A cold and hot coffee brewing system and coffee maker

Abstract

This application provides a hot and cold coffee brewing system and coffee machine, including: a steam boiler, a coffee boiler, a brewing head, a cooling component, and a control chip; the steam boiler is used to inject heated or heat-exchanged water into the coffee boiler; the coffee boiler is used to inject heated or heat-exchanged water into the brewing head; the cooling component provides a cooling source to the steam boiler and the coffee boiler; the coffee boiler and the brewing head are tightly fitted together; the control chip is used to acquire the water temperature of the coffee boiler and the water temperature of the brewing head in hot extraction mode, and control the heating of water in the coffee boiler and / or the water temperature of the brewing head using a preset first control program; and to acquire at least one of the water temperature of the steam boiler, the water temperature of the coffee boiler, and the water temperature of the brewing head in cold extraction mode, and control the operation of the cooling component using a preset second control program. This application can control the water temperature of hot and cold extracted coffee to obtain cold or hot coffee with richer layers of flavor.

Description

Technical Field

[0001] This application relates to the field of coffee machine technology, and in particular to a hot and cold coffee brewing system and a coffee machine. 。 Background Technology

[0002] Most coffee machines currently only have a hot extraction function. To make cold coffee, ice needs to be added to the cup beforehand, and the water portion that melts in the cup doesn't undergo high-pressure extraction, resulting in a decrease in coffee quality. Coffee machines with a cold brew function simply add ice or ice water to the tank, without precise temperature control for cold / hot extraction. This leads to unstable brewing water temperature, affecting the quality and taste of the coffee. Summary of the Invention

[0003] In view of this, this application provides a hot and cold coffee brewing system and coffee machine that can control the water temperature of hot and cold brew coffee to obtain coffee with a richer flavor profile; and solves the technical problems of some coffee machines lacking a cold brew function and having uncontrollable cold brew water temperature.

[0004] In a first aspect, this application provides a hot and cold coffee brewing system, comprising: a steam boiler, a coffee boiler, a brewing head, a refrigeration component, and a control chip; the steam boiler is used to inject heated or heat-exchanged water into the coffee boiler; the coffee boiler is used to inject heated or heat-exchanged water into the brewing head; the refrigeration component provides a cooling source to the steam boiler and the coffee boiler; the coffee boiler and the brewing head are tightly fitted together; the control chip is used to acquire the water temperature of the coffee boiler and the water temperature of the brewing head in hot extraction mode, and control the heating of water in the coffee boiler and / or the heating of water in the brewing head using a preset first control program; and to acquire at least one of the water temperature of the steam boiler, the water temperature of the coffee boiler, and the water temperature of the brewing head in cold extraction mode, and control the operation of the refrigeration component using a preset second control program.

[0005] Furthermore, the steam boiler is equipped with a steam boiler heater and an exchanger inside; the steam boiler heater is used to heat the water inside the steam boiler, and the water from the exchanger is injected into the coffee boiler; the steam boiler evaporator is installed outside or inside the steam boiler; the steam boiler evaporator is used to exchange heat with the water inside the steam boiler; a first thermistor is installed outside the steam boiler; the first thermistor is used to monitor the water temperature of the steam boiler.

[0006] Furthermore, a coffee boiler heater is installed inside the coffee boiler; the coffee boiler heater is used to heat the water inside the coffee boiler; a coffee boiler evaporator is installed outside or inside the coffee boiler; the coffee boiler evaporator is used to exchange heat with the water inside the coffee boiler; a second thermistor is installed outside the coffee boiler; the second thermistor is used to monitor the water temperature of the coffee boiler.

[0007] Furthermore, the brewing head includes a brewing head inlet pipe, a brewing head heater, a brewing head outlet pipe, and a pipe connector. The first side of the pipe connector is provided with an inlet and a solenoid valve that are connected to the outlet pipe of the coffee boiler. A third thermistor is provided on one side of the inlet. The second side of the pipe connector, opposite to the first side, is connected to the brewing head inlet pipe and the brewing head outlet pipe, respectively. Water from the brewing head inlet pipe flows to the brewing head outlet pipe through the solenoid valve. A fourth thermistor is provided on the brewing head outlet pipe.

[0008] Furthermore, the refrigeration components include: a compressor, a condenser, a fan, a refrigerant pipe, a tee, a coffee boiler two-way valve, a coffee boiler capillary tube, a steam boiler two-way valve, and a steam boiler capillary tube; the compressor and the condenser are connected by pipes; the condenser is arranged around the fan; a refrigerant delivery pipe extends from the condenser to a location near the coffee boiler and the steam boiler; the tee is respectively connected to the refrigerant delivery pipe, the coffee boiler two-way valve, and the steam boiler two-way valve; the coffee boiler capillary tube is respectively connected to the coffee boiler two-way valve and the coffee boiler evaporator; the steam boiler capillary tube is respectively connected to the steam boiler two-way valve and the steam boiler evaporator.

[0009] Furthermore, when in thermal extraction mode, the control chip is specifically used for:

[0010] Turn on the steam boiler heater to heat the water in the steam boiler, so that the water in the heat exchanger flows into the coffee boiler after it has been heated; obtain the water temperature of the steam boiler through the first thermistor, and turn off the steam boiler heater when the water temperature reaches the first preset temperature.

[0011] Turn on the coffee boiler heater and obtain the water temperature of the coffee boiler through the second thermistor. When the water temperature reaches the first preset temperature, turn off the coffee boiler heater.

[0012] When the hot water in the coffee boiler outlet pipe flows to the inlet of the adapter, the water temperature at the inlet is obtained through the third thermistor. When the water temperature is lower than the first preset temperature, the brew head heater is turned on to reheat the water in the brew head inlet pipe until the water temperature reaches the first preset temperature, and then the brew head heater is turned off.

[0013] When the solenoid valve is activated, water from the inlet pipe of the brewing head flows through the solenoid valve to the outlet pipe of the brewing head. The water temperature of the outlet pipe of the brewing head is obtained through the fourth thermistor. When the water temperature is lower than the first preset temperature, the coffee boiler heater and / or the brewing head heater are turned on until the water temperature reaches the first preset temperature. Then the coffee boiler heater and / or the brewing head heater are turned off.

[0014] Furthermore, when in cold extraction mode, the control chip is specifically used for:

[0015] The compressor and fan are started. The compressor compresses the refrigerant and it enters the condenser. The fan cools the condenser and the refrigerant in the condenser enters the refrigerant delivery pipeline.

[0016] When the two-way valve of the coffee boiler is opened, the refrigerant in the refrigerant delivery pipeline enters the capillary tube of the coffee boiler through the two-way valve for throttling, and then flows into the evaporator of the coffee boiler; the evaporator of the coffee boiler exchanges heat with the room temperature water in the coffee boiler, and after heat exchange, the refrigerant flows back to the compressor to circulate and do work.

[0017] The water temperature inside the coffee boiler is obtained through a second thermistor. When the water temperature reaches the second preset temperature, the two-way valve of the coffee boiler is closed and the two-way valve of the steam boiler is opened. The refrigerant in the refrigerant delivery pipeline enters the capillary tube of the steam boiler through the two-way valve of the steam boiler for throttling, and then flows into the steam boiler evaporator. The steam boiler evaporator exchanges heat with the water inside the steam boiler. After heat exchange, the refrigerant flows back to the compressor for circulation and work.

[0018] The water temperature inside the steam boiler is obtained by the first thermistor. When the water temperature reaches the second preset temperature, the two-way valve of the steam boiler is closed, and the compressor and fan are controlled to stop running.

[0019] When the water after heat exchange flows from the outlet pipe of the coffee boiler to the inlet of the pipe joint, the water temperature at the inlet is obtained through the third thermistor. When the water temperature is higher than the second preset temperature, the compressor and fan are controlled to start running.

[0020] When the solenoid valve is activated, the water in the inlet pipe of the brewing head flows through the solenoid valve to the outlet pipe of the brewing head. The water temperature in the outlet pipe of the brewing head is obtained through the fourth thermistor. When the water temperature is higher than the second preset temperature, the compressor and fan are controlled to start running.

[0021] Furthermore, the system also includes a water tank, a vibrating pump, and a rotary pump; the vibrating pump delivers water from the water tank to the steam boiler, and the rotary pump delivers water from the water tank to the heat exchanger.

[0022] Furthermore, when switching from hot extraction mode to cold extraction mode, the control chip is also used to:

[0023] Control the discharge of hot / cold water from the steam boiler and coffee boiler, and inject room temperature water for heat exchange;

[0024] Turn on the vibratory pump to pump water from the water tank into the steam boiler, and simultaneously turn on the rotary pump to pump water from the water tank into the exchanger, from which water is injected into the coffee boiler;

[0025] The water temperature of the steam boiler is obtained through a first thermistor, and the water temperature of the coffee boiler is obtained through a second thermistor.

[0026] When both the water temperature in the steam boiler and the water temperature in the coffee boiler are lower than the third preset water temperature, the compressor and fan are started.

[0027] Secondly, embodiments of this application provide a coffee machine, including the hot and cold coffee brewing system of embodiments of this application.

[0028] This application enables the control of water temperature for both hot and cold brewing of coffee, resulting in a more complex and flavorful hot or cold coffee. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the hot and cold coffee brewing system according to an embodiment of this application;

[0030] Figure 2 This is a schematic diagram of the brewing head according to an embodiment of this application;

[0031] Figure 3 This is a schematic diagram of the pipe connector and solenoid valve according to an embodiment of this application.

[0032] 1-Water tank; 2-Vibration pump; 3-Rotary pump; 4-Steam boiler; 5-Steam boiler heater

[0033] 6-Exchanger; 7-Steam boiler evaporator; 8-First thermistor;

[0034] 9-Steam boiler capillary tube; 10-Steam boiler two-way valve; 11-Coffee boiler two-way valve;

[0035] 12-Coffee boiler capillary tube; 13-Solenoid valve; 14-Second thermistor;

[0036] 15-Coffee boiler; 16-Coffee boiler evaporator; 17-Tee;

[0037] 18-Condenser; 19-Cooling fan; 20-Compressor; 21-Coffee boiler heater;

[0038] 22-Steam boiler descaling valve; 23-Water receiving tray; 24-Coffee boiler descaling valve;

[0039] 25-Brewing head; 27-Pipe connector; 28-Function funnel assembly; 29-Third thermistor;

[0040] 30 - Fourth thermistor; 31 - Water inlet; 32 - Cooking head heater;

[0041] 33-Water inlet pipe for brewing head; 34-Brewing head connector; 35-Water outlet pipe for brewing head. Detailed Implementation

[0042] Various embodiments and features of this application are described herein with reference to the accompanying drawings.

[0043] It should be understood that various modifications can be made to the embodiments described herein. Therefore, the above description should not be considered as limiting, but merely as an example of embodiments. Other modifications within the scope and spirit of this application will be apparent to those skilled in the art.

[0044] The accompanying drawings, which are included in and form part of this specification, illustrate embodiments of the present application and, together with the general description of the present application given above and the detailed description of the embodiments given below, serve to explain the principles of the present application.

[0045] These and other features of this application will become apparent from the following description of preferred forms of embodiments given as non-limiting examples, with reference to the accompanying drawings.

[0046] It should also be understood that although this application has been described with reference to some specific examples, those skilled in the art can certainly implement many other equivalent forms of this application.

[0047] The above and other aspects, features and advantages of this application will become more apparent when taken in conjunction with the accompanying drawings and in view of the following detailed description.

[0048] Specific embodiments of this application are described thereafter with reference to the accompanying drawings; however, it should be understood that the claimed embodiments are merely examples of this application, which can be implemented in various ways. Well-known and / or repeated functions and structures are not described in detail to avoid unnecessary or redundant details that could obscure the application. Therefore, the specific structural and functional details claimed herein are not intended to be limiting, but merely serve as the basis and representative basis for the claims to teach those skilled in the art to use this application in a variety of substantially any suitable detailed structures.

[0049] This specification may use the phrases “in one embodiment,” “in another embodiment,” “in yet another embodiment,” or “in other embodiments,” all of which may refer to one or more of the same or different embodiments according to this application.

[0050] First, a brief introduction to the design concept of the embodiments of this application will be given.

[0051] Coffee is typically extracted with hot water (around 92°C) and room temperature water, or with ice added to a water tank (the extraction temperature is uncontrollable); and there is no extraction with low-temperature water (3-8°C).

[0052] Most coffee machines currently only have a hot extraction function. To make cold coffee, ice needs to be added to the cup beforehand, and the water portion that melts in the cup doesn't undergo high-pressure extraction, resulting in a decrease in coffee quality. Coffee machines with a cold brew function simply add ice or ice water to the tank, without precise temperature control for cold / hot extraction. This leads to unstable brewing water temperature, affecting the quality and taste of the coffee.

[0053] To solve the above-mentioned technical problems, this application not only incorporates heating and cooling elements in the water circuit of the coffee machine, realizing both cold and hot coffee extraction functions, but also develops a composite temperature-controlled brewing water circuit system with segmented step-by-step work (cold / hot) and multiple temperature detections, achieving the technical effect of temperature-controlled cold and hot extraction.

[0054] The technical solution presented in this application can be widely applied to espresso machines, especially high-end espresso machines with temperature control requirements for both hot and cold extraction. This product requires minimal mold investment, has a simple structure and few installation steps, and is easy to mass-produce.

[0055] After introducing the application scenarios and design concepts of the embodiments of this application, the technical solutions provided by the embodiments of this application will be described below.

[0056] like Figure 1 As shown, this application provides a hot and cold coffee brewing system, including: a steam boiler 4, a coffee boiler 15, a brewing head 25, a refrigeration component, and a control chip;

[0057] The steam boiler 4 is used to inject heated or heat-exchanged water into the coffee boiler 15; the coffee boiler 15 is used to inject heated or heat-exchanged water into the brewing head 25; the refrigeration component provides a cooling source to the steam boiler 4 and the coffee boiler 15; the coffee boiler 15 and the brewing head 25 are in close contact.

[0058] The control chip is used to acquire the water temperature of the coffee boiler 15 and the water temperature of the brewing head 25 in the hot extraction mode, and to control the heating of the water in the coffee boiler 15 and / or the water in the brewing head using a preset first control program; and to acquire at least one of the water temperature of the steam boiler 4, the water temperature of the coffee boiler 15 and the water temperature of the brewing head 25 in the cold extraction mode, and to control the operation of the cooling component using a preset second control program.

[0059] like Figure 1As shown, the steam boiler 4 is equipped with a steam boiler heater 5 and an exchanger 6 inside; the steam boiler heater 5 is used to heat the water inside the steam boiler 4, and the water in the exchanger 6 is injected into the coffee boiler 15; the steam boiler evaporator 7 is provided outside or inside the steam boiler 4; the steam boiler evaporator 7 is used to exchange heat with the water inside the steam boiler 4; a first thermistor 8 is provided outside the steam boiler 4; the first thermistor 8 is used to monitor the water temperature of the steam boiler 4.

[0060] like Figure 1 As shown, a coffee boiler heater 21 is installed inside the coffee boiler 15; the coffee boiler heater 21 is used to heat the water inside the coffee boiler 15; a coffee boiler evaporator 16 is installed outside or inside the coffee boiler 15; the coffee boiler evaporator 16 is used to exchange heat with the water inside the coffee boiler 15; a second thermistor 14 is installed outside the coffee boiler 15; the second thermistor 14 is used to monitor the water temperature of the coffee boiler 15.

[0061] like Figure 2 As shown, the coffee boiler 15, brew head 25, and funnel assembly 28 are tightly fitted together from top to bottom. This allows for rapid heat / cold transfer from the coffee boiler 15 to the brew head 25, ensuring the temperature of the brew head 25 is as close as possible to that of the coffee boiler 15, thus reducing heat loss in the piping. Simultaneously, the power of the brew head 25 during the initial preheating stage also assists in rapidly heating the coffee boiler 15, achieving a rapid preheating effect.

[0062] like Figure 2 and Figure 3 As shown, the brewing head 25 includes a brewing head inlet pipe 33, a brewing head heater 32, a brewing head outlet pipe 35, a brewing head connector 34, and a pipe joint 27. A water inlet 31, communicating with the outlet pipe of the coffee boiler 15, is provided on the first side of the pipe joint 27. A solenoid valve 13 is provided on the first side of the pipe joint 27, and a third thermistor 29 is provided on one side of the water inlet. The second side of the pipe joint 27, opposite to the first side, is connected to the brewing head inlet pipe 33 and the brewing head outlet pipe 35, respectively. Water from the brewing head inlet pipe 33 flows through the solenoid valve 13 to the brewing head outlet pipe 35. A fourth thermistor 30 is provided at the brewing head outlet pipe 35.

[0063] In addition, the coffee boiler evaporator 16 can be extended to the brew head water inlet pipe 33 to exchange heat with the water in the brew head water inlet pipe 33.

[0064] like Figure 1As shown, the refrigeration assembly includes: a compressor 20, a condenser 18, a fan 19, a refrigerant pipe, a tee 17, a coffee boiler two-way valve 11, a coffee boiler capillary tube 12, a steam boiler two-way valve 10, and a steam boiler capillary tube 9; the compressor 20 and the condenser 18 are connected by pipes; the condenser 18 is arranged around the fan 19; a refrigerant delivery pipe extends from the condenser 18 to a location near the coffee boiler 15 and the steam boiler 4; the tee 17 is connected to the refrigerant delivery pipe, the coffee boiler two-way valve 11, and the steam boiler two-way valve 10 respectively; the coffee boiler capillary tube 12 is connected to the coffee boiler two-way valve 11 and the coffee boiler evaporator 16 respectively; the steam boiler capillary tube 9 is connected to the steam boiler two-way valve 10 and the steam boiler evaporator 7 respectively.

[0065] Compressor 20 performs work on the refrigerant, compressing it and discharging high-temperature, high-pressure gas that flows into condenser 18. Fan 19 dissipates heat from condenser 18, causing the refrigerant to become a room-temperature, high-pressure liquid. When coffee boiler two-way valve 11 is open and steam boiler two-way valve 10 is closed, the liquid refrigerant passes through coffee boiler two-way valve 11 and enters coffee boiler capillary tube 12, where it is throttled into a low-temperature, low-pressure liquid refrigerant. It then flows into coffee boiler evaporator 16, where it exchanges heat with the room-temperature water in coffee boiler 15. After heat exchange, the refrigerant, in a low-temperature, low-pressure gaseous state, flows back to compressor 20 to perform work in a cycle. When coffee boiler two-way valve 11 is closed and steam boiler two-way valve 10 is open, the liquid refrigerant passes through steam boiler two-way valve 10 and enters steam boiler capillary tube 9, where it is throttled into a low-temperature, low-pressure liquid refrigerant. It then flows into steam boiler evaporator 7, where it exchanges heat with the room-temperature water in steam boiler 4. After heat exchange, the refrigerant, in a low-temperature, low-pressure gaseous state, flows back to compressor 20 to perform work in a cycle.

[0066] When in thermal extraction mode, the control chip is specifically used for:

[0067] Turn on the steam boiler heater 5 to heat the water in the steam boiler 4, so that the water in the heat exchanger 6 flows into the coffee boiler 15 after the water temperature is raised; obtain the water temperature of the steam boiler 4 through the first thermistor 8, and turn off the steam boiler heater 5 when the water temperature reaches the first preset temperature.

[0068] Turn on the coffee boiler heater 21, obtain the water temperature of the coffee boiler 15 through the second thermistor 14, and turn off the coffee boiler heater 21 when the water temperature reaches the first preset temperature.

[0069] When the hot water in the coffee boiler outlet pipe flows to the inlet of the pipe connector 27, the water temperature at the inlet is obtained through the third thermistor 29. When the water temperature is lower than the first preset temperature, the brewing head heater 32 is turned on to reheat the water in the brewing head inlet pipe 33 until the water temperature reaches the first preset temperature, and then the brewing head heater 32 is turned off.

[0070] When the solenoid valve 13 is activated, the water in the inlet pipe 33 of the brewing head flows through the solenoid valve 13 to the outlet pipe 35 of the brewing head. The water temperature of the outlet pipe 35 of the brewing head is obtained through the fourth thermistor 30. When the water temperature is lower than the first preset temperature, the coffee boiler heater 21 and / or the brewing head heater 32 are turned on until the water temperature reaches the first preset temperature. Then the coffee boiler heater 21 and / or the brewing head heater 32 are turned off.

[0071] When in cold extraction mode, the control chip is specifically used for:

[0072] The compressor 20 and fan 19 are started. The compressor 20 compresses the refrigerant and it enters the condenser 18. The fan 19 cools the condenser 18 and the refrigerant in the condenser 18 enters the refrigerant delivery pipeline.

[0073] When the coffee boiler two-way valve 11 is opened, the refrigerant in the refrigerant delivery pipeline enters the coffee boiler capillary tube 12 through the coffee boiler two-way valve 11 for throttling, and then flows into the coffee boiler evaporator 16; the coffee boiler evaporator 16 exchanges heat with the water in the coffee boiler 15, and after heat exchange, the refrigerant flows back to the compressor 20 to circulate and do work.

[0074] The water temperature inside the coffee boiler 15 is obtained through the second thermistor 14. When the water temperature reaches the second preset temperature, the coffee boiler two-way valve 11 is closed and the steam boiler two-way valve 10 is opened. The refrigerant in the refrigerant delivery pipeline enters the steam boiler capillary tube 9 through the steam boiler two-way valve 10 for throttling, and then flows into the steam boiler evaporator 7. The steam boiler evaporator 7 exchanges heat with the water in the steam boiler 4. After heat exchange, the refrigerant flows back to the compressor 20 for circulation and work.

[0075] The water temperature inside the steam boiler 4 is obtained by the first thermistor 8. When the water temperature reaches the second preset temperature, the two-way valve 10 of the steam boiler is closed, and the compressor 20 and fan 19 are controlled to stop running.

[0076] When the water after heat exchange flows from the outlet pipe of the coffee boiler 15 to the inlet of the pipe joint 27, the water temperature at the inlet is obtained through the third thermistor 29. When the water temperature is higher than the second preset temperature, the compressor 20 and the fan 19 are controlled to start running.

[0077] When the solenoid valve 13 is activated, the water in the inlet pipe 33 of the brewing head flows through the solenoid valve 13 to the outlet pipe 35 of the brewing head. The water temperature of the outlet pipe 35 of the brewing head is obtained through the fourth thermistor 30. When the water temperature is higher than the second preset temperature, the compressor 20 and the fan 19 are controlled to start running.

[0078] like Figure 1As shown, the system also includes: a water tank 1, a vibration pump 2, and a rotary pump 3; the vibration pump 2 delivers water from the water tank 1 to the steam boiler 4, and the rotary pump 3 delivers water from the water tank 1 to the heat exchanger 6.

[0079] To improve extraction efficiency, when switching from hot extraction mode to cold coffee extraction mode, the control chip is also used for:

[0080] Control the hot water discharge from steam boiler 4 and coffee boiler 15;

[0081] For example, hot water can be discharged for heat exchange through a hot water tap or descaling valve.

[0082] Turn on the vibration pump 2 to pump the room temperature water from the water tank 1 into the steam boiler 4, and at the same time turn on the rotary pump 3 to pump the room temperature water from the water tank 1 into the exchanger 6, and the room temperature water from the exchanger 6 is injected into the coffee boiler 15.

[0083] The water temperature of the steam boiler 4 is obtained through the first thermistor 8, and the water temperature of the coffee boiler 15 is obtained through the second thermistor 14.

[0084] When the water temperature of the steam boiler 4 and the water temperature of the coffee boiler 15 are both lower than the third preset water temperature, the compressor 20 and the fan 19 are started.

[0085] Similarly, to improve extraction efficiency, when switching from cold extraction mode to hot coffee extraction mode, the control chip is also used to:

[0086] Control the discharge of cold water from steam boiler 4 and coffee boiler 15;

[0087] For example, cold water can be drained through a faucet or descaling valve.

[0088] Turn on the vibration pump 2 to pump the room temperature water from the water tank 1 into the steam boiler 4, and at the same time turn on the rotary pump 3 to pump the room temperature water from the water tank 1 into the exchanger 6, and the room temperature water from the exchanger 6 is injected into the coffee boiler 15.

[0089] The water temperature of the steam boiler 4 is obtained through the first thermistor 8, and the water temperature of the coffee boiler 15 is obtained through the second thermistor 14.

[0090] When the water temperature of steam boiler 4 and coffee boiler 15 are both higher than the fourth preset water temperature, start steam boiler heater 5 and coffee boiler heater 21.

[0091] Based on the same inventive concept, this application also provides a coffee machine, including the hot and cold coffee brewing system of the above embodiments.

[0092] Since the coffee machine of this application embodiment includes the hot and cold coffee brewing system of this application embodiment, it has the technical advantages of the hot and cold coffee brewing system of this application embodiment: it can control the water temperature of hot extraction and cold extraction coffee to obtain cold or hot coffee with richer layers.

[0093] Furthermore, although illustrative embodiments are described herein, the scope includes any and all embodiments having equivalent elements, modifications, omissions, combinations (e.g., combinations of schemes across various embodiments), adjustments, or alterations based on this disclosure. Elements in the claims are to be interpreted broadly based on the language used in the claims and are not limited to the examples described herein or during the duration of this application. Moreover, the steps of the disclosed methods can be modified in any way, including by reordering steps or inserting or deleting steps. Therefore, the description is intended to be merely illustrative, and the true scope is indicated by the following claims and their full equivalents.

[0094] The above description is intended to be illustrative and not restrictive. For example, the examples (or one or more aspects thereof) described above can be used in combination with each other. Other embodiments can be used by those skilled in the art after reading the above description. Moreover, various features can be combined together in the above detailed description to simplify this disclosure. This should not be construed as meaning that any disclosed feature not claimed is essential to any claim. Therefore, the following claims are incorporated into the detailed description as examples or embodiments, wherein each claim is itself a separate embodiment, and these embodiments can be contemplated to be combined with each other in various combinations or substitutions. The scope of the invention should be determined with reference to the appended claims and the full scope of the equivalents conferred by those claims.

Claims

1. A hot and cold coffee brewing system, characterized in that, include: A steam boiler, a coffee boiler, a brewing head, a refrigeration assembly, and a control chip; the steam boiler is used to inject heated or heat-exchanged water into the coffee boiler. The coffee boiler is used to inject heated or heat-exchanged water into the brewing head; the refrigeration unit provides a cooling source to the steam boiler and the coffee boiler; the coffee boiler and the brewing head are in close contact; The control chip is used to acquire the water temperature of the coffee boiler and the water temperature of the brewing head in the hot extraction mode, and to control the heating of the water in the coffee boiler and / or the heating of the water in the brewing head using a preset first control program. Used in cold extraction mode to obtain at least one of the water temperature of the steam boiler, the water temperature of the coffee boiler, and the water temperature of the brewing head, and to control the operation of the refrigeration component using a preset second control program; When in thermal extraction mode, the control chip is specifically used for: Turn on the steam boiler heater to heat the water in the steam boiler, so that the water in the heat exchanger flows into the coffee boiler after it has been heated; obtain the water temperature of the steam boiler through the first thermistor, and turn off the steam boiler heater when the water temperature reaches the first preset temperature. Turn on the coffee boiler heater and obtain the water temperature of the coffee boiler through the second thermistor. When the water temperature reaches the first preset temperature, turn off the coffee boiler heater. When the hot water in the coffee boiler outlet pipe flows to the inlet of the adapter, the water temperature at the inlet is obtained through the third thermistor. When the water temperature is lower than the first preset temperature, the brew head heater is turned on to reheat the water in the brew head inlet pipe until the water temperature reaches the first preset temperature, and then the brew head heater is turned off. When the solenoid valve is activated, water from the inlet pipe of the brewing head flows through the solenoid valve to the outlet pipe of the brewing head. The water temperature of the outlet pipe of the brewing head is obtained through the fourth thermistor. When the water temperature is lower than the first preset temperature, the coffee boiler heater and / or the brewing head heater are turned on until the water temperature reaches the first preset temperature. Then the coffee boiler heater and / or the brewing head heater are turned off.

2. The hot and cold coffee brewing system according to claim 1, characterized in that, The steam boiler is equipped with a steam boiler heater and an exchanger inside; the steam boiler heater is used to heat the water inside the steam boiler, and the water from the exchanger is injected into the coffee boiler; the steam boiler evaporator is installed outside or inside the steam boiler; the steam boiler evaporator is used to exchange heat with the water inside the steam boiler; a first thermistor is installed outside the steam boiler; the first thermistor is used to monitor the water temperature of the steam boiler.

3. The hot and cold coffee brewing system according to claim 2, characterized in that, The coffee boiler is equipped with a coffee boiler heater inside; the coffee boiler heater is used to heat the water inside the coffee boiler; the coffee boiler evaporator is installed outside or inside the coffee boiler; the coffee boiler evaporator is used to exchange heat with the water inside the coffee boiler; a second thermistor is installed outside the coffee boiler; the second thermistor is used to monitor the water temperature of the coffee boiler.

4. The hot and cold coffee brewing system according to claim 3, characterized in that, The brewing head includes a brewing head inlet pipe, a brewing head heater, a brewing head outlet pipe, and a pipe connector. A water inlet and a solenoid valve are provided on the first side of the pipe connector. The water inlet is connected to the outlet pipe of the coffee boiler. A third thermistor is provided on one side of the water inlet. The second side of the pipe connector, opposite to the first side, is connected to the brewing head inlet pipe and the brewing head outlet pipe, respectively. Water from the brewing head inlet pipe flows to the brewing head outlet pipe through the solenoid valve. A fourth thermistor is provided on the brewing head outlet pipe.

5. The hot and cold coffee brewing system according to claim 4, characterized in that, The refrigeration components include: a compressor, a condenser, a fan, refrigerant piping, a tee, a coffee boiler two-way valve, a coffee boiler capillary tube, a steam boiler two-way valve, and a steam boiler capillary tube; the compressor and condenser are connected by piping; the condenser is arranged around the fan; a refrigerant delivery piping extends from the condenser to a location near the coffee boiler and the steam boiler; the tee is connected to the refrigerant delivery piping, the coffee boiler two-way valve, and the steam boiler two-way valve respectively; the coffee boiler capillary tube is connected to the coffee boiler two-way valve and the coffee boiler evaporator respectively; the steam boiler capillary tube is connected to the steam boiler two-way valve and the steam boiler evaporator respectively.

6. The hot and cold coffee brewing system according to claim 5, characterized in that, When in cold extraction mode, the control chip is specifically used for: The compressor and fan are started. The compressor compresses the refrigerant and it enters the condenser. The fan cools the condenser and the refrigerant in the condenser enters the refrigerant delivery pipeline. Open the two-way valve of the coffee boiler. The refrigerant in the refrigerant delivery pipeline passes through the two-way valve of the coffee boiler and enters the capillary tube of the coffee boiler for throttling, and then flows into the evaporator of the coffee boiler. The coffee boiler evaporator exchanges heat with the room temperature water in the coffee boiler, and after heat exchange, the refrigerant flows back to the compressor to circulate and do work. The water temperature inside the coffee boiler is obtained through a second thermistor. When the water temperature reaches the second preset temperature, the two-way valve of the coffee boiler is closed and the two-way valve of the steam boiler is opened. The refrigerant in the refrigerant delivery pipeline enters the capillary tube of the steam boiler through the two-way valve of the steam boiler for throttling, and then flows into the steam boiler evaporator. The steam boiler evaporator exchanges heat with the water inside the steam boiler. After heat exchange, the refrigerant flows back to the compressor for circulation and work. The water temperature inside the steam boiler is obtained by the first thermistor. When the water temperature reaches the second preset temperature, the two-way valve of the steam boiler is closed, and the compressor and fan are controlled to stop running. When the water after heat exchange flows from the outlet pipe of the coffee boiler to the inlet of the pipe joint, the water temperature at the inlet is obtained through the third thermistor. When the water temperature is higher than the second preset temperature, the compressor and fan are controlled to start running. When the solenoid valve is activated, the water in the inlet pipe of the brewing head flows through the solenoid valve to the outlet pipe of the brewing head. The water temperature in the outlet pipe of the brewing head is obtained through the fourth thermistor. When the water temperature is higher than the second preset temperature, the compressor and fan are controlled to start running.

7. The hot and cold coffee brewing system according to claim 5, characterized in that, The system also includes a water tank, a vibrating pump, and a rotary pump; the vibrating pump delivers water from the water tank to the steam boiler, and the rotary pump delivers water from the water tank to the heat exchanger.

8. The hot and cold coffee brewing system according to claim 7, characterized in that, When switching from hot extraction mode to cold extraction mode, the control chip is also used for: Control the hot water output of steam boilers and coffee boilers; Turn on the vibration pump to pump the room temperature water from the water tank into the steam boiler, and at the same time turn on the rotary pump to pump the room temperature water from the water tank into the exchanger, and the room temperature water from the exchanger is injected into the coffee boiler. The water temperature of the steam boiler is obtained through a first thermistor, and the water temperature of the coffee boiler is obtained through a second thermistor. When both the water temperature in the steam boiler and the water temperature in the coffee boiler are lower than the third preset water temperature, the compressor and fan are started.

9. A coffee machine, characterized in that, include: The hot and cold coffee brewing system according to any one of claims 1-8.

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