A mixing device that is easy to clean

Abstract

The present invention relates to a mixing device that is easy to clean, comprising a pot body for containing milk, a pot lid is fitted on the pot body, a steam inlet channel and a fluid mixing chamber are provided in the pot lid, the fluid mixing chamber is communicated with a mixed fluid outlet, a fluid mixing channel is further provided in the pot lid, the fluid mixing channel communicates the steam inlet channel and the fluid mixing chamber, and a milk channel communicates the pot body and the fluid mixing channel. It is characterized in that: the pot lid comprises a pot lid body and a pot lid cover, the two are connected in a quick-release manner, and the fluid mixing channel is defined between the joint surfaces of the pot lid body and the pot lid cover, so that in the case of removing the pot lid cover, the fluid mixing channel is exposed. Compared with the prior art, the advantages of the present invention are: the fluid mixing channel is defined between the joint surfaces of the pot lid body and the pot lid cover, as long as the pot lid cover is removed, the milk scale remaining on the fluid mixing channel can be cleaned, and the cleaning is very convenient.

Description

Technical Field

[0001] The present invention belongs to the technical field of beverage preparation equipment such as coffee, and particularly relates to a mixing device for heating or foaming milk that is easy to clean. Background Art

[0002] For a mixing device of a coffee machine, in order to heat milk or generate foamed milk foam, a certain amount of steam is usually mixed with milk to heat the milk, or air is inhaled into the milk through steam injection to foam the milk into milk foam. Usually, the Venturi effect is utilized to suck the milk into a vacuum chamber, which is caused by the high speed of the steam ejected under pressure. Therefore, the pressurized steam becomes the power to enable the milk and air to enter the emulsification chamber through the throttle part, where the milk-steam-air is fully mixed and the milk is violently emulsified to generate stable foam, and then can be discharged from the outlet nozzle into the cup. There are already devices that can be plugged into the steam outlet of a coffee machine to convey milk foam according to this principle. For example, U.S. Patent No. 6499389B1 relates to a steam foaming device of this type.

[0003] However, the problem with this steam foaming device is that after a predetermined amount of the mixture has been produced, the milk inlet pipe of the mixing head, the interior of the mixing head itself, and the outlet nozzle have all come into contact with milk, so cleaning is necessary. For example, cleaning the milk flow channel from the milk inlet pipe to the mixing area and the outlet nozzle. In known devices, manual cleaning of the milk flow channel is required, so this work is labor-intensive and time-consuming, and since the relevant pipelines are hidden inside the device and can only be cleaned by flushing, it is impossible to know whether the cleaning is thorough. The time and effort spent on this cleaning and / or cleaning are actually much more than the steps of producing the mixture. Cleaning is particularly difficult when milk dries on the surface of the mixing head. On the other hand, if the cleaning is not thorough and frequent enough, hygienic problems may occur during any subsequent use of the device. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a mixing device that is easy to clean, thereby making the cleaning step easier and easier to clean thoroughly, in view of the above-mentioned prior art status.

[0005] The technical solution adopted by the present invention to solve the above technical problems is as follows: The easily cleanable mixing device includes a kettle body for containing milk, and a kettle lid is fitted on the kettle body. A steam inlet channel and a fluid mixing chamber are provided in the kettle lid. The fluid mixing chamber is communicated with a mixed fluid outlet. A fluid mixing channel is also provided in the kettle lid. The fluid mixing channel communicates the steam inlet channel and the fluid mixing chamber. Another milk channel communicates the kettle body and the fluid mixing channel. It is characterized in that: the kettle lid includes a kettle lid body and a kettle lid cover, and the two are connected in a quick-release manner, and the fluid mixing channel is defined between the joint surfaces of the kettle lid body and the kettle lid cover, so that in the case of removing the kettle lid cover, the fluid mixing channel is exposed.

[0006] In order to ensure sufficient sealing of the joint surface between the kettle lid body and the kettle lid cover and to facilitate cleaning, preferably, the joint surfaces of the kettle lid body and the kettle lid cover are both flat surfaces, and the fluid mixing channel is only defined by these two joint planes. Since the joint surfaces of the kettle lid body and the kettle lid cover are flat surfaces, the joint surfaces of the two can also be smooth mirror-finished surfaces, making it very easy to clean.

[0007] Further, the joint surface of the kettle lid body is defined by a first ceramic sheet, and the joint surface of the kettle lid cover is defined by a second ceramic sheet. Since the first ceramic sheet and the second ceramic sheet have high melting points, high hardness, excellent wear resistance, and smooth surfaces with small friction coefficients, corresponding holes or grooves are provided on the first ceramic sheet and / or the second ceramic sheet to join and form a fluid mixing channel.

[0008] In order to avoid ensuring the sealing performance of the joint surface between the first ceramic sheet and / or the second ceramic sheet under high temperature and high pressure conditions, the kettle lid body is provided with a first accommodation chamber for accommodating the first ceramic sheet, and the kettle lid cover is provided with a second accommodation chamber for accommodating the second ceramic sheet, and an elastic device capable of compensating the sealing performance between the first ceramic sheet and the second ceramic sheet is provided in the first accommodation chamber and / or the second accommodation chamber. The elastic device can slow down the stress action of the kettle lid body and the kettle lid cover on the first ceramic sheet and / or the second ceramic sheet to compensate for a certain deformation of the first ceramic sheet and / or the second ceramic sheet, thereby effectively improving their sealing performance.

[0009] Preferably, the elastic device is a silica gel pad provided below the first ceramic sheet and / or above the second ceramic sheet. The silica gel pad can also play a role in sealingly connecting the first ceramic sheet to the kettle lid body and / or in sealingly connecting the second ceramic sheet to the kettle lid cover.

[0010] Furthermore, the fluid mixing channel locally has a converging section with a Venturi effect, and further includes a steam inlet section located upstream of the converging section for introducing steam, a fluid mixing section located downstream of the converging section, and a milk channel outlet located between the converging section and the fluid mixing section and communicating with the milk channel, wherein a jet outlet for jetting steam is provided in the steam inlet section. Since the fluid mixing channel has a converging section with a local Venturi effect, it can ensure that a relatively high vacuum is generated when the steam is jetted into the converging section through the jet outlet of the steam inlet section. The relatively high vacuum can ensure that the milk is effectively sucked into the fluid mixing section, thereby producing heated milk.

[0011] To achieve the sealed connection between the first ceramic sheet and the kettle lid body, preferably, the first accommodation chamber includes a bottom wall and a side peripheral wall defining an access hole for the first ceramic sheet to enter. The elastic device includes a first silica gel pad defined on the side peripheral wall of the access hole and located below the first ceramic sheet. A first flow hole corresponding to the milk channel outlet and a second flow hole corresponding to the jet outlet are provided on the first silica gel pad. A first convex ring protruding from the upper surface of the first silica gel pad is provided around the first flow hole, and a second convex ring protruding from the upper surface of the first silica gel pad is provided around the second flow hole. A first silica gel pad is provided between the kettle lid body and the first ceramic sheet. While the first ceramic sheet is hermetically connected to the kettle lid body through the first silica gel pad, it also achieves sealing compensation with the second ceramic sheet. Flow holes corresponding to the first ceramic sheet are provided on the first silica gel pad, and the sealing around each flow hole is achieved by the arrangement of each convex ring.

[0012] To facilitate the formation of the first accommodation chamber on the kettle lid body, a simple and low-cost implementation method for assembly is as follows: The bottom wall and the side peripheral wall of the first accommodation chamber are independently arranged. Correspondingly, the kettle lid body includes a lower kettle lid body for defining the bottom wall and an upper kettle lid body for defining the side peripheral wall. The upper kettle lid body is supported on the lower kettle lid body by at least two spaced support feet, and the lower kettle lid body is recessed downward at the position corresponding to the support feet to form a recess for the support feet to support.

[0013] To avoid leaks caused by the first ceramic sheet achieving seal compensation only on its upper surface with the second ceramic sheet, as a further improvement of the present invention, a third convex ring protruding from the lower surface of the first silicone pad is further provided around the first flow hole of the first silicone pad, and a fourth convex ring protruding from the lower surface of the first silicone pad is provided around the second flow hole. Correspondingly, a first installation groove for installing the third convex ring and a second installation groove for installing the fourth convex ring are provided on the upper surface of the lower kettle lid body. Since milk and steam need to be inhaled through the corresponding flow holes of the first silicone pad and enter the first ceramic sheet, in this way, the first silicone pad serves as a seal for the transition component of milk and steam entering the first ceramic sheet, and it is necessary to avoid leakage caused by the gaps around its flow holes. Therefore, each convex ring on the lower surface of the first silicone pad can play an effective sealing role. In addition, the lower kettle lid body itself also has installation grooves for installing each convex ring, and can also control the seal compensation with the second ceramic sheet by changing the sinking depth of the first silicone pad.

[0014] To enable the lower kettle lid body to also function as a "bracket" for installing the milk channel and the steam inlet channel, further, a milk channel inlet fluidly connected to the outlet of the milk channel is opened at the bottom of the first installation groove of the lower kettle lid body, and a jet inlet fluidly connected to the jet outlet is opened at the bottom of the second installation groove. Correspondingly, the milk channel is provided on the lower surface of the lower kettle lid body, and a third installation groove for installing the corresponding supply pipe of the milk channel is provided corresponding to the first installation groove, and the steam inlet channel is also provided on the lower surface of the lower kettle lid body, and a fourth installation groove for installing the corresponding pipe body of the steam inlet channel is provided corresponding to the second installation groove.

[0015] To achieve seal compensation between the first ceramic sheet and the second ceramic sheet, in addition to providing the first silicone pad corresponding to the first ceramic sheet, preferably, the elastic device further includes a second silicone pad provided in the second accommodation chamber of the kettle lid body, and the second silicone pad is provided above the second ceramic sheet. Of course, while the second ceramic sheet is hermetically connected to the kettle lid body through the second silicone pad, it also achieves seal compensation with the first ceramic sheet.

[0016] To facilitate the setting of the second silicone pad and the second ceramic sheet, the kettle lid body is also provided as a split structure. Preferably, the kettle lid body includes an upper kettle lid body and a lower kettle lid body that are mutually fitted. The lower kettle lid body is provided with an opening for exposing the joint surface of the second ceramic sheet, the edge of the second ceramic sheet is placed on the periphery of the opening, and the second accommodation chamber is jointly defined by the outer peripheral wall of the lower kettle lid body and the inner peripheral wall adjacent to the periphery of the opening.

[0017] Further, a steam interface is adapted at the entrance of the steam inlet passage. This steam interface can be connected as a fitting at the entrance of the steam inlet passage, facilitating the user to disassemble and replace it.

[0018] Further, an air intake passage for introducing air into the fluid mixing passage is also included. The air inlet of the air intake passage is opened on the side wall of the converging section, and the air inlet can be selectively opened or closed. When the air inlet is opened and a local vacuum is generated in the converging section by injecting steam into the injection port, milk and air can be sucked into the fluid mixing section to form steam-heated air-milk foam. Since the fluid mixing passage has a converging section with a local Venturi effect, it can ensure that a relatively high vacuum is generated when steam is injected into the converging section through the steam inlet section. The relatively high vacuum can not only ensure effectively sucking air and milk into the steam-milk-air fluid mixing section, but also enable the unfoamed milk to be sucked in again and foamed, thereby ultimately improving the foaming effect.

[0019] Further, the air intake passage can selectively open or close the air inlet. Among them, in a coffee machine, two fluid mixing passages for generating heated milk or foamed milk foam, i.e., two fluid mixing passages, can be fixedly provided respectively, or only one fluid mixing passage can be provided, but the opening or closing of the air inlet can be selectively chosen, which depends on whether the user needs foamed milk.

[0020] To accelerate the speed of air entering the fluid mixing passage, preferably, the cross-section of the air intake passage gradually becomes smaller along the flow direction of the air flow. Due to the design of the decreasing cross-section of the air intake passage, the flow velocity of the air flow can be accelerated, thereby ultimately improving the foaming effect.

[0021] For the convenience of the cleaning process and to make the cleaning steps easier, the present invention is designed such that the kettle lid cover and the kettle lid body are in a quick-disassembly mode. Preferably, the kettle lid cover is rotatably connected to the kettle lid body between an open position and a closed position, and a locking member for locking the kettle lid cover in the closed position is provided on the kettle lid body. During use, only by rotating the kettle lid cover relative to the kettle lid body by a certain angle can it be opened or closed, allowing the kettle lid cover and the kettle lid body to be assembled or separated without using tools.

[0022] To further facilitate the connection, disassembly, and reassembly of the kettle lid body and the kettle lid cover, the locking member is a card slot arranged on the kettle lid body around the periphery of the fluid mixing channel. Correspondingly, the kettle lid cover is provided with a snap foot that can be inserted into the card slot. When the snap foot is inserted into the card slot and rotated by an angle, the snap foot is snapped onto the card slot. The snap foot is generally in an inverted L shape, and the opening diameter of the card slot at the corresponding closing position is narrower than that at the opening position. When the snap foot is snapped at the narrower position, the kettle lid cover and the kettle lid body are in the closed state. Correspondingly, the snap foot for connecting the kettle lid cover to the kettle lid body in a quick-disassembly manner is provided on the lower kettle lid cover.

[0023] To realize the layout and distribution of each card slot and the recessed part, preferably, the card slots are arranged adjacent to each recessed part and protrude from the upper surface of the lower kettle lid body. Correspondingly, an opening for exposing them is formed on the lower kettle lid body.

[0024] To realize the fluid connection among the lower kettle lid body, the first silica gel pad, and the first ceramic sheet, preferably, a concave cavity corresponding to the fluid mixing cavity is provided in the inner periphery surrounded by the card slots on the lower kettle lid body, and through holes corresponding to the concave cavity are respectively provided on the first silica gel pad and the first ceramic sheet.

[0025] Compared with the prior art, the advantages of the present invention are as follows: 1. The fluid mixing channel is defined between the joint surfaces of the kettle lid body and the kettle lid cover. As long as the kettle lid cover is removed, the milk scale remaining on the fluid mixing channel can be cleaned, which is very convenient and the cleaning steps are easier; 2. The disassembly and assembly method of the kettle lid cover and the kettle lid body is quick disassembly, and the disassembly and assembly are simpler. Description of the Drawings

[0026] Figure 1 Schematic perspective view of the mixing device in the embodiment of the present invention;

[0027] Figure 2 Schematic view of the structure when the shell lid is opened relative to the shell body in the embodiment of the present invention;

[0028] Figure 3 Schematic view of the structure of the shell lid at an angle in the embodiment of the present invention;

[0029] Figure 4 Cross-sectional view of the shell lid in the embodiment of the present invention;

[0030] Figure 5 Schematic view of the structure of the lower kettle lid cover of the shell lid in the embodiment of the present invention;

[0031] Figure 6 Cross-sectional view of the structure when the shell lid is in the closed state relative to the shell body in the embodiment of the present invention;

[0032] Figure 7 This is a structural cross-sectional view of the shell cover in an open state relative to the shell body in an embodiment of the present invention;

[0033] Figure 8 This is a schematic structural diagram of the first silicone pad at an angle in an embodiment of the present invention;

[0034] Figure 9 This is a schematic structural diagram of the first silicone pad at another angle in an embodiment of the present invention;

[0035] Figure 10 This is a schematic structural diagram of the lower lid body of the kettle lid body in an embodiment of the present invention;

[0036] Figure 11 This is a schematic structural diagram of the lower lid body of the kettle lid body at another angle in an embodiment of the present invention;

[0037] Figure 12 This is a schematic structural diagram of the first ceramic sheet disposed on the kettle lid body in an embodiment of the present invention (showing the fluid mixing channel);

[0038] Figure 13 is Figure 1 top view;

[0039] Figure 14 is Figure 13 cross-sectional view in the A-A direction of (the curve shows the flow direction of milk and steam);

[0040] Figure 15 This is a schematic exploded view of the mixing device in an embodiment of the present invention. Detailed implementation manners

[0041] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0042] As Figures 1 to 15As shown, it is a preferred embodiment of the present invention. The easily cleanable mixing device of this embodiment includes a pot body 1 for containing milk. A pot lid 2 is fitted on the pot body 1. A steam inlet channel 3 and a fluid mixing chamber 4 are provided inside the pot lid 2. The fluid mixing chamber 4 communicates with a mixed fluid outlet 5. A fluid mixing channel 6′, 6″ is also provided inside the pot lid 2. The fluid mixing channel 6′, 6″ communicates the steam inlet channel 3 and the fluid mixing chamber 4. Another milk channel 9 communicates the pot body 1 and the fluid mixing channel 6′, 6″. The pot lid 2 includes a pot lid body 21 and a pot lid cover body 22, which are connected in a quick-release manner. And the fluid mixing channel 6′, 6″ is defined between the joint surfaces of the pot lid body 21 and the pot lid cover body 22. Thus, in the case of removing the pot lid cover body 22d, the fluid mixing channel 6′, 6″ is exposed. By defining the fluid mixing channel 6′, 6″ between the joint surfaces of the pot lid body 21 and the pot lid cover body 22, as long as the pot lid cover body 22d is removed, the milk scale remaining on the fluid mixing channel 6′, 6″ can be cleaned, and the cleaning is very convenient. Among them, the pot lid cover body 22 is rotatably connected to the pot lid body 21 between an open position and a closed position. A locking member for locking the pot lid cover body 22 in the closed position is provided on the pot lid body 21. The locking member is a clamping groove 214 arranged at the periphery of the pot lid body 21 around the fluid mixing channel 6′, 6″. Correspondingly, the pot lid cover body 22 is provided with a clamping leg 224 that can be inserted into the clamping groove 214. In the state where the clamping leg 224 is inserted into the clamping groove 214 and rotated by an angle, the clamping leg 224 is clamped on the clamping groove 214. The clamping leg 224 is basically in an inverted L shape, and the aperture of the opening 215a of the clamping groove 214 corresponding to the closed position is narrower than the aperture of the opening 215a in the open position. When the clamping leg 224 is clamped at the narrowed part, the pot lid cover body 22 and the pot lid body 21 are in a closed state. When in use, only need to rotate the pot lid cover body 22 relative to the pot lid body 21 by a certain angle to open or close, so that the pot lid cover body 22 and the pot lid body 21 can be assembled or separated without using tools.

[0043] See Figures 2 to 7As shown, since the joint surface of the lid body 22 and the lid main body 21 is a flat surface, the fluid mixing channels 6′ and 6″ are defined only by these two joint planes. To ensure sufficient sealing of the joint surface between the lid main body 21 and the lid body 22 and to facilitate cleaning, the joint surface of the lid main body 21 is preferably defined by the first ceramic sheet 7, and the joint surface of the lid body 22 is defined by the second ceramic sheet 8. Because the first ceramic sheet 7 and the second ceramic sheet 8 have a high melting point, high hardness, excellent wear resistance, and a smooth surface with a small friction coefficient, although corresponding holes or grooves can be formed on both the first ceramic sheet 7 and the second ceramic sheet 8 to form the fluid mixing channels 6′ and 6″, or corresponding holes or grooves can be independently formed on the opposite holes or grooves on the first ceramic sheet 7 or the second ceramic sheet 8. In this embodiment, the grooves or holes corresponding to the fluid mixing channels 6′ and 6″ are directly formed on the first ceramic sheet 7, so that the second ceramic sheet 8 of the lid body 22 only needs to expose its joint surface. In addition, in order to avoid ensuring the sealing performance of the joint surface between the first ceramic sheet 7 and the second ceramic sheet 8 under high temperature and high pressure conditions, the lid main body 21 is provided with a first accommodation chamber 210 for accommodating the first ceramic sheet 7, and the lid body 22 is provided with a second accommodation chamber 220 for accommodating the second ceramic sheet 8, and an elastic device capable of compensating the sealing performance between the first ceramic sheet 7 and the second ceramic sheet 8 is provided in the first accommodation chamber 210 and / or the second accommodation chamber 220. This elastic device can not only slow down the stress action of the lid main body 21 and the lid body 22 on the first ceramic sheet 7 and / or the second ceramic sheet 8, compensate for a certain deformation of the first ceramic sheet 7 and / or the second ceramic sheet 8, but also effectively improve their sealing performance.

[0044] Reference Figure 6 and 7, in order to achieve the sealed connection between the first ceramic sheet 7 and the lid body 21, the first accommodating chamber 210 includes a bottom wall and a peripheral wall defining an access hole for the first ceramic sheet 7 to enter. The elastic device includes a first silica gel pad 10 defined on the peripheral wall of the access hole and located below the first ceramic sheet 7. A first through hole 101 corresponding to the milk passage outlet 64 and a second through hole 102 corresponding to the injection outlet 621 are provided on the first silica gel pad 10. A first convex ring 103 protruding from the upper surface of the first silica gel pad 10 is provided around the first through hole 101, and a second convex ring 104 protruding from the upper surface of the first silica gel pad 10 is provided around the second through hole 102. A first silica gel pad 10 is provided between the lid body 21 and the first ceramic sheet 7. While the first ceramic sheet 7 is hermetically connected to the lid body 21 through the first silica gel pad 10, it also achieves sealing compensation with the second ceramic sheet 8. Corresponding through holes are provided on the first silica gel pad 10 corresponding to the first ceramic sheet 7, and the sealing around each through hole is achieved by the arrangement of each convex ring. Similarly, in order to achieve the sealing compensation of the second ceramic sheet 8 relative to the first ceramic sheet 7 and the sealed connection with the lid 22, a second silica gel pad 12 is provided in the second accommodating chamber 220 in the lid 22. As shown in the figure, the lid 22 includes an upper lid body 22c and a lower lid body 22d that are mutually fitted. The lower lid body 22d is provided with an opening 221d for exposing the joint surface of the second ceramic sheet 8. The edge of the second ceramic sheet 8 is placed on the periphery of the opening 221d, and the second accommodating chamber 220 is jointly defined by the outer peripheral wall 222d of the lower lid body 22d and the inner peripheral wall 223d adjacent to the periphery of the opening 221d. In the state where the upper lid body 22c and the lower lid body 22d are mutually fitted together, the second silica gel pad 12 and the second ceramic sheet 8 provided in the second accommodating chamber 220 in the lid 22 can be tightly connected.

[0045] Among them, referring to Figure 12, the fluid mixing channels 6', 6" partially have a converging section 61 with a Venturi effect, and further include a steam inlet section 62 located upstream of the converging section 61 for introducing steam, a fluid mixing section 63 located downstream of the converging section 61, and a milk channel outlet 64 located between the converging section 61 and the fluid mixing section 63 and communicating with the milk channel 9. An ejection outlet 621 for ejecting steam is provided in the steam inlet section 62. Since the fluid mixing channels 6', 6" have a converging section 61 with a local Venturi effect, it can ensure that a relatively high vacuum is generated when steam is ejected into the converging section 61 through the ejection outlet 621 of the steam inlet section 62. The relatively high vacuum degree can not only effectively suck milk into the fluid mixing section 63, thus generating heated milk. In this embodiment, there are two fluid mixing channels 6', 6". One is specifically used for generating heated milk, which may be called the first fluid mixing channel 6'; the other is specifically used for generating milk foam, which may be called the second fluid mixing channel 6". For this reason, the second fluid mixing channel 6" includes an air intake channel 13 that can introduce air into the fluid mixing channels 6', 6". The air inlet 131 of the air intake channel 13 is provided on the side wall of the converging section 61. Under the action of opening the air inlet 131 and generating a local vacuum in the converging section 61 by ejecting steam into the ejection port, milk and air can be sucked into the fluid mixing section 63 to form steam-heated air-milk foam. Since the second fluid mixing channel 6" has a converging section 61 with a local Venturi effect, it can ensure that a relatively high vacuum is generated when steam is ejected into the converging section 61 through the steam inlet section 62. The relatively high vacuum degree can not only effectively suck air and milk into the steam-milk-air fluid mixing section 63, but also enable the unfoamed milk to be sucked in again and foamed, thus ultimately improving the foaming effect; in addition, the cross-section of the air intake channel 13 preferably gradually becomes smaller along the flow direction of the air flow. Due to the design of the decreasing cross-section of the air intake channel 13, the flow rate of the air flow can be increased, thus ultimately improving the foaming effect. Of course, in order to generate foamed milk or only heated milk, the respective fluid mixing channels can be independently provided, or they can be integrated into one. When integrated into one, it is necessary to design to selectively open or close the air inlet 131. A steam interface 31 is also adapted at the inlet of the steam inlet channel 3. The steam interface 31 can be connected as a fitting at the inlet of the steam inlet channel 3 to facilitate the user to disassemble and replace.

[0046] In order to facilitate the formation of the first accommodating chamber 210 in the kettle lid body 21, a simple and low-cost implementation method for assembly is as follows: the bottom wall and the side peripheral wall of the first accommodating chamber 210 are independently arranged. Correspondingly, the kettle lid body 21 includes a lower kettle lid body 21a for defining the bottom wall and an upper kettle lid body 21b for defining the side peripheral wall. The upper kettle lid body 21b is supported on the lower kettle lid body 21a by at least two spaced support feet 211b. The lower kettle lid body 21a is recessed downward at the position corresponding to the support feet 211b to form recessed portions 211a for the support feet 211b to support. Each of the card slots 214 corresponding to the quick disassembly and assembly structure is also arranged on the lower kettle lid body 21a. Each of the card slots 214 is adjacent to the corresponding recessed portion 211a respectively. Each of the card slots 214 protrudes from the upper surface of the lower kettle lid body 21a, and an opening 215a for exposing it is formed on the lower kettle lid body 21a. In order to achieve the fluid connection among the lower kettle lid body 21a, the first silica gel pad 10 and the first ceramic sheet 7, a concave cavity 216a corresponding to the fluid mixing chamber 4 is further provided in the inner periphery surrounded by the card slots 214 on the lower kettle lid body 21a. A first through hole 109 corresponding to the concave cavity 216a is provided on the first silica gel pad 10, and a second through hole 700 corresponding to the concave cavity 216a is provided on the first ceramic sheet 7.

[0047] In order to avoid leaks caused by the first ceramic sheet 7 only achieving sealing compensation with the second ceramic sheet 8 on the upper surface, a third convex ring 105 protruding from the lower surface of the first silica gel pad 10 is further provided around the first flow hole 101 of the first silica gel pad 10, and a fourth convex ring 106 protruding from the lower surface of the first silica gel pad 10 is provided around the second flow hole 102. Correspondingly, a first installation groove 107 for installing the third convex ring 105 and a second installation groove 108 for installing the fourth convex ring 106 are provided on the upper surface of the lower kettle lid body 21a. Since milk and steam need to be inhaled through the corresponding flow holes of the first silica gel pad 10 and enter the first ceramic sheet 7, in this way, the first silica gel pad 10 serves as a seal for the transition component of milk and steam entering the first ceramic sheet 7, and it is necessary to avoid leakage caused by the gaps around its flow holes. Therefore, each convex ring on the lower surface of the first silica gel pad 10 can play an effective sealing role. In addition, the lower kettle lid body 21a itself also has installation grooves for installing each convex ring, and can also control the sealing compensation with the second ceramic sheet 8 by changing the sinking depth of the first silica gel pad 10.

[0048] Finally, in order to enable the lower lid body 21a to also function as a "support" for installing the milk channel 9 and the steam inlet channel 3, further, a milk channel inlet 1071 that is in fluid communication with the milk channel outlet 64 is provided at the bottom of the first installation groove 107 of the lower lid body 21a, and a jet inlet 1081 that is in fluid communication with the jet outlet 621 is provided at the bottom of the second installation groove 108. Correspondingly, the milk channel 9 is disposed on the lower surface of the lower lid body 21a, and a third installation groove 213a for installing the supply pipe 90 corresponding to the milk channel 9 is provided corresponding to the first installation groove 107. The steam inlet channel 3 is also disposed on the lower surface of the lower lid body 21a, and a fourth installation groove 212a for installing the pipe body 30 corresponding to the steam inlet channel 3 is provided corresponding to the second installation groove 108.

[0049] As Figures 3 to 7 shown, during use, simply insert the snap feet 224 of the lid body 22 into the card slots 214 of the lid body 21. When the snap feet 224 are inserted into the card slots 214 and rotated by an angle towards the closed position, the snap feet 224 are snapped into the card slots 214 to close the lid body 22. After power is turned on, if the user needs to make heated milk, the first fluid mixing channel 6' dedicated to generating heated milk can be utilized. At this time, the first flow holes 101 on the first silica gel pad 10, the milk channel outlet 64 on the first ceramic sheet 7, and the milk channel 9 are in a fluid-connected state, and the second flow holes 102 on the first silica gel pad 10, the jet outlet 621 on the first ceramic sheet 7 for jetting steam, and the steam inlet channel 3 are also in a fluid-connected state. High-temperature steam is ejected from the second flow holes 102 on the first silica gel pad 10 through the jet outlet 621 of the first ceramic sheet 7 to the steam inlet section 62. Since the fluid mixing channel has a converging section 61 with a local Venturi effect, it can ensure that a relatively high vacuum is generated when the steam is jetted into the converging section 61 through the jet outlet 621 of the steam inlet section 62. The relatively high vacuum can not only effectively suck the milk into the fluid mixing section 63 to generate heated milk;

[0050] If the user needs to make milk foam, the second fluid mixing channel 6″ dedicated to generating milk foam can be utilized. Of course, the first silica gel pad 10 also has corresponding flow holes such as the third flow hole 110 that are in fluid communication with the milk channel outlet 64 on the first ceramic sheet 7 and the milk channel 9, and the first silica gel pad 10 also has corresponding flow holes such as the fourth flow hole 111 that are in fluid communication with the jet outlet 621 on the first ceramic sheet 7 for jetting steam, the steam inlet channel 3, and the air inlet channel 13. When a relatively high vacuum is generated when the steam is jetted into the converging section 61 through the steam inlet section 62, air and milk are sucked into the steam-milk-air fluid mixing section 63 to finally achieve the purpose of making milk foam;

[0051] When cleaning is required, rotate the lid body 22 of the kettle lid relative to the kettle lid body 21 to the open position, and the fluid mixing channel provided on the first ceramic sheet 7 can be directly exposed. Then, take out the first ceramic sheet 7 from the first accommodating chamber 210 of the kettle lid body 21, and cleaning can be directly carried out. The cleaning process only requires two cleaning steps of disassembling and washing to thoroughly clean the milk remaining on the fluid mixing channel.

Claims

1. A mixing device that is easy to clean, comprising a pot body (1) for containing milk, a pot lid (2) is fitted on the pot body (1), a steam inlet channel (3) and a fluid mixing chamber (4) are provided in the pot lid (2), the fluid mixing chamber (4) is communicated with a mixed fluid outlet (5), a fluid mixing channel (6′, 6″) is further provided in the pot lid (2), the fluid mixing channel (6′, 6″) communicates the steam inlet channel (3) and the fluid mixing chamber (4), and there is also a milk channel (9) communicating the pot body (1) and the fluid mixing channel (6′, 6″), characterized in that: The kettle lid (2) includes a kettle lid body (21) and a kettle lid cover (22), which are connected in a quick-release manner, and the fluid mixing channels (6′, 6″) are defined between the joint surfaces of the kettle lid body (21) and the kettle lid cover (22), so that in the case of removing the kettle lid cover (22d), the fluid mixing channels (6′, 6″) are exposed.

2. The easily cleanable mixing device according to claim 1, wherein: The joint surfaces of the kettle lid body (21) and the kettle lid cover (22) are both flat surfaces, and the fluid mixing channels (6′, 6″) are defined only by these two joint planes.

3. The easily cleanable mixing device according to claim 2, wherein: The joint surface of the kettle lid body (21) is defined by a first ceramic sheet (7), and the joint surface of the kettle lid cover (22) is defined by a second ceramic sheet (8).

4. The easily cleanable mixing device according to claim 3, characterized in that: The kettle lid body (21) is provided with a first accommodation chamber (210) for accommodating the first ceramic sheet (7), and the kettle lid cover (22) is provided with a second accommodation chamber (220) for accommodating the second ceramic sheet (8), and an elastic device for compensating the sealing between the first ceramic sheet (7) and the second ceramic sheet (8) is arranged in the first accommodation chamber (210) and / or the second accommodation chamber (220).

5. The easily cleanable mixing device according to claim 4, characterized in that: The elastic device is a silica gel pad arranged below the first ceramic sheet (7) and / or above the second ceramic sheet (8).

6. The easily cleanable mixing device according to claim 5, characterized in that: The fluid mixing channels (6′, 6″) partially have a converging section (61) with a Venturi effect, and further include a steam inlet section (62) for introducing steam located upstream of the converging section (61), a fluid mixing section (63) located downstream of the converging section (61), and a milk channel outlet (64) located between the converging section (61) and the fluid mixing section (63) and communicating with the milk channel (9), wherein a jet outlet (621) for jetting steam is provided in the steam inlet section (62).

7. The easily cleanable mixing device according to claim 6, wherein: The first accommodation chamber (210) includes a bottom wall and a side peripheral wall defining an access hole for the first ceramic sheet (7) to enter. The elastic device includes a first silica gel pad (10) defined on the side peripheral wall of the access hole and located below the first ceramic sheet (7). A first flow hole (101) corresponding to the milk channel outlet (64) and a second flow hole (102) corresponding to the jet outlet (621) are provided on the first silica gel pad (10). A first convex ring (103) protruding from the upper surface of the first silica gel pad (10) is arranged around the first flow hole (101), and a second convex ring (104) protruding from the upper surface of the first silica gel pad (10) is arranged around the second flow hole (102).

8. The easily cleanable mixing device according to claim 7, wherein: The bottom wall and the side peripheral wall of the first accommodating chamber (210) are independently arranged. Correspondingly, the kettle lid body (21) includes a lower kettle lid body (21a) for defining the bottom wall and an upper kettle lid body (21b) for defining the side peripheral wall. The upper kettle lid body (21b) is supported on the lower kettle lid body (21a) by at least two spaced support feet (211b), and the lower kettle lid body (21a) is recessed downward at a position corresponding to the support feet (211b) to form a recessed portion (211a) for the support feet (211b) to support.

9. The easy-to-clean mixing device according to claim 8, characterized in that: The first silicone pad (10) is further provided with a third convex ring (105) protruding from the lower surface of the first silicone pad (10) around the first flow hole (101) and a fourth convex ring (106) protruding from the lower surface of the first silicone pad (10) around the second flow hole (102). Correspondingly, the upper surface of the lower kettle lid body (21a) is provided with a first installation groove (107) for installing the third convex ring (105) and a second installation groove (108) for installing the fourth convex ring (106).

10. The easily cleanable mixing device according to claim 9, wherein: The bottom of the first installation groove (107) of the lower kettle lid body (21a) is provided with a milk channel inlet (1071) that is in fluid communication with the milk channel outlet (64), and the bottom of the second installation groove (108) is provided with a jet inlet (1081) that is in fluid communication with the jet outlet (621). Correspondingly, the milk channel (9) is arranged on the lower surface of the lower kettle lid body (21a), and a third installation groove (213a) for installing the corresponding supply pipe (90) of the milk channel (9) is provided corresponding to the first installation groove (107). The steam inlet channel (3) is also arranged on the lower surface of the lower kettle lid body (21a), and a fourth installation groove (212a) for installing the corresponding pipe body (30) of the steam inlet channel (3) is provided corresponding to the second installation groove (108).

11. The easily cleanable mixing device according to any one of claims 7 to 10, characterized in that: The elastic device further includes a second silicone pad (12) arranged in the second accommodating chamber (220) of the kettle lid cover (22), and the second silicone pad (12) is arranged above the second ceramic sheet (8).

12. The easily cleanable mixing device according to claim 11, wherein: The kettle lid cover (22) includes an upper kettle lid cover (22c) and a lower kettle lid cover (22d) that are mutually fitted. The lower kettle lid cover (22d) is provided with an opening (221d) for exposing the joint surface of the second ceramic sheet (8). The edge of the second ceramic sheet (8) is placed on the periphery of the opening (221d), and the second accommodating chamber (220) is jointly defined by the outer peripheral wall (222d) of the lower kettle lid cover (22d) and the inner peripheral wall (223d) adjacent to the periphery of the opening (221d).

13. The easy-to-clean mixing device according to any one of claims 1 to 10, characterized in that: A steam interface (31) is adapted at the entrance of the steam inlet channel (3).

14. The easy-to-clean mixing device according to any one of claims 7 to 10, characterized in that: It further includes an air intake passage (13) capable of introducing air into the fluid mixing passages (6′, 6″). The air inlet (131) of the air intake passage (13) is opened on the side wall of the converging section (61). Under the action of opening the air inlet (131) and generating local vacuum in the converging section (61) by means of steam injected into the injection port, milk and air can be sucked into the fluid mixing section (63) to form steam-heated air-milk foam.

15. The easily cleanable mixing device according to claim 14, wherein: The air intake passage (13) can selectively open or close the air inlet (131).

16. The easily cleanable mixing device according to claim 15, characterized in that: The cross-section of the air intake passage (13) gradually becomes smaller along the flow direction of the air flow.

17. The easy-to-clean mixing device according to any one of claims 1 to 10, characterized in that: The lid body (22) of the kettle lid is rotatably connected to the kettle lid body (21) between an open position and a closed position, and a locking member for locking the lid body (22) to the closed position is provided on the kettle lid body (21).

18. The easily cleanable mixing device according to claim 17, wherein: The locking member is a card slot (214) arranged on the kettle lid body (21) at the periphery of the fluid mixing passages (6′, 6″). Correspondingly, the lid body (22) of the kettle lid is provided with a buckle foot (224) that can be inserted into the card slot (214). In a state where the buckle foot (224) is inserted into the card slot (214) and rotated by an angle, the buckle foot (224) is buckled on the card slot (214).

19. The easily cleanable mixing device according to claim 18, characterized in that: The card slot (214) is adjacent to each recess (211a) and protrudes from the upper surface of the lower kettle lid body (21a). Correspondingly, an opening (215a) for exposing it is formed on the lower kettle lid body (21a).

20. The easy-to-clean mixing device according to claim 19, wherein: A concave cavity (216a) corresponding to the fluid mixing cavity (4) is provided in the inner periphery surrounded by the card slot (214) on the lower kettle lid body (21a), and through holes (109, 700) corresponding to the concave cavity (216a) are respectively provided on the first silica gel pad (10) and the first ceramic sheet (7).

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