CN209629482U - Multi-tea brewing machine - Google Patents

Abstract

The utility model belongs to drink preparation technical field, disclose a kind of more tea product brewing machines, including casing, water storage cavity, beverage making cavity, heating device, pumping installations and intelligent controlling device are respectively equipped in casing, pumping installations and heating device are each provided in the connecting pipe between water storage cavity and beverage making cavity, pumping installations can carry out quantitative water supply to beverage making cavity, and kettle placement section is equipped with below beverage making cavity, and kettle placement section bottom is equipped with attemperator；Intelligent controlling device is electrically connected with heating device, pumping installations and attemperator respectively, and the start and stop by controlling the heating temperature of water, hot water capacity, brewing time and attemperator be automatically performed the heating of water, tea product brewing and keeping the temperature.The utility model integrates water storage cavity, beverage making cavity, heating device, and have heat insulation function, can intelligent control water heating temperature, hot water capacity and brewing time, and the heating of water can be automatically performed, tea product brewing and keeping the temperature, more convenient to use.

Description

Multi-tea brewing machine

technical field

The utility model belongs to the technical field of beverage preparation, in particular to a multi-tea brewing machine.

Background technique

Drinking tea is a common way of drinking water in China. There are many kinds of tea, and the brewing temperature and brewing time of each tea are different. In addition to drinking regular green tea and black tea, contemporary young people also like to brew various scented teas , and a combination of scented teas. During the whole process of making tea, it is necessary to use a heating device to heat the water to a certain temperature, and then use a tea brewing device to brew it, which is rather cumbersome, and different tea products require different brewing methods to obtain the best taste. It is difficult for most ordinary users to master various brewing methods, so many young people are discouraged from making tea.

Utility model content

The purpose of the utility model is to overcome the deficiencies of the prior art and provide a multi-tea brewing machine integrating heating, brewing and heat preservation functions, which can realize automatic control and is more convenient to use.

In order to achieve the above purpose, the utility model provides a multi-tea brewing machine, which includes a casing, and the casing is respectively equipped with a water storage chamber, a brewing chamber, a heating device, a pumping device and an intelligent control device. The water storage chamber and the brewing chamber are connected by a connecting pipe, the pumping device and the heating device are both arranged on the connecting pipe, and the pumping device can quantitatively supply water to the brewing chamber, A kettle placement part is provided under the brewing cavity, and a heat preservation device is provided at the bottom of the kettle placement part;

The intelligent control device is electrically connected with the heating device, the pumping device and the heat preservation device respectively, and the intelligent control device is suitable for automatically controlling the heating temperature of the water, the capacity of the hot water, the brewing time and the start and stop of the heat preservation device. Complete the heating of water, brewing and heat preservation of tea products.

Preferably, the heating device is an instant heat pipe, including an inner pipe and an outer pipe, the outer wall of the outer pipe is provided with a heating layer, and a water flow channel is formed between the inner pipe and the outer pipe.

Preferably, the heating device is a heating tank.

Preferably, the water storage chamber is detachably arranged in the casing, the bottom of the water storage chamber is provided with a water outlet connected to the water inlet end of the connecting pipe, and the water outlet is provided with a sealing water structure.

Preferably, the water sealing structure includes a piston rod, a step is provided in the water outlet, a seal is provided on the top of the piston rod, the seal is located on the upper part of the step, and a limit seat is provided at the bottom of the piston rod A compression spring is sheathed on the piston rod between the bottom of the step and the limiting seat, and the sealing member is pressed against the step by the compression spring to close the water outlet.

Preferably, an ejection structure is provided directly below the water sealing structure, the ejection structure includes a ejector rod and a pipe joint, the pipe joint is connected to the water inlet end of the connecting pipe, and the ejection structure is suitable for The piston rod is pushed out to open the water outlet.

Preferably, the brewing chamber includes a hot water chamber, and a tea-water separation device is detachably installed in the hot water chamber, and the water outlet end of the connecting pipe penetrates and is fixed on the inner wall of the hot water chamber, and is located on the inner wall of the hot water chamber. The upper part of the tea-water separation device.

Preferably, the tea-water separation device is a hollow cylindrical mesh structure or a hollow cylindrical structure with filter holes at the bottom.

Preferably, the heat preservation device includes a heat conduction plate, and at least one PTC heater is installed at the bottom of the heat conduction plate.

Preferably, two PTC heaters with different constant temperatures are installed at the bottom of the heat conducting plate.

Preferably, the intelligent control device includes a temperature sensor, a control panel and a control unit, the temperature sensor is arranged in the heating device, the control panel is arranged on the side wall of the casing, and the control panel is suitable for Setting and displaying water heating temperature, brewing time, hot water capacity and selection of brewing parameters for different tea products pre-stored in said control unit adapted to receive information input through said control panel And the information detected by the temperature sensor, and control the work of the control panel, the heating device, the pumping device and the heat preservation device, so as to automatically complete the heating of water, brewing and heat preservation of tea products.

Preferably, the intelligent control device further includes an RFID card reader, and the RFID card reader is electrically connected to the control unit.

Preferably, a drinking port is provided at the bottom of the brewing chamber, and a switching valve is provided at the drinking port, and the switching valve is electrically connected to the control unit.

Preferably, a pressure sensor is provided at the bottom of the kettle placing part, the pressure sensor is electrically connected to the control unit, and the control unit is adapted to control the on-off valve and the control unit by receiving information detected by the pressure sensor. Start and stop of the heat preservation device.

Preferably, the pumping device is a metering pump.

The utility model integrates the water storage chamber, the brewing chamber and the heating device together, and has a heat preservation function, which makes the brewing of tea products more convenient, and through intelligent control, different heating methods can be adopted according to different types of tea products. Temperature, hot water capacity and brewing time, in order to brew different drinks with the best taste, and can automatically complete the heating of water, brewing and heat preservation of tea products, which is more convenient to use.

Other features and advantages of the present utility model will be described in detail in the following specific embodiments.

Description of drawings

The accompanying drawings constituting a part of the utility model are used to provide a further understanding of the utility model, and the schematic implementation of the utility model and its description are used to explain the utility model, and do not constitute an improper limitation of the utility model. In the attached picture:

Fig. 1 is the structural representation of an embodiment of the utility model;

Fig. 2 is the right view of Fig. 1;

Fig. 3 is a schematic structural view of a heating device in an embodiment of the present invention;

Fig. 4 is the top view of Fig. 3;

Fig. 5 is a cross-sectional view of the water sealing structure in an embodiment of the present invention.

Explanation of reference signs

1 chassis

2 water storage cavity 21 water outlet

211 steps

3 pumping device

4 heating device 41 outer tube

42 heating layer 43 water flow channel

44 inner tube

5 heat preservation device

6 kettles

7 Kettle place

8 brewing chambers 81 hot water chambers

811 Drinking port 82 Tea separation device

821 filter holes

9 connecting pipes 91 water outlet

92 water inlet

10 control panel

11 Sealing water structure 111 Seals

112 piston rod 113 compression spring

114 limit seat

12 ejector structure 121 ejector rod

122 pipe connector

Detailed ways

In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top", "bottom" etc. are based on the The orientation or positional relationship is only for the convenience of describing the utility model and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a reference to the utility model. limits.

In the description of the present utility model, it should be noted that unless otherwise specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, or It is an integral connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two elements or the interaction relationship between two elements. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.

The specific embodiment of the utility model will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the utility model, and are not intended to limit the utility model.

As shown in Figure 1 and Figure 2, the utility model provides a multi-tea brewing machine, including a casing 1, the casing 1 is respectively provided with a water storage chamber 2, a brewing chamber 8, a heating device 4, The pumping device 3 and the intelligent control device, the water storage chamber 2 and the brewing chamber 8 are connected through a connecting pipe 9, the pumping device 3 and the heating device 4 are both arranged on the connecting pipe 9, The pumping device 3 can quantitatively supply water to the brewing chamber 8, a kettle placement part 7 is provided under the brewing chamber 8, and a heat preservation device 5 is provided at the bottom of the kettle placement part 7; the intelligent control device They are respectively electrically connected to the heating device 4, the pumping device 3 and the heat preservation device 5, and the intelligent control device is suitable for automatically completing the process by controlling the heating temperature of the water, the hot water capacity, the brewing time and the start and stop of the heat preservation device 5. Heating of water, brewing and keeping warm of tea.

Wherein, the kettle placement part 7 is arranged on the outer wall of the casing 1 and is recessed toward the inside of the casing 1 to facilitate the placement and removal of the kettle 6 . Of course, the kettle placement part 7 can also be arranged inside the casing 1 , and a small door that can be opened is provided on the casing 1 to facilitate the taking out of the kettle 6 .

In one embodiment, as shown in Figures 3 and 4, the heating device 4 is a heat pipe, comprising an inner tube 44 and an outer tube 41, the outer wall of the outer tube 41 is provided with a heating layer 42, and the inner tube 44 A water flow channel 43 is formed between the outer tube 41 and the outer tube 41 .

When heating is performed by the instant heat pipe, the pumping device 3 and the instant heat pipe work at the same time, and rapid heating of the water can be realized during the pumping process. Wherein, the instant heat pipe is a rare-earth thick-film heating pipe, that is, a rare-earth thick-film circuit is arranged on the outer wall of the stainless steel outer pipe as the heating layer 42, so as to heat the water flow in the outer pipe 41. The rare-earth thick-film heating pipe has a high thermal power density, High thermal efficiency, small size, adjustable water temperature and other advantages.

Because the traditional instant heat pipe is to set a heating layer outside the stainless steel pipe for heating, directly pass water inside the stainless steel pipe to make the water heated, and adjust the outlet water temperature by adjusting the flow of water and the heating power of the heating layer. This structure is easy to process, but has a large water storage capacity. Generally, there is about 30-50ml of water storage according to the diameter and length of the pipe. Since the pumping device 3 and the heat pipe start working at the same time, the outlet water temperature is gradually increased. process. That is, the larger the water storage capacity in the heat pipe, the slower the temperature rises, and the lower the water temperature of the first glass of water in the kettle 6, this phenomenon will affect the temperature of making tea.

To solve this problem, the utility model adds an inner tube 44 in the outer tube 41 of the instant heat pipe, and makes water flow from the ring structure between the outer tube 41 and the inner tube 44, thereby reducing the water storage capacity in the instant heat pipe, Increase the temperature of the first glass of water.

As a modification of the above embodiment, the heating device 4 may also be a heating tank.

When heating through the heating tank, first pump the cold water in the water storage chamber 2 quantitatively into the heating tank through the pumping device 3, then control the heating tank to heat, and then transport the heated hot water to the heating tank through the pumping device 3 Tea is brewed in the brewing cavity 8 .

In one embodiment, the water storage chamber 2 is detachably arranged in the casing 1, and the bottom of the water storage chamber 2 is provided with a water outlet 21 communicating with the water inlet end 92 of the connecting pipe 9 , the water outlet 21 is provided with a water sealing structure 11 .

Specifically, as shown in FIG. 5 , the water sealing structure 11 includes a piston rod 112, a step 211 is provided in the water outlet 21, a seal 111 is provided on the top of the piston rod 112, and the seal 111 is located at the The upper part of the step 211, the bottom of the piston rod 112 is provided with a limit seat 114, the piston rod 112 between the bottom of the step 211 and the limit seat 114 is sleeved with a compression spring 113, and the seal 111 passes through the The compression spring 113 is pressed against the step 211 to close the water outlet 21 .

In addition, a ejection structure 12 is provided directly below the water sealing structure 11, and the ejection structure 12 includes a ejector rod 121 and a pipe joint 122, and the pipe joint 122 is connected to the water inlet end 92 of the connecting pipe 9, The ejection structure 12 is suitable for ejecting the piston rod 112 to open the water outlet 21 .

Wherein, the ejection structure 12 is fixed in the casing 1, when the water storage chamber 2 is disassembled from the casing 1, due to the action of the compression spring 113, the sealing member 111 is compressed. Close on the step 211 to close the water outlet 21, so as to prevent the water in the water storage chamber 2 from flowing out, so that the water storage chamber 2 can be filled with water and then installed in the casing 1; , the water storage chamber 2 is placed in the casing 1, and due to the gravity of the water in the water storage chamber 2, the water outlet 21 of the water storage chamber 2 is pressed against the ejection structure 12, so that the ejector rod 121 When the piston rod 112 is pushed up, the seal 111 is separated from the step 211 to open the water outlet 21 , so that the water outlet 21 communicates with the water inlet 92 of the connecting pipe 9 . Wherein, the sealing member 111 is a silicone ring.

In one embodiment, the brewing chamber 8 includes a hot water chamber 81, and a tea-water separation device 82 is detachably arranged in the hot water chamber 81, and the water outlet 91 of the connecting pipe 9 passes through and is fixed on the On the inner wall of the hot water cavity 81 and located on the upper part of the tea-water separating device 82 .

Thus, the tea can be placed in the tea separation device 82, and the hot water can be transported to the tea separation device 82, and the tea filtered by the tea separation device 82 can enter the hot water chamber 81 to realize the separation of tea products and tea water. , so that the tea brewing time can be effectively guaranteed, and it can avoid mixing tea and tea water to affect drinking, and avoid tea products soaking in tea water for a long time to affect the taste.

In addition, the tea-water separating device 82 can be disassembled from the hot water chamber 81, so as to facilitate cleaning away the tea residue after brewing. Specifically, bosses 812 are respectively provided on the two side walls of the hot water chamber 81 , and flanges 822 are provided on the top of the tea-water separation device 82 , and the flanges 822 are stuck on the protrusions on both sides of the hot water chamber 81 . On the platform 812, the tea-water separating device 82 is placed in the hot water chamber 81, and the tea-water separating device 82 can be taken out from the hot water chamber 81 at any time.

Wherein, the tea-water separating device 82 is a hollow cylindrical mesh structure or a hollow cylindrical structure with a filter hole 821 at the bottom, which is convenient for holding tea and filtering tea. A handle can also be provided on the top of the tea-water separation device 82 , and the disassembled tea-water separation device 82 can be taken out through the handle, which is convenient and hygienic.

In one embodiment, the heat preservation device 5 includes a circular heat conduction plate, at least one PTC heater is installed on the bottom of the heat conduction plate, and the PTC is a positive temperature coefficient thermistor.

Preferably, two PTC heaters with different constant temperatures are installed at the bottom of the heat conducting plate.

The tea water is kept warm by the PTC heater to prevent the tea water from becoming cold if it has not been drunk for a long time. By setting two PTC heaters with different constant temperatures, not only can the tea be kept warm, but also different heat preservation temperatures can be selected to meet the needs of different customers.

In one embodiment, the intelligent control device includes a temperature sensor, a control panel 10 and a control unit, the temperature sensor is arranged in the heating device 4, and is used to detect the temperature of water in the water flow channel 43, and the control panel 10 is located on the side wall of the casing 1, and the control panel 10 is suitable for setting and displaying the heating temperature of water, brewing time, hot water capacity and selection of different tea products pre-stored in the control unit. Brewing parameters, for example, a display screen and various setting buttons are integrated on the control panel 10, and a working status indicator light can also be provided. According to the display of the indicator light, the operating status of the brewing machine can be clearly known. The bubble machine is in heating, brewing or heat preservation; the control unit is adapted to receive the information input through the control panel 10 and the information detected by the temperature sensor, and control the control panel 10, the heating The work of the device 4, the pumping device 3 and the heat preservation device 5 is to automatically complete the heating of water, brewing and heat preservation of tea products.

Generally speaking, when brewing tea, the temperature of the hot water used for brewing, the time of brewing, and the capacity of the hot water will all affect the taste of the tea. The tea brewed by the brewing parameters is considered to have the best taste. Therefore, in this embodiment, the user can select the brewing parameters of different tea products pre-stored in the control unit through the control panel 10 to obtain the best brewing parameters. Good taste. Of course, different users have their own favorite brewing methods. In order to meet the different needs of users, users can also set their favorite brewing methods through the control panel 10 .

After the user has set the brewing parameters through the control panel 10, there is no need for manual operation. After the control unit receives the information input from the control panel 10, it automatically controls the heating device 4 and the pumping device 3 to work, and receives the information According to the water temperature information detected by the temperature sensor, when the water temperature reaches the set temperature, the heating device 4 is controlled to stop heating, and the hot water is pumped to the brewing chamber 8 through the pumping device 3, and after the set brewing time , so that the brewed tea automatically enters the kettle 6, and then controls the heat preservation device 5 to keep the tea in the kettle 6 warm. Through a series of intelligent controls, the heating of the water, the brewing of the tea and the heat preservation are automatically completed. It is more convenient to get up.

Preferably, the intelligent control device further includes an RFID card reader, and the RFID card reader is electrically connected to the control unit.

In addition to selecting the brewing parameters of different tea products pre-stored in the control unit through the control panel 10, the user can also obtain the brewing parameters of the tea to be brewed through the RFID card reader. An RFID tag with tea brewing information is set on or inside the packaging bag of the product, and the RFID tag is read by an RFID reader to obtain the brewing parameters of the tea product.

In one embodiment, a drink supply port 811 is provided at the bottom of the brewing chamber 8, and a switch valve is provided at the drink supply port 811, and the switch valve is electrically connected to the control unit.

Thus, after the set brewing time, the control unit controls the on-off valve to open, so that the brewed tea will automatically enter the kettle 6 .

In one embodiment, a pressure sensor is provided at the bottom of the kettle placing part 7, and the pressure sensor is electrically connected to the control unit, and the control unit is adapted to control the Switching valve and the start and stop of the heat preservation device 5.

Thus, on the one hand, the pressure sensor can detect whether the kettle 6 is placed in place, so as to avoid the kettle 6 being taken away during the operation of the brewing machine. When it is detected that the kettle 6 is not placed in place during the operation of the brewing machine, On the other hand, it can detect the change of the weight of the kettle 6, so as to detect whether there is tea in the kettle 6. When it detects that there is tea in the kettle 6, it can control and start the heat preservation device 5. When it detects that there is tea in the kettle 6, When there is no tea, the heat preservation device 5 can be controlled to be closed, thereby ensuring that the tea in the kettle 6 is effectively heat-preserved, and unnecessary heat preservation can be avoided, thereby saving electric energy.

In addition, a buzzer can also be provided on the casing 1, and the buzzer is electrically connected to the control unit. When the pressure sensor detects that the kettle 6 is not placed in place during the operation of the brewing machine, the buzzer can be controlled. An alarm is issued, thereby reminding the user to place the kettle 6 in place, so as to avoid that the tea brewing time is too long to affect the taste or the tea becomes cold.

In one embodiment, the pumping device 3 is a metering pump.

Thus, after the hot water capacity is set through the control panel 10 , the control unit can control the metering pump to pump hot water with the set capacity to the brewing chamber 8 .

In summary, the utility model integrates the water storage chamber 2, the brewing chamber 8, and the heating device 4 together, and has a heat preservation function, which makes the brewing of tea products more convenient, and through intelligent control, it can be used according to different Different types of tea products adopt different heating temperature, hot water capacity and brewing time in order to brew different drinks with the best taste, and can automatically complete the heating of water, brewing and heat preservation of tea products, which is more convenient to use.

The preferred embodiment of the utility model has been described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the specific details of the above-mentioned embodiment, and within the scope of the technical concept of the utility model, the technical solution of the utility model can be carried out in many ways. These simple modifications all belong to the protection scope of the present utility model.

In addition, it should be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way if there is no contradiction. The combination method will not be explained separately.

In addition, any combination of various implementations of the present invention can also be made, as long as they do not violate the idea of the present invention, they should also be regarded as the disclosed content of the present invention.

Claims (15)

1. A multi-tea brewing machine is characterized in that it comprises a casing (1), and the casing (1) is respectively provided with a water storage cavity (2), a brewing cavity (8), a heating device ( 4), the pumping device (3) and the intelligent control device, the water storage chamber (2) and the brewing chamber (8) are connected through a connecting pipe (9), the pumping device (3) and the The heating devices (4) are all arranged on the connecting pipe (9), the pumping device (3) can carry out quantitative water supply to the brewing chamber (8), and the brewing chamber (8) is provided with A kettle placement part (7), the bottom of the kettle placement part (7) is provided with a heat preservation device (5); The intelligent control device is electrically connected to the heating device (4), the pumping device (3) and the heat preservation device (5) respectively, and the intelligent control device is suitable for controlling the heating temperature of water, the capacity of hot water, brewing The heating of water, the brewing and heat preservation of tea products are automatically completed by the time and the start and stop of the heat preservation device (5). 2. The multi-tea brewing machine according to claim 1, characterized in that, the heating device (4) is an instant heat pipe, comprising an inner pipe (44) and an outer pipe (41), and the outer pipe (41 ) is provided with a heating layer (42) on the outer wall, and a water flow channel (43) is formed between the inner pipe (44) and the outer pipe (41). 3. The multi-tea brewing machine according to claim 1, characterized in that the heating device (4) is a heating tank. 4. The multi-tea brewing machine according to claim 1, characterized in that, the water storage chamber (2) is detachably arranged in the casing (1), and the water storage chamber (2) The bottom is provided with a water outlet (21) communicating with the water inlet end (92) of the connecting pipe (9), and the water outlet (21) is provided with a water sealing structure (11). 5. The multi-tea brewing machine according to claim 4, characterized in that, the water sealing structure (11) includes a piston rod (112), and a step (211) is provided in the water outlet (21), The top of the piston rod (112) is provided with a seal (111), the seal (111) is located on the top of the step (211), and the bottom of the piston rod (112) is provided with a limit seat (114). A compression spring (113) is sheathed on the piston rod (112) between the bottom of the step (211) and the limit seat (114), and the sealing member (111) is compressed on the piston rod (112) by the compression spring (113). on the step (211) to close the water outlet (21). 6. The multi-tea brewing machine according to claim 5, characterized in that, an ejection structure (12) is provided directly below the water sealing structure (11), and the ejection structure (12) includes a ejector rod (121) and a pipe joint (122), the pipe joint (122) is connected to the water inlet end (92) of the connecting pipe, and the ejection structure (12) is suitable for pushing the piston rod (112) out to open the water outlet (21). 7. The multi-tea brewing machine according to claim 1, characterized in that, the brewing chamber (8) includes a hot water chamber (81), and the hot water chamber (81) is detachably provided with The tea water separation device (82), the water outlet end (91) of the connecting pipe (9) penetrates and is fixed on the inner wall of the hot water chamber (81), and is located on the upper part of the tea water separation device (82). 8. The multi-tea brewing machine according to claim 7, characterized in that the tea-water separation device (82) is a hollow cylindrical mesh structure or a hollow cylindrical structure with filter holes (821) at the bottom. 9. The multi-tea brewing machine according to claim 1, characterized in that the heat preservation device (5) comprises a heat conduction plate, and at least one PTC heater is installed at the bottom of the heat conduction plate. 10. The multi-tea brewing machine according to claim 9, characterized in that two PTC heaters with different constant temperatures are installed at the bottom of the heat conducting plate. 11. The multi-tea brewing machine according to any one of claims 1 to 10, characterized in that, the intelligent control device includes a temperature sensor, a control panel (10) and a control unit, and the temperature sensor is arranged on the In the heating device (4), the control panel (10) is arranged on the side wall of the casing (1), and the control panel (10) is suitable for setting and displaying the heating temperature of water, brewing time, heating Water capacity and selection of brewing parameters of different tea products pre-stored in the control unit, the control unit is adapted to receive the information input through the control panel (10) and the information detected by the temperature sensor, and control The control panel (10), the heating device (4), the pumping device (3) and the heat preservation device (5) work to automatically complete the heating of water, brewing and heat preservation of tea products. 12. The multi-tea brewing machine according to claim 11, wherein the intelligent control device further comprises an RFID card reader, and the RFID card reader is electrically connected to the control unit. 13. The multi-tea brewing machine according to claim 11, characterized in that a drinking port (811) is provided at the bottom of the brewing chamber (8), and a switch is provided at the drinking port (811) valve, and the switch valve is electrically connected with the control unit. 14. The multi-tea brewing machine according to claim 13, characterized in that a pressure sensor is provided at the bottom of the kettle placement part (7), the pressure sensor is electrically connected to the control unit, and the control unit It is suitable for controlling the start and stop of the on-off valve and the heat preservation device (5) by receiving the information detected by the pressure sensor. 15. The multi-tea brewing machine according to claim 1, characterized in that the pumping device (3) is a metering pump.