Steam heating nozzle device with jet flow structure

Abstract

The utility model relates to the technical field of steam rods of coffee machines or steam engines, in particular to a steam heating nozzle device with a jet flow structure. The nozzle comprises a faucet rod, a nozzle body and at least one jet flow structure, the top of the nozzle body is connected with the faucet rod through a connecting port, and a steam inner cavity is formed in the nozzle body; the jet flow structure comprises a jet flow channel located below the steam inner cavity and a liquid suction hole located in the side portion of the nozzle body, and the liquid suction hole is connected with the steam inner cavity through the jet flow channel. Steam entering the jet flow channel through the steam inner cavity through the faucet rod is premixed with liquid entering the jet flow channel through the liquid suction hole. The nozzle body is improved, and one or more groups of uniformly distributed jet structures are arranged, so that the premixing of sucked liquid and steam is realized, the temperature of the sucked liquid is increased, the temperature gradient of the liquid and the steam is reduced, the noise caused by bubble breakage generated by rapid condensation of the steam is obviously reduced, and the heating speed of the liquid is increased.

Description

Technical Field

[0001] This utility model relates to the technical field of steam rod nozzle devices for coffee machines or steam engines, and specifically to a steam heating nozzle device with a jet structure. Background Technology

[0002] In the field of beverage preparation equipment, particularly in the improvement of steam nozzles for coffee machines or steam generators, engineers are constantly exploring innovations. For example, Chinese patent CN208494606U effectively improves the heating efficiency of steam nozzles by introducing a buffer chamber and a vent. Nevertheless, while the currently widely used multi-hole jet structure performs excellently in increasing the contact area between steam and liquid and improving heat exchange efficiency, the noise problem associated with the bursting of steam bubbles remains prominent, which has a certain impact on the user experience. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a steam heating nozzle device with a jet structure to improve the efficiency of heating beverages and significantly reduce the noise generated during the heating of beverages.

[0004] The technical solution adopted in this utility model is as follows:

[0005] A steam heating nozzle device with a jet structure includes a faucet rod, a nozzle body, and at least one set of jet structures. The top of the nozzle body is connected to the faucet rod via a connection port, and the nozzle body has a steam inner cavity. The jet structure includes a jet channel located below the steam inner cavity and a liquid suction hole located on the side of the nozzle body. The liquid suction hole is connected to the steam inner cavity via the jet channel. Steam entering the jet channel through the steam inner cavity via the faucet rod is premixed with liquid entering the jet channel through the liquid suction hole.

[0006] This technical solution improves the nozzle body structure by adding at least one set of jet structures to achieve premixing of the intake liquid and steam. Multiple evenly distributed jet structures replace a single large-aperture suction structure, reducing the diameter of bubbles injected into the liquid and lowering the noise generated by bubble bursting. Specifically, when steam passes through the jet channel at a certain speed and pressure, it forms a jet. The jet has a suction effect, attracting and accelerating the surrounding liquid through the liquid intake hole into the root of the jet channel's exit hole, thus mixing the intake liquid with the steam. During the mixing process, the steam's heat energy is continuously transferred to the liquid, gradually raising the liquid's temperature while simultaneously reducing the intensity of steam condensation, thereby reducing the noise generated by bubble bursting and turbulence. The nozzle can be equipped with one or more sets of jet structures. If multiple sets of jet structures are used, under the same steam volume, compared to a single large-aperture suction structure, the diameter of bubbles injected into the liquid can be reduced, further lowering the noise generated by bubble bursting.

[0007] In addition, the steam heating nozzle device with a jet structure proposed above according to this utility model also has the following additional technical features:

[0008] According to one embodiment of the present invention, the jet channel includes an inlet hole communicating with the steam cavity and an outlet hole located at the bottom of the nozzle body; the jet channel is provided with at least one outlet hole immersed in the liquid for heating or foaming the liquid.

[0009] In this technical solution, the jet channel is responsible for guiding steam from the inlet hole to the bottom of the nozzle body. When the steam is ejected through the outlet hole and comes into contact with the liquid, heat exchange occurs, causing the liquid temperature to rise.

[0010] According to one embodiment of the present invention, the aperture of the inlet hole is smaller than that of the outlet hole. The high-speed flowing steam forms a negative pressure near the liquid suction hole outlet located at the root of the outlet hole, and the liquid entering through the liquid suction hole premixes with the steam in the jet channel.

[0011] In this technical solution, according to Bernoulli's principle, when steam enters the jet channel through the inlet hole, it will be subject to a certain throttling effect, which will increase the steam velocity and reduce the pressure. When the high-speed steam flow meets the liquid, the momentum of the steam will be transferred to the liquid, which will accelerate the liquid and disperse it into smaller droplets. The dispersion effect increases the contact area between the liquid and the steam, promoting heat transfer and mass premixing.

[0012] According to one embodiment of the present invention, the aperture ratio of the inlet hole to the outlet hole is in the range of 1:1.5 to 1:5.

[0013] This technical solution adjusts the range of orifice diameter ratio to ensure sufficient negative pressure is generated during high-speed steam flow, drawing in liquid and achieving premixing of liquid and steam within the outlet orifice.

[0014] According to one embodiment of the present invention, the diameter of the inlet hole ranges from 0.2 mm to 2 mm, the diameter of the outlet hole ranges from 0.3 mm to 10 mm, and the diameter of the liquid suction hole ranges from 0.3 mm to 5 mm.

[0015] In this technical solution, a certain negative pressure is formed between the jet channels by steam. By adjusting the orifice size, the negative pressure is controlled, thereby affecting the steam flow rate and mixing effect. Appropriate negative pressure ensures that the steam can flow smoothly and mix thoroughly with the liquid. Specifically, the inlet orifice diameter of 0.2mm to 2mm is used to generate a higher steam flow rate and lower pressure, the outlet orifice diameter of 0.3mm to 10mm allows for the generation of appropriate negative pressure, and the liquid suction orifice diameter range of 0.3mm to 5mm matches the inlet orifice to ensure that sufficient liquid can be drawn in and mixed with the steam. The liquid suction orifice can be perpendicular to the jet channel or connected to the jet channel at a certain angle.

[0016] According to one embodiment of the present invention, the emission holes are arranged in a geometric shape, including annular and matrix shapes.

[0017] In this technical solution, a specific geometric arrangement induces the formation of vortices or turbulence in the steam after ejection. These vortices and turbulence increase the contact area and mixing efficiency between the steam and its surroundings, accelerating heat transfer and mass diffusion. For example, when the ejector holes are arranged in a ring, the steam ejected from the nozzle forms a ring-shaped steam curtain, allowing for more uniform steam diffusion in three-dimensional space. This is particularly beneficial in applications requiring large-area heating or processing, as the ring-shaped steam curtain can cover a wider area, reducing localized steam accumulation and waste. Conversely, a matrix arrangement of ejector holes can create multiple steam injection points on a two-dimensional plane, suitable for applications requiring precise control of the steam diffusion direction and range.

[0018] According to one embodiment of the present invention, an upper sealing ring is provided on the inner edge of the connection port, and the nozzle body is sealed by the upper sealing ring cooperating with the faucet rod.

[0019] In this technical solution, the upper sealing ring is used to prevent steam from leaking from the gap between the nozzle body and the faucet rod, ensuring good sealing performance during long-term high pressure or high temperature conditions.

[0020] According to one embodiment of the present invention, a temperature probe is provided on the side of the nozzle body, and the temperature sensing head of the temperature probe is in contact with the liquid below the nozzle body.

[0021] In this technical solution, the temperature probe is installed externally on the nozzle body, which has the advantage of making the nozzle body more compact and small.

[0022] According to one embodiment of the present invention, the nozzle body is further provided with an installation cavity, and a temperature probe is provided in the installation cavity. The temperature sensing head of the temperature probe extends out of the nozzle body and contacts the liquid below.

[0023] In this technical solution, the temperature probe is installed by being built into the nozzle body, which has the advantage of making the overall nozzle device more compact and small.

[0024] According to one embodiment of the present invention, a lower sealing ring is provided on the inner edge of the mounting cavity, and the nozzle body is sealed by the cooperation of the lower sealing ring and the temperature probe.

[0025] In this technical solution, the lower sealing ring is used to prevent steam from leaking from the gap between the nozzle body and the temperature probe, ensuring good sealing performance during long-term high-pressure or high-temperature conditions.

[0026] Compared with the prior art, this utility model has the following advantages:

[0027] By improving the nozzle body structure and setting one or more sets of evenly distributed jet structures, the premixing of the intake liquid and steam can be achieved, the temperature of the intake liquid can be increased, the temperature gradient between the liquid and steam can be reduced, thereby significantly reducing the noise caused by the bursting of bubbles due to rapid steam condensation and increasing the liquid heating rate. Attached Figure Description

[0028] Figure 1 This is a perspective view of Example 1.

[0029] Figure 2 This is a cross-sectional view of Example 1.

[0030] Figure 3 This is a cross-sectional view of the nozzle body in Example 1.

[0031] Figure 4 This is a perspective view of Example 2.

[0032] Figure 5 This is a cross-sectional view of Example 2.

[0033] Figure 6 This is a cross-sectional view of the nozzle body in Example 2.

[0034] In the diagram: 1. Faucet handle; 2. Nozzle body; 201. Connection port; 202. Steam chamber; 203. Mounting chamber; 204. Inlet port; 205. Liquid suction port; 206. Outlet port; 3. Temperature probe; 4. Upper sealing ring; 5. Lower sealing ring. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0036] like Figures 1 to 6 As shown, this embodiment provides a steam heating nozzle device with a jet structure, including a faucet rod 1, a nozzle body 2, and at least one set of jet structures. The top of the nozzle body 2 is connected to the faucet rod 1 through a connection port 201, and a steam inner cavity 202 is provided inside the nozzle body 2. The jet structure includes a jet channel located below the steam inner cavity 202 and a liquid suction hole 205 located on the side of the nozzle body 2. The liquid suction hole 205 is connected to the steam inner cavity 202 through the jet channel. The steam entering the jet channel through the steam inner cavity 202 via the faucet rod 1 is premixed with the liquid entering the jet channel through the liquid suction hole 205.

[0037] like Figures 1 to 6 As shown, this technical solution improves the structure of the nozzle body 2 by adding at least one set of jet structures to achieve premixing of the sucked liquid and steam. Multiple evenly distributed jet structures are used instead of a single large-aperture suction structure, reducing the diameter of bubbles injected into the liquid and lowering the noise generated by bubble bursting. Specifically, when steam passes through the jet channel at a certain speed and pressure, it forms a jet. The jet has a suction effect, attracting and accelerating the surrounding liquid through the liquid suction hole 205 into the root of the jet channel's outlet hole 206, thus mixing the sucked liquid with the steam. During the mixing process, the steam's heat energy is continuously transferred to the liquid, causing the liquid to gradually heat up, while simultaneously reducing the intensity of steam condensation and lowering the noise generated by bubble bursting and turbulence. The nozzle can be equipped with one or more sets of jet structures. If multiple sets of jet structures are used, under the same steam volume, compared to a single large-aperture suction structure, the diameter of bubbles injected into the liquid can be reduced, further lowering the noise generated by bubble bursting.

[0038] In addition, the steam heating nozzle device with a jet structure proposed above according to this utility model also has the following additional technical features:

[0039] According to one embodiment of the present invention, the jet channel includes an inlet hole 204 communicating with the steam inner cavity 202 and an outlet hole 206 located at the bottom of the nozzle body 2; the jet channel is provided with at least one outlet hole 206 immersed in the liquid for heating or foaming the liquid.

[0040] In this technical solution, the jet channel is responsible for guiding steam from the inlet hole 204 to the bottom of the nozzle body 2. When the steam is ejected through the outlet hole and comes into contact with the liquid, heat exchange will occur, causing the liquid temperature to rise.

[0041] According to one embodiment of the present invention, the aperture of the inlet hole 204 is smaller than the aperture of the outlet hole 206. The high-speed flowing steam forms a negative pressure near the outlet of the liquid suction hole 205 located at the root of the outlet hole 206, and the liquid entering through the liquid suction hole 205 premixes with the steam in the jet channel.

[0042] In this technical solution, according to Bernoulli's principle, when steam enters the jet channel through the inlet hole, it will be subject to a certain throttling effect, which will increase the steam velocity and reduce the pressure. When the high-speed steam flow meets the liquid, the momentum of the steam will be transferred to the liquid, which will accelerate the liquid and disperse it into smaller droplets. The dispersion effect increases the contact area between the liquid and the steam, promoting heat transfer and mass premixing.

[0043] According to one embodiment of the present invention, the aperture ratio of the inlet hole 204 to the outlet hole 206 is in the range of 1:1.5 to 1:5.

[0044] This technical solution adjusts the range of orifice diameter ratio to ensure sufficient negative pressure is generated during high-speed steam flow, drawing in liquid and achieving premixing of liquid and steam within the outlet orifice 206.

[0045] According to one embodiment of the present invention, the aperture of the inlet 204 is in the range of 0.2 mm to 2 mm, the aperture of the outlet 206 is in the range of 0.3 mm to 10 mm, and the aperture of the liquid suction hole 205 is in the range of 0.3 mm to 5 mm.

[0046] In this technical solution, a certain negative pressure is formed between the jet channels by steam. By adjusting the orifice size, the negative pressure is controlled, thereby affecting the steam flow rate and mixing effect. Appropriate negative pressure ensures that the steam can flow smoothly and mix thoroughly with the liquid. Specifically, the inlet orifice diameter of 0.2mm to 2mm is used to generate a higher steam flow rate and lower pressure, the outlet orifice diameter of 0.3mm to 10mm allows for appropriate negative pressure, and the orifice diameter range of the liquid suction orifice 205 (0.3mm to 5mm) matches that of the inlet orifice 204 to ensure sufficient liquid can be drawn in and mixed with the steam. The liquid suction orifice 205 can be perpendicular to the jet channel or connected to the jet channel at a certain angle.

[0047] According to one embodiment of the present invention, the emission holes 206 are arranged in a geometric shape, including annular and matrix shapes.

[0048] In this technical solution, a specific geometric arrangement induces the steam to form vortices or turbulence after ejection. Vortices and turbulence increase the contact area and mixing efficiency between the steam and its surroundings, accelerating heat transfer and mass diffusion. For example, when the ejector holes 206 are arranged in a ring, the steam ejected from the nozzle forms a ring-shaped steam curtain, allowing for more uniform steam diffusion in three-dimensional space. This is particularly beneficial in applications requiring large-area heating or processing, as the ring-shaped steam curtain can cover a wider area, reducing localized steam accumulation and waste. Conversely, a matrix arrangement of the ejector holes 206 can create multiple steam injection points on a two-dimensional plane, suitable for applications requiring precise control of the steam diffusion direction and range.

[0049] According to one embodiment of the present invention, an upper sealing ring 4 is provided on the inner edge of the connection port 201, and the nozzle body 2 is sealed by the upper sealing ring 4 cooperating with the faucet rod 1.

[0050] In this technical solution, the upper sealing ring 4 is used to prevent steam from leaking from the gap between the nozzle body 2 and the faucet rod 1, ensuring good sealing performance during long-term high pressure or high temperature conditions.

[0051] Example 1

[0052] like Figures 1 to 3 As shown in the figure, this embodiment illustrates the installation method of the nozzle body 2 and the built-in temperature probe 3.

[0053] According to one embodiment of the present invention, the nozzle body 2 is further provided with an installation cavity 203, and a temperature probe 3 is provided in the installation cavity 203. The temperature sensing head of the temperature probe 3 extends out of the nozzle body 2 and contacts the liquid below.

[0054] In this technical solution, the temperature probe 3 is installed by being built into the nozzle body 2, which has the advantage of making the overall nozzle device more compact and small.

[0055] According to one embodiment of the present invention, a lower sealing ring 5 is provided on the inner edge of the mounting cavity 203, and the nozzle body 2 is sealed by the cooperation of the lower sealing ring 5 and the temperature probe 3.

[0056] In this technical solution, the lower sealing ring 5 is used to prevent steam from leaking from the gap between the nozzle body 2 and the temperature probe 3, ensuring good sealing performance during long-term high pressure or high temperature conditions.

[0057] Example 2

[0058] like Figures 4 to 6 As shown in the figure, this embodiment illustrates the installation method of the nozzle body 2 and the external temperature probe 3.

[0059] A temperature probe 3 is provided on the side of the nozzle body 2, and the temperature sensing head of the temperature probe 3 is in contact with the liquid below the nozzle body 2.

[0060] In this technical solution, the temperature probe 3 is installed externally on the nozzle body 2, which has the advantage of making the nozzle body 2 more compact and smaller.

[0061] The usage process of the above embodiments is as follows:

[0062] like Figures 1 to 6 As shown, steam enters the steam cavity 202 of the nozzle body 2 through the faucet rod 1, and then enters the jet channel through the inlet hole 204. In the jet channel, the steam velocity increases, forming a negative pressure, which attracts the surrounding liquid to enter the jet channel through the liquid suction hole 205 and premix with the steam. By adjusting the aperture ratio of the inlet hole 204 and the outlet hole 206, sufficient negative pressure is generated in the high-speed flow of steam to promote liquid suction and mixing. After the steam and liquid are mixed in the jet channel, they are ejected through the outlet hole 206. The outlet holes are arranged in a ring or matrix to induce the steam to form vortices or turbulence, increase the contact area and mixing efficiency between the steam and the liquid, and accelerate heat transfer to achieve uniform heating or foaming of the liquid.

[0063] Meanwhile, the nozzle body 2 and the faucet rod 1 are sealed by the upper sealing ring 4 to prevent steam leakage; the temperature probe 3 is used to monitor the temperature of the liquid below the nozzle in real time to ensure that the liquid is kept within the required temperature range; the temperature probe 3 can be external or internal to the nozzle body 2, depending on the installation requirements and space constraints.

[0064] In summary, the steam heating nozzle device with a jet structure achieves efficient mixing and heating of steam and liquid through the jet structure, while ensuring the device's sealing and temperature monitoring functions.

[0065] Although the present invention has been described in detail with reference to the accompanying drawings and preferred embodiments, it is not limited thereto. Various equivalent modifications or substitutions can be made to the embodiments of the present invention by those skilled in the art without departing from the spirit and essence of the present invention, and such modifications or substitutions should all be within the scope of the present invention. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should also be included within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the scope of the claims.

Claims

1. A steam heating nozzle device with a jet structure, characterized in that, The device includes a faucet rod (1), a nozzle body (2), and at least one jet structure. The top of the nozzle body (2) is connected to the faucet rod (1) through a connection port (201). The nozzle body (2) has a steam cavity (202) inside. The jet structure includes a jet channel located below the steam cavity (202) and a liquid suction hole (205) located on the side of the nozzle body (2). The liquid suction hole (205) is connected to the steam cavity (202) through the jet channel. The steam entering the jet channel through the steam cavity (202) via the faucet rod (1) is premixed with the liquid entering the jet channel through the liquid suction hole (205).

2. The steam heating nozzle device with a jet structure as described in claim 1, characterized in that, The jet channel includes an inlet hole (204) communicating with the steam cavity (202) and an outlet hole (206) located at the bottom of the nozzle body (2); at least one outlet hole (206) is provided, and the outlet hole (206) is immersed in the liquid for heating or foaming the liquid.

3. The steam heating nozzle device with a jet structure as described in claim 2, characterized in that, The aperture of the inlet (204) is smaller than that of the outlet (206). The high-speed flowing steam forms a negative pressure near the outlet of the liquid suction hole (205) located at the root of the outlet (206). The liquid entering through the liquid suction hole (205) and the steam are premixed in the jet channel.

4. The steam heating nozzle device with a jet structure as described in claim 2, characterized in that, The aperture ratio of the inlet hole (204) to the outlet hole (206) is in the range of 1:1.5 to 1:

5.

5. The steam heating nozzle device with a jet structure as described in claim 2, characterized in that, The aperture of the inlet (204) ranges from 0.2 mm to 2 mm, the aperture of the outlet (206) ranges from 0.3 mm to 10 mm, and the aperture of the liquid intake (205) ranges from 0.3 mm to 5 mm.

6. The steam heating nozzle device with a jet structure as described in claim 2, characterized in that, The exit holes (206) are arranged in a geometric shape, including ring shape and matrix shape.

7. The steam heating nozzle device with a jet structure as described in claim 1, characterized in that, The inner edge of the connection port (201) is provided with an upper sealing ring (4), and the nozzle body (2) is sealed by the upper sealing ring (4) cooperating with the faucet rod (1).

8. The steam heating nozzle device with a jet structure as described in claim 1, characterized in that, A temperature probe (3) is provided on the side of the nozzle body (2), and the temperature sensing head of the temperature probe (3) is in contact with the liquid below the nozzle body (2).

9. The steam heating nozzle device with a jet structure as described in claim 1, characterized in that, The nozzle body (2) is further provided with an installation cavity (203), and a temperature probe (3) is provided in the installation cavity (203). The temperature sensing head of the temperature probe (3) extends out of the nozzle body (2) and is in contact with the liquid below.

10. The steam heating nozzle device with a jet structure as described in claim 9, characterized in that, The inner edge of the mounting cavity (203) is provided with a lower sealing ring (5), and the nozzle body (2) is sealed by the cooperation of the lower sealing ring (5) and the temperature probe (3).

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