Heating device of coffee brewing system

Abstract

The utility model discloses a heating device of a coffee brewing system, which comprises an outer shell, an inner container, a heating wire and a coil pipe, the inner container is embedded in the outer shell, the heating wire and the coil pipe are both spiral, the heating wire and the coil pipe are both embedded in the outer shell, the heating wire and the coil pipe are arranged on the periphery of the inner container, and the coil pipe is arranged in the inner container. A water inlet pipe and a water outlet pipe are arranged on the inner container, the water outlet pipe is communicated with the coil pipe, and a sensor is arranged at a water outlet of the coil pipe. The inner container capable of storing water and the coil pipe are arranged, so that the water storage capacity is increased, a large cup of coffee can be made conveniently, the water stored in the inner container and the coil pipe is in a warm water state through the heat supply effect of the heating element, the problem that water in the boiler is always in a high-temperature state and scale is prone to being generated is solved, and the service life of the boiler is prolonged. And the temperature difference between the water storage temperature and the water temperature required to be reached when the coffee is discharged from the cup is also reduced, so that the accuracy of controlling the water outlet temperature during heating is conveniently improved, and the extraction taste of the coffee is greatly improved and guaranteed.

Description

Technical Field

[0001] The utility model relates to a heating device for a coffee brewing system, belonging to the technical field of coffee machines. Background Art

[0002] Fully automatic coffee machines are now widely used in homes and stores. Chinese patent 202320130027.7 discloses a fully automatic coffee machine. The main body of the coffee machine is equipped with a grinding and brewing device, a movable water tank, a heating device, a heat preservation device and a microcomputer control device. The heating device is a fluid heating device. Cold water is heated by the heating chamber of the heating device. After hot water is generated, it is extracted. This type of coffee machine is difficult to accurately control the outlet temperature of hot water and is easily affected by the ambient temperature and water flow rate. The temperature difference of a cup of coffee may reach 10~20℃, which has a great impact on the taste of coffee. However, the coffee sold in stores or retail stores has very high requirements for the taste of coffee. In addition, considering safety issues, the power of the heating device of the coffee machine used in the store has strict restrictions and requirements, and the basic requirement is less than 1500W. Due to the limitation of the power of the heating device, the fluid coffee machine can only extract 70~80g of coffee beans at a time. If the amount is increased, the cold water will not be sufficiently heated, which seriously affects the taste of the coffee extraction. Based on the above, this type of coffee machine is mostly small and medium cups. If you want to make a large cup, for example, to make 250g of coffee beans, the action of heating the cold water from room temperature to hot water temperature needs to be repeated 3 to 4 times. The waiting time is long, which seriously affects the efficiency of cup delivery in the store. This is also the pain point of using fluid coffee machines in current stores or retail stores. Therefore, fluid coffee machines are often used to sell only small and medium cups of coffee.

[0003] Based on the above, the utility model designs a heating device for a coffee brewing system, which is very meaningful. Utility Model Content

[0004] The purpose of the utility model is to solve the above problems existing in the prior art, thereby providing a heating device for a coffee brewing system, which solves the problem that the temperature control of a fluid coffee machine is inaccurate and it is difficult to make a large cup of coffee.

[0005] The technical solution of the utility model is: a heating device for a coffee brewing system, comprising an outer shell, an inner tank, a heating wire and a coil, the inner tank being embedded in the outer shell so that the outer shell covers the outer periphery of the inner tank, the heating wire and the coil being spiral-shaped, the heating wire and the coil being embedded in the outer shell, and the heating wire and the coil being located at the outer periphery of the inner tank, a water inlet pipe and a water outlet pipe being provided on the inner tank, the water outlet pipe being connected to the coil, and a sensor being provided at the water outlet of the coil.

[0006] Furthermore, the heating device of the above-mentioned coffee brewing system, wherein: the water outlet pipe is connected to the top of the inner pot, the lower end of the water outlet pipe is communicated with the inner pot, the water inlet pipe extends into the inner pot, and the bottom end of the water inlet pipe is close to the bottom surface of the inner pot, the upper end of the water outlet pipe is communicated with the water inlet of the coil, and the upper end of the water inlet pipe is connected to a water source.

[0007] Furthermore, in the heating device of the coffee brewing system, the coil is sleeved on the outer circumference of the heating element.

[0008] Furthermore, in the heating device of the coffee brewing system, a temperature protection module is provided on the outer shell.

[0009] Furthermore, in the heating device of the coffee brewing system, a connecting bracket is provided on the outer shell.

[0010] The outstanding technical effects of the utility model are mainly reflected in: the heating device adopted by the utility model is provided with an inner tank and a coil, the inner tank and the coil can store water, thereby increasing the water storage capacity, which is convenient for making a large cup of coffee; the coil is arranged to play a certain degree of separation effect, which greatly reduces the influence of the newly flowing cold water in the fluid state on the temperature of the hot water flowing out; and the water stored in the inner tank and the coil is in a warm water state through the heating effect of the heating element, which not only avoids the problem of scale easily generated by the water in the boiler being in a high temperature state all the time, but also reduces the temperature difference between the water storage temperature and the water temperature required to be reached when the coffee is out of the cup, thereby facilitating the improvement of the accuracy of the control of the outlet water temperature during heating, and greatly improving the guarantee of the extracted taste of the coffee; at the same time, when the cold water is heated to the warm water state, the residual heat of the heating device in the process of making the previous cup of coffee can be fully utilized, which is more energy-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the heating device of the coffee brewing system of the utility model;

[0012] Figure 2 It is a schematic diagram of the split heating device of the coffee brewing system of the utility model;

[0013] Figure 3 is a cross-sectional view of a heating device of a coffee brewing system of the utility model;

[0014] Figure 4 It is a schematic diagram of the use of the utility model.

[0015] The meanings of the numbers in the figure are: 1-outer shell; 2-inner tank; 3-heating wire; 4-coil; 5-water outlet pipe; 6-water inlet pipe; 7-connecting bracket; 8-high temperature protection module; 9-sensor; 100-fixing plate; 101-water pump unit; 102-coffee extraction device; 103-grinding device. DETAILED DESCRIPTION

[0016] The present invention is further described in detail below in combination with the accompanying drawings.

[0017] like Figures 1 to 3 As shown, the heating device 2 of the utility model comprises an outer shell 1, an inner tank 2, a heating wire 3 and a coil 4. The inner tank 2 is embedded in the outer shell 1, so that the outer shell 1 covers the outer periphery of the inner tank 2. The heating wire 3 and the coil 4 are both spiral-shaped, and the heating wire 3 and the coil 4 are both embedded in the outer shell 1, and the heating wire 3 and the coil 4 are located at the outer periphery of the inner tank 2. The inner tank 22 is provided with a water inlet pipe 6 and a water outlet pipe 5, the water inlet pipe 6 is connected to a water source, the water outlet pipe 5 is connected to the coil 4, and the water outlet of the coil 4 is provided with a sensor 9, and the sensor 9 is used to detect the outlet water temperature.

[0018] The outlet pipe 5 is connected to the top of the inner tank 2, and the inlet pipe 6 extends into the inner tank 2, and the bottom end of the inlet pipe 6 is close to the bottom surface of the inner tank 2, so that when water is inletted, cold water flows into the bottom of the inner tank 2, and when water is out, water at the top of the inner tank is preferentially discharged. The lower end of the inlet pipe 6 and the lower end of the outlet pipe 5 are both connected to the inner tank 2, and the upper end of the outlet pipe 5 is connected to the water inlet of the coil 4 through a hose (not shown in the figure).

[0019] Preferably, the coil 4 is sleeved on the outer periphery of the heating element 3. The outer shell 1 is provided with a temperature protection module 8. When the temperature protection module 8 detects that the temperature exceeds the warning temperature, the controller immediately stops heating. A connecting bracket 7 is also provided, and the connecting bracket 7 is connected to the outer shell 21.

[0020] The working principle of the utility model is as follows: Figure 4 As shown, the coffee brewing system includes a fixing plate 100, a water pump unit 101, a coffee extraction device 102 and a grinding device 103, and the heating device is fixedly connected to the fixing plate 100 via a connecting bracket 7. The upper end of the water inlet pipe 6 is connected to a water source, the water outlet of the coil 4 is connected to the water pump unit 101 via a hose (not shown in the figure), the water pump unit 101 is connected to the water inlet pipe of the coffee extraction device 102 via a hose (not shown in the figure), and the grinding device 103 is connected to the coffee extraction device 102. The inner tank 2 and the coil 2 of the heating device can be used to store water, and the water storage capacity in the inner tank 2 and the coil 4 is just the water consumption for a large cup of coffee, which is convenient for making a large cup of coffee. The water stored in the inner tank 2 and the coil 4 can be pre-heated to a warm water state and kept in a warm water state through the heating wire. Therefore, the temperature difference between the warm water and the temperature required for coffee water is small. When it is necessary to make coffee, the water stored in the inner tank 2 and the coil 4 is heated again through the heating wire, and the warm water is controlled to be heated to a preset temperature in a short time, and the water temperature is maintained at the preset temperature, and then the hot water is introduced into the coffee extraction device 102 to make coffee.

[0021] In addition, since the coil 4 and the inner tank 2 are provided, and the water inlet pipe 6 extends into the inner tank 2 and is close to the bottom of the inner tank 2, and the water outlet pipe 5 is at the top of the inner tank 2, when hot water is extracted for coffee making, the newly flowing cold water gradually fills from the bottom of the inner tank to the top of the inner tank and then into the coil. In this process, the residual heat in the heating device during the previous coffee making process can be fully utilized to heat the cold water to a certain extent. After the previous coffee making is completed, the residual heat is used in conjunction with the heating element 3 to heat the newly flowing cold water to a warm water state, and the newly flowing cold water gradually fills from the bottom of the inner tank 2 to the top of the inner tank. The water in the coil 4 is the warm water at the top of the inner tank that flows in from the water outlet pipe 5. At this time, the water used to make the previous cup of coffee is in the coil 4, and the coil 4 plays a certain degree of separation role, which greatly reduces the influence of the newly flowing cold water on the temperature of the hot water flowing out, thereby improving the accuracy of the temperature control of the water used for coffee.

[0022] It can be seen from the above description that the heating device used in the utility model is provided with an inner tank 2 and a coil 4, and the inner tank 2 and the coil 4 can store water, thereby increasing the water storage capacity, which is convenient for making a large cup of coffee. The utility model can realize the production of 125g of coffee beans at a time, which is three to four times the amount of a small cup of coffee made at a time in the prior art; the coil 4 is provided to play a certain degree of separation effect, which greatly reduces the influence of the newly inflowing cold water in the fluid state on the temperature of the hot water flowing out; and the water stored in the inner tank 2 and the coil 4 is in a warm water state through the heating effect of the heating element 3, which not only avoids the problem that the water in the boiler is always in a high temperature state and is prone to scale, but also reduces the temperature difference between the water storage temperature and the water temperature required to be reached when the coffee is out of the cup, so as to facilitate the improvement of the accuracy of the control of the outlet water temperature during heating, and greatly improve the extraction taste of the coffee; at the same time, when the cold water is heated to the warm water state, the residual heat of the heating device in the process of making the previous cup of coffee can be fully utilized, which is more energy-saving.

[0023] Of course, the above are only typical examples of the present invention. In addition, the present invention may have many other specific implementations. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A heating device for a coffee brewing system, characterized in that: The utility model comprises an outer shell, an inner shell, a heating wire and a coil, wherein the inner shell is embedded in the outer shell so that the outer shell covers the outer periphery of the inner shell, the heating wire and the coil are both spiral-shaped, and are both embedded in the outer shell, and the heating wire and the coil are located at the outer periphery of the inner shell, a water inlet pipe and a water outlet pipe are provided on the inner shell, the water outlet pipe is connected with the coil, and a sensor is provided at the water outlet of the coil.

2. The heating device of the coffee brewing system according to claim 1, characterized in that: The water outlet pipe is connected to the top of the inner tank, the lower end of the water outlet pipe is connected to the inner tank, the water inlet pipe extends into the inner tank, and the bottom end of the water inlet pipe is close to the bottom surface of the inner tank, the upper end of the water outlet pipe is connected to the water inlet of the coil, and the upper end of the water inlet pipe is connected to a water source.

3. The heating device of the coffee brewing system according to claim 1, characterized in that: The coil is sleeved on the outer periphery of the heating element.

4. The heating device of the coffee brewing system according to claim 1, characterized in that: The outer shell is provided with a temperature protection module.

5. The heating device of the coffee brewing system according to claim 1, characterized in that: A connecting bracket is arranged on the outer shell.

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