Heating boiler of coffee machine

Abstract

When the heating boiler of the coffee machine works, water is injected into a first heating space through a water inlet, and when the liquid level of the first heating space rises to a notch of an annular retaining wall of an upper cover, the water flows through the notch, bypasses a water inlet retaining wall, enters a second heating space and finally flows out through a hot water outlet. In this way, the water flow path is prolonged, the contact time of water and the boiler wall is prolonged, and the water is heated more sufficiently. The water flow in the first heating space cannot directly flow to the hot water outlet from the notch due to the blocking of the water inlet retaining wall, and can be kept in a heating state in the second heating space, so that the temperature of the outlet water is ensured.

Description

Technical Field

[0001] The utility model relates to a heating boiler of a coffee machine. Background Art

[0002] The coffee machine has relatively high requirements for the water temperature of hot water, and the water temperature is a key factor affecting the coffee extraction efficiency. A higher water temperature can improve the coffee extraction efficiency, dissolve more coffee substances in water, thereby increasing the coffee concentration and taste. On the contrary, too low water temperature will lead to reduced extraction efficiency and too light coffee taste. The main function of the heating boiler of the coffee machine is to heat the water to an appropriate temperature through heating. Most of the heating boilers of coffee machines on the market currently adopt a design without a retaining wall. After cold water is injected into the heating boiler of the coffee machine, it is easy to directly flow to the water outlet, resulting in insufficient heating of some cold water and not high enough water temperature of the outlet water, affecting the taste of the subsequent brewed coffee. Summary of the Utility Model

[0003] Therefore, the utility model provides a heating boiler of a coffee machine to solve the above problems.

[0004] To achieve the above object, the technical solution provided by the utility model is as follows:

[0005] A heating boiler of a coffee machine, comprising an upper cover, an external water inlet channel, a base and a heating component. The upper cover is arranged above the base and cooperates with the base to form a heating cavity. The heating component is used to heat the water flow in the heating cavity. The base has a hot water outlet. The base is provided with a base annular retaining wall, and the upper cover is provided with an upper cover annular retaining wall that abuts and cooperates with the base annular retaining wall.

[0006] The upper cover annular retaining wall has a notch, and the upper cover is further provided with a water inlet retaining wall. The water inlet retaining wall corresponds to the notch and is arranged within the upper cover annular retaining wall.

[0007] A first heating space is formed between the inner side wall of the base, the inner side wall of the upper cover, the outer side wall of the upper cover annular retaining wall and the outer side wall of the base annular retaining wall. The first heating space is communicated with the external water inlet channel.

[0008] A second heating space is formed between the inner side wall of the base, the inner side wall of the upper cover, the inner side wall of the upper cover annular retaining wall and the inner side wall of the base annular retaining wall. The hot water outlet is arranged at the bottom of the second heating space.

[0009] The water flow enters the first heating space through the external water inlet channel, enters the second heating space through the notch and bypasses the water inlet retaining wall. Finally, the heated water flow flows out through the hot water outlet.

[0010] Further, it further includes a pressure pump, which is arranged outside the heating boiler of the coffee machine and applies water pressure to the water flow in the water inlet channel.

[0011] Further, the hot water outlet is located on the base and is provided with a hot water outlet valve located within the annular retaining wall of the base. The hot water outlet valve includes a hot water pipe, a sealing plug, and a spring. Both the sealing plug and the spring are arranged within the hot water pipe; one end of the spring is fixedly connected to the sealing plug, and the other end of the spring is fixed within the hot water pipe. One end of the hot water pipe is a hot water inlet and is elastically blocked by the sealing plug, and the other end of the hot water pipe is the hot water outlet. When the pressure pump applies pressure to the water flow, the sealing plug separates from the hot water inlet of the hot water pipe, allowing the water to flow out through the hot water pipe.

[0012] Further, the hot water pipe is a pipe column extending towards the interior of the boiler. The height of the hot water pipe relative to the base is higher than the height of the annular retaining wall of the base relative to the base, and there is a gap between the top of the pipe column of the hot water pipe and the upper cover.

[0013] Further, a first rib plate is arranged between the pipe column of the hot water pipe and the annular retaining wall of the base.

[0014] Further, a second rib plate is arranged between the inner wall of the base and the annular retaining wall of the base.

[0015] Further, it further includes a heat insulation base, and the base is mounted on the heat insulation base.

[0016] Further, the height of the water inlet retaining wall relative to the upper cover is not lower than the height of the upper cover annular retaining wall relative to the upper cover, and the length of the water inlet retaining wall on the upper cover is greater than the notch of the upper cover annular retaining wall.

[0017] Further, a sealing ring is arranged between the upper cover and the base.

[0018] Further, it further includes a diverter head and a filter screen. The diverter head is fixedly installed at the hot water outlet, and the filter screen is fixedly installed below the diverter head. The diverter head diverts the water flowing out of the hot water outlet, and the filter screen further diverts the water flowing out of the diverter head.

[0019] Through the technical solution provided by the present utility model, the following beneficial effects are achieved:

[0020] By setting the abutting and mating of the base annular retaining wall and the upper cover annular retaining wall, the interior of the heating boiler of the coffee machine is separated into the first heating space and the second heating space. The water in the first heating space flows into the second heating space through the notch of the upper cover annular retaining wall and is blocked by the water inlet retaining wall and cannot directly flow to the hot water outlet. In this way, the water flow path is extended, the contact time between the water and the boiler wall is increased, and the water is heated more fully, thereby ensuring the temperature of the water outlet. Description of the Drawings

[0021] Figure 1 The figure shows a perspective view of the heating boiler of the coffee machine in the embodiment;

[0022] Figure 2 The figure shows an exploded view of the heating boiler of the coffee machine in the embodiment;

[0023] Figure 3 The figure shows a perspective view of the upper cover and the base of the heating boiler of the coffee machine in the embodiment;

[0024] Figure 4 The figure shows a partial cross-sectional view of the heating boiler of the coffee machine in the embodiment;

[0025] Figure 5 The figure shows a bottom-up cross-sectional view of the upper cover of the heating boiler of the coffee machine in the embodiment (the arrow direction is the water flow direction);

[0026] Figure 6 The figure shows a cross-sectional view of the heating boiler of the coffee machine in the embodiment. Detailed Embodiments

[0027] To further illustrate the embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used to explain the operating principle of the embodiments in conjunction with the relevant descriptions in the specification. With reference to these contents, those of ordinary skill in the art should be able to understand other possible embodiments and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0028] In the description of the present invention, the orientation or positional relationships such as "upper", "lower", "left", "right", "front", "rear", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, 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 should not be construed as a limitation of the present invention.

[0029] The present invention will be further described below in conjunction with the drawings and specific embodiments.

[0030] Refer to Figures 1 to 6As shown in the figure, a heating boiler of a coffee machine provided in this embodiment includes an upper cover 1, an external water inlet channel 4, a base 2, and a heating component 3. The upper cover 1 is disposed above the base 2 and cooperates with the base 2 to form a heating cavity. The heating component 3 is disposed inside the upper cover 1 and is electrically connected to an external power supply through an electrical connection port. The heating component 3 is used to heat the water flow in the heating cavity. The base 2 has a hot water outlet 6. The base 2 is provided with a base annular retaining wall 21, and the upper cover 1 is provided with an upper cover annular retaining wall 11 that abuts and cooperates with the base annular retaining wall 21. The height of the external water inlet channel 4 relative to the base 2 is lower than the height of the base annular retaining wall 21 relative to the base 2.

[0031] The upper cover annular retaining wall 11 has a notch 12. The upper cover 1 is further provided with a water inlet retaining wall 13. The water inlet retaining wall 13 corresponds to the notch 12 and is disposed inside the upper cover annular retaining wall 11.

[0032] A first heating space 41 is formed between the inner side wall of the base 2, the inner side wall of the upper cover 1, the outer side wall of the upper cover annular retaining wall 11, and the outer side wall of the base annular retaining wall 21. The first heating space 41 communicates with the external water inlet channel 4.

[0033] A second heating space 42 is formed by the inner side wall of the base 2, the inner side wall of the upper cover 1, the inner side wall of the upper cover annular retaining wall 11, and the inner side wall of the base annular retaining wall 21. The hot water outlet 6 is disposed at the bottom of the second heating space 42.

[0034] The water flow enters the first heating space 41 through the external water inlet channel 4, enters the second heating space 42 through the notch 12 and bypasses the water inlet retaining wall 13. Finally, the heated water flow flows out through the hot water outlet 6.

[0035] Due to heat conduction through thermal contact, both the upper cover 1 and the base 2 are heated by the heating component 3. During operation, water is injected into the first heating space 41 through the external water inlet channel 4. When the liquid level in the first heating space 41 rises to the notch 12 of the upper cover annular retaining wall 11, the water flow passes through the notch 12 of the upper cover annular retaining wall 11, bypasses the water inlet retaining wall 13 and enters the second heating space 42, and finally flows out through the hot water outlet 6. This extends the water flow path, increases the contact time between the water and the boiler wall, and enables the water to be heated more thoroughly. The water flow in the first heating space 41 cannot directly flow from the notch 12 to the hot water outlet 6 due to the blocking of the water inlet retaining wall 13, but will remain in the heating state in the second heating space 42, thereby ensuring the temperature of the outlet water.

[0036] Further, it further includes a pressure pump which is arranged outside the heating boiler of the coffee machine and applies water pressure to the water flow in the water inlet passage 4.

[0037] Further, the upper cover 1 is further provided with a steam outlet 5, and the opening or closing of the steam outlet 5 is controlled by an external steam switch structure.

[0038] Further, the hot water outlet 6 is located on the base 2 and is provided with a hot water outlet valve located within the annular retaining wall 21 of the base. The hot water outlet valve includes a hot water pipe 71, a sealing plug 72 and a spring 73. Both the sealing plug 72 and the spring 73 are arranged within the hot water pipe 71; one end of the spring 73 is fixedly connected to the sealing plug 72, and the other end of the spring 73 is fixed within the hot water pipe 71. One end of the hot water pipe 71 is a hot water inlet and is elastically blocked by the sealing plug 72; during normal operation, the air pressure inside the heating boiler of the coffee machine is not sufficient to cause the spring 73 to be stressed and contract. At the same time, a temperature sensing device is installed in the heating boiler of the coffee machine, and when the heating boiler of the coffee machine reaches the set temperature, it will control the heating component 3 to stop heating, thereby ensuring that the air pressure inside the heating boiler of the coffee machine will not be too high; the other end of the hot water pipe 71 is the hot water outlet. When the pressure pump operates and applies pressure to the water flow, the spring 73 contracts under the pressure of the water, and the sealing plug 72 separates from the hot water inlet of the hot water pipe 71, allowing the water to flow out through the hot water pipe 71. Further, the shape of the sealing plug 72 is conical and the material is silica gel. Of course, in other embodiments, other shapes and high-temperature resistant materials that can achieve blocking the hot water inlet can also be used, such as a spherical shape and rubber material. The pressure pump, the temperature sensing device and the related structures for controlling the heating boiler of the coffee machine to stop heating are prior arts and will not be elaborated here.

[0039] Further, the hot water pipe 71 is a pipe column extending towards the inside of the boiler. The height of the hot water pipe 71 relative to the base 2 is higher than the height of the annular retaining wall 21 of the base relative to the base 2, thereby effectively preventing the water in the first heating space 41 from directly bypassing the water inlet retaining wall 13 through the notch 12 and entering the hot water pipe 71 directly. And there is a gap between the top of the pipe column of the hot water pipe 71 and the upper cover 1, allowing water to flow into the hot water pipe 71 from this gap.

[0040] Further, a first rib plate 22 is provided between the pipe column of the hot water pipe 71 and the base annular retaining wall 21 to enhance the structural stability between the hot water pipe 71 and the base annular retaining wall 21, increase the contact area between water and the heating boiler of the coffee machine, and promote heating. Further still, the height of the first rib plate 22 relative to the base 2 is lower than the height of the hot water pipe 71 relative to the base 2 to avoid obstructing the flow of water from the second heating space 42 into the hot water pipe 71.

[0041] Further, a second rib plate 23 is provided between the inner wall of the base 2 and the outer side wall of the base annular retaining wall 21 to enhance the structural stability of the base annular retaining wall 21, increase the contact area between water and the heating boiler of the coffee machine, and promote heating. Further still, the height of the second rib plate 23 relative to the base 2 is lower than the height of the base annular retaining wall 21 relative to the base 2 to avoid obstructing the flow of water from the first heating space 41 through the notch 12 into the second heating space 42.

[0042] Further, a heat insulation base 8 is further included, and the base 2 is mounted on the heat insulation base 8 so that the heat of the boiler will not be directly conducted to the outside, and the user is prevented from directly contacting the heating boiler.

[0043] Further, the upper cover 1 and the base 2 are made of aluminum. Aluminum boilers have good thermal conductivity, are light in weight, and have high strength. Of course, other materials with good thermal conductivity, such as copper, can also be used.

[0044] Further, the height of the water inlet retaining wall 13 relative to the upper cover 1 is not lower than the height of the upper cover annular retaining wall 11 relative to the upper cover 1, and the length of the water inlet retaining wall 13 on the upper cover 1 is greater than the notch 12 of the upper cover annular retaining wall 13, so that the water inlet retaining wall 13 can completely cover the notch 12 and block the water flow from the notch 12 from directly flowing to the steam outlet 5 or the hot water outlet 6.

[0045] Further, a sealing ring 9 is provided between the upper cover 1 and the base 2 to better ensure the airtightness of the heating boiler of the coffee machine. Further still, the sealing ring 9 is made of silica gel. Of course, in other embodiments, materials with heat resistance and good airtightness for the overall structure, such as rubber, can also be used.

[0046] Further, a flow splitter 81 and a filter screen 82 are further included. The flow splitter 81 is fixedly installed at the hot water outlet 6, and the filter screen 82 is fixedly installed below the flow splitter 81. The flow splitter 81 splits the water flowing out of the hot water outlet 6, and the filter screen 82 further splits the water flowing out of the flow splitter 81, so that the hot water flows out evenly at the same time.

[0047] Further, the upper cover 1 and the base 2 are fixedly connected by bolts and nuts.

[0048] Although the present utility model is specifically shown and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes can be made to the present utility model in terms of form and details without departing from the spirit and scope of the present utility model defined by the appended claims, and all of them fall within the protection scope of the present utility model.

Claims

1. A heating boiler of a coffee machine, comprising an upper cover, an external water inlet channel, a base and a heating assembly, characterized in that, The upper cover is arranged above the base and cooperates with the base to form a heating cavity, and the heating component is used to heat the water flow in the heating cavity; the base has a hot water outlet, the base is provided with a base annular retaining wall, and the upper cover is provided with an upper cover annular retaining wall that abuts and cooperates with the base annular retaining wall; The upper cover annular retaining wall has a notch, and the upper cover is further provided with a water inlet retaining wall, and the water inlet retaining wall corresponds to the notch and is arranged within the upper cover annular retaining wall; A first heating space is formed between the inner side wall of the base, the inner side wall of the upper cover, the outer side wall of the upper cover annular retaining wall and the outer side wall of the base annular retaining wall, and the first heating space is communicated with the external water inlet channel; A second heating space is formed by the inner side wall of the base, the inner side wall of the upper cover, the inner side wall of the upper cover annular retaining wall and the inner side wall of the base annular retaining wall, and the hot water outlet is arranged at the bottom of the second heating space; The water flow enters the first heating space through the external water inlet channel, enters the second heating space through the notch and bypasses the water inlet retaining wall, and finally, the heated water flow flows out through the hot water outlet.

2. The heating boiler of the coffee machine according to claim 1, characterized in that, It further includes a pressure pump, and the pressure pump is arranged outside the heating boiler of the coffee machine and applies water pressure to the water flow in the water inlet channel.

3. The heating boiler of the coffee machine according to claim 2, characterized in that The hot water outlet is located on the base and is provided with a hot water outlet valve located within the base annular retaining wall. The hot water outlet valve includes a hot water pipe, a sealing plug and a spring. The sealing plug and the spring are both arranged within the hot water pipe; one end of the spring is fixedly connected to the sealing plug, and the other end of the spring is fixed within the hot water pipe. One end of the hot water pipe is a hot water inlet and is elastically blocked by the sealing plug, and the other end of the hot water pipe is the hot water outlet. When the pressure pump applies pressure to the water flow, the sealing plug is separated from the hot water inlet of the hot water pipe, so that the water flow flows out through the hot water pipe.

4. The heating boiler of the coffee machine according to claim 3, characterized in that, The hot water pipe is a pipe column extending towards the inside of the boiler. The height of the hot water pipe relative to the base is higher than the height of the base annular retaining wall relative to the base, and there is a gap between the top of the pipe column of the hot water pipe and the upper cover.

5. The heating boiler of the coffee machine according to claim 4, characterized in that, A first rib plate is arranged between the pipe column of the hot water pipe and the base annular retaining wall.

6. The heating boiler of the coffee machine according to claim 1, characterized in that, A second rib plate is arranged between the inner wall of the base and the outer side wall of the base annular retaining wall.

7. The heating boiler of the coffee machine according to claim 1, characterized in that, It further includes a heat insulation seat, and the base is installed on the heat insulation seat.

8. The heating boiler of the coffee machine according to claim 1, characterized in that, The height of the water inlet retaining wall relative to the upper cover is not lower than the height of the upper cover annular retaining wall relative to the upper cover, and the length of the water inlet retaining wall on the upper cover is greater than the notch of the upper cover annular retaining wall.

9. The heating boiler of the coffee machine according to claim 1, characterized in that, A sealing ring is arranged between the upper cover and the base.

10. The heating boiler of the coffee machine according to claim 1, characterized in that, It further includes a flow splitting head and a filter screen. The flow splitting head is fixedly installed at the hot water outlet, and the filter screen is fixedly installed below the flow splitting head. The flow splitting head splits the water flowing out of the hot water outlet, and the filter screen further splits the water flowing out of the flow splitting head.

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