Coffee machine and working method therefor

Abstract

A coffee machine with a leak preventing device includes a main body, a first lid body, a brewing chamber, a water tank and a heating device, the brewing chamber. The water tank and the heating device are provided in the main body. The main body is provided with a main body opening, and the first lid body is used for covering the main body opening. The coffee machine further comprises a flow guiding device. The flow guiding device comprises a first flow guiding channel, a first end of the first flow guiding channel being connected to the heating device, the brewing chamber being provided with a brewing chamber through hole corresponding to a second end of the first flow guiding channel, the second end of the first flow guiding channel being inserted into the brewing chamber through the brewing chamber through hole. A working method is also provided.

1 . A coffee machine, comprising a main body ( 1 ), a first lid body ( 6 ), a brewing chamber ( 412 ), a water tank ( 2 ) and a heating device ( 3 ), the brewing chamber ( 412 ), the water tank ( 2 ) and the heating device ( 3 ) being provided in the main body ( 1 ), the main body ( 1 ) being provided with a main body opening, wherein the first lid body ( 6 ) is used for covering the main body opening,
 the coffee machine further comprises a flow guiding device, wherein the flow guiding device comprises a first flow guiding channel ( 51 ), a first end ( 511 ) of the first flow guiding channel ( 51 ) being connected to the heating device ( 3 ), the brewing chamber ( 412 ) being provided with a brewing chamber through hole corresponding to a second end ( 512 ) of the first flow guiding channel ( 51 ), the second end ( 512 ) of the first flow guiding channel ( 51 ) being inserted into the brewing chamber ( 412 ) through the brewing chamber through hole;   or wherein the flow guiding device comprises the first flow guiding channel ( 51 ) and a second flow guiding channel ( 52 ) detachably connected to the first flow guiding channel ( 51 ), the first end ( 511 ) of the first flow guiding channel ( 51 ) being connected to the heating device ( 3 ), the first lid body ( 6 ) being provided with the second flow guiding channel ( 52 ) which has a water inlet ( 524 ) and a water outlet ( 525 ), the water outlet ( 525 ) being located at a position corresponding to a brewing chamber opening ( 416 ) such that liquid is supplied to the brewing chamber ( 412 ).   
     
     
         2 . The coffee machine according to  claim 1 , wherein the second flow guiding channel ( 52 ) is an individual member provided on the first lid body ( 6 ). 
     
     
         3 . The coffee machine according to  claim 1 , wherein the second flow guiding channel ( 52 ) is partially or totally formed by the first lid body ( 6 ). 
     
     
         4 . The coffee machine according to  claim 1 , wherein a cavity ( 523 ), which is provided with the water inlet ( 524 ) and the water outlet ( 525 ), is provided inside the first lid body ( 6 ), the water inlet ( 524 ) being fluidly communicated to the water outlet ( 525 ) so as to form the second flow guiding channel ( 52 ), the second end ( 512 ) of the first flow guiding channel ( 51 ) being detachably connected to the water inlet ( 524 ), the water outlet ( 525 ) being located at a position corresponding to the brewing chamber opening ( 416 ) such that liquid is supplied to the brewing chamber ( 412 ). 
     
     
         5 . The coffee machine according to  claim 1 , wherein a cavity ( 523 ), which is provided with the water outlet ( 525 ), is provided inside the first lid body ( 6 ), the second flow guiding channel ( 52 ) comprises a first pipe portion ( 521 ) which is connected to the cavity ( 523 ) and provided with the water inlet ( 524 ), the water inlet ( 524 ) being fluidly communicated to the water outlet ( 525 ) so as to form the second flow guiding channel ( 52 ), the second end ( 512 ) of the first flow guiding channel ( 51 ) being detachably connected to the water inlet ( 524 ) of the first pipe portion ( 521 ), the water outlet ( 525 ) of the cavity ( 523 ) being located at a position corresponding to the brewing chamber opening ( 416 ) such that liquid is supplied to the brewing chamber ( 412 ). 
     
     
         6 . The coffee machine according to  claim 1 , wherein a cavity ( 523 ) is provided inside the first lid body ( 6 ), the second flow guiding channel ( 52 ) comprises a first pipe portion ( 521 ) provided with the water inlet ( 524 ) and a second pipe portion ( 522 ) provided with the water outlet ( 525 ), the water inlet ( 524 ) and the water outlet ( 525 ) being fluidly communicated to the cavity ( 523 ) respectively so as to form the second flow guiding channel ( 52 ), the second end ( 512 ) of the first flow guiding channel ( 51 ) being detachably connected to the water inlet ( 524 ) of the first pipe portion ( 521 ), the water outlet ( 525 ) of the second pipe portion ( 522 ) being located at a position corresponding to the brewing chamber opening ( 416 ) such that liquid is supplied to the brewing chamber ( 412 ). 
     
     
         7 . The coffee machine according  claim 4 , wherein the first lid body ( 6 ) is detachably engaged with the main body ( 1 ), and the first lid body ( 6 ) comprises a first upper lid body ( 61 ) and a first lower lid body ( 62 ), the first upper lid body ( 61 ) being engaged with the first lower lid body ( 62 ) so as to form the cavity ( 523 ). 
     
     
         8 . The coffee machine according  claim 4 , wherein a cavity channel ( 526 ) is provided inside the cavity ( 523 ), the water inlet ( 524 ) and the water outlet ( 525 ) being fluidly communicated to the cavity channel ( 526 ) respectively so as to form the second flow guiding channel ( 52 ). 
     
     
         9 . The coffee machine according to  claim 1 , wherein the water inlet ( 524 ) is detachably connected to the second end ( 512 ) of the first flow guiding channel ( 51 ) inside the main body ( 1 ), and the coffee machine further comprises a blocking device provided at a position corresponding to the second end ( 512 ) of the first flow guiding channel ( 51 ), such that the blocking device is capable of being deformed to prevent liquid from being ejected out of the main body opening when the second flow guiding channel ( 52 ) is detached from the first flow guiding channel ( 51 ). 
     
     
         10 . The coffee machine according to  claim 9 , wherein the blocking device is an elastic assembly, a first end of the elastic assembly being elastically provided at a position corresponding to the second end ( 512 ) of the first flow guiding channel ( 51 ), a second end of the elastic assembly being capable of being rotated around the first end of the elastic assembly such that the elastic assembly is deformed. 
     
     
         11 . The coffee machine according to  claim 9 , wherein the blocking device is an elastic single piece ( 72 ), a middle portion of the elastic single piece ( 72 ) being provided with at least one cutout ( 721 ), the elastic single piece ( 72 ) being capable of being deformed by extrusion such that the cutout ( 721 ) is opened. 
     
     
         12 . The coffee machine according to  claim 9 , wherein a backflow channel ( 21 ) is provided inside the main body ( 1 ), the backflow channel ( 21 ) being communicated to an upper portion of the water tank ( 2 ) and the first flow guiding channel ( 51 ) respectively, such that at least a part of liquid blocked by the blocking device enters into the backflow channel ( 21 ) and flows into the water tank ( 2 ) when the second flow guiding channel ( 52 ) is detached from the first flow guiding channel ( 51 ). 
     
     
         13 . The coffee machine according to  claim 1 , wherein the water inlet ( 524 ) is detachably connected to the second end ( 512 ) of the first flow guiding channel ( 51 ) inside the main body ( 1 ), the second end ( 512 ) of the first flow guiding channel ( 51 ) having a closed top is disposed over the first pipe portion ( 521 ) of the second flow guiding channel ( 52 ), a side wall of the second end ( 512 ) of the first flow guiding channel ( 51 ) being provided with a side wall outlet ( 514 ), a gap being provided between the side wall outlet ( 514 ) and the first pipe portion ( 521 ), such that liquid flows from the side wall outlet ( 514 ) into the second flow guiding channel ( 52 ). 
     
     
         14 . The coffee machine according to  claim 13 , wherein a backflow channel ( 21 ) is provided inside the main body ( 1 ), the backflow channel ( 21 ) being communicated to an upper portion of the water tank ( 2 ) and the first flow guiding channel ( 51 ) respectively, such that at least a part of liquid which flowed from the side wall outlet ( 514 ) enters into the backflow channel ( 21 ) and flows into the water tank ( 2 ) when the second flow guiding channel ( 52 ) is detached from the first flow guiding channel ( 51 ). 
     
     
         15 . The coffee machine according to  claim 1 , wherein a fixing element for fixing the first lid body ( 6 ) onto the main body ( 1 ) is provided on the first lid body ( 6 ) and/or the main body ( 1 ), and a second lid body ( 63 ) for covering the brewing chamber opening ( 416 ) is provided on a lower side of the first lid body ( 6 ), an elastic member ( 633 ) being provided between the first lid body ( 6 ) and the second lid body ( 63 ), such that a relative seal is formed between the second lid body ( 63 ) and the brewing chamber ( 412 ) when the first lid body ( 6 ) is fixed onto the main body ( 1 ). 
     
     
         16 . The coffee machine according to  claim 1 , wherein the coffee machine further comprises a grinding and filtering device which comprises a chamber ( 41 ) for containing liquid and coffee particles, a grinding assembly for grinding coffee particles, a driving mechanism ( 43 ) connected to the grinding assembly and for driving the grinding assembly, and a first filter ( 44 ) for filtering coffee liquid in the chamber ( 41 );
 wherein the chamber ( 41 ) is provided with a chamber opening, and at least a part of the grinding assembly is placed in the chamber ( 41 ), the chamber ( 41 ) comprising the brewing chamber ( 412 ) provided with the brewing chamber opening ( 416 ), and a liquid channel ( 411 ) communicated with the brewing chamber ( 412 ) being located on a bottom of the brewing chamber ( 412 ), the first filter ( 44 ) being partially or totally located on the bottom of the brewing chamber ( 412 ), the liquid channel ( 411 ) being located on a lower side of the first filter ( 44 ) such that coffee liquid in the brewing chamber ( 412 ) flows through the first filter ( 44 ) before entering the liquid channel ( 411 ).   
     
     
         17 . A working method for the coffee machine according to  claim 1 , comprising:
 a. adding liquid into the water tank ( 2 ), and adding coffee powder into the chamber ( 412 );   b. transferring liquid into the heating device ( 3 ) from the water tank ( 2 ), heating liquid by the heating device ( 3 );   c. transferring heated liquid into the brewing chamber ( 412 ) from the heating device ( 3 ) through the flow guiding device, mixing liquid with coffee powders in the brewing chamber ( 412 ) to form coffee liquid.   
     
     
         18 . The working method for the coffee machine according to  claim 17 , wherein the method further comprises a step d between step a and step b:
 covering the main body opening with the first lid body ( 6 ) such that first flow guiding channel ( 51 ) is connected to the second flow guiding channel ( 52 ); and wherein step c comprises: causing heated liquid to flow from the heating device ( 3 ) into the first flow guiding channel ( 51 ) and the second flow guiding channel ( 52 ) successively and to enter into the brewing chamber from the second flow guiding channel ( 52 ).   
     
     
         19 . The working method for the coffee machine according to  claim 18 , wherein the water inlet ( 524 ) is detachably connected to the second end ( 512 ) of the first flow guiding channel ( 51 ) inside the main body ( 1 ), and the coffee machine further comprises a blocking device provided at a position corresponding to the second end ( 512 ) of the first flow guiding channel ( 51 ), such that the blocking device is capable of being deformed to prevent liquid from being ejected out of the main body opening when the second flow guiding channel ( 52 ) is detached from the first flow guiding channel ( 51 );
 and wherein step c further comprises:   blocking liquid from being ejected out of the main body opening by the blocking device when the second flow guiding channel ( 52 ) is detached from the first flow guiding channel ( 51 ) during the supplying process of water from the heating device ( 3 ) into the flow guiding device.   
     
     
         20 . The working method for the coffee machine according to  claim 19 , wherein a backflow channel ( 21 ) is provided inside the main body ( 1 ), the backflow channel ( 21 ) being communicated to an upper portion of the water tank ( 2 ) and the first flow guiding channel ( 51 ) respectively, such that at least a part of liquid blocked by the blocking device enters into the backflow channel ( 21 ) and flows into the water tank ( 2 );
 and wherein step c further comprises:   causing at least a part of liquid blocked by the blocking device to enter into the backflow channel ( 21 ) and to flow into the water tank ( 2 ).   
     
     
         21 . The working method for the coffee machine according to  claim 18 , wherein the water inlet ( 524 ) is detachably connected to the second end ( 512 ) of the first flow guiding channel ( 51 ) inside the main body ( 1 ), the second end ( 512 ) of the first flow guiding channel ( 51 ) having a closed top is disposed over the first pipe portion ( 521 ) of the second flow guiding channel ( 52 ), a side wall of the second end ( 512 ) of the first flow guiding channel ( 51 ) being provided with a side wall outlet ( 514 ), a gap being provided between the side wall outlet ( 514 ) and the first pipe portion ( 521 ), such that liquid flows from the side wall outlet ( 514 ) into the second flow guiding channel ( 52 );
 and wherein step c further comprises:   causing liquid to flow from the side wall outlet ( 514 ) into the main body ( 1 ) when the second flow guiding channel ( 52 ) is detached from the first flow guiding channel ( 51 ) during the supplying process of water from the heating device ( 3 ) into the flow guiding device.   
     
     
         22 . The working method for the coffee machine according to  claim 21 , wherein a backflow channel ( 21 ) is provided inside the main body ( 1 ), the backflow channel ( 21 ) being communicated to an upper portion of the water tank ( 2 ) and the first flow guiding channel ( 51 ) respectively, such that at least a part of liquid which flowed from the side wall outlet ( 514 ) enters into the backflow channel ( 21 ) and flows into the water tank ( 2 );
 and wherein step c further comprises:   causing at least a part of liquid which flowed from the side wall outlet ( 514 ) to enter into the backflow channel ( 21 ) and to flows into the water tank ( 2 ) when the second flow guiding channel ( 52 ) is detached from the first flow guiding channel ( 51 ) during the supplying process of water from the heating device ( 3 ) into the flow guiding device.   
     
     
         23 . A working method for the coffee machine according to  claim 1 , wherein, the coffee machine further comprises a grinding and filtering device which comprises a chamber ( 41 ) for containing liquid and coffee particles, a grinding assembly for grinding coffee particles, a driving mechanism ( 43 ) connected to the grinding assembly and for driving the grinding assembly, a first filter ( 44 ) for filtering coffee liquid in the chamber ( 41 );
 wherein the chamber ( 41 ) is provided with a chamber opening, and at least a part of the grinding assembly is placed in the chamber ( 41 ), the chamber ( 41 ) comprises the brewing chamber ( 412 ) provided with the brewing chamber opening ( 416 ), and a liquid channel ( 411 ) communicated with the brewing chamber ( 412 ) is located on a bottom of the brewing chamber ( 412 ), the first filter ( 44 ) being partially or totally located on the bottom of the brewing chamber ( 412 ), the liquid channel ( 411 ) being located on a lower side of the first filter ( 44 ) such that coffee liquid in the brewing chamber ( 412 ) flows through the first filter ( 44 ) before entering the liquid channel ( 411 );   and wherein the working method comprises the following steps:   a. adding liquid into the water tank ( 2 ), and adding coffee particles into the grinding and filtering device;   b. grinding coffee particles by the grinding and filtering device;   c. transferring liquid into the heating device ( 3 ) from the water tank ( 2 ), heating liquid by the heating device ( 3 );   d. transferring heated liquid into the grinding and filtering device from the heating device ( 3 ) through the flow guiding device, mixing liquid with grinded coffee particles in the grinding and filtering device to form coffee liquid;   e. filtering coffee liquid by the grinding and filtering device;   f. discharging filtered coffee liquid from the grinding and filtering device.   
     
     
         24 . The working method for the coffee machine according to  claim 23 , wherein it further comprises a step g between step a and step b:
 covering the main body opening with the first lid body ( 6 ) such that first flow guiding channel ( 51 ) is connected to the second flow guiding channel ( 52 ); and wherein step d comprises: causing heated liquid to flow from the heating device ( 3 ) into the first flow guiding channel ( 51 ) and the second flow guiding channel ( 52 ) successively and to enter into the brewing chamber from the second flow guiding channel ( 52 ).   
     
     
         25 . The working method for the coffee machine according to  claim 24 , wherein the water inlet ( 524 ) is detachably connected to the second end ( 512 ) of the first flow guiding channel ( 51 ) inside the main body ( 1 ), and the coffee machine further comprises a blocking device provided at a position corresponding to the second end ( 512 ) of the first flow guiding channel ( 51 ), such that the blocking device is capable of being deformed to prevent liquid from being ejected out of the main body opening when the second flow guiding channel ( 52 ) is detached from the first flow guiding channel ( 51 );
 and wherein step d further comprises:   blocking liquid from being ejected out of the main body opening by the blocking device when the second flow guiding channel ( 52 ) is detached from the first flow guiding channel ( 51 ) during the supplying process of water from the heating device ( 3 ) into the flow guiding device.   
     
     
         26 . The working method for the coffee machine according to  claim 25 , wherein a backflow channel ( 21 ) is provided inside the main body ( 1 ), the backflow channel ( 21 ) being communicated to an upper portion of the water tank ( 2 ) and the first flow guiding channel ( 51 ) respectively, such that at least a part of liquid blocked by the blocking device enters into the backflow channel ( 21 ) and flows into the water tank ( 2 ) when the second flow guiding channel ( 52 ) is detached from the first flow guiding channel ( 51 );
 and wherein step d further comprises:   causing at least a part of liquid blocked by the blocking device to enter into the backflow channel ( 21 ) and to flow into the water tank ( 2 ).   
     
     
         27 . The working method for the coffee machine according to  claim 23 , wherein the water inlet ( 524 ) is detachably connected to the second end ( 512 ) of the first flow guiding channel ( 51 ) inside the main body ( 1 ), the second end ( 512 ) of the first flow guiding channel ( 51 ) having a closed top is disposed over the first pipe portion ( 521 ) of the second flow guiding channel ( 52 ), a side wall of the second end ( 512 ) of the first flow guiding channel ( 51 ) being provided with a side wall outlet ( 514 ), a gap being provided between the side wall outlet ( 514 ) and the first pipe portion ( 521 ), such that liquid flows from the side wall outlet ( 514 ) into the second flow guiding channel ( 52 );
 and wherein step d further comprises:   causing liquid to flow from the side wall outlet ( 514 ) into the main body ( 1 ) when the second flow guiding channel ( 52 ) is detached from the first flow guiding channel ( 51 ) during the supplying process of water from the heating device ( 3 ) into the flow guiding device.   
     
     
         28 . The working method for the coffee machine according to  claim 27 , wherein a backflow channel ( 21 ) is provided inside the main body ( 1 ), the backflow channel ( 21 ) being communicated to an upper portion of the water tank ( 2 ) and the first flow guiding channel ( 51 ) respectively, such that at least a part of liquid which flowed from the side wall outlet ( 514 ) enters into the backflow channel ( 21 ) and flows into the water tank ( 2 ) when the second flow guiding channel ( 52 ) is detached from the first flow guiding channel ( 51 );
 and wherein step d further comprises:   causing at least a part of liquid flowed from the side wall outlet ( 514 ) to enter into the backflow channel ( 21 ) and to flow into the water tank ( 2 ), when the second flow guiding channel ( 52 ) is detached from the first flow guiding channel ( 51 ) during the supplying process of water from the heating device ( 3 ) into the flow guiding device.   
     
     
         29 . The coffee machine according to  claim 5 , wherein the first lid body ( 6 ) is detachably engaged with the main body ( 1 ), and the first lid body ( 6 ) comprises a first upper lid body ( 61 ) and a first lower lid body ( 62 ), the first upper lid body ( 61 ) being engaged with the first lower lid body ( 62 ) so as to form the cavity ( 523 ). 
     
     
         30 . The coffee machine according to  claim 5 , wherein a cavity channel ( 526 ) is provided inside the cavity ( 523 ), the water inlet ( 524 ) and the water outlet ( 525 ) being fluidly communicated to the cavity channel ( 526 ) respectively so as to form the second flow guiding channel ( 52 ). 
     
     
         31 . The coffee machine according to  claim 6 , wherein the first lid body ( 6 ) is detachably engaged with the main body ( 1 ), and the first lid body ( 6 ) comprises a first upper lid body ( 61 ) and a first lower lid body ( 62 ), the first upper lid body ( 61 ) being engaged with the first lower lid body ( 62 ) so as to form the cavity ( 523 ). 
     
     
         32 . The coffee machine according to  claim 6 , wherein a cavity channel ( 526 ) is provided inside the cavity ( 523 ), the water inlet ( 524 ) and the water outlet ( 525 ) being fluidly communicated to the cavity channel ( 526 ) respectively so as to form the second flow guiding channel ( 52 ).