A coffee machine structure

Abstract

The application discloses a coffee machine structure which comprises a water tank, a water conveying pipe, a flow meter, a water pump, a heating pipe, a temperature sensor, a pressure relief valve and a shower head; the water tank, the flow meter, the water pump, the heating pipe, the temperature sensor and the shower head are sequentially connected through the water conveying pipe, one end of the pressure relief valve is connected between the temperature sensor and the shower head, and the other end of the pressure relief valve is connected between the water tank and the flow meter. The coffee machine structure can reduce the machine sound during coffee boiling and avoid the risk of pipe explosion and water leakage.

Description

Technical Field

[0001] This utility model relates to the field of coffee machine technology, and more specifically to a coffee machine structure. Background Technology

[0002] Currently, traditional drip coffee machines typically use one-way valves and U-shaped heating elements. For example, Chinese Patent No. CN207461944U discloses a coffee machine for making high-quality coffee, which includes a water tank, a heating element, a shower head, a funnel, and a heated cup. The heating element is a U-shaped heating element, with the water outlet of the water tank connected to one end of the U-shaped heating element. The other end of the U-shaped heating element is connected to the shower head through a water inlet pipe. The water outlet of the shower head faces the funnel, and the water outlet of the funnel corresponds to the heated cup. However, when the coffee machine is working, the valve ball inside the one-way valve will repeatedly collide with the valve body under the repeated action of water pressure, thus producing a loud collision sound. The machine is noisy during the coffee brewing process, and the brewing time is long and the temperature is unstable. In addition, when the heating element is blocked by scale or other debris from long-term use, a lot of pressure will be generated in the pipe. If the pressure is not released in time, the pipe pressure will continue to increase, which may cause the silicone tube to detach or burst, causing water to flow into the electrified parts. If the water becomes electrified and flows out of the machine, there is a risk of electric shock, which is unsafe. Utility Model Content

[0003] In order to overcome the above-mentioned shortcomings of the prior art, the present invention provides a coffee machine structure that can reduce the machine noise when brewing coffee and avoid the risk of pipe bursting and water leakage.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a coffee machine structure, including a water tank, a water supply pipe, a flow meter, a water pump, a heating element, a temperature sensor, a pressure relief valve, and a shower head; the water tank, flow meter, water pump, heating element, temperature sensor, and shower head are connected in sequence through the water supply pipe, and one end of the pressure relief valve is connected between the temperature sensor and the shower head, and the other end is connected between the water tank and the flow meter.

[0005] This technical solution provides a coffee machine structure that, through the use of a flow meter, water pump, heating element, temperature sensor, and added pressure relief valve, can achieve low machine noise, short brewing time, high and stable coffee temperature, accurate coffee water volume, and avoid the risk of pipe bursts and leaks due to abnormal pipe blockage, thus improving safety.

[0006] In a preferred embodiment, the system also includes an electronic control board, which is electrically connected to the flow meter, water pump, heating element, and temperature sensor.

[0007] In this technology, the electronic control board controls the water pump and heating element based on the monitoring data from the flow meter and temperature sensor, which can accurately control the amount of coffee water and adjust the coffee temperature.

[0008] In a preferred embodiment, the pressure relief valve includes a valve body, a seal, a spring, and a connector;

[0009] The valve body is equipped with a pressure relief channel, and the valve body is equipped with a pressure relief port and a return water port that communicate with the pressure relief channel. The pressure relief port is connected between the temperature sensor and the shower head; one end of the connector is inserted into the return water port, and the other end of the connector is connected between the water tank and the flow meter.

[0010] The seal and spring are located in the pressure relief channel. One end of the spring abuts against the connector, and the other end of the spring is connected to the seal. The seal closes the pressure relief port under the elastic force of the spring.

[0011] In this technology, the pressure relief valve includes a combination of a seal and a spring to open and close the pressure relief port on the valve body. It has a simple structure and low cost.

[0012] In a preferred embodiment, a joint sealing ring is provided between the joint and the valve body to improve sealing performance.

[0013] In a preferred embodiment, the heating element includes a water pipe in the middle and a heating section surrounding the water pipe. The heating section has at least two rows of heating wires arranged parallel to the water pipe, which can improve the heating power and heat the water quickly. Combined with a temperature sensor, it can shorten the coffee brewing time and produce coffee at a high and stable temperature.

[0014] In a preferred embodiment, the showerhead's outlet faces the funnel, and a coffee cup is located below the funnel's outlet. The water from the showerhead falls into the funnel to extract the coffee grounds, and the resulting coffee flows into the coffee cup.

[0015] In a preferred technical solution, the water supply pipe is a flexible hose with elasticity, which can flexibly adapt to various complex installation environments.

[0016] As can be seen from the above technical solution, compared with the prior art, the beneficial effects of this utility model are: the coffee machine structure provided by this utility model, by using a flow meter, water pump, heating element, temperature sensor and adding a pressure relief valve, can achieve low machine noise, short brewing time, high and stable coffee temperature, accurate coffee water volume, and avoid the risk of pipe bursting and leakage when the pipe is abnormally blocked, thus improving safety.

[0017] In addition, other advantages of this invention will be set forth in the description which follows, and in part will be obvious from the description or may be learned by practice of this invention. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0019] Figure 1 This is a structural diagram of the coffee machine of this utility model;

[0020] Figure 2 This is a cross-sectional structural diagram of the pressure relief valve of this utility model;

[0021] Figure 3 This is a cross-sectional structural diagram of the heating element of this utility model;

[0022] Explanation of reference numerals in the attached diagram: 1. Water tank; 2. Water pipe; 3. Flow meter; 4. Water pump; 5. Heating element; 51. Water pipe; 52. Heating wire; 6. Temperature sensor; 7. Pressure relief valve; 71. Valve body; 72. Seal; 73. Spring; 74. Connector; 75. Connector sealing ring; 8. Electrical control board; 9. Shower head; 10. Funnel; 11. Coffee cup. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] In the description of this utility model, it should be understood that the terms "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0025] Reference Figure 1-3 This invention describes a coffee machine structure according to an embodiment of the present invention, which can be applied to various coffee machines, especially drip-type high-temperature coffee machines.

[0026] In one embodiment, such as Figure 1-3 As shown, a coffee machine structure includes a water tank 1, a water pipe 2, a flow meter 3, a water pump 4, a heating element 5, a temperature sensor 6, a pressure relief valve 7, and a shower head 9.

[0027] Water tank 1, flow meter 3, water pump 4, heating element 5, temperature sensor 6 and shower head 9 are connected in sequence through water supply pipe 2. One end of pressure relief valve 7 is connected between temperature sensor 6 and shower head 9, and the other end is connected between water tank 1 and flow meter 3.

[0028] Water tank 1 is used to store the water needed for brewing coffee;

[0029] Water pipe 2 serves as a connector, and its shape and length are not limited. It is suitable for connecting components such as water tank 1, water pipe 2, flow meter 3, water pump 4, heating element 5, temperature sensor 6, pressure relief valve 7, and shower head 9. Preferably, it is a flexible hose with elasticity, such as silicone hose, rubber hose, corrugated hose, etc.

[0030] Flow meter 3 is used to accurately calculate the water output, ensuring precise coffee water volume.

[0031] The water pump 4 is used to pump water from the water tank 1 to the shower head 9. It operates quietly, which makes the machine quiet when brewing coffee.

[0032] Heating element 5 is used to heat the flowing water, enabling instant heating. Temperature sensor 6 is used to monitor the water temperature flowing out of heating element 5. By combining heating element 5 and temperature sensor 6, the coffee brewing time can be shortened, ensuring a high and stable coffee temperature.

[0033] The pressure relief valve 7 is used to allow water to flow back to the water tank 1 when the pressure in the water supply pipe 2 is too high, thereby achieving the pressure relief effect, avoiding the risk of pipe bursting and water leakage when the pipe is abnormally blocked, and improving safety; when the pressure in the coffee machine pipe is too high, the water tank 1 will no longer dispense water, and the backflow water can flow back from the water supply pipe 2 at the outlet end of the water tank 1 into the water tank 1.

[0034] Specifically, water in tank 1 flows through pipe 2 into shower head 9, and finally falls into funnel 10 to extract coffee powder, with the resulting coffee flowing into coffee cup 11. During this process, control board 8 controls the operating time of flow meter 3, water pump 4, heating element 5, and temperature sensor 6.

[0035] The above-mentioned coffee machine structure, by using a flow meter 3, a water pump 4, a heating element 5, a temperature sensor 6, and an added pressure relief valve 7, can achieve low machine noise, short brewing time, high and stable coffee temperature, accurate coffee water volume, and avoid the risk of pipe bursting and leakage when the pipes are abnormally blocked, thus improving safety.

[0036] In one embodiment, the coffee machine structure further includes an electronic control board 8, which is electrically connected to a flow meter 3, a water pump 4, a heating element 5, and a temperature sensor 6.

[0037] In this technology, the electronic control board 8 controls the water pump 4 and the heating element 5 based on the monitoring data of the flow meter 3 and the temperature sensor 6, which can accurately control the amount of coffee water and adjust the coffee temperature.

[0038] Among them, the flow meter 3 is used to precisely control the water volume. The flow meter 3 can be set to the water output of each pulse. The chip on the electronic control board 8 will set the number of pulses corresponding to the water volume required for coffee. When the flow meter 3 reaches the set number of pulses, the electronic control board 8 will control the water pump 4 to stop pumping water, thereby precisely controlling the water volume for coffee. With the cooperation of the temperature sensor 6, the electronic control board 8 can adjust the water temperature by controlling the speed of water pumping by the water pump 4, thereby achieving the adjustment of coffee temperature.

[0039] In practice, when the water temperature from the heating element 5 monitored by the temperature sensor 6 is lower than the set temperature range, the water pump 4 is controlled by the electronic control board 8 to reduce the pumping speed, so that the water stays in the heating element 5 for a longer time, thus increasing the heating time and raising the water temperature.

[0040] When the water temperature from the heating element 5, as monitored by the temperature sensor 6, is lower than the set temperature range, the water pump 4 is controlled by the electronic control board 8 to increase the pumping speed, so that the water stays in the heating element 5 for a shorter time. This shortens the time the water is heated and the water temperature will decrease.

[0041] In one embodiment, the pressure relief valve 7 includes a valve housing 71, a seal 72, a spring 73, and a connector 74; the valve housing 71 is provided with a pressure relief channel, and the valve housing 71 is provided with a pressure relief port and a return water port communicating with the pressure relief channel, and the pressure relief port is connected between the temperature sensor 6 and the shower head 9; one end of the connector 74 is inserted into the return water port, and the other end of the connector 74 is connected between the water tank 1 and the flow meter 3;

[0042] The seal 72 and the spring 73 are located in the pressure relief channel. One end of the spring 73 abuts against the connector 74, and the other end of the spring 73 is connected to the seal 72. The seal 72 closes the pressure relief port under the elastic force of the spring 73.

[0043] In this technology, the pressure relief valve 7 includes a combination of a seal 72 and a spring 73 to open and close the pressure relief port of the valve body 71. It has a simple structure and low cost.

[0044] Among them, the sealing element 72 is a sealing silicone element, and its shape that blocks one end of the pressure relief port can be arc-shaped, which can improve the sealing performance.

[0045] Working principle of pressure relief valve 7: When the pipeline pressure increases abnormally, water pushes the seal 72 from the pressure relief port of valve body 71. The spring 73 is compressed by the water pressure. After the seal 72 moves downward, a gap appears between it and the valve body 71. Water will flow into the pressure relief channel from the gap between the seal 72 and the valve body 71, and then flow back to the water tank 1 through the connector 74, thereby achieving the purpose of pressure relief.

[0046] In one embodiment, a joint sealing ring 75 is provided between the joint 74 and the valve housing 71 to improve sealing performance.

[0047] In one embodiment, the heating element 5 includes a water pipe 51 in the middle and a heating part arranged around the water pipe 51. The heating part is provided with at least two rows of heating wires 52. The at least two rows of heating wires 52 are arranged parallel to the water pipe 51, which can improve the heating power and heat the water quickly. Combined with the temperature sensor 6, it can make the coffee brewing time short and the coffee temperature high and stable.

[0048] The two ends of the water pipe 51 are connected to the water pump 4 and the temperature sensor 6 through the water supply pipe 2, respectively. When the water flows through the water pipe 51, it is quickly heated by the heating wire 52.

[0049] In one embodiment, the water outlet of the shower head 9 is directly facing the funnel 10, and a coffee cup 11 is provided below the water outlet of the funnel 10. The water from the shower head 9 falls into the funnel 10 to extract the coffee powder, and the resulting coffee flows into the coffee cup 11.

[0050] In practice, the coffee cup 11 can be a glass cup or a ceramic cup.

[0051] In one embodiment, the water pipe 2 is a flexible hose that can adapt flexibly to various complex installation environments.

[0052] In practice, the flexible hose can be a silicone tube, a rubber tube, or a plastic tube.

[0053] Other configurations and operations of the coffee machine structure according to the embodiments of this utility model are known to those skilled in the art and will not be described in detail here.

[0054] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0055] In the description of this specification, references to the terms "embodiment," "specific embodiment," "example," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example that is included in at least one embodiment or example of the present invention.

[0056] In this specification, the illustrative expressions of the terms used do not necessarily refer to the same embodiments or examples. Moreover, the specific features, structures, materials, or characteristics described may be combined with each other in any suitable manner in one or more embodiments or examples without interference or contradiction.

Claims

1. A coffee machine structure, characterized in that: Includes a water tank (1), a water pipe (2), a flow meter (3), a water pump (4), a heating element (5), a temperature sensor (6), a pressure relief valve (7), and a shower head (9); The water tank (1), the flow meter (3), the water pump (4), the heating element (5), the temperature sensor (6), and the shower head (9) are connected in sequence through the water supply pipe (2). One end of the pressure relief valve (7) is connected between the temperature sensor (6) and the shower head (9), and the other end is connected between the water tank (1) and the flow meter (3).

2. The coffee machine structure according to claim 1, characterized in that: It also includes an electronic control board (8), which is electrically connected to the flow meter (3), the water pump (4), the heating element (5) and the temperature sensor (6).

3. The coffee machine structure according to claim 2, characterized in that: The pressure relief valve (7) includes a valve body (71), a seal (72), a spring (73), and a connector (74); The valve housing (71) is provided with a pressure relief channel, and the valve housing (71) is provided with a pressure relief port and a return water port that communicate with the pressure relief channel. The pressure relief port is connected between the temperature sensor (6) and the shower head (9). One end of the connector (74) is inserted into the return water port, and the other end of the connector (74) is connected between the water tank (1) and the flow meter (3). The seal (72) and the spring (73) are located in the pressure relief channel. One end of the spring (73) abuts against the connector (74), and the other end of the spring (73) is connected to the seal (72). The seal (72) closes the pressure relief port under the elastic force of the spring (73).

4. The coffee machine structure according to claim 3, characterized in that: A joint sealing ring (75) is provided between the joint (74) and the valve body (71).

5. The coffee machine structure according to claim 2, characterized in that: The heating element (5) includes a water pipe (51) in the middle and a heating part arranged around the water pipe (51). The heating part is provided with at least two rows of heating wires (52), which are arranged parallel to the water pipe (51).

6. The coffee machine structure according to any one of claims 1 to 5, characterized in that: The water outlet of the shower head (9) is directly opposite the funnel (10), and a coffee cup (11) is provided below the water outlet of the funnel (10).

7. The coffee machine structure according to claim 1, characterized in that: The water supply pipe (2) is a flexible hose with elasticity.

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