Coffee brewing mechanism and coffee machine

Abstract

The invention provides a coffee brewing mechanism which comprises a brewing head and a coffee box, and the coffee box and the brewing head are connected to form a brewing cavity; a shell, an adjusting pipe and a control piece are arranged in the brewing head, a liquid flow channel is arranged in the adjusting pipe, the adjusting pipe is arranged in the shell in a reciprocating motion mode, a liquid outlet end of the liquid flow channel is provided with a liquid outlet flow channel communicated with the liquid flow channel, and a flow speed adjusting structure is arranged in the liquid outlet flow channel. The flow speed adjusting structure is used for changing the speed of liquid flowing out of the liquid outlet end. According to the coffee brewing mechanism, the flow speed adjusting structure and the control piece are arranged in the brewing head, so that a user can directly control the flow speed of liquid entering the brewing cavity through the control piece in the brewing process, the pressure in the brewing cavity is changed, the coffee extraction pressure is adjusted in real time, and the user experience is improved. And individual requirements of different users are met.

Description

Technical Field

[0001] The present application relates to the technical field of coffee brewing equipment, and in particular to a coffee brewing mechanism and a coffee machine. Background Art

[0002] Italian coffee is a thick and dense coffee liquid that is quickly obtained by using hot water pumped out of a steam coffee machine with a pressure of about 9 bar, through extremely finely ground coffee powder that has been evenly filled and pressed. A standard single cup of espresso extracts 30ml of liquid. With espresso as the base, combined with milk, milk foam, chocolate, ice cream, etc., various combinations form the commonly drunk Italian-style coffees such as latte, cappuccino, macchiato, mocha, etc., collectively known as Italian coffee. Therefore, Italian coffee is a system, a system based on espresso quickly extracted by a steam pressure coffee machine. In the process of making espresso, the coffee powder needs to be soaked at low pressure first, then the coffee is extracted at high pressure, and finally the coffee is extracted at low pressure to ensure that the coffee reaches the best quality.

[0003] With the continuous development of the domestic coffee consumption market, more and more coffee lovers are no longer satisfied with traditional coffee forms, and are beginning to pursue special coffee or go a step further to make their own coffee. This makes it impossible for traditional fully automatic coffee machines and semi-automatic coffee machines to meet the increasingly diverse needs of consumers. Existing coffee machines currently use fixed pressure extraction, which cannot fully extract the coffee or causes over-extraction, resulting in poor final coffee results.

[0004] Therefore, how to improve the coffee machine so that users can adjust the extraction pressure in real time to meet increasingly diverse needs has become a hot topic in coffee machine research. Summary of the invention

[0005] In order to solve the problem that the pressure of the above-mentioned prior art coffee brewing equipment cannot be adjusted during coffee extraction, the present application provides a coffee brewing mechanism, including a brewing head and a coffee box, and the coffee box is connected to the brewing head to form a brewing cavity.

[0006] A shell, an adjusting tube and a control component are provided inside the brewing head. A liquid flow channel is provided inside the adjusting tube. The adjusting tube is reciprocatingly arranged in the shell. A liquid outlet channel connected to the liquid flow channel is provided at the liquid outlet end. A flow rate adjusting structure is provided in the liquid outlet channel. The flow rate adjusting structure is used to change the speed of liquid flowing out of the liquid outlet end.

[0007] The control member extends from the inside of the brewing head to the outside of the brewing head. The flow rate adjustment structure includes a blocking member and a pressure spring. One end of the blocking member abuts against the pressure spring, and the other end abuts against the liquid outlet of the liquid flow channel to block the liquid outlet. One end of the pressure spring away from the blocking member abuts against the shell. The control member controls the position of the regulating tube in the shell to control the degree of compression of the pressure spring by the liquid outlet.

[0008] During brewing, the liquid in the liquid flow channel pushes the blocking member to release the blocking of the liquid outlet end by the blocking member, and then enters the brewing cavity through the liquid outlet flow channel.

[0009] In one embodiment, the control member is sleeved on the adjusting tube, the outer wall of the adjusting tube is provided with an adjusting inclined surface, and the control member is provided with a control block that fits with the adjusting inclined surface. Under the limitation of the shell, the control member rotates in a plane with the adjusting tube as the rotation center, so that the adjusting tube reciprocates in the shell.

[0010] In one embodiment, a cam is provided at one end of the control member, and the cam abuts against the end of the regulating tube away from the blocking member. The control member is perpendicular to the plane where the cam is located, and the cam rotates with the control member as the rotation axis, thereby causing the regulating tube to reciprocate in the housing.

[0011] In one embodiment, the brewing head is provided with a control groove, and the control member extends to the outside of the brewing head through the control groove.

[0012] In one embodiment, the cam is provided with a plurality of planes, and the planes make the projection of the cam in the plane of the vertical control member a polygon.

[0013] In one embodiment, a limit rack is provided in the brewing head, the limit rack is arranged around the outside of the adjustment tube, the limit rack is arranged corresponding to the rotation range of the control member, and the control member is clamped with the limit rack through an elastic contact.

[0014] In one embodiment, the elastic contact includes a contact spring and a wedge-shaped contact, the wedge-shaped contact is meshed with a tooth segment of the limiting rack, and the contact spring connects the control member and the wedge-shaped contact.

[0015] In one embodiment, a limit gear is provided on the control member, and an elastic contact is provided inside the brewing head corresponding to the limit gear. The elastic contact includes a contact spring and a wedge-shaped contact. The wedge-shaped contact meshes with the teeth of the limit gear, and the contact spring connects the brewing head and the wedge-shaped contact.

[0016] The present application also provides a coffee machine using any of the above-mentioned coffee brewing mechanisms.

[0017] In one embodiment, a lever is provided at one end of the control member away from the brewing head, and the lever extends to the outside of the coffee machine.

[0018] Based on the above, compared with the prior art, the present application has the following beneficial effects: 1. The coffee brewing mechanism provided in the present application, by arranging a flow rate adjustment structure and a control component in the brewing head, enables the user to directly control the flow rate of the liquid entering the brewing cavity through the control component during the brewing process, thereby changing the pressure in the brewing cavity and realizing real-time adjustment of the coffee extraction pressure to meet the personalized needs of different users.

[0019] 2. The coffee machine provided in the present application adopts a coffee brewing mechanism equipped with a flow rate adjustment structure and a control component, so that the user can directly control the flow rate of the liquid entering the brewing cavity through the control component during the brewing process, thereby changing the pressure in the brewing cavity and realizing real-time adjustment of the coffee extraction pressure to meet the personalized needs of different users.

[0020] Other features and beneficial effects of the present application will be described in the subsequent description, and partly become apparent from the description, or understood by practicing the present application. The purpose and other beneficial effects of the present application can be realized and obtained by the structures specifically pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. The positional relationships described in the drawings in the following description are based on the directions in which the components are drawn in the diagrams, unless otherwise specified.

[0022] Figure 1 A three-dimensional diagram of an embodiment of the present application; Figure 2 for Figure 1 sectional view of; Figure 3 is a cross-sectional view of a coffee brewing mechanism in one embodiment of the present application; Figure 4 This is an exploded view of a brewing head in one embodiment of the present application; Figure 5 This is an exploded view of a regulating tube and a control member in one embodiment of the present application; Figure 6 A three-dimensional diagram of a brewing head in one embodiment of the present application; Figure 7 A three-dimensional diagram of a brewing head in one embodiment of the present application; Figure 8 This is an exploded view of a brewing head in another embodiment of the present application; Fig. 9This is an exploded view of a regulating tube and a control member in another embodiment of the present application; Fig.10 A three-dimensional diagram of an embodiment of the coffee machine of the present application; Fig.11 This is an exploded view of an embodiment of the coffee machine of the present application.

[0023] Reference numerals: 100 brewing head; 110 control member; 111 control block; 112 cam; 113 lever; 114 limit gear; 120 regulating tube; 121 liquid flow channel; 122 liquid outlet flow channel; 123 regulating slope; 130 flow rate regulating structure; 131 blocking member; 132 pressure spring; 140 limit rack; 150 elastic contact; 151 wedge contact; 152 contact spring; 160 control groove; 170 housing; 200 coffee box; 210 brewing cavity; 300 coffee machine. Implementation

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments; the technical features designed in different implementation modes of the present application described below can be combined with each other as long as they do not conflict with each other; based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0025] In the description of this application, it should be noted that all terms (including technical terms and scientific terms) used in this application have the same meanings as those generally understood by ordinary technicians in the field to which this application belongs, and cannot be understood as limitations on this application; it should be further understood that the terms used in this application should be understood to have meanings consistent with the meanings of these terms in the context of this specification and in the relevant fields, and should not be understood in an idealized or overly formal sense, unless explicitly defined in this application.

[0026] like Figures 1 to 9 As shown, the present application provides a coffee brewing mechanism, including a brewing head 100 and a coffee box 200, wherein the coffee box 200 is connected to the brewing head 100 to form a brewing cavity 210. When in use, ground coffee powder is placed in the brewing cavity 210.

[0027] like Figures 2 to 8As shown, the interior of the brewing head 100 is provided with a housing 170, an adjusting tube 120 and a control member 110, and the interior of the adjusting tube 120 is provided with a liquid flow channel 121, and the adjusting tube 120 is reciprocatingly arranged in the housing 170. The liquid outlet end of the liquid flow channel 121 is provided with a liquid outlet flow channel 122 interconnected with the liquid flow channel 121, and a flow rate regulating structure 130 is provided in the liquid outlet flow channel 122, and the flow rate regulating structure 130 is used to change the speed of the liquid flowing out of the liquid outlet end. Specifically, the liquid flow channel 121 is connected to the external waterway, and the brewing liquid enters the coffee brewing mechanism through the liquid flow channel 121.

[0028] The control member 110 extends from the inside of the brewing head 100 to the outside of the brewing head 100, so that the operator can directly operate the control member 110 during the brewing process without disassembling the structure, which is convenient for the operator to use.

[0029] like Figure 4 and Figure 8 As shown, the flow rate regulating structure 130 includes a blocking member 131 and a pressure spring 132. One end of the blocking member 131 abuts against the pressure spring 132, and the other end abuts against the liquid outlet of the liquid flow channel 121 to block the liquid outlet. The end of the pressure spring 132 away from the blocking member 131 abuts against the housing 170. The control member 110 controls the position of the regulating tube 120 in the housing 170 to control the degree of compression of the pressure spring 132 by the liquid outlet. During brewing, the liquid in the liquid flow channel 121 pushes the blocking member 131, releases the blocking of the liquid outlet by the blocking member 131, and then enters the brewing cavity 210 through the liquid outlet flow channel 122.

[0030] Specifically, the regulating tube 120 reciprocates in the housing 170 under the control of the control member 110, and the blocking member 131 blocks the liquid outlet of the liquid flow channel 121 under the action of the pressure spring 132. The position of the regulating tube 120 changes, resulting in a change in the degree of compression of the pressure spring 132 by the liquid outlet of the liquid flow channel 121, which changes the elastic force on the blocking member 131, thereby causing a change in the pressure required for the liquid in the liquid flow channel 121 to push open the blocking member 131. The liquid in the liquid flow channel 121 has different flow rates after pushing open the blocking member 131 under different pressure states. After the liquids with different flow rates enter the brewing cavity 210, the pressure in the brewing cavity 210 is directly changed, so that the extraction pressure of the coffee changes in real time.

[0031] In actual operation, the brewing head 100 and the coffee box 200 cooperate to form a brewing cavity 210, and the ground coffee powder is placed in the brewing cavity 210. The operator adjusts the speed of the liquid at the liquid outlet through the control part 110 outside the brewing head 100 as needed, thereby changing the extraction pressure. This arrangement allows the operator to adjust the extraction pressure at any time point during the brewing process, thereby obtaining a more personalized flavor of coffee. In addition, the coffee brewing mechanism has a low overall cost, a simple and reliable structure, can meet more types of coffee brewing needs, and is more adaptable.

[0032] In one embodiment, if Figures 3-4 As shown, the control member 110 is sleeved on the adjustment tube 120, and the control member 110 is limited by the housing 170 to only rotate in a plane with the adjustment tube 120 as the rotation center, that is, the control member 110. The outer wall of the adjustment tube 120 is provided with an adjustment slope 123, and the control block 111 of the control member 110 fits with the adjustment slope 123. When the control member 110 rotates, the control block 111 squeezes the adjustment slope 123, so that the position of the adjustment tube 120 in the housing 170 changes, so that the adjustment tube 120 reciprocates in the housing 170. The setting form of the adjustment slope 123 and the control block 111 can further reduce the installation space required for the control member 110 and the adjustment tube 120, so that the overall structure of the brewing head 100 can be more compact. At the same time, the adjustment slope 123 and the control block 111 adopt a fitting design, which has a small risk of wear and a long service life.

[0033] In one embodiment, if Figures 8-9 As shown, a cam 112 is provided at one end of the control member 110, and the cam 112 abuts against one end of the regulating tube 120 away from the blocking member 131; the control member 110 is perpendicular to the plane where the cam 112 is located, and the cam 112 rotates with the control member 110 as the rotation axis, thereby causing the regulating tube 120 to reciprocate in the housing 170. That is, the control member 110 rotates the cam 112, and the distances from the outer edge of the cam 112 at different positions to the control member 110 are different, thereby changing the distance from the regulating tube 120 to the control member 110, thereby adjusting the position of the regulating tube 120 in the housing 170. The arrangement of the cam 112 makes it unnecessary to reserve a swing space for the control member 110, and the structure is simple and the service life is long.

[0034] Further, such as Figures 6-7 As shown, the brewing head 100 is provided with a control slot 160, and the control member 110 extends to the outside of the brewing head 100 through the control slot 160. The setting of the control slot 160 can limit the swing range of the control member 110 to prevent safety problems.

[0035] Preferably, Fig. 9As shown, the cam 112 is provided with a plurality of planes, and the abutting planes make the projection of the cam 112 in the plane perpendicular to the control member 110 a polygon. That is, the cam 112 is a polygonal cam 112, and the plane on the outer edge of the cam 112 plays a fixing role when the cam 112 abuts against the regulating tube 120, which can effectively prevent the cam 112 from sliding due to a small contact surface, thereby improving the control accuracy of the control member 110.

[0036] In one embodiment, if Figures 2 to 7 As shown, a limit rack 140 is provided in the brewing head 100, and the limit rack 140 is arranged around the outside of the adjustment tube 120. The limit rack 140 is arranged corresponding to the rotation range of the control member 110, and the control member 110 is engaged with the limit rack 140 through an elastic contact 150. Specifically, during the swinging process of the control member 110, the elastic contact 150 slides out of the tooth section of the limit rack 140, and makes a sound to remind the operator of the swinging amplitude. After the swinging of the control member 110 is completed, the elastic contact 150 slides into the tooth section of the limit rack 140 to position the control member 110 to prevent it from sliding.

[0037] Preferably, Figures 2 to 7 As shown, the elastic contact 150 includes a contact spring 152 and a wedge-shaped contact 151. The wedge-shaped contact 151 can mesh well with the teeth of the limit rack 140. The wedge-shaped contact 151 is connected to the control member 110 through the contact spring 152, so that the wedge-shaped contact 151 can be extended and retracted when sliding between the teeth of the limit rack 140 to avoid wear. And it provides a certain support to the control member 110 when the control member 110 stops swinging.

[0038] In one embodiment, if Figures 8-9 As shown, a limit gear 114 is provided on the control member 110, and an elastic contact 150 is provided at a position corresponding to the limit gear 114 inside the brewing head 100. The elastic contact 150 engages with the limit gear 114 after the control member 110 rotates, and positions the control member 110 to prevent it from sliding. Specifically, the elastic contact 150 includes a contact spring 152 and a wedge-shaped contact 151, and the wedge-shaped contact 151 meshes with the teeth of the limit gear 114. The contact spring 152 connects the brewing head 100 and the wedge-shaped contact 151, and the wedge-shaped contact 151 is connected to the brewing head 100 through the contact spring 152, so that the wedge-shaped contact 151 can be extended and retracted when sliding between the teeth of the limit gear 114 to avoid wear. And when the control member 110 stops rotating, it provides certain support to the control member 110.

[0039] like Figures 10-11 As shown, the present application also provides a coffee machine 300 using any of the above-mentioned coffee brewing mechanisms.

[0040] Preferably, Figures 10-11As shown, a lever 113 is provided at one end of the control member away from the brewing head, and the lever 113 extends to the outside of the coffee machine 300.

[0041] In addition, those skilled in the art should understand that, although there are many problems in the prior art, each embodiment or technical solution of the present application can be improved in only one or several aspects, without having to solve all the technical problems listed in the prior art or background technology at the same time. Those skilled in the art should understand that the content not mentioned in a claim should not be used as a limitation on the claim.

[0042] Although the terms such as brewing head, control member, control block, cam, lever, limit gear, regulating tube, liquid flow channel, regulating slope, flow rate regulating structure, blocking member, pressure spring, limit rack, elastic contact, wedge contact, contact spring, control slot, coffee box, coffee machine, etc. are used more frequently in this article, the possibility of using other terms is not excluded. The use of these terms is only for more convenient description and explanation of the essence of this application; interpreting them as any additional restrictions is contrary to the spirit of this application; the terms "first", "second", etc. (if any) in the description and claims of the embodiments of this application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A coffee brewing mechanism, Features: It comprises a brewing head (100) and a coffee box (200), wherein the coffee box (200) is connected to the brewing head (100) to form a brewing cavity (210); The brewing head (100) is provided with a housing (170), a regulating tube (120) and a control element (110) inside; a liquid flow channel (121) is provided inside the regulating tube (120); the regulating tube (120) is arranged in the housing (170) so as to be reciprocatingly movable; a liquid outlet channel (122) is provided at a liquid outlet end of the liquid flow channel (121) and is interconnected with the liquid flow channel (121); a flow rate regulating structure (130) is provided inside the liquid outlet channel (122); the flow rate regulating structure (130) is used to change the speed of liquid flowing out of the liquid outlet end; The control member (110) extends from the inside of the brewing head (100) to the outside of the brewing head (100); the flow rate regulating structure (130) comprises a blocking member (131) and a pressure spring (132); one end of the blocking member (131) abuts against the pressure spring (132), and the other end abuts against the liquid outlet end of the liquid flow channel (121) to block the liquid outlet end; one end of the pressure spring (132) away from the blocking member (131) abuts against the shell (170); the control member (110) controls the position of the regulating tube (120) in the shell (170) to control the degree of compression of the pressure spring (132) by the liquid outlet end; During brewing, the liquid in the liquid flow channel (121) pushes up the blocking member (131), releasing the blocking of the liquid outlet by the blocking member (131), and then enters the brewing cavity (210) through the liquid outlet flow channel (122).

2. The coffee brewing mechanism according to claim 1, Features: The control member (110) is sleeved on the regulating tube (120); an regulating inclined surface (123) is provided on the outer wall of the regulating tube (120); the control member (110) is provided with a control block (111) that is in contact with the regulating inclined surface (123); and the control member (110) rotates in a plane with the regulating tube (120) as the rotation center under the restriction of the housing (170), so that the regulating tube (120) performs reciprocating motion in the housing (170).

3. The coffee brewing mechanism according to claim 1, Features: A cam (112) is provided at one end of the control member (110), and the cam (112) abuts against an end of the regulating tube (120) away from the blocking member (131); the control member (110) is perpendicular to the plane where the cam (112) is located, and the cam (112) rotates with the control member (110) as a rotation axis, thereby causing the regulating tube (120) to reciprocate in the housing (170).

4. The coffee brewing mechanism according to claim 2 or 3, Features: The brewing head (100) is provided with a control groove (160), and the control component (110) extends to the outside of the brewing head (100) through the control groove (160).

5. The coffee brewing mechanism according to claim 3, Features: The cam (112) is provided with a plurality of planes, wherein the planes make the projection of the cam (112) in a plane perpendicular to the control member (110) a polygon.

6. The coffee brewing mechanism according to claim 2, Features: A limit rack (140) is provided in the brewing head (100), the limit rack (140) is arranged around the outside of the regulating tube (120), the limit rack (140) is arranged corresponding to the rotation range of the control member (110), and the control member (110) is clamped with the limit rack (140) via an elastic contact (150).

7. The coffee brewing mechanism according to claim 6, Features: The elastic contact (150) comprises a contact spring (152) and a wedge-shaped contact (151); the wedge-shaped contact (151) meshes with a tooth pitch of the limit rack (140); and the contact spring (152) connects the control member (110) and the wedge-shaped contact (151).

8. The coffee brewing mechanism according to claim 3, Features: The control member (110) is provided with a limit gear (114); an elastic contact (150) is provided inside the brewing head (100) corresponding to the limit gear (114); the elastic contact (150) comprises a contact spring (152) and a wedge-shaped contact (151); the wedge-shaped contact (151) meshes with a tooth pitch of the limit gear (114); and the contact spring (152) connects the brewing head (100) and the wedge-shaped contact (151).

9. A coffee machine, Features: The coffee brewing mechanism according to any one of claims 1 to 9 is adopted.

10. The coffee machine according to claim 9, Features: A lever (113) is provided at one end of the control component away from the brewing head, and the lever (113) extends to the outside of the coffee machine (300).

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