Water supply device of coffee machine

Abstract

The utility model discloses a water supply device of a coffee machine. A hot water pipeline penetrates through a heating block; the waterway runner system is arranged on the side edge of the heating block; the water channel comprises a water inlet valve, a water outlet valve and a cavity. The water inlet valve and the water outlet valve are arranged on the cavity; the water outlet valve is communicated with the hot water pipeline; the water inlet valve is communicated with the water inlet; water enters the cavity through the water inlet valve in a one-way mode and then enters the hot water pipeline from the cavity through the water outlet valve in a one-way mode. The cam shaft is arranged on the side surface of the heating block; an oval annular guide rail surrounds the side face of the cam shaft. The annular guide rail is not perpendicular to the cam shaft; the sliding block moves along the annular guide rail; one end of the piston assembly is connected with the sliding block, and the other end is connected with the cavity; a plurality of sliding blocks are arranged; a plurality of piston assemblies are arranged; the number of the piston assemblies is the same as that of the sliding blocks. The number of the piston assemblies is the same as that of the cavities. When the cam shaft rotates, the multiple piston assemblies alternately drive water in the corresponding cavities to flow in and out.

Description

Technical Field

[0001] The utility model relates to the technical field of coffee machines, in particular to a water supply device for a coffee machine. Background Art

[0002] The existing water supply device for extracting coffee liquid cannot control the flow rate and velocity of the water path. It is directly connected to an external hot water pipe. The flow rate and velocity of the water in the hot water pipe will be directly reflected by the extraction head during coffee liquid extraction. Since the flow rate and velocity of the water cannot be controlled, the amount of coffee extraction liquid cannot be controlled, especially it is impossible to ensure the uniform and uninterrupted flow of water in the hot water pipe. This affects the coffee extraction effect, and the poor extraction effect will seriously affect the taste of the coffee liquid.

[0003] How to solve the above technical problems has become an urgent technical problem in the industry. Summary of the Invention

[0004] In order to solve at least the above technical problems, the purpose of the utility model is to provide a water supply device for a coffee machine, which realizes the control of hot water during coffee liquid extraction.

[0005] To achieve the above purpose, the water supply device for a coffee machine provided by the utility model includes: a heating block; a hot water pipe passing through the heating block; a water path flow channel system arranged on the side of the heating block; the water path flow channel system includes a plurality of water path flow channels; each water path flow channel includes an inlet valve, an outlet valve and a chamber; both the inlet valve and the outlet valve are arranged on the chamber; the outlet valve is communicated with the hot water pipe; the inlet valve is communicated with the water inlet; water passes through the inlet valve into the chamber unidirectionally, and then passes through the outlet valve into the hot water pipe from the chamber unidirectionally; a camshaft arranged on the side of the heating block; an oval annular guide rail is surrounded on the side of the camshaft; the annular guide rail is not perpendicular to the camshaft; a slider arranged in the annular guide rail and moving along the annular guide rail; a piston assembly, one end of which is connected to the slider and the other end is connected to the chamber; there are a plurality of sliders; there are a plurality of piston assemblies; the number of piston assemblies is the same as the number of sliders; the number of piston assemblies is the same as the number of chambers; when the camshaft rotates, a plurality of piston assemblies alternately drive the water in their corresponding chambers to flow in and out.

[0006] Further, the piston assembly includes: a piston, which includes a piston head and a piston rod; one end of the piston rod is fixedly connected to the piston head, and the other end of the piston rod is connected to the slider.

[0007] Further, the piston assembly further includes: a fixing block, one side of which is fixedly connected to the slider; the other end of the piston rod passes through the fixing block and is connected to the slider.

[0008] Further, the piston assembly further includes: a fixing rod, one end of the fixing rod is fixedly connected to the heating block; a fixing block is sleeved on the fixing rod; the fixing block moves along the longitudinal direction of the fixing rod.

[0009] Further, the hot water pipe runs through the heating block in a continuous S shape.

[0010] Further, the heating block further includes: heating rods, and the heating rods are evenly distributed around the hot water pipe.

[0011] Further, the hot water pipe is provided with a water outlet; the water outlet is arranged outside the heating block; a pressure sensor is provided at the water outlet.

[0012] Further, it further includes: a driving motor; the camshaft is cylindrical, and a transmission wheel is provided at one end of the cylindrical camshaft; the driving motor drives the camshaft through the transmission wheel.

[0013] Further, it further includes: a driving module for controlling the operating frequency of the driving motor.

[0014] The coffee machine water supply device of the embodiment of the present application includes: a heating block; a hot water pipe, the hot water pipe runs through the heating block; a water flow channel system is arranged on the side of the heating block; the water flow channel system includes a plurality of water flow channels; the water flow channel includes an inlet valve, an outlet valve and a chamber; both the inlet valve and the outlet valve are arranged on the chamber; the outlet valve is communicated with the hot water pipe; the inlet valve is communicated with the water inlet; water enters the chamber unidirectionally through the inlet valve, and then enters the hot water pipe from the chamber unidirectionally through the outlet valve; the camshaft is arranged on the side of the heating block; an elliptical annular guide rail is wound around the side of the camshaft; the annular guide rail is not perpendicular to the camshaft; a slider is arranged in the annular guide rail, and the slider moves along the annular guide rail; a piston assembly, one end of which is connected to the slider and the other end is connected to the chamber; there are a plurality of sliders; there are a plurality of piston assemblies; the number of piston assemblies is the same as the number of sliders; the number of piston assemblies is the same as the number of chambers; when the camshaft rotates, a plurality of piston assemblies alternately drive the water in their corresponding chambers to flow in and out. Through the cooperation of the piston and the water flow channel, the controllability of the water flow in the hot water pipe is realized; through the alternating cooperation of the double pistons and the double chambers, the replenishment of water in the hot water pipe is more uniform and stable, thereby ensuring the uniformity and stability of the hot water during coffee liquid extraction; the continuous S-shaped arrangement of the hot water pipe in the heating block, and the uniform distribution of the heating rods around the hot water pipe make the water temperature more uniform and stable, with higher heating efficiency and controllable temperature, greatly ensuring the water temperature requirements during coffee liquid extraction, ensuring the taste of the coffee liquid, and enhancing the market competitiveness. Description of the Drawings

[0015] The accompanying drawings are used to provide a further understanding of the present application, and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation to the present application. In the accompanying drawings:

[0016] Figure 1 is a schematic structural view of the water supply device of the coffee machine according to an embodiment of the present application;

[0017] Figure 2 is a schematic structural view of the camshaft according to an embodiment of the present application;

[0018] Figure 3 is a schematic cross-sectional view of the waterway flow channel assembly and the waterway valve group when they are matched according to an embodiment of the present application.

[0019] Explanation of reference numerals:

[0020] 101 - heating block; 102 - heating rod; 103 - waterway flow channel assembly; 104 - waterway valve group; 105 - camshaft; 106 - second piston; 107 - first piston; 108 - drive motor; 109 - drive module; 201 - fixing block; 202 - slider; 203 - annular guide rail; 204 - fixing rod; 301 - water inlet; 302 - first water outlet valve; 303 - first water inlet valve; 304 - second water inlet valve; 305 - second water outlet valve; 306 - first chamber; 307 - second chamber; 308 - pressure sensor; 309 - water outlet. Detailed implementation manners

[0021] The embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although some embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. On the contrary, these embodiments are provided to more thoroughly and completely understand the present application. It should be understood that the drawings and embodiments of the present application are only for exemplary purposes and are not used to limit the protection scope of the present application.

[0022] It should be understood that the various steps recorded in the method embodiments of the present application can be executed in a different order and / or executed in parallel. In addition, the method embodiments may include additional steps and / or omit the steps shown. The scope of the present application is not limited in this regard.

[0023] As used herein, the term "including" and its variants are open-ended, that is, "including but not limited to". The term "based on" is "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". The relevant definitions of other terms will be given in the following description.

[0024] It should be noted that the modifications of "one" and "multiple" mentioned in this application are illustrative rather than restrictive. Those skilled in the art should understand that unless otherwise clearly specified in the context, it should be understood as "one or more". "Multiple" should be understood as two or more.

[0025] Next, the embodiments of the present application will be described in detail with reference to the accompanying drawings.

[0026] The coffee machine water supply device provided by the embodiment of the present utility model includes: a heating block; a hot water pipe, the hot water pipe penetrates through the heating block; a water flow channel system, arranged on the side of the heating block; the water flow channel system includes a plurality of water flow channels; each water flow channel includes a water inlet valve, a water outlet valve and a chamber; both the water inlet valve and the water outlet valve are arranged on the chamber; the water outlet valve is communicated with the hot water pipe; the water inlet valve is communicated with the water inlet; water passes through the water inlet valve into the chamber unidirectionally, and then passes through the water outlet valve from the chamber into the hot water pipe unidirectionally; a camshaft, arranged on the side of the heating block; an elliptical annular guide rail is arranged around the side of the camshaft; the annular guide rail is not perpendicular to the camshaft; a slider, arranged in the annular guide rail, and the slider moves along the annular guide rail; a piston assembly, one end of which is connected to the slider and the other end is connected to the chamber; there are a plurality of sliders; there are a plurality of piston assemblies; the number of piston assemblies is the same as the number of sliders; the number of piston assemblies is the same as the number of chambers; when the camshaft rotates, a plurality of piston assemblies alternately drive the water in their corresponding chambers to flow in and out.

[0027] Embodiment 1

[0028] Figure 1 is a schematic structural diagram of the coffee machine water supply device according to the embodiment of the present application, Figure 2 is a schematic structural diagram of the camshaft according to the embodiment of the present application, Figure 3 is a schematic cross-sectional view structural diagram when the water flow channel assembly and the water valve group of the embodiment of the present application are matched. Next, reference will be made to Figures 1-3 to describe the coffee machine water supply device according to the embodiment of the present utility model in detail.

[0029] In an exemplary embodiment, the coffee machine water supply device according to the embodiment of the present application is used to provide hot water for the coffee machine.

[0030] In an exemplary embodiment, the coffee machine water supply device according to the embodiment of the present application is externally connected to a coffee liquid extraction device, for example, the water outlet 309 is communicated with the extraction head of the coffee machine.

[0031] In an exemplary embodiment, the coffee machine water supply device according to the embodiment of the present application includes: a heating block 101.

[0032] In an exemplary embodiment, the heating block 101 is used to heat the cold water or warm water flowing through the heating block 101 to a temperature required for extracting coffee liquid, for example, to 90° C.-94° C.

[0033] In an exemplary embodiment, a plurality of countersunk holes are provided on the heating block 101 , and the countersunk holes are used to place the heating rods 102 .

[0034] In an exemplary embodiment, the water supply device of the coffee machine of the embodiment of the present application further includes: a hot water pipe.

[0035] In an exemplary embodiment, the hot water pipe is arranged in the heating block 101 , which can be understood as the hot water pipe running through the heating block 101 , and the heating block 101 heats the water in the hot water pipe.

[0036] In an exemplary embodiment, the hot water pipe is in a continuous S-shape running through the heating block 101 , which can be understood as the shape of the hot water pipe inside the heating block 101 being a continuous S-shape.

[0037] In an exemplary embodiment, the heating rods 102 are evenly distributed around the hot water pipe.

[0038] In an exemplary embodiment, the heating rods 102 include a plurality of heating rods 102 , and the plurality of heating rods 102 are evenly distributed on the heating block 101 .

[0039] In an exemplary embodiment, the plurality of heating rods 102 are evenly distributed around the hot water pipe to ensure uniform heating of the hot water while also enabling a continuous supply of hot water.

[0040] In an exemplary embodiment, the water supply device of the coffee machine of the embodiment of the present application further includes: a water channel system.

[0041] In an exemplary embodiment, the water channel system includes a plurality of water channels.

[0042] In an exemplary embodiment, the water channel includes an inlet valve, an outlet valve and a chamber. It can be understood that the water channel system is composed of multiple water channels, and each water channel includes an inlet valve, an outlet valve and a chamber.

[0043] In an exemplary embodiment, water enters the chamber in a one-way manner through the water inlet valve.

[0044] In an exemplary embodiment, the water in the chamber flows from the chamber into the hot water pipe in a one-way manner through the water outlet valve.

[0045] In an exemplary embodiment, optionally, the water channel system includes a water channel assembly 103 and a water channel valve group 104 .

[0046] In an exemplary embodiment, the water channel assembly 103 is disposed on the side of the heating block 101.

[0047] In an exemplary embodiment, the water channel valve group 104 is disposed on the water channel assembly 103.

[0048] In an exemplary embodiment, the water channel assembly 103 includes the above-mentioned chamber.

[0049] In an exemplary embodiment, the water channel valve group 104 includes the above-mentioned inlet valve and outlet valve.

[0050] In an exemplary embodiment, both the inlet valve and the outlet valve are disposed on the chamber, or it can be understood that the inlet valve and the outlet valve on the water channel valve group 104 are both connected to the chamber on the water channel assembly 103.

[0051] In an exemplary embodiment, the water in each water channel enters unidirectionally through the inlet valve, then passes through the chamber and flows out unidirectionally from the outlet valve into the hot water pipe.

[0052] In an exemplary embodiment, both the inlet valve and the outlet valve are one-way valves, that is, the inlet valve can only intake water unidirectionally, and the outlet valve discharges water unidirectionally.

[0053] In an exemplary embodiment, the outlet valve is connected to the hot water pipe, that is, the water in the water channel finally enters the hot water pipe through the outlet valve, and then passes through the heating block 101 to be heated to the temperature required for coffee extraction liquid.

[0054] In an exemplary embodiment, optionally, the water channel valve group 104 is provided with an inlet 301.

[0055] In an exemplary embodiment, the inlet valve is connected to the inlet 301, that is, the water in the water channel is obtained from the inlet 301. When there are multiple water channels, the inlet 301 is respectively connected to multiple inlet valves.

[0056] In an exemplary embodiment, the coffee machine water supply device of the embodiment of the present application further includes: a camshaft 105.

[0057] In an exemplary embodiment, the camshaft 105 is disposed on the side of the heating block 101.

[0058] In an exemplary embodiment, optionally, the camshaft 105 and the water channel assembly 103 are arranged on both sides of the heating block 101 facing each other.

[0059] In an exemplary embodiment, an oval-shaped annular guide rail 203 is wound around the camshaft 105 in the longitudinal direction, that is, the oval-shaped annular guide rail 203 is wound around the side surface of the camshaft 105.

[0060] In an exemplary embodiment, the annular guide rail 203 and the camshaft 105 are not perpendicular to each other, that is, the included angle between the annular guide rail 203 and the camshaft is not a right angle.

[0061] In an exemplary embodiment, the camshaft 105 is cylindrical or similar to a cylinder.

[0062] In an exemplary embodiment, a transmission wheel is provided at one end of the camshaft 105, and no transmission wheel is provided at the other end thereof.

[0063] In an exemplary embodiment, optionally, the transmission wheel on the camshaft 105 may be a transmission gear.

[0064] In an exemplary embodiment, the two ends of the maximum diameter of the annular guide rail 203 are respectively arranged at the two ends of the camshaft 105 in the longitudinal direction, that is, for the two ends of the maximum diameter of the oval-shaped annular guide rail 203, one end is close to the end of the camshaft 105 where the transmission gear is provided, and the other end is close to the other end of the camshaft 105 corresponding to the transmission gear.

[0065] In an exemplary embodiment, the coffee machine water supply device according to the embodiment of the present application further includes: a slider 202.

[0066] In an exemplary embodiment, the slider 202 is arranged in the oval-shaped annular guide rail 203.

[0067] In an exemplary embodiment, optionally, the slider 202 is embedded in the oval-shaped annular guide rail 203.

[0068] In an exemplary embodiment, the slider 202 can move along the annular guide rail 203, that is, the slider 202 can move along the oval-shaped annular guide rail 203 within the oval-shaped annular guide rail 203, and the slider 202 can move continuously within the oval-shaped annular guide rail 203.

[0069] In an exemplary embodiment, there are multiple sliders 202, for example, two.

[0070] In an exemplary embodiment, the number of sliders 202 is the same as the number of water flow channels, and it can be understood that one slider 202 corresponds to one water flow channel.

[0071] In an exemplary embodiment, the coffee machine water supply device according to the embodiment of the present application further includes: a piston assembly.

[0072] In an exemplary embodiment, a piston assembly is connected to a slider 202 at one end and to a chamber at the other end.

[0073] In an exemplary embodiment, there are multiple piston assemblies, for example, two.

[0074] In an exemplary embodiment, the number of piston assemblies is the same as the number of sliders 202.

[0075] In an exemplary embodiment, the number of piston assemblies is the same as the number of chambers.

[0076] In an exemplary embodiment, when the camshaft 105 rotates, the slider 202 drives the piston assembly to move, and the piston assembly then drives water in and out of the chamber; when there are two sliders 202, the two sliders 202 are arranged on both sides of the camshaft 105. Due to the cooperation between the slider 202 and the elliptical annular guide rail 203, the two piston assemblies alternately drive water in and out of the chamber.

[0077] In an exemplary embodiment, the piston assembly includes: a piston.

[0078] In an exemplary embodiment, the piston includes a piston head and a piston rod.

[0079] In an exemplary embodiment, one end of the piston rod is fixedly connected to the piston head.

[0080] In an exemplary embodiment, the other end of the piston rod is connected to the slider 202. The other end of the piston rod can be directly connected to the slider 202 or indirectly connected through a third party as needed, and the connection method can be a fixed connection or a movable connection.

[0081] In an exemplary embodiment, when the other end of the piston rod is indirectly connected to the slider 202 through a third party, the piston assembly further includes: a fixing block 201; it can be understood that the other end of the piston rod is connected to the slider 202 through the fixing block 201.

[0082] In an exemplary embodiment, one side of the fixing block 201 is fixedly connected to the slider 20, and the other end of the piston rod is connected to the slider 202 through the fixing block 201.

[0083] In an exemplary embodiment, there are two piston assemblies.

[0084] In an exemplary embodiment, there are two water flow channels.

[0085] In an exemplary embodiment, for example, the water flow channels include a first water flow channel and a second water flow channel.

[0086] In an exemplary embodiment, the first water flow channel includes a first water inlet valve 303, a first chamber 306, and a first water outlet valve 302.

[0087] In an exemplary embodiment, the second water flow channel includes a second water inlet valve 304, a second chamber 307, and a second water outlet valve 305.

[0088] In an exemplary embodiment, the piston assembly further includes a fixed rod 204.

[0089] In an exemplary embodiment, there are multiple fixed rods 204. For example, each fixing block 201 is configured with two fixed rods 204.

[0090] In an exemplary embodiment, the multiple fixed rods 204 are arranged in parallel.

[0091] In an exemplary embodiment, one end of the fixed rod 204 is fixedly connected to the heating block 101.

[0092] In an exemplary embodiment, the fixing block 201 is movably sleeved on the fixed rod 204.

[0093] In an exemplary embodiment, the fixing block 201 reciprocates along the longitudinal direction of the fixed rod 204.

[0094] In an exemplary embodiment, when the camshaft 105 rotates, it drives the two sliders 202 on both sides to move along the annular guide rail 203; the sliders 202 drive the pistons to move in the chambers, thereby realizing the alternate entry and exit of the pistons on both sides into the corresponding chambers, and further achieving the purpose of alternately supplying water to the hot water pipeline by the two water flow channels.

[0095] In an exemplary embodiment, the heating block 101 further includes a piston hole matching the piston, and the piston hole is communicated with the chamber.

[0096] In an exemplary embodiment, the piston hole matches the piston.

[0097] In an exemplary embodiment, the two piston assemblies are symmetrically arranged on both sides of the camshaft 105, and the two piston assemblies are respectively provided with a first piston 107 and a second piston 106.

[0098] In an exemplary embodiment, both the first water inlet valve 303 and the second water inlet valve 304 are communicated with the water inlet 301.

[0099] In an exemplary embodiment, both the first water outlet valve 302 and the second water outlet valve 305 are communicated with the hot water pipeline.

[0100] In an exemplary embodiment, the first chamber 306 and the second chamber 307 are not communicated with each other.

[0101] In an exemplary embodiment, when the camshaft 105 rotates and the slider 202 corresponding to the first piston 107 moves from the nearest point to the farthest point in the annular guide 203 compared with the heating block 101, that is, when the first piston 107 moves away from the first chamber 306, the first chamber 306 is in negative pressure, the first water inlet valve 303 admits water, and the first water outlet valve 302 is in a closed state; synchronously, when the slider 202 corresponding to the second piston 106 moves from the farthest point to the nearest point in the annular guide 203 compared with the heating block 101, that is, when the second piston 106 presses into the second chamber 307, the second chamber 307 is compressed, the second water inlet valve 304 is closed, and the second water outlet valve 305 is opened, that is, at this time, the first chamber 306 admits water and the second chamber 307 discharges water.

[0102] In an exemplary embodiment, when the camshaft 105 continues to rotate and the slider 202 corresponding to the first piston 107 moves from the farthest point to the nearest point in the annular guide 203 compared with the heating block 101, that is, when the first piston 107 presses into the first chamber 306, the first chamber 306 is compressed, the first water inlet valve 303 is closed, and the first water outlet valve 302 is in an open state; synchronously, when the slider 202 corresponding to the second piston 106 moves from the nearest point to the farthest point in the annular guide 203 compared with the heating block 101, that is, when the second piston 106 moves away from the second chamber 307, the second chamber 307 is in negative pressure, the second water inlet valve 304 is opened, and the second water outlet valve 305 is closed, that is, at this time, the first chamber 306 discharges water and the second chamber 307 admits water.

[0103] In an exemplary embodiment, through the alternating water inlet and outlet of the first chamber 306 and the second chamber 307, the uninterrupted water supply to the hot water pipe is realized. When the camshaft 105 rotates at a constant speed, the uninterrupted and uniform water supply in the hot water pipe is better guaranteed, thus better guaranteeing the effect of coffee liquid extraction; and the uniform control of the hot water flow in the hot water pipe is realized, and the stepless speed regulation of the hot water flow can be carried out.

[0104] In an exemplary embodiment, the coffee machine water supply device of the embodiment of the present application further includes: a water outlet 309.

[0105] In an exemplary embodiment, the water outlet 309 is the water outlet 309 of the hot water pipe, that is, the water outlet 309 is communicated with the hot water pipe. It can be understood that the water heated by the heating block 101 in the hot water pipe flows out through the water outlet 309, and then the coffee liquid is extracted.

[0106] In an exemplary embodiment, the water outlet 309 is disposed outside the heating block 101.

[0107] In an exemplary embodiment, a pressure sensor 308 is provided at the water outlet 309, and the pressure sensor 308 is used to detect the hot water pressure in the hot water pipe.

[0108] In an exemplary embodiment, optionally, the hot water pipe in the heating block 101 first passes through the pressure sensor 308 and then flows out from the water outlet 309.

[0109] In an exemplary embodiment, the coffee machine water supply device of the embodiment of the present application further includes: a drive motor 108.

[0110] In an exemplary embodiment, the drive motor 108 is used to drive the camshaft 105 to rotate.

[0111] In an exemplary embodiment, the drive motor 108 drives the camshaft 105 through a transmission gear at one end of the camshaft 105. Of course, if necessary, an intermediate transmission gear component may optionally be included between the drive motor 108 and the transmission gear, that is, the drive motor 108 drives the camshaft 105 through the intermediate transmission gear component.

[0112] In an exemplary embodiment, the coffee machine water supply device of the embodiment of the present application further includes: a drive module 109.

[0113] In an exemplary embodiment, the drive module 109 is used to control the operating frequency of the drive motor 108.

[0114] In an exemplary embodiment, by adjusting the rotation frequency of the drive motor 108, the water flow rate and water flow velocity in the hot water pipe can be adjusted.

[0115] In an exemplary embodiment, the coffee machine water supply device of the embodiment of the present application further includes: a heating rod 102 control module.

[0116] In an exemplary embodiment, the heating rod 102 control module is used to control the output power of the heating rod 102, so as to adjust the water temperature flowing through the hot water pipe in the heating block 101.

[0117] In an exemplary embodiment, optionally, the water inlet 301 receives a water source from the outside, and the water source can be cold water or warm water.

[0118] In an exemplary embodiment, optionally, the water inlet 301 is externally connected to a water storage tank, and the water storage tank can preheat the water, thereby ensuring that the water temperature after being heated by the heating block can meet the water temperature requirements for extraction.

[0119] Although the embodiments disclosed by the present utility model are as above, the content is only for the convenience of understanding the present utility model and is not intended to limit the present utility model. Any person skilled in the art within the scope of the present utility model may make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed by the present utility model. However, the scope of patent protection of the present utility model shall still be subject to the scope defined by the appended claims.

Claims

1. A water supply device for a coffee machine, characterized in that, Comprising: A heating block; a hot water pipe passing through the heating block; a water flow channel system provided on the side of the heating block; the water flow channel system includes a plurality of water flow channels; each water flow channel includes an inlet valve, an outlet valve, and a chamber; both the inlet valve and the outlet valve are provided on the chamber; the outlet valve is connected to the hot water pipe; the inlet valve is connected to an inlet; water passes unidirectionally through the inlet valve into the chamber and then unidirectionally through the outlet valve from the chamber into the hot water pipe; a camshaft disposed on the side of the heating block; an elliptical annular guide rail is wound around the side of the camshaft; the annular guide rail is not perpendicular to the camshaft; a slider is disposed in the annular guide rail and the slider moves along the annular guide rail; a piston assembly, one end of which is connected to the slider and the other end is connected to the chamber; there are a plurality of the sliders; there are a plurality of the piston assemblies; the number of the piston assemblies is the same as the number of the sliders; the number of the piston assemblies is the same as the number of the chambers; when the camshaft rotates, a plurality of the piston assemblies alternately drive the water in their corresponding chambers to flow in and out.

2. The coffee machine water supply device according to claim 1, characterized in that The piston assembly includes: a piston, the piston includes a piston head and a piston rod; one end of the piston rod is fixedly connected to the piston head and the other end of the piston rod is connected to the slider.

3. The coffee machine water supply device according to claim 2, characterized in that, The piston assembly further includes: a fixed block, one side of the fixed block is fixedly connected to the slider; the other end of the piston rod passes through the fixed block and is connected to the slider.

4. The coffee machine water supply device according to claim 3, characterized in that, The piston assembly further includes: a fixed rod, one end of the fixed rod is fixedly connected to the heating block; the fixed block is sleeved on the fixed rod; the fixed block moves along the longitudinal direction of the fixed rod.

5. The coffee machine water supply device according to claim 1, characterized in that, The hot water pipe penetrates through the heating block in a continuous S shape.

6. The coffee machine water supply device according to claim 1, characterized in that, The heating block further includes: heating rods, the heating rods are evenly distributed around the hot water pipe.

7. The coffee machine water supply device according to claim 1, characterized in that, The hot water pipe is provided with an outlet; the outlet is disposed outside the heating block; a pressure sensor is provided at the outlet.

8. The coffee machine water supply device according to claim 1, characterized in that Further comprising: A driving motor; the camshaft is cylindrical, and a transmission wheel is provided at one end of the cylindrical camshaft; the driving motor drives the camshaft through the transmission wheel.

9. The coffee machine water supply device according to claim 8, characterized in that, Further comprising: A driving module for controlling the working frequency of the driving motor.

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