Drip type high-temperature coffee machine structure

Abstract

The utility model relates to the technical field of coffee machines, in particular to a dripping type high-temperature coffee machine structure. Comprising a heating pot, a water tank, a funnel, a shower and a coffee cup, the heating pot is connected with the water tank through a pipeline with a one-way valve, the heating pot is connected with the water inlet end of the shower through a pipeline, and the water outlet end of the shower is matched with the funnel; the coffee machine further comprises a heater, and the coffee cup is placed on the heater and matched with the funnel. According to the dripping type high-temperature coffee machine structure, the water tank and the heating pot control the flow direction of cold water through the one-way valve, hot water is continuously output to the funnel through the shower head due to the thermal expansion effect of the heating pot, the water flow speed is stable, the temperature is accurate and controllable, and the coffee cup is kept at the set temperature through cooperation with the heater; the high-temperature quality requirement of gold cup coffee can be met, a water pump is not needed, energy is saved, and cost is lower.

Description

Technical Field

[0001] The utility model relates to the technical field of coffee machines, in particular to a structure of a drip type high-temperature coffee machine. Background Art

[0002] In traditional drip coffee machines, the best quality gold cup coffee machines (called ECBC in Europe) have very high requirements for coffee temperature. The central temperature of the funnel should reach 92 - 96 °C, and the central temperature of the glass cup should reach 80 - 85 °C. Currently, coffee machines that can meet this standard generally achieve the temperature requirement by controlling the flow rate with a water pump to match the water temperature. This method requires the coffee machine to increase the use of a water pump, and the cost is relatively high.

[0003] Chinese patent CN201814405U discloses an electric coffee machine, including a water tank, a water pipe, a check valve, a water heating device, an upper water pipe, a funnel, and a water kettle. One end of the lower water pipe is connected to the water heating device through a check valve; the other end of the lower water pipe is connected to the water tank; the upper part of the water heating device is communicated with one end of the upper water pipe, the other end of the upper water pipe is located above the funnel, and the water kettle is located below the funnel; a heating tube is installed in the water heating device.

[0004] The above-mentioned prior art realizes directly heating cold water by a heating tube and heating it to generate steam. The steam pressure closes the check valve connected to the lower water pipe, and the steam pressure keeps rising in the water heating device until the hot water is pushed into the upper water pipe, and the hot water flows into the coffee funnel. The prior art can control the water temperature output by the upper water pipe, but there is a surge in the form of wave peaks during the water filling process, and the hot water output is unstable, making it difficult to ensure the extraction temperature at the center of the funnel and the extraction liquid temperature in the glass cup, and it cannot meet the high-temperature quality requirements of gold cup coffee.

[0005] Therefore, the prior art still needs to be improved and developed. Content of the Utility Model

[0006] The purpose of the utility model is to provide a structure of a drip type high-temperature coffee machine with reasonable structure, optimized water flow rate, and reduced heat loss to ensure thermal balance in view of the defects and deficiencies of the prior art.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0008] The structure of a drip type high-temperature coffee machine described in the utility model includes a heating pot, a water tank, a funnel, a shower head, and a coffee cup. The heating pot is connected to the water tank through a pipe with a check valve. The heating pot is connected to the water inlet end of the shower head through a pipe. The water outlet end of the shower head is paired with the funnel; it further includes a heater, and the coffee cup is placed on the heater and paired with the funnel.

[0009] The water in the water tank flows towards the heating pot. The heating pot heats the water, causing it to expand. The pressure forces the water to flow through the pipeline towards the shower head, and then through the water outlet end of the shower head to brew the coffee powder in the funnel. The extracted coffee liquid flows into the coffee cup. Specifically, the one-way valve can control the water from flowing back from the heating pot to the water tank. The heater can heat the coffee cup to 80 - 85 degrees Celsius and then intermittently work to enter the heat preservation state. The water in the water tank first enters the heating pot until the water pressure between the water tank and the heating pot is balanced. The heating pot works to heat the water inside it to the critical value. The water and water vapor cause the internal pressure of the heating pot to rise. Due to the limitation of the one-way valve, the hot water cannot flow back to the water tank. The internal pressure forces the hot water in the heating pot to rush towards the shower head through the pipeline, and then the shower head outputs hot water at 92 - 96 degrees Celsius to the funnel. After the hot water and internal pressure in the heating pot are consumed, the water tank replenishes cold water to the heating pot again until the water pressure is balanced. Repeating the above process can make the shower head continuously output hot water, meeting the brewing requirements of the golden cup coffee. The heating pot, water tank, and shower head constitute the water supply system of the coffee machine. Since there is no need to use a water pump for water supply, the cost can be effectively reduced.

[0010] According to the above solution, the water tank is fixedly arranged on the heating pot. The water tank is connected to the water inlet end of the heating pot through a silicone tube, and a one-way valve is provided on the silicone tube; the shower head is fixedly arranged on the water tank, and an upper water pipe is provided at the water outlet end of the heating pot. The heating pot is connected to the water inlet end of the shower head through the upper water pipe. Specifically, the water tank is arranged at the upper end of the heating pot to form the main body. The water in the water tank can continuously be transported into the heating pot through the silicone tube under the action of gravity. When the heating pot works, the hot water expands to generate pressure and cannot flow back to the water tank under the action of the one-way valve. When the water temperature reaches the critical value (usually 100 degrees Celsius), it boils, forming water vapor and pressure, causing the water in the heating pot to flow towards the shower head through the upper water pipe.

[0011] According to the above solution, a water avoiding pipe is provided in the water tank. The water avoiding pipe is vertically arranged so that its lower port is paired with the heating pot; the water inlet end of the shower head is fixed at the upper end of the water avoiding pipe, and the upper water pipe passes through the water avoiding pipe so that both ends of the upper water pipe are respectively connected to the heating pot and the shower head. The water avoiding pipe is used to arrange the upper water pipe inside the water tank, and the water avoiding pipe isolates the upper water pipe from the water in the water tank to prevent heat loss.

[0012] According to the above solution, a number of water outlet holes are provided at the water outlet end of the shower head. The water outlet holes include large holes and small holes. The aperture of the large holes is larger than that of the small holes, and the number ratio of the large holes to the small holes is 1:4. Specifically, setting a number of water outlet holes on the shower head can improve the brewing uniformity of the hot water. Among them, the aperture of the large holes is D, and the aperture of the small holes is d, and D - d = 3.5 mm. It can be understood that a number of small holes are arranged around the large hole, and one large hole is configured with four small holes.

[0013] According to the above solution, a water outlet panel is provided on the water outlet end of the shower head. The inner wall of the water outlet panel is recessed downward to form a sedimentation tank; the several water outlet holes are opened on the water outlet panel. The water outlet panel is arranged on the bottom surface of the water outlet end of the shower head. A sedimentation tank is arranged on the water outlet panel as a buffer and storage area. The hot water flowing from the shower head to the water outlet end can be accumulated in the sedimentation tank and then flushed into the funnel through the several water outlet holes, which can ensure the continuous water flow during brewing and keep the water temperature in the funnel stable.

[0014] According to the above solution, an exhaust pipe is provided on the water outlet panel. The upper end of the exhaust pipe passes through the sedimentation tank and is arranged close to the top surface of the inner cavity of the shower head. It can be understood that the hot water entering the shower head from the water supply pipe contains steam. The exhaust pipe can discharge the steam to avoid the steam being ejected along with the water flow.

[0015] According to the above solution, a buffer baffle is provided in the inner cavity of the shower head. The buffer baffle can block the water flow in the shower head, so that the hot water impacts on the surface of the inner cavity of the shower head, forming a certain degree of heat dissipation / cooling to avoid the water temperature being too high.

[0016] According to the above solution, a cut-off assembly is provided at the lower port of the funnel. The cut-off assembly includes a static valve plate and a moving valve plate. The static valve plate is fixedly arranged at the lower port of the funnel, and the moving valve plate is rotatably attached to the static valve plate. Several drip holes are provided on the static valve plate, and the moving valve plate can cover or open the several drip holes by rotating. The relative rotation of the moving valve plate and the static valve plate can control the on-off of the drip holes, and the control principle is not elaborated here. The through-hole area of the drip holes is ST, and the through-hole area of the large holes on the shower head is SD. There are two drip holes on the static valve plate of the present invention, then 2ST = 1 / 2(N*SD), where N is the number of large holes.

[0017] According to the above solution, both the static valve plate and the moving valve plate are ceramic plates. The mating surfaces of the moving valve plate and the static valve plate made of ceramic plates are relatively smooth, so that the lower port of the funnel can be better sealed, and the sealing effect is reliable and controllable.

[0018] According to the above solution, the present invention further includes a base. The heating pot and the heater are arranged on the base. The heater includes a circuit board and a PTC heater. The circuit board is electrically connected to the PTC heater to control the operation of the PTC heater through a program. The power of the PTC heater is not less than 50W, and the working surface temperature is greater than 215 degrees Celsius, which can ensure that the temperature of the coffee cup is controlled between 80 - 85 degrees Celsius. The PTC heater is controlled by a program set on the circuit board. During continuous operation, the PTC heater can quickly heat the coffee cup to 80 - 85 degrees Celsius, and then the PTC heater intermittently or reduces the power to keep the coffee cup at the above set temperature.

[0019] The structure of a drip-type high-temperature coffee machine of the present utility model, the cold water flow between the water tank and the heating pot is controlled by a one-way valve, and the thermal expansion effect of the heating pot makes the hot water continuously output to the funnel through the shower head, the water flow rate is stable, the temperature is accurately controllable, and the coffee cup is kept at the set temperature by cooperating with the heater, which can meet the high-temperature quality requirements of the golden cup coffee, without a water pump, energy-saving and lower cost. Description of the Drawings

[0020] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0021] Figure 2 is a schematic cross-sectional structure diagram of the whole of the present utility model;

[0022] Figure 3 is a schematic diagram of the shower head structure of the present utility model;

[0023] Figure 4 is a schematic cross-sectional structure diagram of the shower head of the present utility model;

[0024] Figure 5 is a schematic diagram of the cut-off component structure of the present utility model.

[0025] In the figure:

[0026] 1. Heating pot; 2. Water tank; 3. Base; 4. Funnel; 11. Water inlet pipe; 12. Water avoidance pipe; 21. Shower head; 22. One-way valve; 23. Silicone tube; 24. Water outlet hole; 25. Water outlet panel; 26. Settlement tank; 27. Exhaust pipe; 28. Buffer baffle; 31. Circuit board; 32. PTC heater; 41. Coffee cup; 42. Static valve plate; 43. Moving valve plate; 44. Drip hole. Detailed Embodiments

[0027] The technical solutions of the present utility model will be described below in conjunction with the drawings and embodiments.

[0028] As Figures 1-5 shown, a drip-type high-temperature coffee machine structure described in the present utility model includes a heating pot 1, a water tank 2, a funnel 4, a shower head 21 and a coffee cup 41. The heating pot 1 is connected to the water tank 2 through a pipeline with a one-way valve 22, the heating pot 1 is connected to the water inlet end of the shower head 21 through a pipeline, and the water outlet end of the shower head 21 is paired with the funnel 4; it also includes a heater, and the coffee cup 41 is placed on the heater and paired with the funnel 4.

[0029] The water in the water tank 2 flows towards the heating pot 1. The heating pot 1 heats the water to make it expand, and the pressure makes the water flow through the pipeline towards the shower head 21. Then, the water is discharged from the outlet end of the shower head 21 to brew the coffee powder in the funnel 4, and the extracted coffee liquid flows into the coffee cup 41. Specifically, the one-way valve 22 can control the water so that it cannot flow back from the heating pot 1 to the water tank 2. The heater can heat the coffee cup 41 to 80 - 85 degrees Celsius, and then work intermittently to enter the heat preservation state. The water in the water tank 2 first enters the heating pot 1 until the water pressure between the water tank 2 and the heating pot 1 reaches equilibrium. The heating pot 1 works to heat the water inside it to the critical value. The water and water vapor cause the internal pressure of the heating pot 1 to rise. Due to the limitation of the one-way valve 22, the hot water cannot flow back to the water tank 2, and the internal pressure makes the hot water in the heating pot 1 rush through the pipeline towards the shower head 21, and then the shower head 21 outputs hot water at 92 - 96 degrees Celsius to the funnel 4. After the hot water and internal pressure in the heating pot 1 are consumed, the water tank 2 replenishes cold water to the heating pot 1 again until the water pressure reaches equilibrium. Repeating the above process can make the shower head 21 continuously output hot water, meeting the brewing requirements of the golden cup coffee. The heating pot 1, the water tank 2 and the shower head 21 constitute the water supply system of the coffee machine. Since there is no need to use a water pump for water supply, the cost can be effectively reduced.

[0030] The water tank 2 is fixedly arranged on the heating pot 1. The water tank 2 is connected to the water inlet end of the heating pot 1 through a silica gel tube 23, and a one-way valve 22 is arranged on the silica gel tube 23; the shower head 21 is fixedly arranged on the water tank 2, and a water supply pipe 11 is arranged at the water outlet end of the heating pot 1. The heating pot 1 is connected to the water inlet end of the shower head 21 through the water supply pipe 11. Specifically, the water tank 2 is arranged at the upper end of the heating pot 1 to form the main body. The water in the water tank 2 can continuously be transported into the heating pot 1 through the silica gel tube 23 under the action of gravity. When the heating pot 1 works, the hot water expands to generate pressure and cannot flow back to the water tank 2 under the action of the one-way valve 22. When the water temperature reaches the critical value (usually 100 degrees Celsius) and boils, water vapor and pressure are formed, making the water in the heating pot 1 flow towards the shower head 21 through the water supply pipe 11.

[0031] A water avoiding pipe 12 is arranged in the water tank 2. The water avoiding pipe 12 is vertically arranged so that its lower port is paired with the heating pot 1; the water inlet end of the shower head 21 is fixed at the upper end of the water avoiding pipe 12, and the water supply pipe 11 passes through the water avoiding pipe 12 so that both ends of the water supply pipe 11 are respectively connected to the heating pot 1 and the shower head 21. The water avoiding pipe 12 is used to arrange the water supply pipe 11 so that it is placed inside the water tank 2, and the water avoiding pipe 12 isolates the water supply pipe 11 from the water in the water tank 2 to prevent heat loss.

[0032] A plurality of water outlet holes 24 are provided at the water outlet end of the shower head 21. The water outlet holes 24 include large holes and small holes. The aperture of the large holes is larger than that of the small holes, and the number ratio of the large holes to the small holes is 1:4. Specifically, arranging a plurality of water outlet holes 24 on the shower head 21 can improve the evenness of hot water brewing. The aperture of the large holes is D, and the aperture of the small holes is d, and D - d = 3.5 mm. It can be understood that a plurality of small holes are arranged around the large holes, and one large hole is configured with four small holes.

[0033] A water outlet panel 25 is provided at the water outlet end of the shower head 21. The inner wall of the water outlet panel 25 is recessed downward to form a settling tank 26; the plurality of water outlet holes 24 are opened on the water outlet panel 25. The water outlet panel 25 is arranged on the bottom surface of the water outlet end of the shower head 21. A settling tank 26 is arranged on the water outlet panel 25 as a buffer and storage area. The hot water flowing from the shower head 21 to the water outlet end can be accumulated in the settling tank 26 and then brewed in the funnel 4 through the plurality of water outlet holes 24, which can ensure the continuity of the water flow during brewing and keep the water temperature in the funnel 4 stable.

[0034] An exhaust pipe 27 is provided on the water outlet panel 25. The upper end of the exhaust pipe 27 passes through the settling tank 26 and is arranged close to the top surface of the inner cavity of the shower head 21. It can be understood that the hot water entering the shower head 21 from the water supply pipe 11 contains steam, and the exhaust pipe 27 can discharge the steam to avoid steam jetting along with the water flow.

[0035] A buffer baffle 28 is arranged in the inner cavity of the shower head 21. The buffer baffle 28 can block the water flow in the shower head 21, so that the hot water impacts on the inner cavity surface of the shower head 21, forming a certain degree of heat dissipation / cooling to avoid too high water temperature.

[0036] A cut-off assembly is provided at the lower port of the funnel 4. The cut-off assembly includes a static valve plate 42 and a dynamic valve plate 43. The static valve plate 42 is fixedly arranged at the lower port of the funnel 4, and the dynamic valve plate 43 is rotatably attached to the static valve plate 42. A plurality of drip holes 44 are provided on the static valve plate 42, and the dynamic valve plate 43 can cover or open the plurality of drip holes 44 by rotation. Both the static valve plate 42 and the dynamic valve plate 43 are ceramic plates. The mating surface of the dynamic valve plate 43 and the static valve plate 42 made of ceramic plates is relatively smooth, so that the lower port of the funnel 4 can be better sealed, and the sealing effect is reliable and controllable. The relative rotation of the dynamic valve plate 43 and the static valve plate 42 can control the on-off of the drip holes 44, and the control principle is not elaborated here.

[0037] Furthermore, the through-hole area of the drip holes 44 is ST, and the through-hole area of the large holes on the shower head 21 is SD. There are two drip holes 44 on the static valve plate 42 of the present invention, then 2ST = 1 / 2(N * SD), where N is the number of large holes.

[0038] The utility model further includes a base 3, the heating pot 1 and the heater are arranged on the base 3, the heater includes a circuit board 31 and a PTC heater 32, and the circuit board 31 is electrically connected to the PTC heater 32 to control the operation of the PTC heater 32 through a program. The power of the PTC heater 32 is not less than 50W, and the working surface temperature is greater than 215 degrees Celsius, which can ensure that the temperature of the coffee cup 41 is controlled between 80 and 85 degrees Celsius. Further, the PTC heater 32 is controlled by a program set on the circuit board 31. When continuously working, the PTC heater 32 can quickly heat the coffee cup 41 to 80-85 degrees Celsius, and then the PTC heater 32 intermittently or reduces the power to keep the coffee cup 41 at the above set temperature.

[0039] The above is only the preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made according to the structure, features and principles described in the scope of the patent application of the present utility model are included in the scope of the patent application of the present utility model.

Claims

1. Structure of a drip-type high-temperature coffee machine, comprising a heating pot (1), a water tank (2), a base (3), a funnel (4), a shower head (21) and a coffee cup (41), characterized in that, The heating pot (1) is connected to the water tank (2) through a pipeline with a one-way valve (22), the heating pot (1) is connected to the water inlet end of the shower head (21) through a pipeline, and the water outlet end of the shower head (21) is arranged in a paired manner with the funnel (4); It further includes a heater, and the coffee cup (41) is placed on the heater and is arranged in a paired manner with the funnel (4).

2. The structure of the drip-type high-temperature coffee machine according to claim 1, characterized in that, The water tank (2) is fixedly arranged on the heating pot (1), the water tank (2) is connected to the water inlet end of the heating pot (1) through a silica gel tube (23), and a one-way valve (22) is arranged on the silica gel tube (23); the shower head (21) is fixedly arranged on the water tank (2), and a water supply pipe (11) is arranged at the water outlet end of the heating pot (1), and the heating pot (1) is connected to the water inlet end of the shower head (21) through the water supply pipe (11).

3. The structure of the drip-type high-temperature coffee machine according to claim 2, wherein, A water avoiding pipe (12) is arranged in the water tank (2), and the water avoiding pipe (12) is vertically arranged so that its lower port is arranged in a paired manner with the heating pot (1); the water inlet end of the shower head (21) is fixed at the upper end of the water avoiding pipe (12), and the water supply pipe (11) passes through the water avoiding pipe (12) so that both ends of the water supply pipe (11) are respectively connected to the heating pot (1) and the shower head (21).

4. The structure of the drip-type high-temperature coffee machine according to any one of claims 1-3, characterized in that, A number of water outlet holes (24) are arranged on the water outlet end of the shower head (21), the water outlet holes (24) include large holes and small holes, the aperture of the large holes is larger than that of the small holes, and the number ratio of the large holes to the small holes is 1:

4.

5. The structure of the drip-type high-temperature coffee machine according to claim 4, characterized in that A water outlet panel (25) is arranged on the water outlet end of the shower head (21), and a sedimentation tank (26) is formed by the inner wall of the water outlet panel (25) being recessed downward; the number of water outlet holes (24) is arranged on the water outlet panel (25).

6. The structure of the drip-type high-temperature coffee machine according to claim 5, wherein, An exhaust pipe (27) is arranged on the water outlet panel (25), and the upper end of the exhaust pipe (27) passes through the sedimentation tank (26) and is arranged close to the top surface of the inner cavity of the shower head (21).

7. The structure of the drip-type high-temperature coffee machine according to claim 4, wherein, A buffer baffle (28) is arranged in the inner cavity of the shower head (21).

8. The structure of the drip-type high-temperature coffee machine according to claim 1, wherein, A cut-off assembly is arranged at the lower port of the funnel (4), the cut-off assembly includes a static valve plate (42) and a dynamic valve plate (43), the static valve plate (42) is fixedly arranged at the lower port of the funnel (4), the dynamic valve plate (43) is rotatably attached to the static valve plate (42), a number of drip holes (44) are arranged on the static valve plate (42), and the dynamic valve plate (43) can cover or open a number of drip holes (44) by rotation.

9. The structure of the drip high-temperature coffee machine according to claim 8, characterized in that, Both the static valve plate (42) and the dynamic valve plate (43) are ceramic plates.

10. The structure of the drip-type high-temperature coffee machine according to claim 1, characterized in that, It further includes a base (3), the heating pot (1) and the heater are arranged on the base (3), the heater includes a circuit board (31) and a PTC heater (32), and the circuit board (31) is electrically connected to the PTC heater (32) to control the operation of the PTC heater (32) through a program.

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