Spray head structure, foaming device and beverage equipment

Abstract

The utility model discloses a spray head structure, a foaming device and beverage equipment, and the spray head structure comprises a spray head body which is provided with an air inlet cavity and a first air injection flow channel communicated with the air inlet cavity; the outer spray head is detachably connected with the spray head body, a relay air cavity is formed between the outer spray head and the spray head body, the first air injection flow channel is communicated with the relay air cavity, the outer spray head is provided with a second air injection flow channel communicated with the relay air cavity, and the second air injection flow channel is communicated with the relay air cavity. The second air injection flow channels and the first air injection flow channels are different in extending direction and / or number. According to the technical scheme of the utility model, the cost required for realizing different foaming requirements can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of beverage equipment, in particular to a spray head structure, a frothing device and beverage equipment. Background Art

[0002] Milk coffee is becoming increasingly popular. Dense milk foam can enhance the coffee's flavor and create latte art. However, in related technologies, a single nozzle structure typically only meets one foaming requirement. Users with different foaming needs typically need to purchase different nozzles, which is costly. Utility Model Content

[0003] The main purpose of the utility model is to provide a nozzle structure, aiming to reduce the cost required to achieve different foaming needs.

[0004] To achieve the above-mentioned purpose, the nozzle structure proposed by the present invention includes:

[0005] The nozzle body is provided with an air inlet cavity and a first air jet flow channel communicating with the air inlet cavity; and

[0006] The outer nozzle is detachably connected to the nozzle body, and a relay air cavity is formed between the outer nozzle and the nozzle body. The first jet flow channel is connected to the relay air cavity. The outer nozzle is provided with a second jet flow channel connected to the relay air cavity. The extension direction and / or number of the second jet flow channel are different from those of the first jet flow channel.

[0007] Optionally, the outer nozzle is connected to the nozzle body via a threaded pair or a clamping structure.

[0008] Optionally, an expansion groove is provided on the outer surface of the nozzle body corresponding to the relay air cavity.

[0009] Optionally, a first positioning step is formed on the edge of the expansion cavity sink, the external nozzle has a mounting opening connected to the nozzle body, and the mounting opening is provided with a second positioning step that matches the first positioning step.

[0010] Optionally, a sealing structure is provided at the connection between the outer nozzle and the nozzle body.

[0011] Optionally, the air inlet cavity has a nozzle axis extending along the first direction;

[0012] The first jet flow channel extends along the first direction, and / or the first jet flow channel is arranged on the axis of the nozzle.

[0013] Optionally, the air inlet cavity has a nozzle axis extending along the first direction, the outlet of the second air jet flow channel away from the relay air cavity is an external air jet outlet, and the external air jet outlet has an air jet centerline extending along the second direction;

[0014] On a reference plane passing through the jet center point of the outer jet outlet and perpendicular to the nozzle axis, a line connecting the projection point of the nozzle axis and the jet center point is arranged at an angle to the jet center line or its projection line.

[0015] Optionally, the jet centerline is set at an angle to the reference plane.

[0016] The utility model also provides a foaming device, which includes the aforementioned nozzle structure.

[0017] The present invention also provides a beverage device, comprising the aforementioned nozzle structure and / or the aforementioned frothing device.

[0018] In the technical solution of the present invention, since the extension direction and / or number of the first jet flow channel of the nozzle body and the second jet flow channel of the external nozzle are different, the foaming operation mode and / or foaming ability of the nozzle body and the external nozzle will be different, and the external nozzle is detachably connected to the nozzle body, that is, in terms of the nozzle structure, the foaming operation mode and / or foaming ability when the external nozzle is installed and when the external nozzle is removed will be different, thereby realizing that different foaming needs can be met by a product with a nozzle structure, and the cost is lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0020] Figure 1 This is a schematic diagram of the explosion structure of an embodiment of the nozzle structure of the utility model;

[0021] Figure 2 for Figure 1 Schematic diagram of the longitudinal section of the middle nozzle structure;

[0022] Figure 3 for Figure 1 Schematic diagram of the outer nozzle of the middle nozzle structure from a bottom view.

[0023] Description of Figure Numbers:

[0024] 10. Nozzle body; 11a. First jet flow channel; 12. Air inlet cavity; 16. Cavity expansion groove; 17. First positioning step; 40. External nozzle; 11b. Second jet flow channel; 111. External jet outlet; 401. Relay air cavity; 402. Second positioning step; 60. Sealing structure

[0025] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0028] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0029] The utility model provides a spray head structure.

[0030] Reference Figure 1 and Figure 2 In one embodiment of the present invention, the nozzle structure includes:

[0031] The nozzle body 10 is provided with an air inlet cavity 12 and a first air jet flow channel 11a communicating with the air inlet cavity 12; and

[0032] The outer nozzle 40 is detachably connected to the nozzle body 10, and a relay air cavity 401 is formed between the outer nozzle 40 and the nozzle body 10. The first jet flow channel 11a is connected to the relay air cavity 401. The outer nozzle 40 is provided with a second jet flow channel 11b connected to the relay air cavity 401. The extension direction and / or number of the second jet flow channel 11b are different from those of the first jet flow channel 11a.

[0033] In the technical solution of the present invention, since the extension direction and / or number of the first jet flow channel 11a of the nozzle body 10 and the second jet flow channel 11b of the external nozzle 40 are different, the foaming operation mode and / or foaming ability of the nozzle body 10 and the external nozzle 40 will be different, and the external nozzle 40 is detachably connected to the nozzle body 10, that is, in terms of the nozzle structure, the foaming operation mode and / or foaming ability when the external nozzle 40 is installed and when the external nozzle 40 is removed will be different, thereby realizing that different foaming needs can be met by a product with a nozzle structure, and the cost is lower.

[0034] In this embodiment, the nozzle body 10 and the external nozzle 40 are optionally detachably connected via a threaded pair. Typically, the nozzle body 10 is provided with external threads, and the external nozzle 40 is provided with internal threads, with the internal and external threads mating to achieve the connection between the external nozzle 40 and the nozzle body 10. A threaded pair provides a relatively reliable connection, and the threaded pair structure also provides a certain degree of sealing capability. However, the present design is not limited thereto, and the nozzle body 10 and the external nozzle 40 may also be detachably connected via, but is not limited to, a snap-fit ​​structure.

[0035] Optionally, a sealing structure 60 is provided at the connection between the outer nozzle 40 and the nozzle body 10 to ensure the sealing of the relay air cavity 401, thereby preventing the occurrence of a situation in which the foaming efficiency is reduced due to air leakage. Further optionally, the sealing structure 60 can be an O-ring or a gasket.

[0036] Furthermore, an expansion groove 16 is provided on the outer surface of the nozzle body 10 corresponding to the relay air cavity 401, so that the volume of the relay air cavity 401 is increased by the setting of the expansion groove 16, so that the relay air cavity 401 has better buffering and pressurizing capabilities.

[0037] Optionally, a first positioning step 17 is formed on the edge of the expansion cavity sink 16, and the external nozzle 40 has a mounting opening connected to the nozzle body 10, and the mounting opening is provided with a second positioning step 402 that cooperates with the first positioning step 17, so as to limit the depth of the nozzle body 10 extending into the external nozzle 40 through the cooperation between the second positioning step 402 and the first positioning step 17, so as to ensure that the volume of the relay air cavity 401 is larger, thereby ensuring a better buffering and pressurizing effect of the relay air cavity 401.

[0038] Reference Figure 2 Optionally, the air inlet cavity 12 has a nozzle axis extending in a first direction, and the first jet flow channel 11a extends in the first direction. Thus, when the external nozzle 40 is removed and the steam jet ejected from the first jet flow channel 11a is directly used for frothing, it is equivalent to a common frothing steam wand, and the user needs to use professional frothing techniques to achieve the desired frothing effect. It should be noted that only one first jet flow channel 11a can be provided, or multiple first jet flow channels 11a can be provided.

[0039] Optionally, at least one first jet flow channel 11a is provided on the nozzle axis. Typically, at the bottom of the nozzle body 10, the position through which the nozzle axis passes is usually the lowest. In this way, the first jet flow channel 11a located on the nozzle axis can also facilitate the drainage of residual water in the air inlet cavity 12, thereby reducing the probability of bacterial growth in the air inlet cavity 12.

[0040] Reference Figure 2 and Figure 3 , further, the outlet of the second jet flow channel 11b away from the relay air cavity 401 is an outer jet outlet 111, and the outer jet outlet 111 has an jet centerline extending along the second direction;

[0041] On a reference plane passing through the jet center point of the outer jet outlet 111 and perpendicular to the axis of the nozzle, a line connecting the projection point of the nozzle axis and the jet center point is set at an angle α to the jet center line or its projection line. In this way, the steam ejected from the outer jet outlet 111 can have a tangential component of a circle centered on the projection point of the nozzle axis. This tangential component can enable the steam to drive the liquid to achieve a vortex flow. Therefore, when making bubbles, it is only necessary to extend the nozzle structure into the center or near-center position of the liquid to be foamed, and tilt the outer jet outlet 111 toward the bottom of the cup of the flower drawing cylinder. A vortex flow can be formed in the flower drawing cylinder and the liquid can be rolled inside and outside, thereby achieving a good foaming effect. That is, the nozzle structure provided by the technical solution of the present invention can achieve foaming through simpler operation, thereby lowering the usage threshold of the foaming device provided with the nozzle structure.

[0042] It should be noted that, when the jet centerline is located on the reference plane, the user needs to simply adjust the inclination angle of the nozzle structure, as long as there is a certain inclination angle between the outer jet outlet 111 and the bottom of the draw cylinder cup; and when there is an angle between the jet centerline and the reference plane, the user only needs to vertically extend the nozzle structure to a position close to the liquid surface, so that there is a certain inclination angle between the outer jet outlet 111 and the bottom of the draw cylinder cup. In this case, the projection line of the jet centerline on the reference plane is set at an angle α with the aforementioned connecting line.

[0043] Reference Figure 3 , optionally, on the reference plane, the distance L from the projection point of the nozzle axis to the jet center line or the reverse extension line of its projection line is greater than or equal to 2 mm. It can be understood that the farther the tangential airflow is from the nozzle axis, that is, the farther the tangential airflow is from the center position of the liquid to be foamed, the better the vortex effect. In this embodiment, the L is ≥ 2 mm to ensure that the vortex effect that the nozzle structure can produce is good. Furthermore, the L is ≥ 3 mm to further increase the lower limit of the vortex effect that the nozzle structure can produce.

[0044] It is worth mentioning that, when the diameter of the circle where the outer jet outlet 111 is located is constant, that is, when the outer diameter of the nozzle structure is constant, the larger the angle α is, the larger the L is, and the better the vortex effect of the steam on the liquid is, but the larger the angle α is, the more difficult the nozzle structure is to process; and when the angle α is constant, the larger the outer diameter of the nozzle structure is, the larger the L is, and the better the vortex effect of the steam on the liquid is, but the larger the outer diameter of the nozzle structure is, the higher the material cost required for the nozzle structure is, and it may not be applicable to smaller drawing cylinders. In order to take into account lower processing difficulty, lower cost and wider product application range, the range of the angle α can be selected from 10° to 45°, and the diameter of the circle where the outer jet outlet 111 is located (that is, the outer diameter of the nozzle structure) can be selected from 10mm to 30mm.

[0045] Reference Figure 2 Furthermore, the jet centerline is set at an angle β to the reference plane. In this way, the user only needs to vertically extend the nozzle structure to a position close to the liquid surface, so that the external jet outlet 111 and the bottom of the latte art cylinder cup have a certain inclination angle (the foaming operation is simpler), so that the steam ejected from the external jet outlet 111 is inclined relative to the liquid surface, so that the steam jet can generate a local negative pressure cavity on the liquid surface and draw in the outside air, which is conducive to better air intake and frothing effect of the liquid.

[0046] It's worth noting that as the angle β approaches 90°, the steam jet creates a weaker liquid surface tumbling effect, less effective air entrainment, and poorer cotton-beating performance. Conversely, as the angle β approaches 0°, the steam jet is more likely to cause liquid overflow and splashing. To achieve both a good cotton-beating performance and minimize overflow and splashing, the angle β can be set within the range of 20° ≤ β ≤ 70°. To further achieve a better balance between maintaining a good cotton-beating performance and minimizing overflow and splashing, the angle β can be set within the range of 30° ≤ β ≤ 60°.

[0047] Reference Figure 3 Furthermore, there are multiple external jet outlets 111, and the multiple external jet outlets 111 are spaced apart in the circumferential direction around the axis of the nozzle. In this way, a vortex of better quality can be formed more efficiently in the drawing cylinder, and a larger range of negative pressure chambers for entraining air can be achieved, ultimately forming more delicate bubbles. In addition, the provision of multiple external jet outlets 111 can also make the horizontal components of the reverse thrust of the steam jets ejected by the external jet outlets 111 at each position offset or nearly offset each other, so that the user basically does not need to consider the impact of the horizontal displacement of the nozzle structure on the drawing. Of course, in the present utility model, only one external jet outlet 111 can be provided. In this case, during the drawing operation, additional force is required to limit the translation of the nozzle structure. This additional force can be applied by the user, or by fixing the nozzle structure in one place and providing this additional force through a fixed structure. The user only needs to hold the drawing cylinder to cooperate with the nozzle structure. Further optionally, the plurality of outer air jet outlets 111 are evenly spaced in the circumferential direction around the axis of the nozzle to completely offset the horizontal components of the reverse thrusts and make the liquid bubbles at each position more uniform.

[0048] It is understood that if the number of the outer air jet outlets 111 is too small, the beating effect of the liquid bubble will be weak; if the number of the outer air jet outlets 111 is too large, processing will be more difficult. In this embodiment, in order to achieve a good beating effect and easy processing, the number of the outer air jet outlets 111 can be selected to be 3 or 4.

[0049] Furthermore, at least a portion of the second jet flow channel 11 b extends along a curve. It is understood that, for the portion extending along the curve, the deflection angle increases gradually from the inside to the outside, which is conducive to forming a larger angle α at the outer jet outlet 111 .

[0050] Optionally, in the direction away from the nozzle axis, the curvature of the portion of the second jet flow channel 11b extending along the curve gradually increases; it can be understood that the greater the curvature, the greater the degree of bending, the faster the deflection angle increases, and it is more conducive to achieving a larger angle α.

[0051] Optionally, the entire second jet flow channel 11b extends along a curve. However, the present design is not limited thereto, and in other embodiments, a portion of the second jet flow channel 11b may also extend in a straight line.

[0052] In the present invention, the outer nozzle 40 is provided with a spray hole, and the second jet flow channel 11b includes a channel of the spray hole.

[0053] In one embodiment, the second jet flow channel 11b may only include the channel of the nozzle hole. In this case, the channel of the nozzle hole extends at least partially along a curve, and usually extends along a curve as a whole, so as to reduce the wall thickness of the outer nozzle 40 required to achieve a larger angle α, thereby reducing material cost and processing cost.

[0054] However, the present design is not limited to this. In another embodiment, the nozzle structure may further include an extension tube provided on the outer wall of the outer nozzle 40 and connected to the nozzle hole, and the second jet flow channel 11b may also include a pipe of the extension tube. It is understood that the provision of the extension tube can make the second jet flow channel 11b longer, thereby more conveniently achieving the desired orientation of the outer jet outlet 111, because the direction change of the extension tube is easier to achieve than the direction change of the channel in the wall of the outer nozzle 40. It should be noted that in this embodiment, only at least a portion of the nozzle hole channel can be set to extend along a curve, only at least a portion of the extension tube channel can be set to extend along a curve, and at least a portion of both the nozzle hole channel and at least a portion of the extension tube channel can be set to extend along a curve.

[0055] The present invention also proposes a frothing device, which includes a steam pipe and a nozzle structure connected to each other. The specific structure of the nozzle structure refers to the above-mentioned embodiment. Since the present frothing device adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0056] The present invention also provides a beverage device, comprising a nozzle structure and / or a frothing device. The specific structures of the nozzle structure and / or the frothing device are described with reference to the above-described embodiments. Since the present beverage device utilizes all of the technical solutions of all of the above-described embodiments, it at least possesses all of the beneficial effects provided by the technical solutions of the above-described embodiments, and therefore, a detailed description thereof will not be repeated here. The beverage device may be a coffee machine or other device requiring frothing of the liquid surface of the beverage being produced.

[0057] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A nozzle structure, characterized in that: include: The nozzle body is provided with an air inlet cavity and a first air jet flow channel communicating with the air inlet cavity; as well as The outer nozzle is detachably connected to the nozzle body, and a relay air cavity is formed between the outer nozzle and the nozzle body. The first jet flow channel is connected to the relay air cavity. The outer nozzle is provided with a second jet flow channel connected to the relay air cavity. The extension direction and / or number of the second jet flow channel are different from those of the first jet flow channel.

2. The nozzle structure according to claim 1, characterized in that: The outer nozzle is connected to the nozzle body via a threaded pair or a clamping structure.

3. The nozzle structure according to claim 1, wherein: An outer surface of the nozzle body is provided with a cavity expansion groove corresponding to the relay air cavity.

4. The nozzle structure according to claim 3, wherein: A first positioning step is formed on the edge of the expansion cavity sink, and the external nozzle has a mounting opening connected to the nozzle body, and the mounting opening is provided with a second positioning step that matches the first positioning step.

5. The nozzle structure according to claim 1, wherein: A sealing structure is provided at the connection between the outer nozzle and the nozzle body.

6. The nozzle structure according to any one of claims 1 to 5, characterized in that: The air inlet cavity has a nozzle axis extending along a first direction; The first jet flow channel extends along the first direction, and / or the first jet flow channel is arranged on the axis of the nozzle.

7. The nozzle structure according to any one of claims 1 to 5, characterized in that: The air inlet cavity has a nozzle axis extending in a first direction, an outlet of the second air jet flow channel away from the relay air cavity is an outer air jet outlet, and the outer air jet outlet has an air jet centerline extending in a second direction; On a reference plane passing through the jet center point of the outer jet outlet and perpendicular to the nozzle axis, a line connecting the projection point of the nozzle axis and the jet center point is arranged at an angle to the jet center line or its projection line.

8. The nozzle structure according to claim 7, wherein: The jet centerline is arranged at an angle to the reference plane.

9. A foaming device, characterized in that: The nozzle structure comprises the nozzle structure according to any one of claims 1 to 8.

10. A beverage device, characterized in that: It comprises the nozzle structure according to any one of claims 1 to 8 and / or the foaming device according to claim 9.

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