Liquid tank, infusion assembly and coffee machine

Abstract

The utility model discloses a part of embodiments relates to a kind of coffee machines, especially design a liquid tank, infusion assembly and coffee machine, the liquid tank has the slot of the liquid medium pumped from pump liquid device can be introduced, and the tank bottom opposite with slot;Tank bottom is equipped with the liquid outlet end connected with the extraction device of coffee machine;Tank bottom is overall as inclined side, makes the liquid inlet end of extraction device close to liquid outlet end, and make the liquid medium into liquid tank can flow to the direction of liquid outlet end.Compared with prior art, since the tank bottom of liquid tank is overall as inclined side, liquid medium is guided to flow to liquid outlet end by tank bottom, so that pressure can be concentrated in liquid outlet end, therefore can greatly reduce the pressure loss of liquid medium before entering extraction device, so that liquid medium can guarantee the extraction pressure of coffee powder after being squeezed into extraction device, to ensure the taste of coffee.

Description

Technical Field

[0001] Some embodiments of this utility model relate to a coffee machine, specifically designing a liquid tank, an infusion assembly, and a coffee machine. Background Technology

[0002] Portable coffee machines, as a type of portable device that can directly extract coffee powder or coffee capsules, are small in size and easy to carry, allowing users to enjoy freshly ground coffee anytime, anywhere.

[0003] Furthermore, current coffee machines typically require pre-setting the extraction pressure during the coffee extraction process. This allows the coffee machine to extract coffee powder at the preset pressure. However, the inventors discovered that the extraction pressure of the coffee machine is related to the pump pressure when the liquid medium is pumped out. Often, after the liquid medium is pumped out, the pump pressure is lost during the transportation process due to excessively long transportation distances or tortuous pipelines. This affects the extraction pressure when extracting coffee powder and ultimately impacts the final taste of the coffee. Utility Model Content

[0004] The purpose of this invention is to design a liquid tank, a liquid delivery component, and a coffee machine that can ensure the extraction pressure of coffee powder by the coffee machine, thereby ensuring the taste of the coffee.

[0005] To achieve the above objectives, some embodiments of the present invention provide a liquid tank having an inlet for introducing liquid medium pumped out from a pumping device and a bottom opposite to the inlet, the bottom of which is provided with an outlet end connected to the extraction device of a coffee machine.

[0006] The bottom of the tank is inclined so that the outlet end is close to the inlet end of the extraction device, and the liquid medium entering the tank flows towards the outlet end.

[0007] In addition, some embodiments of this utility model also provide an infusion assembly, which includes:

[0008] A housing for mounting and securing the extraction device; the housing is provided with a liquid tank as described above;

[0009] A cover plate is disposed opposite to the housing and covers the housing to seal the liquid tank;

[0010] The housing has at least a portion on one side relative to the cover plate forming the bottom of the liquid tank. The cover plate is provided with a mounting hole for the pump end of the coffee machine's pumping device to be inserted, allowing a portion of the pump end to enter the liquid tank.

[0011] In addition, some embodiments of this utility model also provide a coffee machine, including:

[0012] Liquid storage device for storing and heating liquid media;

[0013] A pumping device is installed at the bottom of the liquid storage device and is used to draw out the liquid medium stored in the liquid outlet device and pump out the drawn liquid medium.

[0014] An extraction device, which can be fitted with a powder cup or coffee capsule, is used to receive a liquid medium pumped out from the pumping device, and is also used to extract coffee powder in the powder cup or coffee capsule using the received liquid medium;

[0015] The infusion assembly described above is disposed between the pumping device and the extraction device, and is used to deliver the liquid medium pumped out by the pumping device into the extraction device.

[0016] Compared to the prior art, the embodiments of this utility model have the following advantages: The inlet of the liquid tank allows the liquid medium pumped out by the pumping device to enter, and the bottom of the liquid tank also has an outlet connected to the extraction device of the coffee machine. Therefore, when the liquid medium pumped out by the pumping device, it can enter the liquid tank through the inlet and quickly fill the entire tank. The liquid medium filled in the tank can then be continuously squeezed into the extraction device through the outlet under the pumping pressure of the pumping device. Furthermore, since the bottom of the liquid tank is inclined, the liquid medium can be guided to the outlet through the bottom, allowing the pressure to be concentrated at the outlet. This greatly reduces the pressure loss of the liquid medium before entering the extraction device, ensuring the extraction pressure of the liquid medium on the coffee powder after it enters the extraction device 3, thereby ensuring the taste of the coffee. Attached Figure Description

[0017] Figure 1 This is an isometric schematic diagram of the internal structure of the coffee machine in some embodiments of the present invention;

[0018] Figure 2 for Figure 1 A top-down view;

[0019] Figure 3 for Figure 2 Schematic diagram of the cross section at point AA;

[0020] Figure 4 This is an isometric view of the top of the housing in some embodiments of the present invention;

[0021] Figure 5 This is a schematic diagram of the structure of the shell and the cover plate in some embodiments of the present invention. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the various embodiments of this utility model will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been presented in the various embodiments of this utility model to enable the reader to better understand this application. However, the technical solutions claimed in this application can be implemented even without these technical details and with various changes and modifications based on the following embodiments.

[0023] Example 1

[0024] The first embodiment of this utility model relates to a liquid tank, such as... Figure 3 As shown, the liquid tank 11 has an opening 111 for introducing liquid medium pumped from the pumping device 2, and a bottom 112 opposite to the opening 111. Wherein, combined with Figure 1 As shown, the bottom 112 of the tank is equipped with a liquid outlet 113 that connects to the extraction device 3 of the coffee machine. Additionally, as... Figure 3 As shown, the bottom of the tank 112 is inclined, so that the liquid outlet 113 is close to the liquid inlet 31 of the extraction device 3, and the liquid medium entering the tank 11 can flow towards the liquid outlet 113.

[0025] As can be seen from the above, since the opening 111 of the liquid tank 11 can introduce the liquid medium pumped out by the pumping device 2, and the bottom 112 of the liquid tank 11 is also provided with an outlet 113 connected to the extraction device 3 of the coffee machine, when the liquid medium pumped out by the pumping device 2, it can enter the liquid tank 11 through the opening 111 and quickly fill the entire liquid tank 11. The liquid medium filled in the liquid tank 11 can then be continuously squeezed into the extraction device 3 through the outlet 113 under the pumping pressure of the pumping device 2. Furthermore, since the bottom 112 of the liquid tank 11 is inclined, the liquid medium can be guided to the outlet 113 through the bottom 112, so that the pressure can be concentrated at the outlet 113. Therefore, the pressure loss of the liquid medium before entering the extraction device 3 can be greatly reduced, so that the extraction pressure of the liquid medium on the coffee powder can be maintained after the liquid medium is squeezed into the extraction device 3, thereby ensuring the taste of the coffee.

[0026] Specifically, in some embodiments, such as Figure 3 and Figure 4 As shown, the outlet end 113 is an outlet hole provided on the bottom 112 of the tank, and this outlet hole is used for insertion of the inlet end 31 of the extraction device 3. For example, the inlet end 31 of the extraction device 3 is an inlet pipe, and the corresponding outlet hole of the inlet pipe has a T-shaped structure, and as shown... Figure 3As shown, the liquid outlet includes: a narrow section 1131 through which the liquid inlet pipe of the extraction device 3 can pass, and an enlarged section 1132 connected to the narrow section 1131. The enlarged section 1132 extends from the bottom of the tank 112 toward the direction away from the tank opening 111. The narrow section 1131 is connected to the enlarged section 1132 and continues to extend away from the tank opening 111. The narrow section 1131 is used to be inserted into the liquid inlet pipe, so that the liquid inlet pipe can directly reach the enlarged section 1132. The enlarged section 1132 is used to continuously flush in the liquid medium, and the liquid medium entering the enlarged section 1132 can be continuously squeezed into the extraction device 3 through the liquid inlet pipe, thereby realizing the extraction of coffee powder.

[0027] Furthermore, it is worth mentioning that in other embodiments, such as Figure 5 As shown, the side of the outlet hole relative to the groove 111 is the inlet side 1133, and the outlet hole gradually slopes or bends inward from the inlet side 1133 to the other side, forming a guide surface 1134 extending inward from the inlet side 1133. This guide surface 1134 can be a guide slope or a guide arc surface. The guide surface 1134 can further reduce the resistance of the liquid medium when entering the outlet hole, thereby further ensuring the extraction pressure of the coffee powder when the liquid medium enters the extraction device 3. Furthermore, it is worth noting that in some embodiments, when the guide surface 1134 formed by the outlet hole from the inlet side 1133 to the other side is a guide slope, the length and slope of the guide slope can be set according to the length and depth of the liquid groove 11. That is, the longer the length and the deeper the depth of the liquid groove 11, the greater the length and slope of the guide slope, and vice versa. Similarly, when the guide surface 1134 formed from the liquid inlet side 1133 to the other side of the liquid outlet is a guide arc surface, the length and curvature of the guide arc surface can also be set according to the length and depth of the liquid tank 11. That is, the longer the liquid tank 11 is and the deeper it is, the greater the length and curvature of the guide arc surface will be, and vice versa. Of course, in other embodiments, the length and slope of the guide slope, or the length and curvature of the guide arc surface can also be set in other ways, which will not be described in detail in this embodiment. However, as a preferred solution, the liquid outlet from the liquid inlet side 1133 to the other side can be entirely a guide surface, that is, the tank walls around the liquid tank 11 can all be guide slopes or arc surfaces, thereby further reducing the resistance of the liquid medium when entering the liquid outlet.

[0028] Additionally, it is worth mentioning that in some other embodiments, such as Figure 3As shown, the slot 111 is also used for the pumping end 21 of the pumping device 2 to be inserted, so that the pumping end 21 can partially enter the liquid tank 11, and the bottom 112 of the tank gradually extends from the orthographic projection of the pumping end 21 onto the outlet end 113, so that the liquid medium entering the liquid tank 11 has the shortest flow path to the outlet end, ensuring that the liquid medium can enter the outlet end 113 at the first time along the inclined direction of the bottom 112 after entering the liquid tank 11, thereby further reducing the pressure loss of the liquid medium when entering the outlet end 113, and further ensuring the extraction rate of coffee powder by the liquid medium in the extraction device 3.

[0029] Example 2

[0030] Embodiment 2 of this utility model relates to an infusion assembly, such as... Figure 3 As shown, the infusion assembly 1 includes: a housing 12 and a cover plate 13. Wherein, combined with... Figure 1 As shown, the housing 12 is used to install and fix the extraction device 3, and the housing 12 is provided with a liquid tank 11 as described in Embodiment 1. Secondly, as... Figure 3 As shown, the cover plate 13 and the housing 12 are arranged opposite to each other, and the cover plate 13 covers the housing 12. The cover plate 13 is used to close the liquid tank 11.

[0031] In addition, such as Figure 3 As shown, at least a portion of the side of the housing 12 relative to the cover plate 13 forms the bottom 112 of the liquid tank 11. Meanwhile, the cover plate 13 is provided with a mounting hole 131, which allows the pumping end 21 of the pumping device 2 of the coffee machine to be inserted, and allows a portion of the pumping end 21 to enter the liquid tank 11.

[0032] As can be seen from the above, since the liquid tank 11 is located between the housing 12 and the cover plate 13, and the side of the housing 12 opposite to the cover plate 13 is the bottom 112 of the liquid tank, the bottom 112 is provided with a liquid outlet 113, and the cover plate 13 is provided with a mounting hole 131 into which the pumping end 21 of the pumping device 2 can be inserted, the liquid medium can be pumped into the liquid tank 11 through the pumping end 21, so that the liquid medium can quickly fill the entire liquid tank 11. The liquid medium filled in the liquid tank 11 can then be continuously squeezed into the extraction device 3 through the liquid outlet 113 at the bottom 112 of the liquid tank 11 under the pumping pressure of the pumping device 2, thereby completing the extraction of coffee powder in the extraction device 3. Furthermore, since the bottom 112 of the liquid tank 11 is inclined, the liquid medium can be guided to the outlet 113 through the bottom 112, so that the pressure can be concentrated at the outlet 113. Therefore, the pressure loss of the liquid medium before entering the extraction device 3 can be greatly reduced, so that the liquid medium can maintain the extraction pressure of the coffee powder after entering the extraction device 3, thereby ensuring the taste of the coffee.

[0033] Specifically, in some embodiments, such as Figure 3 As shown, the housing 12 includes a base plate 121 and a side wall 122. The base plate 121 is disposed relative to the cover plate 13, and the side of the base plate 121 opposite to the cover plate 13 forms the bottom 112 of the liquid tank 11. The side wall 122 is disposed on the side of the base plate 121 away from the cover plate 13, and surrounds the base plate 121 circumferentially, forming a cavity 123 on the base plate 121, allowing the extraction device 3 of the coffee machine to be installed in this cavity 123. Finally, as... Figure 3 As shown, a liquid outlet 113 is provided on the bottom plate 121, and the liquid outlet 113 is used for the liquid inlet 31 of the extraction device 3 to be inserted. Furthermore, as can be seen from the above embodiment 1, since the liquid outlet 113 is a liquid outlet hole provided on the bottom of the tank 112, the liquid inlet 31 of the extraction device 3 is an inlet pipe inserted into the liquid outlet hole, so that the liquid medium entering the liquid outlet hole can be continuously squeezed into the extraction device 3 through the inlet pipe under the action of the pumping pressure of the pumping device 2, thereby realizing the extraction of coffee powder in the extraction device 3.

[0034] Furthermore, in order to form the liquid tank 11 between the bottom plate 121 and the cover plate 13 of the housing 12, in some embodiments, such as Figure 3 As shown, a portion of the base plate 121 protrudes towards the cover plate 13, forming an annular protrusion 124 that can surround the liquid tank 11. Simultaneously, the cover plate 13 covers the annular protrusion 124, allowing the cover plate 13 to seal the liquid tank 11. However, as a preferred embodiment, in some other embodiments, combined with... Figure 3 and Figure 4 As shown, the infusion assembly 1 further includes a sealing ring 14, which is disposed between the cover plate 13 and the annular protrusion 124, thereby forming a seal between the cover plate 13 and the annular protrusion 124. Furthermore, to facilitate the installation of the sealing ring 14 between the cover plate 13 and the annular protrusion 124, in some embodiments, such as... Figure 3 and Figure 5As shown, a lower annular groove 125 is provided on one side of the annular protrusion 124 relative to the cover plate 13, and an upper annular groove 132 is provided on one side of the cover plate 13 relative to the base plate 121, corresponding to the lower annular groove 125. Therefore, when installing the sealing ring 14, a portion of the sealing ring 14 can be embedded in the upper annular groove 132, while the remaining portion of the sealing ring 14 is embedded in the lower annular groove 125. It is evident that by providing the sealing ring 14 between the annular protrusion 124 of the base plate 121 and the cover plate 13, the sealing performance of the liquid tank 11 can be guaranteed, preventing leakage of the liquid medium in the liquid tank 11 due to excessive pumping pressure from the pumping device 2. Furthermore, as a preferred embodiment, in some embodiments, the sealing ring 14 can be a flexible sealing ring, for example, the sealing ring 14 can be made of materials such as rubber or silicone. Of course, in other embodiments, the sealing ring 14 can also be made of other materials, and in this embodiment, the material of the sealing ring 14 is not specifically limited. Furthermore, it should be noted that when the sealing ring 14 is inserted into the upper annular groove 132 and the lower annular groove 125 respectively, the sealing ring 14 can also be fitted with the upper annular groove 132 and the lower annular groove 125 respectively. Thus, when the sealing ring 14 is embedded in the upper annular groove 132 and the lower annular groove 125 respectively, the tightness of the fit between the sealing ring 14 and the annular protrusion 124 and the cover plate 13 can be guaranteed, thereby further improving the sealing performance of the liquid groove 11.

[0035] Furthermore, it is clear from the above that the seal between the cover plate 13 and the annular protrusion 124 is achieved by adding a sealing ring 14 to seal the liquid tank 11. The circumference of the liquid tank 11 is directly related to the sealing performance of the sealing ring 14. That is, the longer the circumference of the liquid tank 11, the greater the sealing circumference of the sealing ring 14. If an excessively long sealing ring 14 experiences aging or hardening at any point, it will affect the sealing performance of the sealing ring 14 on the liquid tank 11. Conversely, the shorter the circumference of the liquid tank 11, the shorter the sealing circumference of the sealing ring 14, resulting in better sealing performance. At the same time, to ensure a sufficient extraction rate of the coffee powder, such as... Figure 3 As shown, the inlet end 31 of the extraction device 3 is generally positioned at the axis of the coffee machine, so that when the liquid medium enters the extraction device 3 through the inlet end 113, the liquid medium can continuously spread from the axis of the coffee machine to the surrounding areas, thereby achieving uniform extraction of the coffee powder. Therefore, in order to ensure that the liquid tank 11 has a short transport path for the liquid medium, while also ensuring that the sealing ring 14 has a short sealing circumference for the liquid tank 11, the liquid tank 11 should transport the liquid medium entering it in a straight line to the outlet end 113 as much as possible. Therefore, in some embodiments, such as Figure 4As shown, the annular protrusion 124 constituting the liquid tank 11 can be a waist-shaped structure with an annular shape between the pump liquid end 21 and the liquid outlet end 113. At this time, the liquid tank 11 is a waist-shaped groove, so that the orthographic projection of the mounting hole 131 on the bottom 112 of the groove and the liquid outlet end 113 can be opposite each other along the length direction of the liquid tank 11. That is, the length direction of the waist-shaped groove is the flow direction of the liquid medium. This not only ensures that the liquid medium has a shorter delivery path and minimizes the loss of pump hydraulic pressure, but also allows the sealing ring 14 used to seal the liquid tank 11 to have a smaller circumference, thereby effectively improving the sealing performance of the sealing ring 14 on the liquid tank 11.

[0036] Example 3

[0037] Some embodiments of this utility model also provide a coffee machine, such as... Figure 1 and Figure 2 As shown, the coffee machine includes: a liquid storage device 4, a liquid pumping device 2, an extraction device 3, and a liquid delivery assembly 1 as described in Example 2.

[0038] Among them, such as Figure 1 As shown, the liquid storage device 4 is used to store and heat the liquid medium, while the pumping device 2 is located at the bottom of the liquid storage device 4. The pumping device 2 is used to extract the liquid medium stored in the liquid storage device 4 and pump it out. Secondly, as... Figure 1 As shown, the extraction device 3 can be fitted with a coffee powder cup or coffee capsule, and the extraction device 3 is used to receive the liquid medium pumped from the pumping device 2. The extraction device 3 is also used to extract the coffee powder in the coffee powder cup or coffee capsule using the received liquid medium. Finally, combined with Figure 1 and Figure 3 As shown, the infusion assembly 1 is disposed between the pumping device 2 and the extraction device 3, and the infusion assembly 1 is used to deliver the liquid medium pumped out by the pumping device 2 into the extraction device 3, so that the extraction device 3 can extract coffee powder.

[0039] Specifically, in some embodiments, such as Figure 1 As shown, the liquid storage device 4 includes a liquid storage tank 41 and a heating plate 42. The liquid storage tank 41 stores the liquid medium, while the heating plate 42 is disposed at the bottom of the liquid storage tank 41 and is used to heat the liquid storage tank 41, so that the liquid medium stored in the liquid storage tank 41 can be heated to a preset temperature, thereby meeting the extraction requirements of coffee powder. Furthermore, it is worth mentioning that, in order to enable the pumping device 2 to draw the liquid medium stored in the liquid storage device 4, in some other embodiments, such as... Figure 1As shown, the pumping device 2 can be a water pump, and the water pump and the storage tank 41 can be connected by a water pipe 5, so that after the water pump is turned on, it can continuously draw the liquid medium stored in the storage tank 41 through the water pipe 5, and pump the drawn liquid medium into the liquid tank 11 at a preset pressure.

[0040] Those skilled in the art will understand that the above embodiments are specific implementations of the present invention, and in practical applications, various changes can be made to them in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A liquid tank, characterized in that, The liquid tank (11) has an inlet (111) for introducing liquid medium pumped out from the pumping device (2) and a bottom (112) opposite to the inlet (111). The bottom (112) is provided with an outlet (113) connected to the extraction device (3) of the coffee machine. The bottom of the tank (112) is inclined, so that the liquid outlet (113) is close to the liquid inlet (31) of the extraction device (3), and the liquid medium entering the liquid tank (11) flows towards the liquid outlet (113).

2. The liquid tank according to claim 1, characterized in that, The liquid outlet (113) is a liquid outlet hole provided on the bottom (112) of the tank, which is used to be inserted into the liquid inlet (31) of the extraction device (3).

3. The liquid tank according to claim 2, characterized in that, The side of the outlet hole relative to the groove (111) is the inlet side (1133), and the outlet hole extends gradually inward or bends from the inlet side (1133) to the other side.

4. The liquid tank according to claim 3, characterized in that, The slot (111) is used to be inserted by the pumping end (21) of the pumping device (2), so that part of the pumping end (21) enters the liquid tank (11), and the orthographic projection of the pumping end (21) on the bottom (112) of the tank moves away from the liquid outlet (113) along a preset straight line direction. The bottom of the tank (112) extends from the orthographic projection of the pump end (21) onto the outlet end (113) and gradually slopes away from the opening (111).

5. An infusion assembly, characterized in that, The infusion assembly includes: A housing (12) for mounting and fixing the extraction device (3); the housing (12) is provided with a liquid tank (11) as described in any one of claims 1-4; A cover plate (13) is disposed opposite to the housing (12) and covers the housing (12) for sealing the liquid tank (11); The housing (12) has at least a portion on one side relative to the cover plate (13) forming the bottom (112) of the liquid tank (11). The cover plate (13) is provided with a mounting hole (131) for inserting the pump end (21) of the pumping device (2) of the coffee machine, and allowing a portion of the pump end (21) to enter the liquid tank (11).

6. The infusion assembly according to claim 5, characterized in that, The housing (12) includes: A base plate (121) is provided relative to the cover plate (13); one side of the base plate (121) relative to the cover plate (13) is the bottom (112) of the liquid tank (11); Sidewall (122), a sidewall (122) arranged around the base plate (121) in the circumferential direction; the sidewall (122) is arranged on the side of the base plate (121) away from the cover plate (13), and forms a cavity (123) on the base plate (121) for installing the extraction device (3) of a coffee machine; The base plate (121) is provided with the liquid outlet (113), and the liquid outlet (113) is used to be inserted into the liquid inlet (31) of the extraction device (3).

7. The infusion assembly according to claim 6, characterized in that, The bottom plate (121) has a portion protruding toward the cover plate (13) to form an annular protrusion (124) that can surround the liquid tank (11). The cover plate (13) covers the annular protrusion (124) to close the liquid tank (11).

8. The infusion assembly according to claim 7, characterized in that, The infusion assembly also includes: A sealing ring (14) is disposed between the cover plate (13) and the annular protrusion (124) to form a seal between the cover plate (13) and the annular protrusion (124).

9. The infusion assembly according to claim 8, characterized in that, The annular protrusion (124) has a lower annular groove (125) on one side of the cover plate (13), and the cover plate (13) has an upper annular groove (132) on one side of the bottom plate (121). The sealing ring (14) is partially embedded in the upper ring groove (132) and partially embedded in the lower ring groove (125).

10. A coffee machine, characterized in that, include: Liquid storage device (4) for storing and heating liquid medium; A pumping device (2) is installed at the bottom of the liquid storage device (4) for extracting the liquid medium stored in the liquid storage device (4) and pumping out the extracted liquid medium. The extraction device (3) can be fitted with a powder cup or coffee capsule and is used to receive the liquid medium pumped out from the pumping device (2) and to extract the coffee powder in the powder cup or coffee capsule with the received liquid medium. The infusion assembly as described in any one of claims 5-9 is disposed between the pumping device (2) and the extraction device (3) for delivering the liquid medium pumped out by the pumping device (2) into the extraction device (3).

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