Waterway system for extracting coffee from low-temperature cold water

Abstract

The utility model discloses a waterway system for extracting coffee from low-temperature cold water. Comprising a water tank, a first water pump, a second water pump, an ice liner, a third water pump, an electric heating module and an extraction bin, wherein the first water pump and the second water pump are connected with the water outlet end of the water tank through pipelines; the ice liner is connected with the water outlet end of the first water pump through a pipeline; the water outlet end of the third water pump and the water outlet end of the electric heating module are respectively connected with the water inlet end of the extraction bin through pipelines. By the adoption of the technical scheme, the function of brewing the low-temperature coffee is achieved, compared with the mode that the low-temperature coffee is made through ice blocks, the steps of making and adding the ice blocks are omitted, making of the low-temperature coffee is easier and faster, making time can be saved, and the using effect is good; the function of brewing hot coffee is realized, so that the double functions of brewing low-temperature coffee and brewing hot coffee can be realized, and the practicability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field related to coffee machines, and in particular to a water system for extracting coffee with low-temperature cold water. Background Art

[0002] As people's living standards continue to improve, their demands for coffee are becoming increasingly sophisticated. Drinking a cool cup of freshly brewed coffee on a hot day not only satisfies their craving for coffee, but also their desire for an icy, refreshing taste. Currently, cold brew coffee machines on the market use warm water to extract the coffee essence, then add ice cubes to cool it down to achieve an icy, refreshing taste. However, without ice cubes, cold brew coffee cannot be produced. Therefore, designing a water system that can produce cold brew coffee without adding ice cubes has become an urgent technical problem. Utility Model Content

[0003] In order to overcome the existing technical defects, the purpose of the present invention is to provide a water system for low-temperature cold water extraction of coffee to solve the above technical problems.

[0004] The technical solutions adopted by the present invention to solve the technical problems are as follows:

[0005] According to one aspect of the present invention, a water system for low-temperature cold water extraction of coffee is designed, comprising: a water tank, a first water pump and a second water pump connected to the water outlet of the water tank via a pipeline, an ice bladder connected to the water outlet of the first water pump via a pipeline, a third water pump connected to the water outlet of the ice bladder via a pipeline, an electric heating module connected to the water outlet of the second water pump via a pipeline, and an extraction chamber, wherein the water outlet of the third water pump and the water outlet of the electric heating module are respectively connected to the water inlet of the extraction chamber via pipelines.

[0006] The coffee is then poured into the ice container and the coffee is extracted, and the hot coffee is then poured into the ice container and the coffee is then poured into the ice container, and the coffee is then poured into the ice container and the coffee is then poured into the ice container.

[0007] In order to better solve the above technical defects, the present invention also has a better technical solution:

[0008] In some embodiments, a first water circuit switch is further included, the water outlet of the electric heating module is connected to the water inlet of the first water circuit switch through a pipeline, and the first water outlet of the first water circuit switch is connected to the water inlet of the extraction chamber through a pipeline.

[0009] In some embodiments, a first tee and a second tee are further included, the water outlet of the water tank is connected to one port of the first tee through a pipeline, the other two ports of the first tee are respectively connected to the first water pump and the second water pump through pipelines, the water outlet of the third water pump and the water outlet of the electric heating module are respectively connected to the two ports of the second tee through pipelines, and the other port of the second tee is connected to the water inlet of the extraction chamber through a pipeline.

[0010] In some embodiments, a filter device and a flow meter are further included. The water outlet of the water tank is connected to the water inlet of the filter device, the water outlet of the filter device is connected to the inlet of the flow meter via a pipeline, and the outlet of the flow meter is connected to one end of the first three-way pipe via a pipeline. The filter device can filter and remove impurities from the water, and the flow meter can monitor water consumption.

[0011] In some embodiments, a pressure relief valve and a water collection pan are further included. The water outlet of the second water pump is connected to the inlet of the pressure relief valve. The outlet of the pressure relief valve is connected to the water inlet of the electric heating module via a pipeline. The pressure relief port of the pressure relief valve is connected to the water inlet of a water tank or a filter device via a pipeline. The water collection pan is located below the extraction chamber, and the second water outlet of the first water circuit switch is connected to the water collection pan via a pipeline. The pressure relief valve can be provided to relieve pressure in the pipeline, and the water collection pan can be provided to collect water stains that fall after extraction in the extraction chamber. In addition, when the water inlet and the second water outlet of the first water circuit switch are unobstructed, the pressure in the pipeline between the pressure relief valve and the first water circuit switch can be discharged to the water collection pan for pressure relief, thereby preventing excessive pressure in the pipeline.

[0012] In some embodiments, a one-way valve is connected to the pipeline between the second three-way pipe and the extraction chamber.

[0013] In some embodiments, a second water circuit switch and a water outlet are further included. The water outlet of the third water pump is connected to the water inlet of the second water circuit switch via a pipeline. The first water outlet of the second water circuit switch is connected to the second three-way pipe via a pipeline, and the second water outlet is connected to the water outlet via a pipeline. Thus, when the water inlet of the second water circuit switch and the second water outlet above it are unobstructed, the third water pump is activated, and the cold water drawn from the ice bladder by the third water pump enters the second water circuit switch. The water is then output from the second water outlet of the second water circuit switch into the water outlet and then discharged, thereby achieving the function of outputting cold water.

[0014] In some embodiments, a third water circuit switch is further included. The output end of the electric heating module is connected to the water inlet end of the third water circuit switch via a pipeline. The first water outlet end of the third water circuit switch is connected to the water inlet end of the ice bladder via a pipeline. The third water circuit switch is used to control the boiling water or high-temperature steam delivered by the electric heating module to enter the ice bladder for high-temperature disinfection and cleaning of the ice bladder. The upper end of the ice bladder is provided with an exhaust channel, and the lower end is provided with a drain port. The drain port is provided for connecting to a switch valve via a pipeline to discharge water from the ice bladder. When the water in the ice bladder is emptied, the second water pump is activated to pump water from the water tank into the electric heating module for heating to form boiling water or high-temperature steam. The boiling water or high-temperature steam passes through the third water circuit switch (at this time, the water inlet end of the third water circuit switch and the first water outlet end above it are unobstructed) and then enters the interior of the ice bladder, thereby achieving high-temperature disinfection and cleaning of the interior of the ice bladder. This solves the problem of the ice bladder not being disinfected and cleaned in the water system of the existing coffee machine. The exhaust channel facilitates the discharge of gas during high-temperature steam disinfection, ensuring smooth disinfection.

[0015] In some embodiments, a third three-way pipe is further included, the third three-way pipe being connected to the pipeline between the third water pump and the second water circuit switch, and the second water outlet end of the third water circuit switch being connected to one end of the third three-way pipe via a pipeline. Thus, when the water inlet end of the third water circuit switch and the second water outlet end above it are unobstructed, the second water pump and the electric heating module are activated, and the second water pump draws water from the water tank into the electric heating module, where it is heated to form hot water, which then enters the third water circuit switch and is output from the second water outlet end of the third water circuit switch. The hot water then enters the second water circuit switch, is output from the second water outlet end of the second water circuit switch, enters the water outlet nozzle, and is discharged, thereby achieving the function of outputting hot water.

[0016] In some embodiments, the ice bladder is installed with a temperature sensor for monitoring the temperature of the internal liquid and a water level sensor for monitoring the height of the internal liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of the water system for low-temperature cold water coffee extraction according to the first embodiment;

[0018] Figure 2 This is a schematic structural diagram of the water system for low-temperature cold water coffee extraction according to the second embodiment;

[0019] Figure 3 This is a schematic structural diagram of a water system for low-temperature cold water coffee extraction according to a third embodiment;

[0020] Figure 4 This is a schematic structural diagram of a water system for low-temperature cold water coffee extraction according to a fourth embodiment;

[0021] Reference numerals:

[0022] 1. Water tank; 2. First water pump; 3. Second water pump; 4. Ice bladder; 5. Third water pump; 6. Electric heating module; 7. Extraction chamber; 8. First water circuit switch; 9. First three-way pipe; 10. Second three-way pipe; 11. Filter device; 12. Flow meter; 13. Pressure relief valve; 14. Water tray; 15. One-way valve; 16. Second water circuit switch; 17. Water outlet; 18. Third water circuit switch; 19. Third three-way pipe. DETAILED DESCRIPTION

[0023] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are merely illustrative and are not intended to limit the scope of the present invention. Furthermore, descriptions of known structures and technologies are omitted in the following description to avoid unnecessary confusion regarding the concepts of the present invention.

[0024] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0025] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, and fixing should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0026] Example 1

[0027] refer to Figure 1As shown, the present invention provides a water system for low-temperature cold water coffee extraction, comprising: a water tank 1, a first water pump 2, a second water pump 3, an ice bladder 4, a third water pump 5, an electric heating module 6, an extraction chamber 7, a first water circuit switch 8, a first three-way pipe 9, a second three-way pipe 10, a filter device 11, a flow meter 12, a pressure relief valve 13 and a water receiving tray 14.

[0028] The water outlet of the water tank 1 is connected to the water inlet of the filter device 11, and the filter device 11 is a conventional filter valve or filter. The water outlet of the filter device 11 is connected to the inlet of the flow meter 12 through a pipeline, and the outlet of the flow meter 12 is connected to one port of the first three-way pipe 9 through a pipeline. The other two ports of the first three-way pipe 9 are connected to the water inlet of the first water pump 2 and the water inlet of the second water pump 3 through pipelines respectively. The water outlet of the first water pump 2 is connected to the water inlet of the ice bladder 4 through a pipeline, and the water outlet of the ice bladder 4 is connected to the water inlet of the third water pump 5 through a pipeline. The water outlet of the third water pump 5 is connected to one port of the second three-way pipe 10 through a pipeline, and the water outlet of the second water pump 3 is connected to the inlet of the pressure relief valve 13 The pressure relief port of the pressure relief valve 13 is connected to the water inlet end of the water tank 1 or the filter device 11 through a pipeline, and the outlet of the pressure relief valve 13 is connected to the water inlet end of the electric heating module 6 through a pipeline. The electric heating module 6 is an electric heater for a conventional coffee machine or a water dispenser. The water outlet end of the electric heating module 6 is connected to the water inlet end of the first water circuit switch 8 through a pipeline. The first water circuit switch 8 is a three-position three-way solenoid valve. The first water outlet end of the first water circuit switch 8 is connected to the second port of the second three-way pipe 10 through a pipeline. The third port of the second three-way pipe 10 is connected to the water inlet end of the extraction chamber 7 through a pipeline. The water receiving tray 14 is arranged below the extraction chamber 7, and the second water outlet end of the first water circuit switch 8 is connected to the water receiving tray 14 through a pipeline.

[0029] The ice bladder 4 is equipped with a temperature sensor for monitoring the temperature of the liquid inside and a water level sensor for monitoring the height of the liquid inside. The ice bladder 4 includes a hollow shell and a semiconductor cooling chip arranged on the shell. The semiconductor cooling chip cools the water inside the shell.

[0030] The system also includes a conventional control circuit board, which is electrically connected to the first water pump 2, the second water pump 3, the ice bladder 4, the third water pump 5, the electric heating module 6, and the first water circuit switch 8, and is used to control the start and stop of each component. When the water level sensor detects that the liquid level in the ice bladder 4 is lower than the set water level, the water level sensor feedback information to the control circuit board, which controls the first water pump 2 to start. The first water pump 2 draws water from the water tank 1 into the ice bladder 4. When the water level in the ice bladder 4 reaches the set height, the control circuit board controls the first water pump 2 to stop. When the temperature sensor detects that the water temperature in the ice bladder 4 is higher than the set temperature, the temperature sensor feedback information to the control circuit board, which controls the ice bladder 4 to cool the water inside. When the water temperature in the ice bladder 4 reaches the set temperature, the control circuit board controls the ice bladder 4 to stop cooling. The pipes in this technical solution refer to food-grade plastic pipes or stainless steel pipes.

[0031] When the control circuit board controls the first water pump 2 to start, the water in the water tank 1 passes through the filter device 11, the flow meter 12, the first three-way pipe 9, and the first water pump 2 and then enters the ice chamber 4 for storage. The control circuit board controls the ice chamber 4 to start for refrigeration to cool the storable water to form cold water. When low-temperature coffee needs to be brewed, the coffee is placed in the extraction chamber 7, and the control circuit board controls the third water pump 5 to start. The cold water in the ice chamber 4 passes through the third water pump 5 and the second three-way pipe 10 and enters the extraction chamber 7 to extract the coffee. The extracted low-temperature coffee is output from the outlet below the extraction chamber 7. During the process of making low-temperature coffee, the water inlet end of the first water circuit switch 8 and the first water outlet end above it are in a cut-off state, or the water inlet end of the first water circuit switch 8 and the first water outlet end and the second water outlet end above it are both in a cut-off state.

[0032] When hot coffee needs to be brewed, the control circuit board controls the second water pump 3 and the electric heating module 6 to start, and controls the flow between the water inlet end and the first water outlet end above the first water circuit switch 8. The water in the water tank 1 passes through the filter device 11, the flow meter 12, the first three-way pipe 9, and the second water pump 3, and then enters the electric heating module 6 for heating. The heated hot water passes through the first water circuit switch 8 and the second three-way pipe 10 and enters the extraction chamber 7 to extract the coffee placed in the extraction chamber 7. The extracted hot coffee is discharged from the outlet below the extraction chamber 7. During the hot coffee brewing process, the third water pump 5 is in a stopped state.

[0033] Example 2

[0034] refer to Figure 2As shown, the second water system for low-temperature cold water extraction of coffee provided by the present invention is different from the first embodiment in that: it also includes a second water circuit switch 16 and a water outlet 17, the water outlet end of the third water pump 5 is connected to the water inlet end of the second water circuit switch 16 through a pipeline, the first water outlet end of the second water circuit switch 16 is connected to one end of the second three-way pipe 10 through a pipeline, the second water outlet end of the second water circuit switch 16 is connected to the water inlet end of the water outlet 17 through a pipeline, the second water circuit switch 16 is a three-position three-way solenoid valve, and the second water circuit switch 16 is electrically connected to the control circuit board.

[0035] When low-temperature coffee needs to be brewed, coffee is placed in the extraction chamber 7. The control circuit board controls the third water pump 5 to start, and controls the flow between the water inlet end and the first water outlet end above the second water circuit switch 16 to be unblocked. The cold water in the ice bladder 4 passes through the third water pump 5, the second water circuit switch 16, and the second three-way pipe 10 and enters the extraction chamber 7 to extract the coffee. The extracted low-temperature coffee is output from the outlet below the extraction chamber 7. During the low-temperature coffee making process, the flow between the water inlet end and the second water outlet end of the first water circuit switch 8 is in a cut-off state.

[0036] When drinking cold water is needed, the control circuit board controls the third water pump 5 to start, and controls the flow between the water inlet end of the second water circuit switch 16 and the second water outlet end above it. The cold water in the ice bladder 4 passes through the third water pump 5 and the second water circuit switch 16 and enters the water outlet 17, and the cold water is output through the water outlet 17.

[0037] When hot coffee needs to be brewed, the control circuit board controls the second water pump 3 and the electric heating module 6 to start, and controls the connection between the water inlet end and the first water outlet end of the first water circuit switch 8 to be unblocked. The water in the water tank 1 passes through the filter device 11, the flow meter 12, the first three-way pipe 9, and the second water pump 3, and then enters the electric heating module 6 for heating. The heated hot water passes through the first water circuit switch 8 and the second three-way pipe 10 and enters the extraction chamber 7 to extract the coffee placed in the extraction chamber 7. The extracted hot coffee is discharged from the outlet below the extraction chamber 7. During the hot coffee brewing process, the connection between the water inlet end and the first water outlet end of the second water circuit switch 16 is in a blocked state.

[0038] Example 3

[0039] refer to Figure 3As shown, the third water system for low-temperature cold water extraction of coffee provided by the present invention is different from the second embodiment in that: it also includes a third water circuit switch 18 and a third three-way pipe 19, the third three-way pipe 19 is connected to the pipeline between the third water pump 5 and the second water circuit switch 16, the output end of the electric heating module 6 is connected to the water inlet end of the third water circuit switch 18 through a pipeline, the third water circuit switch 18 is a three-position three-way solenoid valve, the first water outlet end of the third water circuit switch 18 is connected to the water inlet end of the ice chamber 4 through a pipeline, and the second water outlet end of the third water circuit switch 18 is connected to one end of the third three-way pipe 19 through a pipeline. The third water circuit switch 18 is used to control the boiling water or high-temperature steam delivered by the electric heating module 6 to enter the ice chamber 4 to perform high-temperature disinfection and cleaning on the ice chamber 4, and the third water circuit switch 18 is electrically connected to the control circuit board.

[0040] An exhaust channel is provided at the upper end of the ice bladder 4, and a drain port is provided at the lower end. The drain port is used to connect a switch valve through a pipeline to drain the water inside the ice bladder 4.

[0041] When low-temperature coffee needs to be brewed, the coffee is placed in the extraction chamber 7, and the third water pump 5 is started and controlled by the control circuit board, and the water inlet end and the first water outlet end of the second water circuit switch 16 are kept in an unobstructed state. The cold water in the ice bladder 4 passes through the third water pump 5, the third three-way pipe 19, the second water circuit switch 16, and the second three-way pipe 10 and enters the extraction chamber 7 to extract the coffee. The extracted low-temperature coffee is output from the outlet below the extraction chamber 7. During the low-temperature coffee making process, the water inlet end of the first water circuit switch 8 and the second water outlet end above it are in a cut-off state, and the water inlet end of the third water circuit switch 18 and the first and second water outlet ends above it are both in a cut-off state.

[0042] When drinking cold water is needed, the control circuit board controls the third water pump 5 to start, and controls the flow between the water inlet end of the second water circuit switch 16 and the second water outlet end above it to be in a unblocked state. The cold water in the ice bladder 4 passes through the third water pump 5, the third three-way pipe 19, and the second water circuit switch 16 and enters the water outlet nozzle 17, and the cold water is output through the water outlet nozzle 17. During the cold water output process, the flow between the water inlet end of the third water circuit switch 18 and the first water outlet end and the second water outlet end above it is in a cut-off state.

[0043] When hot coffee needs to be brewed, the control circuit board controls the second water pump 3 and the electric heating module 6 to start, and controls the connection between the water inlet end and the first water outlet end of the first water circuit switch 8 to be unblocked. The water in the water tank 1 passes through the filter device 11, the flow meter 12, the first three-way pipe 9, and the second water pump 3, and then enters the electric heating module 6 for heating. The heated hot water passes through the first water circuit switch 8 and the second three-way pipe 10 and enters the extraction chamber 7 to extract the coffee placed in the extraction chamber 7. The extracted hot coffee is discharged from the outlet below the extraction chamber 7. During the hot coffee brewing process, the connection between the water inlet end and the first water outlet end of the second water circuit switch 16 is in a blocked state.

[0044] When drinking hot water is needed, the control circuit board controls the second water pump 3 and the electric heating module 6 to start, and controls the water inlet end of the second water circuit switch 16 and the second water outlet end thereon to be unobstructed, and the water inlet end of the third water circuit switch 18 and the second water outlet end thereon to be unobstructed. The water in the water tank 1 passes through the filter device 11, the flow meter 12, the first three-way pipe 9, and the second water pump 3 and then enters the electric heating module 6 for heating. The heated hot water passes through the third water circuit switch 18, the third three-way pipe 19, and the second water circuit switch 16 and then enters the water outlet 17, and the hot water is output through the water outlet 17. During the hot water output process, the third water pump 5 is in a stopped state, and the water inlet end of the third water circuit switch 18 and the first water outlet end thereon are in a cut-off state.

[0045] When the ice chamber 4 needs to be disinfected and cleaned at high temperature, the water in the ice chamber 4 is first drained, and the second water pump 3 and the electric heating module 6 are started by controlling the control circuit board, and the water inlet end of the third water circuit switch 18 and the first water outlet end above it are unobstructed. The water in the water tank 1 passes through the filter device 11, the flow meter 12, the first three-way pipe 9, and the second water pump 3 and then enters the electric heating module 6 for heating. The boiling water or high-temperature steam formed by heating passes through the third water circuit switch 18 and enters the ice chamber 4 to perform high-temperature disinfection and cleaning on the ice chamber 4.

[0046] Example 4

[0047] The fourth water system for low-temperature cold water coffee extraction provided by the present invention is different from the first, second, or third embodiments in that a one-way valve 15 is connected to the pipeline between the second three-way pipe 10 and the extraction chamber 7. The one-way valve 15 is used to prevent the water in the pipeline from flowing back. This embodiment is described by taking the water system of the first embodiment as an example. Figure 4 shown.

[0048] The above are only some embodiments of the present invention. For ordinary technicians in this field, several modifications and improvements can be made without departing from the creative concept of the present invention, which all fall within the scope of protection of the present invention.

Claims

1. A water system for low-temperature cold water coffee extraction, characterized in that: include: A water tank, a first water pump and a second water pump connected to the water outlet of the water tank through a pipeline, an ice bladder connected to the water outlet of the first water pump through a pipeline, a third water pump connected to the water outlet of the ice bladder through a pipeline, an electric heating module connected to the water outlet of the second water pump through a pipeline, and an extraction chamber, wherein the water outlet of the third water pump and the water outlet of the electric heating module are respectively connected to the water inlet of the extraction chamber through pipelines.

2. The water system for low-temperature cold water coffee extraction according to claim 1, characterized in that: It also includes a first water circuit switch, the water outlet of the electric heating module is connected to the water inlet of the first water circuit switch through a pipeline, and the first water outlet of the first water circuit switch is connected to the water inlet of the extraction chamber through a pipeline.

3. The water system for low-temperature cold water coffee extraction according to claim 2, characterized in that: It also includes a first tee and a second tee, the water outlet end of the water tank is connected to one port of the first tee through a pipeline, the other two ports of the first tee are connected to the first water pump and the second water pump through pipelines respectively, the water outlet end of the third water pump and the water outlet end of the electric heating module are connected to the two ports of the second tee through pipelines respectively, and the other port of the second tee is connected to the water inlet end of the extraction chamber through a pipeline.

4. The water system for low-temperature cold water coffee extraction according to claim 3, characterized in that: It also includes a filtering device and a flow meter. The water outlet of the water tank is connected to the water inlet of the filtering device, the water outlet of the filtering device is connected to the inlet of the flow meter through a pipeline, and the outlet of the flow meter is connected to one port of the first three-way pipe through a pipeline.

5. The water system for low-temperature cold water coffee extraction according to claim 4, characterized in that: It also includes a pressure relief valve and a water receiving tray. The water outlet of the second water pump is connected to the inlet of the pressure relief valve. The outlet of the pressure relief valve is connected to the water inlet of the electric heating module through a pipeline. The pressure relief port of the pressure relief valve is connected to the water inlet of the water tank or the filtering device through a pipeline. The water receiving tray is arranged below the extraction chamber, and the second water outlet of the first water circuit switch is connected to the water receiving tray through a pipeline.

6. The water system for low-temperature cold water coffee extraction according to any one of claims 3 to 5, characterized in that: A one-way valve is connected to the pipeline between the second three-way pipe and the extraction chamber.

7. The water system for low-temperature cold water coffee extraction according to any one of claims 3 to 5, characterized in that: It also includes a second water circuit switch and a water outlet nozzle. The water outlet end of the third water pump is connected to the water inlet end of the second water circuit switch through a pipeline. The first water outlet end of the second water circuit switch is connected to the second three-way pipe through a pipeline, and the second water outlet end is connected to the water outlet nozzle through a pipeline.

8. The water system for low-temperature cold water coffee extraction according to claim 7, characterized in that: It also includes a third water circuit switch. The output end of the electric heating module is connected to the water inlet end of the third water circuit switch through a pipeline. The first water outlet end of the third water circuit switch is connected to the water inlet end of the ice chamber through a pipeline. The third water circuit switch is used to control the boiling water or high-temperature steam delivered by the electric heating module to enter the ice chamber for high-temperature disinfection and cleaning of the ice chamber. An exhaust channel is provided at the upper end of the ice chamber, and a drain outlet is provided at the lower end.

9. The water system for low-temperature cold water coffee extraction according to claim 8, characterized in that: It also includes a third three-way pipe, which is connected to the pipeline between the third water pump and the second water channel switch. The second water outlet end of the third water channel switch is connected to one end of the third three-way pipe through a pipeline.

10. The water system for low-temperature cold water coffee extraction according to claim 1, characterized in that: The ice bladder is provided with a temperature sensor for monitoring the temperature of the internal liquid and a water level sensor for monitoring the height of the internal liquid.

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