Water outlet structure of water tank of coffee machine

Abstract

The water outlet structure of the water tank of the coffee machine comprises the water tank and a connecting base, a first water outlet is formed in the bottom of the water tank, and a water outlet valve capable of moving up and down is arranged in the water tank; the connecting base comprises a body and a sealing ring, the body is installed on a coffee machine body and provided with an inner cavity with an upward opening, the first water outlet is inserted into the inner cavity, the sealing ring is installed at the opening of the inner cavity, a top column, a second water outlet and a water return port are arranged in the inner cavity, and the water return port is located at the bottom of the inner cavity and protrudes upwards. The water outlet is communicated with the water return pipe, the water return port is communicated with the water return pipe, the top column is sleeved with a filter piece, the filter piece is provided with a supporting edge, a filter hole and a first through hole, and the water return port is located in the first through hole. The water outlet and the water return port are mutually independent, the water return port is separated from the filter piece, return water flows into the cavity, located on the upper portion of the filter piece, of the inner cavity through the water return port, the return water cannot be directly mixed with water in the water outlet pipe, and misjudgment caused by the fact that the return water directly passes through the flowmeter is avoided.

Description

Technical Field

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

[0002] A coffee machine is a household appliance that grinds coffee beans into powder, presses the powder, and brews coffee through high-pressure brewing and extraction. The water tank provides water for the high-pressure brewing and extraction process. The water in the water tank is connected to the flow meter through a pipeline, and then pumped to the heater through a water pump. The hot water heated by the heater flows out of the brewing head to extract the coffee powder under high pressure. When the water pressure in the heater rises to a value exceeding the set value, the steam or the mixture of water and steam generated by the heating of the heater needs to be depressurized and then flow back into the water tank.

[0003] In existing coffee machines, water in the water outlet pipe and return water in the return pipe are easily mixed, causing the return water to flow directly from the water outlet pipe to the flow meter. When the water tank is short of water, the return water passes through the flow meter, making it easy for the flow meter to misjudge that there is no water shortage, causing the water pump to continue working. Utility Model Content

[0004] The utility model aims to provide a water outlet structure of a water tank of a coffee machine, so as to solve the technical problem that the return water in the existing coffee machine is easy to directly pass through the flow meter and is prone to misjudgment, resulting in the water pump still continuing to work.

[0005] The utility model provides a water outlet structure for a coffee machine water tank through the following technical solutions:

[0006] A water outlet structure for a coffee machine water tank, comprising:

[0007] A water tank, wherein a first water outlet is provided at the bottom of the water tank, a water outlet valve is provided in the first water outlet, and the water outlet valve can move up and down;

[0008] A connecting seat, the connecting seat includes a main body and a sealing ring, the main body is installed on the main body of the coffee machine, and is provided with an inner cavity opening upward, the first water outlet is inserted in the inner cavity, and the sealing ring is installed at the opening of the inner cavity to seal the first water outlet and the inner cavity; a top column, a second water outlet and a return water port are provided in the inner cavity, the return water port is located at the bottom of the inner cavity and protrudes upward, a water outlet pipe and a return water pipe are provided on the main body, the second water outlet is connected with the water outlet pipe, and the return water port is connected with the return water pipe, a filter plate is sleeved on the top column, the filter plate is provided with a supporting edge, a filter hole and a first through hole, and the return water port is located in the first through hole.

[0009] In one embodiment, the top column is provided with a first protrusion, the filter plate is provided with a first groove, and the first protrusion is matched with the first groove.

[0010] In one embodiment, the filter plate is provided with a second through hole, and the second through hole is communicated with the first groove.

[0011] In one embodiment, a second convex portion is provided on the top column, and the second convex portion is located next to the water return port.

[0012] In one embodiment, the first through hole is connected to the second through hole.

[0013] In one embodiment, the main body is provided with a cylindrical wall, the inner cavity is formed inside the cylindrical wall, the sealing ring includes a vertical portion, a horizontal portion and a bent portion, an annular groove is formed between the vertical portion and the horizontal portion, the annular groove is clamped on the cylindrical wall, and the bent portion is located in the inner cavity.

[0014] In one embodiment, a plurality of connecting ears are disposed outside the main body, and the connecting seat is fixed to the coffee machine body through the connecting ears.

[0015] In one embodiment, the water outlet valve includes a valve core and an elastic member, wherein the elastic member is sleeved on the valve core, a sealing ring is embedded in the top of the valve core, and a third water outlet is provided at the bottom.

[0016] Compared with the prior art, in the water outlet structure of the water tank of the coffee machine of the utility model, the water outlet and the water return port in the connecting seat are independent of each other, the water return port is separated from the filter plate, and the return water flows into the inner cavity located at the upper part of the filter plate through the water return port. The return water volume is small and it is difficult to directly pass through the filter plate. Therefore, the return water will not be directly mixed with the water in the second water outlet, thereby avoiding the return water directly flowing out from the water outlet pipe to the flow meter, thereby avoiding the flow meter from misjudging when the water tank is short of water. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a cross-sectional view of a water outlet structure of a coffee machine water tank of the utility model;

[0019] Figure 2 yes Figure 1 Enlarged view of part A in the middle;

[0020] Figure 3 This is an exploded view of a connection seat of a water outlet structure of a coffee machine water tank of the utility model;

[0021] Figure 4 It is a cross-sectional view of a connection seat of a water outlet structure of a coffee machine water tank of the utility model;

[0022] Figure 5 yes Figure 3 The utility model is a schematic diagram of the structure of a filter sheet in a connecting seat of a water outlet structure of a coffee machine water tank.

[0023] Indications in the figure: 1. water tank; 11. first water outlet; 12. water outlet valve; 121. valve core; 1211. third water outlet; 122. elastic member; 123. sealing ring; 2. connecting seat; 21. main body; 211. inner cavity; 2111. top column; 21111. first convex portion; 21112. second convex portion; 212. second water outlet; 213. return water port; 214. water outlet pipe; 215. return water pipe; 216. cylinder wall; 217. connecting ear; 22. sealing ring; 221. vertical portion; 222. horizontal portion; 223. bending portion; 23. filter plate; 231. supporting edge; 232. filter hole; 233. first through hole; 234. first groove; 235. second through hole. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. The components of the embodiment of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] like Figure 1-5As shown, this embodiment provides a water outlet structure of a coffee machine water tank, including a water tank 1 and a connecting seat 2. The water tank 1 is provided with a first water outlet 11 at the bottom. The first water outlet 11 protrudes outward from the bottom of the water tank 1 in a cylindrical shape, and a water outlet valve 12 is provided therein. The water outlet valve 12 can move up and down. The water outlet valve 12 includes a valve core 121 and an elastic member 122. The elastic member 122 is sleeved on the valve core 121. A sealing ring 123 is embedded on the top of the valve core 121. A third water outlet 1211 is provided at the bottom of the valve core 121. The sealing ring 123 can block the first water outlet 11. When the valve core 12 moves upward, the sealing ring 123 moves away from the first water outlet 11, and the water in the water tank 1 flows out from the first water outlet 11 and then flows out through the third water outlet 1211. In this embodiment, the elastic member 122 is a metal spring, and a clamping portion is provided on the valve core 12, so that the metal spring can be better fixed on the valve core 12.

[0027] The connection base 2 includes a body 21 and a sealing ring 22. The body 21 is installed on the main body of the coffee machine and is provided with an inner cavity 211 opening upward. The first water outlet 11 is inserted into the inner cavity 211. The sealing ring 22 is installed at the opening of the inner cavity 211 so that the water tank 1 is sealed and connected with the inner cavity 2111 of the connection base 2. The water flowing out through the first water outlet 11 finally enters the inner cavity 211. The inner cavity 211 is provided with a top column 2111, a second water outlet 212 and a water return port 213. The water return port 213 is located at the bottom of the inner cavity 211 and protrudes upward. It can be understood that the water return port 213 has a certain height relative to the bottom of the inner cavity 211 and is not flat with the bottom of the inner cavity 211. The main body 21 is provided with a water outlet pipe 214 and a water return pipe 215, the second water outlet 212 is connected to the water outlet pipe 214, and the water return port 213 is connected to the water return pipe 215. When the water in the water tank 1 flows into the inner cavity 211, it flows from the second water outlet 212 through the water outlet pipe 214 to the flow meter of the coffee machine body, and finally is transported to the heater through a water pump, and is used for extracting coffee after heating; the return water generated by the pressure relief flows back to the return port 213 from the water return pipe 215, and then flows into the connecting seat 2 and returns to the water tank.

[0028] A filter plate 23 is sleeved on the top column 2111, and the shape of the filter plate 23 is adapted to the inner cavity 211. In the present embodiment, the filter plate 23 is a circular plate, and the edges of the filter plate 23 are provided with supporting edges 231, so that when the filter plate 23 is installed in the inner cavity 211, the supporting edges 231 are in contact with the bottom of the inner cavity 211, thereby dividing the inner cavity 2111 into an upper part and a lower part. The filter plate 23 is provided with a plurality of filter holes 232 on the disc for filtering larger impurities in the water. The filter plate 23 is provided with a first through hole 233. The edge of the first through hole 233 is also provided with the support edge 231. The depth of the first through hole 233 is greater than the height of the return port 23. The return port 213 is located in the first through hole 233, and the support edge 231 of the edge is wrapped around the return port 213, isolating the return port 213 from the lower part of the inner cavity 211. The return water flowing in from the return pipe 215 can only flow to the upper part of the inner cavity 211 located at the filter plate 23, and will not flow out directly from the second water outlet 212, thereby avoiding direct mixing with the outlet water in the outlet pipe 214 and entering the flow meter. Since the amount of return water generated when the coffee machine is working is small, when the water tank is short of water, the return water is not enough to directly pass through the filter plate 23, which can avoid the flow meter from misjudging that the water tank is not short of water and causing the water pump to continue working.

[0029] When the water tank 1 is installed on the connection base 2, the top column 2111 pushes up the valve core 121 of the water outlet valve 12, and the sealing ring 123 moves away from the first water outlet 11, so that the water in the water tank 1 flows out. When the water tank 1 is taken away by the user, the water tank 1 is separated from the connection base 2, and the water outlet valve 12 moves downward due to its own gravity and the restoring force of the elastic member 122 until the sealing ring 123 blocks the first water outlet 11, and water cannot flow out of the water tank 1 at this time.

[0030] like Figure 3 , Figure 4 As shown, the top column 2111 is provided with a first protrusion 21111, and the filter plate 23 is provided with a first groove 234. The first protrusion 21111 is adapted to the first groove 234, so that the filter plate 23 is better restricted on the top column 2111 and is not easy to slide up and down at will, thereby preventing the return water port 213 from being separated from the first through hole 233.

[0031] Furthermore, the top column 2111 is provided with a second protrusion 21112 , and the second protrusion 21112 is located next to the return water port 213 . Specifically, the second protrusion 21112 is connected to the side wall of the return water port 213 , thereby strengthening the support of the return water port 213 .

[0032] like Figure 5As shown, the filter plate 23 is also provided with a second through hole 235, and the top column 21111 passes through the second through hole 235 so that the filter plate 23 is sleeved on the top column 21111, and the second through hole 235 is connected with the first groove 234, and the first through hole 233 is connected with the second through hole 235, so as to facilitate the installation of the filter plate 23.

[0033] like Figure 3 and Figure 4 As shown, the main body 21 is provided with a cylinder wall 216, and the top of the cylinder wall has an opening to form the inner cavity 2111. The sealing ring 22 includes a vertical portion 221, a horizontal portion 222 and a bent portion 223. An annular groove is formed between the vertical portion 221 and the horizontal portion 222. The sealing ring 22 is clamped on the cylinder wall 216 through the annular groove. At this time, the bent portion 223 is located in the inner cavity 2111. The sealing ring 22 is arranged in such a structure to facilitate the installation of the sealing ring 22 on the main body 1. When the water tank 1 is installed on the connecting seat 2, the bent portion 223 is interference fit with the water outlet 11, so that the water tank 1 is sealed and connected to the connecting seat 2 without water leakage.

[0034] In this embodiment, the body 21 is provided with three connecting ears 217, and the connecting base 2 is fixedly mounted on the coffee machine body through the connecting ears 217. Of course, the connecting base 2 of the present invention can also be provided with more than three or two connecting ears, which is not limited here and belongs to the protection scope of the present invention.

[0035] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0036] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A water outlet structure for a coffee machine water tank, characterized in that: include: A water tank, wherein a first water outlet is provided at the bottom of the water tank, a water outlet valve is provided in the first water outlet, and the water outlet valve can move up and down; A connecting seat, the connecting seat includes a main body and a sealing ring, the main body is installed on the main body of the coffee machine, and is provided with an inner cavity opening upward, and the first water outlet is inserted in the inner cavity; the sealing ring is installed at the opening of the inner cavity to ensure a sealed connection between the first water outlet and the inner cavity; a top column, a second water outlet and a return water port are provided in the inner cavity, the return water port is located at the bottom of the inner cavity and protrudes upward, a water outlet pipe and a return water pipe are provided on the main body, the second water outlet is connected with the water outlet pipe, and the return water port is connected with the return water pipe, a filter plate is sleeved on the top column, the filter plate is provided with a supporting edge, a filter hole and a first through hole, and the return water port is located in the first through hole.

2. The water outlet structure of the coffee machine water tank according to claim 1, characterized in that: The top column is provided with a first convex portion, and the filter plate is provided with a first groove, and the first convex portion is matched with the first groove.

3. The water outlet structure of the coffee machine water tank according to claim 2, characterized in that: The filter plate is provided with a second through hole, and the second through hole is communicated with the first groove.

4. The water outlet structure of the coffee machine water tank according to claim 1, characterized in that: A second convex portion is provided on the top column, and the second convex portion is located beside the water return port.

5. The water outlet structure of the coffee machine water tank according to claim 3, characterized in that: The first through hole is communicated with the second through hole.

6. The water outlet structure of the coffee machine water tank according to claim 1, characterized in that: The body is provided with a cylinder wall, the inner cavity is formed inside the cylinder wall, the sealing ring includes a vertical portion, a horizontal portion and a bent portion, an annular groove is formed between the vertical portion and the horizontal portion, the annular groove is clamped on the cylinder wall, and the bent portion is located in the inner cavity.

7. The water outlet structure of the coffee machine water tank according to claim 1, characterized in that: A plurality of connecting ears are arranged outside the main body, and the connecting seat is fixed on the coffee machine main body through the connecting ears.

8. The water outlet structure of the coffee machine water tank according to claim 1, characterized in that: The water outlet valve comprises a valve core and an elastic member, wherein the elastic member is sleeved on the valve core, a sealing ring is embedded in the top of the valve core, and a third water outlet is arranged at the bottom.

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