CN109645828B

CN109645828B - Coffee machine with improved temperature control and temperature control method thereof

Info

Publication number: CN109645828B
Application number: CN201710940483.7A
Authority: CN
Inventors: 梁志华; 冯志聪; 陆锡泉; 王家宝
Original assignee: Simatelex Manufactory Co Ltd
Current assignee: Simatelex Manufactory Co Ltd
Priority date: 2017-10-11
Filing date: 2017-10-11
Publication date: 2021-03-30
Anticipated expiration: 2037-10-11
Also published as: CN109645828A

Abstract

The invention relates to a coffee machine with improved temperature control and a temperature control method thereof, the coffee machine comprises at least one driver for driving the coffee machine in the brewing process and a heater for heating, the heater is connected in series with a heating control kick type temperature controller for controlling the working state of the heater, and each driver is respectively connected in series with a driving control kick type temperature controller for controlling the working state of the driver in a one-to-one correspondence manner. The coffee machine with the improved temperature control and the temperature control method thereof can ensure that the temperature control is simpler and easier, the used parts are fewer, the cost is reduced, and the taste of the brewed coffee is better.

Description

Coffee machine with improved temperature control and temperature control method thereof

Technical Field

The invention relates to the technical field of coffee brewing, in particular to a coffee machine with improved temperature control and a temperature control method thereof.

Background

The taste of a cup of coffee, in addition to being determined by the quality of the coffee beans selected, the impact of the brewing process on taste is important. At present, the coffee machine is controlled by a circuit board to brew coffee, the parts are complex, and the taste of the brewed coffee is poor.

Disclosure of Invention

The invention aims to provide a coffee machine with improved temperature control and a temperature control method thereof, which solve the problem of complex parts caused by circuit board control in the prior art.

The technical scheme adopted by the invention for solving the technical problem is as follows: a coffee machine with improved temperature control comprises at least one driver and a heater, wherein the driver is used for driving the coffee machine in the brewing process, the heater is used for heating, heating control snap-action temperature controllers used for controlling the working state of the heater are connected in series on the heater, and the driving control snap-action temperature controllers which are in one-to-one correspondence and used for controlling the working state of the driver are respectively connected in series on each driver.

In the coffee machine of the invention, the coffee machine further comprises a brewing basket assembly, the brewing basket assembly comprises a brewing basket for containing coffee powder and a rotary cover which is arranged on the brewing basket and can rotate relative to the brewing basket, at least one water outlet hole which rotates along with the rotary cover is formed in the rotary cover, the driver comprises a first driver for providing driving force for the relative rotation of the rotary cover, and the drive control snap-action temperature controller comprises a first drive control snap-action temperature controller which is mutually connected in series with the first driver.

In the coffee machine of the present invention, the coffee machine further comprises a bean grinding assembly, the bean grinding assembly comprises a bean grinding cutter, the driver further comprises a second driver for providing driving force for the bean grinding cutter, and the drive control kick type temperature controller further comprises a second drive control kick type temperature controller connected in series with the second driver.

In the coffee machine of the present invention, the kick temperature of the heating control kick type thermostat is T1, the kick temperature of the first drive control kick type thermostat is T2, the kick temperature of the second drive control kick type thermostat is T3, and T1 > T2 > T3.

In the coffee maker of the present invention, the bean grinding assembly further includes a bean grinding cup for grinding coffee beans and a powder filtering member for filtering coffee powder detachably mounted on the bean grinding cup; the powder filtering piece is provided with a plurality of filter discs with filtering holes with different apertures, a powder outlet channel is formed in the bean grinding cup, and at least one filter disc of the powder filtering piece is correspondingly arranged on the channel section of the powder outlet channel; the bean grinding cup is provided with a slot which is on the same plane with the channel section of the powder outlet channel, and the powder filtering piece is detachably inserted in the slot in the positive and negative directions.

In the coffee maker of the present invention, the number of the water outlet holes is plural and is arranged in a radial direction of the rotary cover.

In the coffee machine of the present invention, the rotary cover is provided with a water guide structure for guiding the brewing water to the water outlet hole, the water guide structure is an inclined surface or a curved surface inclined toward the water outlet hole, and the water outlet hole is formed in the lower portion of the water guide structure.

In the coffee machine of the invention, at least one water leakage hole for preventing the brewing water from overflowing is arranged at the position of the water guide structure higher than the water outlet hole.

In the coffee machine, the rotary cover is connected with the brewing basket through a connecting ring, the connecting ring is relatively and fixedly connected with the brewing basket, and the connecting ring is relatively and rotatably connected with the rotary cover.

The invention also provides a temperature control method of the coffee machine, which comprises the following steps:

A. after the main power supply is started, the temperature of the heater is lower than the kick temperature of the heating control kick temperature controller and the drive control kick temperature controller, switches of the heating control kick temperature controller and the drive control kick temperature controller are kept in a closed state, and the heater and the driver work normally;

B. in the process of brewing coffee, as the temperature of the heater rises, when the driver senses that the temperature transmitted by the heater is higher than the kick temperature of the drive control kick temperature controller, the switch of the drive control kick temperature controller is switched off, and the driver stops working;

C. when the temperature of the heater continues to rise and is higher than the kick temperature of the heating control kick temperature controller, the switch of the heating control kick temperature controller is switched off, the heater stops working, coffee brewing is completed, and the heating control kick temperature controller enters a heat preservation state.

The coffee machine with the improved temperature control and the temperature control method thereof have the following beneficial effects: the coffee machine with the improved temperature control and the temperature control method thereof can ensure that the temperature control is simpler and easier, the used parts are fewer, the cost is reduced, and the taste of the brewed coffee is better.

Drawings

FIG. 1 is a schematic view of a temperature controlled modified coffee maker of the present invention from a first angle;

FIG. 2 is a schematic view of the temperature controlled modified coffee maker of the present invention from a second angle;

FIG. 3 is a schematic structural view of a part of the internal structure of the temperature-controlled improved coffee maker of the present invention;

FIG. 4 is an exploded view of the brew basket assembly of the temperature controlled modified coffee maker of the present invention;

FIG. 5 is an exploded view of a portion of the brew basket assembly of the temperature controlled modified coffee maker of the present invention;

FIG. 6 is a perspective view of a brew basket assembly of the temperature controlled modified coffee maker of the present invention;

FIG. 7 is a schematic cross-sectional view of a brew basket assembly of the temperature controlled modified coffee maker of the present invention;

FIG. 8 is a schematic view of the brewing path of the outlet of the temperature controlled modified coffee maker of the present invention;

FIG. 9 is a schematic view of the temperature controlled modified coffee maker of the present invention from a third angle;

FIG. 10 is a perspective view of a bean grinding assembly of the temperature controlled modified coffee maker of the present invention;

FIG. 11 is a schematic cross-sectional view of a bean grinding assembly of the temperature controlled modified coffee maker of the present invention;

FIG. 12 is a schematic view of the powder filter of the bean grinding assembly of the temperature controlled modified coffee maker of the present invention being inserted into the bean grinding cup;

FIG. 13 is a schematic view of the powder filter of the bean grinding assembly of the temperature controlled improved coffee maker of the present invention inserted into the bean grinding cup.

FIG. 14 is a schematic view of the temperature control inside the temperature controlled coffee maker according to the present invention;

FIG. 15 is a temperature profile of the heater of the temperature controlled modified coffee maker of the present invention;

FIG. 16 is a circuit configuration diagram corresponding to a first stage of the temperature profile of FIG. 15;

FIG. 17 is a circuit configuration diagram corresponding to the second stage of the temperature profile of FIG. 15;

FIG. 18 is a circuit configuration diagram corresponding to a third stage of the temperature profile of FIG. 15;

FIG. 19 is a circuit configuration diagram corresponding to the fourth stage of the temperature profile of FIG. 15;

fig. 20 is a circuit configuration diagram corresponding to the fifth stage of the temperature profile in fig. 15.

Detailed Description

The temperature-controlled improved coffee machine and the temperature control method thereof of the present invention will be further explained with reference to the accompanying drawings and examples:

in the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like refer to orientations and positional relationships illustrated in the drawings, which are used for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be considered limiting.

As shown in fig. 1 to 7, the temperature controlled improved coffee maker includes a machine body 1 and a brew basket assembly 2, the brew basket assembly 2 being mounted on the machine body 1.

The brewing basket assembly 2 comprises a brewing basket 5 for containing coffee powder and a rotary cover 7 which is arranged on the brewing basket 5 and can rotate relative to the brewing basket 5, and at least one water outlet hole 10 which rotates along with the rotary cover 7 is formed in the rotary cover 7. That is to say, at least one water outlet hole 10 is arranged on the radial line of the rotary cover 7, so that when the rotary cover 7 rotates, the water outlet hole 10 also rotates, water can be injected to the coffee powder in a rotating way, and the effect of uniform brewing is achieved.

As shown in fig. 2-3, a driving assembly 4 for driving the rotary cover 7 to rotate is further mounted on the machine body 1. In the present embodiment, the driving assembly 4 includes at least one gear member 41 and a first driver 42 for providing a driving force to the gear member 41, that is, the first driver 42 for providing a driving force to the rotation cover 7 for rotating movement, and the gear portion 12 engaged with the gear member 41 is formed on the outer circumference of the rotation cover 7. The first driver 42 may be a motor or an electric motor, the number of the gear members 41 is three, the first gear member 41a, the second gear member 41b and the third gear member 41c are respectively provided, the first gear member 41a is connected with the first driver 42 and directly driven by the first driver 42, the third gear member 41c is meshed with the gear portion 12, and the second gear member 41b is respectively meshed with the first gear member 41a and the second gear member 41b to perform a linkage connection function. In other embodiments, the number of the gear member 41 may be only one, and it is directly connected to the first driver 42 and meshed with the gear portion 12. Under the action of the driving assembly 4, the rotary cover 7 rotates along with the rotation of the gear member 41, so that the rotation is realized.

In another embodiment, the driving assembly 4 comprises a belt, at least one driving wheel and a first driver 42 providing a driving force, by means of which the rotary cap 7 is rotated.

As shown in fig. 9 to 13, a bean grinding assembly 3 is further installed at an upper portion of the body 1, and the bean grinding assembly 3 includes a bean grinding cup 15 for grinding coffee beans and a powder filtering member 16 for filtering coffee powder detachably installed at the bean grinding cup 15. The bean grinding assembly 3 further comprises a bean grinding knife 101 and a second driver 108 for providing a driving force for the bean grinding knife, the bean grinding knife 101 being mounted in the bean grinding cup 15.

As shown in FIG. 14, the temperature-controlled improved coffee maker further comprises a heater 102 for heating and at least one actuator for actuating the coffee maker during brewing, and the number of the actuators is two in this embodiment, including the above-mentioned first actuator 42 for providing the actuating force for rotating the lid 7 and the second actuator 108 for providing the actuating force for the bean-grinding blade 101.

As shown in fig. 14-20, a heating control kick type thermostat 103 for controlling the working state of the heater 102 is connected in series to the heater 102, and a drive control kick type thermostat for controlling the working state of the driver is connected in series to each driver. In this embodiment, the driving-control snap-action thermostat comprises a first driving-control snap-action thermostat 104 connected in series with the first driver 42, and a second driving-control snap-action thermostat 105 connected in series with the second driver 108. The heater 102 is also connected in series with a fuse 106.

The kick temperature of the heating control kick temperature controller 103 is set to be T1, the kick temperature of the first driving control kick temperature controller 104 is set to be T2, the kick temperature of the second driving control kick temperature controller 105 is set to be T3, T1 is greater than T2, and T2 is greater than T3.

In other embodiments, T1-T2-T3 may also be provided. The temperature difference of different positions of the heater is utilized. So that the first drive control snap-action temperature controller (104) and the second drive control snap-action temperature controller (105) are not closed again during heat preservation, the first driver (42) and the second driver (108) are started, and the snap-action temperature is set by using the temperature difference of different positions of the heater 102, so that the switch of the first drive control snap-action temperature controller 104 and the second drive control snap-action temperature controller 105 are not closed again during heat preservation, and the first driver 42 and the second driver 108 are not started.

As shown in fig. 4-7, the rotary cover 7 is connected with the brewing basket 5 through the connecting ring 8, and the connecting ring 8 is fixedly connected with the brewing basket 5, wherein the relative fixed connection means that the rotary cover 7 and the connecting ring 8 cannot rotate relatively. As shown in fig. 4, in an embodiment, an outer engaging portion 51 is disposed at one end of the brewing basket 5 connected to the connecting ring 8, the connecting ring 8 has an inner engaging portion 81 matched with the outer engaging portion 51, and the inner engaging portion 81 is engaged with the outer engaging portion 51 to connect the connecting ring 8 and the brewing basket 5. And a first saw tooth ring 52 protruding towards the connecting ring 8 is formed in the outer housing part 51, and a second saw tooth ring 82 protruding towards the brewing basket 5 and matched with the first saw tooth ring 52 is formed on the inner housing part 81. Through the cooperation of the first saw tooth ring 52 and the second saw tooth ring 82, the relative fixed connection between the connection ring 8 and the brewing basket 5 can be realized, that is, the relative rotation between the connection ring 8 and the brewing basket 5 can not occur.

In another embodiment, the connecting ring 8 is provided with a plurality of engaging protrusions (not shown), the brewing basket 5 is provided with engaging recesses (not shown) matching with each engaging protrusion, and the connecting ring 8 and the brewing basket 5 are engaged with each other by the engaging protrusions and the engaging recesses to achieve a relatively fixed connection, i.e. the connecting ring 8 does not rotate relative to the brewing basket 5. In another embodiment, the connection ring 8 and the brewing basket 5 can be fixedly connected with each other through screws, rivets and other fasteners, so that the connection ring 8 and the brewing basket 5 are relatively fixed.

As shown in fig. 4, in the present embodiment, a concave ring 83 is formed at one end of the connection ring 8 facing the rotation cover 7, and a plurality of protrusions 71 capable of extending into the concave ring 83 are formed at one end of the rotation cover 7 facing the connection ring 8 in a protruding manner, wherein the protrusions 71 extend into the concave ring 83 and move in the concave ring 83, thereby realizing that the rotation cover 7 can rotate relative to the connection ring 8. Wherein the connection ring 8 and the rotary cover 7 are combined into the top cover assembly 6.

With the above design, when the driving assembly 4 drives the rotary cover 7 to rotate, the brewing basket 5 and the connecting ring 8 do not rotate because the connecting ring 8 is fixed relative to the brewing basket 5, and only the rotary cover 7 rotates relative to the brewing basket 5 and the connecting ring 8.

In another embodiment, the rotary cap 7 may also be directly connected to the brew basket 5 without the connection ring 8. Wherein, a concave ring (not marked in the figure) is formed at one end of the brewing basket 5 facing the rotary cover 7, and a plurality of protrusions 71 capable of extending into the concave ring are formed at one end of the rotary cover 7 facing the connecting ring 8 in a protruding manner, wherein the protrusions 71 extend into the concave ring and move in the concave ring, thereby realizing that the rotary cover 7 can rotate relative to the brewing basket 5.

As shown in fig. 4 to 7, in the present embodiment, the number of the water outlet holes 10 is plural and is arranged along the radial direction of the rotary cover 7. It should be noted that the water outlet holes 10 may be arranged along a single radial direction of the rotary cover 7, or may be arranged along multiple radial directions of the rotary cover 7. Preferably, the water outlet holes 10 are arranged in a single radial direction of the rotary cap 7.

In another embodiment, the number of the water outlet holes 10 may be only one, and the one water outlet hole 10 is arranged on a radial line of the rotating cover 7, that is, the one water outlet hole 10 is not arranged at a central position of the rotating cover 7.

Wherein, a water guide structure 9 for guiding the brewing water to the water outlet hole 10 is arranged on the rotary cover 7. The water guide structure 9 is an inclined plane or a curved surface inclined toward the water outlet hole 10, and the water outlet hole 10 is formed in the lower portion of the water guide structure 9. At least one water leakage hole 14 for preventing the brewing water from overflowing is arranged at the position, higher than the water outlet hole 10, of the water guide structure 9. The number of the water leakage holes 14 may be one or more. The water leakage holes 14 prevent water from flowing out of the brew basket assembly 2.

When the coffee maker is used, coffee powder is placed in filter paper or a filter cup, the filter paper or the filter cup is placed in the brewing basket 5, then the rotary cover 7 and the connecting ring 8 form the top cover assembly 6, and then the top cover assembly is installed on the brewing basket 5, so that the driving part 12 on the rotary cover 7 is meshed with the gear part 41. When the first driver 42 is operated, the rotary cover 7 is driven to rotate continuously. When the water flows from the water pipe on the machine body 1 to the brewing basket component 2 for brewing, the water flows to the water guide structure 9 on the rotary cover 7 firstly, and the water is guided to the water outlet hole 10 through the water guide structure 9 and falls to the coffee powder for brewing.

As shown in fig. 8, since the water outlet holes 10 are radially arranged along the rotating cover 7, the water outlet holes 10 are arranged in a row from inside to outside along with the rotation of the rotating cover 7, so that the water outlet holes form a circle of brewing paths 11 from inside to outside and flow into the coffee powder.

In this embodiment, through the design of the rotation of the rotary cover 7, the water guide structure 9 and the water outlet hole 10, a row of circular brewing paths 11 is formed when water is injected to the coffee powder, so that uniform brewing is achieved, the situation that the coffee powder is not soaked is avoided, and the coffee powder is sufficiently extracted.

As shown in fig. 9-13, the powder filter 16 is provided with a plurality of filter sheets 17 having filter holes 18 with different pore sizes. The grinding cup 15 is provided with a powder outlet channel 20, and at least one filter disc 17 of the powder filtering piece 16 is correspondingly arranged on the channel section of the powder outlet channel 20. The bean grinding cup 15 is provided with a slot 19 which is in the same plane with the channel section of the powder outlet channel 20, and the powder filtering piece 16 is detachably inserted in the slot 19 in the positive and negative directions.

In the present embodiment, as shown in fig. 12 and 13, the number of the filter sheets 17 is two, and a first filter sheet and a second filter sheet are provided, respectively, at the upper portion and the lower portion of the powder filter 16. The first filter disc is provided with a first filter hole, the second filter disc is provided with a second filter hole, and the aperture of the first filter hole is different from that of the second filter hole. The aperture of the first filtering hole is larger than that of the second filtering hole, and the aperture of the second filtering hole can also be larger than that of the first filtering hole. When the powder filtering piece 16 is inserted into the slot 19, the first filter disc can be positioned in the powder outlet channel 20; when the powder filtering piece 16 is inserted into the slot 19 reversely, the second filter disc can be positioned in the powder outlet channel 20. Therefore, the function of adjusting the fineness of the ground powder can be achieved as required, and the powder filtering piece 16 can be conveniently cleaned.

In another embodiment, when the number of the filter sheets 17 exceeds two, the powder filtering member 16 may be positioned where the positioning is needed, so that each filter sheet 17 may be positioned on the channel section of the powder outlet channel 20. Wherein, a positioning structure (not labeled in the figure) is arranged between the side walls of the two sides of the powder filtering piece 16 and the slot 19.

The positioning structure may be formed with a fastening portion (not shown) on two side walls of the powder filtering element 16, the slot 19 is formed with a plurality of grooves (not shown), the powder filtering element 16 is made of plastic, and the slot 19 may also be made of plastic. This allows the snap fit to snap into and out of the groove by the plasticity of the filter element 16. The number of the grooves is the same as that of the filter sheets 17, and the positions of the grooves are designed to ensure that the corresponding filter sheets 17 are exactly correspondingly positioned on the powder outlet channel 20 when the buckling parts are buckled into the grooves.

In another embodiment, the positioning structure may further include elastic rubber bodies (not shown) disposed on two sides of the slot 19, the elastic rubber bodies may be silica gel or rubber, and the width of the powder filtering member 16 is greater than the distance between the elastic rubber bodies on the two sides of the slot 19 and smaller than the distance between the sidewalls of the two sides of the slot 19. When the powder filtering piece 16 is inserted into the slot 19, friction force is generated between the powder filtering piece and the elastic colloid, and therefore the powder filtering piece 16 can be positioned at any position. The positioning structure may also be formed with friction surfaces on both sides of the powder filter 16 and friction surfaces on both sides of the insertion slot 19, so that the powder filter 16 can be positioned at any position when inserted into the insertion slot 19.

Through the design, the consistency of the thickness of the ground coffee can be improved each time when the ground coffee is ground, the ground coffee is convenient to clean, the taste of the brewed coffee is easy to control, and the taste of the brewed coffee is more fragrant and mellow.

The invention also provides a temperature control method of the coffee machine with improved temperature control, which comprises the following steps:

A. after the main power supply 107 is turned on, the temperature of the heater 102 is lower than the kick temperature of the heating control kick temperature controller 103 and the drive control kick temperature controller, the switches of the heating control kick temperature controller 103 and the drive control kick temperature controller are kept in a closed state, and the heater 102 and the driver work normally;

B. in the process of brewing coffee, as the temperature of the heater 102 rises, when the driver senses that the temperature transmitted by the heater 102 is higher than the kick temperature of the drive control kick temperature controller, the switch of the drive control kick temperature controller is switched off, and the driver stops working;

C. when the temperature of the heater 102 continues to rise and is higher than the kick temperature of the heating control kick temperature controller 103, the switch of the heating control kick temperature controller 103 is turned off, the heater 102 stops working, coffee brewing is completed, and the coffee brewing enters a heat preservation state.

The kick temperature of the heating control kick temperature controller 103 is preferably designed to be higher than the kick temperature of the drive control kick temperature controller, and the kick temperature of the heating control kick temperature controller 103 may be designed to be equal to the kick temperature of the drive control kick temperature controller.

Specifically, as shown in fig. 15, the kick temperature of the heating-control kick temperature controller 103 is T1, the kick temperature of the first driving-control kick temperature controller 104 is T2, the kick temperature of the second driving-control kick temperature controller 105 is T3, T1 > T2, and T2 > T3.

As shown in fig. 15-20, the temperature control method of the temperature-controlled modified coffee maker comprises the following steps:

s1, as shown in fig. 16, which is a circuit diagram of the first stage in fig. 15, when the main power supply 107 is turned on, the temperature of the heater 102 is lower than the trip temperature T1 of the heating control trip temperature controller 103, the trip temperature T2 of the first driving control trip temperature controller 104, and the trip temperature T3 of the second driving control trip temperature controller 105, at this time, the switches of the heating control trip temperature controller 103, the first driving control trip temperature controller 104, and the second driving control trip temperature controller 105 are in a closed state, and the heater 102, the first driver 42 for controlling the rotation of the rotary cover, and the second driver 108 for controlling the bean grinder are in an operating state;

s2, as shown in fig. 17, which is a circuit diagram of the second stage in fig. 15, during the coffee making process, when the temperature of the second driving control kick temperature controller 105 transmitted from the heater 102 exceeds T3, the switch of the second driving control kick temperature controller 105 is turned off, the second driver 108 for controlling the bean grinding knife 101 stops working, but the heater 102 and the first driver 42 for controlling the rotation of the rotary cover 7 still continue working;

s3, as shown in fig. 18, which is a circuit diagram of the third stage in fig. 15, in the process of making coffee, when the temperature of the first driving control kick type temperature controller 104 transmitted from the heater 102 exceeds T2, the switch of the first driving control kick type temperature controller 104 is turned off, the first driver 42 for controlling the rotation of the rotary cover 7 stops working, but the heater 102 still continues working;

s4, as shown in fig. 19, which is a circuit diagram of the fourth stage in fig. 15, when the temperature of the heater 102 continues to rise and rises to a temperature T1 higher than the kick temperature of the heating control kick temperature controller 103, the switch of the heating control kick temperature controller 103 is turned off, the heater 102 stops working, and the coffee completes making;

s5, entering a heat preservation state, when the temperature of the heater 102 is lower than T1, the switch of the heating control snap-action temperature controller 103 is closed again, the heater 102 works again, but the temperature of the heater 102 is still higher than T2 and T3, the first driver 42 for controlling the rotation of the rotary cover 7 and the second driver 108 for controlling the bean grinding knife 101 are still in a work stop state;

s6, as shown in fig. 20, which is a circuit diagram of the fifth stage in fig. 15, during the heat preservation process, when the temperature of the heater 102 rises to be greater than T1 again, the switch of the heating control kick type temperature controller 103 is turned off again, and the heater 102 stops working again;

s7, if the main power supply 107 is always in the connection state, repeating the steps S5 and S6, and keeping the temperature.

Note that the broken lines in fig. 16 to 20 indicate circuit disconnection, and the solid lines indicate circuit connection.

In other embodiments, the temperatures of T1, T2, and T3 may be designed to be the same, that is, T1-T2-T3, and the temperature difference between different positions of the heater may be used. So that the first drive control snap-action temperature controller (104) and the second drive control snap-action temperature controller (105) are not closed again during heat preservation, the first driver (42) and the second driver (108) are started, and the snap-action temperature is set by using the temperature difference of different positions of the heater 102, so that the switch of the first drive control snap-action temperature controller 104 and the second drive control snap-action temperature controller 105 are not closed again during heat preservation, and the first driver 42 and the second driver 108 are not started.

The coffee machine with the improved temperature control and the temperature control method thereof can ensure that the temperature control is simpler and easier, the used parts are fewer, the cost is reduced, and the taste of the brewed coffee is better.

It will be appreciated that modifications and variations are possible to those skilled in the art in light of the above teachings and are within the purview of the appended claims.

Claims

1. A coffee machine with improved temperature control comprises at least one driver for driving the coffee machine during brewing and a heater (102) for heating, and is characterized in that the heater (102) is connected in series with a heating control snap-action temperature controller (103) for controlling the working state of the heater (102), each driver is respectively connected in series with a driving control snap-action temperature controller for controlling the working state of the driver in a one-to-one correspondence manner, wherein,

after the main power supply (107) is started, the temperature of the heater (102) is lower than the kick temperature of the heating control kick temperature controller (103) and the drive control kick temperature controller, the switches of the heating control kick temperature controller (103) and the drive control kick temperature controller are kept in a closed state, and the heater (102) and the driver work normally; in the process of brewing coffee, as the temperature of the heater (102) rises, when the driver senses that the temperature transmitted by the heater (102) is higher than the kick temperature of the drive control kick temperature controller, the switch of the drive control kick temperature controller is switched off, and the driver stops working; when the temperature of the heater (102) continues to rise and is higher than the kick temperature of the heating control kick temperature controller (103), the switch of the heating control kick temperature controller (103) is switched off, the heater (102) stops working, coffee brewing is completed, and the coffee brewing enters a heat preservation state.

2. The coffee machine according to claim 1, characterized in that the coffee machine further comprises a brewing basket assembly (2), the brewing basket assembly (2) comprises a brewing basket (5) for containing coffee powder and a rotary cover (7) mounted on the brewing basket (5) and capable of rotating relative to the brewing basket (5), at least one water outlet hole (10) rotating along with the rotary cover (7) is formed in the rotary cover (7), the driver comprises a first driver (42) for providing driving force for the relative rotation of the rotary cover (7), and the drive control snap thermostat comprises a first drive control snap thermostat (104) connected with the first driver (42) in series.

3. A coffee machine according to claim 2, characterized in that the coffee machine further comprises a bean grinding assembly (3), the bean grinding assembly (3) comprising a bean grinding knife (101), the driver further comprising a second driver (108) for providing a driving force for the bean grinding knife, the drive-controlled snap-action thermostat further comprising a second drive-controlled snap-action thermostat (105) in series with the second driver (108).

4. A coffee machine according to claim 3, characterized in that the kick temperature of the heating-control kick thermostat (103) is set to T1, the kick temperature of the first drive-control kick thermostat (104) is set to T2, the kick temperature of the second drive-control kick thermostat (105) is set to T3, and T1 > T2 > T3.

5. A coffee machine according to claim 3, characterized in that the bean grinding assembly (3) further comprises a bean grinding cup (15) for grinding coffee beans and a powder filtering member (16) for filtering coffee powder detachably mounted on the bean grinding cup (15); the powder filtering piece (16) is provided with a plurality of filter discs (17) with filtering holes (18) with different apertures, a powder outlet channel (20) is formed in the bean grinding cup (15), and at least one filter disc (17) of the powder filtering piece (16) is correspondingly arranged on the channel section of the powder outlet channel (20); the bean grinding cup (15) is provided with a slot (19) which is in the same plane with the channel section of the powder outlet channel (20), and the powder filtering piece (16) is detachably inserted in the slot (19) in the positive and negative directions.

6. A coffee machine according to claim 2, characterized in that said outlet holes (10) are in a plurality and are arranged radially to said rotary cover (7).

7. The coffee machine according to claim 2, characterized in that the rotary cover (7) is provided with a water guiding structure (9) for guiding the brewing water to the water outlet hole (10), the water guiding structure (9) is an inclined surface or a curved surface inclined towards the water outlet hole (10), and the water outlet hole (10) is arranged at the lower part of the water guiding structure (9).

8. Coffee machine according to claim 7, characterised in that at least one water leakage hole (14) is provided in the position of the water guiding structure (9) above the water outlet hole (10) for preventing the brewing water from overflowing.

9. Coffee machine according to claim 2, characterised in that the connection between the rotary lid (7) and the brew basket (5) is provided by means of a connection ring (8), the connection ring (8) being in a relatively fixed connection with the brew basket (5), the connection ring (8) being in a relatively rotary connection with the rotary lid (7).