Pressure regulator and coffee machine

Abstract

This utility model relates to a pressure regulating device, which includes: a valve body with a first channel, a second channel, and a third channel on its outer side; the first channel and the second channel are connected; the second channel is connected to the third channel through a first flow path; a cap body fixed to the outer side of the valve body, positioned corresponding to the opening of the second channel; and a pressure regulating needle, with its first end slidably disposed within the second channel and its second end passing through and protruding from the cap body, and the second end being threadedly connected to the cap body. By rotating the pressure regulating needle, the first end of the needle can move between a position where the first flow path is closed and a position where the first flow path is at least partially open. When the first end of the needle slides to the position where the first flow path is at least partially open, the second channel and the third channel are connected. By changing the area of ​​the first flow path opened by the pressure regulating needle, the high-temperature water extraction pressure of the coffee machine can be adjusted, thus meeting consumers' needs for coffee liquids with different flavor profiles.

Description

Technical Field

[0001] This utility model relates to the field of coffee machine technology, and in particular to a pressure regulating device and a coffee machine. Background Technology

[0002] A pressure espresso machine extracts coffee by using high-pressure hot water to penetrate the coffee grounds, dissolving the oils, acids, and aromatic compounds. Different pressures produce coffees with different flavor profiles to meet consumer preferences.

[0003] A pressure coffee machine typically consists of a machine body and a water tank located inside the machine body. Water is drawn from the water tank by a water pump, but the water pump can only provide a fixed pressure and cannot adjust the extraction pressure according to the consumer's taste preferences.

[0004] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model discloses a pressure regulating device and a coffee machine, which solves the problem that coffee machines cannot adjust extraction pressure and thus cannot meet consumers' needs for coffee liquids with different flavors.

[0006] The technical solution adopted in this utility model is as follows: A pressure regulating device includes: a valve body with a first channel, a second channel, and a third channel on its outer side, the first channel communicating with the second channel, and the second channel communicating with the third channel through a first flow path; a cap fixed to the outer side of the valve body, positioned corresponding to the opening of the second channel; and a pressure regulating needle with a first end slidably disposed within the second channel, and a second end passing through and protruding from the cap, and the second end being threadedly connected to the cap; wherein, by rotating the pressure regulating needle, the first end of the pressure regulating needle can move between a position where the first flow path is closed and a position where the first flow path is at least partially open.

[0007] A further technical solution is that a threaded hole is opened at the second end of the cap body; the pressure adjusting needle includes a limiting part and a connecting part connected to the second end of the limiting part, the outer diameter of the limiting part is larger than the outer diameter of the connecting part, the limiting part slides in the second channel, and the connecting part is threadedly connected to the threaded hole.

[0008] A further technical solution is that the second channel and the third channel are coaxially arranged, and the first channel is perpendicular to the second channel; the first end of the limiting part is provided with a needle part, and the outer diameter of the second end of the needle part is matched with the first flow channel, and the outer diameter of the first end of the needle part is smaller than the outer diameter of the second end of the needle part.

[0009] A further technical solution is that the first channel and the second channel are connected through a second flow channel, and there is a gap between the side of the limiting part and the second flow channel so that the second flow channel is always in a fully open state.

[0010] A further technical solution is that an annular groove is formed on the outer side of the limiting part, and a silicone ring is fitted inside the annular groove, with the silicone ring in sealed contact with the inner wall of the second channel.

[0011] A further technical solution is that the second end of the connecting part is connected to the operating part.

[0012] A further technical solution is that the first channel is connected to the inlet pipe, the third channel is connected to the outlet pipe, and the inlet pipe and the outlet pipe are rigid pipes.

[0013] This utility model also discloses a coffee machine, which includes: a body; an operation panel disposed at the front end of the body; and a pressure regulating device as described above, installed on the operation panel and located within the body.

[0014] The beneficial effects of this utility model embodiment are as follows: (I) The pressure regulating device of this utility model, by rotating the pressure regulating needle, causes the second end of the pressure regulating needle to undergo threaded displacement with the cap body, causing the first end of the pressure regulating needle to slide along the second channel. When the first end of the pressure regulating needle slides to the position of closing the first flow channel, the second channel and the third channel are not connected, that is, the coffee machine shuts off water flow. When the first end of the pressure regulating needle slides to the position of at least partially opening the first flow channel, the second channel and the third channel are connected. By changing the area of ​​the pressure regulating needle opening the first flow channel, the high-temperature water extraction pressure of the coffee machine can be adjusted, which can meet the needs of consumers for different flavors of coffee liquid.

[0015] (ii) Furthermore, the pressure regulating device is installed inside the coffee machine and is connected to a fixed rigid water inlet pipe and water outlet pipe through the first channel and the third channel respectively, so that the pressure regulating device is stable in position inside the coffee machine. The pressure regulating device has a simple structure and is easy to install. Attached Figure Description

[0016] Figure 1 This is an isometric view of the pressure regulating device of this utility model.

[0017] Figure 2 This is a schematic diagram of the internal structure of the pressure regulating device of this utility model when it is in the closed state.

[0018] Figure 3 This is a schematic diagram of the internal structure of the pressure regulating device of this utility model when it is in the open state.

[0019] Figure 4 This is a cross-sectional view of the pressure regulating device and the control panel in the coffee machine of this utility model.

[0020] Figure 5 This is a front view structural diagram of the coffee machine of this utility model.

[0021] In the picture: 1. Valve body; 11. First channel; 12. Second channel; 13. Third channel; 14. First flow channel; 15. Second flow channel; 2. Cap body; 21. Threaded hole; 3. Pressure regulating needle; 31. Needle part; 32. Limiting part; 321. Annular groove; 33. Connecting part; 4. Silicone ring; 5. Operating part; 6. Water inlet pipe; 7. Water outlet pipe; 8. Operating panel; 9. Machine body. Detailed Implementation

[0022] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0023] First embodiment: This embodiment discloses a pressure regulating device.

[0024] Figure 1 This is an isometric view of the pressure regulating device of this utility model. Figure 1 As shown, the pressure regulating device includes a valve body 1, a cap body 2, and a pressure regulating needle 3.

[0025] Figure 2 This is a schematic diagram of the internal structure of the pressure regulating device of this utility model when it is in the closed state. Figure 3 This is a schematic diagram of the internal structure of the pressure regulating device of this utility model when it is in the open state. Figure 2 and Figure 3 As shown, a first channel 11, a second channel 12, and a third channel 13 are provided on the outer side of the valve body 1. The first channel 11 is connected to the second channel 12, and the second channel 12 is connected to the third channel 13 through a first flow channel 14. For example, the inner diameter of the first flow channel 14 is smaller than the inner diameters of the second channel 12 and the third channel 13.

[0026] The cap 2 is fixed to the outside of the valve body 1, corresponding to the opening of the second channel 12. The first end of the pressure regulating needle 3 is slidably disposed within the second channel 12, and the second end passes through and protrudes from the cap 2, and is threadedly connected to the cap 2. Figure 2 and Figure 3 As shown, exemplarily, the first end is the end of the pressure regulating needle 3 near the second channel 12, and the second end is the end of the pressure regulating needle 3 away from the second channel 12. A threaded hole 21 is formed at the second end of the cap body 2. The pressure regulating needle 3 includes a limiting part 32 and a connecting part 33 connected to the second end of the limiting part 32. The outer diameter of the limiting part 32 is larger than the outer diameter of the connecting part 33. The limiting part 32 slides within the second channel 12 to prevent it from dislodging from the second channel 12 during use. The connecting part 33 is threadedly connected to the threaded hole 21. The cap body 2 is threadedly connected to the outer side of the valve body 1, facilitating the installation and removal of the cap body 2 and the pressure regulating needle 3.

[0027] The pressure regulating needle 3 is rotated, and the first end of the pressure regulating needle 3 can move between a position where the first flow channel 14 is closed and a position where the first flow channel 14 is at least partially open.

[0028] like Figure 2 and Figure 3 As shown, the second channel 12 and the third channel 13 are coaxially arranged, and the first channel 11 is perpendicular to the second channel 12. The first end of the pressure regulating needle 3 is provided with a needle portion 31, and the outer diameter of the second end of the needle portion 31 matches the outer diameter of the first end of the first flow channel 14. The outer diameter of the first end of the needle portion 31 is smaller than the outer diameter of the second end of the needle portion 31. When the pressure regulating needle 3 is rotated, the connecting portion 33 and the cap 2 generate threaded displacement, causing the limiting portion 32 and the needle portion 31 to slide along the second channel 12. When the limiting portion 32 is at the bottom of the second channel 12, the second end of the needle portion 31 completely covers the first flow channel 14, and at this time, the second channel 12 and the third channel 13 are not connected. When the limiting portion 32 slides away from the second channel 12, because the outer diameter of the portion of the needle portion 31 located inside the first flow channel 14 gradually decreases, the first flow channel 14 opens and the flowable area changes, thereby achieving the effect of adjusting the extraction pressure. Preferably, the lower end of the limiting part 32 is a plane. When the limiting part 32 is at the bottom of the second channel 12, it fits against the bottom of the second channel 12 and covers the first flow channel 14, further improving the sealing effect when the pressure regulating device is closed.

[0029] Of course, in other embodiments of this utility model, the first channel 11 and the second channel 12 can be coaxially arranged, and the third channel 13 can be perpendicular to the second channel 12. In this case, when the pressure adjusting needle 3 is rotated, the connecting part 33 and the cap body 2 will generate thread displacement, which will drive the limiting part 32 to slide along the second channel 12, and the outer surface of the first end of the pressure adjusting needle 3 can close and at least partially open the first flow channel 14.

[0030] like Figure 2 and Figure 3As shown, the first channel 11 and the second channel 12 are connected through the second flow channel 15. There is a gap between the side of the limiting part 32 and the second flow channel 15 so that the second flow channel 15 is always in a fully open state, so as to avoid pressure changes at the second flow channel 15 when the pressure regulating needle 3 moves, and to ensure the pressure regulation of the pressure regulating device is stable.

[0031] like Figure 2 and Figure 3 As shown, further, an annular groove 321 is opened on the outer side of the limiting part 32, and a silicone ring 4 is sleeved in the annular groove 321. The silicone ring 4 is in sealing contact with the inner wall of the second channel 12, thereby improving the sealing between the pressure regulating needle 3 and the second channel 12.

[0032] Figure 4 This is a cross-sectional view of the pressure regulating device and control panel in the coffee machine of this utility model. Figure 4 As shown, the second end of the connecting part 33 is further connected to the operating part 5. For example, the operating part 5 is a knob. The connecting part 33 and the operating part 5 can be integrally formed or splined connected, as long as the pressure adjusting needle 3 can be rotated by rotating the operating part 5.

[0033] like Figures 1-3 As shown, the first channel 11 is connected to the water inlet pipe 6, and the third channel 13 is connected to the water outlet pipe 7. The water inlet pipe 6 and the water outlet pipe 7 are rigid pipes and are fixed inside the coffee machine, thereby fixing the position of the valve body 1 and preventing the valve body 1 from rotating with the pressure regulating needle 3.

[0034] In this embodiment, by rotating the pressure adjusting needle 3, the second end of the pressure adjusting needle 3 and the cap body 2 are displaced by a thread, causing the first end of the pressure adjusting needle 3 to slide along the second channel 12, as shown below. Figure 2 As shown, when the first end of the pressure regulating needle 3 slides to the position of closing the first flow channel 14, the second channel 12 and the third channel 13 are not connected, that is, the coffee machine shuts off the water flow. Figure 3 As shown, when the first end of the pressure regulating needle 3 slides to a position where the first flow channel 14 is at least partially opened, the second channel 12 and the third channel 13 are connected. By changing the area of ​​the first flow channel 14 opened by the pressure regulating needle 3, the high-temperature water extraction pressure of the coffee machine can be adjusted, which can meet the needs of consumers for coffee liquid with different tastes.

[0035] Second embodiment: This embodiment discloses a coffee machine.

[0036] Figure 5 This is a front view structural diagram of the coffee machine of this utility model. Figure 4 and Figure 5As shown, the coffee machine includes a body 9, an operation panel 8, and a pressure regulating device. The operation panel 8 is located at the front end of the body 9. As in the first embodiment, the pressure regulating device is mounted on the operation panel 8 and located inside the body 9. The operation part 5 passes through and protrudes from the outside of the operation panel 8, and the water inlet pipe 6 and the water outlet pipe 7 are fixed inside the body 9.

[0037] In this embodiment, the pressure regulating device is installed inside the coffee machine. It is connected to a fixed rigid water inlet pipe 6 and water outlet pipe 7 through the first channel 11 and the third channel 13, respectively, so that the pressure regulating device is stable in the coffee machine. The pressure regulating device has a simple structure and is easy to install.

[0038] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. Pressure regulating device, characterized in that The pressure regulating device includes: The valve body has a first channel, a second channel, and a third channel on its outer side. The first channel is connected to the second channel, and the second channel is connected to the third channel through a first flow channel. The cap is fixed to the outside of the valve body, and its position corresponds to the opening of the second channel. The pressure regulating needle has a first end that is slidably disposed in the second channel, and a second end that passes through and protrudes from the cap body, and the second end is threadedly connected to the cap body; The pressure regulating needle is rotated, and the first end of the pressure regulating needle can move between a position that closes the first flow channel and a position that at least partially opens the first flow channel.

2. The pressure regulating device according to claim 1, characterized in that: The cap body has a threaded hole at its second end; the pressure adjusting needle includes a limiting part and a connecting part connected to the second end of the limiting part, the outer diameter of the limiting part is larger than the outer diameter of the connecting part, the limiting part slides in the second channel, and the connecting part is threadedly connected to the threaded hole.

3. The pressure regulating device according to claim 2, characterized in that: The second channel and the third channel are coaxially arranged, and the first channel is perpendicular to the second channel; the first end of the limiting part is provided with a needle part, and the outer diameter of the second end of the needle part is matched with the first flow channel, and the outer diameter of the first end of the needle part is smaller than the outer diameter of the second end of the needle part.

4. The pressure regulating device according to claim 3, characterized in that: The first channel and the second channel are connected through a second flow channel, and there is a gap between the side of the limiting part and the second flow channel so that the second flow channel is always in a fully open state.

5. The pressure regulating device according to claim 2, characterized in that: An annular groove is formed on the outer side of the limiting part, and a silicone ring is fitted inside the annular groove, with the silicone ring in sealed contact with the inner wall of the second channel.

6. The pressure regulating device according to claim 2, characterized in that: The second end of the connecting part is connected to the operating part.

7. The pressure regulating device according to claim 1, characterized in that: The first channel is connected to the inlet pipe, and the third channel is connected to the outlet pipe. The inlet pipe and the outlet pipe are rigid pipes.

8. A coffee machine, characterized in that, The coffee machine includes: Organism; The control panel is located at the front of the machine body; The pressure regulating device as described in any one of claims 1 to 7 is installed on the operation panel and located within the machine body.

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