Heating runner structure of coffee machine

Abstract

The utility model discloses a heating runner structure of a coffee machine, which belongs to the technical field of heating structures and comprises an inner tube and an outer tube which are transversely arranged, the inner tube is arranged inside the outer tube, and a plurality of runner component parts which are alternately staggered are axially arranged on the inner tube and the outer tube. And all the flow channel forming parts are arranged at intervals and form a flow channel between the inner pipe and the outer pipe. According to the scheme, the inner pipe and the outer pipe are transversely arranged, so that the flow channel between the inner pipe and the outer pipe is transversely arranged, water can flow on the axial flow channel between the inner pipe and the outer pipe and slowly goes up and down in the heater, it is guaranteed that the flow channel is filled with flowing water, and the top of the heating flow channel is inevitably filled with the flowing water after circulation is completed; therefore, the condition of dry burning at the top of the heating runner is avoided, and the heating effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a heating structure more specifically, it relates to a coffee machine's heating runner structure. BACKGROUND

[0002] The quickening of modern life rhythm, people's demand for coffee is increasing, not only limited to enjoy coffee at home or professional coffee shop, more hope can conveniently drink coffee in the outdoors, journey or office place. Based on this, the coffee machine arrangement scene range is increasingly extensive. The current market exists coffee machine design diversity, and all have heating structure, in espresso coffee machine, the transversely placed thick film heater, because of the influence of water gravity, will appear the phenomenon of top water shortage, lead to top dry burning, appear temperature too high phenomenon.

[0003] For example: China patent announcement number CN220135725, announcement day is December 5, 2023, the utility model's name is thick film heating assembly and hot beverage equipment, the application discloses a kind of heating assembly of hot beverage equipment, including water pipeline and thick film structure, thick film structure includes heat pipe and heating film, heating film is attached on the wall surface of heat pipe, heat pipe is sealedly connected with water pipeline and is enclosed with flow channel groove to form heating flow channel.The application can guarantee the heating effect of thick film heating assembly, improve the service life of thick film heating assembly, but the water inlet and water outlet of the application are vertically arranged on the outer surface of the heat pipe, and the thick film assembly is prone to dry burning at the top of the heat pipe, resulting in a local temperature too high at the top of the heat pipe. UTILITY MODEL CONTENT

[0004] The utility model overcomes the problem that the existing heating flow channel is prone to dry burning, provides a kind of heating flow channel structure of coffee machine, and the present application can avoid the phenomenon that the top of heat pipe appears dry burning during the heating process of coffee machine, improve the heating effect of coffee machine.

[0005] In order to solve the above technical problems, the utility model adopts the following technical scheme: a kind of heating flow channel structure of coffee machine, including the inner tube and outer tube of transverse arrangement, the inner tube is located in the outer tube, the inner tube and the outer tube are axially arranged with several flow channel components that are alternately staggered, each flow channel component is arranged and is formed flow channel between the inner tube and outer tube. In the present application, the flow channel between the inner tube and outer tube is also transversely arranged by transversely arranging the inner tube and outer tube, and water can flow in the axial flow channel between the inner tube and outer tube, slowly up and down in the heater, to ensure that the flow channel is full of water, and the water circulation will inevitably fill the top of the heating flow channel, so as to avoid the dry burning of the top of the heating flow channel, and improve the heating effect.

[0006] Preferably, the flow channel component is arranged on the inner wall of the outer tube and is integrated with the outer tube. The flow channel component is integrally formed with the outer tube, that is, the flow channel component is fixed on the inner wall of the outer tube and then assembled with the inner tube, thereby reducing the process difficulty of the heating structure.

[0007] Preferably, the flow channel component is arranged on the outer wall of the inner tube and is integrated with the inner tube. The flow channel component is integrally formed with the inner tube, that is, the flow channel component is fixed on the outer wall of the inner tube and then assembled with the outer tube, thereby reducing the process difficulty of the heating structure.

[0008] Preferably, the outer tube is further provided with a thick-film heating assembly, and the thick-film heating assembly comprises heating resistors uniformly distributed along the axial direction of the outer tube. The thick-film heating assembly is arranged on the outer tube to heat the flow channel between the outer tube and the inner tube. The thick-film heating assembly is annularly arranged on the outer wall of the outer tube, and mainly comprises heating resistors. After being electrified, the heating resistors generate heat to heat the flow channel between the outer tube and the inner tube. The axial distribution of the heating resistors along the axial direction of the outer tube and the inner tube can ensure the axial heating effect of the flow channel.

[0009] Preferably, the outer tube is provided with water inlet holes and water outlet holes distributed along the axial direction of the outer tube, and the water inlet holes and the water outlet holes correspond to the interval positions between the flow channel components. The water inlet holes and the water outlet holes are respectively used for water inlet and water outlet of the flow channel, so that the water inlet holes and the water outlet holes need to be located in the interval between the two flow channel components to ensure that water can normally enter the flow channel from the water inlet holes and smoothly flow out from the water outlet holes.

[0010] Preferably, a separation assembly is arranged between the two flow channel components corresponding to the positions of the water inlet holes and the water outlet holes, and the water inlet holes and the water outlet holes are respectively located on the two sides of the separation assembly. The separation assembly is used to separate the water inlet holes and the water outlet holes to avoid that water in the flow channel directly flows out from the water outlet holes after entering the water inlet holes.

[0011] Preferably, the inner tube is provided with a limiting portion at one end, and the flow channel component abuts against the limiting portion and forms a sealed fit. The limiting portion of the inner tube can limit the outer tube to ensure the accurate position of the inner tube and the outer tube. Meanwhile, the limiting portion is also a part of the flow channel. The limiting portion, the flow channel component, the inner tube and the outer tube form the flow channel, and the limiting portion needs to form a sealed fit with the flow channel component, the inner tube and the outer tube, thereby ensuring the sealing of the flow channel.

[0012] Preferably, the radial dimension of the limiting part is adapted to the radial dimension of the inner wall of the outer tube to form a sealing fit. The adaptation of the radial dimension of the limiting part to the radial dimension of the inner wall of the outer tube ensures that the inner and outer tubes can fit together and facilitates the formation of a sealing fit.

[0013] Preferably, a collar is fitted around the end of the inner tube away from the limiting part, and the collar forms a sealed connection with both the inner tube and the outer tube. The collar can limit the position of the outer tube on the inner tube. The collar, together with the limiting part, can ensure that the position of the outer tube relative to the inner tube is fixed. At the same time, the collar also plays a sealing role between the inner tube and the outer tube.

[0014] Compared with the prior art, the beneficial effects of this utility model are: (1) The thick film heater is placed horizontally, and water can flow in the axial flow channel, so that the water in the flow channel can move slowly up and down in the heater, avoiding the phenomenon of dry burning at the top of the heater; (2) The area of ​​the water inlet hole is small, and it is not easy to form stagnant water; (3) The structure is simple, which can simplify the manufacturing and assembly process. Attached Figure Description

[0015] Figure 1 This is the front view of the present invention.

[0016] Figure 2 This is an isometric view of the present invention.

[0017] Figure 3 This is a schematic diagram of Embodiment 1 of the present utility model.

[0018] Figure 4 This is a schematic diagram of Embodiment 2 of the present invention.

[0019] Figure 5 This is a schematic diagram of Embodiment 3 of the present invention.

[0020] In the diagram: 1. Inner tube, 2. Outer tube, 3. Flow channel components, 4. Thick film heating assembly, 5. Heating resistor, 6. Water inlet, 7. Water outlet, 8. Separator assembly, 9. Limiting part, 10. Collar, 11. Nozzle. Detailed Implementation

[0021] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0022] Example 1: As Figures 1 to 3The illustrated heating flow channel structure of a coffee machine includes an inner tube 1 and an outer tube 2, both of which are hollow circular tubes. The inner tube 1 is slightly smaller than the outer tube 2, and its length is slightly longer than that of the outer tube 2. The outer tube 2 is fitted over the inner tube 1, and a certain gap is formed between the inner tube 1 and the outer tube 2. A flow channel component 3 is arranged in the gap between the inner tube 1 and the outer tube 2, running along the axial direction of the inner tube 1 and the outer tube 2. The flow channel component 3 is embedded between the inner tube 1 and the outer tube 2 and forms a sealed connection with them; that is, the flow channel component 3, the outer tube 2, and the inner tube 1 are all independent structures. Specifically, the flow channel component 3 can be a short flow channel rod. Furthermore, the flow channel components 3 are arranged circumferentially along the inner tube 1 and the outer tube 2, and two adjacent flow channel components 3 are axially staggered in the inner tube 1 and the outer tube 2, forming a flow channel between the inner tube 1 and the outer tube 2; that is, one end of the flow channel component 3 extends to one end of the inner tube 1, and the other end of the flow channel component 3 forms a certain distance from the other end of the inner tube 1. The flow channel components 3 adjacent to this flow channel component 3 are arranged in the opposite form, thus forming an S-shaped flow channel between different flow channel components 3.

[0023] The outer pipe 2 is also provided with an inlet hole 6 and an outlet hole 7, which connect the flow channel between the inner pipe 1 and the outer pipe 2. That is, the inlet hole 6 and the outlet hole 7 are arranged at the location of the flow channel. Specifically, the inlet hole 6 and the outlet hole 7 are also arranged at the same axial position of the outer pipe 2. After the water enters the flow channel between the inner pipe 1 and the outer pipe 2, it will eventually be discharged from the outlet hole 7. The inlet hole 6 and the outlet hole 7 are also provided with nozzles 11 for connecting water pipes and other structures to allow water to flow into the flow channel.

[0024] To prevent water from entering through the inlet hole 6 and exiting directly through the outlet hole 7, a separator assembly 8 is arranged between the two flow channel components 3 corresponding to the inlet hole 6 and the outlet hole 7. The separator assembly 8 consists of three sets of separator blocks, which are arranged between the two flow channel components 3 and connected to them to form a sealed connection. Simultaneously, the separator assembly 8 also forms a sealed connection with the inner tube 1 and the outer tube 2. The separator assembly 8 separates the inlet hole 6 and the outlet hole 7. When water enters through the inlet hole 6, it enters the flow channel on one side of the separator assembly 8, flows along the S-shaped flow channel, and finally exits through the outlet hole 7 beside the inlet hole 6. This ensures that the water flows through the gap between the inner tube 1 and the outer tube 2, and also prevents empty areas from appearing in the flow channel, thus avoiding dry burning between the inner tube 1 and the outer tube 2.

[0025] Specifically, since the inner pipe 1 and the outer pipe 2 are arranged horizontally, the inlet hole 6 and the outlet hole 7 can be arranged at any horizontal height position to ensure that the flow channel between the inner pipe 1 and the outer pipe 2 is filled with water. Furthermore, the inlet hole 6 and the outlet hole 7 are arranged in the same axial position, which can reduce the space of the inlet hole 6 and the outlet hole 7 and reduce the stagnant water in the flow channel.

[0026] A thick-film heating element 4 is arranged on the outer surface of the outer tube 2. Several heating resistors 5 are arranged on the thick-film heating element 4. The thick-film heating element 4 has a rectangular structure and is attached to the outer surface of the outer tube 2, so that the heating resistors 5 are also distributed along the axial direction of the outer tube 2, which is more conducive to heating the axial flow channel. When the thick-film heating element 4 is arranged on the outer tube, a certain interval is maintained between its beginning and end, and the water inlet 6 and water outlet 7 are arranged in the interval, providing a certain arrangement space for the water inlet 6 and water outlet 7.

[0027] A limiting part 9 is provided at one end of the inner tube 1. The limiting part 9 is a circular ring structure with a radial dimension larger than the outer diameter of the inner tube 1, and is integrally formed with the inner tube 1. The radial dimension of the limiting part 9 is adapted to the radial dimension of the inner wall of the outer tube 2. After the outer tube 2 is assembled with the inner tube 1 and the flow channel components 3, a collar 10 is fitted onto the other end of the inner tube 1 to limit the position of the outer tube 2 on the inner tube 1 and to seal the ends of the inner tube 1 and outer tube 2. Half of the spaced flow channel components 3 have one end abutting against the limiting part 9 to form a sealed connection, while the other end remains spaced from the collar 10; the other half of the spaced flow channel components 3 have one end abutting against the collar 10 to form a sealed connection, while the other end remains spaced from the limiting part 9. That is, the flow channel is arranged in an S-shape between the inner tube 1 and the outer tube 2. Specifically, the above sealing treatment can be achieved by welding or other sealing measures.

[0028] Example 2: Figure 1 , Figure 2 and Figure 4 The illustrated heating flow channel structure of a coffee machine includes an inner tube 1 and an outer tube 2, both of which are hollow circular tubes. The inner tube 1 is slightly smaller than the outer tube 2, and its length is slightly longer than that of the outer tube 2. The outer tube 2 is fitted over the inner tube 1, forming a gap between them. A flow channel component 3, arranged axially along both the inner and outer tubes, is placed within this gap. The flow channel component 3 is located on the inner wall of the outer tube 2 and is integrally formed with the outer tube 2. Specifically, the flow channel component 3 can be a short flow channel rod. This embodiment simplifies the structure and reduces assembly complexity. The integral structure of the outer tube 2 can be manufactured using methods such as precision casting, metal 3D printing, milling and turning, or extrusion molding.

[0029] Furthermore, the flow channel components 3 are arranged circumferentially along the inner tube 1 and the outer tube 2, and two adjacent flow channel components 3 are axially staggered in the inner tube 1 and the outer tube 2, forming a flow channel between the inner tube 1 and the outer tube 2; that is, one end of the flow channel component 3 extends to one end of the outer tube 2, and the other end of the flow channel component 3 forms a certain distance from the other end of the outer tube 2. The flow channel components 3 adjacent to this flow channel component 3 are arranged in the opposite form, thus forming an S-shaped flow channel between different flow channel components 3.

[0030] The outer pipe 2 is also provided with an inlet hole 6 and an outlet hole 7, which connect the flow channel between the inner pipe 1 and the outer pipe 2. That is, the inlet hole 6 and the outlet hole 7 are arranged at the location of the flow channel. Specifically, the inlet hole 6 and the outlet hole 7 are also arranged at the same axial position of the outer pipe 2. After the water enters the flow channel between the inner pipe 1 and the outer pipe 2, it will eventually be discharged from the outlet hole 7. The inlet hole 6 and the outlet hole 7 are also provided with nozzles 11 for connecting water pipes and other structures to allow water to flow into the flow channel.

[0031] To prevent water from entering through the inlet hole 6 and exiting directly through the outlet hole 7, a separator assembly 8 is arranged between the two flow channel components 3 corresponding to the inlet hole 6 and the outlet hole 7. The separator assembly 8 consists of three sets of separator blocks, which are arranged between the two flow channel components 3 and connected to them to form a sealed connection. Simultaneously, the separator assembly 8 also forms a sealed connection with the inner tube 1 and the outer tube 2. The separator assembly 8 separates the inlet hole 6 and the outlet hole 7. When water enters through the inlet hole 6, it enters the flow channel on one side of the separator assembly 8, flows along the S-shaped flow channel, and finally exits through the outlet hole 7 beside the inlet hole 6. This ensures that the water flows through the gap between the inner tube 1 and the outer tube 2, and also prevents empty areas from appearing in the flow channel, thus avoiding dry burning between the inner tube 1 and the outer tube 2.

[0032] Specifically, since the inner pipe 1 and the outer pipe 2 are arranged horizontally, the inlet hole 6 and the outlet hole 7 can be arranged at any horizontal height position to ensure that the flow channel between the inner pipe 1 and the outer pipe 2 is filled with water. Furthermore, the inlet hole 6 and the outlet hole 7 are arranged in the same axial position, which can reduce the space of the inlet hole 6 and the outlet hole 7 and reduce the stagnant water in the flow channel.

[0033] A thick-film heating element 4 is arranged on the outer surface of the outer tube 2. Several heating resistors 5 are arranged on the thick-film heating element 4. The thick-film heating element 4 has a rectangular structure and is attached to the outer surface of the outer tube 2, so that the heating resistors 5 are also distributed along the axial direction of the outer tube 2, which is more conducive to heating the axial flow channel. When the thick-film heating element 4 is arranged on the outer tube, a certain interval is maintained between its beginning and end, and the water inlet 6 and water outlet 7 are arranged in the interval, providing a certain arrangement space for the water inlet 6 and water outlet 7.

[0034] A limiting part 9 is provided at one end of the inner tube 1. The limiting part 9 is a circular ring structure with a radial dimension larger than the outer diameter of the inner tube 1, and is integrally formed with the inner tube 1. The radial dimension of the limiting part 9 is adapted to the radial dimension of the inner wall of the outer tube 2. After the outer tube 2 is assembled with the inner tube 1 and the flow channel components 3, a collar 10 is fitted onto the other end of the inner tube 1 to limit the position of the outer tube 2 on the inner tube 1 and to seal the ends of the inner tube 1 and outer tube 2. Half of the spaced flow channel components 3 have one end abutting against the limiting part 9 to form a sealed connection, while the other end remains spaced from the collar 10; the other half of the spaced flow channel components 3 have one end abutting against the collar 10 to form a sealed connection, while the other end remains spaced from the limiting part 9. That is, the flow channel is arranged in an S-shape between the inner tube 1 and the outer tube 2. Specifically, the above sealing treatment can be achieved by welding or other sealing measures.

[0035] Example 3: As Figure 1 , Figure 2 and Figure 5 The illustrated heating flow channel structure of a coffee machine includes an inner tube 1 and an outer tube 2, both of which are hollow circular tubes. The inner tube 1 is slightly smaller than the outer tube 2, and its length is slightly longer than that of the outer tube 2. The outer tube 2 is fitted over the inner tube 1, forming a gap between them. A flow channel component 3, arranged along the axial direction of both the inner and outer tubes, is placed within this gap. The flow channel component 3 is located on the outer surface of the inner tube 1 and is integrally formed with the inner tube 1. Specifically, the flow channel component 3 can be a short flow channel rod. This embodiment simplifies the structure and reduces assembly complexity. The integral structure of the inner tube 1 can be manufactured using methods such as precision casting, metal 3D printing, milling and turning, or extrusion molding.

[0036] Furthermore, the flow channel components 3 are arranged circumferentially along the inner tube 1 and the outer tube 2, and two adjacent flow channel components 3 are axially staggered in the inner tube 1 and the outer tube 2, forming a flow channel between the inner tube 1 and the outer tube 2; that is, one end of the flow channel component 3 extends to one end of the inner tube 1, and the other end of the flow channel component 3 forms a certain distance from the other end of the inner tube 1. The flow channel components 3 adjacent to this flow channel component 3 are arranged in the opposite form, thus forming an S-shaped flow channel between different flow channel components 3.

[0037] The outer pipe 2 is also provided with an inlet hole 6 and an outlet hole 7, which connect the flow channel between the inner pipe 1 and the outer pipe 2. That is, the inlet hole 6 and the outlet hole 7 are arranged at the location of the flow channel. Specifically, the inlet hole 6 and the outlet hole 7 are also arranged at the same axial position of the outer pipe 2. After the water enters the flow channel between the inner pipe 1 and the outer pipe 2, it will eventually be discharged from the outlet hole 7. The inlet hole 6 and the outlet hole 7 are also provided with nozzles 11 for connecting water pipes and other structures to allow water to flow into the flow channel.

[0038] To prevent water from entering through the inlet hole 6 and exiting directly through the outlet hole 7, a separator assembly 8 is arranged between the two flow channel components 3 corresponding to the inlet hole 6 and the outlet hole 7. The separator assembly 8 consists of three sets of separator blocks, which are arranged between the two flow channel components 3 and connected to them to form a sealed connection. Simultaneously, the separator assembly 8 also forms a sealed connection with the inner tube 1 and the outer tube 2. The separator assembly 8 separates the inlet hole 6 and the outlet hole 7. When water enters through the inlet hole 6, it enters the flow channel on one side of the separator assembly 8, flows along the S-shaped flow channel, and finally exits through the outlet hole 7 beside the inlet hole 6. This ensures that the water flows through the gap between the inner tube 1 and the outer tube 2, and also prevents empty areas from appearing in the flow channel, thus avoiding dry burning between the inner tube 1 and the outer tube 2.

[0039] Specifically, since the inner pipe 1 and the outer pipe 2 are arranged horizontally, the inlet hole 6 and the outlet hole 7 can be arranged at any horizontal height position to ensure that the flow channel between the inner pipe 1 and the outer pipe 2 is filled with water. Furthermore, the inlet hole 6 and the outlet hole 7 are arranged in the same axial position, which can reduce the space of the inlet hole 6 and the outlet hole 7 and reduce the stagnant water in the flow channel.

[0040] A thick-film heating element 4 is arranged on the outer surface of the outer tube 2. Several heating resistors 5 are arranged on the thick-film heating element 4. The thick-film heating element 4 has a rectangular structure and is attached to the outer surface of the outer tube 2, so that the heating resistors 5 are also distributed along the axial direction of the outer tube 2, which is more conducive to heating the axial flow channel. When the thick-film heating element 4 is arranged on the outer tube, a certain interval is maintained between its beginning and end, and the water inlet 6 and water outlet 7 are arranged in the interval, providing a certain arrangement space for the water inlet 6 and water outlet 7.

[0041] A limiting part 9 is provided at one end of the inner tube 1. The limiting part 9 is a circular ring structure with a radial dimension larger than the outer diameter of the inner tube 1, and is integrally formed with the inner tube 1. The radial dimension of the limiting part 9 is adapted to the radial dimension of the inner wall of the outer tube 2. After the outer tube 2 is assembled with the inner tube 1 and the flow channel components 3, a collar 10 is fitted onto the other end of the inner tube 1 to limit the position of the outer tube 2 on the inner tube 1 and to seal the ends of the inner tube 1 and outer tube 2. Half of the spaced flow channel components 3 have one end abutting against the limiting part 9 to form a sealed connection, while the other end remains spaced from the collar 10; the other half of the spaced flow channel components 3 have one end abutting against the collar 10 to form a sealed connection, while the other end remains spaced from the limiting part 9. That is, the flow channel is arranged in an S-shape between the inner tube 1 and the outer tube 2. Specifically, the above sealing treatment can be achieved by welding or other sealing measures.

Claims

1. A heating flow channel structure for a coffee machine, characterized in that, It includes an inner tube and an outer tube arranged laterally. The inner tube is located inside the outer tube. The inner tube and the outer tube are axially arranged with several flow channel components that are alternately staggered. Each of the flow channel components is arranged at intervals and forms a flow channel between the inner tube and the outer tube.

2. The heating flow channel structure of a coffee machine according to claim 1, characterized in that, The flow channel components are independent structures from the outer tube and the inner tube.

3. The heating flow channel structure of a coffee machine according to claim 1, characterized in that, The flow channel component is located on the inner wall of the outer tube, and the flow channel component and the outer tube are an integral structure.

4. The heating flow channel structure of a coffee machine according to claim 1, characterized in that, The flow channel component is located on the outer wall of the inner tube, and the flow channel component and the inner tube are an integral structure.

5. A heating flow channel structure for a coffee machine according to any one of claims 1 to 4, characterized in that, The outer tube is also provided with a thick film heating assembly, which includes heating resistors that are uniformly distributed along the axial direction of the outer tube.

6. The heating flow channel structure of a coffee machine according to claim 5, characterized in that, The outer tube is provided with inlet holes and outlet holes distributed along the axial direction of the outer tube, and the inlet holes and outlet holes correspond to the interval positions between the flow channel components.

7. The heating flow channel structure of a coffee machine according to claim 6, characterized in that, Corresponding to the positions of the water inlet and the water outlet, a separator is arranged between the two flow channel components, with the water inlet and the water outlet located on opposite sides of the separator.

8. A heating flow channel structure for a coffee machine according to any one of claims 1 to 4, characterized in that, One end of the inner tube is provided with a limiting part, and the flow channel component abuts against the limiting part to form a sealed fit.

9. The heating flow channel structure of a coffee machine according to claim 8, characterized in that, The radial dimension of the limiting part is adapted to the radial dimension of the inner wall of the outer tube and forms a sealing fit.

10. The heating flow channel structure of a coffee machine according to claim 8, characterized in that, The inner tube is further fitted with a collar at the end away from the limiting part, and the collar forms a sealed connection with both the inner tube and the outer tube.

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