CN217118154U

CN217118154U - Coffee machine

Info

Publication number: CN217118154U
Application number: CN202220762974.3U
Authority: CN
Inventors: 竹下清助
Original assignee: Shenzhen Keli Electrical Appliance Co ltd
Current assignee: Shenzhen Keli Electrical Appliance Co ltd
Priority date: 2022-04-02
Filing date: 2022-04-02
Publication date: 2022-08-05
Anticipated expiration: 2032-04-02

Abstract

The utility model provides a coffee machine, which comprises a machine body, a flow path which is arranged in the machine body and is used for supplying hot water to a filter cup and a flow path which is arranged in the machine body and is used for directly supplying hot water to a coffee cup and is used for adding hot water, wherein a corresponding electromagnetic valve A and an electromagnetic valve B are arranged in each flow path, and the structure is used for brewing a cup of coffee by controlling the switching time of the electromagnetic valve A and the electromagnetic valve B to execute the dropping filtration process and the hot water adding process; the trickling filtration rate is set within the range of 30-70%, and the 'primary maximum amount of supplied hot water' of the machine body is set to the amount of supplied hot water of the minimum trickling filtration rate of the machine body. The utility model discloses a setting is to the flow path of the hydrothermal trickling filtration process of filter bowl supply and to the flow path of the hot water process of interpolation of coffee bowl direct supply, disposes the solenoid valve at every flow path, carries out the trickling filtration process and adds the hot water process through the switching time of control solenoid valve.

Description

Coffee machine

Technical Field

The utility model belongs to the technical field of the coffee machine technique and specifically relates to a can drip through control and strain the coffee machine of volume and addition hot water volume.

Background

Manual coffee machines require the filter-holder to be refilled manually each time coffee is made, whereas automatic coffee machines are automatic. While coffee machines of the semi-automatic type allow both operations.

In particular, the operating systems of these coffee machines provide for the hot water to pass through a specific path when it contacts the ground coffee in order to brew. The resulting coffee beverage is influenced by different parameters used in the process.

Coffee machines currently on the market comprise a filter-holder that is manually connected by an operator to the infusion unit of the coffee machine. The filter-holder can be filled manually with ground coffee and subsequently connected to the infusion unit, or automatically only after the filter-holder has been correctly positioned on the infusion unit. In the latter case described above, the powdered coffee is then compressed, and the infusion unit then releases a predetermined quantity of water at a temperature and pressure that are optimal for preparing coffee with optimal organoleptic characteristics. In both cases, once the coffee has been prepared, the filter-holder is manually detached from the coffee machine and the spent powdered coffee is discarded. So that the filter holder can be reused for preparing another coffee.

An existing automatic coffee machine, such as the chinese patent publication No. CN102144887A, includes a brewing mechanism, a water inlet mechanism; the brewing mechanism is driven by a transmission motor to perform the functions of automatic rotation and automatic guiding, and the water inlet mechanism is driven by another stepping motor. The two sets of independent driving mechanisms are adopted, so that mechanical parts of the coffee machine are increased, the structure of the coffee machine is relatively complicated, mechanical faults are easy to occur, and the working stability of the coffee machine is reduced.

In order to solve the problem that the water inlet mechanism and the brewing mechanism of the existing automatic coffee machine are driven by two sets of independent driving mechanisms, the Chinese patent of invention with the publication number of CN103126533A discloses an automatic beverage brewing mechanism, which is provided with a cam, the tip part of the cam is propped against a thimble in a water inlet valve, when a brewing cavity moves from left to right in an arc shape, the cam is driven to rotate, and the thimble in the water inlet valve is propped against to switch a water inlet waterway.

Disclosure of Invention

To the deficiency of the prior art, the utility model provides a coffee machine.

The technical scheme of the utility model is that: a coffee machine comprises a machine body, a water tank, a heating tank, a cup holder and a filter cup holder, wherein the water tank, the heating tank, the cup holder and the filter cup holder are arranged in the machine body, the water tank and the heating tank are mutually connected through an electric pump by a water supply pipe, the heating tank is communicated with a dripping funnel through a hot water supply pipe, an electromagnetic valve A is arranged on the hot water supply pipe between the heating tank and the dripping funnel, the filter cup holder at the lower end of the dripping funnel is provided with a filter cup, filter paper is paved in the filter cup, and a coffee cup is placed on the cup holder at the lower end of the filter cup;

the lower end of the heating tank is also connected with an adding hot water pipe, the other end of the adding hot water pipe extends to the upper end of the coffee cup, and the adding hot water pipe is further provided with an electromagnetic valve B.

Preferably, the lower end of the dripping device is provided with a plurality of hot water supply ports.

Preferably, the machine body is also internally provided with a control panel, and the control panel is connected with the electric pump, the electromagnetic valve A and the electromagnetic valve B.

Preferably, the heating tank is composed of a heating tank container, a container cover and a heating body, and has a temperature sensor, a temperature controller and a temperature fuse.

Preferably, the container cover is provided with a water supply hole and an exhaust hole, and the bottom of the heating tank container is provided with a hot water supply hole and a hot water adding hole.

Preferably, the machine body is further provided with an operation panel, the operation panel comprises a power switch, a selection switch and an opening switch, and the selection switch can select the drip filtration rate of the coffee amount within the range of 30-70%.

Preferably, a check valve is provided on a water supply pipe between the heating tank and the electric pump.

Preferably, the exhaust hole is communicated with the exhaust port through an exhaust pipe.

The utility model discloses a dash coffee volume of 1 cup, will supply the water yield that 1 cup was used to the heating jar through the electric pump to after boiling, be used for partly hot water the process of cooking, be used for the trickling filtration process with partly hot water, be used for adding the hot water process with remaining hot water, thereby dash coffee. So that no residual hot water remains in the heating tank after the whole process is finished.

The utility model discloses a setting is provided with the flow path of hydrothermal trickling filtration process and is directly provided with the flow path of the interpolation hot water process of hot water to the coffee cup, disposes the solenoid valve at every flow path, carries out the trickling filtration process and adds the hot water process through the switching time of control solenoid valve to dash 1 cup of coffee.

The amount of coffee in 1 cup is the total of the amount of drip filtration and the amount of hot water added, the drip filtration rate is "drip filtration rate ═ drip filtration amount ÷ coffee amount in 1 cup", and the selective drip filtration rate of the machine body is set in the range of 30 to 70%. In this case, the amount of hot water added is 70 to 30% of the amount of 1 cup of coffee.

The amount of drip filtration selected is "amount of drip filtration ═ amount of coffee × selected drip filtration rate". The amount of hot water for trickling filtration of the selection trickling filtration rate can be supplied at once. However, when the trickling filtration rate is selected to be 70%, the amount of hot water supplied at one time becomes excessively large, and there is a problem that hot water overflows from the filter bowl. Therefore, the "maximum hot water supply amount at one time" of the machine body is set to the hot water supply amount of the minimum trickling filter rate of the machine body.

When the amount of hot water to be filtered is selected as the filtration rate, the amount of hot water is supplied "plural times", the amount of hot water is set to "one time of hot water supply amount × the number of hot water supplies". However, if the hot water supply amount is small at a time, the hot water does not spread over the entire leaked hot water supply port, and therefore, the hot water cannot be supplied to the entire coffee powder. Therefore, the "minimum amount of once-supplied hot water" is set to 10mL or more. However, when the amount of the hot water supplied per time is 10ml or less, the amount is not included in the above-mentioned "multiple times

When the coffee machine supplies hot water with a trickling filtration amount for a plurality of times, the coffee machine sets the primary hot water supply amount between the maximum primary hot water supply amount and the minimum primary hot water supply amount, and supplies hot water for a plurality of times at intervals of supplying hot water.

The utility model has the advantages that:

1. the utility model realizes the infusion of coffee and the addition of hot water by arranging two pipelines at the lower end of the heating tank, and ensures the accuracy of the trickling filtration rate by independent solenoid valve control;

2. the utility model can select corresponding operation through the operation panel and control the concentration of coffee through the control panel by selecting corresponding trickling filtration rate;

3. the utility model discloses a filter bowl frame can be dismantled to conveniently change the filter bowl, in addition, the utility model discloses simple structure, degree of automation is high;

4. the utility model discloses a setting is to the flow path of the hydrothermal trickling filtration process of filter bowl supply and to the flow path of the hot water process of interpolation of coffee bowl direct supply, disposes the solenoid valve at every flow path, carries out the trickling filtration process and adds the hot water process through the switching time of control solenoid valve.

Drawings

FIG. 1 is a schematic structural view of a coffee maker according to the present invention;

FIG. 2 is a top view of the heating tank of the present invention;

FIG. 3 is a longitudinal cross-sectional view of the heating tank of the present invention;

FIG. 4 is a configuration diagram of a hot water supply port of the drip filter of the present invention;

fig. 5 is a schematic structural view of the filter bowl of the present invention.

Fig. 6 is an example of an operation panel according to the present invention;

in the figure, 1-machine body, 2-operation panel, 3-power switch, 4-selection switch, 5-start switch, 6-water tank, 7-coffee cup, 8-filter cup holder, 9-filter cup, 10-filter paper, 11-coffee powder, 12-heating tank, 13-electric pump, 14-water supply pipe, 15-electromagnetic valve A, 16-electromagnetic valve B, 17-heating tank container, 18-container cover, 19-heating element, 20-temperature sensor, 21-temperature controller, 22-temperature fuse, 23-water supply hole, 24-exhaust hole, 25-hot water supply hole, 26-hot water addition hole, 27-hot water supply pipe, 28-hot water addition pipe, 29-hot water supply hole and 30-hot water addition hole, 31-exhaust port, 32-exhaust pipe, 33-control board, 34-one-way valve, 35-drip, 36-drip filter port, 37-cup holder.

Detailed Description

The following description of the embodiments of the present invention will be made with reference to the accompanying drawings:

in the present example, the meanings of the following terms used herein are explained.

"drip filtration" refers to supplying hot water to the coffee powder and extracting the coffee.

"amount of trickling" refers to the amount of hot water poured into the coffee powder for the purpose of extracting coffee. Wherein "amount of supplied hot water" is also used in the same sense.

"adding hot water" means pouring only hot water directly into the coffee cup.

"add hot water amount" refers to the amount of hot water that is poured directly into the coffee cup.

"amount of water used for 1 cup" refers to the amount of water needed to brew 1 cup of coffee. It is the sum of the amount of coffee and the amount of hot water absorbed by the coffee powder.

"coffee amount for 1 cup" is the sum of the amount of trickling and the amount of hot water added. Wherein "1 cup of coffee", or "coffee amount" is also used in the same sense.

"drip rate" means "drip rate ═ drip volume ÷ coffee volume".

The "steaming process" refers to a process of pouring about 20-40 mL of hot water into the coffee powder before the drip filtration process, and keeping for 10-60 seconds to make the coffee powder absorb water.

As shown in fig. 1, the present embodiment provides a coffee machine, the coffee machine includes a machine body 1, an operation panel 2 is disposed at an upper end of the machine body 1, and as shown in fig. 6, a power switch 3, a selection switch 4 and an on-switch 5 are disposed on the operation panel 2. The selection switch 4 can select the drip filtration rate of the coffee amount in the range of 30-70%. Alternatively, 100% trickling without hot water addition may be selected.

The detachable water tank 6 is arranged at the rear part of the machine body 1, and the coffee cup 7 can be placed on the cup holder 37 at the lower part of the front part of the machine body 1. The filter cup holder 8 is detachable, and the filter cup holder 8 can be taken down to place the filter cup 9. The filter paper 10 is placed in the filter cup 9, so that the coffee powder 11 is added.

In this embodiment, the water tank 6 and the heating tank 12 are connected to each other by a water supply pipe 14 through an electric pump 13. In order to allow the hot water to naturally fall, the heating pot 12, the filter cup 9, and the coffee cup 7 are arranged vertically from top to bottom.

An electromagnetic valve a15 and a drip filter 35 are disposed between the heating tank 12 and the bowl 9, and connected by a hot water supply pipe 27 to constitute a flow path for the drip filtration process. An electromagnetic valve B16 is also disposed between the heating tank 12 and the bowl 7, and connected by the hot water addition pipe 28 to constitute a flow path for hot water addition. By controlling the operation timing and operation time of the solenoid valve a15, hot water can be supplied during trickling. By controlling the operation timing and operation time of the solenoid valve B16, hot water can be supplied during hot water addition.

Fig. 2 and 3 show components of the heating tank 12. The heating tank 12 is composed of a heating tank container 17, a container cover 18 and a heating element 19, and has a temperature sensor 20, a temperature controller 21 and a temperature fuse 22. Further, a water supply hole 23 and an exhaust hole 24 are provided in the container cover 18, and a hot water supply hole 25 and a hot water addition hole 26 are provided in the bottom of the heating tank container 17.

In the present embodiment, a check valve 34 is preferably provided in the water supply pipe 14 between the heating tank 12 and the electric pump 13.

Preferably, the exhaust hole 24 is connected to the exhaust port 31 through an exhaust pipe 32.

This example illustrates an embodiment of the brewing process. Here, a case where the minimum 30% of the trickling filtration rate is selected with the coffee amount of 130mL and the boiling water amount of 20mL will be described. The power switch 3 is pressed to switch on the power supply, and the selection switch 4 is pressed to select the trickling filtration rate of 30%.

When the on switch 5 is pressed, the electric pump 13 is activated to supply hot water of an amount of 1 cup of water "150 mL ═ 130mL +20 mL" to the heating tank 12, and the heating element 19 is activated to start the hot water boiling process. When the hot water in the heating tank 12 reaches 90 to 100 ℃, the temperature sensor 20 senses it and the heating element 19 is turned off.

Then, in the cooking process, the solenoid valve a15 is "opened" to supply about 20mL of hot water from the hot water supply port 29 to the coffee powder 11 in the bowl 9. The solenoid valve a15 is then "closed" and the coffee powder 11 is steamed after about 30 seconds of water absorption.

Then the drip process is entered and solenoid valve a15 is again "opened" to supply hot water to filter cup 9 and extract coffee from drip port 36 into coffee cup 7. At this time, the trickling filtration rate was 30%, and therefore the trickling filtration amount was 130mL × 0.3. A trickling amount of 39mL of hot water was supplied in 2 "20 mL +19 mL" portions. The supply of hot water was stopped for about 10 seconds between each supply of hot water.

The hot water of the selected amount can be supplied at once, but if the amount of the hot water supplied at once is large, the hot water overflows from the filter bowl. Since the filtration rate of the machine body 1 is set to 30 to 100%, the maximum filtration amount is 130mL, and if hot water is supplied at one time, the hot water overflows from the filter bowl 9. Therefore, the maximum hot water supply amount per one time of the machine body 1 is set to be equal to or less than the hot water supply amount of the minimum trickling filter rate of the machine body.

Then, the hot water adding process is started, the electromagnetic valve B16 is opened, only hot water is poured into the coffee cup 7 from the hot water adding port 30 directly, and 1 cup of coffee can be brewed. At this time, the amount of hot water added was "91 mL — 130mL to 39 mL". The solenoid valve B16 remains "open" until the hot water in the heating tank 12 is depleted, and the solenoid valve B16 is closed when the hot water in the heating tank 12 is depleted, thereby ending the coffee brewing process.

In this way, the electric coffee maker performs a coffee making process by controlling the operation timing and operation time of the electric pump 13, the solenoid valve a15, and the solenoid valve B16 by the program of the control circuit 33.

Fig. 4 shows the hot water supply port 29 provided on the bottom surface of the drip drain 35. Fig. 5 shows the surface of the coffee powder 11 and the hot water supply port 29 in an overlapped manner. The hot water supply port 29 is provided with a small hole in a wide range so as to be able to supply hot water to a wide range of the coffee powder 11. Since the area for supplying hot water is large, when the amount of hot water supply is small, the hot water cannot be supplied to all the hot water supply ports 29, and thus the hot water cannot be uniformly supplied to the coffee powder. In order to avoid such a problem, the minimum hot water supply amount per one time needs to be 10mL or more.

The filtration rate of the machine body 1 is set to be 30-100%, so the filtration amount is 39-130 mL. Therefore, the amount of hot water supplied to the electric coffee machine is measured by supplying hot water in an amount between the "1-time maximum amount of hot water" and the "1-time minimum amount of hot water" a plurality of times.

The foregoing embodiments and description have been provided to illustrate the principles and preferred embodiments of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed.

Claims

1. A coffee machine characterized by: a structure comprising a machine body (1), a flow path which is arranged in the machine body (1) and is used for a dripping filtration process of supplying hot water to a filter cup (9) and a flow path which is arranged in the machine body (1) and is used for an adding hot water process of directly supplying hot water to a coffee cup (7), wherein a corresponding electromagnetic valve A (15) and an electromagnetic valve B (16) are arranged in each flow path, and the dripping filtration process and the adding hot water process are executed by controlling the opening and closing time of the electromagnetic valve A (15) and the electromagnetic valve B (16) so as to brew one cup of coffee;

in this configuration, the trickling filtration rate is set to be within the range of 30 to 70%, and the "maximum amount of primary heat supply water" of the machine body (1) is set to the amount of heat supply water of the minimum trickling filtration rate of the machine body (1).

2. A coffee machine according to claim 1, characterized in that: the coffee machine further comprises a water tank (6), a heating tank (12), a cup holder (37) and a filter cup holder (8) which are arranged in the machine body (1), the water tank (6) and the heating tank (12) are mutually connected through an electric pump (13) by a water supply pipe (14), the heating tank (12) is communicated with a dripping funnel (35) through a hot water supply pipe (27), an electromagnetic valve A (15) is arranged on the hot water supply pipe (27) between the heating tank (12) and the dripping funnel (35), a filter cup (9) is arranged on the filter cup holder (8) at the lower end of the dripping funnel (35), a filter paper (10) is arranged in the filter cup (9), and a coffee cup (7) is placed on the cup holder (37) at the lower end of the filter cup (9);

the coffee cup is characterized in that the lower end of the heating tank (12) is also connected with an adding hot water pipe (28), the other end of the adding hot water pipe (28) extends to the upper end of the coffee cup (7), and the adding hot water pipe (28) is also provided with an electromagnetic valve B (16).

3. A coffee machine according to claim 2, characterized in that: the lower end of the dripping drain (35) is provided with a plurality of hot water supply ports (29).

4. A coffee machine according to claim 2, characterized in that: the machine body (1) is also internally provided with a control panel (33), and the control panel (33) is connected with the electric pump (13), the electromagnetic valve A (15) and the electromagnetic valve B (16).

5. A coffee machine according to claim 2, characterized in that: the heating tank (12) is composed of a heating tank container (17), a container cover (18) and a heating body (19), and is provided with a temperature sensor (20), a temperature controller (21) and a temperature fuse (22).

6. A coffee machine according to claim 5, characterized in that: the container cover (18) is provided with a water supply hole (23) and an exhaust hole (24), and the bottom of the heating tank container (17) is provided with a hot water supply hole (25) and a hot water adding hole (26).

7. A coffee machine according to claim 2, characterized in that: the coffee maker is characterized in that the machine body (1) is also provided with an operation panel (2), the operation panel (2) is provided with a power switch (3), a selection switch (4) and an opening switch (5), and the selection switch (4) can select the drip filtration rate of the coffee amount within the range of 30-70%.

8. A coffee machine according to claim 2, characterized in that: a one-way valve (34) is arranged on a water supply pipe (14) between the heating tank (12) and the electric pump (13).

9. A coffee machine according to claim 6, characterized in that: the exhaust hole (24) is communicated with the exhaust port (31) through an exhaust pipe (32).