Desktop coffee machine

Abstract

The utility model discloses a desktop coffee machine, which relates to the field of coffee extraction equipment and comprises a coffee machine, the coffee machine comprises a touch screen, a heat exchange system, a coffee extraction system and a temperature adjusting system, the heat exchange system comprises a coffee pipeline and a hot water pipeline, and the coffee extraction system comprises a coffee tank, a material pump and a discharge port. A lower outlet of the coffee can is connected with an inlet of the material pump through a pipeline, an outlet of the material pump is communicated with one end of the coffee pipeline, and the other end of the coffee pipeline is connected with an upper inlet of the coffee can and a discharging port. The temperature adjusting system comprises a hot water tank and a hot water pump, the hot water tank is provided with a steam outlet and a hot water inlet, the steam outlet is connected with an inlet of the hot water pump through a hot water pipeline, and the hot water inlet is connected with an outlet of the hot water pump through a pipeline. By the adoption of the structure, continuous variable-temperature extraction of coffee is achieved, and the problems that the water temperature of brewed coffee of a small coffee machine is difficult to adjust and control, the taste of coffee extraction is affected, and continuous production cannot be achieved are solved.

Description

Technical Field

[0001] The utility model relates to the field of coffee extraction equipment, in particular to a desktop coffee machine. Background Art

[0002] A coffee machine is a general term for coffee brewing machines. It is a machine that integrates the entire process of brewing coffee, including grinding, pressing, filling, brewing, and removing residues. Brewing coffee has precise requirements for water temperature. If the water temperature is too high, the brewed coffee will be a cup of bitter water with a burnt taste. If the water temperature is too low, the taste of the coffee cannot be reflected, so the control of water temperature is very important.

[0003] Ordinary household coffee machines have a single boiler and a set of heaters to heat the water temperature for brewing coffee. Metal seamless pipes that penetrate the boiler horizontally or vertically are used for heat alternation, thereby achieving the purpose of heating the water temperature for brewing coffee. However, because coffee has high requirements for brewing water temperature, the water temperature of ordinary coffee machines varies greatly after the hot water leaves the boiler. When brewing coffee continuously for a long time, the water temperature will drop rapidly, which can easily affect the flavor of the coffee. The working principle of commercial coffee machines with double boilers is that one sub-boiler is responsible for providing hot water for brewing coffee, and the other is responsible for producing steam as a main boiler, thereby improving the ability to produce products continuously. Existing double-boiler coffee machines generally embed the sub-boiler into the main boiler for heat exchange, so the general commercial coffee machine is larger in size and occupies more space. Therefore, in existing equipment, it is difficult to achieve a coffee machine that is both compact and exquisite and takes into account the brewing water temperature.

[0004] Therefore, it is necessary to provide a desktop coffee machine to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a desktop coffee machine, which can realize continuous temperature-variable extraction of coffee with low space occupancy, solve the problem that small coffee machines are difficult to control the water temperature for brewing coffee, which affects the taste of coffee extraction and cannot realize continuous production.

[0006] To achieve the above object, the utility model provides a desktop coffee machine, comprising a coffee machine, wherein the coffee machine comprises a touch screen, a heat exchange system, a coffee extraction system and a temperature control system, wherein the touch screen is electrically connected to the temperature control system and the coffee extraction system;

[0007] The heat exchange system includes a plurality of liquid-conducting pipes, wherein the liquid-conducting pipes are divided into coffee pipes and hot water pipes. The coffee pipes are connected to the coffee extraction system, and the hot water pipes are connected to the temperature control system.

[0008] The coffee extraction system comprises a coffee pot, a material pump and a material outlet, the coffee pot is provided with a lower outlet and an upper inlet, the lower outlet is connected to the inlet of the material pump through a pipeline, the outlet of the material pump is connected to one end of the coffee pipeline, and the other end of the coffee pipeline is connected to the upper inlet and the material outlet;

[0009] The temperature control system includes a hot water tank and a hot water pump. The hot water tank is provided with a steam outlet and a hot water inlet. The steam outlet is connected to the inlet of the hot water pump through the hot water pipe, and the hot water inlet is connected to the outlet of the hot water pump through a pipe.

[0010] Preferably, the pipe diameter of the hot water pipe is larger than the pipe diameter of the coffee pipe, the hot water pipe is only arranged inside the coffee machine, the coffee pipe is distributed inside and outside the body of the coffee machine, the internal coffee pipe is connected with the external coffee pipe, and part of the internal coffee pipe runs through the hot water pipe, which is consistent with the path of the hot water pipe.

[0011] Preferably, a first ball valve and a second ball valve are respectively provided at the coffee conduit at the upper inlet of the coffee can and the coffee conduit at the discharge port.

[0012] Preferably, thermal insulation cotton is provided on the inner wall of the coffee machine.

[0013] Preferably, a temperature-resistant pressure gauge is provided above the hot water tank, and a temperature sensor is provided below the hot water tank.

[0014] Preferably, the coffee pipe is provided with a temperature display.

[0015] Therefore, the present invention adopts the above desktop coffee machine, which has the following beneficial effects:

[0016] (1) The utility model uses a touch screen to adjust the production parameters of the temperature control system, and uses a temperature-resistant pressure gauge and a temperature sensor to adjust the internal water temperature. The temperature in the hot water tank continues to rise, thereby solving the problem that the water temperature changes greatly after the hot water leaves the boiler, and the water temperature drops rapidly when brewing coffee continuously for a long time, thereby realizing continuous temperature-variable extraction of coffee and improving the extraction efficiency of coffee.

[0017] (2) The utility model utilizes pipes for heat exchange between hot water and coffee extract, thereby meeting the heat exchange requirements of the mother-and-child coffee machine, but avoiding the problem of high space occupancy. Therefore, the desktop coffee machine can be used in more occasions, meeting both the requirements of being compact for home use and the requirements of continuous production for commercial use.

[0018] (3) The utility model utilizes the first ball valve and the second ball valve to achieve the function of different extraction times for different types of coffee, thereby ensuring the taste of the coffee.

[0019] The technical solution of the utility model is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is an overall schematic diagram of a desktop coffee machine of the utility model;

[0021] Figure 2 It is a rear side cross-sectional schematic diagram of a desktop coffee machine of the utility model;

[0022] Figure 3 It is a left side cross-sectional schematic diagram of a desktop coffee machine of the utility model;

[0023] Reference numerals:

[0024] 1. Coffee machine; 2. Touch screen; 3. Coffee can; 31. Upper inlet; 32. Lower outlet; 4. Hot water tank; 41. Steam outlet; 42. Hot water inlet; 5. Coffee pipeline; 6. First ball valve; 7. Second ball valve; 8. Discharge port; 9. Hot water pipeline; 10. Temperature display; 11. Hot water pump; 12. Material pump; 13. Temperature-resistant pressure gauge; 14. Temperature sensor. DETAILED DESCRIPTION

[0025] The technical solution of the utility model is further described below through the accompanying drawings and embodiments.

[0026] Unless otherwise defined, technical or scientific terms used in the present invention should have the common meanings understood by persons having ordinary skills in the field to which the present invention belongs.

[0027] The words "include" or "comprises" and the like used in the present invention mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of also including other elements. The orientation or position relationship indicated by the terms "inside", "outside", "upper", "lower", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. When the absolute position of the described object changes, the relative position relationship may also change accordingly. In the present invention, unless otherwise clearly specified and limited, the terms "attachment" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral body; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0028] like Figures 1 to 3 As shown, the utility model provides a desktop coffee machine, including a coffee machine 1, the coffee machine 1 includes a touch screen 2, a heat exchange system, a coffee extraction system and a temperature control system, the touch screen 2 is electrically connected to the temperature control system and the coffee extraction system, the touch screen 2 can preset the temperature and pressure, and monitor and adjust the pressure and temperature inside the temperature control system, and can monitor the working cycle of the coffee extraction system.

[0029] The heat exchange system includes a plurality of liquid conducting pipes, which are divided into a coffee pipe 5 and a hot water pipe 9. The coffee pipe 5 is connected to the coffee extraction system, and the hot water pipe 9 is connected to the temperature control system.

[0030] The coffee extraction system includes a coffee can 3, a material pump 12 and a discharge port 8. Hot water and coffee powder are put into the coffee can 3 in advance. The coffee can 3 is provided with a lower outlet 32 ​​and an upper inlet 31. The lower outlet 32 ​​is connected to the inlet of the material pump 12 through a pipeline. After the extraction liquid in the coffee can 3 is initially soaked, it will flow into the material pump 12 through the pipeline. The outlet of the material pump 12 is connected to one end of the coffee pipeline 5. The other end of the coffee pipeline 5 is connected to the upper inlet 31 and the discharge port 8. The coffee pipeline 5 is a one-way trip, which only refers to the pipeline from the material pump 12 to the coffee can 3 and the discharge port 8. After passing through the material pump 12, it is re-pumped into the coffee can 3 through the coffee pipeline 5 or discharged from the discharge port 8.

[0031] The temperature control system includes a hot water tank 4 and a hot water pump 11. The hot water tank 4 is provided with a steam outlet 41 and a hot water inlet 42. The hot water tank 4 continuously heats the internal liquid according to the production parameters of the touch screen 2, and the internal pressure is monitored by a temperature-resistant pressure gauge 13. The liquid at the bottom of the hot water tank 4 is monitored by a temperature sensor 14.

[0032] The steam outlet 41 is connected to the inlet of the hot water pump 11 through the hot water pipe 9. The hot water pipe 9 is one-way and only refers to the pipe part from the steam outlet 41 to the hot water pump 11. The hot water inlet 42 is connected to the outlet pipe of the hot water pump 11. The liquid in the hot water tank 4 is heated to form steam, which is discharged from the steam outlet 41 to the hot water pipe 9. After heat exchange between the hot water pipe 9 and the coffee pipe 5, it is reformed into liquid and is pumped back into the hot water tank 4 after passing through the hot water pump 11.

[0033] The pipe diameter of the hot water pipe 9 is larger than the pipe diameter of the coffee pipe 5, and the hot water pipe 9 is only arranged inside the coffee machine 1. In order to ensure that the heat in the hot water pipe 9 is not lost, a heat insulation cotton is arranged on the inner wall of the coffee machine 1.

[0034] The coffee pipe 5 is distributed inside and outside the body of the coffee machine 1. The coffee pipe 5 inside the body is connected to the coffee pipe 5 outside the body. The internal coffee pipe 5 runs through the hot water pipe 9, and the two are sleeved. The coffee pipe 5 is arranged inside the hot water pipe 9. The steam transfers heat to the coffee pipe 5 in the hot water pipe 9, and the coffee extract in the coffee pipe 5 is heated. The path of this part of the coffee pipe 5 is consistent with that of the hot water pipe 9, and the heat exchange time is extended as much as possible. After the heat exchange is completed, the temperature display 10 at the coffee pipe 5 performs the initial temperature test on the coffee extract inside.

[0035] The coffee pipe 5 at the upper inlet 31 of the coffee tank 3 and the coffee pipe 5 at the discharge port 8 are respectively provided with a first ball valve 6 and a second ball valve 7. When the coffee extract does not meet the tasting requirements, the second ball valve 7 is closed and the first ball valve 6 is opened to allow the coffee extract to undergo a circulation heating extraction of the coffee tank 3-material pump 12-coffee pipe 5-material tank 3. When the requirements are met, the first ball valve 6 is closed and the second ball valve 7 is opened to allow the coffee extract to flow out from the discharge port 8.

[0036] Therefore, the utility model adopts the above-mentioned desktop coffee machine to achieve continuous variable temperature extraction of coffee with low space occupancy, and solves the problem that small coffee machines are difficult to control the water temperature for brewing coffee, which affects the taste of coffee extraction and cannot achieve continuous production.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that they can still modify or replace the technical solution of the utility model with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the utility model.

Claims

1. A desktop coffee machine, characterized in that: A coffee machine is provided, wherein the coffee machine comprises a touch screen, a heat exchange system, a coffee extraction system and a temperature control system, wherein the touch screen is electrically connected to the temperature control system and the coffee extraction system; The heat exchange system includes a plurality of liquid-conducting pipes, wherein the liquid-conducting pipes are divided into coffee pipes and hot water pipes. The coffee pipes are connected to the coffee extraction system, and the hot water pipes are connected to the temperature control system. The coffee extraction system comprises a coffee pot, a material pump and a material outlet, the coffee pot is provided with a lower outlet and an upper inlet, the lower outlet is connected to the inlet of the material pump through a pipeline, the outlet of the material pump is connected to one end of the coffee pipeline, and the other end of the coffee pipeline is connected to the upper inlet and the material outlet; The temperature control system includes a hot water tank and a hot water pump. The hot water tank is provided with a steam outlet and a hot water inlet. The steam outlet is connected to the inlet of the hot water pump through the hot water pipe, and the hot water inlet is connected to the outlet of the hot water pump through a pipe.

2. A desktop coffee machine according to claim 1, characterized in that: The pipe diameter of the hot water pipe is larger than the pipe diameter of the coffee pipe. The hot water pipe is only arranged inside the coffee machine. The coffee pipe is distributed inside and outside the body of the coffee machine. The internal coffee pipe is connected with the external coffee pipe. Part of the internal coffee pipe runs through the hot water pipe and has the same path as the hot water pipe.

3. A desktop coffee machine according to claim 1, characterized in that: A first ball valve and a second ball valve are respectively provided at the coffee conduit at the upper inlet of the coffee can and the coffee conduit at the discharge port.

4. The desktop coffee machine according to claim 1, characterized in that: The inner wall of the coffee machine is provided with heat-insulating cotton.

5. A desktop coffee machine according to claim 4, characterized in that: A temperature-resistant pressure gauge is arranged above the hot water tank, and a temperature sensor is arranged below the hot water tank.

6. A desktop coffee machine according to claim 4, characterized in that: The coffee pipe is provided with a temperature display.

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