Soda water cold extraction coffee machine

Abstract

The utility model relates to the technical field of coffee machines, in particular to a soda water cold extraction coffee machine. Comprising a cold extraction assembly, an inflation assembly and a cup body assembly, an inflation cavity, a coffee cavity and an extraction cavity are formed in the cup body assembly, the cold extraction assembly and the inflation assembly share one integrated connector, and the cup body assembly is detachably installed on the integrated connector; the inflation assembly is communicated with the inflation cavity through a pipeline via the integrated connector, and the cold extraction assembly is communicated with the coffee cavity and the extraction cavity through a pipeline via the integrated connector. According to the soda water cold extraction coffee machine, the inner space of the cup body assembly is divided into the air inflation cavity, the coffee cavity and the extraction cavity which are relatively independent, the coffee cavity and the air inflation cavity are both arranged in the cup body assembly, the cup body assembly is split to enable the coffee cavity to be communicated with the air inflation cavity, and coffee stock solution in the coffee cavity is directly mixed with soda water in the air inflation cavity; fewer accessories can be used, cleaning and maintenance are convenient, and the requirements of users and the market are met.

Description

Technical Field

[0001] The utility model relates to the technical field of coffee machines, in particular to a soda water cold brew coffee machine. Background Art

[0002] At present, there are various soda water machines, cold brew coffee machines and other electrical appliances on the market, but these appliances can only make ordinary soda water or cold brew coffee alone, and cannot directly make multi-flavored drinks combining soda water and cold brew coffee. The reason is that during the soda water production process, a large number of bubbles will cause the coffee liquid to foam and expand, and in severe cases, it will block the pressure relief hole and cause safety problems such as bottle explosion.

[0003] Chinese patent CN10284393A discloses a beverage making system, comprising: a beverage precursor liquid supply device, which is configured to provide a precursor liquid; a cartridge chamber, which is configured to hold a first cartridge portion and a second cartridge portion; the first cartridge portion contains a carbon dioxide source for carbonating the precursor liquid; the second cartridge portion contains a beverage medium, which is configured to mix with a liquid precursor to form a beverage; wherein the system is configured to use the carbon dioxide gas released by the first cartridge portion to carbonate the precursor liquid, and to mix the beverage medium of the second cartridge portion with the precursor liquid.

[0004] The existing method of mixing carbonated water and beverages requires two sets of independent containers and systems. The overall structure is complex and more equipment needs to be cleaned and maintained later, which is very cumbersome. In addition, circuit boards are required for coordinated control between the various components of the system. The equipment is large in size, which also increases the cost and is difficult to apply and promote.

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

[0006] The utility model aims to provide a soda water cold brew coffee machine with a reasonable structure and capable of mixing cold brew coffee and soda water in order to address the defects and shortcomings of the prior art.

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

[0008] A soda water cold brew coffee machine described in the utility model includes a cold brew component, an aeration component and a cup body component. The cup body component is provided with an aeration chamber, a coffee chamber and an extraction chamber. The cold brew component and the aeration component share an integrated interface, and the cup body component is detachably mounted on the integrated interface. The aeration component is connected to the aeration chamber via a pipeline via the integrated interface, and the cold brew component is connected to the coffee chamber and the extraction chamber via a pipeline via the integrated interface. The cup body component divides its internal space into relatively independent aeration chambers, coffee chambers and extraction chambers. Of course, there is also remaining space in the cup body component as a flow path for gas and liquid. Among them, the aeration component is connected to the aeration chamber via an integrated interface, and water is filled into the aeration chamber. The aeration component fills carbon dioxide gas into the aeration chamber and mixes it with water to obtain soda water. It can be understood that the excess gas and pressure in the cup body component need to be discharged through the pressure relief valve.

[0009] Water is put into the coffee chamber, coffee powder is filled into the extraction chamber, and the cold brew assembly is connected to the extraction chamber and the coffee chamber through an integrated interface. Water can penetrate between the extraction chamber and the coffee chamber. The cold brew assembly inflates or inhales air into the coffee chamber or the extraction chamber, so that a pressure difference occurs between the coffee chamber and the extraction chamber. The pressure difference changes the penetration direction of water, and the coffee concentrate is obtained in the coffee chamber by continuously switching the penetration direction. Of course, after the extraction process and after the extraction is completed, the air pressure in the cup assembly needs to be discharged through the pressure relief valve.

[0010] Preferably, since the coffee chamber and the gas-filling chamber are both arranged in the cup body assembly, the coffee chamber and the gas-filling chamber are connected by splitting the cup body assembly, and the coffee concentrate in the coffee chamber is directly mixed with the soda water in the gas-filling chamber. The cup body assembly is installed on the same integrated interface, fewer accessories can be used, and it is easy to clean and maintain, and it is more convenient and flexible to use, meeting the needs of users and the market.

[0011] According to the above scheme, the cup body assembly includes an outer cup and an inner cup, the lower end of the outer cup is provided with a bottom cup, and the caliber of the bottom cup is smaller than that of the outer cup; the inner cup is inserted into the outer cup, a partition is provided between the lower end of the inner cup and the upper end of the bottom cup, the gas filling chamber is provided in the inner cavity of the bottom cup below the partition, the extraction chamber is provided in the inner cavity of the inner cup above the partition, and the coffee chamber is provided between the inner cup and the outer cup above the partition. The caliber of the bottom cup is smaller than that of the outer cup, the outer diameter of the inner cup is smaller than that of the outer cup, the outer cup and the inner cup form a parent-child nested structure, the inner cup is inserted into the inner cavity of the outer cup, the upper port of the inner cup is flush with the upper port of the outer cup and is respectively connected to the integrated interface. The lower end of the inner cup is inserted into the bottom cup, and the caliber gap between the lower end of the inner cup and the bottom cup is filled by a partition, and the partition is a sealing ring, so that a coffee chamber is formed in the gap between the inner cup and the outer cup, and the coffee chamber is relatively independent from the gas filling chamber. Specifically, the outer cup and the inner cup are paired to form a coffee chamber and an extraction chamber that are nested inside and outside, and there is space above the coffee chamber and the extraction chamber for air flow. When the inner cup and the outer cup are separated, the coffee chamber and the gas filling chamber are connected, so that the coffee extract flows into the gas filling chamber to mix with the soda water.

[0012] According to the above scheme, the extraction chamber is provided with a filter and coffee powder filled in the filter, and the extraction chamber is connected to the coffee chamber through the filter and the mesh on the side wall of the inner cup; the inner cup is provided with a channel tube, the channel tube is arranged in the extraction chamber, and the inflation component is connected to the inflation chamber through the channel tube. The extraction chamber is located at the lower part of the inner cup, and the inner cup can be made of stainless steel. The wall plate at the lower part of the inner cup has a mesh structure, so that the extraction chamber and the coffee chamber are relatively connected. Of course, since the extraction chamber is filled with a filter and coffee powder, and the coffee powder should be compacted, when the cold brew component is not working, the liquid fluidity between the extraction chamber and the coffee chamber is very poor, but the air can flow from the inner cup to the outer cup. Since the inner cup is connected to the integrated interface, and the filter and coffee powder are entities and filled in the extraction chamber between the integrated interface and the inflation chamber, in order to enable the pipeline of the inflation component to be connected to the inflation chamber, a channel tube is provided in the inner cup, and the channel tube passes through the extraction chamber to establish a passage between the integrated interface and the inflation chamber.

[0013] According to the above scheme, the inflation component includes a gas cylinder and a first knob switch. Carbon dioxide gas is infused into the gas cylinder. An inflation tube is provided on the integrated interface. The gas cylinder, the first knob switch and the inflation tube are connected in sequence through pipelines. The lower end of the inflation tube passes through the channel tube and is arranged in the inflation cavity. The inflation cavity is filled with water, and the lower end of the inflation tube is immersed in water. The first knob switch opens the passage between the gas cylinder and the inflation tube. At the same time, the first knob switch triggers the valve on the gas cylinder, so that carbon dioxide gas is filled in through the inflation tube and mixed with water to obtain soda water. At this time, excess gas fills the inflation cavity and the inner cup. Of course, the gas can enter the outer cup through the extraction cavity. A pressure relief device connected to the inner cup or the outer cup is provided on the integrated interface to discharge excess gas.

[0014] According to the above solution, the inflation component also includes an automatic pressure relief valve, and a first pressure relief interface is provided on the integrated interface, and the automatic pressure relief valve is connected to the coffee chamber through the first pressure relief interface. The preferred automatic pressure relief valve can set a safety threshold, and when the inflation component fills the inflation chamber with carbon dioxide gas, the pressure in the cup body component increases. When the pressure exceeds the threshold, the excess gas flows along the inflation chamber, the extraction chamber, the coffee chamber, and the outer cup cavity above the coffee chamber, and is discharged from the first pressure relief interface and the automatic pressure relief valve to relieve the pressure.

[0015] According to the above scheme, the cold extraction component includes an air pump, a first solenoid valve and a second solenoid valve, and an air suction interface and an air inlet interface are provided on the integrated interface. The air pump, the first solenoid valve, the air inlet interface and the extraction chamber are connected in sequence through a pipeline to form an air inlet passage, and the air pump, the second solenoid valve, the air suction interface and the extraction chamber are connected in sequence through a pipeline to form an air suction passage. The air pump is connected to the inner cup through the air inlet passage and the air suction passage respectively, and the extraction chamber of the inner cup is filled with a filter and coffee powder. Of course, there is also a cavity in the inner cup above the extraction chamber. The working process of the cold extraction component is as follows: water is loaded into the coffee chamber, and a filter and coffee powder are loaded into the extraction chamber. When the air pump and the first solenoid valve are started, air pressure is input into the inner cup through the air inlet passage, and the pressure in the extraction chamber is greater than the pressure in the coffee chamber, so that water penetrates from the extraction chamber to the coffee chamber. Conversely, when the air pump and the second solenoid valve are started, negative pressure is generated in the inner cup through the air suction passage, so that water penetrates from the coffee chamber to the extraction chamber. The above process is repeated cyclically, and a cold-extracted coffee concentrate with a high depth can be extracted in a short time. Then, the inner cup is separated from the outer cup, and the coffee concentrate flows into the aeration chamber to be quickly mixed with soda water to obtain a beverage with rich flavor. The operation is convenient and can meet the needs of the market and users.

[0016] According to the above scheme, the utility model also includes a manual pressure relief valve and a second knob switch, the integrated interface is provided with a second pressure relief interface, the second pressure relief interface is connected to the coffee chamber, and the manual pressure relief valve, the second knob switch, and the second pressure relief interface are sequentially connected through a pipeline. During the inflation process of the above cold brew component, the air pressure in the outer cup will rise, and the manual pressure relief valve is opened by the second knob switch, so that the pressure of the coffee chamber in the outer cup is lower than the pressure of the extraction chamber in the inner cup, so that water penetrates from the extraction chamber to the coffee chamber.

[0017] The utility model relates to a soda water cold brew coffee machine, in which the cup body assembly divides its internal space into relatively independent gas-filling chamber, coffee chamber and extraction chamber. The gas-filling chamber is connected to the gas-filling chamber through an integrated interface, and water is filled in the gas-filling chamber. The gas-filling chamber is filled with carbon dioxide gas by the gas-filling assembly and mixed with water to obtain soda water. Water is filled in the coffee chamber, and the extraction chamber is filled with coffee powder. The cold brew assembly is connected to the extraction chamber and the coffee chamber respectively through an integrated interface, and water can penetrate between the extraction chamber and the coffee chamber to obtain coffee concentrate. The coffee chamber and the gas-filling chamber are both arranged in the cup body assembly. The cup body assembly is split to connect the coffee chamber and the gas-filling chamber, and the coffee concentrate in the coffee chamber is directly mixed with the soda water in the gas-filling chamber. The cup body assembly is installed on the same integrated interface, so fewer accessories can be used, which is convenient for cleaning and maintenance, and is more convenient and flexible to use, meeting the needs of users and the market. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the structure of the cup body assembly of the utility model.

[0020] In the figure:

[0021] 1. Cup body assembly; 2. Integrated interface; 3. Gas cylinder; 4. Air pump; 11. Inflating chamber; 12. Coffee chamber; 13. Extraction chamber; 21. Outer cup; 22. Inner cup; 23. Bottom cup; 24. Separator; 25. Channel tube; 26. Inflating tube; 31. First knob switch; 32. Automatic pressure relief valve; 33. First pressure relief interface; 41. First solenoid valve; 42. Second solenoid valve; 43. Air suction interface; 44. Air intake interface; 45. Manual pressure relief valve; 46. Second knob switch; 47. Second pressure relief interface. DETAILED DESCRIPTION

[0022] The technical solution of the utility model is described below in conjunction with the accompanying drawings and embodiments.

[0023] like Figure 1As shown, a soda water cold brew coffee machine described in the utility model includes a cold brew component, an aeration component and a cup body component 1, wherein the cup body component 1 is provided with an aeration chamber 11, a coffee chamber 12 and an extraction chamber 13, the cold brew component and the aeration component share an integrated interface 2, and the cup body component 1 is detachably mounted on the integrated interface 2; the aeration component is connected to the aeration chamber 11 through a pipeline via the integrated interface 2, and the cold brew component is connected to the coffee chamber 12 and the extraction chamber 13 through a pipeline via the integrated interface 2. The cup body component 1 divides its internal space into relatively independent aeration chambers 11, coffee chambers 12 and extraction chambers 13. Of course, there is also a remaining space in the cup body component 1 as a flow path for gas and liquid. Among them, the aeration component is connected to the aeration chamber 11 through the integrated interface 2, water is filled in the aeration chamber 11, and the aeration component fills carbonic acid gas into the aeration chamber 11 and mixes it with water to obtain soda water. It can be understood that the excess gas and pressure in the cup body component 1 need to be discharged through the pressure relief valve.

[0024] Water is put into the coffee chamber 12, and coffee powder is filled into the extraction chamber 13. The cold brewing assembly is connected to the extraction chamber 13 and the coffee chamber 12 through the integrated interface 2. Water can penetrate between the extraction chamber 13 and the coffee chamber 12. The cold brewing assembly inflates or inhales air into the coffee chamber 12 or the extraction chamber 13, so that a pressure difference occurs between the coffee chamber 12 and the extraction chamber 13. The pressure difference changes the penetration direction of water, and the coffee concentrate is obtained in the coffee chamber 12 by continuously switching the penetration direction. Of course, after the extraction process and after the extraction is completed, the air pressure in the cup body assembly 1 needs to be discharged through the pressure relief valve.

[0025] Preferably, since the coffee chamber 12 and the gas chamber 11 are both arranged in the cup body assembly 1, the cup body assembly 1 is split to connect the coffee chamber 12 and the gas chamber 11, and the coffee concentrate in the coffee chamber 12 is directly mixed with the soda water in the gas chamber 11. The cup body assembly 1 is installed on the same integrated interface 2, fewer accessories can be used, which is convenient for cleaning and maintenance, and is more convenient and flexible to use, meeting the needs of users and the market.

[0026] The cup body assembly 1 includes an outer cup 21 and an inner cup 22. A bottom cup 23 is provided at the lower end of the outer cup 21, and the caliber of the bottom cup 23 is smaller than that of the outer cup 21. The inner cup 22 is inserted into the outer cup 21, and a partition 24 is provided between the lower end of the inner cup 22 and the upper end of the bottom cup 23. The inflation chamber 11 is provided in the inner cavity of the bottom cup 23 below the partition 24, the extraction chamber 13 is provided in the inner cavity of the inner cup 22 above the partition 24, and the coffee chamber 12 is provided between the inner cup 22 and the outer cup 21 above the partition 24. The caliber of the bottom cup 23 is smaller than that of the outer cup 21, and the outer diameter of the inner cup 22 is smaller than that of the outer cup 21. The outer cup 21 and the inner cup 22 form a parent-child nested structure. The inner cup 22 is inserted into the inner cavity of the outer cup 21, and the upper end of the inner cup 22 is flush with the upper end of the outer cup 21 and is respectively connected to the integrated interface 2. The lower end of the inner cup 22 is inserted into the bottom cup 23, and the caliber gap between the lower end of the inner cup 22 and the bottom cup 23 is filled by a partition 24, which is a sealing ring, so that a coffee chamber 12 is formed in the gap between the inner cup 22 and the outer cup 21, and the coffee chamber 12 is relatively independent from the gas-filled chamber 11. Specifically, the outer cup 21 and the inner cup 22 are paired to form a coffee chamber 12 and an extraction chamber 13 that are nested inside and outside, and there is space above the coffee chamber 12 and the extraction chamber 13 for air flow. When the inner cup 22 and the outer cup 21 are separated, the coffee chamber 12 and the gas-filled chamber 11 are connected, so that the coffee extract flows into the gas-filled chamber 11 to mix with the soda water.

[0027] The extraction chamber 13 is provided with a filter and coffee powder filled in the filter. The extraction chamber 13 is connected to the coffee chamber 12 through the filter and the mesh on the side wall of the inner cup 22. The inner cup 22 is provided with a channel tube 25, which penetrates the extraction chamber 13, and the gas charging component is connected to the gas charging chamber 11 through the channel tube 25. The extraction chamber 13 is located at the lower part of the inner cup 22. The inner cup 22 can be made of stainless steel. The wall plate at the lower part of the inner cup 22 has a mesh structure, so that the extraction chamber 13 and the coffee chamber 12 are relatively connected. Of course, since the extraction chamber 13 is filled with a filter and coffee powder, and the coffee powder should be compacted, when the cold extraction component is not working, the liquid fluidity between the extraction chamber 13 and the coffee chamber 12 is very poor, but air can flow from the inner cup 22 to the outer cup 21. Since the inner cup 22 is connected to the integrated interface 2, and the filter and coffee powder are solid and filled in the extraction chamber 13 between the integrated interface 2 and the inflation chamber 11, in order to allow the pipeline of the inflation component to be connected to the inflation chamber 11, a channel tube 25 is arranged in the inner cup 22, and the channel tube 25 passes through the extraction chamber 13 to establish a passage between the integrated interface 2 and the inflation chamber 11.

[0028] The gas filling assembly includes a gas cylinder 3 and a first knob switch 31. Carbon dioxide gas is infused into the gas cylinder 3. A gas filling tube 26 is provided on the integrated interface 2. The gas cylinder 3, the first knob switch 31 and the gas filling tube 26 are connected in sequence through pipelines. The lower end of the gas filling tube 26 passes through the channel tube 25 and is arranged in the gas filling chamber 11. The gas filling chamber 11 is filled with water, and the lower end of the gas filling tube 26 is immersed in water. The first knob switch 31 opens the passage between the gas cylinder 3 and the gas filling tube 26. At the same time, the first knob switch 31 triggers the valve on the gas cylinder 3, so that carbon dioxide gas is filled in through the gas filling tube 26 and mixed with water to obtain soda water. At this time, the excess gas is filled in the gas filling chamber 11 and the inner cup 22. Of course, the gas can enter the outer cup 21 through the extraction chamber 13. A pressure relief device connected to the inner cup 22 or the outer cup 21 is provided on the integrated interface 2 to discharge the excess gas.

[0029] The gas filling assembly further includes an automatic pressure relief valve 32, and a first pressure relief interface 33 is provided on the integrated interface 2, and the automatic pressure relief valve 32 is connected to the coffee chamber 12 through the first pressure relief interface 33. Preferably, the automatic pressure relief valve 32 can set a safety threshold, and when the gas filling assembly fills the gas filling chamber 11 with carbon dioxide gas, the pressure in the cup body assembly 1 increases, and when the pressure exceeds the threshold, the excess gas flows along the gas filling chamber 11, the extraction chamber 13, the coffee chamber 12, and the inner cavity of the outer cup 21 above the coffee chamber 12, and is discharged from the first pressure relief interface 33 and the automatic pressure relief valve 32 to release the pressure.

[0030] The cold extraction component includes an air pump 4, a first solenoid valve 41 and a second solenoid valve 42. An air suction interface 43 and an air inlet interface 44 are provided on the integrated interface 2. The air pump 4, the first solenoid valve 41, the air inlet interface 44 and the extraction chamber 13 are connected in sequence through a pipeline to form an air inlet passage. The air pump 4, the second solenoid valve 42, the air suction interface 43 and the extraction chamber 13 are connected in sequence through a pipeline to form an air suction passage. The air pump 4 is connected to the inner cup 22 through the air inlet passage and the air suction passage respectively. The extraction chamber 13 of the inner cup 22 is filled with a filter and coffee powder. Of course, there is also a cavity in the inner cup 22 above the extraction chamber 13. The working process of the cold extraction component is as follows: water is filled into the coffee chamber 12, and a filter and coffee powder are filled into the extraction chamber 13. When the air pump 4 and the first solenoid valve 41 are started, air pressure is input into the inner cup 22 through the air inlet passage. The pressure in the extraction chamber 13 is greater than the pressure in the coffee chamber 12, so that water penetrates from the extraction chamber 13 to the coffee chamber 12. On the contrary, when the air pump 4 and the second solenoid valve 42 are started, negative pressure is generated in the inner cup 22 through the air suction passage, so that water penetrates from the coffee chamber 12 to the extraction chamber 13. The above process is repeated cyclically, and a cold brewed coffee concentrate with a high depth can be extracted in a short time. Then, the inner cup 22 is separated from the outer cup 21, and the coffee concentrate flows into the inflation chamber 11 and is quickly mixed with soda water to obtain a beverage with rich taste. The operation is convenient and can meet the needs of the market and users.

[0031] The utility model further includes a manual pressure relief valve 45 and a second knob switch 46. The integrated interface 2 is provided with a second pressure relief interface 47, which is connected to the coffee chamber 12. The manual pressure relief valve 45, the second knob switch 46, and the second pressure relief interface 47 are sequentially connected through a pipeline. During the aeration process of the cold brew assembly, the air pressure in the outer cup 21 will rise, and the manual pressure relief valve 45 is opened by the second knob switch 46, so that the pressure of the coffee chamber 12 in the outer cup 21 is lower than the pressure of the extraction chamber 13 in the inner cup 22, so that water penetrates from the extraction chamber 13 to the coffee chamber 12.

[0032] The above description is only a preferred embodiment of the present utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the scope of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A soda water cold brew coffee machine, comprising a cold brew component, an aeration component and a cup body component, characterized in that: The cup body assembly is provided with an air filling chamber, a coffee chamber and an extraction chamber, the cold extraction assembly and the air filling assembly share an integrated interface, and the cup body assembly is detachably mounted on the integrated interface; The inflation component is connected to the inflation chamber via a pipeline via an integrated interface, and the cold extraction component is connected to the coffee chamber and the extraction chamber via a pipeline via an integrated interface.

2. The soda water cold brew coffee machine according to claim 1, characterized in that: The cup body assembly includes an outer cup and an inner cup, wherein a bottom cup is provided at the lower end of the outer cup, and the diameter of the bottom cup is smaller than that of the outer cup; the inner cup is inserted into the outer cup, and a partition is provided between the lower end of the inner cup and the upper end of the bottom cup, the inflation chamber is provided in the inner cavity of the bottom cup below the partition, the extraction chamber is provided in the inner cavity of the inner cup above the partition, and the coffee chamber is provided between the inner cup and the outer cup above the partition.

3. The soda water cold brew coffee machine according to claim 2, characterized in that: A filter screen and coffee powder filled in the filter screen are arranged in the extraction chamber, and the extraction chamber is connected to the coffee chamber through the filter screen and the mesh holes on the side wall of the inner cup; a channel tube is arranged in the inner cup, and the channel tube passes through the extraction chamber, and the inflation component is connected to the inflation chamber through the channel tube.

4. The soda water cold brew coffee machine according to claim 1, characterized in that: The inflation component includes a gas cylinder and a first knob switch. The gas cylinder is filled with carbon dioxide gas. An inflation tube is provided on the integrated interface. The gas cylinder, the first knob switch and the inflation tube are connected in sequence through pipelines. The lower end of the inflation tube passes through the channel tube and is arranged in the inflation cavity.

5. The soda water cold brew coffee machine according to claim 4, characterized in that: The inflation component also includes an automatic pressure relief valve. A first pressure relief interface is provided on the integrated interface. The automatic pressure relief valve is connected to the coffee chamber through the first pressure relief interface.

6. The soda water cold brew coffee machine according to claim 1, characterized in that: The cold extraction component includes an air pump, a first solenoid valve and a second solenoid valve. An air suction interface and an air inlet interface are provided on the integrated interface. The air pump, the first solenoid valve, the air inlet interface and the extraction chamber are connected in sequence through pipelines to form an air inlet passage. The air pump, the second solenoid valve, the air suction interface and the extraction chamber are connected in sequence through pipelines to form an air suction passage.

7. The soda water cold brew coffee machine according to claim 1, characterized in that: It also includes a manual pressure relief valve and a second knob switch. The integrated interface is provided with a second pressure relief interface, the second pressure relief interface is connected to the coffee chamber, and the manual pressure relief valve, the second knob switch, and the second pressure relief interface are connected in sequence through pipelines.

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