Fluid generating device

Abstract

The invention provides a fluid generating device which comprises a body, a first fluid channel extending in the axial direction of the body is arranged in the body, the first fluid channel is provided with a first fluid inlet and a first fluid outlet, and the size of the first fluid inlet is the same as that of the first fluid outlet; the mixing port is located between the first fluid inlet and the first fluid outlet, the extension direction of at least part of the second fluid channel intersects with the first fluid channel, and the second fluid channel is communicated with the first fluid channel from the mixing port; the fluid driving assembly is used for driving fluid in the second fluid passage; the heating assembly is used for heating the fluid flowing from the second fluid passage to the mixing port; therefore, the fluid in the body flows more smoothly, mixing and rectification of various fluids are facilitated, and disorder of the various fluids at the fluid outlet end can be avoided.

Description

Technical Field

[0001] The present invention relates to the field of hair dryers, and particularly to a fluid generating device. Background Art

[0002] As a common fluid generating device, hair dryers are widely used in daily life and industrial production. In particular, hair dryers that can generate hot fluids have a variety of applications, such as drying hair. They can even be used to style hair in wet or dry environments.

[0003] Based on the principle of fluid mechanics, some existing hair dryers drive the main fluid through a heating component by a motor and a fan to form hot air. Under the entrainment effect of the hot air, a certain amount of cold air is entrained from the outside. The hot air and the cold air are mixed at the fluid outlet of the hair dryer to form a hot fluid within a preset temperature range. On the one hand, since the hot air and the cold air before mixing are ejected parallel to the hair dryer, various fluid disorder phenomena are likely to occur at the fluid outlet end of the hair dryer, affecting the user experience; on the other hand, this type of hair dryer generally needs to be additionally equipped with a nozzle, or a longer air mixing section is additionally provided at the fluid outlet end of the hair dryer, resulting in a longer overall flow path of the hair dryer, requiring a motor with a larger power, and increasing the volume of the hair dryer body. Summary of the Invention

[0004] The purpose of the present invention is to provide a fluid generating device to solve at least one problem in the background art.

[0005] To achieve the above invention purpose, the present invention adopts the following technical solutions: A fluid generating device, comprising:

[0006] A body, in which a first fluid passage extending along the axial direction of the body is provided. The first fluid passage has a first fluid inlet and a first fluid outlet. The first fluid inlet and the first fluid outlet are coaxially arranged, and the size of the first fluid inlet is the same as that of the first fluid outlet;

[0007] A mixing port, located between the first fluid inlet and the first fluid outlet;

[0008] A second fluid passage, at least part of the second fluid passage extends in a direction intersecting with the first fluid passage, and the second fluid passage communicates with the first fluid passage from the mixing port;

[0009] A fluid driving component, used to drive the fluid in the second fluid passage to flow;

[0010] A heating component, used to heat the fluid flowing from the second fluid passage to the mixing port.

[0011] In the fluid generating device of the present invention, by providing a mixing port communicating with the second fluid passage between the first fluid inlet and the first fluid outlet of the first fluid passage, and setting the first fluid inlet and the first fluid outlet coaxially, and the size of the first fluid inlet is the same as the size of the first fluid outlet; the flow resistance and turbulent flow phenomenon are reduced, making the fluid flow in the body more smooth, and enabling the other fluid entering the first fluid passage from the mixing port to be on the flow path of the fluid in the first fluid passage, which is more conducive to the mixing and rectification between various fluids, making the outlet air temperature more uniform, and being able to avoid the disorder of various fluids at the fluid outlet end and affecting the user experience.

[0012] As a further improved technical solution of the present invention, the cross-sectional area of the first fluid passage remains constant along the fluid flow direction. Thus, the fluid on the first fluid passage will not be subject to additional resistance, making the fluid flow on the first fluid passage more smooth.

[0013] As a further improved technical solution of the present invention, the second fluid passage includes a second fluid outlet communicating with the body; the distance between the mixing port and the first fluid outlet is not less than the distance between the mixing port and the second fluid outlet. Setting the mixing port as close as possible to the second fluid outlet facilitates the fluid in the second fluid passage to flow into the mixed fluid passage through the mixing port, and can also relatively extend the mixed fluid passage, so that the cold fluid and the hot fluid have more sufficient contact and flow time in the mixed fluid passage, thereby improving the uniformity after mixing, reducing the temperature gradient, and avoiding local overcooling or overheating phenomena.

[0014] As a further improved technical solution of the present invention, the mixing port is arranged in the middle section or adjacent to the middle section of the first fluid passage. Facilitating the fluid in the second fluid passage to flow into the mixed fluid passage through the mixing port, and can also relatively extend the mixed fluid passage, so that the cold fluid and the hot fluid have more sufficient contact and flow time in the mixed fluid passage, thereby improving the uniformity after mixing, reducing the temperature gradient, and avoiding local overcooling or overheating phenomena.

[0015] As a further improved technical solution of the present invention, the fluid generating device further includes a fluid guiding structure, and the fluid guiding structure is arranged at a position close to the mixing port to guide the fluid in the second fluid passage to flow towards the direction of the first fluid outlet. Making the hot fluid entering the first fluid passage from the mixing port flow into the mixed fluid passage uniformly, and avoiding part of the fluid flowing back into the first cold fluid passage and affecting the stability of the use of the fluid generating device.

[0016] As a further improved technical solution of the present invention, the body has a hollow cavity disposed around the first fluid passage, and the second fluid passage includes a second fluid outlet; the fluid guiding structure includes a guiding passage located in the hollow cavity and obliquely extending from the second fluid outlet toward the direction where the first fluid outlet is located.

[0017] As a further improved technical solution of the present invention, the guiding passage is disposed around the first fluid passage.

[0018] As a further improved technical solution of the present invention, the body has a hollow cavity disposed around the first fluid passage, and the second fluid passage includes a second fluid outlet communicating with the hollow cavity;

[0019] At least part of the heating assembly is located in the hollow cavity, and at least part of the heating assembly located in the hollow cavity obliquely extends toward the direction where the first fluid outlet is located, and at least part of the heating assembly obliquely extending toward the direction where the first fluid outlet is located forms the fluid guiding structure.

[0020] As a further improved technical solution of the present invention, the mixing port is annular, and along the flow direction of the fluid in the first fluid passage, the mixing port has a first end located upstream and a second end located downstream;

[0021] The fluid guiding structure includes a guiding inclined surface extending obliquely from the first end toward the inside of the first fluid passage and toward the first fluid outlet; and / or, the fluid guiding structure includes a guiding inclined surface extending obliquely from the second end toward the outside of the first fluid passage and away from the first fluid outlet.

[0022] As a further improved technical solution of the present invention, the fluid generating device is provided with a handle connected to the body, and at least part of the second fluid passage is formed in the handle.

[0023] As a further improved technical solution of the present invention, the body has a hollow cavity disposed around the first fluid passage, and the second fluid passage communicates with the hollow cavity;

[0024] At least part of the heating assembly is disposed on the side of the hollow cavity opposite to the second fluid passage; or, a plurality of the heating assemblies are spaced around the first fluid passage and disposed in the hollow cavity.

[0025] As a further improved technical solution of the present invention, the body has a hollow cavity disposed around the first fluid passage, and the second fluid passage includes a second fluid outlet communicating with the hollow cavity;

[0026] At least a part of the heating component is located at a position of the hollow cavity close to the second fluid outlet.

[0027] As a further improved technical solution of the present invention, for a cross-section perpendicular to the flow direction of the fluid flowing through the heating component, the heating component located in the hollow cavity has at least two heating segments with different cross-sectional areas. That is, the heating component located at the second fluid outlet and in the hollow cavity has different heating areas along the flow direction of the fluid, so that the shape of the heating component can be adjusted according to specific requirements to achieve different heating effects.

[0028] As a further improved technical solution of the present invention, the downstream cross-sectional area of the heating component located in the hollow cavity is larger than the upstream cross-sectional area. Thus, along the flow direction of the fluid flowing through the heating component, the heating area of the heating component gradually increases, so that the temperature of the fluid in the hollow cavity can be further made uniform, playing a role in uniform heating.

[0029] As a further improved technical solution of the present invention, the fluid generating device further includes a handle connected to the body, and a second fluid passage is formed in the handle; the heating component is only located in the handle / second fluid passage.

[0030] As a further improved technical solution of the present invention, the body has a hollow cavity surrounding the first fluid passage, and two connecting walls are arranged at intervals along the axis in the hollow cavity, and the two connecting walls form a communication passage connecting the mixing port to the second fluid passage;

[0031] The first fluid passage is segmented at the mixing port, and each segment of the first fluid passage is at least supported in the hollow cavity by the connecting wall. The stability of the body is improved, and at the same time, the structure inside the body is simplified.

[0032] As a further improved technical solution of the present invention, the body has a third fluid outlet on the same side as the first fluid outlet, and the third fluid outlet surrounds the first fluid outlet; part of the fluid in the second fluid passage flows into the first fluid passage from the mixing port, and the other part flows out from the third fluid outlet. The air outlet area at the fluid outlet end of the body can be increased, and thus the air output can be increased.

[0033] As a further improved technical solution of the present invention, the heating component is only located on the fluid path of the fluid flowing into the first fluid passage from the mixing port.

[0034] As a further improved technical solution of the present invention, the body has a hollow cavity disposed around the first fluid passage, and the third fluid outlet is communicated with the hollow cavity;

[0035] A partition plate is disposed in the hollow cavity, and the partition plate divides the hollow cavity into a hot fluid passage communicating the second fluid passage with the mixing port and a cold fluid passage communicating the second fluid passage with the third fluid outlet. Thus, in the fluid in the second fluid passage, only the fluid flowing from the mixing port into the first fluid passage is a hot fluid, and the other branched fluid is a cold fluid.

[0036] In the fluid generating device of the present invention, since the overall flow channel arrangement can prevent the outer wall of the body from directly contacting the heated fluid, especially the outer wall of the body adjacent to the fluid outlet end does not directly contact the heated fluid. On the one hand, it enables the user to hold the body without feeling overheated, and even without any anti-scalding design near the outer wall of the body, the possibility of scalding or overheating can be greatly reduced; on the other hand, it prevents the fluid outlet end from overheating. Even if other accessories are provided at the fluid outlet end, it will not cause other accessories to overheat, greatly reducing the possibility of scalding or overheating and improving safety performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 is a schematic structural view of the fluid generating device in the first embodiment of the present invention;

[0038] Figure 2 is Figure 1 a schematic structural view of the fluid generating device shown in another angle;

[0039] Figure 3 is Figure 2 a cross-sectional view taken along the A-A direction in;

[0040] Figure 4 is a cross-sectional view of the fluid generating device in a specific embodiment of the heating assembly of the present invention taken along the cross-section of the body;

[0041] Figure 5 is a schematic structural view of the fluid generating device in the second embodiment of the present invention;

[0042] Figure 6 is Figure 5 in the fluid generating device along Figure 2 the A-A direction shown in the cross-sectional view. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0043] The present invention will be described in detail below with reference to the embodiments shown in the drawings. Please refer to Figures 1 to 6As shown, it is a preferred embodiment of the present invention. However, it should be noted that these embodiments are not limitations on the present invention. Any equivalent transformation or substitution in terms of function, method, or structure made by those of ordinary skill in the art based on these embodiments shall fall within the protection scope of the present invention.

[0044] In this specification, it should be noted that unless otherwise clearly specified and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, connection can be direct connection or indirect connection through an intermediate medium, and it can be fixed connection, detachable connection, or integral connection. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, the terms first, second, third, etc. in this specification are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second", "third", etc. may explicitly or implicitly include one or more of such features. In the description of this specification, the meaning of "a plurality" is two or more unless otherwise clearly and specifically defined.

[0045] Please refer Figures 1 to 3 As shown, it is the fluid generating device 100 in the first embodiment of the present invention. Below, taking the fluid generating device 100 as a hair dryer for drying hair as an example, the structures, functions, and mechanisms of the fluid generating device 100 will be specifically described. It can be understood that this is not limited thereto, and the fluid generating device 100 can also be applied to other scenarios that require generating cold / hot / high-speed fluid, such as glue removal, dust removal, etc.

[0046] The fluid generating device 100 includes a body 1, and the body 1 is generally a straight cylinder with equal diameters at the front and rear, such as a cylindrical shape or an elliptical cylindrical shape. Of course, this is not limited thereto. According to the specific requirements of the design, the main body can also be designed as an irregular cylindrical shape with unequal diameters at the front and rear, and this will not be elaborated here.

[0047] One end of the body 1 in the axial direction defines the fluid outlet end 1a of the fluid generating device 100. The fluid generated within the fluid generating device 100 is ejected from the fluid outlet end 1a to achieve hair drying.

[0048] Inside the body 1, there is a first fluid passage 11 extending along the axial direction of the body 1, and the first fluid passage 11 penetrates the body 1 along the axial direction. The first fluid passage 11 has a first fluid inlet 111, a first fluid outlet 112, and a mixing port 113 located between the first fluid inlet 111 and the first fluid outlet 112. The fluid flowing into the first fluid passage 11 from the first fluid inlet 111 passes through the mixing port 113 and then is ejected from the first fluid outlet 112 to the fluid generating device 100. That is, in this embodiment, the first fluid outlet 112 is located at the fluid outlet end 1a of the fluid generating device 100.

[0049] That is, along the flow direction of the fluid in the first fluid passage 11, the first fluid passage 11 includes a first cold fluid passage 11a located upstream of the mixing port 113 and a mixed fluid passage 11b located downstream of the mixing port 113. The above-mentioned first fluid outlet 112 refers to the mixed fluid outlet of the mixed fluid passage 11b. The first cold fluid passage 11a is only used to transport cold fluid. After the cold fluid in the first cold fluid passage 11a enters the mixed fluid passage 11b, it mixes with other fluids flowing into the mixed fluid passage 11b through the mixing port 113 to form a mixed fluid, and is ejected from the fluid outlet end 1a.

[0050] In some optional embodiments, the first cold fluid outlet 114 of the first cold fluid passage 11a and the mixed fluid inlet 115 of the mixed fluid passage 11b are axially spaced apart to form the mixing port 113. In the fluid generating device 100 of the present invention, the mixing port 113 is directly provided on the path of the first fluid passage 11, without additionally providing a nozzle or additionally providing a mixing air section near the fluid outlet end 1a, reducing unnecessary flow resistance, avoiding problems such as backflow and eddy current in the traditional nozzle-type mixing structure, and being able to simplify the structure of the fluid outlet end 1a of the fluid generating device 100, shorten the flow path of the fluid in the body 1, reduce the energy loss during the flow process, improve the kinetic energy output of the fluid, and enable the fluid to flow out more smoothly from the fluid outlet end 1a; at the same time, other fluids entering the first fluid passage 11 from the mixing port 113 are located on the flow path of the fluid in the first fluid passage 11, which is more conducive to the mixing and rectification between various fluids, making the outlet air temperature more uniform, and being able to avoid the disorder of various fluids at the fluid outlet end 1a and affecting the user experience.

[0051] Specifically, inside the body 1, there is an inner cylinder 12 that defines the first fluid passage 11. One end of the inner cylinder 12 is the first fluid inlet 111, and the other end is the first fluid outlet 112. The mixing port 113 penetrates the wall of the inner cylinder 12. The inner cylinder 12 located upstream of the mixing port 113 defines the first cold fluid passage 11a, and the inner cylinder 12 located downstream of the mixing port 113 defines the mixed fluid passage 11b.

[0052] In some alternative embodiments, the mixing port 113 penetrates the wall of the inner cylinder 12 along the radial direction of the inner cylinder 12. In the fluid generating device 100 of the present invention, the mixing port 113 is directly formed by penetrating the wall of the inner cylinder 12 along the radial direction, so that the mixing port 113 is directly arranged on the path of the first fluid passage 11, without additionally arranging a nozzle or additionally arranging a mixing air section near the fluid outlet end 1a, reducing unnecessary flow resistance, avoiding problems such as backflow and eddy current in the traditional nozzle-type mixing structure, and being able to simplify the structure of the fluid outlet end 1a of the fluid generating device 100, shorten the flow path in the body 1, shorten the fluid flow path, reduce the energy loss during the flow process, improve the kinetic energy output of the fluid, and enable the fluid to flow out from the fluid outlet end 1a more smoothly; at the same time, on the one hand, the flow direction of the other fluid entering the first fluid passage 11 from the mixing port 113 intersects / is not parallel to the flow direction of the fluid in the first fluid passage 11, and on the other hand, the other fluid entering the first fluid passage 11 from the mixing port 113 is located on the flow path of the fluid in the first fluid passage 11, which is more conducive to the mixing and rectification between various fluids, making the outlet air temperature more uniform, and being able to avoid the disorder of various fluids at the fluid outlet end 1a and affecting the user experience.

[0053] In some alternative embodiments, the inner cylinder 12 extends continuously or segmentally from the first fluid inlet 111 to the first fluid outlet 112. In this embodiment, the inner cylinder 12 is arranged in a segmented manner, that is, the mixing port 113 is annular, and the mixing port 113 divides the inner cylinder 12 into two sections spaced along the axial direction. That is, the first fluid passage 11 is segmented at the mixing port 113, which can increase the area of the mixing port 113, so that it is easier for other fluids to enter the fluid passage 11b from the mixing port 113. Of course, this is not limited thereto. In other embodiments, the mixing port 113 can also be a plurality of through holes spaced circumferentially around the inner cylinder 12. At this time, the inner cylinder 12 extends continuously from the first fluid inlet 111 to the first fluid outlet 112.

[0054] In this embodiment, the cross-sectional shape of the inner cylinder 12 is circular. Of course, it is known that the cross-sectional shape of the inner cylinder 12 can also be other regular or irregular non-circular shapes.

[0055] In a specific embodiment, the first fluid inlet 111 and the first fluid outlet 112 are coaxially arranged, and the size of the first fluid inlet 111 is the same as that of the first fluid outlet 112. Compared with the prior art where the size of the first fluid outlet 112 is larger than that of the first fluid inlet 111, in the present invention, by setting the size of the first fluid inlet 111 to be the same as that of the first fluid outlet 112, the flow resistance and turbulent flow phenomenon are reduced, making the fluid flow path in the body 1 smoother. Moreover, the other fluid entering the first fluid passage 11 from the mixing port 113 is located on the flow path of the fluid in the first fluid passage 11, which is more conducive to the mixing and rectification of various fluids, making the outlet air temperature more uniform and avoiding the disorder of various fluids at the fluid outlet end 1a, thus affecting the user experience.

[0056] In some optional embodiments, the cross-sectional area of the first fluid passage 11 remains constant along the fluid flow direction. Correspondingly, the inner cylinder 12 is a straight cylinder with the same diameter at the front and back, and the cross-sectional areas of the first cold fluid passage 11a and the mixed fluid passage 11b are the same. This enables the fluid on the first fluid passage 11 not to be subject to additional resistance, thereby making the fluid flow on the first fluid passage 11 smoother. Of course, this is not the only limitation.

[0057] The fluid generating device 100 further includes a second fluid passage 2, a fluid driving component 3 for driving the fluid flow in the second fluid passage 2, a heating component 4 for heating the fluid flowing from the second fluid passage 2 to the mixing port 113, and a circuit board (not shown) electrically connected to the fluid driving component 3 and the heating component 4. At least a part of the extending direction of the second fluid passage 2 intersects with the first fluid passage 11, and the second fluid passage 2 communicates with the first fluid passage 11 from the mixing port 113.

[0058] In the fluid generating device 100 of the present invention, the fluid driving component 3 only needs to provide the power for driving the flow of the fluid in the second fluid passage 2. After the fluid in the second fluid passage 2 flows through the mixing port 113 to the mixed fluid passage 11b, a negative pressure will be formed on the first fluid passage 11. Under the action of the negative pressure, the outside air enters the first fluid passage 11 through the first fluid inlet 111 to form cold fluid, increasing the air output of the fluid generating device 100. And less fluid is driven by the fluid driving component 3, which can reduce the volume of the fluid driving component 3, so that the structure of the fluid generating device 100 is more compact and miniaturized, and also reduces the weight, noise, etc., improving the user experience. At the same time, only the fluid in the second fluid passage 2 flows through the heating component 4. The second fluid passage 2 is also the hot fluid passage. The fluid flowing from the mixing port 113 to the mixed fluid passage 11b in the second fluid passage 2 is hot fluid. This hot fluid is mixed with the cold fluid in the first cold fluid passage 11a through the mixed fluid passage 11b and then leaves the fluid generating device 100.

[0059] The fluid generating device 100 further includes a handle 5 connected to the main body 1, and at least part of the second fluid passage 2 is formed in the handle 5.

[0060] In a specific embodiment, the fluid generating device 100 only includes one handle 5. The handle 5 is perpendicular to the main body 1, and the second fluid passage 2 is formed in the handle 5. At this time, the second fluid passage 2 is perpendicular to the first fluid passage 11. Of course, it is not limited thereto. In other embodiments, when the handle 5 includes a parallel section parallel to the main body 1, the second fluid can also be set to have a parallel section parallel to the first fluid passage 11; or, the fluid generating device 100 can also be set to include two handles 5, and the second fluid passage 2 flows through the two handles 5 in sequence and then enters the mixing port 113. In this specification, the inlet of the second fluid passage 2 is not overly restricted. As long as the inlet of the second fluid passage 2 is set to be different from the first fluid inlet 111, the specific position of the inlet of the second fluid passage 2 can be set according to requirements.

[0061] In some optional embodiments, the fluid driving component 3 is arranged on the second fluid passage 2 in the handle 5, so that the volume of the main body 1 can be further reduced.

[0062] In this embodiment, the fluid driving component 3 includes a fan and a motor for driving the fan to rotate. Of course, it is not limited thereto. In other embodiments, the fluid driving component 3 can also be set as an ion wind generating component, an air pump component, an electromagnetic driving fan component, a piezoelectric driving fan component, etc.

[0063] In the present invention, there are no excessive restrictions on the installation position of the circuit board within the fluid generating device 100. The circuit board can be installed within the handle 5 or within the body 1. The installation position of the circuit board only needs to meet the requirement that it will not be affected by the heating component 4 or the heated fluid after being heated by the heating component 4. For example, the circuit board can be installed upstream of the heating component 4 to prevent the heated fluid after being heated by the heating component 4 from flowing through the circuit board, which may cause overheating and damage to the circuit board.

[0064] The second fluid passage 2 includes a second fluid outlet 21 communicating with the body 1, and the second fluid outlet 21 refers to the connection between the handle 5 and the body 1.

[0065] In some alternative embodiments, along the axial direction of the body 1, the distance d1 from the mixing port 113 to the first fluid outlet 112 is not less than the distance d2 from the mixing port 113 to the second fluid outlet 21. Setting the mixing port 113 as close as possible to the second fluid outlet 21 facilitates the fluid in the second fluid passage 2 to flow into the mixed fluid passage 11b through the mixing port 113, and can also relatively extend the mixed fluid passage 11b, enabling the cold fluid and the hot fluid to have more sufficient contact and flow time within the mixed fluid passage, thereby improving the uniformity after mixing, reducing the temperature gradient, and avoiding local overcooling or overheating phenomena.

[0066] In a preferred embodiment, the mixing port 113 is arranged in the middle section or adjacent to the middle section of the first fluid passage 11. This facilitates the fluid in the second fluid passage 2 to flow into the mixed fluid passage 11b through the mixing port 113, and can also relatively extend the mixed fluid passage 11b, enabling the cold fluid and the hot fluid to have more sufficient contact and flow time within the mixed fluid passage, thereby improving the uniformity after mixing, reducing the temperature gradient, and avoiding local overcooling or overheating phenomena. Of course, this is not limiting.

[0067] The body 1 has a hollow cavity arranged around the first fluid passage 11. The second fluid passage 2 is connected to the hollow cavity and further connected to the mixing port 113.

[0068] Specifically, the body 1 further includes an outer cylinder 13 located on the outer periphery of the inner cylinder 12. One end of the inner cylinder 12 corresponding to the outer cylinder 13 is connected to form an end face. The hollow cavity is formed between the inner cylinder 12 and the outer cylinder 13. The handle 5 is connected to the outer cylinder 13, and the second fluid outlet 21 is formed by penetrating the outer cylinder 13.

[0069] In a specific embodiment, the inner cylinder 12 and the outer cylinder 13 are of the same length and the corresponding ends are flush with each other. Of course, this is not limiting. According to specific design requirements, at least one end of the outer cylinder 13 can also be arranged to extend axially beyond the corresponding end of the inner cylinder 12, or at least one end of the inner cylinder 12 can also be arranged to extend axially beyond the corresponding end of the outer cylinder 13.

[0070] In some alternative embodiments, a communication passage 14 is provided in the hollow cavity to communicate the mixing port 113 with the second fluid outlet 21. The fluid flowing out of the second fluid passage 2 flows through the communication passage 14 and then enters the first fluid passage 11 from the mixing port 113. This makes the fluid flowing out of the second fluid passage 2 more concentrated, preventing the fluid flowing out of the second fluid outlet 21 from filling the entire hollow cavity and affecting the inflow of the fluid from the mixing port 113 into the first fluid passage 11.

[0071] In a specific embodiment, the communication passage 14 is arranged around the first fluid passage 11, that is, the communication passage 14 is arranged around the mixing port 113.

[0072] At the same time, in the fluid generating device of the present invention, due to the overall flow channel arrangement, the outer wall of the body does not directly contact the heated fluid, especially the outer wall of the body adjacent to the fluid outlet end 1a does not directly contact the heated fluid. On the one hand, this enables the user to hold the body without feeling overheated, and even without any anti-scald design near the outer wall of the body, the possibility of scalding or overheating will be greatly reduced; on the other hand, it prevents the fluid outlet end 1a from overheating. Even if other accessories are provided at the fluid outlet end 1a, it will not cause other accessories to overheat, greatly reducing the possibility of scalding or overheating and improving the safety performance.

[0073] Specifically, two connecting walls 141 are provided in the hollow cavity at intervals along the axis. The two connecting walls 141 are respectively located on opposite sides of the mixing port 113 and the second fluid outlet 21. The two connecting walls 141, the inner cylinder 12 located between the two connecting walls 141, and the outer cylinder 13 together enclose the communication passage 14.

[0074] In some alternative embodiments, one connecting wall 141 is integrally formed with the inner cylinder 12 upstream of the mixing port 113, and the other connecting wall 141 is integrally formed with the inner cylinder 12 downstream of the mixing port 113. Thus, the corresponding section of the inner cylinder 12 can be supported in the hollow cavity at least through the corresponding connecting wall 141, that is, supported on the inner wall surface of the outer cylinder 13.

[0075] The above-mentioned corresponding section of the inner cylinder 12 can be supported in the hollow cavity at least through the corresponding connecting wall 141, that is: each section of the first fluid passage 11 is supported in the hollow cavity at least through the connecting wall 141. That is, the first cold fluid passage 11a is supported in the hollow cavity through the corresponding connecting wall 141, and the mixed fluid passage 11b is supported in the hollow cavity through the corresponding connecting wall 141.

[0076] It can be known that in addition to being supported and connected by the connecting wall 141, the inner cylinder 12 can also be fixedly connected through the docking structure with the outer cylinder 13.

[0077] The second fluid outlet 21 is axially misaligned with the mixing port 113 in the main body 1, and the second fluid outlet 21 is located on the side of the mixing port 113 away from the first fluid outlet 112.

[0078] In some optional embodiments, the fluid generating device 100 further includes a fluid guiding structure disposed near the mixing port 113 to guide the fluid in the second fluid passage 2 to flow toward the first fluid outlet 112. On the one hand, the hot fluid entering the first fluid passage 11 from the mixing port 113 can flow uniformly into the mixed fluid passage 11b, preventing some fluid from flowing backward into the first cold fluid passage 11a and affecting the stability of the use of the fluid generating device 100. On the other hand, the flow direction of the hot fluid entering the first fluid passage 11 from the mixing port 113 has a component vector in the same direction as the flow direction of the fluid in the first fluid passage 11, enabling the fluid to enter the mixed fluid passage 11b more smoothly and mix efficiently. Since the fluid has been guided and stabilized before entering the first fluid passage 11, the violent collision or turbulent flow phenomenon that occurs after suddenly entering the first fluid passage 11 is avoided, which can significantly reduce the flow noise.

[0079] Combined Figure 3 As shown, in an optional embodiment of the fluid guiding structure, the communication passage 14 extends obliquely from the second fluid outlet 21 toward the direction where the first fluid outlet 112 is located to form a guiding passage. The guiding passage constitutes the fluid guiding structure. That is, in this embodiment, the communication passage 14 serves both as the communication passage 14 connecting the mixing port 113 and the second fluid outlet 21 and as the guiding passage for guiding the fluid in the second fluid passage 2 to flow through the mixing port 113 toward the mixed fluid passage 11b, which can simplify the internal structure of the main body 1.

[0080] It can be known that in the embodiment where the communication passage 14 also serves as the guiding passage, before the fluid flowing from the second fluid outlet 21 of the second fluid passage 2 into the main body enters the mixing port, its flow direction intersects with the flow direction of the fluid in the first fluid passage 11 / in the first fluid passage 11, without a parallel stage. That is, before the hot fluid in the second fluid passage 2 enters the mixing port, the flow direction of the hot fluid intersects with the flow direction of the fluid in the first fluid passage 11 / in the first fluid passage 11, without a parallel stage, shortening the flow path of the fluid in the second fluid passage 2 between the second fluid outlet 21 and the mixing port 113, and also being able to relatively extend the mixed fluid passage, enabling the cold fluid and the hot fluid to have more sufficient contact and flow time in the mixed fluid passage, thereby improving the uniformity after mixing, reducing the temperature gradient, and avoiding local overcooling or overheating phenomena. At the same time, with such a setting, the outer wall of the main body near at least the handle does not directly contact the heated fluid, greatly reducing the possibility of scalding or overheating even without any anti-scald design near the outer wall of the main body.

[0081] As shown in combination with Figure 3 In an alternative embodiment of the fluid guiding structure, at least a portion of the heating assembly 4 is located within the hollow cavity. In an embodiment where a communication passage 14 is provided within the hollow cavity, that is, at least a portion of the heating assembly 4 is located within the communication passage 14; the position of the heating assembly 4 is arranged to make it safer for the user. For example, it is difficult for fingers, hair, or other sharp objects to enter the first fluid passage 11, thus avoiding safety accidents. At least a portion of the heating assembly 4 located within the hollow cavity / communication passage 14 extends obliquely towards the direction of the first fluid outlet 112. The heating assembly extending obliquely towards the direction of the first fluid outlet 112 at least partially forms a fluid guiding structure. The heating assembly extending obliquely towards the direction of the first fluid outlet 112 can define the flow direction of the fluid located within the hollow cavity / communication passage 14. When the fluid within the second communication passage 14 flows through the heating assembly 4 extending obliquely towards the direction of the first fluid outlet 112, while heating the fluid to form a hot fluid, it also realizes the steering of the fluid guide, enabling the hot fluid entering the first fluid passage 11 from the mixing port 113 to flow uniformly into the mixed fluid passage 11b, and avoiding some of the fluid from flowing back into the first cold fluid passage 11a, which affects the stability of the use of the fluid generating device 100.

[0082] In a specific embodiment, the heating assembly 4 disposed near the second fluid outlet 21 has a heating section extending obliquely towards the direction of the first fluid outlet 112. Thus, the fluid flowing out of the second fluid passage 2 all has a tendency to flow towards the mixed fluid passage 11b, effectively optimizing the fluid flow direction, enabling the fluid to enter the mixing channel more smoothly and mix efficiently. Since the fluid has been guided and stabilized before entering the first fluid passage 11, it avoids the violent collision or turbulent flow phenomenon that occurs after suddenly entering the first fluid passage 11, which can significantly reduce the flow noise.

[0083] For an embodiment where the mixing port 113 is annular, it is defined that: along the flow direction of the fluid within the first fluid passage 11, the mixing port 113 has a first end located upstream and a second end located downstream. The first end refers to the first cold fluid outlet 114 of the first cold fluid passage 11a, and the second end refers to the mixed fluid inlet 115 of the mixed fluid passage 11b.

[0084] As shown in combination with Figure 3As shown, in an alternative embodiment of the fluid guiding structure, the fluid guiding structure includes a guiding inclined surface 15a that extends obliquely from the first end towards the inside of the first fluid passage 11 and towards the first fluid outlet 112, that is, the guiding inclined surface 15a extends obliquely from the first cold fluid outlet 114 towards the inside of the mixed fluid passage 11b. After the fluid in the second fluid passage 2 flows through the mixing port 113, the guiding inclined surface 15a guides the fluid to flow towards the mixed fluid passage 11b.

[0085] Combined Figure 3 As shown, in an alternative embodiment of the fluid guiding structure, the fluid guiding structure includes a guiding inclined surface 15b that extends obliquely from the second end towards the outside of the first fluid passage 11 and towards the direction away from the first fluid outlet 112, that is, the guiding inclined surface 15b extends obliquely from the mixed fluid inlet 115 towards the outside of the first cold fluid passage 11a. Before the fluid in the second fluid passage 2 flows through the mixing port 113, the fluid is first guided by the guiding inclined surface 15b, so that the fluid after passing through the mixing port 113 flows towards the mixed fluid passage 11b. It can be known that the guiding inclined surface 15b in this embodiment can be regarded as a part of the guiding passage.

[0086] In some alternative embodiments, at least part of the heating component 4 is disposed on the side of the hollow cavity opposite to the second fluid passage 2, that is, at least part of the heating component 4 and the second fluid outlet 21 are located on opposite sides in the radial direction of the first fluid passage 11. The fluid flowing from the second fluid outlet 21 into the hollow cavity will flow around the first fluid passage 11 towards the side opposite to the second fluid outlet 21 under the driving force of the fluid driving component 3. Thus, by disposing the heating component 4 on the side of the hollow cavity opposite to the second fluid passage 2, since the heating component 4 is located on the side opposite to the second fluid outlet 21, the fluid will flow around the first fluid passage 11 under the driving of the fluid driving component 3, forming a circulating flow. This flow mode enables the fluid to uniformly pass through the heating component 4, avoiding local overheating or uneven heating, and thus realizing uniform heating of the fluid in the entire hollow cavity. Further, since the fluid continuously contacts the heating component 4 during the flow process, the heat transfer efficiency is improved, thereby improving the thermal efficiency of the entire system.

[0087] In the embodiment where the communicating passage 14 is included in the hollow cavity, the above-mentioned at least part of the heating component 4 being disposed on the side of the hollow cavity opposite to the second fluid passage 2 means that at least part of the heating component 4 is disposed on the side of the communicating passage 14 opposite to the second fluid passage 2.

[0088] In some alternative embodiments, a plurality of heating components 4 are spaced around the first fluid passage 11 in a hollow cavity. In embodiments where the hollow cavity includes a communication passage 14, that is, a plurality of heating components 4 are spaced around the first fluid passage 11 within the communication passage 14. It can further evenly the temperature of the fluid within the communication passage 14. The uniform heating and optimized flow path make the system more stable during operation, reducing the risk of system failures caused by temperature fluctuations or uneven flow, and improving the reliability and stability of the system.

[0089] Combined with Figure 3 As shown, in this embodiment, the heating component 4 includes a first heating component 41 provided at the second fluid outlet 21 and a second heating component 42 provided on the side of the communication passage 14 opposite to the second fluid passage 2. Of course, this is not limiting. In other embodiments, such as Figure 4 As shown in a specific embodiment, the heating component 4 may also include three or four or more heating components 4 evenly distributed around the first fluid passage 11 within the communication passage 14. At this time, one heating component 4 may be provided at the second fluid outlet 21, and the fluid flowing out of the second fluid outlet 21 is heated to form a hot fluid, so that the fluid flowing into the mixed fluid passage 11b through the mixing port 113 is all hot fluid. Of course, the plurality of heating components may also be staggered from the second fluid outlet 21; or, no heating component 4 is provided in the hollow cavity, and the heating component 4 is only provided on the second fluid passage 2 within the handle 5.

[0090] In some alternative embodiments, at least part of the heating component 4 is located at a position in the hollow cavity close to the second fluid outlet 21. At this time, the heating component 4 may be only provided in the hollow cavity, or may be provided in the handle 5 with part of the heating section protruding into the hollow cavity.

[0091] For a cross-section perpendicular to the flow direction of the fluid flowing through the heating component 4, the heating section located in the hollow cavity has at least two heating sections with different cross-sectional areas. That is, the heating component located at the second fluid outlet 21 and within the hollow cavity has different heating areas along the flow direction of the fluid. Thus, the shape of the heating component can be adjusted according to specific requirements to achieve different heating effects.

[0092] Combined with Figure 4As shown, in a specific embodiment, the cross-sectional area of the heating section of the heating assembly 4 located at the second fluid outlet 21 and within the hollow cavity is larger than the upstream cross-sectional area. This heating section is a conical heating section or a flared heating section. Thus, along the flow direction of the fluid, the heating area of this heating section gradually increases, so that the temperature of the fluid within the hollow cavity can be further made uniform, playing a role in uniform heating. Of course, this is not a limitation. In other embodiments, the heating section located at the second fluid outlet 21 and within the hollow cavity can also be arranged such that the cross-sectional area in the middle section of the fluid flow direction is larger than the upstream and downstream cross-sectional areas. At this time, the shape of the heating section is similar to that of a jar.

[0093] Specifically, the heating assembly 4 can be but is not limited to: a multi-layer sheet heater, a resistance wire heater, an irregularly shaped heater, etc. It can be adaptively selected according to the specific setting scenario.

[0094] In a preferred embodiment, the fluid generating device 100 further includes a heat insulation assembly 6, and the heating assembly 4 is arranged within the heat insulation assembly 6 to isolate the heat of the heating assembly 4 and prevent the position on the handle 5 / body 1 where the heating assembly 4 is provided from overheating, which may affect the user experience.

[0095] Specifically, the heat insulation assembly 6 can be directly fixed to the inner wall of the handle 5 and / or the inner wall of the outer cylinder 13, and then the heating assembly 4 is fixed to the heat insulation assembly 6. Alternatively, the heat insulation assembly 6 can also be arranged to wrap the heating assembly 4. By fixing the heat insulation assembly 6 to the handle 5 and / or within the hollow cavity, the heating assembly 4 is synchronously fixed at the corresponding position.

[0096] In some alternative embodiments, the fluid generating device 100 further includes a temperature sensor provided at the fluid outlet end 1a of the body 1. The temperature sensor is communicatively connected to the circuit board so as to be able to control the heating power of the heating assembly 4 according to the temperature sensed by the temperature sensor, etc., such that the temperature at the fluid outlet end 1a is within a preset temperature range.

[0097] In some alternative embodiments, the fluid generating device 100 further includes a flow rate sensor provided at the fluid outlet end 1a of the body 1, and the flow rate sensor is communicatively connected to the circuit board. Thus, the flow rate at the fluid outlet end 1a can be obtained in real time, and the operating power / rotation speed of the fluid driving assembly 3 can be controlled according to the flow rate. Of course, this is not a limitation. In other embodiments, the flow rate sensor can also be provided only at the second fluid outlet 21.

[0098] In some alternative embodiments, the fluid generating device 100 further includes an identification sensor disposed at the fluid outlet end 1a of the main body 1. The identification sensor is used to identify whether there is an accessory at the fluid outlet end 1a and can even identify the type of the accessory. The identification sensor is communicatively connected to the circuit board. Thus, the working mode of the fluid generating device 100 can be automatically controlled according to the type of the accessory.

[0099] The above-mentioned accessories include but are not limited to: air concentrator nozzle, diffuser nozzle, styling nozzle, negative ion generator, essential oil diffuser, etc.

[0100] In some alternative embodiments, the fluid generating device 100 further includes a TOF sensor disposed at the fluid outlet end 1a of the main body 1. The TOF sensor is communicatively connected to the circuit board. Thus, during the user's use, the flow rate and temperature of the fluid generating device 100 can be automatically adjusted according to the distance between the fluid outlet end 1a and the user's hair, preventing overheating from damaging the hair, saving energy, and enhancing the user experience.

[0101] In some alternative embodiments, the fluid generating device 100 further includes an NFC module disposed on the main body 1 and / or the handle 5. Thus, through the NFC module, the user can quickly pair the mobile phone with the hair dryer for personalized settings such as wind speed and temperature, and the operation is simple.

[0102] In some alternative embodiments, the fluid generating device 100 further includes a purification module disposed inside the main body 1 and / or the handle 5, which can filter dust and pollutants in the air, ensure that the blown fluid is cleaner, and thus reduce the damage of pollutants to the hair, being suitable for sensitive scalps.

[0103] In some alternative embodiments, the fluid generating device 100 further includes a thermal imaging module, and the thermal imaging module is communicatively connected to the circuit board. Through thermal imaging technology, the temperature of the hair and scalp can be monitored in real time to prevent overheating damage and protect the hair health.

[0104] In some alternative embodiments, the fluid generating device 100 further includes a scalp health detection module, and the scalp health detection module is electrically connected to the circuit board. At the same time, the scalp health detection module can also be set to be communicatively connected to a client (such as a mobile phone, a pad). Through the scalp health detection module, the scalp condition such as humidity and temperature can be detected, hair care suggestions can be provided, and sent to the client for the user to refer to.

[0105] In some alternative embodiments, the fluid generating device 100 further includes an indicator light module disposed on the main body 1 and / or the handle 5, and the indicator light module is communicatively connected to the circuit board. Different colors are emitted through the indicator light module to indicate the working mode of the fluid generating device 100 such as temperature and wind speed, and at the same time, the aesthetic effect of the fluid generating device 100 can also be increased.

[0106] In some optional embodiments, the fluid generating device 100 further includes a nozzle disposed at the fluid outlet end 1a of the main body 1. The nozzle can be set as a hidden nozzle to achieve a certain fluid guiding effect; the nozzle can also be set as a telescopic nozzle, so as to realize the adjustment of the fluid flow direction, flow rate, etc. The user can select the telescopic length, telescopic direction, etc. of the telescopic nozzle according to specific needs.

[0107] Combined Figures 5 to 6 As shown, it is the fluid generating device 100a in the second embodiment of the present invention. The difference between the fluid generating device 100a in this second embodiment and the fluid generating device 100 in the first embodiment is that: the main body 1 has a third fluid outlet 16 on the same side as the first fluid outlet 112, and the third fluid outlet 16 surrounds the first fluid outlet 112; part of the fluid in the second fluid passage 2 flows into the first fluid passage 11 from the mixing port 113, and the other part flows out from the third fluid outlet 16. That is, part of the fluid in the second fluid passage 2 is mixed with the cold fluid in the first fluid passage 11 through the mixing port 113 and then ejected from the first fluid outlet 112, and the other part is ejected directly from the third fluid outlet 16 without mixing. It can increase the air outlet area of the fluid outlet end 1a of the main body 1, and further increase the air output.

[0108] Specifically, the third fluid outlet 16 is communicated with the hollow cavity. After the fluid in the second fluid passage 2 enters the hollow cavity, part of it flows into the first fluid passage 11 from the mixing port 113, and the other part flows out from the third fluid outlet 16.

[0109] In some optional embodiments, the heating component 4 is only located on the fluid path of the fluid flowing into the first fluid passage 11 from the mixing port 113. That is, only the fluid flowing into the first fluid passage 11 from the mixing port 113 in the second fluid passage 2 is the hot fluid, and this hot fluid is mixed and temperature-adjusted with the cold fluid in the first cold fluid passage 11a; while the fluid ejected from the third fluid outlet 16 in the second fluid passage 2 is the cold fluid.

[0110] In a specific embodiment, a partition plate 7 is provided in the hollow cavity. The partition plate 7 divides the hollow cavity into a hot fluid passage communicating the second fluid passage 2 with the mixing port 113 and a cold fluid passage communicating the second fluid passage 2 with the third fluid outlet 16. Thus, among the fluids in the second fluid passage 2, only the fluid flowing into the first fluid passage 11 from the mixing port 113 is the hot fluid, and the other branched fluids are cold fluids.

[0111] In the embodiment where the heating component 4 is at least partially disposed in the handle 5, the partition plate 7 at least extends to the heating component 4 so that only the fluid in the hot fluid passage is the hot fluid.

[0112] In some optional embodiments, the fluid generating device 100 further includes an opening and closing device for controlling the opening and closing of the third fluid outlet 16, and the opening and closing device can be set to be manual or electric.

[0113] In a specific embodiment, the opening and closing device can be a rotating door rotatably disposed in the hollow cavity, and the opening and closing of the third fluid outlet 16 is controlled by controlling the rotation angle; alternatively, the opening and closing device can also be set as a folding air door, so that the opening and closing of the third fluid outlet 16 can be controlled by the number of deployed air doors.

[0114] The opening and closing of the above-mentioned third fluid outlet 16 includes but is not limited to the following states: fully open, fully closed, partially open and partially closed.

[0115] In the embodiment where the fluid generating device 100 further includes an opening and closing device for controlling the opening and closing of the third fluid outlet 16, the partition plate 7 can also be set as an electrically controlled partition plate 7, such as a telescopic partition plate. Thus, the partition plate 7 can be selectively used. For example, when the third fluid outlet 16 is in a fully open or partially open state, the partition plate 7 is controlled to be in a fully extended state, and the hollow cavity is partitioned to form a hot fluid passage connecting the second fluid passage 2 and the mixing port 113, and a cold fluid passage connecting the second fluid passage 2 and the third fluid outlet 16; when the third fluid outlet 16 is fully closed, the partition plate 7 is controlled to be in a retracted state, and the hollow cavity is not partitioned.

[0116] In some optional embodiments, the fluid generating device 100 further includes a secondary air mixing mechanism disposed near the fluid outlet end 1a of the main body 1.

[0117] In some optional embodiments, the secondary air mixing mechanism is integrally provided with the main body 1, and the secondary air mixing mechanism is located at the first fluid outlet 112 and the third fluid outlet 16. At this time, the fluid outlet end 1a of the main body 1 refers to the outlet end of the secondary air mixing mechanism. In other optional embodiments, the secondary air mixing mechanism can also be a mixing air attachment detachably connected to the fluid outlet end 1a of the main body 1.

[0118] Except for the above differences, the above-mentioned second embodiment and the first embodiment of the present invention are the same in other aspects, and thus will not be elaborated here.

[0119] Compared with the prior art, in the fluid generating devices 100 and 100a of the present invention, by providing a mixing port 113 communicating with the second fluid passage 2 between the first fluid inlet 111 and the first fluid outlet 112 of the first fluid passage 11, and coaxial setting the first fluid inlet 111 and the first fluid outlet 112, and the size of the first fluid inlet 111 is the same as that of the first fluid outlet 112; the flow resistance and the turbulent flow phenomenon are reduced, so that the fluid flow in the body 1 is smoother, and the other fluid entering the first fluid passage 11 from the mixing port 113 is located on the flow path of the fluid in the first fluid passage 11, which is more conducive to the mixing and rectification between various fluids, making the outlet air temperature more uniform, and avoiding the disorder of various fluids at the fluid outlet end 1a and affecting the user experience.

[0120] It should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0121] The series of detailed descriptions listed above are only specific descriptions of the feasible embodiments of the present invention, and they are not intended to limit the protection scope of the present invention. Any equivalent embodiments or changes made without departing from the technical spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A fluid generating device, characterized in that: include: A body, wherein a first fluid passage extending along the axial direction thereof is provided in the body, wherein the first fluid passage has a first fluid inlet and a first fluid outlet, wherein the first fluid inlet and the first fluid outlet are coaxially arranged, and the size of the first fluid inlet is the same as the size of the first fluid outlet; a mixing port located between the first fluid inlet and the first fluid outlet; a second fluid passage, wherein at least a portion of the second fluid passage extends in a direction intersecting with the first fluid passage, and the second fluid passage is connected to the first fluid passage from the mixing port; a fluid driving component, used for driving the fluid flow in the second fluid passage; A heating component is used to heat the fluid flowing from the second fluid passage to the mixing port.

2. The fluid generating device according to claim 1, characterized in that: The cross-sectional area of ​​the first fluid passage remains constant along the fluid flow direction.

3. The fluid generating device according to claim 1, characterized in that: The second fluid passage includes a second fluid outlet communicated with the body; the distance between the mixing port and the first fluid outlet is not less than the distance between the mixing port and the second fluid outlet.

4. The fluid generating device according to claim 1, characterized in that: The mixing port is disposed in the middle section or near the middle section of the first fluid passage.

5. The fluid generating device according to claim 1, characterized in that: The fluid generating device further comprises a fluid guiding structure, and the fluid guiding structure is arranged at a position close to the mixing port to guide the fluid in the second fluid passage to flow toward the first fluid outlet.

6. The fluid generating device according to claim 5, characterized in that: The body has a hollow cavity surrounding the first fluid passage, and the second fluid passage includes a second fluid outlet; the fluid guiding structure includes a guiding passage located in the hollow cavity and extending obliquely from the second fluid outlet toward the direction of the first fluid outlet.

7. The fluid generating device according to claim 6, characterized in that: The guide passage is disposed around the first fluid passage.

8. The fluid generating device according to claim 5, characterized in that: The body has a hollow cavity disposed around the first fluid passage, and the second fluid passage includes a second fluid outlet communicating with the hollow cavity; The heating component is at least partially located in the hollow cavity, and at least part of the heating component located in the hollow cavity extends obliquely toward the direction of the first fluid outlet. The heating component extending obliquely toward the direction of the first fluid outlet at least partially forms the fluid guiding structure.

9. The fluid generating device according to claim 5, characterized in that: The mixing port is annular, and has a first end located upstream and a second end located downstream along the flow direction of the fluid in the first fluid passage; The fluid guiding structure includes a guiding slope extending obliquely from the first end toward the first fluid passage and toward the first fluid outlet; and / or, the fluid guiding structure includes a guiding slope extending obliquely from the second end toward the outside of the first fluid passage and toward a direction away from the first fluid outlet.

10. The fluid generating device according to claim 1, characterized in that: The fluid generating device is provided with a handle connected to the body, and at least a part of the second fluid passage is formed in the handle.

11. The fluid generating device according to claim 1, characterized in that: The body has a hollow cavity arranged around the first fluid passage, and the second fluid passage is connected to the hollow cavity; At least part of the heating components are arranged on a side of the hollow cavity opposite to the second fluid passage; or, a plurality of the heating components are arranged in the hollow cavity at intervals around the first fluid passage.

12. The fluid generating device according to claim 1, characterized in that: The body has a hollow cavity disposed around the first fluid passage, and the second fluid passage includes a second fluid outlet communicating with the hollow cavity; At least a portion of the heating assembly is located in the hollow cavity near the second fluid outlet.

13. The fluid generating device according to claim 12, characterized in that: With respect to a cross section perpendicular to a flow direction of the fluid flowing through the heating component, the heating component located in the hollow cavity has at least two heating sections with different cross-sectional areas.

14. The fluid generating device according to claim 13, characterized in that: The downstream cross-sectional area of ​​the heating assembly located in the hollow cavity is larger than the upstream cross-sectional area.

15. The fluid generating device according to claim 1, characterized in that: The fluid generating device further comprises a handle connected to the body, wherein the second fluid passage is formed in the handle; and the heating component is only located in the handle / second fluid passage.

16. The fluid generating device according to claim 1, characterized in that: The body has a hollow cavity arranged around the first fluid passage, and two connecting walls arranged in an axial direction are arranged in the hollow cavity, and the two connecting walls form a connecting passage connecting the mixing port with the second fluid passage; The first fluid passage is divided into sections at the mixing port, and each section of the first fluid passage is supported in the hollow cavity at least by the connecting wall.

17. The fluid generating device according to claim 1, characterized in that: The body has a third fluid outlet located on the same side as the first fluid outlet, and the third fluid outlet surrounds the first fluid outlet; part of the fluid in the second fluid passage flows into the first fluid passage from the mixing port, and the other part flows out from the third fluid outlet.

18. The fluid generating device according to claim 17, characterized in that: The heating element is located only on the fluid path of the fluid flowing from the mixing port into the first fluid passage.

19. The fluid generating device according to claim 17, characterized in that: The body has a hollow cavity arranged around the first fluid passage, and the third fluid outlet is connected to the hollow cavity; A partition plate is disposed in the hollow cavity, and the partition plate divides the hollow cavity into a hot fluid passage connecting the second fluid passage and the mixing port, and a cold fluid passage connecting the second fluid passage and the third fluid outlet.

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