Air-water mixing device and coffee machine

Abstract

The utility model discloses an air-water mixing device and a coffee maker, and the air-water mixing device comprises an upper valve body, a lower valve body, a water inlet and a water outlet, the lower valve body is detachably connected with the upper valve body, a valve cavity is formed, and an outlet is formed in the lower valve body; the rectiblock is arranged in the valve cavity and divides the valve cavity into a mixing cavity communicated with the inlet and a water outlet cavity communicated with the outlet, gas and water enter the mixing cavity through the inlet to be mixed, and a plurality of through holes are formed in the rectiblock. The structure size is small, double water and air mixing is achieved through the mixing cavity and the through holes of the rectification piece, fine bubble water can be obtained, beverage bubbles are dispersed slowly along with smaller size, the bubble water is drained through the water outlet core, outlet water is mild and not prone to splashing down, and the taste and the outlet water experience of the beverage bubble water are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of beverage preparation, in particular to a gas-water mixing device and a coffee machine. BACKGROUND

[0002] With the improvement of people's living standards, the taste of the beverage is also high, and the fine bubbles in the beverage can improve the taste and observability of the beverage. Currently, the market uses a honeycomb structure in the inner core of the frother, which has the disadvantages of large size and large bubbles in the bubble water, which is not conducive to the durability of the bubbles, and the water column is large and easy to splash.

[0003] For example, the Chinese utility model with publication number CN201958642U discloses a coffee frothing device, which comprises a coffee box, a nozzle body, a single-hole metal filter screen and a baffle. When the coffee liquid is sprayed at high speed from the single-hole metal filter screen and hits the bottom baffle, the coffee liquid is scattered by the bottom baffle and then mixed with air to generate coffee foam. The mixing time is short, the foam is affected by the environmental air pressure, and there is no flow limiting when water and air are mixed, so the water outlet effect is violent and easy to spray to other places. SUMMARY

[0004] The purpose of the embodiment of the present application is to provide a gas-water mixing device, which comprises:

[0005] an upper valve body having an inlet;

[0006] a lower valve body detachably connected with the upper valve body and forming a valve cavity, the lower valve body having an outlet;

[0007] a flow straightener arranged in the valve cavity and separating the valve cavity into a mixing cavity communicating with the inlet and a water outlet cavity communicating with the outlet, gas and water entering the mixing cavity through the inlet for mixing, a plurality of through holes being formed in the flow straightener;

[0008] a water outlet core arranged in the water outlet cavity and in contact with the flow straightener, the gas and water mixed in the mixing cavity flowing to the water outlet cavity through the through holes and being guided by the water outlet core to flow to the outlet.

[0009] The present application realizes a small structure size, achieves double water-gas mixing through the mixing cavity and the through holes of the flow straightener, is conducive to obtaining fine bubble water, and the bubble water is guided by the water outlet core and is not easy to splash.

[0010] As an optional embodiment, the upper valve body comprises a first pipe segment and a second pipe segment, an end of the first pipe segment away from the second pipe segment forms the inlet, and the inner diameter of the first pipe segment is smaller than the inner diameter of the second pipe segment.

[0011] The structure design of the upper valve body of the application can preliminarily limit the flow and accelerate the gas and water entering the mixing cavity, so that the gas and water can be more fully mixed in the mixing cavity, further improving the mixing effect, helping to obtain more delicate sparkling water, and thus improving the taste of the beverage.

[0012] As an optional embodiment, the lower valve body comprises a third pipe segment and a fourth pipe segment, one end of the third pipe segment is connected with one end of the fourth pipe segment, the other end of the third pipe segment is threadedly connected with the second pipe segment and a valve cavity is formed between the two, and the other end of the fourth pipe segment forms the outlet.

[0013] The structure design of the lower valve body of the application makes the overall structure of the device more compact, facilitating assembly and disassembly, facilitating cleaning and maintenance of the interior of the device at a later stage, and also helping to ensure the sealing of the valve cavity and making the water-gas mixing process more stable.

[0014] As an optional embodiment, the other end of the third pipe segment is inserted into the pipe cavity of the second pipe segment and threadedly connected with one end of the second pipe segment, a gap is formed between the other end of the third pipe segment and the other end of the second pipe segment, a sealing sleeve is arranged in the gap, and the sealing sleeve is pressed in the gap after the third pipe segment is threadedly connected with the second pipe segment.

[0015] The sealing sleeve enhances the sealing of the connection between the upper valve body and the lower valve body, effectively prevents water and gas leakage, ensures the normal operation of the water-gas mixing device, and improves the reliability and stability of the device.

[0016] As an optional embodiment, the sealing sleeve comprises a large-diameter part and a small-diameter part, a first step structure is formed between the outer wall of the large-diameter part and the outer wall of the small-diameter part, and the first step structure abuts against the other end of the third pipe segment.

[0017] The structure design of the sealing sleeve abutting against the third pipe segment not only facilitates the installation and positioning of the sealing sleeve, but also can better withstand the pressure during thread connection, further ensuring the sealing effect of the sealing sleeve, preventing water and gas leakage from the connection, and ensuring the normal operation of the device.

[0018] As an optional embodiment, an annular mounting groove is formed in the inner wall of the large-diameter part at the connection with the small-diameter part, the outer periphery of the flow straightener is embedded in the mounting groove, a second step structure is formed between the inner wall of the large-diameter part and the inner wall of the small-diameter part, and the flow straightener abuts against the second step structure.

[0019] The flow straightener is installed on the sealing sleeve, making the installation of the flow straightener more stable, facilitating the disassembly and replacement of the flow straightener, being conducive to the production of different effects of sparkling water and the cleaning of the interior of the device, and improving the user experience.

[0020] As an optional embodiment, the water outlet core comprises a rod portion, a flow guide plate and a plurality of partition plates, one end of the rod portion is in contact with the rectifier plate, the other end of the rod portion extends in the water outlet direction, the flow guide plate is sleeved on the rod portion close to one end thereof, a water outlet passage is formed between the flow guide plate and the cavity wall of the water outlet cavity, a plurality of the partition plates are connected with the part of the rod portion below the flow guide plate, a flow guide groove is formed between adjacent partition plates, and the mixed gas and water flowing out of the through hole flow to the outlet through the flow guide plate, the water outlet passage and the flow guide groove.

[0021] The structure of the water outlet core of the present application can more carefully guide the mixed gas and water flowing out of the through hole, so that the water outlet is more gentle, further avoiding splashing, effectively improving the water outlet experience, and also helping to maintain the stability of the bubbles and improve the taste of the beverage sparkling water.

[0022] As an optional embodiment, a third step structure is formed between the inner wall of the third pipe segment and the inner wall of the fourth pipe segment, one end of the partition plate close to the flow guide plate forms a limiting portion, and the limiting portion is pressed against the third step structure.

[0023] The structure design of the limiting portion of the partition plate abutting against the third step structure has a good limiting effect on the water outlet core, ensuring the positional stability of the water outlet core in the water outlet cavity, so as to ensure that the water outlet core can stably guide the mixed gas and water to flow out, and ensure the consistency and stability of the water outlet effect.

[0024] As an optional embodiment, when the number of the through holes = a first threshold value and the inner diameter of the through hole ≤ a second threshold value, the gas-water mixing device is in a first water outlet mode;

[0025] When the number of the through holes > the first threshold value and the inner diameter of the through hole ≤ the second threshold value, the gas-water mixing device is in a second water outlet mode;

[0026] When the inner diameter of the through hole > the second threshold value, the gas-water mixing device is in a third water outlet mode; wherein the first water outlet mode, the second water outlet mode and the third water outlet mode are different water outlet modes.

[0027] The present application corresponds to different water outlet modes by different settings of the number and inner diameter of the through hole, so that the gas-water mixing device can flexibly adjust the water outlet state according to the actual needs, meeting the diversified needs of users.

[0028] The purpose of the embodiment of the present application is to provide a coffee machine comprising a body and the aforementioned gas-water mixing device.

[0029] The coffee machine of the present application can utilize the advantages of the air-water mixing device to make beverages with fine bubbles and better taste, improve the quality and diversity of beverages made by the coffee machine, and bring better user experience.

[0030] The present application has the following advantages:

[0031] The structure of the present application is small in size, and the mixing cavity and the through hole of the rectifier plate achieve double water-air mixing, which is beneficial to obtain fine bubble water. The smaller the bubbles of the beverage are, the slower the bubbles dissipate. The bubble water is drained through the water outlet core, and the water outlet is gentle and not easy to splash. The bubble water of the beverage improves the taste and water outlet experience. Moreover, by replacing the rectifier plate, different effect bubble water can be made, and the internal device is also easy to clean, realizing the integration of playability and cleanliness, which is beneficial to improve the user experience. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 It is a schematic diagram of the whole machine of the air-water mixing device of the present application.

[0033] Figure 2 It is an exploded schematic diagram of the air-water mixing device of the present application.

[0034] Figure 3 It is a cross-sectional schematic diagram of the air-water mixing device of the present application.

[0035] Figure 4 It is a schematic diagram of the structure of the upper valve body, the sealing sleeve and the rectifier plate of the present application.

[0036] Figure 5 It is a schematic diagram of the structure of the lower valve body, the sealing sleeve, the rectifier plate and the water outlet core of the present application.

[0037] Figure 6 It is a schematic diagram of the structure of the rectifier plate of the present application.

[0038] Figure 7 It is a schematic diagram of the structure of the water outlet core of the present application.

[0039] Figure 8 It is a bottom view of the water outlet core of the present application.

[0040] Figure 9 It is a schematic diagram of the structure of the sealing sleeve of the present application.

[0041] Among them,

[0042] 1, upper valve body; 11, first pipe section; 12, second pipe section; 13, inlet; 2, lower valve body; 21, third pipe section; 22, fourth pipe section; 231, mixing cavity; 232, water outlet cavity; 24, outlet; 25, third step structure; 3, rectifier sheet; 31, through hole; 4, water outlet core; 41, rod part; 42, drainage plate; 43, partition plate; 44, water outlet channel; 45, drainage groove; 5, sealing sleeve; 51, first step structure; 52, mounting groove; 53, second step structure. DETAILED DESCRIPTION

[0043] Various aspects and features of the present application are described herein with reference to the accompanying drawings.

[0044] It is to be understood that various alterations, modifications, and improvements can be made to the embodiments of the application herein disclosed. Accordingly, it is intended to embrace all such alterations, modifications, and improvements as fall within the scope and spirit of the application.

[0045] The accompanying drawings incorporated in and forming a part of the specification, illustrate embodiments of the present application and, together with the description given above and the detailed description of the embodiments given below, serve to explain the principles of the present application.

[0046] These and other characteristics of the present application will become apparent upon consideration of the following detailed description taken in conjunction with the accompanying drawings.

[0047] It should also be understood that, although the terms "first" and "second" can be used herein to describe various elements, these elements should not be limited by these terms since such elements are commonly known to one of ordinary skill in the art and can be termed in a different manner.

[0048] The above and other aspects, features, and advantages of the present application will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings, in which:

[0049] Specific embodiments of the present application are described herein with reference to the accompanying drawings. However, it will be understood that the application is not limited to the particular embodiments described herein, but includes all alternatives falling within the scope of the application. Various modifications and changes can be made thereto by those skilled in the art which freelyproceed from the concepts disclosed herein without departing from the spirit of the application.

[0050] The specification can use phrases such as "in one embodiment," "in another embodiment," "in yet another embodiment," or "in other embodiments," which can refer to one or more embodiments of the application.

[0051] The embodiment of the present application provides a gas-water mixing device, as shown in the drawings. Figures 1-3 The gas-water mixing device comprises an upper valve body 1, a lower valve body 2, a rectifier sheet 3 and a water outlet core 4.

[0052] The upper valve body 1 has an inlet 13, the lower valve body 2 is detachably connected with the upper valve body 1 and forms a valve cavity, and the lower valve body 2 has an outlet 24.

[0053] The rectifier sheet 3 is arranged in the valve cavity and divides the valve cavity into a mixing cavity 231 communicated with the inlet 13 and a water outlet cavity 232 communicated with the outlet 24, gas and water enter the mixing cavity 231 through the inlet 13 to be mixed, and a plurality of through holes 31 are formed in the rectifier sheet 3.

[0054] The water outlet core 4 is arranged in the water outlet cavity 232 and is in contact with the rectifier sheet 3, the gas and water mixed in the mixing cavity 231 flow to the water outlet cavity 232 through the through holes 31 and are guided to the outlet 24 through the water outlet core 4.

[0055] Specifically, water and gas enter the upper valve body 1 from the inlet 13 and are mixed in the mixing cavity 231, the gas and water are mixed for a short time to form bubble water, the bubble water flows into the water outlet cavity 232 communicated with the outlet 24 through the plurality of through holes 31 in the rectifier sheet 3, the bubble water generates secondary compressed gas and water flow when passing through the through holes 31 to form a more uniform bubble water mixture, and the bubble water is guided in the water outlet cavity 232 through the water outlet core 4 and finally flows out of the outlet 24 of the lower valve body 2 to form a uniform water column with fine bubbles.

[0056] The present application realizes a small structure volume, achieves double water-gas mixing through the mixing cavity 231 and the through holes 31 in the rectifier sheet 3, is beneficial to obtaining fine bubble water, and the bubble water is guided through the water outlet core 4 and is not easy to splash.

[0057] As an optional embodiment, as shown in the drawings, Figure 4 The upper valve body 1 comprises a first pipe section 11 and a second pipe section 12, the first pipe section 11 forms the inlet 13 at an end away from the second pipe section 12, and the inner diameter of the first pipe section 11 is smaller than that of the second pipe section 12.

[0058] Specifically, water and gas first pass through the first pipe section 11 with a small inner diameter, at this time, due to the small pipe diameter, the fluid flow rate is increased to play a role of acceleration and preliminary flow limiting, then enter the second pipe section 12 with a large inner diameter, the flow rate is reduced, and the fluid pressure distribution is changed, which is helpful to more fully mix in the mixing cavity 231.

[0059] The structure design of the upper valve body 1 of the present application can preliminarily limit the flow and accelerate the gas and water entering the mixing cavity 231, so that the gas and water can be more fully mixed in the mixing cavity 231, further improving the mixing effect, helping to obtain more delicate bubble water, and thus improving the taste of the beverage.

[0060] As an optional embodiment, as shown in Figure 5 The lower valve body 2 includes a third pipe segment 21 and a fourth pipe segment 22, one end of the third pipe segment 21 is connected with one end of the fourth pipe segment 22, the other end of the third pipe segment 21 is threadedly connected with the second pipe segment 12 and a valve cavity is formed therebetween, and the other end of the fourth pipe segment 22 forms the outlet 24.

[0061] Specifically, the inner cavity of the second pipe segment 12 is provided with an internal thread, and the pipe wall of the third pipe segment 21 is provided with an external thread, and after the second pipe segment 12 is connected with the third pipe segment 21, a valve cavity is formed inside to provide a space for water-gas mixing. The mixed water-gas flows out of the outlet 24 of the fourth pipe segment 22, and the overall structure is compact, facilitating installation and disassembly.

[0062] The structure design of the lower valve body 2 of the present application makes the overall structure of the device more compact, facilitating assembly and disassembly, and facilitating cleaning and maintenance of the interior of the device at a later stage, while also helping to ensure the sealing of the valve cavity and making the water-gas mixing process more stable.

[0063] As an optional embodiment, as shown in Figure 3 The other end of the third pipe segment 21 is inserted into the inner cavity of the second pipe segment 12 and threadedly connected, a gap is formed between the other end of the third pipe segment 21 and the other end of the second pipe segment 12, a sealing sleeve 5 is arranged in the gap, and the sealing sleeve 5 is pressed in the gap after the third pipe segment 21 is threadedly connected with the second pipe segment 12.

[0064] Specifically, the third pipe segment 21 is inserted into the inner cavity of the second pipe segment 12 and threadedly connected, and a sealing sleeve 5 is arranged in the gap formed between the two. With the tightening of the thread connection, the sealing sleeve 5 is pressed in the gap, effectively preventing the leakage of water-gas in the valve cavity from the connection.

[0065] Specifically, the third pipe segment 21 is inserted into the inner cavity of the second pipe segment 12 and threadedly connected, and a sealing sleeve 5 is arranged in the gap formed between the two. With the tightening of the thread connection, the sealing sleeve 5 is pressed in the gap, effectively preventing the leakage of water-gas in the valve cavity from the connection.

[0066] The present application enhances the sealing of the connection between the upper valve body 1 and the lower valve body 2 through the sealing sleeve 5, effectively preventing the leakage of water-gas, ensuring the normal operation of the water-gas mixing device, and improving the reliability and stability of the device.

[0067] As an optional embodiment, as shown in Figure 9 The sealing sleeve 5 comprises a large-diameter part and a small-diameter part, and a first step structure 51 is formed between the outer wall of the large-diameter part and the outer wall of the small-diameter part, and the first step structure 51 abuts against the other end of the third pipe segment 21.

[0068] Specifically, the large-diameter part and the small-diameter part are sequentially arranged along the water outlet direction, the large-diameter part is close to the second pipe segment 12, and the small-diameter part is close to the third pipe segment 21. The first step structure 51 of the sealing sleeve 5 abuts against the other end of the third pipe segment 21, which can be used as a positioning structure during installation, facilitating accurate installation of the sealing sleeve 5, and at the same time, can bear the pressure during threaded connection, thereby guaranteeing the sealing effect.

[0069] The structure design that the sealing sleeve 5 abuts against the third pipe segment 21 not only facilitates the installation and positioning of the sealing sleeve 5, but also can better bear the pressure during threaded connection, further ensures the sealing effect of the sealing sleeve 5, prevents water vapor from leaking from the connection, and guarantees the normal operation of the device.

[0070] As an optional embodiment, as shown in Figure 9 An annular mounting groove 52 is formed in the inner wall at the connection between the large-diameter part and the small-diameter part, the outer periphery of the rectifier sheet 3 is embedded in the mounting groove 52, a second step structure 53 is formed between the inner wall of the large-diameter part and the inner wall of the small-diameter part, and the rectifier sheet 3 abuts against the second step structure 53.

[0071] The rectifier sheet 3 is mounted on the sealing sleeve 5, which makes the installation of the rectifier sheet 3 more stable, facilitates the disassembly and replacement of the rectifier sheet 3, is conducive to the production of bubble water with different effects and the cleaning of the inside of the device, and improves the user experience.

[0072] As an optional embodiment, as shown in Figures 7-8 The water outlet core 4 comprises a rod part 41, a drainage plate 42 and a plurality of partition plates 43, one end of the rod part 41 is in contact with the rectifier sheet 3, the other end thereof extends along the water outlet direction, the drainage plate 42 is sleeved on the rod part 41 close to one end thereof, a water outlet passage 44 is formed between the drainage plate 42 and the cavity wall of the water outlet cavity 232, a plurality of the partition plates 43 are connected to the part of the rod part 41 below the drainage plate 42, a drainage groove 45 is formed between adjacent partition plates 43, and the mixed gas and water flowing out of the through hole 31 flow to the outlet 24 through the drainage plate 42, the water outlet passage 44 and the drainage groove 45.

[0073] Specifically, the mixed gas and water flowing out of the through hole 31 of the rectifier fin 3 first contacts the drainage plate 42, then passes through the water outlet channel 44 formed by the drainage plate 42 and the cavity wall of the water outlet cavity 232, and finally flows out of the outlet 24 through the drainage groove 45 between the partition plates 43. This process makes the water outlet more gentle and avoids splashing.

[0074] The structure of the water outlet core 4 of the present application can more carefully guide the mixed gas and water flowing out of the through hole 31, making the water outlet more gentle and further avoiding splashing, effectively improving the water outlet experience, while also helping to maintain the stability of the bubbles and improve the taste of the beverage sparkling water.

[0075] As an optional embodiment, as shown in Figure 5 The inner wall of the third pipe segment 21 and the inner wall of the fourth pipe segment 22 form a third step structure 25, and the end of the partition plate 43 close to the drainage plate 42 forms a limiting part, which is pressed against the third step structure 25.

[0076] Specifically, the limiting part of the partition plate 43 of the water outlet core 4 is pressed against the third step structure 25, limiting the position of the water outlet core 4 in the water outlet cavity 232, ensuring that it stably guides the mixed gas and water to flow out, and ensuring the stability of the water outlet effect.

[0077] The structure design of the limiting part of the partition plate 43 of the present application abutting against the third step structure 25 has a good limiting effect on the water outlet core 4, ensuring the position stability of the water outlet core 4 in the water outlet cavity 232, so that the water outlet core 4 can stably guide the mixed gas and water to flow out, ensuring the consistency and stability of the water outlet effect.

[0078] When assembling the gas-water mixing device of the present application, first, the rectifier fin 3 is installed in the installation groove 52 of the sealing sleeve 5, so that it abuts against the second step structure 53.

[0079] Then, the water outlet core 4 is placed in the third pipe segment 21 of the lower valve body 2, so that the limiting part of the partition plate 43 is pressed against the third step structure 25 formed by the inner walls of the third pipe segment 21 and the fourth pipe segment 22. Then, the small-diameter part of the sealing sleeve 5 is directed towards the third pipe segment 21, so that the first step structure 51 abuts against the other end of the third pipe segment 21. At this time, one end of the rod part 41 of the water outlet core 4 contacts the rectifier fin 3.

[0080] The other end of the third pipe segment 21 of the lower valve body 2 is inserted into the pipe cavity of the second pipe segment 12 of the upper valve body 1, and is tightened by screw connection, so that the sealing sleeve 5 is pressed in the gap to achieve sealing.

[0081] When the gas-water mixing device of this application is in use, water and gas pass through the inlet 13 of the upper valve body 1, first through the first pipe section 11 with a smaller inner diameter to accelerate, and then enter the second pipe section 12 with a larger inner diameter, and then mix in the mixing chamber 231 separated by the rectifier plate 3.

[0082] The mixed water vapor enters the outlet chamber 232 through the through hole 31 on the rectifier plate 3. Inside the outlet chamber 232, the water vapor first contacts the guide plate 42 of the outlet core 4, then flows through the outlet channel 44 formed by the guide plate 42 and the wall of the outlet chamber 232, and is then guided by the guide groove 45 between the partition plates 43, and finally flows out from the outlet 24 of the lower valve body 2.

[0083] As an optional embodiment, such as Figure 6 As shown, when the number of through holes 31 equals the first threshold and the inner diameter of the through holes 31 is less than or equal to the second threshold, the gas-water mixing device is in the first water outlet mode.

[0084] When the number of through holes 31 is greater than the first threshold and the inner diameter of the through holes 31 is less than or equal to the second threshold, the gas-water mixing device is in the second water outlet mode.

[0085] When the inner diameter of the through hole 31 is greater than the second threshold, the gas-water mixing device is in the third water outlet mode; wherein, the first water outlet mode, the second water outlet mode and the third water outlet mode are different water outlet modes.

[0086] Specifically, all through holes 31 have the same diameter, with a first threshold of 3 mm and a second threshold of 0.5 mm.

[0087] First water outlet mode: When the number of through holes 31 on the rectifier plate 3 is equal to 3 and the inner diameter of the through holes 31 is ≤ When water vapor passes through these small holes, the relatively small aperture results in relatively high flow resistance, allowing the water and gas to mix for a relatively long time within the mixing chamber 231. Just like in a narrow channel, the opportunities for water and gas to collide and mix increase, leading to more thorough mixing.

[0088] In this situation, the mixed bubble water flowing out of outlet 24 is gentle because the smaller aperture buffers and constrains the water and air flow, preventing turbulence and splashing. At the same time, the thorough mixing produces abundant foam.

[0089] Second water outlet mode: When the number of through holes 31 is greater than 3 and the inner diameter of through holes 31 is still ≤ At this time, there are more channels for water vapor to pass through, although the inner diameter of the single through hole 31 is limited, so that the water vapor mixing time is still moderate, but the increase in the number of channels makes the overall water outlet time faster. The simultaneous action of multiple small holes accelerates the water vapor flow rate to a certain extent.

[0090] The generated foam is moderate, because although the water vapor mixing opportunity is relatively more, but due to the acceleration of the water outlet speed, there is not enough time for the foam to further enrich and refine.

[0091] The third water outlet mode: when the inner diameter of the through hole 31 is greater than At this time, according to the principle that the larger the area of the through hole 31, the smaller the pressure, when the pressure is constant, the large aperture greatly reduces the resistance of the water vapor passing through the rectifier sheet 3, the water vapor mixing time is short, and the water vapor can quickly pass through the rectifier sheet 3 into the water outlet cavity 232, thereby causing the water outlet time to be fast.

[0092] However, due to the short mixing time, water and gas are not fully mixed, so the generated foam is small. This mode is suitable for some scenarios where the water outlet speed is required to be high, but the foam richness requirement is relatively low.

[0093] According to the number and inner diameter of the through hole 31 on the rectifier sheet 3, different water outlet modes can be realized to meet different beverage making requirements, such as when used in a coffee machine, different bubble effect coffee beverages can be made.

[0094] The coffee machine provided by the embodiment of the present application can utilize the advantages of the gas-water mixing device to make beverages with fine bubbles and better taste, improve the quality and diversity of the coffee machine in making beverages, and bring better user experience.

[0095] As shown in Figure 2 The other end of the second pipe section 12 of the upper valve body 1 is provided with an annular mounting portion, and a mounting hole is formed in the mounting portion. The mixed bubble water device is connected with the body through the mounting hole.

[0096] The above embodiments are only exemplary embodiments of the present application and are not used to limit the present application, and the protection scope of the present application is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements to the present application within the spirit and protection scope of the present application, and such modifications or equivalent replacements shall also be considered to fall within the protection scope of the present application.

Claims

1. An air and water mixing device, characterized by, The utility model relates to a valve body, which comprises: an upper valve body (1) having an inlet (13); a lower valve body (2) detachably connected with the upper valve body (1) and forming a valve cavity, the lower valve body (2) having an outlet (24) thereon; a rectifier plate (3) arranged in the valve cavity and separating the valve cavity into a mixing cavity (231) in communication with the inlet (13) and a water outlet cavity (232) in communication with the outlet (24), gas and water entering the mixing cavity (231) through the inlet (13) for mixing, the rectifier plate (3) having a plurality of through holes (31) formed therein; a water outlet core (4) arranged in the water outlet cavity (232) and in contact with the rectifier plate (3), the gas and water mixed in the mixing cavity (231) flowing to the water outlet cavity (232) through the through holes (31) and being guided to the outlet (24) by the water outlet core (4).

2. An air and water mixing device as claimed in claim 1, characterized in that The upper valve body (1) comprises a first pipe section (11) and a second pipe section (12), the first pipe section (11) having an end away from the second pipe section (12) forming the inlet (13), the inner diameter of the first pipe section (11) being smaller than that of the second pipe section (12).

3. An air and water mixing device as claimed in claim 2, characterized in that The lower valve body (2) comprises a third pipe section (21) and a fourth pipe section (22), one end of the third pipe section (21) being connected with one end of the fourth pipe section (22), the other end of the third pipe section (21) being threadedly connected with the second pipe section (12) and forming the valve cavity therebetween, the other end of the fourth pipe section (22) forming the outlet (24).

4. An air and water mixing device as claimed in claim 3, characterized in that The other end of the third pipe section (21) is inserted into the lumen of the second pipe section (12) and threadedly connected, a gap being formed between the other end of the third pipe section (21) and the other end of the second pipe section (12), a sealing sleeve (5) being arranged in the gap, the sealing sleeve (5) being pressed in the gap after the third pipe section (21) is threadedly connected with the second pipe section (12).

5. An air and water mixing device as claimed in claim 4, characterized in that The sealing sleeve (5) comprises a large-diameter portion and a small-diameter portion, a first step structure (51) being formed between the outer wall of the large-diameter portion and the outer wall of the small-diameter portion, the first step structure (51) being in abutment with the other end of the third pipe section (21).

6. An air and water mixing device as claimed in claim 5, characterized in that An annular mounting groove (52) is formed in the inner wall at the connection between the large-diameter portion and the small-diameter portion, the outer periphery of the rectifier plate (3) being embedded in the mounting groove (52), a second step structure (53) being formed between the inner wall of the large-diameter portion and the inner wall of the small-diameter portion, the rectifier plate (3) being in abutment with the second step structure (53).

7. An air and water mixing device as claimed in claim 3, characterized in that The water outlet core (4) comprises a rod portion (41), a flow guide plate (42) and a plurality of partition plates (43), one end of the rod portion (41) is in contact with the rectifier fin (3), the other end extends in the water outlet direction, the flow guide plate (42) is sleeved on the rod portion (41) close to one end thereof, the flow guide plate (42) and the cavity wall of the water outlet cavity (232) form a water outlet passage (44) therebetween, a plurality of the partition plates (43) are connected with the part of the rod portion (41) below the flow guide plate (42), the flow guide grooves (45) are formed between adjacent partition plates (43), the mixed gas and water flowing out of the through holes (31) flow to the outlet (24) through the flow guide plate (42), the water outlet passage (44) and the flow guide grooves (45).

8. An air and water mixing device as claimed in claim 7, characterized in that The inner wall of the third pipe section (21) and the inner wall of the fourth pipe section (22) form a third step structure (25), one end of the partition plate (43) close to the flow guide plate (42) forms a limiting portion, and the limiting portion is pressed against the third step structure (25).

9. The air and water mixing device of claim 1, wherein, When the number of the through holes (31) = a first threshold value and the inner diameter of the through holes (31) ≤ a second threshold value, the gas-water mixing device is in a first water outlet mode; When the number of the through holes (31) > the first threshold value and the inner diameter of the through holes (31) ≤ the second threshold value, the gas-water mixing device is in a second water outlet mode; When the inner diameter of the through holes (31) > the second threshold value, the gas-water mixing device is in a third water outlet mode; wherein the first water outlet mode, the second water outlet mode and the third water outlet mode are different water outlet modes.

10. A coffee maker characterized in that, The gas-water mixing device as claimed in any one of claims 1-9. The gas-water mixing device as claimed in any one of claims 1-9.

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