milk according to claim 14, wherein the milk tube is a flexible tube made of food grade material, and the protein content and the fat content of the raw milk are both > 6%.

16. The method for producing frothed milk according to claim 9, wherein said step of supplying hot water comprises:

17. The method for producing frothed milk according to any one of claims 9 to 16, wherein the contents of protein and fat in the frothed milk are both equal to or more than 3%.