Brewing pressure relief mechanism for a coffee maker

Abstract

The utility model relates to a kind of brewing pressure relief mechanism of coffee machine, including the brewing cup for brewing coffee, brewing cup is connected with pressure relief pipe, pressure relief pipe is equipped with the water vapor deceleration structure for making water vapor flow along spiral path, high-temperature high-pressure water vapor generated by brewing cup can reduce temperature and pressure under the action of water vapor deceleration structure and then discharge outward by pressure relief pipe, reduce the opportunity that water vapor splashes scald user due to impact, make product more safe.

Description

Technical Field

[0001] This utility model relates to the technical field of coffee machines, specifically to a brewing pressure relief mechanism for a coffee machine. Background Technology

[0002] Patent document CN222487077U discloses a monitored variable pressure coffee machine. Its description states that "the main support of the coffee machine has a square boss on the front side, with a circular opening at the center. Around the opening are four small bosses, each with a cylindrical screw post. These cylindrical screw posts correspond to the four screw holes of the brewing head assembly, and the brewing head assembly is then installed on them. A water collection box is located at the lower front side of the main support to collect wastewater after extraction and depressurization." Combined with the accompanying drawings, it can be seen that the high-temperature, high-pressure steam generated by the brewing head assembly during coffee brewing is discharged into the water collection box.

[0003] However, because the steam generated by the brewing head assembly has a high temperature and pressure, it will generate a large impact force when it enters the water receiving box. The steam will splash after hitting the water receiving box, which may scald the user and pose a certain safety hazard.

[0004] Therefore, further improvements are needed. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a brewing pressure relief mechanism for a coffee machine. By setting a water vapor deceleration structure, the water vapor can reduce the pressure and temperature in the pressure relief pipe before being discharged outward, reducing the chance of water vapor splashing and scalding users due to impact, and making the product safer.

[0006] The purpose of this utility model is achieved as follows: A brewing pressure relief mechanism for a coffee machine includes a brewing cup for brewing coffee, the brewing cup being connected to a pressure relief pipe, and the pressure relief pipe having a water vapor deceleration structure for causing water vapor to flow along a spiral path.

[0007] As a specific embodiment, the water vapor deceleration structure is a cooling and pressure reducing rod installed inside the pressure relief pipe. The cooling and pressure reducing rod is elongated and has spiral grooves distributed along its length on its outer side. A cooling and pressure reducing flow channel is formed between the spiral grooves and the inner wall of the pressure relief pipe.

[0008] As a specific embodiment, the cooling and pressure reducing rod is provided with a diversion rib at the first and / or last end, and the diversion rib is in the shape of a cross and protrudes outward along the length of the cooling and pressure reducing rod.

[0009] As a specific embodiment, the cooling and pressure-reducing rod is positioned on the side adjacent to the steam outlet end of the pressure relief pipe, and the inner side of the pressure relief pipe is tightly connected to the outer side of the cooling and pressure-reducing rod.

[0010] As a specific embodiment, the water vapor outlet end of the pressure relief pipe is provided with a water tray nozzle. One end of the water tray nozzle is tightly fitted with the inner wall of the pressure relief pipe and abuts against the cooling and pressure reducing rod. The other end of the water tray nozzle extends outward toward the water vapor outlet end of the pressure relief pipe. A water vapor outlet channel is provided inside the water tray nozzle. The inner side of the pressure relief pipe and the outer side of the water vapor outlet end are connected through the water vapor outlet channel.

[0011] As a specific embodiment, the width of the water vapor outlet channel decreases along the direction away from the cooling and pressure reducing rod.

[0012] As a specific embodiment, the brewing cup is provided with a control valve on its outer side. The control valve has a first connection part, a second connection part and a third connection part. The first connection part is connected to a hot water pipe. The second connection part is connected to the water inlet of the brewing cup with a water supply pipe. The third connection part is connected to a pressure relief pipe. The control valve is provided with a control module for selectively connecting the second connection part with either the first connection part or the third connection part.

[0013] As a specific embodiment, the brewing cup is provided with a coffee machine body on its outer side, and a pressure relief pipe extends into the inner side of the coffee machine body and extends vertically downward to the bottom of the brewing cup.

[0014] As a specific embodiment, the coffee machine body is provided with a water receiving tray below the brewing cup. The water receiving tray has a water receiving cavity. The water vapor outlet of the pressure relief pipe is connected to the water receiving cavity. The water receiving tray is detachable from the coffee machine body. The coffee machine body is provided with a brewing connector. The brewing cup is detachably connected to the brewing connector. The pressure relief pipe is connected to the brewing cup through the brewing connector.

[0015] The beneficial effects of this utility model are: The high-temperature, high-pressure steam generated by the brewing cup can be reduced in temperature and pressure by the steam deceleration structure before being discharged outward through the pressure relief pipe, reducing the chance of steam splashing and scalding users due to impact, making the product safer. Attached Figure Description

[0016] Figure 1 This is a cross-sectional schematic diagram of an embodiment of the present utility model.

[0017] Figure 2 This is a structural schematic diagram of an embodiment of the present utility model.

[0018] Figure 3 This is a schematic diagram of the cooling and pressure-reducing rod according to an embodiment of the present invention.

[0019] Figure 4 This is an enlarged view of embodiment A of the present invention. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] See Figures 1-4 The brewing pressure relief mechanism of this coffee machine includes a brewing cup 1 for brewing coffee, the brewing cup 1 is connected to a pressure relief pipe 2, and the pressure relief pipe 2 is provided with a water vapor deceleration structure for causing water vapor to flow along a spiral path.

[0022] Water vapor flows along a spiral path under the action of the water vapor deceleration structure. The water vapor deceleration structure acts as a buffer to slow down the water vapor, thereby reducing the flow velocity of the water vapor and thus reducing the water vapor pressure. At the same time, the flow path is relatively increased, thereby reducing the water vapor temperature.

[0023] The high-temperature, high-pressure steam generated by the brewing cup 1 can be reduced in temperature and pressure by the steam deceleration structure and then discharged outward through the pressure relief pipe 2, reducing the chance of steam splashing and scalding users due to impact, making the product safer.

[0024] Furthermore, the water vapor deceleration structure is a cooling and pressure reducing rod 3 set inside the pressure relief pipe 2. The cooling and pressure reducing rod 3 is long and narrow, and the outer side of the cooling and pressure reducing rod 3 is provided with spiral grooves 31 distributed along its length. The spiral grooves 31 and the inner wall of the pressure relief pipe 2 form a cooling and pressure reducing flow channel. During assembly, the pressure relief pipe 2 only needs to be sleeved on the outer side of the cooling and pressure reducing rod 3 to achieve the effect of decelerating and cooling water vapor. The overall structure is simple and easy to install.

[0025] Furthermore, the cooling and pressure reducing rod 3 is provided with a diversion rib 32 at the first and / or the last end. The diversion rib 32 is in the shape of a cross and protrudes outward along the length of the cooling and pressure reducing rod 3. The diversion rib 32 can play a preliminary diversion effect on water vapor, avoid excessive concentration of water vapor, and thus play a certain pressure reduction effect. At the same time, the diversion rib 32 can also further improve the overall structural strength of the cooling and pressure reducing rod 3.

[0026] Furthermore, the cooling and pressure reducing rod 3 is positioned on the side adjacent to the water vapor outlet end of the pressure relief pipe 2, which can prevent the water vapor, after its speed has decreased, from accelerating again in the pressure relief pipe 2, so that the water vapor leaves the pressure relief pipe 2 at basically the lowest speed.

[0027] The inner side of the pressure relief pipe 2 is tightly connected to the outer side of the cooling and pressure reducing rod 3. The cooling and pressure reducing rod 3 can also play a certain positioning role for the pressure relief pipe 2. Even if the material of the pressure relief pipe 2 is relatively soft, it can maintain a relatively stable position under the action of the cooling and pressure reducing rod 3 and is not prone to accidental swinging.

[0028] Furthermore, the steam outlet end of the pressure relief pipe 2 is equipped with a water tray nozzle 4. One end of the water tray nozzle 4 is tightly fitted to the inner wall of the pressure relief pipe 2 and abuts against the cooling and pressure reducing rod 3. The other end of the water tray nozzle 4 extends outward from the steam outlet end of the pressure relief pipe 2. The water tray nozzle 4 is equipped with a steam outlet channel 41. The inner side of the pressure relief pipe 2 and the outer side of the steam outlet end are connected through the steam outlet channel 41. The water tray nozzle 4 can more accurately guide the steam to be discharged outward.

[0029] Furthermore, the width of the water vapor outlet channel 41 decreases along the side away from the cooling and pressure reducing rod 3, so that the water vapor can flow out relatively concentratedly and is less likely to splash to different positions.

[0030] Furthermore, a control valve 5 is provided on the outside of the brewing cup 1. The control valve 5 has a first connecting part 51, a second connecting part 52 and a third connecting part 53. The first connecting part 51 is connected to a hot water pipe 511. A water supply pipe 521 is provided between the second connecting part 52 and the water inlet of the brewing cup 1. The third connecting part 53 is connected to the pressure relief pipe 2. The control valve 5 is provided with a control module for selectively connecting the second connecting part 52 with either the first connecting part 51 or the third connecting part 53, which simplifies the water inlet and pressure relief structure of the brewing cup 1.

[0031] When it is necessary to brew and extract coffee, the control module controls the first connection part 51 and the second connection part 52 to be connected, and the second connection part 52 and the third connection part 53 to be disconnected. At this time, the hot water pipe 511 can input hot water into the brewing cup 1 through the water supply pipe 521.

[0032] When pressure relief is required, the control module controls the first connection 51 to disconnect from the second connection 52, and the second connection 52 to connect with the third connection 53. At this time, water vapor can be discharged outward through the water supply pipe 521 and the pressure relief pipe 2 in sequence.

[0033] Furthermore, the coffee machine body 6 is located on the outside of the brewing cup 1, and the pressure relief pipe 2 extends into the inside of the coffee machine body 6 and extends vertically downward to the bottom of the brewing cup 1. This allows the pressure relief pipe 2 to be relatively hidden, which can improve safety and make the equipment more aesthetically pleasing.

[0034] Furthermore, the coffee machine body 6 is provided with a water tray 7 below the brewing cup 1. The water tray 7 has a water receiving cavity, and the steam outlet of the pressure relief pipe 2 is connected to the water receiving cavity. The water tray 7 is detachable from the coffee machine body 6, so that users can conveniently handle the water accumulated by the steam.

[0035] The coffee machine body 6 is equipped with a brewing connector 8. The brewing cup 1 is detachably connected to the brewing connector 8. The pressure relief pipe 2 is connected to the brewing cup 1 through the brewing connector 8, so that the brewing cup 1 can be easily removed and cleaned separately.

[0036] The above embodiments are merely preferred embodiments of this utility model, and other implementations are also possible. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model, and all such equivalent modifications or substitutions are included within the scope set forth in the claims of this application.

Claims

1. A brewing pressure relief mechanism for a coffee machine, comprising a brewing cup (1) for brewing coffee, wherein the brewing cup (1) is connected to a pressure relief pipe (2), characterized in that, The pressure relief pipe (2) is equipped with a water vapor deceleration structure for making water vapor flow along a spiral path.

2. The brewing pressure relief mechanism of the coffee machine according to claim 1, characterized in that: The water vapor deceleration structure is a cooling and pressure reducing rod (3) set inside the pressure relief pipe (2). The cooling and pressure reducing rod (3) is long and narrow. The outer side of the cooling and pressure reducing rod (3) is provided with spiral grooves (31) distributed along its length. The spiral grooves (31) and the inner wall of the pressure relief pipe (2) form a cooling and pressure reducing flow channel.

3. The brewing pressure relief mechanism of the coffee machine according to claim 2, characterized in that: The cooling and pressure reducing rod (3) is provided with a diversion rib (32) at the first and / or the last end. The diversion rib (32) is in the shape of a cross and protrudes outward along the length of the cooling and pressure reducing rod (3).

4. The brewing pressure relief mechanism of the coffee machine according to claim 2, characterized in that: The cooling and pressure reducing rod (3) is located on the side adjacent to the water vapor outlet end of the pressure relief pipe (2), and the inner side of the pressure relief pipe (2) is tightly connected to the outer side of the cooling and pressure reducing rod (3).

5. The brewing pressure relief mechanism of the coffee machine according to claim 4, characterized in that: The pressure relief pipe (2) has a water tray nozzle (4) at the steam outlet end. One end of the water tray nozzle (4) is tightly fitted to the inner wall of the pressure relief pipe (2) and abuts against the cooling and pressure reducing rod (3). The other end of the water tray nozzle (4) extends outward toward the steam outlet end of the pressure relief pipe (2). The water tray nozzle (4) has a steam outlet channel (41) inside. The inner side of the pressure relief pipe (2) and the outer side of the steam outlet end are connected through the steam outlet channel (41).

6. The brewing pressure relief mechanism of the coffee machine according to claim 5, characterized in that: The width of the steam outlet channel (41) decreases along the side away from the cooling and pressure reducing rod (3).

7. The brewing pressure relief mechanism of the coffee machine according to claim 1, characterized in that: The brewing cup (1) is provided with a control valve (5) on its outer side. The control valve (5) has a first connection part (51), a second connection part (52) and a third connection part (53). The first connection part (51) is connected to a hot water pipe (511). The second connection part (52) is connected to the water inlet of the brewing cup (1) and a water supply pipe (521) is provided. The third connection part (53) is connected to the pressure relief pipe (2). The control valve (5) is provided with a control module for selectively connecting the second connection part (52) with the first connection part (51) or the third connection part (53).

8. The brewing pressure relief mechanism of the coffee machine according to any one of claims 1-7, characterized in that: The brewing cup (1) is provided with a coffee machine body (6) on the outside, and the pressure relief pipe (2) extends into the inside of the coffee machine body (6) and extends vertically downward to the bottom of the brewing cup (1).

9. The brewing pressure relief mechanism of the coffee machine according to claim 8, characterized in that: The coffee machine body (6) is provided with a water receiving tray (7) below the brewing cup (1). The water receiving tray (7) has a water receiving cavity. The steam outlet of the pressure relief pipe (2) is connected to the water receiving cavity. The water receiving tray (7) is detachable from the coffee machine body (6). The coffee machine body (6) is provided with a brewing connector (8). The brewing cup (1) is detachably connected to the brewing connector (8). The pressure relief pipe (2) is connected to the brewing cup (1) through the brewing connector (8).

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