Coffee maker with adjustable water temperature

Abstract

The present application relates to the technical field of household appliances, and discloses a coffee machine capable of adjusting water temperature, which comprises a boiler and a temperature-adjusting water pipe, the boiler is internally provided with an outer water storage cavity and an inner water storage cavity, the top of the inner water storage cavity is provided with a water outlet pipe, and a sleeve is fixedly arranged on the top of the inner water storage cavity, the sleeve is sleeved on the upper end of the water outlet pipe, and a gap is left between the inner wall of the sleeve and the outer wall of the water outlet pipe, and the sleeve is in communication with the temperature-adjusting water pipe. When coffee is made, the cold water flowing into the temperature-adjusting water pipe can flow into the gap between the sleeve and the water outlet pipe, then flow downwards along the outer wall of the water outlet pipe, mix with the hot water in the inner water storage cavity, and finally flow out through the bottom of the water outlet pipe to brew coffee. Through the above water flow control mode, the temperature of the coffee-making water can be controlled, the structure is simple, and the effect is very obvious.

Description

Technical Field

[0001] This invention relates to the field of household appliance technology, and in particular to a coffee machine with adjustable water temperature. Background Technology

[0002] Coffee is loved by consumers for its unique flavor. Using a coffee machine to make coffee is not only convenient but also ensures the quality of the coffee, hence its widespread use. There are many types of coffee machines currently available, one of which is a machine with a separate boiler. This boiler has two water storage chambers, an outer chamber with a heating element that heats the water there, while the water in the inner chamber is heated primarily through heat conduction from the water in the outer chamber. Typically, the water in the outer chamber is heated to produce steam, so its temperature is above 100 degrees Celsius. The water in the inner chamber is mainly used to make coffee, but the water temperature for making coffee should not be too high; 92-94 degrees Celsius is ideal. In existing coffee machines, after prolonged standby, the water in the inner chamber can become excessively heated. Using such high-temperature water to make coffee results in a poor brewing effect, with excessive vaporization. Furthermore, this temperature exceeds the optimal temperature for coffee extraction, leading to a poor taste in the brewed coffee. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a coffee machine with adjustable water temperature.

[0004] According to a first aspect of the present invention, an adjustable water temperature coffee machine includes a boiler and a temperature-regulating water pipe. The temperature-regulating water pipe is located outside the boiler. The boiler has an outer water storage chamber and an inner water storage chamber. The inner water storage chamber is located within the outer water storage chamber. A heating element is also provided in the outer water storage chamber. A water outlet pipe is provided at the top of the inner water storage chamber. The upper end of the water outlet pipe is connected to the water outlet of the coffee machine. The lower end of the water outlet pipe extends downward into the interior of the inner water storage chamber. A sleeve is fixedly provided at the top of the inner water storage chamber. The sleeve is fitted onto the upper end of the water outlet pipe, and a gap is left between the inner wall of the sleeve and the outer wall of the water outlet pipe. The sleeve is connected to the temperature-regulating water pipe.

[0005] The adjustable water temperature coffee machine according to embodiments of the present invention has at least the following beneficial effects: The coffee machine of this invention incorporates a long water outlet pipe within the inner water storage chamber, extending a certain length into the chamber. A sleeve is fitted over the outlet pipe, ensuring it does not contact the pipe but rather leaves a gap between them. During coffee brewing, cooler water from the temperature-regulating pipe flows into the gap between the sleeve and the outlet pipe, then flows down the outer wall of the outlet pipe, mixes with the hot water in the inner water storage chamber, and finally exits through the bottom of the outlet pipe to brew the coffee. The advantages of this design are: 1. The outlet pipe extends a certain length into the inner water storage chamber. Since the hot water in the boiler is stratified, with the upper part being hotter and the lower part cooler (the density of hot water changes with temperature; hot water is less dense than cold water, so after heating, the hot water rises to the surface of the colder water, causing stratification), the water flowing into the outlet pipe is not the hottest water. 2. The cooler water entering the inner water storage chamber through the temperature-regulating pipe directly contacts the upper hot water, rapidly cooling it while simultaneously heating the incoming cold water. 3. The cold water flowing down the outer wall of the outlet pipe absorbs heat from the pipe, specifically the temperature of the water flowing out, further cooling the superheated water inside. By using this water flow control method and further adjusting the material and size of the outlet pipe, the temperature of the water used for making coffee can be effectively controlled. The effect is very noticeable, the structure is simple, requiring no complex temperature control mechanisms or systems, and the manufacturing cost is low.

[0006] According to some embodiments of the present invention, the bottom end of the water outlet pipe is located in the lower middle part of the inner water storage cavity. Having the bottom end of the water outlet pipe in the lower middle part of the inner water storage cavity prevents the water flowing into the outlet pipe from being the hottest water from the upper layer, and also prevents the water flowing into the outlet pipe from being the colder water from the bottom that has not been heated in time.

[0007] According to some embodiments of the present invention, the bottom of the inner water storage chamber is provided with an opening. This opening can be a water inlet, and the location of the water inlet at the bottom ensures that newly added water can fully contact the already heated water, thereby rapidly heating up and mixing with the already heated water, maintaining a stable water temperature in the inner water storage chamber, and ensuring that the temperature of the water used for coffee is always within the appropriate range. This opening can also be a return outlet for circulating water.

[0008] According to some embodiments of the present invention, a three-way connector is fixedly provided at the top of the inner water storage cavity. The three-way connector has a first interface, a second interface, and a third interface. The inner wall of the first interface is sealed to the outer wall of the outlet pipe, the inner wall of the second interface is fixed to the outer wall of the sleeve, and the third interface is connected to the temperature-regulating water pipe. The sealed connection between the inner wall of the first interface and the outer wall of the outlet pipe prevents cold water flowing in from the temperature-regulating water pipe from overflowing upwards, ensuring that cold water flows into the inner water storage cavity through the gap between the sleeve and the outlet pipe.

[0009] According to some embodiments of the present invention, the tee connector is T-shaped, with the first port facing upwards and the second port facing downwards. This ensures that the cold water flowing in from the temperature-regulating water pipe can smoothly flow downwards into the inner water storage chamber.

[0010] According to some embodiments of the present invention, a sealing element is provided between the first interface and the water outlet pipe.

[0011] According to some embodiments of the present invention, the temperature-regulating water pipe is connected to a water pump. The water pump is used to pump external cold water into the temperature-regulating water pipe.

[0012] According to some embodiments of the present invention, the water outlet pipe is made of a thermally conductive material. Based on the technical concept of water flow temperature regulation of the present invention, selecting a water outlet pipe material with a high thermal conductivity can make the temperature regulation effect more sensitive.

[0013] According to some embodiments of the present invention, the water outlet pipe is made of copper, aluminum, silver, or a copper alloy. These metallic materials all have good thermal conductivity.

[0014] According to some embodiments of the present invention, a water outlet connector is also included, one end of which is connected to the water outlet of the coffee machine, and the other end is connected to the top of the water outlet pipe. Based on the technical concept of water flow temperature regulation of the present invention, using a water outlet pipe material with a high thermal conductivity can make the temperature regulation effect more sensitive. However, these materials with good thermal conductivity are generally more expensive than ordinary water pipes. Therefore, designing the water outlet pipe to be made of a thermally conductive material and the water outlet connector to be made of an ordinary material can save costs to the greatest extent.

[0015] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 for Figure 1 The enlarged view of point A is shown.

[0017] Reference numerals: Boiler 100, Temperature regulating water pipe 200, External water storage chamber 300, Heating element 310, Internal water storage chamber 400, Water outlet pipe 410, Sleeve 420, Opening 430, T-connector 440, First interface 441, Second interface 442, Third interface 443, Seal 450, Water pump 500, Water outlet pipe 600. Detailed Implementation

[0018] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0019] Reference Figure 1-2 A coffee machine with adjustable water temperature includes a boiler 100, a water outlet pipe 600, and a temperature-adjusting water pipe 200. The temperature-adjusting water pipe 200 is located outside the boiler 100 and is connected to a water pump 500. The boiler 100 has an outer water storage chamber 300 and an inner water storage chamber 400. The inner water storage chamber 400 is located within the outer water storage chamber 300. A heating element 310 is also installed in the outer water storage chamber 300. A copper water outlet pipe 410 is installed at the top of the inner water storage chamber 400. The upper end of the water outlet pipe 410 is connected to the water outlet of the coffee machine through the water outlet pipe 600. The lower end of the water outlet pipe 410 extends downward into the interior of the inner water storage chamber 400. The bottom end of the water outlet pipe 410 is located in the lower middle part of the inner water storage chamber 400. An opening 4 is provided at the bottom of the inner water storage chamber 400. 30. A sleeve 420 is also fixedly installed on the top of the inner water storage cavity 400. The sleeve 420 is fitted onto the upper end of the water outlet pipe 410, and there is a gap between the inner wall of the sleeve 420 and the outer wall of the water outlet pipe 410. The sleeve 420 is connected to the temperature regulating water pipe 200. A T-shaped three-way connector 440 is fixedly installed on the top of the inner water storage cavity 400. The three-way connector 440 has a vertically upward first interface 441, a vertically downward second interface 442, and a horizontal third interface 443. The inner wall of the first interface 441 is sealed to the outer wall of the water outlet pipe 410. The inner wall of the second interface 442 is fixed to the outer wall of the sleeve 420. The third interface 443 is connected to the temperature regulating water pipe 200. A sealing element 450 is provided between the first interface 441 and the water outlet pipe 410.

[0020] Working principle: When making coffee, the cooler water entering through the temperature-regulating water pipe 200 flows into the gap between the sleeve 420 and the outlet pipe 410, then flows down the outer wall of the outlet pipe 410, absorbing the temperature of the hot water inside. This reduces the water temperature at the coffee machine's outlet to some extent. The cold water flowing down the outer wall of the outlet pipe 410 mixes with the hot water in the inner water storage chamber 400, and finally flows out through the bottom of the outlet pipe 410 to brew the coffee. This water flow control method effectively regulates the water temperature for coffee making, with a very noticeable effect. The structure is simple, requiring no complex temperature control mechanisms or systems, resulting in low manufacturing costs.

[0021] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A coffee machine with adjustable water temperature, characterized in that, Includes a boiler (100) and a temperature-regulating water pipe (200), the temperature-regulating water pipe (200) being located outside the boiler (100). The boiler (100) has an outer water storage chamber (300) and an inner water storage chamber (400), the inner water storage chamber (400) being located within the outer water storage chamber (300). The outer water storage chamber (300) also contains a heating element (310). The top of the inner water storage chamber (400) has a water outlet pipe (410). The upper end of the water outlet pipe (410) is connected to the water outlet of the coffee machine. The lower end of the water outlet pipe (410) extends downward into the interior of the inner water storage cavity (400). A sleeve (420) is also fixed on the top of the inner water storage cavity (400). The sleeve (420) is fitted on the upper end of the water outlet pipe (410) and there is a gap between the inner wall of the sleeve (420) and the outer wall of the water outlet pipe (410). The sleeve (420) is connected to the temperature-regulating water pipe (200). A three-way connector (440) is fixedly provided on the top of the inner water storage cavity (400). The three-way connector (440) has a first interface (441), a second interface (442) and a third interface (443). The inner wall of the first interface (441) is sealed to the outer wall of the water outlet pipe (410). The inner wall of the second interface (442) is fixed to the outer wall of the sleeve (420). The third interface (443) is connected to the temperature regulating water pipe (200). The heating element (310) is spaced apart from the inner water storage cavity (400).

2. The coffee machine with adjustable water temperature according to claim 1, characterized in that, The bottom end of the water outlet pipe (410) is located in the lower middle part of the inner water storage cavity (400).

3. The coffee machine with adjustable water temperature according to claim 1, characterized in that, The bottom of the inner water storage cavity (400) is provided with an opening (430).

4. The coffee machine with adjustable water temperature according to claim 1, characterized in that, The tee connector (440) is T-shaped, with the first interface (441) facing vertically upwards and the second interface (442) facing vertically downwards.

5. The coffee machine with adjustable water temperature according to claim 1, characterized in that, A sealing element (450) is provided between the first interface (441) and the water outlet pipe (410).

6. The coffee machine with adjustable water temperature according to claim 1, characterized in that, The temperature-regulating water pipe (200) is connected to a water pump (500).

7. The coffee machine with adjustable water temperature according to claim 1, characterized in that, The water outlet pipe (410) is made of a heat-conducting material.

8. The coffee machine with adjustable water temperature according to claim 7, characterized in that, The water outlet pipe (410) is made of copper, aluminum, silver or copper alloy.

9. The coffee machine with adjustable water temperature according to claim 1, characterized in that, It also includes a water outlet connector (600), one end of which is connected to the water outlet of the coffee machine, and the other end is connected to the top of the water outlet pipe (410).

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