Waterway structure of coffee machine

Abstract

The waterway structure of the coffee machine comprises a water supply waterway, a hot water waterway and a steam waterway, the water supply waterway is respectively communicated with the hot water waterway and the steam waterway through a three-way electromagnetic valve, an outlet of the water supply waterway is communicated with an inlet of the three-way electromagnetic valve, and an inlet of the hot water waterway is communicated with a first outlet of the three-way electromagnetic valve. An inlet of the steam waterway is communicated with a second outlet of the three-way electromagnetic valve, an outlet of the steam waterway is provided with a switch valve and a milk foam assembly, the switch valve is opened to release steam to enter the milk foam assembly when the milk foam assembly is inserted, and the switch valve is closed to prevent the steam from being released when the milk foam assembly is pulled away. The switch valve is arranged at the outlet of the steam water way, the switch valve is opened to release steam when the milk foam assembly is inserted, the switch valve is closed to prevent the steam from being released when the milk foam assembly is pulled away, and the situation that when the milk foam assembly is accidentally disengaged, the released steam is sprayed out to cause danger to a user is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of beverage machines, in particular to a water channel structure of a coffee machine. Background Art

[0002] As the coffee drinking experience continues to improve, people are accustomed to adding milk foam to brewed coffee. Therefore, the function of brewing coffee and making milk foam has become the mainstream function configuration of current coffee machines.

[0003] In order to better achieve the above functions, coffee machines often have a brewing water circuit for producing hot water for brewing coffee and a steam water circuit for producing steam for making milk froth separately, so that brewing coffee and making milk froth can be carried out simultaneously without affecting each other.

[0004] CN216854445U discloses a water system of a coffee machine, including: a water tank, a water pump assembly, a coffee boiler, a coffee brewing funnel, a steam boiler, a milk emulsification system and a control valve; the water pump assembly is connected to the water tank; the coffee boiler is connected to the water pump assembly; the water inlet of the coffee brewing funnel is connected to the first water outlet of the coffee boiler; the water inlet of the steam boiler is connected to the second water outlet of the coffee boiler; the steam inlet of the milk emulsification system is connected to the steam outlet of the steam boiler; the control valve is connected between the steam outlet of the steam boiler and the steam inlet of the milk emulsification system. In this technical solution, the release of steam is controlled by setting a control valve between the outlet of the steam pipeline and the milk foam assembly. When the milk foam assembly is accidentally detached, the released steam sprays out and causes danger to the user. Utility Model Content

[0005] The utility model aims to provide a water channel structure of a coffee machine, which solves the problem that when a control valve is arranged between the outlet of the steam pipeline and the milk frothing component to control the release of steam, the released steam sprays out and causes danger to the user when the milk frothing component is accidentally detached, so as to overcome the shortcomings of the prior art.

[0006] The utility model provides a water circuit structure of a coffee machine through the following technical scheme, comprising a water supply circuit, a hot water circuit and a steam circuit, wherein the water supply circuit is respectively connected with the hot water circuit and the steam circuit through a three-way solenoid valve, the outlet of the water supply circuit is communicated with the inlet of the three-way solenoid valve, the inlet of the hot water circuit is communicated with the first outlet of the three-way solenoid valve, the outlet of the hot water circuit is provided with a brewing component, the inlet of the steam circuit is communicated with the second outlet of the three-way solenoid valve, the outlet of the steam circuit is provided with a switch valve and a milk frothing component, when the milk frothing component is plugged in, the switch valve is opened to release steam to enter the milk frothing component, and when the milk frothing component is pulled out, the switch valve is closed to prevent the steam from being released.

[0007] Furthermore, a pressure limiting valve is provided between the hot water boiler and the brewing component of the hot water pipeline.

[0008] Furthermore, the water supply circuit includes a water tank, a flow meter, a water pump and a protection valve connected in sequence.

[0009] The utility model has the following beneficial effects: a switch valve is arranged at the outlet of the steam water path, and when the milk froth component is plugged in, the switch valve is opened to release the steam, and when the milk froth component is pulled out, the switch valve is closed to prevent the steam from being released, thereby avoiding the danger to the user caused by the released steam when the milk froth component is accidentally detached. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the water channel structure of a coffee machine described in the utility model.

[0011] in, Figure 1 The corresponding relationship between the reference numerals and component names in the figure is:

[0012] 1 Water supply circuit, 2 Hot water circuit, 3 Steam circuit, 4 Three-way solenoid valve, 5 Brewing component, 6 Switch valve, 7 Milk frothing component, 8 Hot water boiler, 9 Pressure limiting valve, 10 Hot water tank, 11 Water pump, 12 Flow meter, 13 Protection valve, 14 Steam boiler. DETAILED DESCRIPTION

[0013] The technical solution of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0014] The components of the embodiments of the present application generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed, but merely represents the selected embodiments of the present application.

[0015] Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of this application.

[0016] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying 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 limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0017] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0018] Refer to the following Figure 1 A water channel structure of a coffee machine according to some embodiments of the present application is described.

[0019] A water channel structure of a coffee machine includes a water supply channel 1, a hot water channel 2 and a steam channel 3. The water supply channel 1 is connected to the hot water channel 2 and the steam channel 3 respectively through a three-way solenoid valve 4. The outlet of the water supply channel 1 is connected to the inlet of the three-way solenoid valve 4, the inlet of the hot water channel 2 is connected to the first outlet of the three-way solenoid valve 4, the outlet of the hot water channel 2 is provided with a brewing component 5, the inlet of the steam water channel 3 is connected to the second outlet of the three-way solenoid valve 4, and the outlet of the steam water channel 3 is provided with a switch valve 6 and a milk frothing component 7.

[0020] The water supply circuit 1 comprises a water tank 10 , a flow meter 12 , a water pump 11 and a protection valve 13 which are connected in sequence.

[0021] When it is necessary to make coffee, the three-way solenoid valve 4 opens the first outlet and closes the second outlet. The water pump 11 and the flow meter 12 work together to extract the water required for brewing from the water tank 10 and enter the hot water waterway 2. The water entering the hot water waterway 2 is heated by the hot water boiler 8 and then output to the brewing component 5 for coffee extraction and brewing. When the water supply waterway is abnormal and the pressure is too high, the protection valve 13 opens to release the pressure and return to the water tank to protect the normal operation of each waterway.

[0022] When it is necessary to make milk foam, the three-way solenoid valve 4 closes the first outlet and opens the second outlet, and the water pump 11 and the flow meter 12 work together to draw the water required for making milk foam from the water tank 10 and enter the steam water path 3. The water entering the steam water path 3 is heated into steam by the steam boiler 14 and then output to the milk foam component 7 for making milk foam.

[0023] In order to store the milk used by the milk frothing component 7, the milk frothing component 7 is detachable. It is connected to the coffee machine when making milk froth, and is removed from the coffee machine and stored in the refrigerator after making. Through the switch valve 6 provided at the outlet of the steam waterway 3, when the milk frothing component 7 is plugged into the outlet of the steam waterway 3, the switch valve 6 is opened, the milk frothing component 7 is connected to the steam waterway 3, and the steam is released into the milk frothing component 7; when the milk frothing component 7 is pulled out of the outlet of the steam waterway 3, the switch valve 6 is closed, and the steam in the steam waterway 3 can no longer be released to the outside. In this way, whether the milk frothing component 7 is accidentally separated from the coffee machine during operation, or the milk froth is made normally, the steam in the steam waterway 3 cannot be released to the outside, thereby ensuring the safety of the user.

[0024] In addition, a pressure limiting valve 9 is provided between the hot water boiler 8 of the hot water pipeline 2 and the brewing component 5. The hot water in the hot water pipeline 2 needs to accumulate to a relatively high pressure before it can break through the pressure limiting valve 9 and enter the brewing component 5. The hot water with a relatively high pressure can improve the coffee extraction effect. Preferably, when the opening pressure of the pressure limiting valve 9 is 7-8kgf, the coffee extraction effect is better. The pressure limiting valve 9 can be an independent component or integrated with other components. In the present technical solution, the pressure limiting valve 9 is integrated at the entrance of the brewing component 5.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A water channel structure of a coffee machine, comprising a water supply channel, a hot water channel and a steam channel, wherein the water supply channel is connected to the hot water channel and the steam channel respectively through a three-way solenoid valve, characterized in that: The outlet of the water supply circuit is connected with the inlet of the three-way solenoid valve, the inlet of the hot water circuit is connected with the first outlet of the three-way solenoid valve, the outlet of the hot water circuit is provided with a brewing component, the inlet of the steam water circuit is connected with the second outlet of the three-way solenoid valve, the outlet of the steam water circuit is provided with a switch valve and a milk froth component, when the milk froth component is plugged in, the switch valve opens to release steam into the milk froth component, and when the milk froth component is pulled out, the switch valve closes to prevent steam from being released.

2. The water channel structure of a coffee machine according to claim 1, characterized in that: A pressure limiting valve is provided between the hot water boiler and the brewing component of the hot water pipeline.

3. The water channel structure of a coffee machine according to claim 1, characterized in that: The water supply circuit comprises a water tank, a flow meter, a water pump and a protection valve which are connected in sequence.

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