Abstract
The present invention relates to the technical field of coffee machines, and particularly relates to a capsule coffee machine comprising a brewing assembly and a nozzle connected to the brewing assembly and used for guiding the coffee out; the inlet end of the nozzle is connected to an elastic pressurizing member used for increasing the pressure of the coffee entering the nozzle; the outlet end of the nozzle is connected to a foaming cavity used for foaming the coffee ejected into the foaming cavity through the nozzle; the nozzle is further provided with a liquid discharging passage.
Claims
1. A capsule coffee machine, comprising: a brewing assembly, and a nozzle connected to the brewing assembly and used for guiding the coffee out, wherein the inlet end of the nozzle is connected to an elastic pressurizing member, and the elastic pressurizing member is used for increasing the pressure of the coffee entering the nozzle, wherein the outlet end of the nozzle is connected to a foaming cavity, and the foaming cavity is used for foaming the coffee ejected into the foaming cavity through the nozzle, wherein the nozzle is further provided with a liquid discharging passage, wherein when the water pump of the coffee machine is stopped, the coffee enters the liquid discharging passage from the nozzle, and when the water pump of the coffee machine is initiated, the coffee is ejected into the foaming cavity from the nozzle.
2. The capsule coffee machine of claim 1, wherein the elastic pressurizing member comprises a water outlet valve, wherein when the water pump of the coffee machine stops working, the water outlet valve blocks the communicating passage between the brewing assembly and the nozzle, and when the water pump of the coffee machine starts working, the water outlet valve releases the communicating passage between the brewing assembly and the nozzle.
3. The capsule coffee machine of claim 2, wherein the water outlet valve comprises a valve element and a spring, wherein the spring is used for propelling the valve element to block the communicating passage between the brewing assembly and the nozzle.
4. The capsule coffee machine of claim 2, wherein the liquid discharging passage is formed between the outlet end of the nozzle and the foaming cavity along the radial direction of the nozzle.
5. The capsule coffee machine of claim 1, wherein the elastic pressurizing member comprises an elastic pad, wherein when the water pump of the coffee machine stops working, the elastic pad blocks the communicating passage between the brewing assembly and the nozzle, and when the water pump of the coffee machine starts working, the water outlet valve releases the communicating passage between the brewing assembly and the nozzle.
6. The capsule coffee machine of claim 5, wherein the elastic pad comprises an installation portion and a deformation portion, wherein the installation portion is used for installing and fixing the elastic pad, and the deformation portion is used for generating deformation under the pressure of the coffee, thereby blocking or releasing the communicating passage between the brewing assembly and the nozzle.
7. The capsule coffee machine of claim 6, wherein a communicating hole is formed in the deformation portion for communicating the brewing assembly and the nozzle when the water pump of the coffee machine works normally.
8. The capsule coffee machine of claim 7, wherein a hole formed in the nozzle in the radial direction forms the liquid discharging passage.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0015] FIG. 1 is a structural diagram of the present invention;
[0016] FIG. 2 is a structural diagram of the first embodiment of the present invention;
[0017] FIG. 3 is a structural diagram illustrating the first state of the second embodiment of the present invention;
[0018] FIG. 4 is a structural diagram illustrating the second state of the second embodiment of the present invention.
[0019] In the Figures:
[0020] 1-Brewing Assembly, 2-Nozzle, 3-Foaming Cavity, 4-Liquid Discharging Passage, 5-Valve Element, 6-Spring, 7-Installation Portion, 8-Deformation Portion, 9-Communicating Hole.
DETAILED DESCRIPTION OF THE INVENTION
[0021] Drawings and detailed embodiments are combined hereinafter to elaborate the technical solutions of the present invention.
[0022] As shown in FIG. 1, the capsule coffee machine of the present invention comprises a brewing assembly 1 and a nozzle 2 connected to the brewing assembly 1 and used for guiding the coffee out. The inlet end of the nozzle 2 is connected to an elastic pressurizing member, and the elastic pressurizing member is used for increasing the pressure of the coffee entering the nozzle 2. The outlet end of the nozzle 2 is connected to a foaming cavity 3, and the foaming cavity 3 is used for foaming the coffee ejected into the foaming cavity 3 through the nozzle 2. The nozzle 2 is further provided with a liquid discharging passage 4. When the water pump of the coffee machine is stopped, the coffee enters the liquid discharging passage 4 from the nozzle 2, and when the water pump of the coffee machine is initiated, the coffee is ejected into the foaming cavity 3 from the nozzle 2. According to the capsule coffee machine of the present invention, the coffee discharged from the brewing assembly 1 undergoes a second pressurization by means of the elastic pressurizing member arranged between the brewing assembly 1 and the nozzle 2, thereby increasing the pressure of the coffee entering the nozzle 2. When the water pump of the coffee machine is stopped, the coffee enters the liquid discharging passage 4 from the nozzle 2, and when the water pump of the coffee machine is initiated, the coffee is ejected into the foaming cavity 3 from the nozzle 2. The coffee ejected into the foaming cavity 3 can flow out from the outlet of the coffee machine and then enter the coffee cup. The residual coffee entering the liquid discharging passage 4 can be collected by a residue tray of the coffee machine. As the residual coffee cannot stay in the coffee machine, the residual coffee can be effectively prevented from dripping continuously. Moreover, the foaming effect of the coffee can be improved, making the foam of the coffee thicker. The novel anti-dripping structure of the present invention makes the structure of the coffee machine become simpler, and achieves a low cost and an easy market promotion.
[0023] In the first embodiment of the present invention, as shown in FIG. 2, the elastic pressurizing member comprises a water outlet valve, and specifically, the water outlet valve comprises a valve element 5 and a spring 6. The spring 6 is used for propelling the valve element 5 to seal a communicating passage between the brewing assembly 1 and the nozzle 2, and the liquid discharging passage 4 is formed between the outlet end of the nozzle 2 and the foaming cavity 3 along the radial direction of the nozzle 2. When the water pump of the coffee machine stops working, the pressure of the coffee in the brewing assembly 1 is comparatively low, and the valve element 5 can seal the communicating passage between the brewing assembly 1 and the nozzle 2 under the action of the elastic force of the spring 6, thus avoiding the residual coffee in the brewing assembly 1 from entering the nozzle 2. At this point, the pressure of the residual coffee in the nozzle 2 is low, the ejection distance of the coffee ejected from the nozzle 2 is short. As the liquid discharging passage 4 is formed by the space between the foaming cavity 3 and the outlet end of the nozzle 2, and the ejection distance of the residual coffee in the nozzle 2 is not enough, the residual coffee cannot be ejected into the foaming cavity 3 but flow into the liquid discharging passage 4. When the water pump of the coffee machine works normally, the pressure of the coffee in the brewing assembly 1 is comparatively high. At this point, for the spring 6 propels the valve element 5 to keep sealing the communicating passage between the brewing assembly 1 and the nozzle 2, the coffee in the brewing assembly 1 is continuously pressurized. When the pressure of the coffee in the brewing assembly 1 can overcome the elastic force of the spring 6, the coffee presses the valve element 5, thus enabling the communicating passage between the brewing assembly 1 and the nozzle 2 to be opened. Thus, the coffee with high pressure flows into the inlet end of the nozzle 2 from the brewing assembly 1, and is ejected from the outlet end of the nozzle 2. As the pressure of the coffee is high and the ejection distance is long enough, the coffee ejected from the nozzle 2 directly passes through the liquid discharging passage 4 to enter the foaming cavity 3. Meanwhile, the coffee undergoes a second foaming in the foaming cavity 3 so that the foaming effect of coffee is greatly improved. According to the first embodiment of the present invention, the residual coffee can be effectively prevented from entering the nozzle 2 so that the dripping problem can be solved.
[0024] In the second embodiment of the present invention, as shown in FIGS. 3 and 4, the elastic pressurizing member comprises an elastic pad, and the elastic pad comprises an installation portion 7 and a deformation portion 8. The installation portion 7 is used for installing and fixing the elastic pad, and the deformation portion 8 is used for generating deformation under the pressure of the coffee, thereby blocking or releasing the communicating passage between the brewing assembly 1 and the nozzle 2. A communicating hole 9 is formed in the deformation portion 8 for communicating the brewing assembly 1 and the nozzle 2 when the water pump of the coffee machine works normally, and a hole formed in the nozzle 2 in the radial direction forms the liquid discharging passage 4. As shown in FIG. 3, in the first state of the second embodiment, when the water pump of the coffee machine is stopped, the pressure of the coffee in the brewing assembly 1 is comparatively low, and the coffee with low pressure cannot deform the deformation portion 8. As a result, the deformation portion 8 stays in the original position, and is kept a certain distance from the nozzle 2. At this point, the coffee with low pressure in the brewing assembly 1 flows out from the communicating hole in the deformation portion 8, enters the space between the deformation portion 8 and the nozzle 2, and flows out from the liquid discharging passage 4. In this way, the residual coffee can be prevented from entering the nozzle 2. As shown in FIG. 4, in the second state of the second embodiment, when the water pump of the coffee machine works normally, the pressure of the coffee in the brewing assembly 1 is comparatively high, and the deformation portion 8 possesses a certain elasticity, capable of blocking the coffee and further increasing the pressure of the coffee in the brewing assembly 1. When the pressure of the coffee in the brewing assembly 1 is high enough to deform the deformation portion 8, the deformation portion 8 deforms and moves towards the nozzle 2. Finally, the deformation portion 8 is attached to the inlet end of the nozzle 2, enabling the brewing assembly 1 and the liquid discharging passage 4 to be isolated by the deformation portion 8. At this point, the communicating hole 9 is communicated with the inlet end of the nozzle 2, allowing the coffee with high pressure in the brewing assembly 1 to pass through the inner cavity of the installation portion 7 and the communicating hole 9 of the deformation portion 8 to enter the nozzle 2. The coffee ejected from the outlet end of the nozzle 2 can also enter the foaming cavity 3, making the coffee undergo the second foaming in the foaming cavity 3. Thus, the foaming effect of the coffee can be improved. According to the second embodiment of the present invention, the dripping problem caused by the residual coffee entering the nozzle 2 can also be solved.
[0025] The above embodiments are merely the preferred embodiments of the present invention. Therefore, equivalent changes or modifications made according to the structures, features and principles described in the application range of the present invention shall be included within the protection scope of the present invention.
