Thick film heating body for coffee machine

Abstract

The utility model discloses a thick film heating body for a coffee machine, which comprises a mounting bracket and a heating structure fixedly arranged on the mounting bracket, the heating structure comprises a heating pipe unit, a water inlet piece and a water outlet piece, and the water inlet piece and the water outlet piece are respectively and fixedly arranged at the upper part and the lower part of the heating pipe unit; the heating pipe unit comprises an outer pipe used for heating and an inner pipe arranged in the outer pipe, and the outer wall of the inner pipe is sleeved with a plurality of spiral elements used for prolonging the sufficient heating length of water flow in the vertical direction. The spiral water pipe is reasonable in structural design, water flow passes through the triangular gap between the two spiral elements, the speed of the water flow is reduced, the water flow makes full contact with the inner wall of the heating outer pipe, the water flow is fully heated, the heating path of the water flow is lengthened, the heating time is prolonged, and it is guaranteed that water makes full contact and is heated in the water pipe within the effective length.

Description

Technical Field

[0001] The utility model relates to the field of coffee machines, in particular to a thick film heating element for a coffee machine. Background Art

[0002] Coffee used to be exclusive to a small number of high-end consumer groups. With the development of the economy and the progress of the times, coffee culture has been continuously spreading, and coffee has been integrated into the lives of ordinary people. Nowadays, various coffee machines have entered ordinary citizen families in large numbers. With the popularity of household coffee machines, many people are keen on making coffee at home by themselves. Therefore, fully automatic coffee machines are becoming more and more popular, mainly because they are convenient and fast to use, and realize the whole process automation from grinding coffee beans to brewing coffee with hot water.

[0003] In the existing heating pipe structure for heating water in a coffee machine, the heating channel for water to flow through and be heated is straight between the inner pipe and the outer pipe. However, due to the relatively fast water flow rate, the heating time is short, resulting in insufficient heating, affecting the heating effect, large heat loss, and wasting energy. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a thick film heating element for a coffee machine in view of the current situation of the prior art.

[0005] The technical solution adopted by the utility model to solve the above technical problem is: a thick film heating element for a coffee machine, including a mounting bracket and a heating structure fixedly arranged on the mounting bracket, characterized in that: the heating structure includes a heating pipe unit, a water inlet part and a water outlet part, and the water inlet part and the water outlet part are respectively fixedly arranged on the upper part and the lower part of the heating pipe unit; the heating pipe unit includes an outer pipe for generating heat and an inner pipe arranged in the outer pipe, and a plurality of spiral elements for extending the sufficient heating length of the water flow are sleeved on the outer wall of the inner pipe along the vertical direction;

[0006] The inner side of the spiral element is closely arranged against the outer wall of the inner pipe, and the upper and lower spiral elements are closely arranged against each other. A gap for the water flow to pass through is arranged between the outer side of the spiral element and the inner wall of the outer pipe, and a triangular gap for the water flow to fully contact and generate heat is arranged between two spiral elements, and the triangular gap is closely arranged against the inner wall of the outer pipe.

[0007] Preferably, the water inlet part is provided with a water inlet and a water inlet channel communicated with the water inlet, and the other end of the water inlet channel is communicated with the inside of the heating pipe unit.

[0008] Preferably, sealing rings for blocking the water flow are assembled between the water inlet part and the inner wall of the outer pipe and between the water inlet part and the inner wall of the inner pipe.

[0009] Preferably, a water outlet and a water outlet channel communicating with the water outlet are provided inside the water outlet member, and the other end of the water outlet channel communicates with the inside of the heating tube unit.

[0010] Preferably, sealing rings for blocking water flow are assembled between the water outlet member and the inner wall of the outer tube and between the water outlet member and the inner wall of the inner tube.

[0011] Preferably, both the water inlet member and the water outlet member are fixedly arranged on the mounting bracket through fixing rods arranged on both sides of the mounting bracket, and both ends of each fixing rod are fixed by bolts.

[0012] Preferably, at least one thermostat for controlling the temperature is fixedly arranged on the mounting bracket, and the inner side of the thermostat is in contact connection with the outer wall of the outer tube.

[0013] Compared with the prior art, the advantages of the present utility model are as follows: the water flow passes through the triangular gap between the two spiral elements, which slows down the water flow speed and enables the water flow to fully contact the inner wall of the heated outer tube, so that the water flow is fully heated. This is equivalent to lengthening the heating path of the water flow and increasing the heating time to ensure that the water has sufficient contact and heat absorption in the water pipe within an effective length. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic cross-sectional structure diagram of the present utility model;

[0015] Figure 2 is a schematic structure diagram of the present utility model;

[0016] Figure 3 is an exploded structure diagram of the present utility model.

[0017] Reference numerals: 1, mounting bracket; 2, water inlet member; 3, water outlet member; 4, outer tube; 5, inner tube; 6, spiral element; 7, triangular gap; 8, water inlet; 9, water inlet channel; 10, sealing ring; 11, water outlet; 12, water outlet channel; 13, fixing rod; 14, bolt; 15, thermostat. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The following will disclose multiple embodiments of the present utility model in the form of drawings. For the sake of clarity, many practical details will be described together in the following description. However, it should be understood that these practical details are not used to limit the present utility model. That is to say, in some embodiments of the present utility model, these practical details are not necessary. In addition, for the purpose of simplifying the drawings, some well-known and commonly used structures and components will be shown in a simple schematic manner in the drawings.

[0019] It should be noted that all directional indications in the embodiments of the present utility model, such as up, down, left, right, front, back, etc., are only used to explain the relative positional relationship, movement conditions, etc. between components in a specific posture (as shown in the attached drawings). If this specific posture changes, the directional indications will also change accordingly.

[0020] Moreover, in addition to being used to represent the orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "up" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the present utility model can be understood according to the specific situation.

[0021] In addition, the terms "installed", "set", "provided with", "connected", "coupled", "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there is an internal connection between two devices, elements or components. The connection methods involved in this article are prior arts and have not been improved, which are all common knowledge of those skilled in the art. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific situation.

[0022] In addition, in the present utility model, the descriptions such as "first", "second", etc. are only for descriptive purposes, and do not particularly refer to the order or sequence, nor are they used to limit the present utility model. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" can explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model. Embodiment 1

[0023] As Figures 1 to 3 shown, the present utility model provides a thick film heating element for a coffee machine, which includes a mounting bracket 1 and a heating structure fixedly arranged on the mounting bracket 1; specifically, the heating structure includes a heating tube unit, a water inlet member 2 and a water outlet member 3. The water inlet member 2 and the water outlet member 3 are respectively fixedly arranged on the upper and lower parts of the heating tube unit; the heating tube unit includes an outer tube 4 for generating heat and an inner tube 5 arranged in the outer tube 4. A plurality of spiral elements 6 for extending the sufficient heating length of the water flow are sleeved on the outer wall of the inner tube 5 along the vertical direction.

[0024] The inner side of the spiral element 6 is closely arranged against the outer wall of the inner pipe 5, the two spiral elements 6 are closely arranged up and down, and a gap for water flow is provided between the outer side of the spiral element 6 and the inner wall of the outer pipe 4; specifically, a triangular gap 7 for enabling the water flow to fully contact and generate heat is provided between the two spiral elements 6, and the triangular gap 7 is closely arranged against the inner wall of the outer pipe 4. All the water flow only passes through the triangular gap 7 between the inner pipe 5 and the outer pipe 4, and the water flow does not pass through the pores between the outer wall of the inner pipe 5 and the spiral element 6, ensuring the full heating of all the water flow.

[0025] The water inlet part 2 is provided with a water inlet 8 and a water inlet channel 9 communicated with the water inlet 8, and the other end of the water inlet channel 9 is communicated with the inside of the heating pipe unit.

[0026] Sealing rings 10 for blocking the water flow are assembled between the water inlet part 2 and the inner wall of the outer pipe 4 and between the water inlet part 2 and the inner wall of the inner pipe 5.

[0027] The water outlet part 3 is provided with a water outlet 11 and a water outlet channel 12 communicated with the water outlet 11, and the other end of the water outlet channel 12 is communicated with the inside of the heating pipe unit.

[0028] Sealing rings 10 for blocking the water flow are assembled between the water outlet part 3 and the inner wall of the outer pipe 4 and between the water outlet part 3 and the inner wall of the inner pipe 5.

[0029] Both the water inlet part 2 and the water outlet part 3 are fixedly arranged on the mounting bracket 1 through fixing rods 13 arranged on both sides of the mounting bracket 1; specifically, both ends of each fixing rod 13 are fixed by bolts 14.

[0030] At least one temperature controller 15 for controlling the temperature is fixedly arranged on the mounting bracket 1, and the inner side of the temperature controller 15 is in contact connection with the outer wall of the outer pipe 4. The working principle and electrical connection mode of the temperature controller 15 are technical means that are easy to think of and commonly used by those skilled in the art, so no more details will be described.

[0031] The working principle of the present utility model is as follows: Water enters from the water inlet 8 and flows into the heating pipe unit through the water inlet channel 9. Since sealing rings 10 for blocking the water flow are assembled between the water inlet part 2 and the inner wall of the outer pipe 4 and between the water inlet part 2 and the inner wall of the inner pipe 5, and the inner side of the spiral element 6 is closely arranged against the outer wall of the inner pipe 5, the water flow can only pass through the gap between the outer side of the spiral element 6 and the inner wall of the outer pipe 4. Since the outer pipe 4 itself has a heating function, when the water flow passes through the triangular gap 7 between every two spiral elements 6 in sequence, it can fully contact the inner wall of the outer pipe 4. And due to the setting of the spiral element 6, the contact time of the water flow with the inner wall of the outer pipe 4 (i.e., the heating time) is longer than that of the straight-through heating channel without the spiral element 6, enabling the water to be fully heated. The heated hot water then enters the water outlet part 3 through the water outlet channel 12 and flows out from the water outlet 11.

[0032] In the present utility model, the outer tube 4 itself has a heating function, that is, it is equivalent to the technology of a heating element, which is an easily conceivable and commonly used technical means for those skilled in the art, so it will not be elaborated too much.

[0033] The advantages of the present utility model are as follows: The water flow passes through the triangular gap 7 between the two spiral elements 6, which slows down the water flow speed and enables the water flow to fully contact the inner wall of the heat-generating outer tube 4, so that the water flow is fully heated. This is equivalent to lengthening the heating path of the water flow and increasing the heating time to ensure that the water has sufficient contact and heat absorption in the water pipe within an effective length. Embodiment 2

[0034] Different from Embodiment 1, in this embodiment, the outer tube 4 itself does not have a heating function. By fixing a number of heating sheets on the outer wall of the outer tube 4, the heat of the heating sheets is dissipated to the flowing water in contact with the inner wall of the outer tube 4 through the heat-conducting outer tube 4 to heat the water. The heating sheets can also be replaced by other heating structures that conform to the present utility model. Other structures are the same as those in Embodiment 1.

[0035] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "examples", "specific examples" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0036] The standard parts used in the present utility model can all be purchased from the market. The special-shaped parts can be customized according to the records in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, welding, and pasting that are mature in the prior art, and will not be elaborated here.

[0037] The above content is only the preferred embodiment of the present utility model. For those of ordinary skill in the art, according to the idea of the present utility model, various changes and modifications can be made in the specific implementation manners and application scopes. The content of this specification should not be construed as a limitation to the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included within the scope of the claims of the present utility model.

Claims

1. A thick film heating element for a coffee machine, comprising a mounting bracket and a heating structure fixedly arranged on the mounting bracket, characterized in that: The heating structure includes a heating tube unit, a water inlet member, and a water outlet member. The water inlet member and the water outlet member are respectively fixed to the upper and lower parts of the heating tube unit. The heating tube unit includes an outer tube for generating heat and an inner tube disposed inside the outer tube. A plurality of spiral elements for extending the sufficient heating length of the water flow are sleeved on the outer wall of the inner tube along the vertical direction. The inner side of the spiral element is closely arranged with the outer wall of the inner tube, and the upper and lower spiral elements are closely arranged. A gap for the water flow to pass through is provided between the outer side of the spiral element and the inner wall of the outer tube. A triangular gap for the water flow to fully contact the heat generation is provided between two spiral elements, and the triangular gap is closely arranged with the inner wall of the outer tube.

2. The thick film heating element for a coffee machine according to claim 1, characterized in that: The water inlet member is provided with a water inlet and a water inlet channel communicating with the water inlet. The other end of the water inlet channel communicates with the inside of the heating tube unit.

3. The thick film heating element for a coffee machine according to claim 1, characterized in that: Sealing rings for blocking the water flow are assembled between the water inlet member and the inner wall of the outer tube and between the water inlet member and the inner wall of the inner tube.

4. The thick film heating element for a coffee machine according to claim 1, characterized in that: The water outlet member is provided with a water outlet and a water outlet channel communicating with the water outlet. The other end of the water outlet channel communicates with the inside of the heating tube unit.

5. A thick film heating element for a coffee machine according to claim 1, characterized in that: Sealing rings for blocking the water flow are assembled between the water outlet member and the inner wall of the outer tube and between the water outlet member and the inner wall of the inner tube.

6. The thick film heating element for a coffee machine according to claim 1, characterized in that: Both the water inlet member and the water outlet member are fixed to the mounting bracket through fixing rods provided on both sides of the mounting bracket, and both ends of each fixing rod are fixed by bolts.

7. The thick film heating element for a coffee machine according to claim 1, characterized in that: At least one thermostat for controlling the temperature is fixedly provided on the mounting bracket, and the inner side of the thermostat is in contact connection with the outer wall of the outer tube.

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