Pressure limiting coffee bin and coffee machine

Abstract

The utility model discloses a pressure limiting coffee bin and a coffee machine, the coffee bin is provided with a pressure limiting mechanism, the pressure limiting mechanism comprises a plug and a spring, the plug movably abuts against a first through hole, the pressure of the coffee bin tends to be stable, and therefore it is guaranteed that the quality of coffee is more stable.

Description

TECHNICAL FIELD

[0001] The utility model relates to pressure coffee machine technical field, especially a kind of pressure-limiting coffee bin and coffee machine. BACKGROUND

[0002] The coffee extraction pressure in the coffee bin of the pressure coffee pot on the market is unstable, mostly rely on pressure pump to give extraction pressure, pressure pump can reach 15Bar above pressure, under different pressure, the taste of coffee extracted is not same, and extraction pressure is affected by different factors, such as the fineness of coffee bin filter screen, the fineness of coffee powder, coffee powder density in coffee bin, leading to unstable extraction pressure, and unstable coffee quality. SUMMARY

[0003] The utility model discloses a kind of pressure-limiting coffee bin and coffee machine, coffee bin is equipped with pressure-limiting mechanism, promote the pressure of coffee bin tends to stable, to ensure that the quality of coffee is more stable.

[0004] To achieve this purpose, the utility model adopts the following technical scheme:

[0005] A pressure-limiting coffee bin, including bin body and pressure-limiting mechanism;

[0006] The bin body is used to place coffee powder, and the bottom of the bin body is provided with a first through hole;

[0007] The pressure-limiting mechanism includes a plug, which can move and contact the first through hole.

[0008] In some embodiments, the plug is located below the first through hole.

[0009] In some embodiments, the pressure-limiting mechanism further includes a spring, which promotes the plug to contact the first through hole.

[0010] In some embodiments, the bin body is further provided with a filter screen, which is located above the first through hole.

[0011] In some embodiments, it further includes a water baffle, which is located between the first through hole and the water outlet.

[0012] The water baffle is provided with a first inner cavity capable of accommodating the pressure-limiting mechanism, the plug can move in the first inner cavity, and the plug can extend out of the first inner cavity.

[0013] The upper end of the spring is connected with the flange of the plug, and the lower end of the spring is connected with the bottom of the first inner cavity.

[0014] In some embodiments, the top of the water baffle is provided with a central area and a peripheral area;The plug is located in the central area.

[0015] A first notch is provided in the central area, a second notch is provided in the edge area, and the first notch and the second notch are staggered.

[0016] In some embodiments, a drainage column is provided at the bottom of the water baffle, and the drainage column extends to the water outlet.

[0017] A coffee machine, comprising the above-mentioned pressure-limited coffee chamber, and also comprising a booster pump and a water tank;

[0018] One end of the booster pump is connected to the water tank, and the other end of the booster pump is connected to the coffee bin.

[0019] The beneficial effects of the utility model are as follows: the coffee bin is provided with a pressure limiting mechanism, which makes the pressure of the coffee bin tend to be stable, thereby ensuring more stable coffee quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural diagram of the coffee machine of the present invention;

[0021] Figure 2 This is an axonometric view of the coffee bin of the present invention;

[0022] Figure 3 This is an axonometric cross-sectional view of the coffee bin of the present invention;

[0023] Figure 4 This is a structural diagram of the water baffle and pressure limiting mechanism of the utility model;

[0024] Figure 5 for Figure 4 Exploded view of

[0025] Figure 6 This is a structural diagram of the water retaining plate of the present utility model;

[0026] Among them: 1-water tank; 2-boosting pump; 3-coffee chamber; 31-chamber body; 311-filter; 312-first through hole; 32-water baffle; 321-center area; 321a-first gap; 322-edge area; 322b-second gap; 324-drainage column; 323-first inner cavity; 33-pressure limiting mechanism; 331-plug; 3311-flange; 332-spring; 34-water outlet. DETAILED DESCRIPTION

[0027] The present invention will be further described in detail below with reference to the accompanying drawings.

[0028] refer to Figure 1 A coffee machine includes a coffee bin 3, a booster pump 2 and a water tank 1; the booster pump 2 can be a diaphragm booster pump 2, and a heating pipe and a thermostat can be provided at the bottom or below the water tank 1;

[0029] One end of the booster pump 2 may be connected to the water tank 1 through a pipeline, and the other end of the booster pump 2 may be connected to the coffee bin 3 through a pipeline.

[0030] The water tank 1 heats the water, and the booster pump 2 delivers the hot water or steam under a certain pressure to the coffee chamber 3, where it comes into contact with the coffee powder, thereby extracting coffee with a specific taste and aroma.

[0031] refer to Figures 2 to 6 A pressure-limiting coffee chamber 3 is capable of limiting the pressure of the coffee chamber 3 , and includes a chamber body 31 and a pressure-limiting mechanism 33 ;

[0032] The storage body 31 is used to store coffee powder, and a first through hole 312 is provided at the bottom of the storage body 31;

[0033] The pressure limiting mechanism 33 includes a plug 331 , which is movable to contact the first through hole 312 .

[0034] The pressure-limiting mechanism 33 can stabilize the pressure of the chamber 31, making the pressure of the chamber 31 more consistent and constant. When the pressure of the chamber 31 reaches a preset value, the pressure pushes the plug 331 away from the first through hole 312, thereby opening the first through hole 312 and allowing coffee to flow out of the first through hole 312. In this way, the quality of the extracted coffee is more stable.

[0035] The plug 331 may be located below the first through hole 312 .

[0036] refer to Figure 5 The pressure limiting mechanism 33 also includes a spring 332, which forces the plug 331 to contact the first through hole 312, and when the pressure of the chamber body 31 reaches a preset value, the pressure overcomes the elastic force of the spring 332, thereby pushing the plug 331 away from the first through hole 312.

[0037] According to the requirements of coffee taste, springs 332 of different specifications can be selected to limit or adjust different pressures of the warehouse body 31.

[0038] refer to Figure 3 The bin body 31 is further provided with a filter 311, which is arranged above the first through hole 312. The setting of the filter 311 prevents the coffee powder from leaking out.

[0039] refer to Figure 3 and Figure 5 The coffee bin 3 further includes a water baffle 32, which is located between the first through hole 312 and the water outlet 34. The water baffle 32 can disperse the coffee to the surrounding areas to prevent the coffee from directly rushing to the water outlet 34.

[0040] The water baffle 32 is provided with a first inner cavity 323 capable of accommodating the pressure limiting mechanism 33 , and the plug 331 is capable of moving in the first inner cavity 323 and extending out of the first inner cavity 323 ;

[0041] The upper end of the spring 332 is connected to the flange 3311 of the plug 331 , and the lower end of the spring 332 is connected to the bottom of the first inner cavity 323 .

[0042] refer to Figure 5 The top of the water retaining plate 32 is provided with a central area 321 and an edge area 322; the central area 321 and the edge area 322 are both concave structures, and the central area 321 is higher than the edge area 322; the plug 331 is located in the central area 321;

[0043] A first notch 321a is provided in the center region 321, and a second notch 322b is provided in the edge region 322. The first notch 321a and the second notch 322b are staggered. Two first notches 321a and two second notches 322b can be symmetrically arranged. This encourages the coffee to flow in a circuitous manner, slowing the flow of the coffee and reducing the risk of coffee being ejected from the water outlet 34.

[0044] refer to Figure 6 A drainage column 324 is provided at the bottom of the water baffle 32 , and the drainage column 324 extends to the water outlet 34 ; the drainage column 324 can cause the coffee to flow downwardly out of the water outlet 34 stably.

[0045] The above disclosure is only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, and these all fall within the scope of protection of the present invention.

Claims

1. A pressure-limited coffee chamber (3), characterized in that: It comprises a bin body (31) and a pressure limiting mechanism (33); The bin body (31) is used for placing coffee powder, and a first through hole (312) is provided at the bottom of the bin body (31); The pressure limiting mechanism (33) comprises a plug (331), and the plug (331) is movable to contact the first through hole (312).

2. A pressure-limited coffee chamber (3) according to claim 1, characterized in that: The plug (331) is located below the first through hole (312).

3. The pressure-limiting coffee chamber (3) according to claim 2, characterized in that: The pressure limiting mechanism (33) further includes a spring (332), and the spring (332) forces the plug (331) to contact the first through hole (312).

4. The pressure-limiting coffee chamber (3) according to claim 1, characterized in that: The bin body (31) is further provided with a filter screen (311), and the filter screen (311) is provided above the first through hole (312).

5. The pressure-limiting coffee chamber (3) according to claim 3, characterized in that: It also includes a water baffle (32), wherein the water baffle (32) is located between the first through hole (312) and the water outlet (34); The water baffle (32) is provided with a first inner cavity (323) capable of accommodating the pressure limiting mechanism (33); the plug (331) is capable of moving in the first inner cavity (323), and the plug (331) is capable of extending out of the first inner cavity (323); The upper end of the spring (332) is connected to the flange (3311) of the plug (331), and the lower end of the spring (332) is connected to the bottom of the first inner cavity (323).

6. The pressure-limiting coffee chamber (3) according to claim 5, characterized in that: The top of the water retaining plate (32) is provided with a central area (321) and an edge area (322); The plug (331) is located in the central area (321); The central area (321) is provided with a first notch (321a), and the edge area (322) is provided with a second notch (322b), and the first notch (321a) and the second notch (322b) are staggered.

7. The pressure-limiting coffee chamber (3) according to claim 5, characterized in that: A drainage column (324) is provided at the bottom of the water baffle (32), and the drainage column (324) extends to the water outlet (34).

8. A coffee machine, characterized in that: The invention comprises the pressure-limiting coffee chamber (3) according to any one of claims 1 to 7, and further comprises a booster pump (2) and a water tank (1); One end of the booster pump (2) is connected to the water tank (1), and the other end of the booster pump (2) is connected to the coffee bin (3).

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