Coffee maker with pressure-stabilized water circuit

Abstract

The utility model discloses a coffee machine with steady voltage waterway, including base, be provided with water tank, water pump and extraction mechanism on the base, and the water pump one end communicates water tank, and the extraction mechanism includes first electromagnetic valve, heating device, three -way joint and brewing subassembly, and be provided with the first water inlet, first water outlet and second water outlet of intercommunication on three -way joint, and the water pump other end communicates the first inlet of first electromagnetic valve, and the water inlet end of heating device communicates the first export of first electromagnetic valve, and the water outlet end of heating device communicates the first water inlet, and first water outlet communicates brewing subassembly, its characterized in that still including steady voltage valve and water receiving box, and second water outlet communicates steady voltage valve one end, and steady voltage valve other end communicates water receiving box, this coffee machine, through setting steady voltage valve, when the pressure in extraction mechanism exceeds the constant pressure of steady voltage valve, and the redundant water in extraction structure will rush open steady voltage valve and finally flow to water receiving box, guarantee the stable work and normal service life of extraction structure.

Description

Technical Field

[0001] This utility model relates to the field of coffee machine technology, and in particular to a coffee machine with a pressure-stabilizing water circuit. Background Technology

[0002] The existing coffee machine can be found in Chinese Utility Model Patent CN217959686U, entitled "A Brewing Device and Coffee Machine," authorized on December 6, 2022. This patent discloses a brewing device and coffee machine, wherein the brewing device includes a filter head, a high-pressure funnel, a filter cup, and a sealing ring. The filter head is fixed to the coffee machine and has a channel connecting to its bottom surface. A filter sheet is provided on the bottom surface of the filter head to cover the channel. The high-pressure funnel is connected to the lower end of the filter head. The filter cup is located in the upper part of the inner cavity of the high-pressure funnel, and a pressure-boosting hole is provided at the lower end of the filter cup to connect to the inner cavity of the high-pressure funnel. The sealing ring is disposed between the filter cup and the filter head. The sealing ring includes an annular body with an outwardly radially extending rim at its upper end. The filter cup and the filter head cooperate to clamp the rim. The outer wall of the body abuts against the inner wall of the filter cup. The filter head has a flow channel connecting to the channel, which guides water flow to push the sealing ring to expand radially. The filter cup and filter head clamp the edge of the sealing ring to achieve an axial seal. Hot or cold water pushes the sealing ring to expand radially, achieving a radial seal.

[0003] However, the coffee machine with the above structure still has the following shortcomings: (1) When working, the water pump in the coffee machine draws water from the water tank into the heating boiler for heating. After heating, the hot water flows through the extraction and delivery water path to the high-pressure funnel of the brewing device for brewing and extraction. During this process, the water output of the water pump or boiler is likely to be greater than the coffee liquid output of the high-pressure funnel, which increases the water volume in the extraction and delivery water path and causes the water pressure in the extraction and delivery water path to be too high. The long-term high water pressure environment is likely to damage the components in the brewing device. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a coffee machine with an added pressure regulating valve to ensure stable pressure during coffee extraction.

[0005] The purpose of this utility model is achieved as follows: A coffee machine with a pressure-stabilized water circuit includes a base, on which a water tank, a water pump, and an extraction mechanism are mounted. One end of the water pump is connected to the water tank. The extraction mechanism includes a first solenoid valve, a heating device, a three-way connector, and a brewing assembly. The three-way connector has a first water inlet, a first water outlet, and a second water outlet that are connected to each other. The other end of the water pump is connected to the first inlet of the first solenoid valve. The water inlet of the heating device is connected to the first outlet of the first solenoid valve. The water outlet of the heating device is connected to the first water inlet. The first water outlet is connected to the brewing assembly. The coffee machine is characterized by further including a pressure-stabilizing valve and a water collection box. The second water outlet is connected to one end of the pressure-stabilizing valve, and the other end of the pressure-stabilizing valve is connected to the water collection box.

[0006] This coffee machine with a pressure-stabilizing water circuit uses a pressure-stabilizing valve installed before the brewing components. When the pressure inside the extraction mechanism exceeds the constant pressure of the pressure-stabilizing valve, the excess water inside the extraction mechanism will open the pressure-stabilizing valve and eventually flow to the water collection box. This reduces the pressure inside the extraction mechanism, prevents excessive pressure, ensures stable operation of the extraction mechanism, and extends the normal service life of each component of the extraction mechanism.

[0007] The objective of this utility model can also be achieved by the following technical measures: Specifically, it further includes a second solenoid valve. The second inlet of the second solenoid valve is connected to the water outlet of the heating device, the third outlet of the second solenoid valve is connected to the first inlet of the three-way connector, and the fourth outlet of the second solenoid valve is connected to the water collection box. After the coffee is made, only the second inlet and the fourth outlet of the second solenoid valve need to be connected so that the residual water in the extraction mechanism can quickly pass through the second solenoid valve and finally flow to the water collection box, thereby realizing the rapid depressurization of the extraction mechanism. The implementation effect is good.

[0008] Specifically, it further includes a steam valve and a multi-port connector. The multi-port connector is provided with a first connecting port, a second connecting port, and a third connecting port. The first connecting port is connected to the water outlet of the heating device, the third connecting port is connected to one end of the steam valve, the other end of the steam valve is connected to a steam pipe, and the second connecting port is connected to the second inlet of the second solenoid valve. The multi-port connector can connect the hot water flowing from the heating device to the brewing component and the steam flowing from the heating device to the steam valve, which has a good implementation effect.

[0009] Specifically, the water receiving box is fixed to the front side wall of the base, and a water receiving cavity is provided inside the water receiving box. The other end of the pressure stabilizing valve is connected to the water receiving cavity. The water receiving box contains excess water discharged by the pressure stabilizing valve through the water receiving cavity.

[0010] Specifically, the water tank is fixed to the rear end of the base, the water pump is close to the extraction mechanism, and the water pump and extraction mechanism are located between the water tank and the water receiving box; so that the water receiving box, water pump and extraction mechanism, and water tank are located in the front, middle and rear positions of the base, respectively. This arrangement is conducive to the compact overall structure of the coffee machine.

[0011] Furthermore, a mounting bracket is fixed on the base, and the water pump is fixed on the mounting bracket; so that the water pump can be stably mounted on the base through the mounting bracket.

[0012] Specifically, the upper opening of the water receiving cavity is connected to a cover for holding a coffee cup. The cover has several perforations, and the brewing component is located above the cover. This allows the cover of the water receiving box to also serve as a coffee cup holder, while the water receiving cavity can also accommodate liquid that leaks or spills from the coffee cup and / or the brewing component, resulting in a better implementation effect.

[0013] Specifically, it also includes a control circuit board, which is electrically connected to the water pump, heating device, first solenoid valve and second solenoid valve respectively, so that users can directly control the operation of each component through the control circuit board, making it more convenient to operate.

[0014] Specifically, the pressure stabilizing valve is a mechanical constant pressure valve; it is readily available and has a good constant pressure effect. Furthermore, by replacing mechanical constant pressure valves of different specifications, the switching of different constant pressures during the operation of the extraction mechanism can be achieved.

[0015] The beneficial effects of this utility model are as follows: (1) This coffee machine with a pressure-stabilizing water circuit has a pressure-stabilizing valve installed before the brewing component. When the pressure in the extraction mechanism exceeds the constant pressure of the pressure-stabilizing valve, the excess water in the extraction mechanism will open the pressure-stabilizing valve and eventually flow to the water collection box, so that the pressure in the extraction mechanism drops, avoids excessive pressure, and ensures the stable operation of the extraction mechanism and the normal service life of each component of the extraction mechanism.

[0016] (2) After the coffee is made, simply connect the second inlet and the fourth outlet of the second solenoid valve so that the residual water in the extraction mechanism can quickly pass through the second solenoid valve and eventually flow to the water collection box, thereby achieving rapid depressurization of the extraction mechanism. The implementation effect is good.

[0017] (3) The multi-port connector can connect the hot water flowing from the heating device to the brewing component, and can also connect the steam flowing from the heating device to the steam valve, which has a better implementation effect. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the coffee machine with a pressure-stabilizing water circuit according to the present invention.

[0019] Figure 2 This is a schematic diagram of the water circuit of the coffee machine with a pressure-stabilizing water circuit according to this utility model.

[0020] Figure 3 This is a schematic diagram showing the connection between the water pump and the extraction mechanism of this utility model.

[0021] Figure 4 This is the electrical schematic diagram of the coffee machine with a pressure-stabilizing water circuit according to this utility model. Detailed Implementation

[0022] The present patent will be further described below with reference to the accompanying drawings and embodiments: The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures, and should not be construed as limiting the present patent; In order to better illustrate the embodiments of the present patent, some parts in the drawings may be omitted, enlarged or reduced, and do not represent the actual product size; It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0023] The terms "first," "second," etc., used in this patent do not indicate any order, quantity, or importance, but are merely for distinction. The terms "one," "a kind," etc., used in this patent do not indicate a limitation on quantity, but rather indicate the presence of at least one of the mentioned objects. The terms indicating direction or location used in this patent, such as "top," "bottom," "side," "longitudinal," "lateral," "middle," "center," "outer," "inner," "horizontal," "vertical," "left," "right," "above," "below," etc., reflect relative positions, not absolute positions; those skilled in the art can understand the specific meaning of these terms according to the specific circumstances.

[0024] Implementation examples, in conjunction with Figures 1 to 4 As shown, a multi-functional coffee machine with a pressure-stabilized water circuit includes a base 1, on which a water tank 2, a water pump 3 and an extraction mechanism are provided, and one end of the water pump 3 is connected to the water tank 2. The extraction mechanism includes a first solenoid valve 4, a heating device 5, a three-way connector 6, and a brewing assembly 7. The three-way connector 6 is provided with a first water inlet 61, a first water outlet 62, and a second water outlet 63 that are connected to each other. The other end of the water pump 3 is connected to the first inlet 41 of the first solenoid valve 4. The water inlet 51 of the heating device 5 is connected to the first outlet 42 of the first solenoid valve 4. The first water outlet 62 is connected to the brewing assembly 7. The mechanism is characterized by further including a pressure stabilizing valve 8 and a water receiving box 9. The water outlet 52 of the heating device 5 and the second outlet 43 of the first solenoid valve 4 are respectively connected to the first water inlet 61. When the first inlet 41 of the first solenoid valve 4 is connected to the first outlet 42, the first inlet 41 of the first solenoid valve 4 and the second outlet 43 are in a closed state. The second water outlet 63 is connected to one end of the pressure stabilizing valve 8, and the other end of the pressure stabilizing valve 8 is connected to the water receiving box 9.

[0025] As a specific solution, it also includes a second solenoid valve 10, the water outlet 52 of the heating device 5 and the second outlet 43 of the first solenoid valve 4 are respectively connected to the second inlet 101 of the second solenoid valve 10, the third outlet 102 of the second solenoid valve 10 is connected to the first water inlet 61, and the fourth outlet 103 of the second solenoid valve 10 is connected to the water receiving box 9.

[0026] In this embodiment, a steam valve 20 and a multi-port connector 30 are also included. The multi-port connector 30 is provided with a first connecting port 301, a second connecting port 302, a third connecting port 303 and a fourth connecting port 304 that are connected to each other. The first connecting port 301 is connected to the water outlet 52 of the heating device 5. The fourth connecting port 304 is connected to the second outlet 43 of the first solenoid valve 4. The third connecting port 303 is connected to one end of the steam valve 20. The other end of the steam valve 20 is connected to a steam pipe 201. The second connecting port 302 is connected to the second inlet 101 of the second solenoid valve 10.

[0027] As a more specific embodiment, the water receiving box 9 is fixed to the front side wall of the base 1, and a water receiving cavity 91 is provided inside the water receiving box 9. The other end of the pressure stabilizing valve 8 is connected to the water receiving cavity 91. More specifically, the other end of the pressure stabilizing valve 8 can be connected to the water receiving cavity 91 through a water pipe 81.

[0028] In this embodiment, the water tank 2 is fixed on the rear end of the base 1, the water pump 3 is close to the extraction mechanism, and the water pump 3 and the extraction mechanism are located between the water tank 2 and the water receiving box 9.

[0029] In this embodiment, a mounting bracket 11 is also fixed on the base 1, and the water pump 3 is fixed on the mounting bracket 11.

[0030] As a preferred embodiment, the upper opening of the water receiving cavity 91 is connected to an upper cover 92 for holding a coffee cup. The upper cover 92 has several hollow openings 921, and the brewing component 7 is located above the upper cover 92.

[0031] As a more specific solution, it also includes a control circuit board 40, which is electrically connected to the water pump 3, the heating device 5, the first solenoid valve 4, and the second solenoid valve 10.

[0032] As a preferred embodiment, the pressure regulating valve 8 is a mechanical constant pressure valve; the heating device 5 can be a common heating boiler.

[0033] Working principle: When making hot coffee, the first inlet 41 and the first outlet 42 of the first solenoid valve 4 are connected, and the water pump 3 pumps water from the water tank 2 to the heating device 5 for heating. The second inlet 101 and the third outlet 102 of the second solenoid valve 10 are connected, and the heated hot water enters the brewing assembly 7 through the second solenoid valve 10 and the three-way connector 6 for brewing and extraction. When making cold coffee, the first inlet 41 and the second outlet 43 of the first solenoid valve 4 are connected, and the water pump 3 pumps water from the water tank 2, bypassing the heating device 5, and directly enters the brewing assembly 7 through the second solenoid valve 10 and the three-way connector 6 for brewing and extraction.

[0034] During the process of making hot and cold coffee, if the water pressure in the extraction mechanism is too high, the excess water in the extraction mechanism will automatically open the pressure regulating valve 8 and eventually flow to the water collection box 9, thereby reducing the pressure and ensuring the stable operation of the extraction structure and the normal service life of each component of the extraction structure.

[0035] After hot or cold coffee is made, simply connect the second inlet 101 and the fourth outlet 103 of the second solenoid valve 10 so that the residual water in the extraction mechanism can quickly pass through the second solenoid valve 10 and eventually flow to the water collection box 9, thereby achieving rapid depressurization of the extraction mechanism.

[0036] The embodiments described above are merely examples for clearly illustrating this patent, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this patent, and these all fall within the scope of protection of this patent. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A coffee machine with a pressure-stabilized water circuit, comprising a base (1), wherein a water tank (2), a water pump (3) and an extraction mechanism are provided on the base (1), and one end of the water pump (3) is connected to the water tank (2). The extraction mechanism includes a first solenoid valve (4), a heating device (5), a three-way connector (6), and a brewing assembly (7). The three-way connector (6) is provided with a first water inlet (61), a first water outlet (62), and a second water outlet (63) that are connected together. The other end of the water pump (3) is connected to the first inlet (41) of the first solenoid valve (4). The water inlet (51) of the heating device (5) is connected to the first outlet (42) of the first solenoid valve (4). The water outlet (52) of the heating device (5) is connected to the first water inlet (61). The first water outlet (62) is connected to the brewing assembly (7). Its characteristic is that... It also includes a pressure stabilizing valve (8) and a water receiving box (9). The second water outlet (63) is connected to one end of the pressure stabilizing valve (8), and the other end of the pressure stabilizing valve (8) is connected to the water receiving box (9).

2. The coffee machine with a pressure-stabilizing water circuit according to claim 1, characterized in that, It also includes a second solenoid valve (10), the second inlet (101) of the second solenoid valve (10) is connected to the outlet (52) of the heating device (5), the third outlet (102) of the second solenoid valve (10) is connected to the first inlet (61) of the three-way connector (6), and the fourth outlet (103) of the second solenoid valve (10) is connected to the water receiving box (9).

3. The coffee machine with a pressure-stabilizing water circuit according to claim 2, characterized in that, It also includes a steam valve (20) and a multi-port connector (30). The multi-port connector (30) is provided with a first connecting port (301), a second connecting port (302) and a third connecting port (303). The first connecting port (301) is connected to the water outlet (52) of the heating device (5). The third connecting port (303) is connected to one end of the steam valve (20). The other end of the steam valve (20) is connected to a steam pipe (201). The second connecting port (302) is connected to the second inlet (101) of the second solenoid valve (10).

4. The coffee machine with a pressure-stabilizing water circuit according to claim 1, characterized in that, The water receiving box (9) is fixed to the front side wall of the base (1). A water receiving cavity (91) is provided inside the water receiving box (9). The other end of the pressure stabilizing valve (8) is connected to the water receiving cavity (91).

5. The coffee machine with a pressure-stabilizing water circuit according to claim 4, characterized in that, The water tank (2) is fixed on the rear end of the base (1), the water pump (3) is close to the extraction mechanism, and the water pump (3) and the extraction mechanism are located between the water tank (2) and the water receiving box (9).

6. The coffee machine with a pressure-stabilizing water circuit according to claim 5, characterized in that, The base (1) is also fixed with a mounting bracket (11), and the water pump (3) is fixed on the mounting bracket (11).

7. The coffee machine with a pressure-stabilizing water circuit according to claim 4, characterized in that, The upper opening of the water receiving cavity (91) is connected to a lid (92) for holding a coffee cup. The lid (92) has several hollow openings (921), and the brewing component (7) is located above the lid (92).

8. The coffee machine with a pressure-stabilizing water circuit according to claim 1, characterized in that, It also includes a control circuit board (40), which is electrically connected to the water pump (3), the heating device (5), the first solenoid valve (4), and the second solenoid valve (10).

9. The coffee machine with a pressure-stabilizing water circuit according to claim 1, characterized in that, The pressure regulating valve (8) is a mechanical constant pressure valve.

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