Anti-scald steam pipe

Abstract

An anti-scald steam pipe comprises a steam outer pipe, a steam inner pipe and a steam nozzle, the steam outer pipe is sleeved outside the steam inner pipe, the steam nozzle is mounted at one end of the steam outer pipe, and the anti-scald steam pipe is characterized in that the steam outer pipe and the steam inner pipe respectively comprise a bent pipe portion and a straight pipe portion, the bent pipe portion is arranged at the lower end of the straight pipe portion, and the straight pipe portion is arranged at the lower end of the straight pipe portion. A heat insulation layer is arranged between the steam outer pipe and the steam inner pipe, a safety valve is arranged on the side, close to the steam spray head, of the bent pipe part, the heat insulation layer is connected with the outside through the safety valve, and a limiting groove is formed in the end, away from the steam spray head, of the steam outer pipe. Through reasonable arrangement, the heat insulation effect of the steam pipe is enhanced, and the steam pipe is simple in structure, convenient to operate and capable of meeting use requirements.

Description

Technical Field

[0001] The utility model relates to the field of steam pipes, in particular to a heat-insulating steam pipe. Background Art

[0002] With the increasing demand for coffee, the use of coffee machines has also increased. Steam pipes are usually provided on coffee machines;

[0003] However, traditionally, most of the steam pipes of coffee machines are made of metal and have a single-tube structure, with strong thermal conductivity and poor heat insulation effect. When users or baristas use the steam pipe to make milk foam, it is easy to cause burns to the users, posing a certain danger. Therefore, improvement is needed. Summary of the Utility Model

[0004] Based on this, in view of the problem of poor heat insulation effect of the steam pipe with a traditional single-tube structure, it is necessary to provide a heat-insulating steam pipe.

[0005] A heat-insulating steam pipe includes a steam outer pipe, a steam inner pipe, and a steam nozzle. The steam outer pipe is sleeved outside the steam inner pipe. The steam nozzle is installed at one end of the steam outer pipe. Both the steam outer pipe and the steam inner pipe include a bent pipe portion and a straight pipe portion. The bent pipe portion is arranged at the lower end of the straight pipe portion. An insulating layer is provided between the steam outer pipe and the steam inner pipe. A safety valve is provided on one side of the bent portion of the bent pipe portion. The insulating layer is connected to the outside through the safety valve. A limiting groove is provided at one end of the steam outer pipe away from the steam nozzle.

[0006] A steam spray pipe is provided inside the steam nozzle, and a spray hole is provided at one end of the steam spray pipe away from the steam inner pipe.

[0007] In one embodiment, the insulating layer is an air insulating layer.

[0008] In one embodiment, the insulating layer is an aerogel insulating layer.

[0009] In one embodiment, an internal thread is provided at one end of the steam inner pipe close to the steam nozzle.

[0010] In one embodiment, a steam nozzle is provided inside the steam nozzle. The steam nozzle is provided with an external thread that is matched and connected to the internal thread. The steam nozzle is detachably installed on the end of the steam inner pipe with the internal thread through the steam nozzle.

[0011] In one embodiment, spray openings that are matched with the spray holes are provided at the bottoms of both the steam nozzle and the steam spray pipe.

[0012] In one embodiment, a silica gel sealing ring is provided between the steam nozzle and the steam inner pipe.

[0013] In one embodiment, the outer steam pipe is made of stainless steel, and the inner steam pipe is made of high-temperature resistant metal material.

[0014] The above anti-scald steam pipe enhances the heat insulation effect by arranging a heat insulation layer between the outer steam pipe and the inner steam pipe, thereby preventing the user of the coffee machine from being scalded by the steam pipe when making milk foam. At the same time, a safety valve is provided, and when the internal steam pressure is too high, the steam can be released through the safety valve to protect the user; and the steam pipe has a simple structure and is convenient to operate, and can meet the production requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is an exploded view of the present invention;

[0016] Figure 2 is a schematic diagram of the overall structure of the present invention;

[0017] Figure 3 is a cross-sectional view of the first embodiment of the present invention;

[0018] Figure 4 is a cross-sectional view of the second embodiment of the present invention;

[0019] Figure 5 is a schematic diagram of the structure of the steam nozzle and the steam spray head of the present invention;

[0020] Figure 6 is a partial cross-sectional view of the present invention;

[0021] Figure 7 is another partial cross-sectional view of the present invention.

[0022] 1 outer steam pipe, 11 straight pipe part, 12 bent pipe part, 13 limiting groove, 14 safety valve, 2 inner steam pipe, 21 internal thread, 3 steam spray head, 31 steam nozzle, 311 steam spray pipe, 312 spray hole, 32 external thread, 4 heat insulation layer, 41 air heat insulation layer, 42 aerogel heat insulation layer, 5 silicone rubber sealing ring, 6 spray port. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following detailed description of the specific embodiments of the present invention will be given with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0024] It should be noted that when an element is referred to as "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. On the contrary, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this utility model belongs. The terms used in the specification of this utility model herein are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0026] As Figures 1 - 7 shown, an anti-scald steam pipe includes a steam outer pipe 1, a steam inner pipe 2 and a steam nozzle 3. The steam outer pipe 1 is sleeved outside the steam inner pipe 2. The steam nozzle 3 is installed at one end of the steam outer pipe 1. Both the steam outer pipe 1 and the steam inner pipe 2 include a bent pipe portion 12 and a straight pipe portion 11. The bent pipe portion 12 is arranged at the lower end of the straight pipe portion 11. An insulating layer 4 is provided between the steam outer pipe 1 and the steam inner pipe 2. A safety valve 14 is provided on one side of the bent portion of the bent pipe portion 12. The insulating layer 4 is connected to the outside through the safety valve 14. A limiting groove 13 is provided at one end of the steam outer pipe 1 away from the steam nozzle 3. The safety valve 14 is a through hole.

[0027] An internal thread 21 is provided at one end of the steam inner pipe 2 close to the steam nozzle 3. By providing the internal thread 21, it is more conducive to the fixation between various structures and makes the structure more stable. Since the user needs to keep the steam pipe perpendicular to the wall of the coffee cup when making milk foam, the bent pipe portion 12 and the straight pipe portion 11 are provided to ensure that the steam pipe can be perpendicular to the wall of the coffee cup when the steam pipe is installed. By providing a double-pipe structure and the insulating layer 4, the heat insulation effect of the steam pipe can be more effectively enhanced, preventing the user from being scalded when making milk foam. In addition, since steam pressure will be generated in the steam pipe, to prevent the internal pressure from being too large and damaging the equipment, the safety valve 14 is provided to release the steam, thereby protecting the user and the equipment.

[0028] Further, the heat insulation layer 4 is an air heat insulation layer 41. The heat insulation layer 4 can be set as the air heat insulation layer 41. Air itself has a low thermal conductivity, which can effectively slow down heat transfer and achieve the heat insulation effect. The thickness of the heat insulation layer 4 can also be adjusted according to needs to meet different heat insulation requirements. Generally, it does not require special maintenance. Once damaged or with reduced effectiveness, repair or replacement is relatively easy, and it is relatively simple to implement.

[0029] Further, the heat insulation layer 4 is an aerogel heat insulation layer 42. Using aerogel as the heat insulation layer 4, compared with the air layer, due to the nano-porous structure of aerogel, the heat insulation effect is better than that of the air layer, and the density of aerogel is very low, so it can provide good heat insulation even with a small thickness, which helps to reduce the weight of the overall structure.

[0030] Further, a steam nozzle 31 is provided inside the steam spray head 3. The steam spray head 3 is provided with an external thread 32 that is matched and connected with the internal thread 21. The steam nozzle 31 is detachably installed at one end of the steam inner pipe 2 with the internal thread 21 through the steam spray head 3. By arranging the steam spray head 3 to wrap the steam nozzle 31, it is prevented that the steam nozzle 31 is damaged due to collision during use. In addition, the structure of the internal thread 21 and the external thread 32 facilitates the disassembly and cleaning of the steam spray head 3.

[0031] Still further, a steam spray pipe 311 is provided inside the steam nozzle 31, and a spray hole 312 is provided at one end of the steam spray pipe 311 away from the steam inner pipe 2.

[0032] Further, spray ports 6 that are matched with the spray holes 312 are provided at the bottoms of both the steam spray head 3 and the steam nozzle 31.

[0033] Further, a silica gel sealing ring 5 is provided between the steam nozzle 31 and the steam inner pipe 2. By arranging the silica gel sealing ring 5, an effective seal is formed between the steam inner pipe 2 and the steam nozzle 31, forming a sealing fit.

[0034] Further, the steam outer pipe 1 is made of stainless steel, and the steam inner pipe 2 is made of high-temperature resistant metal.

[0035] It should be noted that after the steam pipe is fixedly connected to the coffee machine by using the limiting groove 13, the operation of making milk foam can be carried out. The generated steam flows in the steam inner pipe 2 and sprays out from the spray port 6.

[0036] Embodiment 1

[0037] When the heat insulation layer 4 is an air heat insulation layer 41: Steam is generated by heating water in the boiler inside the coffee machine, and the water temperature in the boiler is maintained within a certain range to ensure the quality and pressure of the steam; The generated steam is transmitted through the steam inner tube 2 of the coffee machine. The steam inner tube 2 is made of high-temperature resistant and heat-conducting material and is provided with a silicone rubber sealing ring 5 to ensure that the steam does not leak; An air heat insulation layer 41 is provided, which helps to protect users from being scalded by high-temperature steam, and at the same time reduces heat loss, ensuring that the steam maintains its high temperature and dryness before reaching the milk; The steam nozzle 3 of the steam tube is immersed in the milk. By controlling the input amount of steam and the depth of the steam nozzle 3, the milk can be heated and foamed. This step requires precise control to ensure the texture and temperature of the milk foam. Since the dryness of the steam is crucial for the quality of the milk foam, dry steam can better mix air into the milk to form delicate milk foam, while wet steam may cause the milk foam to be too wet and rough, affecting the taste of the coffee.

[0038] In addition, after use, to remove the attached milk residues, and by opening the steam nozzle 3 several times to drain the liquid that may remain inside, to keep the steam tube clean and unobstructed.

[0039] Embodiment 2

[0040] When the heat insulation layer 4 is an aerogel heat insulation layer 42: Different from the air heat insulation layer 41, due to its extremely low thermal conductivity, aerogel can effectively isolate the heat transfer in the steam tube to the external environment, reduce heat loss, and maintain the high-temperature state of the steam; The aerogel heat insulation layer 42 also provides additional safety advantages, because it reduces the possibility of the operator contacting the high-temperature steam tube and reduces the risk of scalding, thus enhancing the heat insulation ability; And since during the process of heating and foaming the milk, the operator needs to control the input amount of steam to ensure the texture and temperature of the milk foam, and the aerogel reduces the influence of the external environment on the steam temperature, so the aerogel heat insulation layer 42 helps to more precisely control the temperature of the steam.

[0041] The above anti-scald steam tube enhances the heat insulation effect by setting a heat insulation layer 4 between the steam outer tube and the steam inner tube, preventing the coffee machine user from being scalded by the steam tube when making milk foam. At the same time, a safety valve 14 is set. When the internal steam pressure is too high, the steam can be released through the safety valve 14 to protect the user; And the structure of this steam tube is simple and the operation is convenient, which can meet the production requirements.

[0042] The technical features of the above embodiments can be combined arbitrarily. For the sake of brief description, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combinations of these technical features do not conflict, they should all be considered as the scope recorded in this specification.

[0043] The above-described embodiments merely represent several implementation manners of the present utility model. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all fall within the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent shall be subject to the appended claims.

Claims

1. A scald-proof steam pipe, comprising an outer steam pipe, an inner steam pipe and a steam nozzle, wherein the outer steam pipe is sleeved outside the inner steam pipe, and the steam nozzle is installed at one end of the outer steam pipe, characterized in that: The outer steam pipe and the inner steam pipe both include a curved pipe portion and a straight pipe portion, the curved pipe portion is arranged at the lower end of the straight pipe portion, and a heat insulation layer is arranged between the outer steam pipe and the inner steam pipe, a safety valve is arranged on one side of the curved portion of the curved pipe portion, and the heat insulation layer is connected to the outside world through the safety valve, a limiting groove is arranged at one end of the outer steam pipe away from the steam nozzle, and an internal thread is arranged at one end of the inner steam pipe close to the steam nozzle.

2. The anti-scalding steam pipe according to claim 1, characterized in that: The heat insulating layer is an air heat insulating layer.

3. The anti-scalding steam pipe according to claim 1, characterized in that: The thermal insulation layer is an aerogel thermal insulation layer.

4. The anti-scalding steam pipe according to any one of claims 1 to 3, characterized in that: The steam nozzle is provided inside the steam spray head, and the steam spray head is provided with an external thread matched with the internal thread. The steam nozzle is detachably mounted on the end of the steam inner tube with the internal thread through the steam spray head.

5. The anti-scalding steam pipe according to claim 4, characterized in that: A steam spray pipe is arranged in the steam nozzle, and a spray hole is arranged at one end of the steam spray pipe away from the steam inner pipe.

6. The anti-scalding steam pipe according to claim 5, characterized in that: The bottoms of the steam spray head and the steam nozzle are both provided with spray ports matching the spray holes.

7. The anti-scalding steam pipe according to claim 6, characterized in that: A silicone sealing ring is provided between the steam nozzle and the steam inner tube.

8. The anti-scalding steam pipe according to any one of claims 1 to 3, characterized in that: The outer steam pipe is made of stainless steel, and the inner steam pipe is made of high temperature resistant metal.

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