Improved waterway structure of coffee machine

Abstract

The utility model relates to an improved waterway structure of a coffee machine, which is used for extracting coffee and comprises a cold water container, a steam source, an input tee joint, an output tee joint and an extraction output port. The cold water container is sequentially connected with a water pump and a heating piece; the heating piece and the steam source are respectively connected with the communicating end of the input tee joint; the pressure end of the input tee joint and the extraction control valve are respectively connected with the communicating end of the output tee joint, the steam source is connected with the pressure end of the output tee joint, and the extraction control valve is connected with the extraction output port. The pressure stabilizing device has the advantages of being beneficial to stabilizing the pressure of an extraction output port and being safe.

Description

TECHNICAL FIELD

[0001] The utility model relates to coffee machine technical field, especially the waterway improvement structure of extraction coffee machine. BACKGROUND

[0002] CN206995095U discloses a kind of coffee extraction device, including water tank, water pump, electric heating plate, bean grinder group, brewing device group and coffee outlet, the water tank is connected to water pump via waterway, the water pump is connected to electric heating plate via waterway, the electric heating plate is connected to brewing device group via waterway, the brewing device group is connected to coffee outlet via waterway, the bean grinder group is connected to brewing device group via discharge port.

[0003] CN115736638A discloses coffee extraction method and waterway system of bidirectional extraction coffee machine, and the waterway system of bidirectional extraction coffee machine includes water supply waterway and extraction waterway, and the extraction waterway includes coffee powder cavity, and is characterized by: the coffee powder cavity is configured with upper water inlet, lower water outlet, lower water inlet and upper water outlet, the upper water inlet and lower water inlet are connected with the water supply waterway, the upper water inlet and lower water outlet supply water from top to bottom and flow to extract, and the lower water inlet and upper water outlet supply water from bottom to top and flow to extract.

[0004] The prior art extraction coffee machine has room for improvement in extraction pressure stability and coffee preparation speed. UTILITY MODEL CONTENTS

[0005] One purpose of the utility model is to solve or alleviate the above technical problems.

[0006] The utility model takes the means for, the waterway improvement structure of coffee machine, it is used to extract coffee, including cold water container, steam source, input tee, output tee and extraction output port;Cold water container is sequentially connected with water pump and heating piece;Heating piece, steam source are connected with the communication end of input tee respectively;The pressure end of input tee, extraction control valve are connected with the communication end of output tee respectively, steam source is connected with the pressure end of output tee, and extraction control valve is connected with extraction output port.

[0007] The utility model reaches the effect that it is favorable to the pressure stability of extraction output port, and it is relatively safe.

[0008] Further technical solutions also include cold extraction pipeline and cold extraction control valve;Cold extraction control valve is tee valve and two ports are connected with water pump and heating piece respectively, and cold extraction pipeline is connected with another port of cold extraction control valve, input tee and pipeline between output tee.

[0009] Cold water in cold water container can be delivered to extraction output port without heating piece, which is conducive to the efficiency of extracting coffee.

[0010] Further technical solutions, the water pump is connected with a safety valve, the safety valve is connected to the cold water container.

[0011] The maximum pressure of the water pump can be limited, and safety is relatively high.

[0012] Further technical solutions, further comprising a hot water source and a hot water source control valve connected with the hot water source; the hot water source control valve is connected with a pipeline between the input three-way joint and the steam source.

[0013] The efficiency of extracting coffee is improved.

[0014] Further technical solutions, further comprising a backwater control valve and a backwater container; a pipeline between the steam source and the pressure end of the output three-way joint is a pressure maintaining pipeline, and the pressure maintaining pipeline and the backwater container are connected with the backwater control valve respectively.

[0015] Water in the pressure maintaining pipeline can be recycled, and equipment cleaning is facilitated.

[0016] Further technical solutions, the extraction control valve is a three-way valve, and two ports are connected with the communication end of the output three-way joint and the extraction output port respectively; the other port of the extraction control valve is connected with the backwater container.

[0017] Water between the extraction output port and the output three-way joint can be released according to needs.

[0018] Further technical solutions, a pressure sensor is connected between the output three-way joint and the input three-way joint.

[0019] Further technical solutions, a flow meter is connected between the water pump and the cold water container. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a schematic view of the waterway improvement structure of the coffee machine of the embodiment of the utility model.

[0021] The specification is designated in the drawing Figure 1 It is an abstract drawing.

[0022] The cold water container 1, the water pump 11, the flow meter 111, the safety valve 119, the heating part 12, the steam source 2, the steam source control valve 21, the extraction output port 3, the extraction control valve 31, the input three-way joint 32, the output three-way joint 33, the pressure maintaining pipeline 34, the pressure sensor 39, the cold extraction pipeline 4, the cold extraction control valve 41, the hot water source 8, the hot water source control valve 81, the backwater container 9 and the backwater control valve 91. DETAILED DESCRIPTION

[0023] The specific embodiment of the utility model will be described below by referring to the specification drawing.

[0024] As a specific embodiment, the water path improved structure of the coffee machine of the embodiment of the utility model is used for extracting coffee, which comprises a cold water container 1, a steam source 2, an input three-way pipe 32, an output three-way pipe 33 and an extraction output port 3.

[0025] The cold water container 1 is sequentially connected with a water pump 11 and a heating piece 12, in other words, the water pump 11 is arranged between the cold water container 1 and the heating piece 12. The heating piece 12 is a conventional structure capable of heating water flowing therethrough, so the heating piece 12 can be understood as a pipeline with a heating function.

[0026] The heating piece 12 and the steam source 2 are connected with the communication ends of the input three-way pipe 32. The steam source 2 outputs water vapor generated under the condition that water is boiled, which can be water vapor generated by the hot water source 8. The input three-way pipe 32 and the output three-way pipe 33 to be described later are both three-way pipelines with pressure in the prior art, in other words, the input three-way pipe 32 and the output three-way pipe 33 to be described later both have three interfaces of two communication ends and one pressure end. The pressure end is arranged between the two communication ends, and there is a certain pressure difference between the communication ends and the pressure end, so that water flow can pass through the pressure end.

[0027] The pressure end of the input three-way pipe 32 and the extraction control valve 31 are connected with the communication end of the output three-way pipe 33, the steam source 2 is connected with the pressure end of the output three-way pipe 33, and the extraction control valve 31 is connected with the extraction output port 3. It is easy to understand that the extraction control valve 31 and the steam source control valve 21 are in a closed state by default, but allow water vapor and / or water to pass through after being opened.

[0028] The working principle is that the water pump 11 is turned on, the water in the cold water container 1 flows through the water pump 11 and the heating piece 12, is heated and then is delivered to the communication end of the input three-way pipe 32, the water vapor of the steam source 2 is also delivered to the communication end of the input three-way pipe 32, and then the mixture of hot water and water vapor is output from the pressure end of the input three-way pipe 32, passes through the communication end of the input three-way pipe 32 and the extraction control valve 31 and is then output from the extraction output port 3 to extract a coffee cup (not shown in the drawing) containing coffee powder. In this process, only the pressure end of the output three-way pipe 33 bears the pressure transmitted by the pressure maintaining pipeline 34 of the steam source 2, and the pressure end of the output three-way pipe 33 is opened only when there is a pressure difference between the communication end of the output three-way pipe 33 and the pressure end of the output three-way pipe 33 (for example, greater than or equal to 3Bar), which is conducive to the stable pressure of the extraction output port 3 and is relatively safe.

[0029] As one of the specific embodiments, the cold extraction pipeline 4 and a cold extraction control valve 41 are further included; the cold extraction control valve 41 is a three-way valve, and two ports thereof are connected with the water pump 11 and the heating element 12 respectively. It is easily understood that the water pump 11 and the heating element 12 are connected through the cold extraction control valve 41, and the cold extraction pipeline 4 is connected with the other port of the cold extraction control valve 41 and the pipeline between the input three-way 32 and the output three-way 33. The cold water in the cold water container 1 can be delivered to the extraction output port 3 without passing through the heating element 12, which is beneficial to the efficiency of coffee extraction.

[0030] As one of the specific embodiments, the water pump 11 is connected with a safety valve 119, and the safety valve 119 is connected to the cold water container 1. The safety valve 119 is usually a spring safety valve, such as an 18Bar pair safety valve, which can limit the maximum pressure of the water pump 11 and is relatively safe.

[0031] As one of the specific embodiments, the hot water source 8 and a hot water source control valve 81 connected with the hot water source 8 are further included; the hot water source control valve 81 is connected with the pipeline between the input three-way 32 and the steam source 2. The hot water source 8 is an independent hot water source, in other words, the hot water source 8 is not heated by the heating element 12. After the hot water source control valve 81 is opened, hot water can be delivered to the communication end of the input three-way 32, which is beneficial to the efficiency of coffee extraction.

[0032] As one of the specific embodiments, the backwater control valve 91 and the backwater container 9 are further included; the pipeline between the steam source 2 and the pressure end of the output three-way 33 is a pressure maintaining pipeline 34, and the pressure maintaining pipeline 34 and the backwater container 9 are connected with the backwater control valve 91 respectively. After the backwater control valve 91 is opened, the water in the pressure maintaining pipeline 34 can be recycled, which is beneficial to ensuring the cleanliness of the equipment.

[0033] As one of the specific embodiments, the extraction control valve 31 is a three-way valve, and two ports thereof are connected with the communication end of the output three-way 33 and the extraction output port 3 respectively; the other port of the extraction control valve 31 is connected with the backwater container 9. The water between the extraction output port 3 and the output three-way 33 can be released as needed.

[0034] It is easily understood that the cold extraction control valve 41, the hot water source control valve 81, the steam source control valve 21, the extraction control valve 31 and the backwater control valve 91 are usually electric valves, and the control of the electric valves by the master control board and other conventional electric control means is prior art, so the control of the electric valves will not be described herein.

[0035] As one of the specific embodiments, the pressure sensor 39 is connected between the output three-way 33 and the input three-way 32.

[0036] As one of the specific embodiments, the water pump 11 and the cold water container 1 are connected with a flow meter 111. It is easy to understand that the pressure sensor 39 and the flow meter 111 are respectively electrically connected with the main control board and the like, and transmit the electrical signals to the main control board and the like, and then displayed on the display panel of the coffee machine as the prior art.

[0037] As used in the present utility model, the terms "first", "second", and the like, do not denote any order, quantity or importance, but are only used for distinction.

[0038] As used in the present utility model, the terms "one", "a", and the like, do not denote a limitation on the quantity, but denote the existence of at least one mentioned object.

[0039] As used in the present utility model, the terms indicating direction or position, such as "top", "bottom", "side", "longitudinal", "transverse", "middle", "center", "outer", "inner", "horizontal", "vertical", "left", "right", "upper", "lower", and the like, mean reflecting relative position, not absolute position.

[0040] As used in the present utility model, the terms "approximately", "entirely", "approximately", "similarly", and the like, are used as limiting terms to indicate the existence of characteristics but allow certain deviations. The amount of allowable deviation can vary depending on the specific context; for example, the deviation for size can depend on the specific context, including but not limited to the relevant standards for dimensional tolerance.

Claims

1. A water path improvement structure of a coffee machine for extracting coffee, comprising a cold water container (1), a steam source (2), an input three-way joint (32), an output three-way joint (33) and an extraction outlet (3); the cold water container (1) is connected with a water pump (11) and a heating element (12) in sequence. characterized in that The heating element (12) and the steam source (2) are connected with the communication end of the input three-way joint (32) respectively; the pressure end of the input three-way joint (32) and an extraction control valve (31) are connected with the communication end of the output three-way joint (33) respectively, the steam source (2) is connected with the pressure end of the output three-way joint (33), and the extraction control valve (31) is connected with the extraction outlet (3).

2. The waterway improvement for a coffee maker according to claim 1, characterized in that, Further comprising a cold extraction pipeline (4) and a cold extraction control valve (41); the cold extraction control valve (41) is a three-way valve and two ports thereof are connected with the water pump (11) and the heating element (12) respectively, and the cold extraction pipeline (4) is connected with the other port of the cold extraction control valve (41) and the pipeline between the input three-way joint (32) and the output three-way joint (33) respectively.

3. In a coffee maker as defined in claim 2, the improvement wherein, The water pump (11) is connected with a safety valve (119), and the safety valve (119) is connected to the cold water container (1).

4. The waterway improvement for a coffee maker according to claim 1, wherein Further comprising a hot water source (8) and a hot water source control valve (81) connected with the hot water source (8); the hot water source control valve (81) is connected with the pipeline between the input three-way joint (32) and the steam source (2).

5. The waterway improvement for a coffee maker according to claim 1, wherein Further comprising a backwater control valve (91) and a backwater container (9); the pipeline between the steam source (2) and the pressure end of the output three-way joint (33) is a pressure maintaining pipeline (34), and the pressure maintaining pipeline (34) and the backwater container (9) are connected with the backwater control valve (91) respectively.

6. In a coffee maker as defined in claim 5, the improvement wherein, The extraction control valve (31) is a three-way valve and two ports thereof are connected with the communication end of the output three-way joint (33) and the extraction outlet (3) respectively; the other port of the extraction control valve (31) is connected with the backwater container (9).

7. The waterway improvement for a coffee maker according to claim 1, wherein The pressure sensor (39) is connected between the output three-way joint (33) and the input three-way joint (32).

8. The waterway improvement for a coffee maker according to claim 1, wherein The flow meter (111) is connected between the water pump (11) and the cold water container (1).

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